| /* |
| * thinkpad_acpi.c - ThinkPad ACPI Extras |
| * |
| * |
| * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> |
| * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| * 02110-1301, USA. |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #define TPACPI_VERSION "0.25" |
| #define TPACPI_SYSFS_VERSION 0x020700 |
| |
| /* |
| * Changelog: |
| * 2007-10-20 changelog trimmed down |
| * |
| * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to |
| * drivers/misc. |
| * |
| * 2006-11-22 0.13 new maintainer |
| * changelog now lives in git commit history, and will |
| * not be updated further in-file. |
| * |
| * 2005-03-17 0.11 support for 600e, 770x |
| * thanks to Jamie Lentin <lentinj@dial.pipex.com> |
| * |
| * 2005-01-16 0.9 use MODULE_VERSION |
| * thanks to Henrik Brix Andersen <brix@gentoo.org> |
| * fix parameter passing on module loading |
| * thanks to Rusty Russell <rusty@rustcorp.com.au> |
| * thanks to Jim Radford <radford@blackbean.org> |
| * 2004-11-08 0.8 fix init error case, don't return from a macro |
| * thanks to Chris Wright <chrisw@osdl.org> |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/types.h> |
| #include <linux/string.h> |
| #include <linux/list.h> |
| #include <linux/mutex.h> |
| #include <linux/sched.h> |
| #include <linux/kthread.h> |
| #include <linux/freezer.h> |
| #include <linux/delay.h> |
| #include <linux/slab.h> |
| #include <linux/nvram.h> |
| #include <linux/proc_fs.h> |
| #include <linux/seq_file.h> |
| #include <linux/sysfs.h> |
| #include <linux/backlight.h> |
| #include <linux/fb.h> |
| #include <linux/platform_device.h> |
| #include <linux/hwmon.h> |
| #include <linux/hwmon-sysfs.h> |
| #include <linux/input.h> |
| #include <linux/leds.h> |
| #include <linux/rfkill.h> |
| #include <linux/dmi.h> |
| #include <linux/jiffies.h> |
| #include <linux/workqueue.h> |
| #include <linux/acpi.h> |
| #include <linux/pci_ids.h> |
| #include <linux/thinkpad_acpi.h> |
| #include <sound/core.h> |
| #include <sound/control.h> |
| #include <sound/initval.h> |
| #include <asm/uaccess.h> |
| #include <acpi/video.h> |
| |
| /* ThinkPad CMOS commands */ |
| #define TP_CMOS_VOLUME_DOWN 0 |
| #define TP_CMOS_VOLUME_UP 1 |
| #define TP_CMOS_VOLUME_MUTE 2 |
| #define TP_CMOS_BRIGHTNESS_UP 4 |
| #define TP_CMOS_BRIGHTNESS_DOWN 5 |
| #define TP_CMOS_THINKLIGHT_ON 12 |
| #define TP_CMOS_THINKLIGHT_OFF 13 |
| |
| /* NVRAM Addresses */ |
| enum tp_nvram_addr { |
| TP_NVRAM_ADDR_HK2 = 0x57, |
| TP_NVRAM_ADDR_THINKLIGHT = 0x58, |
| TP_NVRAM_ADDR_VIDEO = 0x59, |
| TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, |
| TP_NVRAM_ADDR_MIXER = 0x60, |
| }; |
| |
| /* NVRAM bit masks */ |
| enum { |
| TP_NVRAM_MASK_HKT_THINKPAD = 0x08, |
| TP_NVRAM_MASK_HKT_ZOOM = 0x20, |
| TP_NVRAM_MASK_HKT_DISPLAY = 0x40, |
| TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, |
| TP_NVRAM_MASK_THINKLIGHT = 0x10, |
| TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, |
| TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, |
| TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, |
| TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, |
| TP_NVRAM_MASK_MUTE = 0x40, |
| TP_NVRAM_MASK_HKT_VOLUME = 0x80, |
| TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, |
| TP_NVRAM_POS_LEVEL_VOLUME = 0, |
| }; |
| |
| /* Misc NVRAM-related */ |
| enum { |
| TP_NVRAM_LEVEL_VOLUME_MAX = 14, |
| }; |
| |
| /* ACPI HIDs */ |
| #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" |
| #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" |
| #define TPACPI_ACPI_EC_HID "PNP0C09" |
| |
| /* Input IDs */ |
| #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ |
| #define TPACPI_HKEY_INPUT_VERSION 0x4101 |
| |
| /* ACPI \WGSV commands */ |
| enum { |
| TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ |
| TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ |
| TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ |
| TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ |
| }; |
| |
| /* TP_ACPI_WGSV_GET_STATE bits */ |
| enum { |
| TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ |
| TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ |
| TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ |
| TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ |
| TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ |
| TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ |
| TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ |
| TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ |
| TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ |
| TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ |
| }; |
| |
| /* HKEY events */ |
| enum tpacpi_hkey_event_t { |
| /* Hotkey-related */ |
| TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ |
| TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ |
| TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ |
| TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ |
| TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ |
| TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ |
| |
| /* Reasons for waking up from S3/S4 */ |
| TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ |
| TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ |
| TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ |
| TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ |
| TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ |
| TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ |
| |
| /* Auto-sleep after eject request */ |
| TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ |
| TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ |
| |
| /* Misc bay events */ |
| TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ |
| TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock |
| or port replicator */ |
| TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug |
| dock or port replicator */ |
| |
| /* User-interface events */ |
| TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ |
| TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ |
| TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ |
| TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ |
| TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ |
| TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ |
| TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ |
| |
| /* Key-related user-interface events */ |
| TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ |
| TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ |
| TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ |
| |
| /* Thermal events */ |
| TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ |
| TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ |
| TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ |
| TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ |
| TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */ |
| |
| /* AC-related events */ |
| TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ |
| |
| /* Misc */ |
| TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ |
| }; |
| |
| /**************************************************************************** |
| * Main driver |
| */ |
| |
| #define TPACPI_NAME "thinkpad" |
| #define TPACPI_DESC "ThinkPad ACPI Extras" |
| #define TPACPI_FILE TPACPI_NAME "_acpi" |
| #define TPACPI_URL "http://ibm-acpi.sf.net/" |
| #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" |
| |
| #define TPACPI_PROC_DIR "ibm" |
| #define TPACPI_ACPI_EVENT_PREFIX "ibm" |
| #define TPACPI_DRVR_NAME TPACPI_FILE |
| #define TPACPI_DRVR_SHORTNAME "tpacpi" |
| #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" |
| |
| #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" |
| #define TPACPI_WORKQUEUE_NAME "ktpacpid" |
| |
| #define TPACPI_MAX_ACPI_ARGS 3 |
| |
| /* Debugging printk groups */ |
| #define TPACPI_DBG_ALL 0xffff |
| #define TPACPI_DBG_DISCLOSETASK 0x8000 |
| #define TPACPI_DBG_INIT 0x0001 |
| #define TPACPI_DBG_EXIT 0x0002 |
| #define TPACPI_DBG_RFKILL 0x0004 |
| #define TPACPI_DBG_HKEY 0x0008 |
| #define TPACPI_DBG_FAN 0x0010 |
| #define TPACPI_DBG_BRGHT 0x0020 |
| #define TPACPI_DBG_MIXER 0x0040 |
| |
| #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") |
| #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") |
| #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) |
| |
| |
| /**************************************************************************** |
| * Driver-wide structs and misc. variables |
| */ |
| |
| struct ibm_struct; |
| |
| struct tp_acpi_drv_struct { |
| const struct acpi_device_id *hid; |
| struct acpi_driver *driver; |
| |
| void (*notify) (struct ibm_struct *, u32); |
| acpi_handle *handle; |
| u32 type; |
| struct acpi_device *device; |
| }; |
| |
| struct ibm_struct { |
| char *name; |
| |
| int (*read) (struct seq_file *); |
| int (*write) (char *); |
| void (*exit) (void); |
| void (*resume) (void); |
| void (*suspend) (void); |
| void (*shutdown) (void); |
| |
| struct list_head all_drivers; |
| |
| struct tp_acpi_drv_struct *acpi; |
| |
| struct { |
| u8 acpi_driver_registered:1; |
| u8 acpi_notify_installed:1; |
| u8 proc_created:1; |
| u8 init_called:1; |
| u8 experimental:1; |
| } flags; |
| }; |
| |
| struct ibm_init_struct { |
| char param[32]; |
| |
| int (*init) (struct ibm_init_struct *); |
| umode_t base_procfs_mode; |
| struct ibm_struct *data; |
| }; |
| |
| static struct { |
| u32 bluetooth:1; |
| u32 hotkey:1; |
| u32 hotkey_mask:1; |
| u32 hotkey_wlsw:1; |
| u32 hotkey_tablet:1; |
| u32 kbdlight:1; |
| u32 light:1; |
| u32 light_status:1; |
| u32 bright_acpimode:1; |
| u32 bright_unkfw:1; |
| u32 wan:1; |
| u32 uwb:1; |
| u32 fan_ctrl_status_undef:1; |
| u32 second_fan:1; |
| u32 beep_needs_two_args:1; |
| u32 mixer_no_level_control:1; |
| u32 input_device_registered:1; |
| u32 platform_drv_registered:1; |
| u32 platform_drv_attrs_registered:1; |
| u32 sensors_pdrv_registered:1; |
| u32 sensors_pdrv_attrs_registered:1; |
| u32 sensors_pdev_attrs_registered:1; |
| u32 hotkey_poll_active:1; |
| u32 has_adaptive_kbd:1; |
| } tp_features; |
| |
| static struct { |
| u16 hotkey_mask_ff:1; |
| u16 volume_ctrl_forbidden:1; |
| } tp_warned; |
| |
| struct thinkpad_id_data { |
| unsigned int vendor; /* ThinkPad vendor: |
| * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ |
| |
| char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ |
| char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ |
| |
| u16 bios_model; /* 1Y = 0x5931, 0 = unknown */ |
| u16 ec_model; |
| u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */ |
| u16 ec_release; |
| |
| char *model_str; /* ThinkPad T43 */ |
| char *nummodel_str; /* 9384A9C for a 9384-A9C model */ |
| }; |
| static struct thinkpad_id_data thinkpad_id; |
| |
| static enum { |
| TPACPI_LIFE_INIT = 0, |
| TPACPI_LIFE_RUNNING, |
| TPACPI_LIFE_EXITING, |
| } tpacpi_lifecycle; |
| |
| static int experimental; |
| static u32 dbg_level; |
| |
| static struct workqueue_struct *tpacpi_wq; |
| |
| enum led_status_t { |
| TPACPI_LED_OFF = 0, |
| TPACPI_LED_ON, |
| TPACPI_LED_BLINK, |
| }; |
| |
| /* Special LED class that can defer work */ |
| struct tpacpi_led_classdev { |
| struct led_classdev led_classdev; |
| struct work_struct work; |
| enum led_status_t new_state; |
| int led; |
| }; |
| |
| /* brightness level capabilities */ |
| static unsigned int bright_maxlvl; /* 0 = unknown */ |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| static int dbg_wlswemul; |
| static bool tpacpi_wlsw_emulstate; |
| static int dbg_bluetoothemul; |
| static bool tpacpi_bluetooth_emulstate; |
| static int dbg_wwanemul; |
| static bool tpacpi_wwan_emulstate; |
| static int dbg_uwbemul; |
| static bool tpacpi_uwb_emulstate; |
| #endif |
| |
| |
| /************************************************************************* |
| * Debugging helpers |
| */ |
| |
| #define dbg_printk(a_dbg_level, format, arg...) \ |
| do { \ |
| if (dbg_level & (a_dbg_level)) \ |
| printk(KERN_DEBUG pr_fmt("%s: " format), \ |
| __func__, ##arg); \ |
| } while (0) |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUG |
| #define vdbg_printk dbg_printk |
| static const char *str_supported(int is_supported); |
| #else |
| static inline const char *str_supported(int is_supported) { return ""; } |
| #define vdbg_printk(a_dbg_level, format, arg...) \ |
| do { if (0) no_printk(format, ##arg); } while (0) |
| #endif |
| |
| static void tpacpi_log_usertask(const char * const what) |
| { |
| printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), |
| what, task_tgid_vnr(current)); |
| } |
| |
| #define tpacpi_disclose_usertask(what, format, arg...) \ |
| do { \ |
| if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ |
| (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ |
| printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ |
| what, task_tgid_vnr(current), ## arg); \ |
| } \ |
| } while (0) |
| |
| /* |
| * Quirk handling helpers |
| * |
| * ThinkPad IDs and versions seen in the field so far |
| * are two-characters from the set [0-9A-Z], i.e. base 36. |
| * |
| * We use values well outside that range as specials. |
| */ |
| |
| #define TPACPI_MATCH_ANY 0xffffU |
| #define TPACPI_MATCH_UNKNOWN 0U |
| |
| /* TPID('1', 'Y') == 0x5931 */ |
| #define TPID(__c1, __c2) (((__c2) << 8) | (__c1)) |
| |
| #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ |
| { .vendor = PCI_VENDOR_ID_IBM, \ |
| .bios = TPID(__id1, __id2), \ |
| .ec = TPACPI_MATCH_ANY, \ |
| .quirks = (__quirk) } |
| |
| #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ |
| { .vendor = PCI_VENDOR_ID_LENOVO, \ |
| .bios = TPID(__id1, __id2), \ |
| .ec = TPACPI_MATCH_ANY, \ |
| .quirks = (__quirk) } |
| |
| #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ |
| { .vendor = PCI_VENDOR_ID_LENOVO, \ |
| .bios = TPACPI_MATCH_ANY, \ |
| .ec = TPID(__id1, __id2), \ |
| .quirks = (__quirk) } |
| |
| struct tpacpi_quirk { |
| unsigned int vendor; |
| u16 bios; |
| u16 ec; |
| unsigned long quirks; |
| }; |
| |
| /** |
| * tpacpi_check_quirks() - search BIOS/EC version on a list |
| * @qlist: array of &struct tpacpi_quirk |
| * @qlist_size: number of elements in @qlist |
| * |
| * Iterates over a quirks list until one is found that matches the |
| * ThinkPad's vendor, BIOS and EC model. |
| * |
| * Returns 0 if nothing matches, otherwise returns the quirks field of |
| * the matching &struct tpacpi_quirk entry. |
| * |
| * The match criteria is: vendor, ec and bios much match. |
| */ |
| static unsigned long __init tpacpi_check_quirks( |
| const struct tpacpi_quirk *qlist, |
| unsigned int qlist_size) |
| { |
| while (qlist_size) { |
| if ((qlist->vendor == thinkpad_id.vendor || |
| qlist->vendor == TPACPI_MATCH_ANY) && |
| (qlist->bios == thinkpad_id.bios_model || |
| qlist->bios == TPACPI_MATCH_ANY) && |
| (qlist->ec == thinkpad_id.ec_model || |
| qlist->ec == TPACPI_MATCH_ANY)) |
| return qlist->quirks; |
| |
| qlist_size--; |
| qlist++; |
| } |
| return 0; |
| } |
| |
| static inline bool __pure __init tpacpi_is_lenovo(void) |
| { |
| return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; |
| } |
| |
| static inline bool __pure __init tpacpi_is_ibm(void) |
| { |
| return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; |
| } |
| |
| /**************************************************************************** |
| **************************************************************************** |
| * |
| * ACPI Helpers and device model |
| * |
| **************************************************************************** |
| ****************************************************************************/ |
| |
| /************************************************************************* |
| * ACPI basic handles |
| */ |
| |
| static acpi_handle root_handle; |
| static acpi_handle ec_handle; |
| |
| #define TPACPI_HANDLE(object, parent, paths...) \ |
| static acpi_handle object##_handle; \ |
| static const acpi_handle * const object##_parent __initconst = \ |
| &parent##_handle; \ |
| static char *object##_paths[] __initdata = { paths } |
| |
| TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ |
| TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ |
| |
| TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ |
| /* T4x, X31, X40 */ |
| "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ |
| "\\CMS", /* R40, R40e */ |
| ); /* all others */ |
| |
| TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ |
| "^HKEY", /* R30, R31 */ |
| "HKEY", /* all others */ |
| ); /* 570 */ |
| |
| /************************************************************************* |
| * ACPI helpers |
| */ |
| |
| static int acpi_evalf(acpi_handle handle, |
| int *res, char *method, char *fmt, ...) |
| { |
| char *fmt0 = fmt; |
| struct acpi_object_list params; |
| union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; |
| struct acpi_buffer result, *resultp; |
| union acpi_object out_obj; |
| acpi_status status; |
| va_list ap; |
| char res_type; |
| int success; |
| int quiet; |
| |
| if (!*fmt) { |
| pr_err("acpi_evalf() called with empty format\n"); |
| return 0; |
| } |
| |
| if (*fmt == 'q') { |
| quiet = 1; |
| fmt++; |
| } else |
| quiet = 0; |
| |
| res_type = *(fmt++); |
| |
| params.count = 0; |
| params.pointer = &in_objs[0]; |
| |
| va_start(ap, fmt); |
| while (*fmt) { |
| char c = *(fmt++); |
| switch (c) { |
| case 'd': /* int */ |
| in_objs[params.count].integer.value = va_arg(ap, int); |
| in_objs[params.count++].type = ACPI_TYPE_INTEGER; |
| break; |
| /* add more types as needed */ |
| default: |
| pr_err("acpi_evalf() called " |
| "with invalid format character '%c'\n", c); |
| va_end(ap); |
| return 0; |
| } |
| } |
| va_end(ap); |
| |
| if (res_type != 'v') { |
| result.length = sizeof(out_obj); |
| result.pointer = &out_obj; |
| resultp = &result; |
| } else |
| resultp = NULL; |
| |
| status = acpi_evaluate_object(handle, method, ¶ms, resultp); |
| |
| switch (res_type) { |
| case 'd': /* int */ |
| success = (status == AE_OK && |
| out_obj.type == ACPI_TYPE_INTEGER); |
| if (success && res) |
| *res = out_obj.integer.value; |
| break; |
| case 'v': /* void */ |
| success = status == AE_OK; |
| break; |
| /* add more types as needed */ |
| default: |
| pr_err("acpi_evalf() called " |
| "with invalid format character '%c'\n", res_type); |
| return 0; |
| } |
| |
| if (!success && !quiet) |
| pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", |
| method, fmt0, acpi_format_exception(status)); |
| |
| return success; |
| } |
| |
| static int acpi_ec_read(int i, u8 *p) |
| { |
| int v; |
| |
| if (ecrd_handle) { |
| if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) |
| return 0; |
| *p = v; |
| } else { |
| if (ec_read(i, p) < 0) |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| static int acpi_ec_write(int i, u8 v) |
| { |
| if (ecwr_handle) { |
| if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) |
| return 0; |
| } else { |
| if (ec_write(i, v) < 0) |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| static int issue_thinkpad_cmos_command(int cmos_cmd) |
| { |
| if (!cmos_handle) |
| return -ENXIO; |
| |
| if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| /************************************************************************* |
| * ACPI device model |
| */ |
| |
| #define TPACPI_ACPIHANDLE_INIT(object) \ |
| drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ |
| object##_paths, ARRAY_SIZE(object##_paths)) |
| |
| static void __init drv_acpi_handle_init(const char *name, |
| acpi_handle *handle, const acpi_handle parent, |
| char **paths, const int num_paths) |
| { |
| int i; |
| acpi_status status; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", |
| name); |
| |
| for (i = 0; i < num_paths; i++) { |
| status = acpi_get_handle(parent, paths[i], handle); |
| if (ACPI_SUCCESS(status)) { |
| dbg_printk(TPACPI_DBG_INIT, |
| "Found ACPI handle %s for %s\n", |
| paths[i], name); |
| return; |
| } |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", |
| name); |
| *handle = NULL; |
| } |
| |
| static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, |
| u32 level, void *context, void **return_value) |
| { |
| struct acpi_device *dev; |
| if (!strcmp(context, "video")) { |
| if (acpi_bus_get_device(handle, &dev)) |
| return AE_OK; |
| if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) |
| return AE_OK; |
| } |
| |
| *(acpi_handle *)return_value = handle; |
| |
| return AE_CTRL_TERMINATE; |
| } |
| |
| static void __init tpacpi_acpi_handle_locate(const char *name, |
| const char *hid, |
| acpi_handle *handle) |
| { |
| acpi_status status; |
| acpi_handle device_found; |
| |
| BUG_ON(!name || !handle); |
| vdbg_printk(TPACPI_DBG_INIT, |
| "trying to locate ACPI handle for %s, using HID %s\n", |
| name, hid ? hid : "NULL"); |
| |
| memset(&device_found, 0, sizeof(device_found)); |
| status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, |
| (void *)name, &device_found); |
| |
| *handle = NULL; |
| |
| if (ACPI_SUCCESS(status)) { |
| *handle = device_found; |
| dbg_printk(TPACPI_DBG_INIT, |
| "Found ACPI handle for %s\n", name); |
| } else { |
| vdbg_printk(TPACPI_DBG_INIT, |
| "Could not locate an ACPI handle for %s: %s\n", |
| name, acpi_format_exception(status)); |
| } |
| } |
| |
| static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) |
| { |
| struct ibm_struct *ibm = data; |
| |
| if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) |
| return; |
| |
| if (!ibm || !ibm->acpi || !ibm->acpi->notify) |
| return; |
| |
| ibm->acpi->notify(ibm, event); |
| } |
| |
| static int __init setup_acpi_notify(struct ibm_struct *ibm) |
| { |
| acpi_status status; |
| int rc; |
| |
| BUG_ON(!ibm->acpi); |
| |
| if (!*ibm->acpi->handle) |
| return 0; |
| |
| vdbg_printk(TPACPI_DBG_INIT, |
| "setting up ACPI notify for %s\n", ibm->name); |
| |
| rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); |
| if (rc < 0) { |
| pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc); |
| return -ENODEV; |
| } |
| |
| ibm->acpi->device->driver_data = ibm; |
| sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", |
| TPACPI_ACPI_EVENT_PREFIX, |
| ibm->name); |
| |
| status = acpi_install_notify_handler(*ibm->acpi->handle, |
| ibm->acpi->type, dispatch_acpi_notify, ibm); |
| if (ACPI_FAILURE(status)) { |
| if (status == AE_ALREADY_EXISTS) { |
| pr_notice("another device driver is already " |
| "handling %s events\n", ibm->name); |
| } else { |
| pr_err("acpi_install_notify_handler(%s) failed: %s\n", |
| ibm->name, acpi_format_exception(status)); |
| } |
| return -ENODEV; |
| } |
| ibm->flags.acpi_notify_installed = 1; |
| return 0; |
| } |
| |
| static int __init tpacpi_device_add(struct acpi_device *device) |
| { |
| return 0; |
| } |
| |
| static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) |
| { |
| int rc; |
| |
| dbg_printk(TPACPI_DBG_INIT, |
| "registering %s as an ACPI driver\n", ibm->name); |
| |
| BUG_ON(!ibm->acpi); |
| |
| ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); |
| if (!ibm->acpi->driver) { |
| pr_err("failed to allocate memory for ibm->acpi->driver\n"); |
| return -ENOMEM; |
| } |
| |
| sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); |
| ibm->acpi->driver->ids = ibm->acpi->hid; |
| |
| ibm->acpi->driver->ops.add = &tpacpi_device_add; |
| |
| rc = acpi_bus_register_driver(ibm->acpi->driver); |
| if (rc < 0) { |
| pr_err("acpi_bus_register_driver(%s) failed: %d\n", |
| ibm->name, rc); |
| kfree(ibm->acpi->driver); |
| ibm->acpi->driver = NULL; |
| } else if (!rc) |
| ibm->flags.acpi_driver_registered = 1; |
| |
| return rc; |
| } |
| |
| |
| /**************************************************************************** |
| **************************************************************************** |
| * |
| * Procfs Helpers |
| * |
| **************************************************************************** |
| ****************************************************************************/ |
| |
| static int dispatch_proc_show(struct seq_file *m, void *v) |
| { |
| struct ibm_struct *ibm = m->private; |
| |
| if (!ibm || !ibm->read) |
| return -EINVAL; |
| return ibm->read(m); |
| } |
| |
| static int dispatch_proc_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, dispatch_proc_show, PDE_DATA(inode)); |
| } |
| |
| static ssize_t dispatch_proc_write(struct file *file, |
| const char __user *userbuf, |
| size_t count, loff_t *pos) |
| { |
| struct ibm_struct *ibm = PDE_DATA(file_inode(file)); |
| char *kernbuf; |
| int ret; |
| |
| if (!ibm || !ibm->write) |
| return -EINVAL; |
| if (count > PAGE_SIZE - 2) |
| return -EINVAL; |
| |
| kernbuf = kmalloc(count + 2, GFP_KERNEL); |
| if (!kernbuf) |
| return -ENOMEM; |
| |
| if (copy_from_user(kernbuf, userbuf, count)) { |
| kfree(kernbuf); |
| return -EFAULT; |
| } |
| |
| kernbuf[count] = 0; |
| strcat(kernbuf, ","); |
| ret = ibm->write(kernbuf); |
| if (ret == 0) |
| ret = count; |
| |
| kfree(kernbuf); |
| |
| return ret; |
| } |
| |
| static const struct file_operations dispatch_proc_fops = { |
| .owner = THIS_MODULE, |
| .open = dispatch_proc_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| .write = dispatch_proc_write, |
| }; |
| |
| static char *next_cmd(char **cmds) |
| { |
| char *start = *cmds; |
| char *end; |
| |
| while ((end = strchr(start, ',')) && end == start) |
| start = end + 1; |
| |
| if (!end) |
| return NULL; |
| |
| *end = 0; |
| *cmds = end + 1; |
| return start; |
| } |
| |
| |
| /**************************************************************************** |
| **************************************************************************** |
| * |
| * Device model: input, hwmon and platform |
| * |
| **************************************************************************** |
| ****************************************************************************/ |
| |
| static struct platform_device *tpacpi_pdev; |
| static struct platform_device *tpacpi_sensors_pdev; |
| static struct device *tpacpi_hwmon; |
| static struct input_dev *tpacpi_inputdev; |
| static struct mutex tpacpi_inputdev_send_mutex; |
| static LIST_HEAD(tpacpi_all_drivers); |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int tpacpi_suspend_handler(struct device *dev) |
| { |
| struct ibm_struct *ibm, *itmp; |
| |
| list_for_each_entry_safe(ibm, itmp, |
| &tpacpi_all_drivers, |
| all_drivers) { |
| if (ibm->suspend) |
| (ibm->suspend)(); |
| } |
| |
| return 0; |
| } |
| |
| static int tpacpi_resume_handler(struct device *dev) |
| { |
| struct ibm_struct *ibm, *itmp; |
| |
| list_for_each_entry_safe(ibm, itmp, |
| &tpacpi_all_drivers, |
| all_drivers) { |
| if (ibm->resume) |
| (ibm->resume)(); |
| } |
| |
| return 0; |
| } |
| #endif |
| |
| static SIMPLE_DEV_PM_OPS(tpacpi_pm, |
| tpacpi_suspend_handler, tpacpi_resume_handler); |
| |
| static void tpacpi_shutdown_handler(struct platform_device *pdev) |
| { |
| struct ibm_struct *ibm, *itmp; |
| |
| list_for_each_entry_safe(ibm, itmp, |
| &tpacpi_all_drivers, |
| all_drivers) { |
| if (ibm->shutdown) |
| (ibm->shutdown)(); |
| } |
| } |
| |
| static struct platform_driver tpacpi_pdriver = { |
| .driver = { |
| .name = TPACPI_DRVR_NAME, |
| .pm = &tpacpi_pm, |
| }, |
| .shutdown = tpacpi_shutdown_handler, |
| }; |
| |
| static struct platform_driver tpacpi_hwmon_pdriver = { |
| .driver = { |
| .name = TPACPI_HWMON_DRVR_NAME, |
| }, |
| }; |
| |
| /************************************************************************* |
| * sysfs support helpers |
| */ |
| |
| struct attribute_set { |
| unsigned int members, max_members; |
| struct attribute_group group; |
| }; |
| |
| struct attribute_set_obj { |
| struct attribute_set s; |
| struct attribute *a; |
| } __attribute__((packed)); |
| |
| static struct attribute_set *create_attr_set(unsigned int max_members, |
| const char *name) |
| { |
| struct attribute_set_obj *sobj; |
| |
| if (max_members == 0) |
| return NULL; |
| |
| /* Allocates space for implicit NULL at the end too */ |
| sobj = kzalloc(sizeof(struct attribute_set_obj) + |
| max_members * sizeof(struct attribute *), |
| GFP_KERNEL); |
| if (!sobj) |
| return NULL; |
| sobj->s.max_members = max_members; |
| sobj->s.group.attrs = &sobj->a; |
| sobj->s.group.name = name; |
| |
| return &sobj->s; |
| } |
| |
| #define destroy_attr_set(_set) \ |
| kfree(_set); |
| |
| /* not multi-threaded safe, use it in a single thread per set */ |
| static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) |
| { |
| if (!s || !attr) |
| return -EINVAL; |
| |
| if (s->members >= s->max_members) |
| return -ENOMEM; |
| |
| s->group.attrs[s->members] = attr; |
| s->members++; |
| |
| return 0; |
| } |
| |
| static int add_many_to_attr_set(struct attribute_set *s, |
| struct attribute **attr, |
| unsigned int count) |
| { |
| int i, res; |
| |
| for (i = 0; i < count; i++) { |
| res = add_to_attr_set(s, attr[i]); |
| if (res) |
| return res; |
| } |
| |
| return 0; |
| } |
| |
| static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) |
| { |
| sysfs_remove_group(kobj, &s->group); |
| destroy_attr_set(s); |
| } |
| |
| #define register_attr_set_with_sysfs(_attr_set, _kobj) \ |
| sysfs_create_group(_kobj, &_attr_set->group) |
| |
| static int parse_strtoul(const char *buf, |
| unsigned long max, unsigned long *value) |
| { |
| char *endp; |
| |
| *value = simple_strtoul(skip_spaces(buf), &endp, 0); |
| endp = skip_spaces(endp); |
| if (*endp || *value > max) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static void tpacpi_disable_brightness_delay(void) |
| { |
| if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) |
| pr_notice("ACPI backlight control delay disabled\n"); |
| } |
| |
| static void printk_deprecated_attribute(const char * const what, |
| const char * const details) |
| { |
| tpacpi_log_usertask("deprecated sysfs attribute"); |
| pr_warn("WARNING: sysfs attribute %s is deprecated and " |
| "will be removed. %s\n", |
| what, details); |
| } |
| |
| /************************************************************************* |
| * rfkill and radio control support helpers |
| */ |
| |
| /* |
| * ThinkPad-ACPI firmware handling model: |
| * |
| * WLSW (master wireless switch) is event-driven, and is common to all |
| * firmware-controlled radios. It cannot be controlled, just monitored, |
| * as expected. It overrides all radio state in firmware |
| * |
| * The kernel, a masked-off hotkey, and WLSW can change the radio state |
| * (TODO: verify how WLSW interacts with the returned radio state). |
| * |
| * The only time there are shadow radio state changes, is when |
| * masked-off hotkeys are used. |
| */ |
| |
| /* |
| * Internal driver API for radio state: |
| * |
| * int: < 0 = error, otherwise enum tpacpi_rfkill_state |
| * bool: true means radio blocked (off) |
| */ |
| enum tpacpi_rfkill_state { |
| TPACPI_RFK_RADIO_OFF = 0, |
| TPACPI_RFK_RADIO_ON |
| }; |
| |
| /* rfkill switches */ |
| enum tpacpi_rfk_id { |
| TPACPI_RFK_BLUETOOTH_SW_ID = 0, |
| TPACPI_RFK_WWAN_SW_ID, |
| TPACPI_RFK_UWB_SW_ID, |
| TPACPI_RFK_SW_MAX |
| }; |
| |
| static const char *tpacpi_rfkill_names[] = { |
| [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", |
| [TPACPI_RFK_WWAN_SW_ID] = "wwan", |
| [TPACPI_RFK_UWB_SW_ID] = "uwb", |
| [TPACPI_RFK_SW_MAX] = NULL |
| }; |
| |
| /* ThinkPad-ACPI rfkill subdriver */ |
| struct tpacpi_rfk { |
| struct rfkill *rfkill; |
| enum tpacpi_rfk_id id; |
| const struct tpacpi_rfk_ops *ops; |
| }; |
| |
| struct tpacpi_rfk_ops { |
| /* firmware interface */ |
| int (*get_status)(void); |
| int (*set_status)(const enum tpacpi_rfkill_state); |
| }; |
| |
| static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; |
| |
| /* Query FW and update rfkill sw state for a given rfkill switch */ |
| static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) |
| { |
| int status; |
| |
| if (!tp_rfk) |
| return -ENODEV; |
| |
| status = (tp_rfk->ops->get_status)(); |
| if (status < 0) |
| return status; |
| |
| rfkill_set_sw_state(tp_rfk->rfkill, |
| (status == TPACPI_RFK_RADIO_OFF)); |
| |
| return status; |
| } |
| |
| /* Query FW and update rfkill sw state for all rfkill switches */ |
| static void tpacpi_rfk_update_swstate_all(void) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < TPACPI_RFK_SW_MAX; i++) |
| tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]); |
| } |
| |
| /* |
| * Sync the HW-blocking state of all rfkill switches, |
| * do notice it causes the rfkill core to schedule uevents |
| */ |
| static void tpacpi_rfk_update_hwblock_state(bool blocked) |
| { |
| unsigned int i; |
| struct tpacpi_rfk *tp_rfk; |
| |
| for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { |
| tp_rfk = tpacpi_rfkill_switches[i]; |
| if (tp_rfk) { |
| if (rfkill_set_hw_state(tp_rfk->rfkill, |
| blocked)) { |
| /* ignore -- we track sw block */ |
| } |
| } |
| } |
| } |
| |
| /* Call to get the WLSW state from the firmware */ |
| static int hotkey_get_wlsw(void); |
| |
| /* Call to query WLSW state and update all rfkill switches */ |
| static bool tpacpi_rfk_check_hwblock_state(void) |
| { |
| int res = hotkey_get_wlsw(); |
| int hw_blocked; |
| |
| /* When unknown or unsupported, we have to assume it is unblocked */ |
| if (res < 0) |
| return false; |
| |
| hw_blocked = (res == TPACPI_RFK_RADIO_OFF); |
| tpacpi_rfk_update_hwblock_state(hw_blocked); |
| |
| return hw_blocked; |
| } |
| |
| static int tpacpi_rfk_hook_set_block(void *data, bool blocked) |
| { |
| struct tpacpi_rfk *tp_rfk = data; |
| int res; |
| |
| dbg_printk(TPACPI_DBG_RFKILL, |
| "request to change radio state to %s\n", |
| blocked ? "blocked" : "unblocked"); |
| |
| /* try to set radio state */ |
| res = (tp_rfk->ops->set_status)(blocked ? |
| TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); |
| |
| /* and update the rfkill core with whatever the FW really did */ |
| tpacpi_rfk_update_swstate(tp_rfk); |
| |
| return (res < 0) ? res : 0; |
| } |
| |
| static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { |
| .set_block = tpacpi_rfk_hook_set_block, |
| }; |
| |
| static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, |
| const struct tpacpi_rfk_ops *tp_rfkops, |
| const enum rfkill_type rfktype, |
| const char *name, |
| const bool set_default) |
| { |
| struct tpacpi_rfk *atp_rfk; |
| int res; |
| bool sw_state = false; |
| bool hw_state; |
| int sw_status; |
| |
| BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); |
| |
| atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); |
| if (atp_rfk) |
| atp_rfk->rfkill = rfkill_alloc(name, |
| &tpacpi_pdev->dev, |
| rfktype, |
| &tpacpi_rfk_rfkill_ops, |
| atp_rfk); |
| if (!atp_rfk || !atp_rfk->rfkill) { |
| pr_err("failed to allocate memory for rfkill class\n"); |
| kfree(atp_rfk); |
| return -ENOMEM; |
| } |
| |
| atp_rfk->id = id; |
| atp_rfk->ops = tp_rfkops; |
| |
| sw_status = (tp_rfkops->get_status)(); |
| if (sw_status < 0) { |
| pr_err("failed to read initial state for %s, error %d\n", |
| name, sw_status); |
| } else { |
| sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); |
| if (set_default) { |
| /* try to keep the initial state, since we ask the |
| * firmware to preserve it across S5 in NVRAM */ |
| rfkill_init_sw_state(atp_rfk->rfkill, sw_state); |
| } |
| } |
| hw_state = tpacpi_rfk_check_hwblock_state(); |
| rfkill_set_hw_state(atp_rfk->rfkill, hw_state); |
| |
| res = rfkill_register(atp_rfk->rfkill); |
| if (res < 0) { |
| pr_err("failed to register %s rfkill switch: %d\n", name, res); |
| rfkill_destroy(atp_rfk->rfkill); |
| kfree(atp_rfk); |
| return res; |
| } |
| |
| tpacpi_rfkill_switches[id] = atp_rfk; |
| |
| pr_info("rfkill switch %s: radio is %sblocked\n", |
| name, (sw_state || hw_state) ? "" : "un"); |
| return 0; |
| } |
| |
| static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) |
| { |
| struct tpacpi_rfk *tp_rfk; |
| |
| BUG_ON(id >= TPACPI_RFK_SW_MAX); |
| |
| tp_rfk = tpacpi_rfkill_switches[id]; |
| if (tp_rfk) { |
| rfkill_unregister(tp_rfk->rfkill); |
| rfkill_destroy(tp_rfk->rfkill); |
| tpacpi_rfkill_switches[id] = NULL; |
| kfree(tp_rfk); |
| } |
| } |
| |
| static void printk_deprecated_rfkill_attribute(const char * const what) |
| { |
| printk_deprecated_attribute(what, |
| "Please switch to generic rfkill before year 2010"); |
| } |
| |
| /* sysfs <radio> enable ------------------------------------------------ */ |
| static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int status; |
| |
| printk_deprecated_rfkill_attribute(attr->attr.name); |
| |
| /* This is in the ABI... */ |
| if (tpacpi_rfk_check_hwblock_state()) { |
| status = TPACPI_RFK_RADIO_OFF; |
| } else { |
| status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); |
| if (status < 0) |
| return status; |
| } |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", |
| (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); |
| } |
| |
| static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| int res; |
| |
| printk_deprecated_rfkill_attribute(attr->attr.name); |
| |
| if (parse_strtoul(buf, 1, &t)) |
| return -EINVAL; |
| |
| tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); |
| |
| /* This is in the ABI... */ |
| if (tpacpi_rfk_check_hwblock_state() && !!t) |
| return -EPERM; |
| |
| res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? |
| TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); |
| tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); |
| |
| return (res < 0) ? res : count; |
| } |
| |
| /* procfs -------------------------------------------------------------- */ |
| static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) |
| { |
| if (id >= TPACPI_RFK_SW_MAX) |
| seq_printf(m, "status:\t\tnot supported\n"); |
| else { |
| int status; |
| |
| /* This is in the ABI... */ |
| if (tpacpi_rfk_check_hwblock_state()) { |
| status = TPACPI_RFK_RADIO_OFF; |
| } else { |
| status = tpacpi_rfk_update_swstate( |
| tpacpi_rfkill_switches[id]); |
| if (status < 0) |
| return status; |
| } |
| |
| seq_printf(m, "status:\t\t%s\n", |
| (status == TPACPI_RFK_RADIO_ON) ? |
| "enabled" : "disabled"); |
| seq_printf(m, "commands:\tenable, disable\n"); |
| } |
| |
| return 0; |
| } |
| |
| static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) |
| { |
| char *cmd; |
| int status = -1; |
| int res = 0; |
| |
| if (id >= TPACPI_RFK_SW_MAX) |
| return -ENODEV; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "enable") == 0) |
| status = TPACPI_RFK_RADIO_ON; |
| else if (strlencmp(cmd, "disable") == 0) |
| status = TPACPI_RFK_RADIO_OFF; |
| else |
| return -EINVAL; |
| } |
| |
| if (status != -1) { |
| tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", |
| (status == TPACPI_RFK_RADIO_ON) ? |
| "enable" : "disable", |
| tpacpi_rfkill_names[id]); |
| res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); |
| tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); |
| } |
| |
| return res; |
| } |
| |
| /************************************************************************* |
| * thinkpad-acpi driver attributes |
| */ |
| |
| /* interface_version --------------------------------------------------- */ |
| static ssize_t tpacpi_driver_interface_version_show( |
| struct device_driver *drv, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); |
| } |
| |
| static DRIVER_ATTR(interface_version, S_IRUGO, |
| tpacpi_driver_interface_version_show, NULL); |
| |
| /* debug_level --------------------------------------------------------- */ |
| static ssize_t tpacpi_driver_debug_show(struct device_driver *drv, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); |
| } |
| |
| static ssize_t tpacpi_driver_debug_store(struct device_driver *drv, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| |
| if (parse_strtoul(buf, 0xffff, &t)) |
| return -EINVAL; |
| |
| dbg_level = t; |
| |
| return count; |
| } |
| |
| static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, |
| tpacpi_driver_debug_show, tpacpi_driver_debug_store); |
| |
| /* version ------------------------------------------------------------- */ |
| static ssize_t tpacpi_driver_version_show(struct device_driver *drv, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%s v%s\n", |
| TPACPI_DESC, TPACPI_VERSION); |
| } |
| |
| static DRIVER_ATTR(version, S_IRUGO, |
| tpacpi_driver_version_show, NULL); |
| |
| /* --------------------------------------------------------------------- */ |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| |
| /* wlsw_emulstate ------------------------------------------------------ */ |
| static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate); |
| } |
| |
| static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| |
| if (parse_strtoul(buf, 1, &t)) |
| return -EINVAL; |
| |
| if (tpacpi_wlsw_emulstate != !!t) { |
| tpacpi_wlsw_emulstate = !!t; |
| tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ |
| } |
| |
| return count; |
| } |
| |
| static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO, |
| tpacpi_driver_wlsw_emulstate_show, |
| tpacpi_driver_wlsw_emulstate_store); |
| |
| /* bluetooth_emulstate ------------------------------------------------- */ |
| static ssize_t tpacpi_driver_bluetooth_emulstate_show( |
| struct device_driver *drv, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate); |
| } |
| |
| static ssize_t tpacpi_driver_bluetooth_emulstate_store( |
| struct device_driver *drv, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| |
| if (parse_strtoul(buf, 1, &t)) |
| return -EINVAL; |
| |
| tpacpi_bluetooth_emulstate = !!t; |
| |
| return count; |
| } |
| |
| static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO, |
| tpacpi_driver_bluetooth_emulstate_show, |
| tpacpi_driver_bluetooth_emulstate_store); |
| |
| /* wwan_emulstate ------------------------------------------------- */ |
| static ssize_t tpacpi_driver_wwan_emulstate_show( |
| struct device_driver *drv, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate); |
| } |
| |
| static ssize_t tpacpi_driver_wwan_emulstate_store( |
| struct device_driver *drv, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| |
| if (parse_strtoul(buf, 1, &t)) |
| return -EINVAL; |
| |
| tpacpi_wwan_emulstate = !!t; |
| |
| return count; |
| } |
| |
| static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO, |
| tpacpi_driver_wwan_emulstate_show, |
| tpacpi_driver_wwan_emulstate_store); |
| |
| /* uwb_emulstate ------------------------------------------------- */ |
| static ssize_t tpacpi_driver_uwb_emulstate_show( |
| struct device_driver *drv, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate); |
| } |
| |
| static ssize_t tpacpi_driver_uwb_emulstate_store( |
| struct device_driver *drv, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| |
| if (parse_strtoul(buf, 1, &t)) |
| return -EINVAL; |
| |
| tpacpi_uwb_emulstate = !!t; |
| |
| return count; |
| } |
| |
| static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO, |
| tpacpi_driver_uwb_emulstate_show, |
| tpacpi_driver_uwb_emulstate_store); |
| #endif |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static struct driver_attribute *tpacpi_driver_attributes[] = { |
| &driver_attr_debug_level, &driver_attr_version, |
| &driver_attr_interface_version, |
| }; |
| |
| static int __init tpacpi_create_driver_attributes(struct device_driver *drv) |
| { |
| int i, res; |
| |
| i = 0; |
| res = 0; |
| while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { |
| res = driver_create_file(drv, tpacpi_driver_attributes[i]); |
| i++; |
| } |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| if (!res && dbg_wlswemul) |
| res = driver_create_file(drv, &driver_attr_wlsw_emulstate); |
| if (!res && dbg_bluetoothemul) |
| res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); |
| if (!res && dbg_wwanemul) |
| res = driver_create_file(drv, &driver_attr_wwan_emulstate); |
| if (!res && dbg_uwbemul) |
| res = driver_create_file(drv, &driver_attr_uwb_emulstate); |
| #endif |
| |
| return res; |
| } |
| |
| static void tpacpi_remove_driver_attributes(struct device_driver *drv) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) |
| driver_remove_file(drv, tpacpi_driver_attributes[i]); |
| |
| #ifdef THINKPAD_ACPI_DEBUGFACILITIES |
| driver_remove_file(drv, &driver_attr_wlsw_emulstate); |
| driver_remove_file(drv, &driver_attr_bluetooth_emulstate); |
| driver_remove_file(drv, &driver_attr_wwan_emulstate); |
| driver_remove_file(drv, &driver_attr_uwb_emulstate); |
| #endif |
| } |
| |
| /************************************************************************* |
| * Firmware Data |
| */ |
| |
| /* |
| * Table of recommended minimum BIOS versions |
| * |
| * Reasons for listing: |
| * 1. Stable BIOS, listed because the unknown amount of |
| * bugs and bad ACPI behaviour on older versions |
| * |
| * 2. BIOS or EC fw with known bugs that trigger on Linux |
| * |
| * 3. BIOS with known reduced functionality in older versions |
| * |
| * We recommend the latest BIOS and EC version. |
| * We only support the latest BIOS and EC fw version as a rule. |
| * |
| * Sources: IBM ThinkPad Public Web Documents (update changelogs), |
| * Information from users in ThinkWiki |
| * |
| * WARNING: we use this table also to detect that the machine is |
| * a ThinkPad in some cases, so don't remove entries lightly. |
| */ |
| |
| #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ |
| { .vendor = (__v), \ |
| .bios = TPID(__id1, __id2), \ |
| .ec = TPACPI_MATCH_ANY, \ |
| .quirks = TPACPI_MATCH_ANY << 16 \ |
| | (__bv1) << 8 | (__bv2) } |
| |
| #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ |
| __eid, __ev1, __ev2) \ |
| { .vendor = (__v), \ |
| .bios = TPID(__bid1, __bid2), \ |
| .ec = __eid, \ |
| .quirks = (__ev1) << 24 | (__ev2) << 16 \ |
| | (__bv1) << 8 | (__bv2) } |
| |
| #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ |
| TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) |
| |
| /* Outdated IBM BIOSes often lack the EC id string */ |
| #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ |
| TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ |
| __bv1, __bv2, TPID(__id1, __id2), \ |
| __ev1, __ev2), \ |
| TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ |
| __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ |
| __ev1, __ev2) |
| |
| /* Outdated IBM BIOSes often lack the EC id string */ |
| #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ |
| __eid1, __eid2, __ev1, __ev2) \ |
| TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ |
| __bv1, __bv2, TPID(__eid1, __eid2), \ |
| __ev1, __ev2), \ |
| TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ |
| __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ |
| __ev1, __ev2) |
| |
| #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ |
| TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) |
| |
| #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ |
| TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ |
| __bv1, __bv2, TPID(__id1, __id2), \ |
| __ev1, __ev2) |
| |
| #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ |
| __eid1, __eid2, __ev1, __ev2) \ |
| TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ |
| __bv1, __bv2, TPID(__eid1, __eid2), \ |
| __ev1, __ev2) |
| |
| static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { |
| /* Numeric models ------------------ */ |
| /* FW MODEL BIOS VERS */ |
| TPV_QI0('I', 'M', '6', '5'), /* 570 */ |
| TPV_QI0('I', 'U', '2', '6'), /* 570E */ |
| TPV_QI0('I', 'B', '5', '4'), /* 600 */ |
| TPV_QI0('I', 'H', '4', '7'), /* 600E */ |
| TPV_QI0('I', 'N', '3', '6'), /* 600E */ |
| TPV_QI0('I', 'T', '5', '5'), /* 600X */ |
| TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ |
| TPV_QI0('I', 'I', '4', '2'), /* 770X */ |
| TPV_QI0('I', 'O', '2', '3'), /* 770Z */ |
| |
| /* A-series ------------------------- */ |
| /* FW MODEL BIOS VERS EC VERS */ |
| TPV_QI0('I', 'W', '5', '9'), /* A20m */ |
| TPV_QI0('I', 'V', '6', '9'), /* A20p */ |
| TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ |
| TPV_QI0('K', 'U', '3', '6'), /* A21e */ |
| TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ |
| TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ |
| TPV_QI0('1', 'B', '1', '7'), /* A22e */ |
| TPV_QI0('1', '3', '2', '0'), /* A22m */ |
| TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ |
| TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ |
| TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ |
| |
| /* G-series ------------------------- */ |
| /* FW MODEL BIOS VERS */ |
| TPV_QI0('1', 'T', 'A', '6'), /* G40 */ |
| TPV_QI0('1', 'X', '5', '7'), /* G41 */ |
| |
| /* R-series, T-series --------------- */ |
| /* FW MODEL BIOS VERS EC VERS */ |
| TPV_QI0('1', 'C', 'F', '0'), /* R30 */ |
| TPV_QI0('1', 'F', 'F', '1'), /* R31 */ |
| TPV_QI0('1', 'M', '9', '7'), /* R32 */ |
| TPV_QI0('1', 'O', '6', '1'), /* R40 */ |
| TPV_QI0('1', 'P', '6', '5'), /* R40 */ |
| TPV_QI0('1', 'S', '7', '0'), /* R40e */ |
| TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, |
| T40/p, T41/p, T42/p (1) */ |
| TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ |
| TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ |
| TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ |
| TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ |
| |
| TPV_QI0('I', 'Y', '6', '1'), /* T20 */ |
| TPV_QI0('K', 'Z', '3', '4'), /* T21 */ |
| TPV_QI0('1', '6', '3', '2'), /* T22 */ |
| TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ |
| TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ |
| TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ |
| |
| TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ |
| TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ |
| TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ |
| |
| /* BIOS FW BIOS VERS EC FW EC VERS */ |
| TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ |
| TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ |
| |
| /* X-series ------------------------- */ |
| /* FW MODEL BIOS VERS EC VERS */ |
| TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ |
| TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ |
| TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ |
| TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ |
| TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ |
| TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ |
| TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ |
| |
| TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ |
| TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ |
| |
| /* (0) - older versions lack DMI EC fw string and functionality */ |
| /* (1) - older versions known to lack functionality */ |
| }; |
| |
| #undef TPV_QL1 |
| #undef TPV_QL0 |
| #undef TPV_QI2 |
| #undef TPV_QI1 |
| #undef TPV_QI0 |
| #undef TPV_Q_X |
| #undef TPV_Q |
| |
| static void __init tpacpi_check_outdated_fw(void) |
| { |
| unsigned long fwvers; |
| u16 ec_version, bios_version; |
| |
| fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, |
| ARRAY_SIZE(tpacpi_bios_version_qtable)); |
| |
| if (!fwvers) |
| return; |
| |
| bios_version = fwvers & 0xffffU; |
| ec_version = (fwvers >> 16) & 0xffffU; |
| |
| /* note that unknown versions are set to 0x0000 and we use that */ |
| if ((bios_version > thinkpad_id.bios_release) || |
| (ec_version > thinkpad_id.ec_release && |
| ec_version != TPACPI_MATCH_ANY)) { |
| /* |
| * The changelogs would let us track down the exact |
| * reason, but it is just too much of a pain to track |
| * it. We only list BIOSes that are either really |
| * broken, or really stable to begin with, so it is |
| * best if the user upgrades the firmware anyway. |
| */ |
| pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); |
| pr_warn("WARNING: This firmware may be missing critical bug " |
| "fixes and/or important features\n"); |
| } |
| } |
| |
| static bool __init tpacpi_is_fw_known(void) |
| { |
| return tpacpi_check_quirks(tpacpi_bios_version_qtable, |
| ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; |
| } |
| |
| /**************************************************************************** |
| **************************************************************************** |
| * |
| * Subdrivers |
| * |
| **************************************************************************** |
| ****************************************************************************/ |
| |
| /************************************************************************* |
| * thinkpad-acpi metadata subdriver |
| */ |
| |
| static int thinkpad_acpi_driver_read(struct seq_file *m) |
| { |
| seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); |
| seq_printf(m, "version:\t%s\n", TPACPI_VERSION); |
| return 0; |
| } |
| |
| static struct ibm_struct thinkpad_acpi_driver_data = { |
| .name = "driver", |
| .read = thinkpad_acpi_driver_read, |
| }; |
| |
| /************************************************************************* |
| * Hotkey subdriver |
| */ |
| |
| /* |
| * ThinkPad firmware event model |
| * |
| * The ThinkPad firmware has two main event interfaces: normal ACPI |
| * notifications (which follow the ACPI standard), and a private event |
| * interface. |
| * |
| * The private event interface also issues events for the hotkeys. As |
| * the driver gained features, the event handling code ended up being |
| * built around the hotkey subdriver. This will need to be refactored |
| * to a more formal event API eventually. |
| * |
| * Some "hotkeys" are actually supposed to be used as event reports, |
| * such as "brightness has changed", "volume has changed", depending on |
| * the ThinkPad model and how the firmware is operating. |
| * |
| * Unlike other classes, hotkey-class events have mask/unmask control on |
| * non-ancient firmware. However, how it behaves changes a lot with the |
| * firmware model and version. |
| */ |
| |
| enum { /* hot key scan codes (derived from ACPI DSDT) */ |
| TP_ACPI_HOTKEYSCAN_FNF1 = 0, |
| TP_ACPI_HOTKEYSCAN_FNF2, |
| TP_ACPI_HOTKEYSCAN_FNF3, |
| TP_ACPI_HOTKEYSCAN_FNF4, |
| TP_ACPI_HOTKEYSCAN_FNF5, |
| TP_ACPI_HOTKEYSCAN_FNF6, |
| TP_ACPI_HOTKEYSCAN_FNF7, |
| TP_ACPI_HOTKEYSCAN_FNF8, |
| TP_ACPI_HOTKEYSCAN_FNF9, |
| TP_ACPI_HOTKEYSCAN_FNF10, |
| TP_ACPI_HOTKEYSCAN_FNF11, |
| TP_ACPI_HOTKEYSCAN_FNF12, |
| TP_ACPI_HOTKEYSCAN_FNBACKSPACE, |
| TP_ACPI_HOTKEYSCAN_FNINSERT, |
| TP_ACPI_HOTKEYSCAN_FNDELETE, |
| TP_ACPI_HOTKEYSCAN_FNHOME, |
| TP_ACPI_HOTKEYSCAN_FNEND, |
| TP_ACPI_HOTKEYSCAN_FNPAGEUP, |
| TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, |
| TP_ACPI_HOTKEYSCAN_FNSPACE, |
| TP_ACPI_HOTKEYSCAN_VOLUMEUP, |
| TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, |
| TP_ACPI_HOTKEYSCAN_MUTE, |
| TP_ACPI_HOTKEYSCAN_THINKPAD, |
| TP_ACPI_HOTKEYSCAN_UNK1, |
| TP_ACPI_HOTKEYSCAN_UNK2, |
| TP_ACPI_HOTKEYSCAN_UNK3, |
| TP_ACPI_HOTKEYSCAN_UNK4, |
| TP_ACPI_HOTKEYSCAN_UNK5, |
| TP_ACPI_HOTKEYSCAN_UNK6, |
| TP_ACPI_HOTKEYSCAN_UNK7, |
| TP_ACPI_HOTKEYSCAN_UNK8, |
| |
| TP_ACPI_HOTKEYSCAN_MUTE2, |
| TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, |
| TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, |
| TP_ACPI_HOTKEYSCAN_CLOUD, |
| TP_ACPI_HOTKEYSCAN_UNK9, |
| TP_ACPI_HOTKEYSCAN_VOICE, |
| TP_ACPI_HOTKEYSCAN_UNK10, |
| TP_ACPI_HOTKEYSCAN_GESTURES, |
| TP_ACPI_HOTKEYSCAN_UNK11, |
| TP_ACPI_HOTKEYSCAN_UNK12, |
| TP_ACPI_HOTKEYSCAN_UNK13, |
| TP_ACPI_HOTKEYSCAN_CONFIG, |
| TP_ACPI_HOTKEYSCAN_NEW_TAB, |
| TP_ACPI_HOTKEYSCAN_RELOAD, |
| TP_ACPI_HOTKEYSCAN_BACK, |
| TP_ACPI_HOTKEYSCAN_MIC_DOWN, |
| TP_ACPI_HOTKEYSCAN_MIC_UP, |
| TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, |
| TP_ACPI_HOTKEYSCAN_CAMERA_MODE, |
| TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, |
| |
| /* Hotkey keymap size */ |
| TPACPI_HOTKEY_MAP_LEN |
| }; |
| |
| enum { /* Keys/events available through NVRAM polling */ |
| TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, |
| TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, |
| }; |
| |
| enum { /* Positions of some of the keys in hotkey masks */ |
| TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, |
| TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, |
| TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, |
| TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, |
| TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, |
| TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, |
| TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, |
| TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, |
| TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, |
| TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, |
| TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, |
| }; |
| |
| enum { /* NVRAM to ACPI HKEY group map */ |
| TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | |
| TP_ACPI_HKEY_ZOOM_MASK | |
| TP_ACPI_HKEY_DISPSWTCH_MASK | |
| TP_ACPI_HKEY_HIBERNATE_MASK, |
| TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | |
| TP_ACPI_HKEY_BRGHTDWN_MASK, |
| TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | |
| TP_ACPI_HKEY_VOLDWN_MASK | |
| TP_ACPI_HKEY_MUTE_MASK, |
| }; |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| struct tp_nvram_state { |
| u16 thinkpad_toggle:1; |
| u16 zoom_toggle:1; |
| u16 display_toggle:1; |
| u16 thinklight_toggle:1; |
| u16 hibernate_toggle:1; |
| u16 displayexp_toggle:1; |
| u16 display_state:1; |
| u16 brightness_toggle:1; |
| u16 volume_toggle:1; |
| u16 mute:1; |
| |
| u8 brightness_level; |
| u8 volume_level; |
| }; |
| |
| /* kthread for the hotkey poller */ |
| static struct task_struct *tpacpi_hotkey_task; |
| |
| /* |
| * Acquire mutex to write poller control variables as an |
| * atomic block. |
| * |
| * Increment hotkey_config_change when changing them if you |
| * want the kthread to forget old state. |
| * |
| * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END |
| */ |
| static struct mutex hotkey_thread_data_mutex; |
| static unsigned int hotkey_config_change; |
| |
| /* |
| * hotkey poller control variables |
| * |
| * Must be atomic or readers will also need to acquire mutex |
| * |
| * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END |
| * should be used only when the changes need to be taken as |
| * a block, OR when one needs to force the kthread to forget |
| * old state. |
| */ |
| static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ |
| static unsigned int hotkey_poll_freq = 10; /* Hz */ |
| |
| #define HOTKEY_CONFIG_CRITICAL_START \ |
| do { \ |
| mutex_lock(&hotkey_thread_data_mutex); \ |
| hotkey_config_change++; \ |
| } while (0); |
| #define HOTKEY_CONFIG_CRITICAL_END \ |
| mutex_unlock(&hotkey_thread_data_mutex); |
| |
| #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| |
| #define hotkey_source_mask 0U |
| #define HOTKEY_CONFIG_CRITICAL_START |
| #define HOTKEY_CONFIG_CRITICAL_END |
| |
| #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| |
| static struct mutex hotkey_mutex; |
| |
| static enum { /* Reasons for waking up */ |
| TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ |
| TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ |
| TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ |
| } hotkey_wakeup_reason; |
| |
| static int hotkey_autosleep_ack; |
| |
| static u32 hotkey_orig_mask; /* events the BIOS had enabled */ |
| static u32 hotkey_all_mask; /* all events supported in fw */ |
| static u32 hotkey_reserved_mask; /* events better left disabled */ |
| static u32 hotkey_driver_mask; /* events needed by the driver */ |
| static u32 hotkey_user_mask; /* events visible to userspace */ |
| static u32 hotkey_acpi_mask; /* events enabled in firmware */ |
| |
| static u16 *hotkey_keycode_map; |
| |
| static struct attribute_set *hotkey_dev_attributes; |
| |
| static void tpacpi_driver_event(const unsigned int hkey_event); |
| static void hotkey_driver_event(const unsigned int scancode); |
| static void hotkey_poll_setup(const bool may_warn); |
| |
| /* HKEY.MHKG() return bits */ |
| #define TP_HOTKEY_TABLET_MASK (1 << 3) |
| |
| static int hotkey_get_wlsw(void) |
| { |
| int status; |
| |
| if (!tp_features.hotkey_wlsw) |
| return -ENODEV; |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| if (dbg_wlswemul) |
| return (tpacpi_wlsw_emulstate) ? |
| TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
| #endif |
| |
| if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) |
| return -EIO; |
| |
| return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
| } |
| |
| static int hotkey_get_tablet_mode(int *status) |
| { |
| int s; |
| |
| if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) |
| return -EIO; |
| |
| *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); |
| return 0; |
| } |
| |
| /* |
| * Reads current event mask from firmware, and updates |
| * hotkey_acpi_mask accordingly. Also resets any bits |
| * from hotkey_user_mask that are unavailable to be |
| * delivered (shadow requirement of the userspace ABI). |
| * |
| * Call with hotkey_mutex held |
| */ |
| static int hotkey_mask_get(void) |
| { |
| if (tp_features.hotkey_mask) { |
| u32 m = 0; |
| |
| if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) |
| return -EIO; |
| |
| hotkey_acpi_mask = m; |
| } else { |
| /* no mask support doesn't mean no event support... */ |
| hotkey_acpi_mask = hotkey_all_mask; |
| } |
| |
| /* sync userspace-visible mask */ |
| hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); |
| |
| return 0; |
| } |
| |
| static void hotkey_mask_warn_incomplete_mask(void) |
| { |
| /* log only what the user can fix... */ |
| const u32 wantedmask = hotkey_driver_mask & |
| ~(hotkey_acpi_mask | hotkey_source_mask) & |
| (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); |
| |
| if (wantedmask) |
| pr_notice("required events 0x%08x not enabled!\n", wantedmask); |
| } |
| |
| /* |
| * Set the firmware mask when supported |
| * |
| * Also calls hotkey_mask_get to update hotkey_acpi_mask. |
| * |
| * NOTE: does not set bits in hotkey_user_mask, but may reset them. |
| * |
| * Call with hotkey_mutex held |
| */ |
| static int hotkey_mask_set(u32 mask) |
| { |
| int i; |
| int rc = 0; |
| |
| const u32 fwmask = mask & ~hotkey_source_mask; |
| |
| if (tp_features.hotkey_mask) { |
| for (i = 0; i < 32; i++) { |
| if (!acpi_evalf(hkey_handle, |
| NULL, "MHKM", "vdd", i + 1, |
| !!(mask & (1 << i)))) { |
| rc = -EIO; |
| break; |
| } |
| } |
| } |
| |
| /* |
| * We *must* make an inconditional call to hotkey_mask_get to |
| * refresh hotkey_acpi_mask and update hotkey_user_mask |
| * |
| * Take the opportunity to also log when we cannot _enable_ |
| * a given event. |
| */ |
| if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { |
| pr_notice("asked for hotkey mask 0x%08x, but " |
| "firmware forced it to 0x%08x\n", |
| fwmask, hotkey_acpi_mask); |
| } |
| |
| if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) |
| hotkey_mask_warn_incomplete_mask(); |
| |
| return rc; |
| } |
| |
| /* |
| * Sets hotkey_user_mask and tries to set the firmware mask |
| * |
| * Call with hotkey_mutex held |
| */ |
| static int hotkey_user_mask_set(const u32 mask) |
| { |
| int rc; |
| |
| /* Give people a chance to notice they are doing something that |
| * is bound to go boom on their users sooner or later */ |
| if (!tp_warned.hotkey_mask_ff && |
| (mask == 0xffff || mask == 0xffffff || |
| mask == 0xffffffff)) { |
| tp_warned.hotkey_mask_ff = 1; |
| pr_notice("setting the hotkey mask to 0x%08x is likely " |
| "not the best way to go about it\n", mask); |
| pr_notice("please consider using the driver defaults, " |
| "and refer to up-to-date thinkpad-acpi " |
| "documentation\n"); |
| } |
| |
| /* Try to enable what the user asked for, plus whatever we need. |
| * this syncs everything but won't enable bits in hotkey_user_mask */ |
| rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); |
| |
| /* Enable the available bits in hotkey_user_mask */ |
| hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); |
| |
| return rc; |
| } |
| |
| /* |
| * Sets the driver hotkey mask. |
| * |
| * Can be called even if the hotkey subdriver is inactive |
| */ |
| static int tpacpi_hotkey_driver_mask_set(const u32 mask) |
| { |
| int rc; |
| |
| /* Do the right thing if hotkey_init has not been called yet */ |
| if (!tp_features.hotkey) { |
| hotkey_driver_mask = mask; |
| return 0; |
| } |
| |
| mutex_lock(&hotkey_mutex); |
| |
| HOTKEY_CONFIG_CRITICAL_START |
| hotkey_driver_mask = mask; |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| hotkey_source_mask |= (mask & ~hotkey_all_mask); |
| #endif |
| HOTKEY_CONFIG_CRITICAL_END |
| |
| rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & |
| ~hotkey_source_mask); |
| hotkey_poll_setup(true); |
| |
| mutex_unlock(&hotkey_mutex); |
| |
| return rc; |
| } |
| |
| static int hotkey_status_get(int *status) |
| { |
| if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| static int hotkey_status_set(bool enable) |
| { |
| if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| static void tpacpi_input_send_tabletsw(void) |
| { |
| int state; |
| |
| if (tp_features.hotkey_tablet && |
| !hotkey_get_tablet_mode(&state)) { |
| mutex_lock(&tpacpi_inputdev_send_mutex); |
| |
| input_report_switch(tpacpi_inputdev, |
| SW_TABLET_MODE, !!state); |
| input_sync(tpacpi_inputdev); |
| |
| mutex_unlock(&tpacpi_inputdev_send_mutex); |
| } |
| } |
| |
| /* Do NOT call without validating scancode first */ |
| static void tpacpi_input_send_key(const unsigned int scancode) |
| { |
| const unsigned int keycode = hotkey_keycode_map[scancode]; |
| |
| if (keycode != KEY_RESERVED) { |
| mutex_lock(&tpacpi_inputdev_send_mutex); |
| |
| input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); |
| input_report_key(tpacpi_inputdev, keycode, 1); |
| input_sync(tpacpi_inputdev); |
| |
| input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); |
| input_report_key(tpacpi_inputdev, keycode, 0); |
| input_sync(tpacpi_inputdev); |
| |
| mutex_unlock(&tpacpi_inputdev_send_mutex); |
| } |
| } |
| |
| /* Do NOT call without validating scancode first */ |
| static void tpacpi_input_send_key_masked(const unsigned int scancode) |
| { |
| hotkey_driver_event(scancode); |
| if (hotkey_user_mask & (1 << scancode)) |
| tpacpi_input_send_key(scancode); |
| } |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; |
| |
| /* Do NOT call without validating scancode first */ |
| static void tpacpi_hotkey_send_key(unsigned int scancode) |
| { |
| tpacpi_input_send_key_masked(scancode); |
| } |
| |
| static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) |
| { |
| u8 d; |
| |
| if (m & TP_NVRAM_HKEY_GROUP_HK2) { |
| d = nvram_read_byte(TP_NVRAM_ADDR_HK2); |
| n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); |
| n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); |
| n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); |
| n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); |
| } |
| if (m & TP_ACPI_HKEY_THNKLGHT_MASK) { |
| d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); |
| n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); |
| } |
| if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { |
| d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); |
| n->displayexp_toggle = |
| !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); |
| } |
| if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { |
| d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); |
| n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) |
| >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; |
| n->brightness_toggle = |
| !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); |
| } |
| if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { |
| d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); |
| n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) |
| >> TP_NVRAM_POS_LEVEL_VOLUME; |
| n->mute = !!(d & TP_NVRAM_MASK_MUTE); |
| n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); |
| } |
| } |
| |
| #define TPACPI_COMPARE_KEY(__scancode, __member) \ |
| do { \ |
| if ((event_mask & (1 << __scancode)) && \ |
| oldn->__member != newn->__member) \ |
| tpacpi_hotkey_send_key(__scancode); \ |
| } while (0) |
| |
| #define TPACPI_MAY_SEND_KEY(__scancode) \ |
| do { \ |
| if (event_mask & (1 << __scancode)) \ |
| tpacpi_hotkey_send_key(__scancode); \ |
| } while (0) |
| |
| static void issue_volchange(const unsigned int oldvol, |
| const unsigned int newvol, |
| const u32 event_mask) |
| { |
| unsigned int i = oldvol; |
| |
| while (i > newvol) { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); |
| i--; |
| } |
| while (i < newvol) { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); |
| i++; |
| } |
| } |
| |
| static void issue_brightnesschange(const unsigned int oldbrt, |
| const unsigned int newbrt, |
| const u32 event_mask) |
| { |
| unsigned int i = oldbrt; |
| |
| while (i > newbrt) { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); |
| i--; |
| } |
| while (i < newbrt) { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); |
| i++; |
| } |
| } |
| |
| static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, |
| struct tp_nvram_state *newn, |
| const u32 event_mask) |
| { |
| |
| TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); |
| TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); |
| TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); |
| TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); |
| |
| TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); |
| |
| TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); |
| |
| /* |
| * Handle volume |
| * |
| * This code is supposed to duplicate the IBM firmware behaviour: |
| * - Pressing MUTE issues mute hotkey message, even when already mute |
| * - Pressing Volume up/down issues volume up/down hotkey messages, |
| * even when already at maximum or minimum volume |
| * - The act of unmuting issues volume up/down notification, |
| * depending which key was used to unmute |
| * |
| * We are constrained to what the NVRAM can tell us, which is not much |
| * and certainly not enough if more than one volume hotkey was pressed |
| * since the last poll cycle. |
| * |
| * Just to make our life interesting, some newer Lenovo ThinkPads have |
| * bugs in the BIOS and may fail to update volume_toggle properly. |
| */ |
| if (newn->mute) { |
| /* muted */ |
| if (!oldn->mute || |
| oldn->volume_toggle != newn->volume_toggle || |
| oldn->volume_level != newn->volume_level) { |
| /* recently muted, or repeated mute keypress, or |
| * multiple presses ending in mute */ |
| issue_volchange(oldn->volume_level, newn->volume_level, |
| event_mask); |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); |
| } |
| } else { |
| /* unmute */ |
| if (oldn->mute) { |
| /* recently unmuted, issue 'unmute' keypress */ |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); |
| } |
| if (oldn->volume_level != newn->volume_level) { |
| issue_volchange(oldn->volume_level, newn->volume_level, |
| event_mask); |
| } else if (oldn->volume_toggle != newn->volume_toggle) { |
| /* repeated vol up/down keypress at end of scale ? */ |
| if (newn->volume_level == 0) |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); |
| else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); |
| } |
| } |
| |
| /* handle brightness */ |
| if (oldn->brightness_level != newn->brightness_level) { |
| issue_brightnesschange(oldn->brightness_level, |
| newn->brightness_level, event_mask); |
| } else if (oldn->brightness_toggle != newn->brightness_toggle) { |
| /* repeated key presses that didn't change state */ |
| if (newn->brightness_level == 0) |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); |
| else if (newn->brightness_level >= bright_maxlvl |
| && !tp_features.bright_unkfw) |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); |
| } |
| |
| #undef TPACPI_COMPARE_KEY |
| #undef TPACPI_MAY_SEND_KEY |
| } |
| |
| /* |
| * Polling driver |
| * |
| * We track all events in hotkey_source_mask all the time, since |
| * most of them are edge-based. We only issue those requested by |
| * hotkey_user_mask or hotkey_driver_mask, though. |
| */ |
| static int hotkey_kthread(void *data) |
| { |
| struct tp_nvram_state s[2]; |
| u32 poll_mask, event_mask; |
| unsigned int si, so; |
| unsigned long t; |
| unsigned int change_detector; |
| unsigned int poll_freq; |
| bool was_frozen; |
| |
| if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) |
| goto exit; |
| |
| set_freezable(); |
| |
| so = 0; |
| si = 1; |
| t = 0; |
| |
| /* Initial state for compares */ |
| mutex_lock(&hotkey_thread_data_mutex); |
| change_detector = hotkey_config_change; |
| poll_mask = hotkey_source_mask; |
| event_mask = hotkey_source_mask & |
| (hotkey_driver_mask | hotkey_user_mask); |
| poll_freq = hotkey_poll_freq; |
| mutex_unlock(&hotkey_thread_data_mutex); |
| hotkey_read_nvram(&s[so], poll_mask); |
| |
| while (!kthread_should_stop()) { |
| if (t == 0) { |
| if (likely(poll_freq)) |
| t = 1000/poll_freq; |
| else |
| t = 100; /* should never happen... */ |
| } |
| t = msleep_interruptible(t); |
| if (unlikely(kthread_freezable_should_stop(&was_frozen))) |
| break; |
| |
| if (t > 0 && !was_frozen) |
| continue; |
| |
| mutex_lock(&hotkey_thread_data_mutex); |
| if (was_frozen || hotkey_config_change != change_detector) { |
| /* forget old state on thaw or config change */ |
| si = so; |
| t = 0; |
| change_detector = hotkey_config_change; |
| } |
| poll_mask = hotkey_source_mask; |
| event_mask = hotkey_source_mask & |
| (hotkey_driver_mask | hotkey_user_mask); |
| poll_freq = hotkey_poll_freq; |
| mutex_unlock(&hotkey_thread_data_mutex); |
| |
| if (likely(poll_mask)) { |
| hotkey_read_nvram(&s[si], poll_mask); |
| if (likely(si != so)) { |
| hotkey_compare_and_issue_event(&s[so], &s[si], |
| event_mask); |
| } |
| } |
| |
| so = si; |
| si ^= 1; |
| } |
| |
| exit: |
| return 0; |
| } |
| |
| /* call with hotkey_mutex held */ |
| static void hotkey_poll_stop_sync(void) |
| { |
| if (tpacpi_hotkey_task) { |
| kthread_stop(tpacpi_hotkey_task); |
| tpacpi_hotkey_task = NULL; |
| } |
| } |
| |
| /* call with hotkey_mutex held */ |
| static void hotkey_poll_setup(const bool may_warn) |
| { |
| const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; |
| const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; |
| |
| if (hotkey_poll_freq > 0 && |
| (poll_driver_mask || |
| (poll_user_mask && tpacpi_inputdev->users > 0))) { |
| if (!tpacpi_hotkey_task) { |
| tpacpi_hotkey_task = kthread_run(hotkey_kthread, |
| NULL, TPACPI_NVRAM_KTHREAD_NAME); |
| if (IS_ERR(tpacpi_hotkey_task)) { |
| tpacpi_hotkey_task = NULL; |
| pr_err("could not create kernel thread " |
| "for hotkey polling\n"); |
| } |
| } |
| } else { |
| hotkey_poll_stop_sync(); |
| if (may_warn && (poll_driver_mask || poll_user_mask) && |
| hotkey_poll_freq == 0) { |
| pr_notice("hot keys 0x%08x and/or events 0x%08x " |
| "require polling, which is currently " |
| "disabled\n", |
| poll_user_mask, poll_driver_mask); |
| } |
| } |
| } |
| |
| static void hotkey_poll_setup_safe(const bool may_warn) |
| { |
| mutex_lock(&hotkey_mutex); |
| hotkey_poll_setup(may_warn); |
| mutex_unlock(&hotkey_mutex); |
| } |
| |
| /* call with hotkey_mutex held */ |
| static void hotkey_poll_set_freq(unsigned int freq) |
| { |
| if (!freq) |
| hotkey_poll_stop_sync(); |
| |
| hotkey_poll_freq = freq; |
| } |
| |
| #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| |
| static void hotkey_poll_setup(const bool __unused) |
| { |
| } |
| |
| static void hotkey_poll_setup_safe(const bool __unused) |
| { |
| } |
| |
| #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| |
| static int hotkey_inputdev_open(struct input_dev *dev) |
| { |
| switch (tpacpi_lifecycle) { |
| case TPACPI_LIFE_INIT: |
| case TPACPI_LIFE_RUNNING: |
| hotkey_poll_setup_safe(false); |
| return 0; |
| case TPACPI_LIFE_EXITING: |
| return -EBUSY; |
| } |
| |
| /* Should only happen if tpacpi_lifecycle is corrupt */ |
| BUG(); |
| return -EBUSY; |
| } |
| |
| static void hotkey_inputdev_close(struct input_dev *dev) |
| { |
| /* disable hotkey polling when possible */ |
| if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && |
| !(hotkey_source_mask & hotkey_driver_mask)) |
| hotkey_poll_setup_safe(false); |
| } |
| |
| /* sysfs hotkey enable ------------------------------------------------- */ |
| static ssize_t hotkey_enable_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res, status; |
| |
| printk_deprecated_attribute("hotkey_enable", |
| "Hotkey reporting is always enabled"); |
| |
| res = hotkey_status_get(&status); |
| if (res) |
| return res; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", status); |
| } |
| |
| static ssize_t hotkey_enable_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| |
| printk_deprecated_attribute("hotkey_enable", |
| "Hotkeys can be disabled through hotkey_mask"); |
| |
| if (parse_strtoul(buf, 1, &t)) |
| return -EINVAL; |
| |
| if (t == 0) |
| return -EPERM; |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR_RW(hotkey_enable); |
| |
| /* sysfs hotkey mask --------------------------------------------------- */ |
| static ssize_t hotkey_mask_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask); |
| } |
| |
| static ssize_t hotkey_mask_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| int res; |
| |
| if (parse_strtoul(buf, 0xffffffffUL, &t)) |
| return -EINVAL; |
| |
| if (mutex_lock_killable(&hotkey_mutex)) |
| return -ERESTARTSYS; |
| |
| res = hotkey_user_mask_set(t); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| hotkey_poll_setup(true); |
| #endif |
| |
| mutex_unlock(&hotkey_mutex); |
| |
| tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); |
| |
| return (res) ? res : count; |
| } |
| |
| static DEVICE_ATTR_RW(hotkey_mask); |
| |
| /* sysfs hotkey bios_enabled ------------------------------------------- */ |
| static ssize_t hotkey_bios_enabled_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return sprintf(buf, "0\n"); |
| } |
| |
| static DEVICE_ATTR_RO(hotkey_bios_enabled); |
| |
| /* sysfs hotkey bios_mask ---------------------------------------------- */ |
| static ssize_t hotkey_bios_mask_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| printk_deprecated_attribute("hotkey_bios_mask", |
| "This attribute is useless."); |
| return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); |
| } |
| |
| static DEVICE_ATTR_RO(hotkey_bios_mask); |
| |
| /* sysfs hotkey all_mask ----------------------------------------------- */ |
| static ssize_t hotkey_all_mask_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "0x%08x\n", |
| hotkey_all_mask | hotkey_source_mask); |
| } |
| |
| static DEVICE_ATTR_RO(hotkey_all_mask); |
| |
| /* sysfs hotkey recommended_mask --------------------------------------- */ |
| static ssize_t hotkey_recommended_mask_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "0x%08x\n", |
| (hotkey_all_mask | hotkey_source_mask) |
| & ~hotkey_reserved_mask); |
| } |
| |
| static DEVICE_ATTR_RO(hotkey_recommended_mask); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| |
| /* sysfs hotkey hotkey_source_mask ------------------------------------- */ |
| static ssize_t hotkey_source_mask_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); |
| } |
| |
| static ssize_t hotkey_source_mask_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| u32 r_ev; |
| int rc; |
| |
| if (parse_strtoul(buf, 0xffffffffUL, &t) || |
| ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) |
| return -EINVAL; |
| |
| if (mutex_lock_killable(&hotkey_mutex)) |
| return -ERESTARTSYS; |
| |
| HOTKEY_CONFIG_CRITICAL_START |
| hotkey_source_mask = t; |
| HOTKEY_CONFIG_CRITICAL_END |
| |
| rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & |
| ~hotkey_source_mask); |
| hotkey_poll_setup(true); |
| |
| /* check if events needed by the driver got disabled */ |
| r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) |
| & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; |
| |
| mutex_unlock(&hotkey_mutex); |
| |
| if (rc < 0) |
| pr_err("hotkey_source_mask: " |
| "failed to update the firmware event mask!\n"); |
| |
| if (r_ev) |
| pr_notice("hotkey_source_mask: " |
| "some important events were disabled: 0x%04x\n", |
| r_ev); |
| |
| tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); |
| |
| return (rc < 0) ? rc : count; |
| } |
| |
| static DEVICE_ATTR_RW(hotkey_source_mask); |
| |
| /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ |
| static ssize_t hotkey_poll_freq_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); |
| } |
| |
| static ssize_t hotkey_poll_freq_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| |
| if (parse_strtoul(buf, 25, &t)) |
| return -EINVAL; |
| |
| if (mutex_lock_killable(&hotkey_mutex)) |
| return -ERESTARTSYS; |
| |
| hotkey_poll_set_freq(t); |
| hotkey_poll_setup(true); |
| |
| mutex_unlock(&hotkey_mutex); |
| |
| tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR_RW(hotkey_poll_freq); |
| |
| #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| |
| /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ |
| static ssize_t hotkey_radio_sw_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res; |
| res = hotkey_get_wlsw(); |
| if (res < 0) |
| return res; |
| |
| /* Opportunistic update */ |
| tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", |
| (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); |
| } |
| |
| static DEVICE_ATTR_RO(hotkey_radio_sw); |
| |
| static void hotkey_radio_sw_notify_change(void) |
| { |
| if (tp_features.hotkey_wlsw) |
| sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, |
| "hotkey_radio_sw"); |
| } |
| |
| /* sysfs hotkey tablet mode (pollable) --------------------------------- */ |
| static ssize_t hotkey_tablet_mode_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res, s; |
| res = hotkey_get_tablet_mode(&s); |
| if (res < 0) |
| return res; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", !!s); |
| } |
| |
| static DEVICE_ATTR_RO(hotkey_tablet_mode); |
| |
| static void hotkey_tablet_mode_notify_change(void) |
| { |
| if (tp_features.hotkey_tablet) |
| sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, |
| "hotkey_tablet_mode"); |
| } |
| |
| /* sysfs wakeup reason (pollable) -------------------------------------- */ |
| static ssize_t hotkey_wakeup_reason_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); |
| } |
| |
| static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); |
| |
| static void hotkey_wakeup_reason_notify_change(void) |
| { |
| sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, |
| "wakeup_reason"); |
| } |
| |
| /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ |
| static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); |
| } |
| |
| static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, |
| hotkey_wakeup_hotunplug_complete_show, NULL); |
| |
| static void hotkey_wakeup_hotunplug_complete_notify_change(void) |
| { |
| sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, |
| "wakeup_hotunplug_complete"); |
| } |
| |
| /* sysfs adaptive kbd mode --------------------------------------------- */ |
| |
| static int adaptive_keyboard_get_mode(void); |
| static int adaptive_keyboard_set_mode(int new_mode); |
| |
| enum ADAPTIVE_KEY_MODE { |
| HOME_MODE, |
| WEB_BROWSER_MODE, |
| WEB_CONFERENCE_MODE, |
| FUNCTION_MODE, |
| LAYFLAT_MODE |
| }; |
| |
| static ssize_t adaptive_kbd_mode_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int current_mode; |
| |
| current_mode = adaptive_keyboard_get_mode(); |
| if (current_mode < 0) |
| return current_mode; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", current_mode); |
| } |
| |
| static ssize_t adaptive_kbd_mode_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| int res; |
| |
| if (parse_strtoul(buf, LAYFLAT_MODE, &t)) |
| return -EINVAL; |
| |
| res = adaptive_keyboard_set_mode(t); |
| return (res < 0) ? res : count; |
| } |
| |
| static DEVICE_ATTR_RW(adaptive_kbd_mode); |
| |
| static struct attribute *adaptive_kbd_attributes[] = { |
| &dev_attr_adaptive_kbd_mode.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group adaptive_kbd_attr_group = { |
| .attrs = adaptive_kbd_attributes, |
| }; |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static struct attribute *hotkey_attributes[] __initdata = { |
| &dev_attr_hotkey_enable.attr, |
| &dev_attr_hotkey_bios_enabled.attr, |
| &dev_attr_hotkey_bios_mask.attr, |
| &dev_attr_wakeup_reason.attr, |
| &dev_attr_wakeup_hotunplug_complete.attr, |
| &dev_attr_hotkey_mask.attr, |
| &dev_attr_hotkey_all_mask.attr, |
| &dev_attr_hotkey_recommended_mask.attr, |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| &dev_attr_hotkey_source_mask.attr, |
| &dev_attr_hotkey_poll_freq.attr, |
| #endif |
| }; |
| |
| /* |
| * Sync both the hw and sw blocking state of all switches |
| */ |
| static void tpacpi_send_radiosw_update(void) |
| { |
| int wlsw; |
| |
| /* |
| * We must sync all rfkill controllers *before* issuing any |
| * rfkill input events, or we will race the rfkill core input |
| * handler. |
| * |
| * tpacpi_inputdev_send_mutex works as a synchronization point |
| * for the above. |
| * |
| * We optimize to avoid numerous calls to hotkey_get_wlsw. |
| */ |
| |
| wlsw = hotkey_get_wlsw(); |
| |
| /* Sync hw blocking state first if it is hw-blocked */ |
| if (wlsw == TPACPI_RFK_RADIO_OFF) |
| tpacpi_rfk_update_hwblock_state(true); |
| |
| /* Sync sw blocking state */ |
| tpacpi_rfk_update_swstate_all(); |
| |
| /* Sync hw blocking state last if it is hw-unblocked */ |
| if (wlsw == TPACPI_RFK_RADIO_ON) |
| tpacpi_rfk_update_hwblock_state(false); |
| |
| /* Issue rfkill input event for WLSW switch */ |
| if (!(wlsw < 0)) { |
| mutex_lock(&tpacpi_inputdev_send_mutex); |
| |
| input_report_switch(tpacpi_inputdev, |
| SW_RFKILL_ALL, (wlsw > 0)); |
| input_sync(tpacpi_inputdev); |
| |
| mutex_unlock(&tpacpi_inputdev_send_mutex); |
| } |
| |
| /* |
| * this can be unconditional, as we will poll state again |
| * if userspace uses the notify to read data |
| */ |
| hotkey_radio_sw_notify_change(); |
| } |
| |
| static void hotkey_exit(void) |
| { |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| mutex_lock(&hotkey_mutex); |
| hotkey_poll_stop_sync(); |
| mutex_unlock(&hotkey_mutex); |
| #endif |
| |
| if (hotkey_dev_attributes) |
| delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); |
| |
| dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, |
| "restoring original HKEY status and mask\n"); |
| /* yes, there is a bitwise or below, we want the |
| * functions to be called even if one of them fail */ |
| if (((tp_features.hotkey_mask && |
| hotkey_mask_set(hotkey_orig_mask)) | |
| hotkey_status_set(false)) != 0) |
| pr_err("failed to restore hot key mask " |
| "to BIOS defaults\n"); |
| } |
| |
| static void __init hotkey_unmap(const unsigned int scancode) |
| { |
| if (hotkey_keycode_map[scancode] != KEY_RESERVED) { |
| clear_bit(hotkey_keycode_map[scancode], |
| tpacpi_inputdev->keybit); |
| hotkey_keycode_map[scancode] = KEY_RESERVED; |
| } |
| } |
| |
| /* |
| * HKEY quirks: |
| * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 |
| */ |
| |
| #define TPACPI_HK_Q_INIMASK 0x0001 |
| |
| static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { |
| TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ |
| TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ |
| TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ |
| TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ |
| TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ |
| TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ |
| TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ |
| TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ |
| TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ |
| TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ |
| TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ |
| TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ |
| TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ |
| TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ |
| TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ |
| TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ |
| TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ |
| TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ |
| TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ |
| }; |
| |
| typedef u16 tpacpi_keymap_entry_t; |
| typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; |
| |
| static int __init hotkey_init(struct ibm_init_struct *iibm) |
| { |
| /* Requirements for changing the default keymaps: |
| * |
| * 1. Many of the keys are mapped to KEY_RESERVED for very |
| * good reasons. Do not change them unless you have deep |
| * knowledge on the IBM and Lenovo ThinkPad firmware for |
| * the various ThinkPad models. The driver behaves |
| * differently for KEY_RESERVED: such keys have their |
| * hot key mask *unset* in mask_recommended, and also |
| * in the initial hot key mask programmed into the |
| * firmware at driver load time, which means the firm- |
| * ware may react very differently if you change them to |
| * something else; |
| * |
| * 2. You must be subscribed to the linux-thinkpad and |
| * ibm-acpi-devel mailing lists, and you should read the |
| * list archives since 2007 if you want to change the |
| * keymaps. This requirement exists so that you will |
| * know the past history of problems with the thinkpad- |
| * acpi driver keymaps, and also that you will be |
| * listening to any bug reports; |
| * |
| * 3. Do not send thinkpad-acpi specific patches directly to |
| * for merging, *ever*. Send them to the linux-acpi |
| * mailinglist for comments. Merging is to be done only |
| * through acpi-test and the ACPI maintainer. |
| * |
| * If the above is too much to ask, don't change the keymap. |
| * Ask the thinkpad-acpi maintainer to do it, instead. |
| */ |
| |
| enum keymap_index { |
| TPACPI_KEYMAP_IBM_GENERIC = 0, |
| TPACPI_KEYMAP_LENOVO_GENERIC, |
| }; |
| |
| static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { |
| /* Generic keymap for IBM ThinkPads */ |
| [TPACPI_KEYMAP_IBM_GENERIC] = { |
| /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ |
| KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, |
| KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, |
| KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, |
| |
| /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ |
| KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ |
| KEY_UNKNOWN, /* 0x0D: FN+INSERT */ |
| KEY_UNKNOWN, /* 0x0E: FN+DELETE */ |
| |
| /* brightness: firmware always reacts to them */ |
| KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ |
| KEY_RESERVED, /* 0x10: FN+END (brightness down) */ |
| |
| /* Thinklight: firmware always react to it */ |
| KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ |
| |
| KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ |
| KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ |
| |
| /* Volume: firmware always react to it and reprograms |
| * the built-in *extra* mixer. Never map it to control |
| * another mixer by default. */ |
| KEY_RESERVED, /* 0x14: VOLUME UP */ |
| KEY_RESERVED, /* 0x15: VOLUME DOWN */ |
| KEY_RESERVED, /* 0x16: MUTE */ |
| |
| KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ |
| |
| /* (assignments unknown, please report if found) */ |
| KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| |
| /* No assignments, only used for Adaptive keyboards. */ |
| KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| }, |
| |
| /* Generic keymap for Lenovo ThinkPads */ |
| [TPACPI_KEYMAP_LENOVO_GENERIC] = { |
| /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ |
| KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, |
| KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, |
| KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, |
| |
| /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ |
| KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ |
| KEY_UNKNOWN, /* 0x0D: FN+INSERT */ |
| KEY_UNKNOWN, /* 0x0E: FN+DELETE */ |
| |
| /* These should be enabled --only-- when ACPI video |
| * is disabled (i.e. in "vendor" mode), and are handled |
| * in a special way by the init code */ |
| KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ |
| KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ |
| |
| KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ |
| |
| KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ |
| KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ |
| |
| /* Volume: z60/z61, T60 (BIOS version?): firmware always |
| * react to it and reprograms the built-in *extra* mixer. |
| * Never map it to control another mixer by default. |
| * |
| * T60?, T61, R60?, R61: firmware and EC tries to send |
| * these over the regular keyboard, so these are no-ops, |
| * but there are still weird bugs re. MUTE, so do not |
| * change unless you get test reports from all Lenovo |
| * models. May cause the BIOS to interfere with the |
| * HDA mixer. |
| */ |
| KEY_RESERVED, /* 0x14: VOLUME UP */ |
| KEY_RESERVED, /* 0x15: VOLUME DOWN */ |
| KEY_RESERVED, /* 0x16: MUTE */ |
| |
| KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ |
| |
| /* (assignments unknown, please report if found) */ |
| KEY_UNKNOWN, KEY_UNKNOWN, |
| |
| /* |
| * The mic mute button only sends 0x1a. It does not |
| * automatically mute the mic or change the mute light. |
| */ |
| KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ |
| |
| /* (assignments unknown, please report if found) */ |
| KEY_UNKNOWN, |
| |
| /* Extra keys in use since the X240 / T440 / T540 */ |
| KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, |
| |
| /* |
| * These are the adaptive keyboard keycodes for Carbon X1 2014. |
| * The first item in this list is the Mute button which is |
| * emitted with 0x103 through |
| * adaptive_keyboard_hotkey_notify_hotkey() when the sound |
| * symbol is held. |
| * We'll need to offset those by 0x20. |
| */ |
| KEY_RESERVED, /* Mute held, 0x103 */ |
| KEY_BRIGHTNESS_MIN, /* Backlight off */ |
| KEY_RESERVED, /* Clipping tool */ |
| KEY_RESERVED, /* Cloud */ |
| KEY_RESERVED, |
| KEY_VOICECOMMAND, /* Voice */ |
| KEY_RESERVED, |
| KEY_RESERVED, /* Gestures */ |
| KEY_RESERVED, |
| KEY_RESERVED, |
| KEY_RESERVED, |
| KEY_CONFIG, /* Settings */ |
| KEY_RESERVED, /* New tab */ |
| KEY_REFRESH, /* Reload */ |
| KEY_BACK, /* Back */ |
| KEY_RESERVED, /* Microphone down */ |
| KEY_RESERVED, /* Microphone up */ |
| KEY_RESERVED, /* Microphone cancellation */ |
| KEY_RESERVED, /* Camera mode */ |
| KEY_RESERVED, /* Rotate display, 0x116 */ |
| }, |
| }; |
| |
| static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { |
| /* Generic maps (fallback) */ |
| { |
| .vendor = PCI_VENDOR_ID_IBM, |
| .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, |
| .quirks = TPACPI_KEYMAP_IBM_GENERIC, |
| }, |
| { |
| .vendor = PCI_VENDOR_ID_LENOVO, |
| .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, |
| .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, |
| }, |
| }; |
| |
| #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) |
| #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) |
| |
| int res, i; |
| int status; |
| int hkeyv; |
| bool radiosw_state = false; |
| bool tabletsw_state = false; |
| |
| unsigned long quirks; |
| unsigned long keymap_id; |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
| "initializing hotkey subdriver\n"); |
| |
| BUG_ON(!tpacpi_inputdev); |
| BUG_ON(tpacpi_inputdev->open != NULL || |
| tpacpi_inputdev->close != NULL); |
| |
| TPACPI_ACPIHANDLE_INIT(hkey); |
| mutex_init(&hotkey_mutex); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| mutex_init(&hotkey_thread_data_mutex); |
| #endif |
| |
| /* hotkey not supported on 570 */ |
| tp_features.hotkey = hkey_handle != NULL; |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
| "hotkeys are %s\n", |
| str_supported(tp_features.hotkey)); |
| |
| if (!tp_features.hotkey) |
| return 1; |
| |
| /* |
| * Check if we have an adaptive keyboard, like on the |
| * Lenovo Carbon X1 2014 (2nd Gen). |
| */ |
| if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { |
| if ((hkeyv >> 8) == 2) { |
| tp_features.has_adaptive_kbd = true; |
| res = sysfs_create_group(&tpacpi_pdev->dev.kobj, |
| &adaptive_kbd_attr_group); |
| if (res) |
| goto err_exit; |
| } |
| } |
| |
| quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, |
| ARRAY_SIZE(tpacpi_hotkey_qtable)); |
| |
| tpacpi_disable_brightness_delay(); |
| |
| /* MUST have enough space for all attributes to be added to |
| * hotkey_dev_attributes */ |
| hotkey_dev_attributes = create_attr_set( |
| ARRAY_SIZE(hotkey_attributes) + 2, |
| NULL); |
| if (!hotkey_dev_attributes) |
| return -ENOMEM; |
| res = add_many_to_attr_set(hotkey_dev_attributes, |
| hotkey_attributes, |
| ARRAY_SIZE(hotkey_attributes)); |
| if (res) |
| goto err_exit; |
| |
| /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, |
| A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking |
| for HKEY interface version 0x100 */ |
| if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { |
| if ((hkeyv >> 8) != 1) { |
| pr_err("unknown version of the HKEY interface: 0x%x\n", |
| hkeyv); |
| pr_err("please report this to %s\n", TPACPI_MAIL); |
| } else { |
| /* |
| * MHKV 0x100 in A31, R40, R40e, |
| * T4x, X31, and later |
| */ |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
| "firmware HKEY interface version: 0x%x\n", |
| hkeyv); |
| |
| /* Paranoia check AND init hotkey_all_mask */ |
| if (!acpi_evalf(hkey_handle, &hotkey_all_mask, |
| "MHKA", "qd")) { |
| pr_err("missing MHKA handler, " |
| "please report this to %s\n", |
| TPACPI_MAIL); |
| /* Fallback: pre-init for FN+F3,F4,F12 */ |
| hotkey_all_mask = 0x080cU; |
| } else { |
| tp_features.hotkey_mask = 1; |
| } |
| } |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
| "hotkey masks are %s\n", |
| str_supported(tp_features.hotkey_mask)); |
| |
| /* Init hotkey_all_mask if not initialized yet */ |
| if (!tp_features.hotkey_mask && !hotkey_all_mask && |
| (quirks & TPACPI_HK_Q_INIMASK)) |
| hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ |
| |
| /* Init hotkey_acpi_mask and hotkey_orig_mask */ |
| if (tp_features.hotkey_mask) { |
| /* hotkey_source_mask *must* be zero for |
| * the first hotkey_mask_get to return hotkey_orig_mask */ |
| res = hotkey_mask_get(); |
| if (res) |
| goto err_exit; |
| |
| hotkey_orig_mask = hotkey_acpi_mask; |
| } else { |
| hotkey_orig_mask = hotkey_all_mask; |
| hotkey_acpi_mask = hotkey_all_mask; |
| } |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| if (dbg_wlswemul) { |
| tp_features.hotkey_wlsw = 1; |
| radiosw_state = !!tpacpi_wlsw_emulstate; |
| pr_info("radio switch emulation enabled\n"); |
| } else |
| #endif |
| /* Not all thinkpads have a hardware radio switch */ |
| if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { |
| tp_features.hotkey_wlsw = 1; |
| radiosw_state = !!status; |
| pr_info("radio switch found; radios are %s\n", |
| enabled(status, 0)); |
| } |
| if (tp_features.hotkey_wlsw) |
| res = add_to_attr_set(hotkey_dev_attributes, |
| &dev_attr_hotkey_radio_sw.attr); |
| |
| /* For X41t, X60t, X61t Tablets... */ |
| if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) { |
| tp_features.hotkey_tablet = 1; |
| tabletsw_state = !!(status & TP_HOTKEY_TABLET_MASK); |
| pr_info("possible tablet mode switch found; " |
| "ThinkPad in %s mode\n", |
| (tabletsw_state) ? "tablet" : "laptop"); |
| res = add_to_attr_set(hotkey_dev_attributes, |
| &dev_attr_hotkey_tablet_mode.attr); |
| } |
| |
| if (!res) |
| res = register_attr_set_with_sysfs( |
| hotkey_dev_attributes, |
| &tpacpi_pdev->dev.kobj); |
| if (res) |
| goto err_exit; |
| |
| /* Set up key map */ |
| hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, |
| GFP_KERNEL); |
| if (!hotkey_keycode_map) { |
| pr_err("failed to allocate memory for key map\n"); |
| res = -ENOMEM; |
| goto err_exit; |
| } |
| |
| keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, |
| ARRAY_SIZE(tpacpi_keymap_qtable)); |
| BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); |
| dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
| "using keymap number %lu\n", keymap_id); |
| |
| memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id], |
| TPACPI_HOTKEY_MAP_SIZE); |
| |
| input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); |
| tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; |
| tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; |
| tpacpi_inputdev->keycode = hotkey_keycode_map; |
| for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { |
| if (hotkey_keycode_map[i] != KEY_RESERVED) { |
| input_set_capability(tpacpi_inputdev, EV_KEY, |
| hotkey_keycode_map[i]); |
| } else { |
| if (i < sizeof(hotkey_reserved_mask)*8) |
| hotkey_reserved_mask |= 1 << i; |
| } |
| } |
| |
| if (tp_features.hotkey_wlsw) { |
| input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); |
| input_report_switch(tpacpi_inputdev, |
| SW_RFKILL_ALL, radiosw_state); |
| } |
| if (tp_features.hotkey_tablet) { |
| input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); |
| input_report_switch(tpacpi_inputdev, |
| SW_TABLET_MODE, tabletsw_state); |
| } |
| |
| /* Do not issue duplicate brightness change events to |
| * userspace. tpacpi_detect_brightness_capabilities() must have |
| * been called before this point */ |
| if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { |
| pr_info("This ThinkPad has standard ACPI backlight " |
| "brightness control, supported by the ACPI " |
| "video driver\n"); |
| pr_notice("Disabling thinkpad-acpi brightness events " |
| "by default...\n"); |
| |
| /* Disable brightness up/down on Lenovo thinkpads when |
| * ACPI is handling them, otherwise it is plain impossible |
| * for userspace to do something even remotely sane */ |
| hotkey_reserved_mask |= |
| (1 << TP_ACPI_HOTKEYSCAN_FNHOME) |
| | (1 << TP_ACPI_HOTKEYSCAN_FNEND); |
| hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); |
| hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); |
| } |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK |
| & ~hotkey_all_mask |
| & ~hotkey_reserved_mask; |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
| "hotkey source mask 0x%08x, polling freq %u\n", |
| hotkey_source_mask, hotkey_poll_freq); |
| #endif |
| |
| dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
| "enabling firmware HKEY event interface...\n"); |
| res = hotkey_status_set(true); |
| if (res) { |
| hotkey_exit(); |
| return res; |
| } |
| res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) |
| | hotkey_driver_mask) |
| & ~hotkey_source_mask); |
| if (res < 0 && res != -ENXIO) { |
| hotkey_exit(); |
| return res; |
| } |
| hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) |
| & ~hotkey_reserved_mask; |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, |
| "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", |
| hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); |
| |
| tpacpi_inputdev->open = &hotkey_inputdev_open; |
| tpacpi_inputdev->close = &hotkey_inputdev_close; |
| |
| hotkey_poll_setup_safe(true); |
| |
| return 0; |
| |
| err_exit: |
| delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); |
| sysfs_remove_group(&tpacpi_pdev->dev.kobj, |
| &adaptive_kbd_attr_group); |
| |
| hotkey_dev_attributes = NULL; |
| |
| return (res < 0) ? res : 1; |
| } |
| |
| /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser |
| * mode, Web conference mode, Function mode and Lay-flat mode. |
| * We support Home mode and Function mode currently. |
| * |
| * Will consider support rest of modes in future. |
| * |
| */ |
| static const int adaptive_keyboard_modes[] = { |
| HOME_MODE, |
| /* WEB_BROWSER_MODE = 2, |
| WEB_CONFERENCE_MODE = 3, */ |
| FUNCTION_MODE |
| }; |
| |
| #define DFR_CHANGE_ROW 0x101 |
| #define DFR_SHOW_QUICKVIEW_ROW 0x102 |
| #define FIRST_ADAPTIVE_KEY 0x103 |
| #define ADAPTIVE_KEY_OFFSET 0x020 |
| |
| /* press Fn key a while second, it will switch to Function Mode. Then |
| * release Fn key, previous mode be restored. |
| */ |
| static bool adaptive_keyboard_mode_is_saved; |
| static int adaptive_keyboard_prev_mode; |
| |
| static int adaptive_keyboard_get_mode(void) |
| { |
| int mode = 0; |
| |
| if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { |
| pr_err("Cannot read adaptive keyboard mode\n"); |
| return -EIO; |
| } |
| |
| return mode; |
| } |
| |
| static int adaptive_keyboard_set_mode(int new_mode) |
| { |
| if (new_mode < 0 || |
| new_mode > LAYFLAT_MODE) |
| return -EINVAL; |
| |
| if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { |
| pr_err("Cannot set adaptive keyboard mode\n"); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static int adaptive_keyboard_get_next_mode(int mode) |
| { |
| size_t i; |
| size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; |
| |
| for (i = 0; i <= max_mode; i++) { |
| if (adaptive_keyboard_modes[i] == mode) |
| break; |
| } |
| |
| if (i >= max_mode) |
| i = 0; |
| else |
| i++; |
| |
| return adaptive_keyboard_modes[i]; |
| } |
| |
| static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) |
| { |
| int current_mode = 0; |
| int new_mode = 0; |
| int keycode; |
| |
| switch (scancode) { |
| case DFR_CHANGE_ROW: |
| if (adaptive_keyboard_mode_is_saved) { |
| new_mode = adaptive_keyboard_prev_mode; |
| adaptive_keyboard_mode_is_saved = false; |
| } else { |
| current_mode = adaptive_keyboard_get_mode(); |
| if (current_mode < 0) |
| return false; |
| new_mode = adaptive_keyboard_get_next_mode( |
| current_mode); |
| } |
| |
| if (adaptive_keyboard_set_mode(new_mode) < 0) |
| return false; |
| |
| return true; |
| |
| case DFR_SHOW_QUICKVIEW_ROW: |
| current_mode = adaptive_keyboard_get_mode(); |
| if (current_mode < 0) |
| return false; |
| |
| adaptive_keyboard_prev_mode = current_mode; |
| adaptive_keyboard_mode_is_saved = true; |
| |
| if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) |
| return false; |
| return true; |
| |
| default: |
| if (scancode < FIRST_ADAPTIVE_KEY || |
| scancode >= FIRST_ADAPTIVE_KEY + TPACPI_HOTKEY_MAP_LEN - |
| ADAPTIVE_KEY_OFFSET) { |
| pr_info("Unhandled adaptive keyboard key: 0x%x\n", |
| scancode); |
| return false; |
| } |
| keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + ADAPTIVE_KEY_OFFSET]; |
| if (keycode != KEY_RESERVED) { |
| mutex_lock(&tpacpi_inputdev_send_mutex); |
| |
| input_report_key(tpacpi_inputdev, keycode, 1); |
| input_sync(tpacpi_inputdev); |
| |
| input_report_key(tpacpi_inputdev, keycode, 0); |
| input_sync(tpacpi_inputdev); |
| |
| mutex_unlock(&tpacpi_inputdev_send_mutex); |
| } |
| return true; |
| } |
| } |
| |
| static bool hotkey_notify_hotkey(const u32 hkey, |
| bool *send_acpi_ev, |
| bool *ignore_acpi_ev) |
| { |
| /* 0x1000-0x1FFF: key presses */ |
| unsigned int scancode = hkey & 0xfff; |
| *send_acpi_ev = true; |
| *ignore_acpi_ev = false; |
| |
| /* HKEY event 0x1001 is scancode 0x00 */ |
| if (scancode > 0 && scancode <= TPACPI_HOTKEY_MAP_LEN) { |
| scancode--; |
| if (!(hotkey_source_mask & (1 << scancode))) { |
| tpacpi_input_send_key_masked(scancode); |
| *send_acpi_ev = false; |
| } else { |
| *ignore_acpi_ev = true; |
| } |
| return true; |
| } else { |
| return adaptive_keyboard_hotkey_notify_hotkey(scancode); |
| } |
| return false; |
| } |
| |
| static bool hotkey_notify_wakeup(const u32 hkey, |
| bool *send_acpi_ev, |
| bool *ignore_acpi_ev) |
| { |
| /* 0x2000-0x2FFF: Wakeup reason */ |
| *send_acpi_ev = true; |
| *ignore_acpi_ev = false; |
| |
| switch (hkey) { |
| case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ |
| case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ |
| hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; |
| *ignore_acpi_ev = true; |
| break; |
| |
| case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ |
| case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ |
| hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; |
| *ignore_acpi_ev = true; |
| break; |
| |
| case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ |
| case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ |
| pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); |
| /* how to auto-heal: */ |
| /* 2313: woke up from S3, go to S4/S5 */ |
| /* 2413: woke up from S4, go to S5 */ |
| break; |
| |
| default: |
| return false; |
| } |
| |
| if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { |
| pr_info("woke up due to a hot-unplug request...\n"); |
| hotkey_wakeup_reason_notify_change(); |
| } |
| return true; |
| } |
| |
| static bool hotkey_notify_dockevent(const u32 hkey, |
| bool *send_acpi_ev, |
| bool *ignore_acpi_ev) |
| { |
| /* 0x4000-0x4FFF: dock-related events */ |
| *send_acpi_ev = true; |
| *ignore_acpi_ev = false; |
| |
| switch (hkey) { |
| case TP_HKEY_EV_UNDOCK_ACK: |
| /* ACPI undock operation completed after wakeup */ |
| hotkey_autosleep_ack = 1; |
| pr_info("undocked\n"); |
| hotkey_wakeup_hotunplug_complete_notify_change(); |
| return true; |
| |
| case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ |
| pr_info("docked into hotplug port replicator\n"); |
| return true; |
| case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ |
| pr_info("undocked from hotplug port replicator\n"); |
| return true; |
| |
| default: |
| return false; |
| } |
| } |
| |
| static bool hotkey_notify_usrevent(const u32 hkey, |
| bool *send_acpi_ev, |
| bool *ignore_acpi_ev) |
| { |
| /* 0x5000-0x5FFF: human interface helpers */ |
| *send_acpi_ev = true; |
| *ignore_acpi_ev = false; |
| |
| switch (hkey) { |
| case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ |
| case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ |
| return true; |
| |
| case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ |
| case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ |
| tpacpi_input_send_tabletsw(); |
| hotkey_tablet_mode_notify_change(); |
| *send_acpi_ev = false; |
| return true; |
| |
| case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ |
| case TP_HKEY_EV_LID_OPEN: /* Lid opened */ |
| case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ |
| /* do not propagate these events */ |
| *ignore_acpi_ev = true; |
| return true; |
| |
| default: |
| return false; |
| } |
| } |
| |
| static void thermal_dump_all_sensors(void); |
| |
| static bool hotkey_notify_6xxx(const u32 hkey, |
| bool *send_acpi_ev, |
| bool *ignore_acpi_ev) |
| { |
| bool known = true; |
| |
| /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ |
| *send_acpi_ev = true; |
| *ignore_acpi_ev = false; |
| |
| switch (hkey) { |
| case TP_HKEY_EV_THM_TABLE_CHANGED: |
| pr_info("EC reports that Thermal Table has changed\n"); |
| /* recommended action: do nothing, we don't have |
| * Lenovo ATM information */ |
| return true; |
| case TP_HKEY_EV_ALARM_BAT_HOT: |
| pr_crit("THERMAL ALARM: battery is too hot!\n"); |
| /* recommended action: warn user through gui */ |
| break; |
| case TP_HKEY_EV_ALARM_BAT_XHOT: |
| pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); |
| /* recommended action: immediate sleep/hibernate */ |
| break; |
| case TP_HKEY_EV_ALARM_SENSOR_HOT: |
| pr_crit("THERMAL ALARM: " |
| "a sensor reports something is too hot!\n"); |
| /* recommended action: warn user through gui, that */ |
| /* some internal component is too hot */ |
| break; |
| case TP_HKEY_EV_ALARM_SENSOR_XHOT: |
| pr_alert("THERMAL EMERGENCY: " |
| "a sensor reports something is extremely hot!\n"); |
| /* recommended action: immediate sleep/hibernate */ |
| break; |
| case TP_HKEY_EV_AC_CHANGED: |
| /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: |
| * AC status changed; can be triggered by plugging or |
| * unplugging AC adapter, docking or undocking. */ |
| |
| /* fallthrough */ |
| |
| case TP_HKEY_EV_KEY_NUMLOCK: |
| case TP_HKEY_EV_KEY_FN: |
| case TP_HKEY_EV_KEY_FN_ESC: |
| /* key press events, we just ignore them as long as the EC |
| * is still reporting them in the normal keyboard stream */ |
| *send_acpi_ev = false; |
| *ignore_acpi_ev = true; |
| return true; |
| |
| default: |
| pr_warn("unknown possible thermal alarm or keyboard event received\n"); |
| known = false; |
| } |
| |
| thermal_dump_all_sensors(); |
| |
| return known; |
| } |
| |
| static void hotkey_notify(struct ibm_struct *ibm, u32 event) |
| { |
| u32 hkey; |
| bool send_acpi_ev; |
| bool ignore_acpi_ev; |
| bool known_ev; |
| |
| if (event != 0x80) { |
| pr_err("unknown HKEY notification event %d\n", event); |
| /* forward it to userspace, maybe it knows how to handle it */ |
| acpi_bus_generate_netlink_event( |
| ibm->acpi->device->pnp.device_class, |
| dev_name(&ibm->acpi->device->dev), |
| event, 0); |
| return; |
| } |
| |
| while (1) { |
| if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { |
| pr_err("failed to retrieve HKEY event\n"); |
| return; |
| } |
| |
| if (hkey == 0) { |
| /* queue empty */ |
| return; |
| } |
| |
| send_acpi_ev = true; |
| ignore_acpi_ev = false; |
| |
| switch (hkey >> 12) { |
| case 1: |
| /* 0x1000-0x1FFF: key presses */ |
| known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, |
| &ignore_acpi_ev); |
| break; |
| case 2: |
| /* 0x2000-0x2FFF: Wakeup reason */ |
| known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, |
| &ignore_acpi_ev); |
| break; |
| case 3: |
| /* 0x3000-0x3FFF: bay-related wakeups */ |
| switch (hkey) { |
| case TP_HKEY_EV_BAYEJ_ACK: |
| hotkey_autosleep_ack = 1; |
| pr_info("bay ejected\n"); |
| hotkey_wakeup_hotunplug_complete_notify_change(); |
| known_ev = true; |
| break; |
| case TP_HKEY_EV_OPTDRV_EJ: |
| /* FIXME: kick libata if SATA link offline */ |
| known_ev = true; |
| break; |
| default: |
| known_ev = false; |
| } |
| break; |
| case 4: |
| /* 0x4000-0x4FFF: dock-related events */ |
| known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, |
| &ignore_acpi_ev); |
| break; |
| case 5: |
| /* 0x5000-0x5FFF: human interface helpers */ |
| known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, |
| &ignore_acpi_ev); |
| break; |
| case 6: |
| /* 0x6000-0x6FFF: thermal alarms/notices and |
| * keyboard events */ |
| known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, |
| &ignore_acpi_ev); |
| break; |
| case 7: |
| /* 0x7000-0x7FFF: misc */ |
| if (tp_features.hotkey_wlsw && |
| hkey == TP_HKEY_EV_RFKILL_CHANGED) { |
| tpacpi_send_radiosw_update(); |
| send_acpi_ev = 0; |
| known_ev = true; |
| break; |
| } |
| /* fallthrough to default */ |
| default: |
| known_ev = false; |
| } |
| if (!known_ev) { |
| pr_notice("unhandled HKEY event 0x%04x\n", hkey); |
| pr_notice("please report the conditions when this " |
| "event happened to %s\n", TPACPI_MAIL); |
| } |
| |
| /* netlink events */ |
| if (!ignore_acpi_ev && send_acpi_ev) { |
| acpi_bus_generate_netlink_event( |
| ibm->acpi->device->pnp.device_class, |
| dev_name(&ibm->acpi->device->dev), |
| event, hkey); |
| } |
| } |
| } |
| |
| static void hotkey_suspend(void) |
| { |
| /* Do these on suspend, we get the events on early resume! */ |
| hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; |
| hotkey_autosleep_ack = 0; |
| |
| /* save previous mode of adaptive keyboard of X1 Carbon */ |
| if (tp_features.has_adaptive_kbd) { |
| if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, |
| "GTRW", "dd", 0)) { |
| pr_err("Cannot read adaptive keyboard mode.\n"); |
| } |
| } |
| } |
| |
| static void hotkey_resume(void) |
| { |
| tpacpi_disable_brightness_delay(); |
| |
| if (hotkey_status_set(true) < 0 || |
| hotkey_mask_set(hotkey_acpi_mask) < 0) |
| pr_err("error while attempting to reset the event " |
| "firmware interface\n"); |
| |
| tpacpi_send_radiosw_update(); |
| hotkey_tablet_mode_notify_change(); |
| hotkey_wakeup_reason_notify_change(); |
| hotkey_wakeup_hotunplug_complete_notify_change(); |
| hotkey_poll_setup_safe(false); |
| |
| /* restore previous mode of adapive keyboard of X1 Carbon */ |
| if (tp_features.has_adaptive_kbd) { |
| if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", |
| adaptive_keyboard_prev_mode)) { |
| pr_err("Cannot set adaptive keyboard mode.\n"); |
| } |
| } |
| } |
| |
| /* procfs -------------------------------------------------------------- */ |
| static int hotkey_read(struct seq_file *m) |
| { |
| int res, status; |
| |
| if (!tp_features.hotkey) { |
| seq_printf(m, "status:\t\tnot supported\n"); |
| return 0; |
| } |
| |
| if (mutex_lock_killable(&hotkey_mutex)) |
| return -ERESTARTSYS; |
| res = hotkey_status_get(&status); |
| if (!res) |
| res = hotkey_mask_get(); |
| mutex_unlock(&hotkey_mutex); |
| if (res) |
| return res; |
| |
| seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); |
| if (hotkey_all_mask) { |
| seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); |
| seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); |
| } else { |
| seq_printf(m, "mask:\t\tnot supported\n"); |
| seq_printf(m, "commands:\tenable, disable, reset\n"); |
| } |
| |
| return 0; |
| } |
| |
| static void hotkey_enabledisable_warn(bool enable) |
| { |
| tpacpi_log_usertask("procfs hotkey enable/disable"); |
| if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), |
| pr_fmt("hotkey enable/disable functionality has been " |
| "removed from the driver. " |
| "Hotkeys are always enabled.\n"))) |
| pr_err("Please remove the hotkey=enable module " |
| "parameter, it is deprecated. " |
| "Hotkeys are always enabled.\n"); |
| } |
| |
| static int hotkey_write(char *buf) |
| { |
| int res; |
| u32 mask; |
| char *cmd; |
| |
| if (!tp_features.hotkey) |
| return -ENODEV; |
| |
| if (mutex_lock_killable(&hotkey_mutex)) |
| return -ERESTARTSYS; |
| |
| mask = hotkey_user_mask; |
| |
| res = 0; |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "enable") == 0) { |
| hotkey_enabledisable_warn(1); |
| } else if (strlencmp(cmd, "disable") == 0) { |
| hotkey_enabledisable_warn(0); |
| res = -EPERM; |
| } else if (strlencmp(cmd, "reset") == 0) { |
| mask = (hotkey_all_mask | hotkey_source_mask) |
| & ~hotkey_reserved_mask; |
| } else if (sscanf(cmd, "0x%x", &mask) == 1) { |
| /* mask set */ |
| } else if (sscanf(cmd, "%x", &mask) == 1) { |
| /* mask set */ |
| } else { |
| res = -EINVAL; |
| goto errexit; |
| } |
| } |
| |
| if (!res) { |
| tpacpi_disclose_usertask("procfs hotkey", |
| "set mask to 0x%08x\n", mask); |
| res = hotkey_user_mask_set(mask); |
| } |
| |
| errexit: |
| mutex_unlock(&hotkey_mutex); |
| return res; |
| } |
| |
| static const struct acpi_device_id ibm_htk_device_ids[] = { |
| {TPACPI_ACPI_IBM_HKEY_HID, 0}, |
| {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, |
| {"", 0}, |
| }; |
| |
| static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { |
| .hid = ibm_htk_device_ids, |
| .notify = hotkey_notify, |
| .handle = &hkey_handle, |
| .type = ACPI_DEVICE_NOTIFY, |
| }; |
| |
| static struct ibm_struct hotkey_driver_data = { |
| .name = "hotkey", |
| .read = hotkey_read, |
| .write = hotkey_write, |
| .exit = hotkey_exit, |
| .resume = hotkey_resume, |
| .suspend = hotkey_suspend, |
| .acpi = &ibm_hotkey_acpidriver, |
| }; |
| |
| /************************************************************************* |
| * Bluetooth subdriver |
| */ |
| |
| enum { |
| /* ACPI GBDC/SBDC bits */ |
| TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ |
| TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ |
| TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: |
| 0 = disable, 1 = enable */ |
| }; |
| |
| enum { |
| /* ACPI \BLTH commands */ |
| TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ |
| TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ |
| TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ |
| TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ |
| TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ |
| }; |
| |
| #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" |
| |
| static int bluetooth_get_status(void) |
| { |
| int status; |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| if (dbg_bluetoothemul) |
| return (tpacpi_bluetooth_emulstate) ? |
| TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
| #endif |
| |
| if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) |
| return -EIO; |
| |
| return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? |
| TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
| } |
| |
| static int bluetooth_set_status(enum tpacpi_rfkill_state state) |
| { |
| int status; |
| |
| vdbg_printk(TPACPI_DBG_RFKILL, |
| "will attempt to %s bluetooth\n", |
| (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| if (dbg_bluetoothemul) { |
| tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); |
| return 0; |
| } |
| #endif |
| |
| if (state == TPACPI_RFK_RADIO_ON) |
| status = TP_ACPI_BLUETOOTH_RADIOSSW |
| | TP_ACPI_BLUETOOTH_RESUMECTRL; |
| else |
| status = 0; |
| |
| if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| /* sysfs bluetooth enable ---------------------------------------------- */ |
| static ssize_t bluetooth_enable_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, |
| attr, buf); |
| } |
| |
| static ssize_t bluetooth_enable_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, |
| attr, buf, count); |
| } |
| |
| static DEVICE_ATTR_RW(bluetooth_enable); |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static struct attribute *bluetooth_attributes[] = { |
| &dev_attr_bluetooth_enable.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group bluetooth_attr_group = { |
| .attrs = bluetooth_attributes, |
| }; |
| |
| static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { |
| .get_status = bluetooth_get_status, |
| .set_status = bluetooth_set_status, |
| }; |
| |
| static void bluetooth_shutdown(void) |
| { |
| /* Order firmware to save current state to NVRAM */ |
| if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", |
| TP_ACPI_BLTH_SAVE_STATE)) |
| pr_notice("failed to save bluetooth state to NVRAM\n"); |
| else |
| vdbg_printk(TPACPI_DBG_RFKILL, |
| "bluetooth state saved to NVRAM\n"); |
| } |
| |
| static void bluetooth_exit(void) |
| { |
| sysfs_remove_group(&tpacpi_pdev->dev.kobj, |
| &bluetooth_attr_group); |
| |
| tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); |
| |
| bluetooth_shutdown(); |
| } |
| |
| static int __init bluetooth_init(struct ibm_init_struct *iibm) |
| { |
| int res; |
| int status = 0; |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
| "initializing bluetooth subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(hkey); |
| |
| /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
| G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ |
| tp_features.bluetooth = hkey_handle && |
| acpi_evalf(hkey_handle, &status, "GBDC", "qd"); |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
| "bluetooth is %s, status 0x%02x\n", |
| str_supported(tp_features.bluetooth), |
| status); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| if (dbg_bluetoothemul) { |
| tp_features.bluetooth = 1; |
| pr_info("bluetooth switch emulation enabled\n"); |
| } else |
| #endif |
| if (tp_features.bluetooth && |
| !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { |
| /* no bluetooth hardware present in system */ |
| tp_features.bluetooth = 0; |
| dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
| "bluetooth hardware not installed\n"); |
| } |
| |
| if (!tp_features.bluetooth) |
| return 1; |
| |
| res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, |
| &bluetooth_tprfk_ops, |
| RFKILL_TYPE_BLUETOOTH, |
| TPACPI_RFK_BLUETOOTH_SW_NAME, |
| true); |
| if (res) |
| return res; |
| |
| res = sysfs_create_group(&tpacpi_pdev->dev.kobj, |
| &bluetooth_attr_group); |
| if (res) { |
| tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); |
| return res; |
| } |
| |
| return 0; |
| } |
| |
| /* procfs -------------------------------------------------------------- */ |
| static int bluetooth_read(struct seq_file *m) |
| { |
| return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); |
| } |
| |
| static int bluetooth_write(char *buf) |
| { |
| return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); |
| } |
| |
| static struct ibm_struct bluetooth_driver_data = { |
| .name = "bluetooth", |
| .read = bluetooth_read, |
| .write = bluetooth_write, |
| .exit = bluetooth_exit, |
| .shutdown = bluetooth_shutdown, |
| }; |
| |
| /************************************************************************* |
| * Wan subdriver |
| */ |
| |
| enum { |
| /* ACPI GWAN/SWAN bits */ |
| TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ |
| TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ |
| TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: |
| 0 = disable, 1 = enable */ |
| }; |
| |
| #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" |
| |
| static int wan_get_status(void) |
| { |
| int status; |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| if (dbg_wwanemul) |
| return (tpacpi_wwan_emulstate) ? |
| TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
| #endif |
| |
| if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) |
| return -EIO; |
| |
| return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? |
| TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
| } |
| |
| static int wan_set_status(enum tpacpi_rfkill_state state) |
| { |
| int status; |
| |
| vdbg_printk(TPACPI_DBG_RFKILL, |
| "will attempt to %s wwan\n", |
| (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| if (dbg_wwanemul) { |
| tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); |
| return 0; |
| } |
| #endif |
| |
| if (state == TPACPI_RFK_RADIO_ON) |
| status = TP_ACPI_WANCARD_RADIOSSW |
| | TP_ACPI_WANCARD_RESUMECTRL; |
| else |
| status = 0; |
| |
| if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| /* sysfs wan enable ---------------------------------------------------- */ |
| static ssize_t wan_enable_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, |
| attr, buf); |
| } |
| |
| static ssize_t wan_enable_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, |
| attr, buf, count); |
| } |
| |
| static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, |
| wan_enable_show, wan_enable_store); |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static struct attribute *wan_attributes[] = { |
| &dev_attr_wwan_enable.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group wan_attr_group = { |
| .attrs = wan_attributes, |
| }; |
| |
| static const struct tpacpi_rfk_ops wan_tprfk_ops = { |
| .get_status = wan_get_status, |
| .set_status = wan_set_status, |
| }; |
| |
| static void wan_shutdown(void) |
| { |
| /* Order firmware to save current state to NVRAM */ |
| if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", |
| TP_ACPI_WGSV_SAVE_STATE)) |
| pr_notice("failed to save WWAN state to NVRAM\n"); |
| else |
| vdbg_printk(TPACPI_DBG_RFKILL, |
| "WWAN state saved to NVRAM\n"); |
| } |
| |
| static void wan_exit(void) |
| { |
| sysfs_remove_group(&tpacpi_pdev->dev.kobj, |
| &wan_attr_group); |
| |
| tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); |
| |
| wan_shutdown(); |
| } |
| |
| static int __init wan_init(struct ibm_init_struct *iibm) |
| { |
| int res; |
| int status = 0; |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
| "initializing wan subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(hkey); |
| |
| tp_features.wan = hkey_handle && |
| acpi_evalf(hkey_handle, &status, "GWAN", "qd"); |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
| "wan is %s, status 0x%02x\n", |
| str_supported(tp_features.wan), |
| status); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| if (dbg_wwanemul) { |
| tp_features.wan = 1; |
| pr_info("wwan switch emulation enabled\n"); |
| } else |
| #endif |
| if (tp_features.wan && |
| !(status & TP_ACPI_WANCARD_HWPRESENT)) { |
| /* no wan hardware present in system */ |
| tp_features.wan = 0; |
| dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
| "wan hardware not installed\n"); |
| } |
| |
| if (!tp_features.wan) |
| return 1; |
| |
| res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, |
| &wan_tprfk_ops, |
| RFKILL_TYPE_WWAN, |
| TPACPI_RFK_WWAN_SW_NAME, |
| true); |
| if (res) |
| return res; |
| |
| res = sysfs_create_group(&tpacpi_pdev->dev.kobj, |
| &wan_attr_group); |
| |
| if (res) { |
| tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); |
| return res; |
| } |
| |
| return 0; |
| } |
| |
| /* procfs -------------------------------------------------------------- */ |
| static int wan_read(struct seq_file *m) |
| { |
| return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); |
| } |
| |
| static int wan_write(char *buf) |
| { |
| return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); |
| } |
| |
| static struct ibm_struct wan_driver_data = { |
| .name = "wan", |
| .read = wan_read, |
| .write = wan_write, |
| .exit = wan_exit, |
| .shutdown = wan_shutdown, |
| }; |
| |
| /************************************************************************* |
| * UWB subdriver |
| */ |
| |
| enum { |
| /* ACPI GUWB/SUWB bits */ |
| TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ |
| TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ |
| }; |
| |
| #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" |
| |
| static int uwb_get_status(void) |
| { |
| int status; |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| if (dbg_uwbemul) |
| return (tpacpi_uwb_emulstate) ? |
| TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
| #endif |
| |
| if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) |
| return -EIO; |
| |
| return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? |
| TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; |
| } |
| |
| static int uwb_set_status(enum tpacpi_rfkill_state state) |
| { |
| int status; |
| |
| vdbg_printk(TPACPI_DBG_RFKILL, |
| "will attempt to %s UWB\n", |
| (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| if (dbg_uwbemul) { |
| tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); |
| return 0; |
| } |
| #endif |
| |
| if (state == TPACPI_RFK_RADIO_ON) |
| status = TP_ACPI_UWB_RADIOSSW; |
| else |
| status = 0; |
| |
| if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static const struct tpacpi_rfk_ops uwb_tprfk_ops = { |
| .get_status = uwb_get_status, |
| .set_status = uwb_set_status, |
| }; |
| |
| static void uwb_exit(void) |
| { |
| tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); |
| } |
| |
| static int __init uwb_init(struct ibm_init_struct *iibm) |
| { |
| int res; |
| int status = 0; |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
| "initializing uwb subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(hkey); |
| |
| tp_features.uwb = hkey_handle && |
| acpi_evalf(hkey_handle, &status, "GUWB", "qd"); |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, |
| "uwb is %s, status 0x%02x\n", |
| str_supported(tp_features.uwb), |
| status); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| if (dbg_uwbemul) { |
| tp_features.uwb = 1; |
| pr_info("uwb switch emulation enabled\n"); |
| } else |
| #endif |
| if (tp_features.uwb && |
| !(status & TP_ACPI_UWB_HWPRESENT)) { |
| /* no uwb hardware present in system */ |
| tp_features.uwb = 0; |
| dbg_printk(TPACPI_DBG_INIT, |
| "uwb hardware not installed\n"); |
| } |
| |
| if (!tp_features.uwb) |
| return 1; |
| |
| res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, |
| &uwb_tprfk_ops, |
| RFKILL_TYPE_UWB, |
| TPACPI_RFK_UWB_SW_NAME, |
| false); |
| return res; |
| } |
| |
| static struct ibm_struct uwb_driver_data = { |
| .name = "uwb", |
| .exit = uwb_exit, |
| .flags.experimental = 1, |
| }; |
| |
| /************************************************************************* |
| * Video subdriver |
| */ |
| |
| #ifdef CONFIG_THINKPAD_ACPI_VIDEO |
| |
| enum video_access_mode { |
| TPACPI_VIDEO_NONE = 0, |
| TPACPI_VIDEO_570, /* 570 */ |
| TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ |
| TPACPI_VIDEO_NEW, /* all others */ |
| }; |
| |
| enum { /* video status flags, based on VIDEO_570 */ |
| TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ |
| TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ |
| TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ |
| }; |
| |
| enum { /* TPACPI_VIDEO_570 constants */ |
| TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ |
| TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to |
| * video_status_flags */ |
| TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ |
| TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ |
| }; |
| |
| static enum video_access_mode video_supported; |
| static int video_orig_autosw; |
| |
| static int video_autosw_get(void); |
| static int video_autosw_set(int enable); |
| |
| TPACPI_HANDLE(vid, root, |
| "\\_SB.PCI.AGP.VGA", /* 570 */ |
| "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ |
| "\\_SB.PCI0.VID0", /* 770e */ |
| "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ |
| "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ |
| "\\_SB.PCI0.AGP.VID", /* all others */ |
| ); /* R30, R31 */ |
| |
| TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ |
| |
| static int __init video_init(struct ibm_init_struct *iibm) |
| { |
| int ivga; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(vid); |
| if (tpacpi_is_ibm()) |
| TPACPI_ACPIHANDLE_INIT(vid2); |
| |
| if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) |
| /* G41, assume IVGA doesn't change */ |
| vid_handle = vid2_handle; |
| |
| if (!vid_handle) |
| /* video switching not supported on R30, R31 */ |
| video_supported = TPACPI_VIDEO_NONE; |
| else if (tpacpi_is_ibm() && |
| acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) |
| /* 570 */ |
| video_supported = TPACPI_VIDEO_570; |
| else if (tpacpi_is_ibm() && |
| acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) |
| /* 600e/x, 770e, 770x */ |
| video_supported = TPACPI_VIDEO_770; |
| else |
| /* all others */ |
| video_supported = TPACPI_VIDEO_NEW; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", |
| str_supported(video_supported != TPACPI_VIDEO_NONE), |
| video_supported); |
| |
| return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1; |
| } |
| |
| static void video_exit(void) |
| { |
| dbg_printk(TPACPI_DBG_EXIT, |
| "restoring original video autoswitch mode\n"); |
| if (video_autosw_set(video_orig_autosw)) |
| pr_err("error while trying to restore original " |
| "video autoswitch mode\n"); |
| } |
| |
| static int video_outputsw_get(void) |
| { |
| int status = 0; |
| int i; |
| |
| switch (video_supported) { |
| case TPACPI_VIDEO_570: |
| if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", |
| TP_ACPI_VIDEO_570_PHSCMD)) |
| return -EIO; |
| status = i & TP_ACPI_VIDEO_570_PHSMASK; |
| break; |
| case TPACPI_VIDEO_770: |
| if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) |
| return -EIO; |
| if (i) |
| status |= TP_ACPI_VIDEO_S_LCD; |
| if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) |
| return -EIO; |
| if (i) |
| status |= TP_ACPI_VIDEO_S_CRT; |
| break; |
| case TPACPI_VIDEO_NEW: |
| if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || |
| !acpi_evalf(NULL, &i, "\\VCDC", "d")) |
| return -EIO; |
| if (i) |
| status |= TP_ACPI_VIDEO_S_CRT; |
| |
| if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || |
| !acpi_evalf(NULL, &i, "\\VCDL", "d")) |
| return -EIO; |
| if (i) |
| status |= TP_ACPI_VIDEO_S_LCD; |
| if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) |
| return -EIO; |
| if (i) |
| status |= TP_ACPI_VIDEO_S_DVI; |
| break; |
| default: |
| return -ENOSYS; |
| } |
| |
| return status; |
| } |
| |
| static int video_outputsw_set(int status) |
| { |
| int autosw; |
| int res = 0; |
| |
| switch (video_supported) { |
| case TPACPI_VIDEO_570: |
| res = acpi_evalf(NULL, NULL, |
| "\\_SB.PHS2", "vdd", |
| TP_ACPI_VIDEO_570_PHS2CMD, |
| status | TP_ACPI_VIDEO_570_PHS2SET); |
| break; |
| case TPACPI_VIDEO_770: |
| autosw = video_autosw_get(); |
| if (autosw < 0) |
| return autosw; |
| |
| res = video_autosw_set(1); |
| if (res) |
| return res; |
| res = acpi_evalf(vid_handle, NULL, |
| "ASWT", "vdd", status * 0x100, 0); |
| if (!autosw && video_autosw_set(autosw)) { |
| pr_err("video auto-switch left enabled due to error\n"); |
| return -EIO; |
| } |
| break; |
| case TPACPI_VIDEO_NEW: |
| res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && |
| acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); |
| break; |
| default: |
| return -ENOSYS; |
| } |
| |
| return (res) ? 0 : -EIO; |
| } |
| |
| static int video_autosw_get(void) |
| { |
| int autosw = 0; |
| |
| switch (video_supported) { |
| case TPACPI_VIDEO_570: |
| if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) |
| return -EIO; |
| break; |
| case TPACPI_VIDEO_770: |
| case TPACPI_VIDEO_NEW: |
| if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) |
| return -EIO; |
| break; |
| default: |
| return -ENOSYS; |
| } |
| |
| return autosw & 1; |
| } |
| |
| static int video_autosw_set(int enable) |
| { |
| if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) |
| return -EIO; |
| return 0; |
| } |
| |
| static int video_outputsw_cycle(void) |
| { |
| int autosw = video_autosw_get(); |
| int res; |
| |
| if (autosw < 0) |
| return autosw; |
| |
| switch (video_supported) { |
| case TPACPI_VIDEO_570: |
| res = video_autosw_set(1); |
| if (res) |
| return res; |
| res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); |
| break; |
| case TPACPI_VIDEO_770: |
| case TPACPI_VIDEO_NEW: |
| res = video_autosw_set(1); |
| if (res) |
| return res; |
| res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); |
| break; |
| default: |
| return -ENOSYS; |
| } |
| if (!autosw && video_autosw_set(autosw)) { |
| pr_err("video auto-switch left enabled due to error\n"); |
| return -EIO; |
| } |
| |
| return (res) ? 0 : -EIO; |
| } |
| |
| static int video_expand_toggle(void) |
| { |
| switch (video_supported) { |
| case TPACPI_VIDEO_570: |
| return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? |
| 0 : -EIO; |
| case TPACPI_VIDEO_770: |
| return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? |
| 0 : -EIO; |
| case TPACPI_VIDEO_NEW: |
| return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? |
| 0 : -EIO; |
| default: |
| return -ENOSYS; |
| } |
| /* not reached */ |
| } |
| |
| static int video_read(struct seq_file *m) |
| { |
| int status, autosw; |
| |
| if (video_supported == TPACPI_VIDEO_NONE) { |
| seq_printf(m, "status:\t\tnot supported\n"); |
| return 0; |
| } |
| |
| /* Even reads can crash X.org, so... */ |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EPERM; |
| |
| status = video_outputsw_get(); |
| if (status < 0) |
| return status; |
| |
| autosw = video_autosw_get(); |
| if (autosw < 0) |
| return autosw; |
| |
| seq_printf(m, "status:\t\tsupported\n"); |
| seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); |
| seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); |
| if (video_supported == TPACPI_VIDEO_NEW) |
| seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); |
| seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); |
| seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); |
| seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); |
| if (video_supported == TPACPI_VIDEO_NEW) |
| seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); |
| seq_printf(m, "commands:\tauto_enable, auto_disable\n"); |
| seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); |
| |
| return 0; |
| } |
| |
| static int video_write(char *buf) |
| { |
| char *cmd; |
| int enable, disable, status; |
| int res; |
| |
| if (video_supported == TPACPI_VIDEO_NONE) |
| return -ENODEV; |
| |
| /* Even reads can crash X.org, let alone writes... */ |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EPERM; |
| |
| enable = 0; |
| disable = 0; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "lcd_enable") == 0) { |
| enable |= TP_ACPI_VIDEO_S_LCD; |
| } else if (strlencmp(cmd, "lcd_disable") == 0) { |
| disable |= TP_ACPI_VIDEO_S_LCD; |
| } else if (strlencmp(cmd, "crt_enable") == 0) { |
| enable |= TP_ACPI_VIDEO_S_CRT; |
| } else if (strlencmp(cmd, "crt_disable") == 0) { |
| disable |= TP_ACPI_VIDEO_S_CRT; |
| } else if (video_supported == TPACPI_VIDEO_NEW && |
| strlencmp(cmd, "dvi_enable") == 0) { |
| enable |= TP_ACPI_VIDEO_S_DVI; |
| } else if (video_supported == TPACPI_VIDEO_NEW && |
| strlencmp(cmd, "dvi_disable") == 0) { |
| disable |= TP_ACPI_VIDEO_S_DVI; |
| } else if (strlencmp(cmd, "auto_enable") == 0) { |
| res = video_autosw_set(1); |
| if (res) |
| return res; |
| } else if (strlencmp(cmd, "auto_disable") == 0) { |
| res = video_autosw_set(0); |
| if (res) |
| return res; |
| } else if (strlencmp(cmd, "video_switch") == 0) { |
| res = video_outputsw_cycle(); |
| if (res) |
| return res; |
| } else if (strlencmp(cmd, "expand_toggle") == 0) { |
| res = video_expand_toggle(); |
| if (res) |
| return res; |
| } else |
| return -EINVAL; |
| } |
| |
| if (enable || disable) { |
| status = video_outputsw_get(); |
| if (status < 0) |
| return status; |
| res = video_outputsw_set((status & ~disable) | enable); |
| if (res) |
| return res; |
| } |
| |
| return 0; |
| } |
| |
| static struct ibm_struct video_driver_data = { |
| .name = "video", |
| .read = video_read, |
| .write = video_write, |
| .exit = video_exit, |
| }; |
| |
| #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ |
| |
| /************************************************************************* |
| * Keyboard backlight subdriver |
| */ |
| |
| static int kbdlight_set_level(int level) |
| { |
| if (!hkey_handle) |
| return -ENXIO; |
| |
| if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| static int kbdlight_get_level(void) |
| { |
| int status = 0; |
| |
| if (!hkey_handle) |
| return -ENXIO; |
| |
| if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) |
| return -EIO; |
| |
| if (status < 0) |
| return status; |
| |
| return status & 0x3; |
| } |
| |
| static bool kbdlight_is_supported(void) |
| { |
| int status = 0; |
| |
| if (!hkey_handle) |
| return false; |
| |
| if (!acpi_has_method(hkey_handle, "MLCG")) { |
| vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); |
| return false; |
| } |
| |
| if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { |
| vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); |
| return false; |
| } |
| |
| if (status < 0) { |
| vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); |
| return false; |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); |
| /* |
| * Guessed test for keyboard backlight: |
| * |
| * Machines with backlight keyboard return: |
| * b010100000010000000XX - ThinkPad X1 Carbon 3rd |
| * b110100010010000000XX - ThinkPad x230 |
| * b010100000010000000XX - ThinkPad x240 |
| * b010100000010000000XX - ThinkPad W541 |
| * (XX is current backlight level) |
| * |
| * Machines without backlight keyboard return: |
| * b10100001000000000000 - ThinkPad x230 |
| * b10110001000000000000 - ThinkPad E430 |
| * b00000000000000000000 - ThinkPad E450 |
| * |
| * Candidate BITs for detection test (XOR): |
| * b01000000001000000000 |
| * ^ |
| */ |
| return status & BIT(9); |
| } |
| |
| static void kbdlight_set_worker(struct work_struct *work) |
| { |
| struct tpacpi_led_classdev *data = |
| container_of(work, struct tpacpi_led_classdev, work); |
| |
| if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) |
| kbdlight_set_level(data->new_state); |
| } |
| |
| static void kbdlight_sysfs_set(struct led_classdev *led_cdev, |
| enum led_brightness brightness) |
| { |
| struct tpacpi_led_classdev *data = |
| container_of(led_cdev, |
| struct tpacpi_led_classdev, |
| led_classdev); |
| data->new_state = brightness; |
| queue_work(tpacpi_wq, &data->work); |
| } |
| |
| static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) |
| { |
| int level; |
| |
| level = kbdlight_get_level(); |
| if (level < 0) |
| return 0; |
| |
| return level; |
| } |
| |
| static struct tpacpi_led_classdev tpacpi_led_kbdlight = { |
| .led_classdev = { |
| .name = "tpacpi::kbd_backlight", |
| .max_brightness = 2, |
| .brightness_set = &kbdlight_sysfs_set, |
| .brightness_get = &kbdlight_sysfs_get, |
| .flags = LED_CORE_SUSPENDRESUME, |
| } |
| }; |
| |
| static int __init kbdlight_init(struct ibm_init_struct *iibm) |
| { |
| int rc; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(hkey); |
| INIT_WORK(&tpacpi_led_kbdlight.work, kbdlight_set_worker); |
| |
| if (!kbdlight_is_supported()) { |
| tp_features.kbdlight = 0; |
| vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); |
| return 1; |
| } |
| |
| tp_features.kbdlight = 1; |
| |
| rc = led_classdev_register(&tpacpi_pdev->dev, |
| &tpacpi_led_kbdlight.led_classdev); |
| if (rc < 0) { |
| tp_features.kbdlight = 0; |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| static void kbdlight_exit(void) |
| { |
| if (tp_features.kbdlight) |
| led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); |
| flush_workqueue(tpacpi_wq); |
| } |
| |
| static int kbdlight_read(struct seq_file *m) |
| { |
| int level; |
| |
| if (!tp_features.kbdlight) { |
| seq_printf(m, "status:\t\tnot supported\n"); |
| } else { |
| level = kbdlight_get_level(); |
| if (level < 0) |
| seq_printf(m, "status:\t\terror %d\n", level); |
| else |
| seq_printf(m, "status:\t\t%d\n", level); |
| seq_printf(m, "commands:\t0, 1, 2\n"); |
| } |
| |
| return 0; |
| } |
| |
| static int kbdlight_write(char *buf) |
| { |
| char *cmd; |
| int level = -1; |
| |
| if (!tp_features.kbdlight) |
| return -ENODEV; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "0") == 0) |
| level = 0; |
| else if (strlencmp(cmd, "1") == 0) |
| level = 1; |
| else if (strlencmp(cmd, "2") == 0) |
| level = 2; |
| else |
| return -EINVAL; |
| } |
| |
| if (level == -1) |
| return -EINVAL; |
| |
| return kbdlight_set_level(level); |
| } |
| |
| static struct ibm_struct kbdlight_driver_data = { |
| .name = "kbdlight", |
| .read = kbdlight_read, |
| .write = kbdlight_write, |
| .exit = kbdlight_exit, |
| }; |
| |
| /************************************************************************* |
| * Light (thinklight) subdriver |
| */ |
| |
| TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ |
| TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ |
| |
| static int light_get_status(void) |
| { |
| int status = 0; |
| |
| if (tp_features.light_status) { |
| if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) |
| return -EIO; |
| return (!!status); |
| } |
| |
| return -ENXIO; |
| } |
| |
| static int light_set_status(int status) |
| { |
| int rc; |
| |
| if (tp_features.light) { |
| if (cmos_handle) { |
| rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", |
| (status) ? |
| TP_CMOS_THINKLIGHT_ON : |
| TP_CMOS_THINKLIGHT_OFF); |
| } else { |
| rc = acpi_evalf(lght_handle, NULL, NULL, "vd", |
| (status) ? 1 : 0); |
| } |
| return (rc) ? 0 : -EIO; |
| } |
| |
| return -ENXIO; |
| } |
| |
| static void light_set_status_worker(struct work_struct *work) |
| { |
| struct tpacpi_led_classdev *data = |
| container_of(work, struct tpacpi_led_classdev, work); |
| |
| if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) |
| light_set_status((data->new_state != TPACPI_LED_OFF)); |
| } |
| |
| static void light_sysfs_set(struct led_classdev *led_cdev, |
| enum led_brightness brightness) |
| { |
| struct tpacpi_led_classdev *data = |
| container_of(led_cdev, |
| struct tpacpi_led_classdev, |
| led_classdev); |
| data->new_state = (brightness != LED_OFF) ? |
| TPACPI_LED_ON : TPACPI_LED_OFF; |
| queue_work(tpacpi_wq, &data->work); |
| } |
| |
| static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) |
| { |
| return (light_get_status() == 1) ? LED_FULL : LED_OFF; |
| } |
| |
| static struct tpacpi_led_classdev tpacpi_led_thinklight = { |
| .led_classdev = { |
| .name = "tpacpi::thinklight", |
| .brightness_set = &light_sysfs_set, |
| .brightness_get = &light_sysfs_get, |
| } |
| }; |
| |
| static int __init light_init(struct ibm_init_struct *iibm) |
| { |
| int rc; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); |
| |
| if (tpacpi_is_ibm()) { |
| TPACPI_ACPIHANDLE_INIT(ledb); |
| TPACPI_ACPIHANDLE_INIT(lght); |
| } |
| TPACPI_ACPIHANDLE_INIT(cmos); |
| INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker); |
| |
| /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ |
| tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; |
| |
| if (tp_features.light) |
| /* light status not supported on |
| 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ |
| tp_features.light_status = |
| acpi_evalf(ec_handle, NULL, "KBLT", "qv"); |
| |
| vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", |
| str_supported(tp_features.light), |
| str_supported(tp_features.light_status)); |
| |
| if (!tp_features.light) |
| return 1; |
| |
| rc = led_classdev_register(&tpacpi_pdev->dev, |
| &tpacpi_led_thinklight.led_classdev); |
| |
| if (rc < 0) { |
| tp_features.light = 0; |
| tp_features.light_status = 0; |
| } else { |
| rc = 0; |
| } |
| |
| return rc; |
| } |
| |
| static void light_exit(void) |
| { |
| led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); |
| flush_workqueue(tpacpi_wq); |
| } |
| |
| static int light_read(struct seq_file *m) |
| { |
| int status; |
| |
| if (!tp_features.light) { |
| seq_printf(m, "status:\t\tnot supported\n"); |
| } else if (!tp_features.light_status) { |
| seq_printf(m, "status:\t\tunknown\n"); |
| seq_printf(m, "commands:\ton, off\n"); |
| } else { |
| status = light_get_status(); |
| if (status < 0) |
| return status; |
| seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); |
| seq_printf(m, "commands:\ton, off\n"); |
| } |
| |
| return 0; |
| } |
| |
| static int light_write(char *buf) |
| { |
| char *cmd; |
| int newstatus = 0; |
| |
| if (!tp_features.light) |
| return -ENODEV; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "on") == 0) { |
| newstatus = 1; |
| } else if (strlencmp(cmd, "off") == 0) { |
| newstatus = 0; |
| } else |
| return -EINVAL; |
| } |
| |
| return light_set_status(newstatus); |
| } |
| |
| static struct ibm_struct light_driver_data = { |
| .name = "light", |
| .read = light_read, |
| .write = light_write, |
| .exit = light_exit, |
| }; |
| |
| /************************************************************************* |
| * CMOS subdriver |
| */ |
| |
| /* sysfs cmos_command -------------------------------------------------- */ |
| static ssize_t cmos_command_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long cmos_cmd; |
| int res; |
| |
| if (parse_strtoul(buf, 21, &cmos_cmd)) |
| return -EINVAL; |
| |
| res = issue_thinkpad_cmos_command(cmos_cmd); |
| return (res) ? res : count; |
| } |
| |
| static DEVICE_ATTR_WO(cmos_command); |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static int __init cmos_init(struct ibm_init_struct *iibm) |
| { |
| int res; |
| |
| vdbg_printk(TPACPI_DBG_INIT, |
| "initializing cmos commands subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(cmos); |
| |
| vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", |
| str_supported(cmos_handle != NULL)); |
| |
| res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); |
| if (res) |
| return res; |
| |
| return (cmos_handle) ? 0 : 1; |
| } |
| |
| static void cmos_exit(void) |
| { |
| device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); |
| } |
| |
| static int cmos_read(struct seq_file *m) |
| { |
| /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
| R30, R31, T20-22, X20-21 */ |
| if (!cmos_handle) |
| seq_printf(m, "status:\t\tnot supported\n"); |
| else { |
| seq_printf(m, "status:\t\tsupported\n"); |
| seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); |
| } |
| |
| return 0; |
| } |
| |
| static int cmos_write(char *buf) |
| { |
| char *cmd; |
| int cmos_cmd, res; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (sscanf(cmd, "%u", &cmos_cmd) == 1 && |
| cmos_cmd >= 0 && cmos_cmd <= 21) { |
| /* cmos_cmd set */ |
| } else |
| return -EINVAL; |
| |
| res = issue_thinkpad_cmos_command(cmos_cmd); |
| if (res) |
| return res; |
| } |
| |
| return 0; |
| } |
| |
| static struct ibm_struct cmos_driver_data = { |
| .name = "cmos", |
| .read = cmos_read, |
| .write = cmos_write, |
| .exit = cmos_exit, |
| }; |
| |
| /************************************************************************* |
| * LED subdriver |
| */ |
| |
| enum led_access_mode { |
| TPACPI_LED_NONE = 0, |
| TPACPI_LED_570, /* 570 */ |
| TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ |
| TPACPI_LED_NEW, /* all others */ |
| }; |
| |
| enum { /* For TPACPI_LED_OLD */ |
| TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ |
| TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ |
| TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ |
| }; |
| |
| static enum led_access_mode led_supported; |
| |
| static acpi_handle led_handle; |
| |
| #define TPACPI_LED_NUMLEDS 16 |
| static struct tpacpi_led_classdev *tpacpi_leds; |
| static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; |
| static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { |
| /* there's a limit of 19 chars + NULL before 2.6.26 */ |
| "tpacpi::power", |
| "tpacpi:orange:batt", |
| "tpacpi:green:batt", |
| "tpacpi::dock_active", |
| "tpacpi::bay_active", |
| "tpacpi::dock_batt", |
| "tpacpi::unknown_led", |
| "tpacpi::standby", |
| "tpacpi::dock_status1", |
| "tpacpi::dock_status2", |
| "tpacpi::unknown_led2", |
| "tpacpi::unknown_led3", |
| "tpacpi::thinkvantage", |
| }; |
| #define TPACPI_SAFE_LEDS 0x1081U |
| |
| static inline bool tpacpi_is_led_restricted(const unsigned int led) |
| { |
| #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS |
| return false; |
| #else |
| return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; |
| #endif |
| } |
| |
| static int led_get_status(const unsigned int led) |
| { |
| int status; |
| enum led_status_t led_s; |
| |
| switch (led_supported) { |
| case TPACPI_LED_570: |
| if (!acpi_evalf(ec_handle, |
| &status, "GLED", "dd", 1 << led)) |
| return -EIO; |
| led_s = (status == 0) ? |
| TPACPI_LED_OFF : |
| ((status == 1) ? |
| TPACPI_LED_ON : |
| TPACPI_LED_BLINK); |
| tpacpi_led_state_cache[led] = led_s; |
| return led_s; |
| default: |
| return -ENXIO; |
| } |
| |
| /* not reached */ |
| } |
| |
| static int led_set_status(const unsigned int led, |
| const enum led_status_t ledstatus) |
| { |
| /* off, on, blink. Index is led_status_t */ |
| static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; |
| static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; |
| |
| int rc = 0; |
| |
| switch (led_supported) { |
| case TPACPI_LED_570: |
| /* 570 */ |
| if (unlikely(led > 7)) |
| return -EINVAL; |
| if (unlikely(tpacpi_is_led_restricted(led))) |
| return -EPERM; |
| if (!acpi_evalf(led_handle, NULL, NULL, "vdd", |
| (1 << led), led_sled_arg1[ledstatus])) |
| rc = -EIO; |
| break; |
| case TPACPI_LED_OLD: |
| /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ |
| if (unlikely(led > 7)) |
| return -EINVAL; |
| if (unlikely(tpacpi_is_led_restricted(led))) |
| return -EPERM; |
| rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); |
| if (rc >= 0) |
| rc = ec_write(TPACPI_LED_EC_HLBL, |
| (ledstatus == TPACPI_LED_BLINK) << led); |
| if (rc >= 0) |
| rc = ec_write(TPACPI_LED_EC_HLCL, |
| (ledstatus != TPACPI_LED_OFF) << led); |
| break; |
| case TPACPI_LED_NEW: |
| /* all others */ |
| if (unlikely(led >= TPACPI_LED_NUMLEDS)) |
| return -EINVAL; |
| if (unlikely(tpacpi_is_led_restricted(led))) |
| return -EPERM; |
| if (!acpi_evalf(led_handle, NULL, NULL, "vdd", |
| led, led_led_arg1[ledstatus])) |
| rc = -EIO; |
| break; |
| default: |
| rc = -ENXIO; |
| } |
| |
| if (!rc) |
| tpacpi_led_state_cache[led] = ledstatus; |
| |
| return rc; |
| } |
| |
| static void led_set_status_worker(struct work_struct *work) |
| { |
| struct tpacpi_led_classdev *data = |
| container_of(work, struct tpacpi_led_classdev, work); |
| |
| if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) |
| led_set_status(data->led, data->new_state); |
| } |
| |
| static void led_sysfs_set(struct led_classdev *led_cdev, |
| enum led_brightness brightness) |
| { |
| struct tpacpi_led_classdev *data = container_of(led_cdev, |
| struct tpacpi_led_classdev, led_classdev); |
| |
| if (brightness == LED_OFF) |
| data->new_state = TPACPI_LED_OFF; |
| else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) |
| data->new_state = TPACPI_LED_ON; |
| else |
| data->new_state = TPACPI_LED_BLINK; |
| |
| queue_work(tpacpi_wq, &data->work); |
| } |
| |
| static int led_sysfs_blink_set(struct led_classdev *led_cdev, |
| unsigned long *delay_on, unsigned long *delay_off) |
| { |
| struct tpacpi_led_classdev *data = container_of(led_cdev, |
| struct tpacpi_led_classdev, led_classdev); |
| |
| /* Can we choose the flash rate? */ |
| if (*delay_on == 0 && *delay_off == 0) { |
| /* yes. set them to the hardware blink rate (1 Hz) */ |
| *delay_on = 500; /* ms */ |
| *delay_off = 500; /* ms */ |
| } else if ((*delay_on != 500) || (*delay_off != 500)) |
| return -EINVAL; |
| |
| data->new_state = TPACPI_LED_BLINK; |
| queue_work(tpacpi_wq, &data->work); |
| |
| return 0; |
| } |
| |
| static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) |
| { |
| int rc; |
| |
| struct tpacpi_led_classdev *data = container_of(led_cdev, |
| struct tpacpi_led_classdev, led_classdev); |
| |
| rc = led_get_status(data->led); |
| |
| if (rc == TPACPI_LED_OFF || rc < 0) |
| rc = LED_OFF; /* no error handling in led class :( */ |
| else |
| rc = LED_FULL; |
| |
| return rc; |
| } |
| |
| static void led_exit(void) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { |
| if (tpacpi_leds[i].led_classdev.name) |
| led_classdev_unregister(&tpacpi_leds[i].led_classdev); |
| } |
| |
| flush_workqueue(tpacpi_wq); |
| kfree(tpacpi_leds); |
| } |
| |
| static int __init tpacpi_init_led(unsigned int led) |
| { |
| int rc; |
| |
| tpacpi_leds[led].led = led; |
| |
| /* LEDs with no name don't get registered */ |
| if (!tpacpi_led_names[led]) |
| return 0; |
| |
| tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set; |
| tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; |
| if (led_supported == TPACPI_LED_570) |
| tpacpi_leds[led].led_classdev.brightness_get = |
| &led_sysfs_get; |
| |
| tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; |
| |
| INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker); |
| |
| rc = led_classdev_register(&tpacpi_pdev->dev, |
| &tpacpi_leds[led].led_classdev); |
| if (rc < 0) |
| tpacpi_leds[led].led_classdev.name = NULL; |
| |
| return rc; |
| } |
| |
| static const struct tpacpi_quirk led_useful_qtable[] __initconst = { |
| TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ |
| TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ |
| TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ |
| |
| TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ |
| TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ |
| TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ |
| TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ |
| TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ |
| TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ |
| TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ |
| TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ |
| |
| TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ |
| TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ |
| TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ |
| TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ |
| TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ |
| |
| TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ |
| TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ |
| TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ |
| TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ |
| |
| /* (1) - may have excess leds enabled on MSB */ |
| |
| /* Defaults (order matters, keep last, don't reorder!) */ |
| { /* Lenovo */ |
| .vendor = PCI_VENDOR_ID_LENOVO, |
| .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, |
| .quirks = 0x1fffU, |
| }, |
| { /* IBM ThinkPads with no EC version string */ |
| .vendor = PCI_VENDOR_ID_IBM, |
| .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, |
| .quirks = 0x00ffU, |
| }, |
| { /* IBM ThinkPads with EC version string */ |
| .vendor = PCI_VENDOR_ID_IBM, |
| .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, |
| .quirks = 0x00bfU, |
| }, |
| }; |
| |
| #undef TPACPI_LEDQ_IBM |
| #undef TPACPI_LEDQ_LNV |
| |
| static enum led_access_mode __init led_init_detect_mode(void) |
| { |
| acpi_status status; |
| |
| if (tpacpi_is_ibm()) { |
| /* 570 */ |
| status = acpi_get_handle(ec_handle, "SLED", &led_handle); |
| if (ACPI_SUCCESS(status)) |
| return TPACPI_LED_570; |
| |
| /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ |
| status = acpi_get_handle(ec_handle, "SYSL", &led_handle); |
| if (ACPI_SUCCESS(status)) |
| return TPACPI_LED_OLD; |
| } |
| |
| /* most others */ |
| status = acpi_get_handle(ec_handle, "LED", &led_handle); |
| if (ACPI_SUCCESS(status)) |
| return TPACPI_LED_NEW; |
| |
| /* R30, R31, and unknown firmwares */ |
| led_handle = NULL; |
| return TPACPI_LED_NONE; |
| } |
| |
| static int __init led_init(struct ibm_init_struct *iibm) |
| { |
| unsigned int i; |
| int rc; |
| unsigned long useful_leds; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); |
| |
| led_supported = led_init_detect_mode(); |
| |
| if (led_supported != TPACPI_LED_NONE) { |
| useful_leds = tpacpi_check_quirks(led_useful_qtable, |
| ARRAY_SIZE(led_useful_qtable)); |
| |
| if (!useful_leds) { |
| led_handle = NULL; |
| led_supported = TPACPI_LED_NONE; |
| } |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", |
| str_supported(led_supported), led_supported); |
| |
| if (led_supported == TPACPI_LED_NONE) |
| return 1; |
| |
| tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS, |
| GFP_KERNEL); |
| if (!tpacpi_leds) { |
| pr_err("Out of memory for LED data\n"); |
| return -ENOMEM; |
| } |
| |
| for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { |
| tpacpi_leds[i].led = -1; |
| |
| if (!tpacpi_is_led_restricted(i) && |
| test_bit(i, &useful_leds)) { |
| rc = tpacpi_init_led(i); |
| if (rc < 0) { |
| led_exit(); |
| return rc; |
| } |
| } |
| } |
| |
| #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS |
| pr_notice("warning: userspace override of important " |
| "firmware LEDs is enabled\n"); |
| #endif |
| return 0; |
| } |
| |
| #define str_led_status(s) \ |
| ((s) == TPACPI_LED_OFF ? "off" : \ |
| ((s) == TPACPI_LED_ON ? "on" : "blinking")) |
| |
| static int led_read(struct seq_file *m) |
| { |
| if (!led_supported) { |
| seq_printf(m, "status:\t\tnot supported\n"); |
| return 0; |
| } |
| seq_printf(m, "status:\t\tsupported\n"); |
| |
| if (led_supported == TPACPI_LED_570) { |
| /* 570 */ |
| int i, status; |
| for (i = 0; i < 8; i++) { |
| status = led_get_status(i); |
| if (status < 0) |
| return -EIO; |
| seq_printf(m, "%d:\t\t%s\n", |
| i, str_led_status(status)); |
| } |
| } |
| |
| seq_printf(m, "commands:\t" |
| "<led> on, <led> off, <led> blink (<led> is 0-15)\n"); |
| |
| return 0; |
| } |
| |
| static int led_write(char *buf) |
| { |
| char *cmd; |
| int led, rc; |
| enum led_status_t s; |
| |
| if (!led_supported) |
| return -ENODEV; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (sscanf(cmd, "%d", &led) != 1) |
| return -EINVAL; |
| |
| if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) || |
| tpacpi_leds[led].led < 0) |
| return -ENODEV; |
| |
| if (strstr(cmd, "off")) { |
| s = TPACPI_LED_OFF; |
| } else if (strstr(cmd, "on")) { |
| s = TPACPI_LED_ON; |
| } else if (strstr(cmd, "blink")) { |
| s = TPACPI_LED_BLINK; |
| } else { |
| return -EINVAL; |
| } |
| |
| rc = led_set_status(led, s); |
| if (rc < 0) |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| static struct ibm_struct led_driver_data = { |
| .name = "led", |
| .read = led_read, |
| .write = led_write, |
| .exit = led_exit, |
| }; |
| |
| /************************************************************************* |
| * Beep subdriver |
| */ |
| |
| TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ |
| |
| #define TPACPI_BEEP_Q1 0x0001 |
| |
| static const struct tpacpi_quirk beep_quirk_table[] __initconst = { |
| TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ |
| TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ |
| }; |
| |
| static int __init beep_init(struct ibm_init_struct *iibm) |
| { |
| unsigned long quirks; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(beep); |
| |
| vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", |
| str_supported(beep_handle != NULL)); |
| |
| quirks = tpacpi_check_quirks(beep_quirk_table, |
| ARRAY_SIZE(beep_quirk_table)); |
| |
| tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); |
| |
| return (beep_handle) ? 0 : 1; |
| } |
| |
| static int beep_read(struct seq_file *m) |
| { |
| if (!beep_handle) |
| seq_printf(m, "status:\t\tnot supported\n"); |
| else { |
| seq_printf(m, "status:\t\tsupported\n"); |
| seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); |
| } |
| |
| return 0; |
| } |
| |
| static int beep_write(char *buf) |
| { |
| char *cmd; |
| int beep_cmd; |
| |
| if (!beep_handle) |
| return -ENODEV; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (sscanf(cmd, "%u", &beep_cmd) == 1 && |
| beep_cmd >= 0 && beep_cmd <= 17) { |
| /* beep_cmd set */ |
| } else |
| return -EINVAL; |
| if (tp_features.beep_needs_two_args) { |
| if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", |
| beep_cmd, 0)) |
| return -EIO; |
| } else { |
| if (!acpi_evalf(beep_handle, NULL, NULL, "vd", |
| beep_cmd)) |
| return -EIO; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static struct ibm_struct beep_driver_data = { |
| .name = "beep", |
| .read = beep_read, |
| .write = beep_write, |
| }; |
| |
| /************************************************************************* |
| * Thermal subdriver |
| */ |
| |
| enum thermal_access_mode { |
| TPACPI_THERMAL_NONE = 0, /* No thermal support */ |
| TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ |
| TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ |
| TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ |
| TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ |
| }; |
| |
| enum { /* TPACPI_THERMAL_TPEC_* */ |
| TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ |
| TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ |
| TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ |
| |
| TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ |
| }; |
| |
| |
| #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ |
| struct ibm_thermal_sensors_struct { |
| s32 temp[TPACPI_MAX_THERMAL_SENSORS]; |
| }; |
| |
| static enum thermal_access_mode thermal_read_mode; |
| |
| /* idx is zero-based */ |
| static int thermal_get_sensor(int idx, s32 *value) |
| { |
| int t; |
| s8 tmp; |
| char tmpi[5]; |
| |
| t = TP_EC_THERMAL_TMP0; |
| |
| switch (thermal_read_mode) { |
| #if TPACPI_MAX_THERMAL_SENSORS >= 16 |
| case TPACPI_THERMAL_TPEC_16: |
| if (idx >= 8 && idx <= 15) { |
| t = TP_EC_THERMAL_TMP8; |
| idx -= 8; |
| } |
| /* fallthrough */ |
| #endif |
| case TPACPI_THERMAL_TPEC_8: |
| if (idx <= 7) { |
| if (!acpi_ec_read(t + idx, &tmp)) |
| return -EIO; |
| *value = tmp * 1000; |
| return 0; |
| } |
| break; |
| |
| case TPACPI_THERMAL_ACPI_UPDT: |
| if (idx <= 7) { |
| snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); |
| if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) |
| return -EIO; |
| if (!acpi_evalf(ec_handle, &t, tmpi, "d")) |
| return -EIO; |
| *value = (t - 2732) * 100; |
| return 0; |
| } |
| break; |
| |
| case TPACPI_THERMAL_ACPI_TMP07: |
| if (idx <= 7) { |
| snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); |
| if (!acpi_evalf(ec_handle, &t, tmpi, "d")) |
| return -EIO; |
| if (t > 127 || t < -127) |
| t = TP_EC_THERMAL_TMP_NA; |
| *value = t * 1000; |
| return 0; |
| } |
| break; |
| |
| case TPACPI_THERMAL_NONE: |
| default: |
| return -ENOSYS; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) |
| { |
| int res, i; |
| int n; |
| |
| n = 8; |
| i = 0; |
| |
| if (!s) |
| return -EINVAL; |
| |
| if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) |
| n = 16; |
| |
| for (i = 0 ; i < n; i++) { |
| res = thermal_get_sensor(i, &s->temp[i]); |
| if (res) |
| return res; |
| } |
| |
| return n; |
| } |
| |
| static void thermal_dump_all_sensors(void) |
| { |
| int n, i; |
| struct ibm_thermal_sensors_struct t; |
| |
| n = thermal_get_sensors(&t); |
| if (n <= 0) |
| return; |
| |
| pr_notice("temperatures (Celsius):"); |
| |
| for (i = 0; i < n; i++) { |
| if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) |
| pr_cont(" %d", (int)(t.temp[i] / 1000)); |
| else |
| pr_cont(" N/A"); |
| } |
| |
| pr_cont("\n"); |
| } |
| |
| /* sysfs temp##_input -------------------------------------------------- */ |
| |
| static ssize_t thermal_temp_input_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct sensor_device_attribute *sensor_attr = |
| to_sensor_dev_attr(attr); |
| int idx = sensor_attr->index; |
| s32 value; |
| int res; |
| |
| res = thermal_get_sensor(idx, &value); |
| if (res) |
| return res; |
| if (value == TPACPI_THERMAL_SENSOR_NA) |
| return -ENXIO; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", value); |
| } |
| |
| #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ |
| SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ |
| thermal_temp_input_show, NULL, _idxB) |
| |
| static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { |
| THERMAL_SENSOR_ATTR_TEMP(1, 0), |
| THERMAL_SENSOR_ATTR_TEMP(2, 1), |
| THERMAL_SENSOR_ATTR_TEMP(3, 2), |
| THERMAL_SENSOR_ATTR_TEMP(4, 3), |
| THERMAL_SENSOR_ATTR_TEMP(5, 4), |
| THERMAL_SENSOR_ATTR_TEMP(6, 5), |
| THERMAL_SENSOR_ATTR_TEMP(7, 6), |
| THERMAL_SENSOR_ATTR_TEMP(8, 7), |
| THERMAL_SENSOR_ATTR_TEMP(9, 8), |
| THERMAL_SENSOR_ATTR_TEMP(10, 9), |
| THERMAL_SENSOR_ATTR_TEMP(11, 10), |
| THERMAL_SENSOR_ATTR_TEMP(12, 11), |
| THERMAL_SENSOR_ATTR_TEMP(13, 12), |
| THERMAL_SENSOR_ATTR_TEMP(14, 13), |
| THERMAL_SENSOR_ATTR_TEMP(15, 14), |
| THERMAL_SENSOR_ATTR_TEMP(16, 15), |
| }; |
| |
| #define THERMAL_ATTRS(X) \ |
| &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr |
| |
| static struct attribute *thermal_temp_input_attr[] = { |
| THERMAL_ATTRS(8), |
| THERMAL_ATTRS(9), |
| THERMAL_ATTRS(10), |
| THERMAL_ATTRS(11), |
| THERMAL_ATTRS(12), |
| THERMAL_ATTRS(13), |
| THERMAL_ATTRS(14), |
| THERMAL_ATTRS(15), |
| THERMAL_ATTRS(0), |
| THERMAL_ATTRS(1), |
| THERMAL_ATTRS(2), |
| THERMAL_ATTRS(3), |
| THERMAL_ATTRS(4), |
| THERMAL_ATTRS(5), |
| THERMAL_ATTRS(6), |
| THERMAL_ATTRS(7), |
| NULL |
| }; |
| |
| static const struct attribute_group thermal_temp_input16_group = { |
| .attrs = thermal_temp_input_attr |
| }; |
| |
| static const struct attribute_group thermal_temp_input8_group = { |
| .attrs = &thermal_temp_input_attr[8] |
| }; |
| |
| #undef THERMAL_SENSOR_ATTR_TEMP |
| #undef THERMAL_ATTRS |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static int __init thermal_init(struct ibm_init_struct *iibm) |
| { |
| u8 t, ta1, ta2; |
| int i; |
| int acpi_tmp7; |
| int res; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); |
| |
| acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); |
| |
| if (thinkpad_id.ec_model) { |
| /* |
| * Direct EC access mode: sensors at registers |
| * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for |
| * non-implemented, thermal sensors return 0x80 when |
| * not available |
| */ |
| |
| ta1 = ta2 = 0; |
| for (i = 0; i < 8; i++) { |
| if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { |
| ta1 |= t; |
| } else { |
| ta1 = 0; |
| break; |
| } |
| if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { |
| ta2 |= t; |
| } else { |
| ta1 = 0; |
| break; |
| } |
| } |
| if (ta1 == 0) { |
| /* This is sheer paranoia, but we handle it anyway */ |
| if (acpi_tmp7) { |
| pr_err("ThinkPad ACPI EC access misbehaving, " |
| "falling back to ACPI TMPx access " |
| "mode\n"); |
| thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; |
| } else { |
| pr_err("ThinkPad ACPI EC access misbehaving, " |
| "disabling thermal sensors access\n"); |
| thermal_read_mode = TPACPI_THERMAL_NONE; |
| } |
| } else { |
| thermal_read_mode = |
| (ta2 != 0) ? |
| TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; |
| } |
| } else if (acpi_tmp7) { |
| if (tpacpi_is_ibm() && |
| acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { |
| /* 600e/x, 770e, 770x */ |
| thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; |
| } else { |
| /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ |
| thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; |
| } |
| } else { |
| /* temperatures not supported on 570, G4x, R30, R31, R32 */ |
| thermal_read_mode = TPACPI_THERMAL_NONE; |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", |
| str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), |
| thermal_read_mode); |
| |
| switch (thermal_read_mode) { |
| case TPACPI_THERMAL_TPEC_16: |
| res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, |
| &thermal_temp_input16_group); |
| if (res) |
| return res; |
| break; |
| case TPACPI_THERMAL_TPEC_8: |
| case TPACPI_THERMAL_ACPI_TMP07: |
| case TPACPI_THERMAL_ACPI_UPDT: |
| res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, |
| &thermal_temp_input8_group); |
| if (res) |
| return res; |
| break; |
| case TPACPI_THERMAL_NONE: |
| default: |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static void thermal_exit(void) |
| { |
| switch (thermal_read_mode) { |
| case TPACPI_THERMAL_TPEC_16: |
| sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, |
| &thermal_temp_input16_group); |
| break; |
| case TPACPI_THERMAL_TPEC_8: |
| case TPACPI_THERMAL_ACPI_TMP07: |
| case TPACPI_THERMAL_ACPI_UPDT: |
| sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, |
| &thermal_temp_input8_group); |
| break; |
| case TPACPI_THERMAL_NONE: |
| default: |
| break; |
| } |
| } |
| |
| static int thermal_read(struct seq_file *m) |
| { |
| int n, i; |
| struct ibm_thermal_sensors_struct t; |
| |
| n = thermal_get_sensors(&t); |
| if (unlikely(n < 0)) |
| return n; |
| |
| seq_printf(m, "temperatures:\t"); |
| |
| if (n > 0) { |
| for (i = 0; i < (n - 1); i++) |
| seq_printf(m, "%d ", t.temp[i] / 1000); |
| seq_printf(m, "%d\n", t.temp[i] / 1000); |
| } else |
| seq_printf(m, "not supported\n"); |
| |
| return 0; |
| } |
| |
| static struct ibm_struct thermal_driver_data = { |
| .name = "thermal", |
| .read = thermal_read, |
| .exit = thermal_exit, |
| }; |
| |
| /************************************************************************* |
| * Backlight/brightness subdriver |
| */ |
| |
| #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" |
| |
| /* |
| * ThinkPads can read brightness from two places: EC HBRV (0x31), or |
| * CMOS NVRAM byte 0x5E, bits 0-3. |
| * |
| * EC HBRV (0x31) has the following layout |
| * Bit 7: unknown function |
| * Bit 6: unknown function |
| * Bit 5: Z: honour scale changes, NZ: ignore scale changes |
| * Bit 4: must be set to zero to avoid problems |
| * Bit 3-0: backlight brightness level |
| * |
| * brightness_get_raw returns status data in the HBRV layout |
| * |
| * WARNING: The X61 has been verified to use HBRV for something else, so |
| * this should be used _only_ on IBM ThinkPads, and maybe with some careful |
| * testing on the very early *60 Lenovo models... |
| */ |
| |
| enum { |
| TP_EC_BACKLIGHT = 0x31, |
| |
| /* TP_EC_BACKLIGHT bitmasks */ |
| TP_EC_BACKLIGHT_LVLMSK = 0x1F, |
| TP_EC_BACKLIGHT_CMDMSK = 0xE0, |
| TP_EC_BACKLIGHT_MAPSW = 0x20, |
| }; |
| |
| enum tpacpi_brightness_access_mode { |
| TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ |
| TPACPI_BRGHT_MODE_EC, /* EC control */ |
| TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ |
| TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ |
| TPACPI_BRGHT_MODE_MAX |
| }; |
| |
| static struct backlight_device *ibm_backlight_device; |
| |
| static enum tpacpi_brightness_access_mode brightness_mode = |
| TPACPI_BRGHT_MODE_MAX; |
| |
| static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ |
| |
| static struct mutex brightness_mutex; |
| |
| /* NVRAM brightness access, |
| * call with brightness_mutex held! */ |
| static unsigned int tpacpi_brightness_nvram_get(void) |
| { |
| u8 lnvram; |
| |
| lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) |
| & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) |
| >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; |
| lnvram &= bright_maxlvl; |
| |
| return lnvram; |
| } |
| |
| static void tpacpi_brightness_checkpoint_nvram(void) |
| { |
| u8 lec = 0; |
| u8 b_nvram; |
| |
| if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) |
| return; |
| |
| vdbg_printk(TPACPI_DBG_BRGHT, |
| "trying to checkpoint backlight level to NVRAM...\n"); |
| |
| if (mutex_lock_killable(&brightness_mutex) < 0) |
| return; |
| |
| if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) |
| goto unlock; |
| lec &= TP_EC_BACKLIGHT_LVLMSK; |
| b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); |
| |
| if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) |
| >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { |
| /* NVRAM needs update */ |
| b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << |
| TP_NVRAM_POS_LEVEL_BRIGHTNESS); |
| b_nvram |= lec; |
| nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); |
| dbg_printk(TPACPI_DBG_BRGHT, |
| "updated NVRAM backlight level to %u (0x%02x)\n", |
| (unsigned int) lec, (unsigned int) b_nvram); |
| } else |
| vdbg_printk(TPACPI_DBG_BRGHT, |
| "NVRAM backlight level already is %u (0x%02x)\n", |
| (unsigned int) lec, (unsigned int) b_nvram); |
| |
| unlock: |
| mutex_unlock(&brightness_mutex); |
| } |
| |
| |
| /* call with brightness_mutex held! */ |
| static int tpacpi_brightness_get_raw(int *status) |
| { |
| u8 lec = 0; |
| |
| switch (brightness_mode) { |
| case TPACPI_BRGHT_MODE_UCMS_STEP: |
| *status = tpacpi_brightness_nvram_get(); |
| return 0; |
| case TPACPI_BRGHT_MODE_EC: |
| case TPACPI_BRGHT_MODE_ECNVRAM: |
| if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) |
| return -EIO; |
| *status = lec; |
| return 0; |
| default: |
| return -ENXIO; |
| } |
| } |
| |
| /* call with brightness_mutex held! */ |
| /* do NOT call with illegal backlight level value */ |
| static int tpacpi_brightness_set_ec(unsigned int value) |
| { |
| u8 lec = 0; |
| |
| if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) |
| return -EIO; |
| |
| if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, |
| (lec & TP_EC_BACKLIGHT_CMDMSK) | |
| (value & TP_EC_BACKLIGHT_LVLMSK)))) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| /* call with brightness_mutex held! */ |
| static int tpacpi_brightness_set_ucmsstep(unsigned int value) |
| { |
| int cmos_cmd, inc; |
| unsigned int current_value, i; |
| |
| current_value = tpacpi_brightness_nvram_get(); |
| |
| if (value == current_value) |
| return 0; |
| |
| cmos_cmd = (value > current_value) ? |
| TP_CMOS_BRIGHTNESS_UP : |
| TP_CMOS_BRIGHTNESS_DOWN; |
| inc = (value > current_value) ? 1 : -1; |
| |
| for (i = current_value; i != value; i += inc) |
| if (issue_thinkpad_cmos_command(cmos_cmd)) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| /* May return EINTR which can always be mapped to ERESTARTSYS */ |
| static int brightness_set(unsigned int value) |
| { |
| int res; |
| |
| if (value > bright_maxlvl) |
| return -EINVAL; |
| |
| vdbg_printk(TPACPI_DBG_BRGHT, |
| "set backlight level to %d\n", value); |
| |
| res = mutex_lock_killable(&brightness_mutex); |
| if (res < 0) |
| return res; |
| |
| switch (brightness_mode) { |
| case TPACPI_BRGHT_MODE_EC: |
| case TPACPI_BRGHT_MODE_ECNVRAM: |
| res = tpacpi_brightness_set_ec(value); |
| break; |
| case TPACPI_BRGHT_MODE_UCMS_STEP: |
| res = tpacpi_brightness_set_ucmsstep(value); |
| break; |
| default: |
| res = -ENXIO; |
| } |
| |
| mutex_unlock(&brightness_mutex); |
| return res; |
| } |
| |
| /* sysfs backlight class ----------------------------------------------- */ |
| |
| static int brightness_update_status(struct backlight_device *bd) |
| { |
| unsigned int level = |
| (bd->props.fb_blank == FB_BLANK_UNBLANK && |
| bd->props.power == FB_BLANK_UNBLANK) ? |
| bd->props.brightness : 0; |
| |
| dbg_printk(TPACPI_DBG_BRGHT, |
| "backlight: attempt to set level to %d\n", |
| level); |
| |
| /* it is the backlight class's job (caller) to handle |
| * EINTR and other errors properly */ |
| return brightness_set(level); |
| } |
| |
| static int brightness_get(struct backlight_device *bd) |
| { |
| int status, res; |
| |
| res = mutex_lock_killable(&brightness_mutex); |
| if (res < 0) |
| return 0; |
| |
| res = tpacpi_brightness_get_raw(&status); |
| |
| mutex_unlock(&brightness_mutex); |
| |
| if (res < 0) |
| return 0; |
| |
| return status & TP_EC_BACKLIGHT_LVLMSK; |
| } |
| |
| static void tpacpi_brightness_notify_change(void) |
| { |
| backlight_force_update(ibm_backlight_device, |
| BACKLIGHT_UPDATE_HOTKEY); |
| } |
| |
| static const struct backlight_ops ibm_backlight_data = { |
| .get_brightness = brightness_get, |
| .update_status = brightness_update_status, |
| }; |
| |
| /* --------------------------------------------------------------------- */ |
| |
| /* |
| * Call _BCL method of video device. On some ThinkPads this will |
| * switch the firmware to the ACPI brightness control mode. |
| */ |
| |
| static int __init tpacpi_query_bcl_levels(acpi_handle handle) |
| { |
| struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| union acpi_object *obj; |
| struct acpi_device *device, *child; |
| int rc; |
| |
| if (acpi_bus_get_device(handle, &device)) |
| return 0; |
| |
| rc = 0; |
| list_for_each_entry(child, &device->children, node) { |
| acpi_status status = acpi_evaluate_object(child->handle, "_BCL", |
| NULL, &buffer); |
| if (ACPI_FAILURE(status)) |
| continue; |
| |
| obj = (union acpi_object *)buffer.pointer; |
| if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
| pr_err("Unknown _BCL data, please report this to %s\n", |
| TPACPI_MAIL); |
| rc = 0; |
| } else { |
| rc = obj->package.count; |
| } |
| break; |
| } |
| |
| kfree(buffer.pointer); |
| return rc; |
| } |
| |
| |
| /* |
| * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map |
| */ |
| static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) |
| { |
| acpi_handle video_device; |
| int bcl_levels = 0; |
| |
| tpacpi_acpi_handle_locate("video", NULL, &video_device); |
| if (video_device) |
| bcl_levels = tpacpi_query_bcl_levels(video_device); |
| |
| tp_features.bright_acpimode = (bcl_levels > 0); |
| |
| return (bcl_levels > 2) ? (bcl_levels - 2) : 0; |
| } |
| |
| /* |
| * These are only useful for models that have only one possibility |
| * of GPU. If the BIOS model handles both ATI and Intel, don't use |
| * these quirks. |
| */ |
| #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ |
| #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ |
| #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ |
| |
| static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { |
| /* Models with ATI GPUs known to require ECNVRAM mode */ |
| TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ |
| |
| /* Models with ATI GPUs that can use ECNVRAM */ |
| TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ |
| TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), |
| TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ |
| TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), |
| |
| /* Models with Intel Extreme Graphics 2 */ |
| TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ |
| TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), |
| TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), |
| |
| /* Models with Intel GMA900 */ |
| TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ |
| TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ |
| TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ |
| }; |
| |
| /* |
| * Returns < 0 for error, otherwise sets tp_features.bright_* |
| * and bright_maxlvl. |
| */ |
| static void __init tpacpi_detect_brightness_capabilities(void) |
| { |
| unsigned int b; |
| |
| vdbg_printk(TPACPI_DBG_INIT, |
| "detecting firmware brightness interface capabilities\n"); |
| |
| /* we could run a quirks check here (same table used by |
| * brightness_init) if needed */ |
| |
| /* |
| * We always attempt to detect acpi support, so as to switch |
| * Lenovo Vista BIOS to ACPI brightness mode even if we are not |
| * going to publish a backlight interface |
| */ |
| b = tpacpi_check_std_acpi_brightness_support(); |
| switch (b) { |
| case 16: |
| bright_maxlvl = 15; |
| break; |
| case 8: |
| case 0: |
| bright_maxlvl = 7; |
| break; |
| default: |
| tp_features.bright_unkfw = 1; |
| bright_maxlvl = b - 1; |
| } |
| pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); |
| } |
| |
| static int __init brightness_init(struct ibm_init_struct *iibm) |
| { |
| struct backlight_properties props; |
| int b; |
| unsigned long quirks; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); |
| |
| mutex_init(&brightness_mutex); |
| |
| quirks = tpacpi_check_quirks(brightness_quirk_table, |
| ARRAY_SIZE(brightness_quirk_table)); |
| |
| /* tpacpi_detect_brightness_capabilities() must have run already */ |
| |
| /* if it is unknown, we don't handle it: it wouldn't be safe */ |
| if (tp_features.bright_unkfw) |
| return 1; |
| |
| if (!brightness_enable) { |
| dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, |
| "brightness support disabled by " |
| "module parameter\n"); |
| return 1; |
| } |
| |
| if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { |
| if (brightness_enable > 1) { |
| pr_info("Standard ACPI backlight interface " |
| "available, not loading native one\n"); |
| return 1; |
| } else if (brightness_enable == 1) { |
| pr_warn("Cannot enable backlight brightness support, " |
| "ACPI is already handling it. Refer to the " |
| "acpi_backlight kernel parameter.\n"); |
| return 1; |
| } |
| } else if (tp_features.bright_acpimode && brightness_enable > 1) { |
| pr_notice("Standard ACPI backlight interface not " |
| "available, thinkpad_acpi native " |
| "brightness control enabled\n"); |
| } |
| |
| /* |
| * Check for module parameter bogosity, note that we |
| * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be |
| * able to detect "unspecified" |
| */ |
| if (brightness_mode > TPACPI_BRGHT_MODE_MAX) |
| return -EINVAL; |
| |
| /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ |
| if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || |
| brightness_mode == TPACPI_BRGHT_MODE_MAX) { |
| if (quirks & TPACPI_BRGHT_Q_EC) |
| brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; |
| else |
| brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; |
| |
| dbg_printk(TPACPI_DBG_BRGHT, |
| "driver auto-selected brightness_mode=%d\n", |
| brightness_mode); |
| } |
| |
| /* Safety */ |
| if (!tpacpi_is_ibm() && |
| (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || |
| brightness_mode == TPACPI_BRGHT_MODE_EC)) |
| return -EINVAL; |
| |
| if (tpacpi_brightness_get_raw(&b) < 0) |
| return 1; |
| |
| memset(&props, 0, sizeof(struct backlight_properties)); |
| props.type = BACKLIGHT_PLATFORM; |
| props.max_brightness = bright_maxlvl; |
| props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; |
| ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, |
| NULL, NULL, |
| &ibm_backlight_data, |
| &props); |
| if (IS_ERR(ibm_backlight_device)) { |
| int rc = PTR_ERR(ibm_backlight_device); |
| ibm_backlight_device = NULL; |
| pr_err("Could not register backlight device\n"); |
| return rc; |
| } |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, |
| "brightness is supported\n"); |
| |
| if (quirks & TPACPI_BRGHT_Q_ASK) { |
| pr_notice("brightness: will use unverified default: " |
| "brightness_mode=%d\n", brightness_mode); |
| pr_notice("brightness: please report to %s whether it works well " |
| "or not on your ThinkPad\n", TPACPI_MAIL); |
| } |
| |
| /* Added by mistake in early 2007. Probably useless, but it could |
| * be working around some unknown firmware problem where the value |
| * read at startup doesn't match the real hardware state... so leave |
| * it in place just in case */ |
| backlight_update_status(ibm_backlight_device); |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, |
| "brightness: registering brightness hotkeys " |
| "as change notification\n"); |
| tpacpi_hotkey_driver_mask_set(hotkey_driver_mask |
| | TP_ACPI_HKEY_BRGHTUP_MASK |
| | TP_ACPI_HKEY_BRGHTDWN_MASK); |
| return 0; |
| } |
| |
| static void brightness_suspend(void) |
| { |
| tpacpi_brightness_checkpoint_nvram(); |
| } |
| |
| static void brightness_shutdown(void) |
| { |
| tpacpi_brightness_checkpoint_nvram(); |
| } |
| |
| static void brightness_exit(void) |
| { |
| if (ibm_backlight_device) { |
| vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, |
| "calling backlight_device_unregister()\n"); |
| backlight_device_unregister(ibm_backlight_device); |
| } |
| |
| tpacpi_brightness_checkpoint_nvram(); |
| } |
| |
| static int brightness_read(struct seq_file *m) |
| { |
| int level; |
| |
| level = brightness_get(NULL); |
| if (level < 0) { |
| seq_printf(m, "level:\t\tunreadable\n"); |
| } else { |
| seq_printf(m, "level:\t\t%d\n", level); |
| seq_printf(m, "commands:\tup, down\n"); |
| seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", |
| bright_maxlvl); |
| } |
| |
| return 0; |
| } |
| |
| static int brightness_write(char *buf) |
| { |
| int level; |
| int rc; |
| char *cmd; |
| |
| level = brightness_get(NULL); |
| if (level < 0) |
| return level; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "up") == 0) { |
| if (level < bright_maxlvl) |
| level++; |
| } else if (strlencmp(cmd, "down") == 0) { |
| if (level > 0) |
| level--; |
| } else if (sscanf(cmd, "level %d", &level) == 1 && |
| level >= 0 && level <= bright_maxlvl) { |
| /* new level set */ |
| } else |
| return -EINVAL; |
| } |
| |
| tpacpi_disclose_usertask("procfs brightness", |
| "set level to %d\n", level); |
| |
| /* |
| * Now we know what the final level should be, so we try to set it. |
| * Doing it this way makes the syscall restartable in case of EINTR |
| */ |
| rc = brightness_set(level); |
| if (!rc && ibm_backlight_device) |
| backlight_force_update(ibm_backlight_device, |
| BACKLIGHT_UPDATE_SYSFS); |
| return (rc == -EINTR) ? -ERESTARTSYS : rc; |
| } |
| |
| static struct ibm_struct brightness_driver_data = { |
| .name = "brightness", |
| .read = brightness_read, |
| .write = brightness_write, |
| .exit = brightness_exit, |
| .suspend = brightness_suspend, |
| .shutdown = brightness_shutdown, |
| }; |
| |
| /************************************************************************* |
| * Volume subdriver |
| */ |
| |
| /* |
| * IBM ThinkPads have a simple volume controller with MUTE gating. |
| * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. |
| * |
| * Since the *61 series (and probably also the later *60 series), Lenovo |
| * ThinkPads only implement the MUTE gate. |
| * |
| * EC register 0x30 |
| * Bit 6: MUTE (1 mutes sound) |
| * Bit 3-0: Volume |
| * Other bits should be zero as far as we know. |
| * |
| * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and |
| * bits 3-0 (volume). Other bits in NVRAM may have other functions, |
| * such as bit 7 which is used to detect repeated presses of MUTE, |
| * and we leave them unchanged. |
| * |
| * On newer Lenovo ThinkPads, the EC can automatically change the volume |
| * in response to user input. Unfortunately, this rarely works well. |
| * The laptop changes the state of its internal MUTE gate and, on some |
| * models, sends KEY_MUTE, causing any user code that responds to the |
| * mute button to get confused. The hardware MUTE gate is also |
| * unnecessary, since user code can handle the mute button without |
| * kernel or EC help. |
| * |
| * To avoid confusing userspace, we simply disable all EC-based mute |
| * and volume controls when possible. |
| */ |
| |
| #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT |
| |
| #define TPACPI_ALSA_DRVNAME "ThinkPad EC" |
| #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" |
| #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME |
| |
| #if SNDRV_CARDS <= 32 |
| #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) |
| #else |
| #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) |
| #endif |
| static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ |
| static char *alsa_id = "ThinkPadEC"; |
| static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; |
| |
| struct tpacpi_alsa_data { |
| struct snd_card *card; |
| struct snd_ctl_elem_id *ctl_mute_id; |
| struct snd_ctl_elem_id *ctl_vol_id; |
| }; |
| |
| static struct snd_card *alsa_card; |
| |
| enum { |
| TP_EC_AUDIO = 0x30, |
| |
| /* TP_EC_AUDIO bits */ |
| TP_EC_AUDIO_MUTESW = 6, |
| |
| /* TP_EC_AUDIO bitmasks */ |
| TP_EC_AUDIO_LVL_MSK = 0x0F, |
| TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), |
| |
| /* Maximum volume */ |
| TP_EC_VOLUME_MAX = 14, |
| }; |
| |
| enum tpacpi_volume_access_mode { |
| TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ |
| TPACPI_VOL_MODE_EC, /* Pure EC control */ |
| TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ |
| TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ |
| TPACPI_VOL_MODE_MAX |
| }; |
| |
| enum tpacpi_volume_capabilities { |
| TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ |
| TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ |
| TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ |
| TPACPI_VOL_CAP_MAX |
| }; |
| |
| enum tpacpi_mute_btn_mode { |
| TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ |
| /* We don't know what mode 1 is. */ |
| TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ |
| TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ |
| }; |
| |
| static enum tpacpi_volume_access_mode volume_mode = |
| TPACPI_VOL_MODE_MAX; |
| |
| static enum tpacpi_volume_capabilities volume_capabilities; |
| static bool volume_control_allowed; |
| static bool software_mute_requested = true; |
| static bool software_mute_active; |
| static int software_mute_orig_mode; |
| |
| /* |
| * Used to syncronize writers to TP_EC_AUDIO and |
| * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write |
| */ |
| static struct mutex volume_mutex; |
| |
| static void tpacpi_volume_checkpoint_nvram(void) |
| { |
| u8 lec = 0; |
| u8 b_nvram; |
| u8 ec_mask; |
| |
| if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) |
| return; |
| if (!volume_control_allowed) |
| return; |
| if (software_mute_active) |
| return; |
| |
| vdbg_printk(TPACPI_DBG_MIXER, |
| "trying to checkpoint mixer state to NVRAM...\n"); |
| |
| if (tp_features.mixer_no_level_control) |
| ec_mask = TP_EC_AUDIO_MUTESW_MSK; |
| else |
| ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; |
| |
| if (mutex_lock_killable(&volume_mutex) < 0) |
| return; |
| |
| if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) |
| goto unlock; |
| lec &= ec_mask; |
| b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); |
| |
| if (lec != (b_nvram & ec_mask)) { |
| /* NVRAM needs update */ |
| b_nvram &= ~ec_mask; |
| b_nvram |= lec; |
| nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); |
| dbg_printk(TPACPI_DBG_MIXER, |
| "updated NVRAM mixer status to 0x%02x (0x%02x)\n", |
| (unsigned int) lec, (unsigned int) b_nvram); |
| } else { |
| vdbg_printk(TPACPI_DBG_MIXER, |
| "NVRAM mixer status already is 0x%02x (0x%02x)\n", |
| (unsigned int) lec, (unsigned int) b_nvram); |
| } |
| |
| unlock: |
| mutex_unlock(&volume_mutex); |
| } |
| |
| static int volume_get_status_ec(u8 *status) |
| { |
| u8 s; |
| |
| if (!acpi_ec_read(TP_EC_AUDIO, &s)) |
| return -EIO; |
| |
| *status = s; |
| |
| dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); |
| |
| return 0; |
| } |
| |
| static int volume_get_status(u8 *status) |
| { |
| return volume_get_status_ec(status); |
| } |
| |
| static int volume_set_status_ec(const u8 status) |
| { |
| if (!acpi_ec_write(TP_EC_AUDIO, status)) |
| return -EIO; |
| |
| dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); |
| |
| /* |
| * On X200s, and possibly on others, it can take a while for |
| * reads to become correct. |
| */ |
| msleep(1); |
| |
| return 0; |
| } |
| |
| static int volume_set_status(const u8 status) |
| { |
| return volume_set_status_ec(status); |
| } |
| |
| /* returns < 0 on error, 0 on no change, 1 on change */ |
| static int __volume_set_mute_ec(const bool mute) |
| { |
| int rc; |
| u8 s, n; |
| |
| if (mutex_lock_killable(&volume_mutex) < 0) |
| return -EINTR; |
| |
| rc = volume_get_status_ec(&s); |
| if (rc) |
| goto unlock; |
| |
| n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : |
| s & ~TP_EC_AUDIO_MUTESW_MSK; |
| |
| if (n != s) { |
| rc = volume_set_status_ec(n); |
| if (!rc) |
| rc = 1; |
| } |
| |
| unlock: |
| mutex_unlock(&volume_mutex); |
| return rc; |
| } |
| |
| static int volume_alsa_set_mute(const bool mute) |
| { |
| dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", |
| (mute) ? "" : "un"); |
| return __volume_set_mute_ec(mute); |
| } |
| |
| static int volume_set_mute(const bool mute) |
| { |
| int rc; |
| |
| dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", |
| (mute) ? "" : "un"); |
| |
| rc = __volume_set_mute_ec(mute); |
| return (rc < 0) ? rc : 0; |
| } |
| |
| /* returns < 0 on error, 0 on no change, 1 on change */ |
| static int __volume_set_volume_ec(const u8 vol) |
| { |
| int rc; |
| u8 s, n; |
| |
| if (vol > TP_EC_VOLUME_MAX) |
| return -EINVAL; |
| |
| if (mutex_lock_killable(&volume_mutex) < 0) |
| return -EINTR; |
| |
| rc = volume_get_status_ec(&s); |
| if (rc) |
| goto unlock; |
| |
| n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; |
| |
| if (n != s) { |
| rc = volume_set_status_ec(n); |
| if (!rc) |
| rc = 1; |
| } |
| |
| unlock: |
| mutex_unlock(&volume_mutex); |
| return rc; |
| } |
| |
| static int volume_set_software_mute(bool startup) |
| { |
| int result; |
| |
| if (!tpacpi_is_lenovo()) |
| return -ENODEV; |
| |
| if (startup) { |
| if (!acpi_evalf(ec_handle, &software_mute_orig_mode, |
| "HAUM", "qd")) |
| return -EIO; |
| |
| dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, |
| "Initial HAUM setting was %d\n", |
| software_mute_orig_mode); |
| } |
| |
| if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", |
| (int)TP_EC_MUTE_BTN_NONE)) |
| return -EIO; |
| |
| if (result != TP_EC_MUTE_BTN_NONE) |
| pr_warn("Unexpected SAUM result %d\n", |
| result); |
| |
| /* |
| * In software mute mode, the standard codec controls take |
| * precendence, so we unmute the ThinkPad HW switch at |
| * startup. Just on case there are SAUM-capable ThinkPads |
| * with level controls, set max HW volume as well. |
| */ |
| if (tp_features.mixer_no_level_control) |
| result = volume_set_mute(false); |
| else |
| result = volume_set_status(TP_EC_VOLUME_MAX); |
| |
| if (result != 0) |
| pr_warn("Failed to unmute the HW mute switch\n"); |
| |
| return 0; |
| } |
| |
| static void volume_exit_software_mute(void) |
| { |
| int r; |
| |
| if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) |
| || r != software_mute_orig_mode) |
| pr_warn("Failed to restore mute mode\n"); |
| } |
| |
| static int volume_alsa_set_volume(const u8 vol) |
| { |
| dbg_printk(TPACPI_DBG_MIXER, |
| "ALSA: trying to set volume level to %hu\n", vol); |
| return __volume_set_volume_ec(vol); |
| } |
| |
| static void volume_alsa_notify_change(void) |
| { |
| struct tpacpi_alsa_data *d; |
| |
| if (alsa_card && alsa_card->private_data) { |
| d = alsa_card->private_data; |
| if (d->ctl_mute_id) |
| snd_ctl_notify(alsa_card, |
| SNDRV_CTL_EVENT_MASK_VALUE, |
| d->ctl_mute_id); |
| if (d->ctl_vol_id) |
| snd_ctl_notify(alsa_card, |
| SNDRV_CTL_EVENT_MASK_VALUE, |
| d->ctl_vol_id); |
| } |
| } |
| |
| static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| uinfo->count = 1; |
| uinfo->value.integer.min = 0; |
| uinfo->value.integer.max = TP_EC_VOLUME_MAX; |
| return 0; |
| } |
| |
| static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| u8 s; |
| int rc; |
| |
| rc = volume_get_status(&s); |
| if (rc < 0) |
| return rc; |
| |
| ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; |
| return 0; |
| } |
| |
| static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", |
| ucontrol->value.integer.value[0]); |
| return volume_alsa_set_volume(ucontrol->value.integer.value[0]); |
| } |
| |
| #define volume_alsa_mute_info snd_ctl_boolean_mono_info |
| |
| static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| u8 s; |
| int rc; |
| |
| rc = volume_get_status(&s); |
| if (rc < 0) |
| return rc; |
| |
| ucontrol->value.integer.value[0] = |
| (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; |
| return 0; |
| } |
| |
| static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| tpacpi_disclose_usertask("ALSA", "%smute\n", |
| ucontrol->value.integer.value[0] ? |
| "un" : ""); |
| return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); |
| } |
| |
| static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { |
| .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| .name = "Console Playback Volume", |
| .index = 0, |
| .access = SNDRV_CTL_ELEM_ACCESS_READ, |
| .info = volume_alsa_vol_info, |
| .get = volume_alsa_vol_get, |
| }; |
| |
| static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { |
| .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| .name = "Console Playback Switch", |
| .index = 0, |
| .access = SNDRV_CTL_ELEM_ACCESS_READ, |
| .info = volume_alsa_mute_info, |
| .get = volume_alsa_mute_get, |
| }; |
| |
| static void volume_suspend(void) |
| { |
| tpacpi_volume_checkpoint_nvram(); |
| } |
| |
| static void volume_resume(void) |
| { |
| if (software_mute_active) { |
| if (volume_set_software_mute(false) < 0) |
| pr_warn("Failed to restore software mute\n"); |
| } else { |
| volume_alsa_notify_change(); |
| } |
| } |
| |
| static void volume_shutdown(void) |
| { |
| tpacpi_volume_checkpoint_nvram(); |
| } |
| |
| static void volume_exit(void) |
| { |
| if (alsa_card) { |
| snd_card_free(alsa_card); |
| alsa_card = NULL; |
| } |
| |
| tpacpi_volume_checkpoint_nvram(); |
| |
| if (software_mute_active) |
| volume_exit_software_mute(); |
| } |
| |
| static int __init volume_create_alsa_mixer(void) |
| { |
| struct snd_card *card; |
| struct tpacpi_alsa_data *data; |
| struct snd_kcontrol *ctl_vol; |
| struct snd_kcontrol *ctl_mute; |
| int rc; |
| |
| rc = snd_card_new(&tpacpi_pdev->dev, |
| alsa_index, alsa_id, THIS_MODULE, |
| sizeof(struct tpacpi_alsa_data), &card); |
| if (rc < 0 || !card) { |
| pr_err("Failed to create ALSA card structures: %d\n", rc); |
| return 1; |
| } |
| |
| BUG_ON(!card->private_data); |
| data = card->private_data; |
| data->card = card; |
| |
| strlcpy(card->driver, TPACPI_ALSA_DRVNAME, |
| sizeof(card->driver)); |
| strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, |
| sizeof(card->shortname)); |
| snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", |
| (thinkpad_id.ec_version_str) ? |
| thinkpad_id.ec_version_str : "(unknown)"); |
| snprintf(card->longname, sizeof(card->longname), |
| "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, |
| (thinkpad_id.ec_version_str) ? |
| thinkpad_id.ec_version_str : "unknown"); |
| |
| if (volume_control_allowed) { |
| volume_alsa_control_vol.put = volume_alsa_vol_put; |
| volume_alsa_control_vol.access = |
| SNDRV_CTL_ELEM_ACCESS_READWRITE; |
| |
| volume_alsa_control_mute.put = volume_alsa_mute_put; |
| volume_alsa_control_mute.access = |
| SNDRV_CTL_ELEM_ACCESS_READWRITE; |
| } |
| |
| if (!tp_features.mixer_no_level_control) { |
| ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); |
| rc = snd_ctl_add(card, ctl_vol); |
| if (rc < 0) { |
| pr_err("Failed to create ALSA volume control: %d\n", |
| rc); |
| goto err_exit; |
| } |
| data->ctl_vol_id = &ctl_vol->id; |
| } |
| |
| ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); |
| rc = snd_ctl_add(card, ctl_mute); |
| if (rc < 0) { |
| pr_err("Failed to create ALSA mute control: %d\n", rc); |
| goto err_exit; |
| } |
| data->ctl_mute_id = &ctl_mute->id; |
| |
| rc = snd_card_register(card); |
| if (rc < 0) { |
| pr_err("Failed to register ALSA card: %d\n", rc); |
| goto err_exit; |
| } |
| |
| alsa_card = card; |
| return 0; |
| |
| err_exit: |
| snd_card_free(card); |
| return 1; |
| } |
| |
| #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ |
| #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ |
| |
| static const struct tpacpi_quirk volume_quirk_table[] __initconst = { |
| /* Whitelist volume level on all IBM by default */ |
| { .vendor = PCI_VENDOR_ID_IBM, |
| .bios = TPACPI_MATCH_ANY, |
| .ec = TPACPI_MATCH_ANY, |
| .quirks = TPACPI_VOL_Q_LEVEL }, |
| |
| /* Lenovo models with volume control (needs confirmation) */ |
| TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ |
| TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ |
| TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ |
| TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ |
| TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ |
| TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ |
| TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ |
| |
| /* Whitelist mute-only on all Lenovo by default */ |
| { .vendor = PCI_VENDOR_ID_LENOVO, |
| .bios = TPACPI_MATCH_ANY, |
| .ec = TPACPI_MATCH_ANY, |
| .quirks = TPACPI_VOL_Q_MUTEONLY } |
| }; |
| |
| static int __init volume_init(struct ibm_init_struct *iibm) |
| { |
| unsigned long quirks; |
| int rc; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); |
| |
| mutex_init(&volume_mutex); |
| |
| /* |
| * Check for module parameter bogosity, note that we |
| * init volume_mode to TPACPI_VOL_MODE_MAX in order to be |
| * able to detect "unspecified" |
| */ |
| if (volume_mode > TPACPI_VOL_MODE_MAX) |
| return -EINVAL; |
| |
| if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { |
| pr_err("UCMS step volume mode not implemented, " |
| "please contact %s\n", TPACPI_MAIL); |
| return 1; |
| } |
| |
| if (volume_capabilities >= TPACPI_VOL_CAP_MAX) |
| return -EINVAL; |
| |
| /* |
| * The ALSA mixer is our primary interface. |
| * When disabled, don't install the subdriver at all |
| */ |
| if (!alsa_enable) { |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, |
| "ALSA mixer disabled by parameter, " |
| "not loading volume subdriver...\n"); |
| return 1; |
| } |
| |
| quirks = tpacpi_check_quirks(volume_quirk_table, |
| ARRAY_SIZE(volume_quirk_table)); |
| |
| switch (volume_capabilities) { |
| case TPACPI_VOL_CAP_AUTO: |
| if (quirks & TPACPI_VOL_Q_MUTEONLY) |
| tp_features.mixer_no_level_control = 1; |
| else if (quirks & TPACPI_VOL_Q_LEVEL) |
| tp_features.mixer_no_level_control = 0; |
| else |
| return 1; /* no mixer */ |
| break; |
| case TPACPI_VOL_CAP_VOLMUTE: |
| tp_features.mixer_no_level_control = 0; |
| break; |
| case TPACPI_VOL_CAP_MUTEONLY: |
| tp_features.mixer_no_level_control = 1; |
| break; |
| default: |
| return 1; |
| } |
| |
| if (volume_capabilities != TPACPI_VOL_CAP_AUTO) |
| dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, |
| "using user-supplied volume_capabilities=%d\n", |
| volume_capabilities); |
| |
| if (volume_mode == TPACPI_VOL_MODE_AUTO || |
| volume_mode == TPACPI_VOL_MODE_MAX) { |
| volume_mode = TPACPI_VOL_MODE_ECNVRAM; |
| |
| dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, |
| "driver auto-selected volume_mode=%d\n", |
| volume_mode); |
| } else { |
| dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, |
| "using user-supplied volume_mode=%d\n", |
| volume_mode); |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, |
| "mute is supported, volume control is %s\n", |
| str_supported(!tp_features.mixer_no_level_control)); |
| |
| if (software_mute_requested && volume_set_software_mute(true) == 0) { |
| software_mute_active = true; |
| } else { |
| rc = volume_create_alsa_mixer(); |
| if (rc) { |
| pr_err("Could not create the ALSA mixer interface\n"); |
| return rc; |
| } |
| |
| pr_info("Console audio control enabled, mode: %s\n", |
| (volume_control_allowed) ? |
| "override (read/write)" : |
| "monitor (read only)"); |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, |
| "registering volume hotkeys as change notification\n"); |
| tpacpi_hotkey_driver_mask_set(hotkey_driver_mask |
| | TP_ACPI_HKEY_VOLUP_MASK |
| | TP_ACPI_HKEY_VOLDWN_MASK |
| | TP_ACPI_HKEY_MUTE_MASK); |
| |
| return 0; |
| } |
| |
| static int volume_read(struct seq_file *m) |
| { |
| u8 status; |
| |
| if (volume_get_status(&status) < 0) { |
| seq_printf(m, "level:\t\tunreadable\n"); |
| } else { |
| if (tp_features.mixer_no_level_control) |
| seq_printf(m, "level:\t\tunsupported\n"); |
| else |
| seq_printf(m, "level:\t\t%d\n", |
| status & TP_EC_AUDIO_LVL_MSK); |
| |
| seq_printf(m, "mute:\t\t%s\n", |
| onoff(status, TP_EC_AUDIO_MUTESW)); |
| |
| if (volume_control_allowed) { |
| seq_printf(m, "commands:\tunmute, mute\n"); |
| if (!tp_features.mixer_no_level_control) { |
| seq_printf(m, |
| "commands:\tup, down\n"); |
| seq_printf(m, |
| "commands:\tlevel <level>" |
| " (<level> is 0-%d)\n", |
| TP_EC_VOLUME_MAX); |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int volume_write(char *buf) |
| { |
| u8 s; |
| u8 new_level, new_mute; |
| int l; |
| char *cmd; |
| int rc; |
| |
| /* |
| * We do allow volume control at driver startup, so that the |
| * user can set initial state through the volume=... parameter hack. |
| */ |
| if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { |
| if (unlikely(!tp_warned.volume_ctrl_forbidden)) { |
| tp_warned.volume_ctrl_forbidden = 1; |
| pr_notice("Console audio control in monitor mode, " |
| "changes are not allowed\n"); |
| pr_notice("Use the volume_control=1 module parameter " |
| "to enable volume control\n"); |
| } |
| return -EPERM; |
| } |
| |
| rc = volume_get_status(&s); |
| if (rc < 0) |
| return rc; |
| |
| new_level = s & TP_EC_AUDIO_LVL_MSK; |
| new_mute = s & TP_EC_AUDIO_MUTESW_MSK; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (!tp_features.mixer_no_level_control) { |
| if (strlencmp(cmd, "up") == 0) { |
| if (new_mute) |
| new_mute = 0; |
| else if (new_level < TP_EC_VOLUME_MAX) |
| new_level++; |
| continue; |
| } else if (strlencmp(cmd, "down") == 0) { |
| if (new_mute) |
| new_mute = 0; |
| else if (new_level > 0) |
| new_level--; |
| continue; |
| } else if (sscanf(cmd, "level %u", &l) == 1 && |
| l >= 0 && l <= TP_EC_VOLUME_MAX) { |
| new_level = l; |
| continue; |
| } |
| } |
| if (strlencmp(cmd, "mute") == 0) |
| new_mute = TP_EC_AUDIO_MUTESW_MSK; |
| else if (strlencmp(cmd, "unmute") == 0) |
| new_mute = 0; |
| else |
| return -EINVAL; |
| } |
| |
| if (tp_features.mixer_no_level_control) { |
| tpacpi_disclose_usertask("procfs volume", "%smute\n", |
| new_mute ? "" : "un"); |
| rc = volume_set_mute(!!new_mute); |
| } else { |
| tpacpi_disclose_usertask("procfs volume", |
| "%smute and set level to %d\n", |
| new_mute ? "" : "un", new_level); |
| rc = volume_set_status(new_mute | new_level); |
| } |
| volume_alsa_notify_change(); |
| |
| return (rc == -EINTR) ? -ERESTARTSYS : rc; |
| } |
| |
| static struct ibm_struct volume_driver_data = { |
| .name = "volume", |
| .read = volume_read, |
| .write = volume_write, |
| .exit = volume_exit, |
| .suspend = volume_suspend, |
| .resume = volume_resume, |
| .shutdown = volume_shutdown, |
| }; |
| |
| #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ |
| |
| #define alsa_card NULL |
| |
| static void inline volume_alsa_notify_change(void) |
| { |
| } |
| |
| static int __init volume_init(struct ibm_init_struct *iibm) |
| { |
| pr_info("volume: disabled as there is no ALSA support in this kernel\n"); |
| |
| return 1; |
| } |
| |
| static struct ibm_struct volume_driver_data = { |
| .name = "volume", |
| }; |
| |
| #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ |
| |
| /************************************************************************* |
| * Fan subdriver |
| */ |
| |
| /* |
| * FAN ACCESS MODES |
| * |
| * TPACPI_FAN_RD_ACPI_GFAN: |
| * ACPI GFAN method: returns fan level |
| * |
| * see TPACPI_FAN_WR_ACPI_SFAN |
| * EC 0x2f (HFSP) not available if GFAN exists |
| * |
| * TPACPI_FAN_WR_ACPI_SFAN: |
| * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) |
| * |
| * EC 0x2f (HFSP) might be available *for reading*, but do not use |
| * it for writing. |
| * |
| * TPACPI_FAN_WR_TPEC: |
| * ThinkPad EC register 0x2f (HFSP): fan control loop mode |
| * Supported on almost all ThinkPads |
| * |
| * Fan speed changes of any sort (including those caused by the |
| * disengaged mode) are usually done slowly by the firmware as the |
| * maximum amount of fan duty cycle change per second seems to be |
| * limited. |
| * |
| * Reading is not available if GFAN exists. |
| * Writing is not available if SFAN exists. |
| * |
| * Bits |
| * 7 automatic mode engaged; |
| * (default operation mode of the ThinkPad) |
| * fan level is ignored in this mode. |
| * 6 full speed mode (takes precedence over bit 7); |
| * not available on all thinkpads. May disable |
| * the tachometer while the fan controller ramps up |
| * the speed (which can take up to a few *minutes*). |
| * Speeds up fan to 100% duty-cycle, which is far above |
| * the standard RPM levels. It is not impossible that |
| * it could cause hardware damage. |
| * 5-3 unused in some models. Extra bits for fan level |
| * in others, but still useless as all values above |
| * 7 map to the same speed as level 7 in these models. |
| * 2-0 fan level (0..7 usually) |
| * 0x00 = stop |
| * 0x07 = max (set when temperatures critical) |
| * Some ThinkPads may have other levels, see |
| * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) |
| * |
| * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at |
| * boot. Apparently the EC does not initialize it, so unless ACPI DSDT |
| * does so, its initial value is meaningless (0x07). |
| * |
| * For firmware bugs, refer to: |
| * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues |
| * |
| * ---- |
| * |
| * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): |
| * Main fan tachometer reading (in RPM) |
| * |
| * This register is present on all ThinkPads with a new-style EC, and |
| * it is known not to be present on the A21m/e, and T22, as there is |
| * something else in offset 0x84 according to the ACPI DSDT. Other |
| * ThinkPads from this same time period (and earlier) probably lack the |
| * tachometer as well. |
| * |
| * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware |
| * was never fixed by IBM to report the EC firmware version string |
| * probably support the tachometer (like the early X models), so |
| * detecting it is quite hard. We need more data to know for sure. |
| * |
| * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings |
| * might result. |
| * |
| * FIRMWARE BUG: may go stale while the EC is switching to full speed |
| * mode. |
| * |
| * For firmware bugs, refer to: |
| * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues |
| * |
| * ---- |
| * |
| * ThinkPad EC register 0x31 bit 0 (only on select models) |
| * |
| * When bit 0 of EC register 0x31 is zero, the tachometer registers |
| * show the speed of the main fan. When bit 0 of EC register 0x31 |
| * is one, the tachometer registers show the speed of the auxiliary |
| * fan. |
| * |
| * Fan control seems to affect both fans, regardless of the state |
| * of this bit. |
| * |
| * So far, only the firmware for the X60/X61 non-tablet versions |
| * seem to support this (firmware TP-7M). |
| * |
| * TPACPI_FAN_WR_ACPI_FANS: |
| * ThinkPad X31, X40, X41. Not available in the X60. |
| * |
| * FANS ACPI handle: takes three arguments: low speed, medium speed, |
| * high speed. ACPI DSDT seems to map these three speeds to levels |
| * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH |
| * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") |
| * |
| * The speeds are stored on handles |
| * (FANA:FAN9), (FANC:FANB), (FANE:FAND). |
| * |
| * There are three default speed sets, accessible as handles: |
| * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H |
| * |
| * ACPI DSDT switches which set is in use depending on various |
| * factors. |
| * |
| * TPACPI_FAN_WR_TPEC is also available and should be used to |
| * command the fan. The X31/X40/X41 seems to have 8 fan levels, |
| * but the ACPI tables just mention level 7. |
| */ |
| |
| enum { /* Fan control constants */ |
| fan_status_offset = 0x2f, /* EC register 0x2f */ |
| fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) |
| * 0x84 must be read before 0x85 */ |
| fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) |
| bit 0 selects which fan is active */ |
| |
| TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ |
| TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ |
| |
| TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ |
| }; |
| |
| enum fan_status_access_mode { |
| TPACPI_FAN_NONE = 0, /* No fan status or control */ |
| TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ |
| TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ |
| }; |
| |
| enum fan_control_access_mode { |
| TPACPI_FAN_WR_NONE = 0, /* No fan control */ |
| TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ |
| TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ |
| TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ |
| }; |
| |
| enum fan_control_commands { |
| TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ |
| TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ |
| TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, |
| * and also watchdog cmd */ |
| }; |
| |
| static bool fan_control_allowed; |
| |
| static enum fan_status_access_mode fan_status_access_mode; |
| static enum fan_control_access_mode fan_control_access_mode; |
| static enum fan_control_commands fan_control_commands; |
| |
| static u8 fan_control_initial_status; |
| static u8 fan_control_desired_level; |
| static u8 fan_control_resume_level; |
| static int fan_watchdog_maxinterval; |
| |
| static struct mutex fan_mutex; |
| |
| static void fan_watchdog_fire(struct work_struct *ignored); |
| static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); |
| |
| TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ |
| TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ |
| "\\FSPD", /* 600e/x, 770e, 770x */ |
| ); /* all others */ |
| TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ |
| "JFNS", /* 770x-JL */ |
| ); /* all others */ |
| |
| /* |
| * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the |
| * HFSP register at boot, so it contains 0x07 but the Thinkpad could |
| * be in auto mode (0x80). |
| * |
| * This is corrected by any write to HFSP either by the driver, or |
| * by the firmware. |
| * |
| * We assume 0x07 really means auto mode while this quirk is active, |
| * as this is far more likely than the ThinkPad being in level 7, |
| * which is only used by the firmware during thermal emergencies. |
| * |
| * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), |
| * TP-70 (T43, R52), which are known to be buggy. |
| */ |
| |
| static void fan_quirk1_setup(void) |
| { |
| if (fan_control_initial_status == 0x07) { |
| pr_notice("fan_init: initial fan status is unknown, " |
| "assuming it is in auto mode\n"); |
| tp_features.fan_ctrl_status_undef = 1; |
| } |
| } |
| |
| static void fan_quirk1_handle(u8 *fan_status) |
| { |
| if (unlikely(tp_features.fan_ctrl_status_undef)) { |
| if (*fan_status != fan_control_initial_status) { |
| /* something changed the HFSP regisnter since |
| * driver init time, so it is not undefined |
| * anymore */ |
| tp_features.fan_ctrl_status_undef = 0; |
| } else { |
| /* Return most likely status. In fact, it |
| * might be the only possible status */ |
| *fan_status = TP_EC_FAN_AUTO; |
| } |
| } |
| } |
| |
| /* Select main fan on X60/X61, NOOP on others */ |
| static bool fan_select_fan1(void) |
| { |
| if (tp_features.second_fan) { |
| u8 val; |
| |
| if (ec_read(fan_select_offset, &val) < 0) |
| return false; |
| val &= 0xFEU; |
| if (ec_write(fan_select_offset, val) < 0) |
| return false; |
| } |
| return true; |
| } |
| |
| /* Select secondary fan on X60/X61 */ |
| static bool fan_select_fan2(void) |
| { |
| u8 val; |
| |
| if (!tp_features.second_fan) |
| return false; |
| |
| if (ec_read(fan_select_offset, &val) < 0) |
| return false; |
| val |= 0x01U; |
| if (ec_write(fan_select_offset, val) < 0) |
| return false; |
| |
| return true; |
| } |
| |
| /* |
| * Call with fan_mutex held |
| */ |
| static void fan_update_desired_level(u8 status) |
| { |
| if ((status & |
| (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { |
| if (status > 7) |
| fan_control_desired_level = 7; |
| else |
| fan_control_desired_level = status; |
| } |
| } |
| |
| static int fan_get_status(u8 *status) |
| { |
| u8 s; |
| |
| /* TODO: |
| * Add TPACPI_FAN_RD_ACPI_FANS ? */ |
| |
| switch (fan_status_access_mode) { |
| case TPACPI_FAN_RD_ACPI_GFAN: { |
| /* 570, 600e/x, 770e, 770x */ |
| int res; |
| |
| if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) |
| return -EIO; |
| |
| if (likely(status)) |
| *status = res & 0x07; |
| |
| break; |
| } |
| case TPACPI_FAN_RD_TPEC: |
| /* all except 570, 600e/x, 770e, 770x */ |
| if (unlikely(!acpi_ec_read(fan_status_offset, &s))) |
| return -EIO; |
| |
| if (likely(status)) { |
| *status = s; |
| fan_quirk1_handle(status); |
| } |
| |
| break; |
| |
| default: |
| return -ENXIO; |
| } |
| |
| return 0; |
| } |
| |
| static int fan_get_status_safe(u8 *status) |
| { |
| int rc; |
| u8 s; |
| |
| if (mutex_lock_killable(&fan_mutex)) |
| return -ERESTARTSYS; |
| rc = fan_get_status(&s); |
| if (!rc) |
| fan_update_desired_level(s); |
| mutex_unlock(&fan_mutex); |
| |
| if (status) |
| *status = s; |
| |
| return rc; |
| } |
| |
| static int fan_get_speed(unsigned int *speed) |
| { |
| u8 hi, lo; |
| |
| switch (fan_status_access_mode) { |
| case TPACPI_FAN_RD_TPEC: |
| /* all except 570, 600e/x, 770e, 770x */ |
| if (unlikely(!fan_select_fan1())) |
| return -EIO; |
| if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || |
| !acpi_ec_read(fan_rpm_offset + 1, &hi))) |
| return -EIO; |
| |
| if (likely(speed)) |
| *speed = (hi << 8) | lo; |
| |
| break; |
| |
| default: |
| return -ENXIO; |
| } |
| |
| return 0; |
| } |
| |
| static int fan2_get_speed(unsigned int *speed) |
| { |
| u8 hi, lo; |
| bool rc; |
| |
| switch (fan_status_access_mode) { |
| case TPACPI_FAN_RD_TPEC: |
| /* all except 570, 600e/x, 770e, 770x */ |
| if (unlikely(!fan_select_fan2())) |
| return -EIO; |
| rc = !acpi_ec_read(fan_rpm_offset, &lo) || |
| !acpi_ec_read(fan_rpm_offset + 1, &hi); |
| fan_select_fan1(); /* play it safe */ |
| if (rc) |
| return -EIO; |
| |
| if (likely(speed)) |
| *speed = (hi << 8) | lo; |
| |
| break; |
| |
| default: |
| return -ENXIO; |
| } |
| |
| return 0; |
| } |
| |
| static int fan_set_level(int level) |
| { |
| if (!fan_control_allowed) |
| return -EPERM; |
| |
| switch (fan_control_access_mode) { |
| case TPACPI_FAN_WR_ACPI_SFAN: |
| if (level >= 0 && level <= 7) { |
| if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) |
| return -EIO; |
| } else |
| return -EINVAL; |
| break; |
| |
| case TPACPI_FAN_WR_ACPI_FANS: |
| case TPACPI_FAN_WR_TPEC: |
| if (!(level & TP_EC_FAN_AUTO) && |
| !(level & TP_EC_FAN_FULLSPEED) && |
| ((level < 0) || (level > 7))) |
| return -EINVAL; |
| |
| /* safety net should the EC not support AUTO |
| * or FULLSPEED mode bits and just ignore them */ |
| if (level & TP_EC_FAN_FULLSPEED) |
| level |= 7; /* safety min speed 7 */ |
| else if (level & TP_EC_FAN_AUTO) |
| level |= 4; /* safety min speed 4 */ |
| |
| if (!acpi_ec_write(fan_status_offset, level)) |
| return -EIO; |
| else |
| tp_features.fan_ctrl_status_undef = 0; |
| break; |
| |
| default: |
| return -ENXIO; |
| } |
| |
| vdbg_printk(TPACPI_DBG_FAN, |
| "fan control: set fan control register to 0x%02x\n", level); |
| return 0; |
| } |
| |
| static int fan_set_level_safe(int level) |
| { |
| int rc; |
| |
| if (!fan_control_allowed) |
| return -EPERM; |
| |
| if (mutex_lock_killable(&fan_mutex)) |
| return -ERESTARTSYS; |
| |
| if (level == TPACPI_FAN_LAST_LEVEL) |
| level = fan_control_desired_level; |
| |
| rc = fan_set_level(level); |
| if (!rc) |
| fan_update_desired_level(level); |
| |
| mutex_unlock(&fan_mutex); |
| return rc; |
| } |
| |
| static int fan_set_enable(void) |
| { |
| u8 s; |
| int rc; |
| |
| if (!fan_control_allowed) |
| return -EPERM; |
| |
| if (mutex_lock_killable(&fan_mutex)) |
| return -ERESTARTSYS; |
| |
| switch (fan_control_access_mode) { |
| case TPACPI_FAN_WR_ACPI_FANS: |
| case TPACPI_FAN_WR_TPEC: |
| rc = fan_get_status(&s); |
| if (rc < 0) |
| break; |
| |
| /* Don't go out of emergency fan mode */ |
| if (s != 7) { |
| s &= 0x07; |
| s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ |
| } |
| |
| if (!acpi_ec_write(fan_status_offset, s)) |
| rc = -EIO; |
| else { |
| tp_features.fan_ctrl_status_undef = 0; |
| rc = 0; |
| } |
| break; |
| |
| case TPACPI_FAN_WR_ACPI_SFAN: |
| rc = fan_get_status(&s); |
| if (rc < 0) |
| break; |
| |
| s &= 0x07; |
| |
| /* Set fan to at least level 4 */ |
| s |= 4; |
| |
| if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) |
| rc = -EIO; |
| else |
| rc = 0; |
| break; |
| |
| default: |
| rc = -ENXIO; |
| } |
| |
| mutex_unlock(&fan_mutex); |
| |
| if (!rc) |
| vdbg_printk(TPACPI_DBG_FAN, |
| "fan control: set fan control register to 0x%02x\n", |
| s); |
| return rc; |
| } |
| |
| static int fan_set_disable(void) |
| { |
| int rc; |
| |
| if (!fan_control_allowed) |
| return -EPERM; |
| |
| if (mutex_lock_killable(&fan_mutex)) |
| return -ERESTARTSYS; |
| |
| rc = 0; |
| switch (fan_control_access_mode) { |
| case TPACPI_FAN_WR_ACPI_FANS: |
| case TPACPI_FAN_WR_TPEC: |
| if (!acpi_ec_write(fan_status_offset, 0x00)) |
| rc = -EIO; |
| else { |
| fan_control_desired_level = 0; |
| tp_features.fan_ctrl_status_undef = 0; |
| } |
| break; |
| |
| case TPACPI_FAN_WR_ACPI_SFAN: |
| if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) |
| rc = -EIO; |
| else |
| fan_control_desired_level = 0; |
| break; |
| |
| default: |
| rc = -ENXIO; |
| } |
| |
| if (!rc) |
| vdbg_printk(TPACPI_DBG_FAN, |
| "fan control: set fan control register to 0\n"); |
| |
| mutex_unlock(&fan_mutex); |
| return rc; |
| } |
| |
| static int fan_set_speed(int speed) |
| { |
| int rc; |
| |
| if (!fan_control_allowed) |
| return -EPERM; |
| |
| if (mutex_lock_killable(&fan_mutex)) |
| return -ERESTARTSYS; |
| |
| rc = 0; |
| switch (fan_control_access_mode) { |
| case TPACPI_FAN_WR_ACPI_FANS: |
| if (speed >= 0 && speed <= 65535) { |
| if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", |
| speed, speed, speed)) |
| rc = -EIO; |
| } else |
| rc = -EINVAL; |
| break; |
| |
| default: |
| rc = -ENXIO; |
| } |
| |
| mutex_unlock(&fan_mutex); |
| return rc; |
| } |
| |
| static void fan_watchdog_reset(void) |
| { |
| if (fan_control_access_mode == TPACPI_FAN_WR_NONE) |
| return; |
| |
| if (fan_watchdog_maxinterval > 0 && |
| tpacpi_lifecycle != TPACPI_LIFE_EXITING) |
| mod_delayed_work(tpacpi_wq, &fan_watchdog_task, |
| msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); |
| else |
| cancel_delayed_work(&fan_watchdog_task); |
| } |
| |
| static void fan_watchdog_fire(struct work_struct *ignored) |
| { |
| int rc; |
| |
| if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) |
| return; |
| |
| pr_notice("fan watchdog: enabling fan\n"); |
| rc = fan_set_enable(); |
| if (rc < 0) { |
| pr_err("fan watchdog: error %d while enabling fan, " |
| "will try again later...\n", -rc); |
| /* reschedule for later */ |
| fan_watchdog_reset(); |
| } |
| } |
| |
| /* |
| * SYSFS fan layout: hwmon compatible (device) |
| * |
| * pwm*_enable: |
| * 0: "disengaged" mode |
| * 1: manual mode |
| * 2: native EC "auto" mode (recommended, hardware default) |
| * |
| * pwm*: set speed in manual mode, ignored otherwise. |
| * 0 is level 0; 255 is level 7. Intermediate points done with linear |
| * interpolation. |
| * |
| * fan*_input: tachometer reading, RPM |
| * |
| * |
| * SYSFS fan layout: extensions |
| * |
| * fan_watchdog (driver): |
| * fan watchdog interval in seconds, 0 disables (default), max 120 |
| */ |
| |
| /* sysfs fan pwm1_enable ----------------------------------------------- */ |
| static ssize_t fan_pwm1_enable_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res, mode; |
| u8 status; |
| |
| res = fan_get_status_safe(&status); |
| if (res) |
| return res; |
| |
| if (status & TP_EC_FAN_FULLSPEED) { |
| mode = 0; |
| } else if (status & TP_EC_FAN_AUTO) { |
| mode = 2; |
| } else |
| mode = 1; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", mode); |
| } |
| |
| static ssize_t fan_pwm1_enable_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| int res, level; |
| |
| if (parse_strtoul(buf, 2, &t)) |
| return -EINVAL; |
| |
| tpacpi_disclose_usertask("hwmon pwm1_enable", |
| "set fan mode to %lu\n", t); |
| |
| switch (t) { |
| case 0: |
| level = TP_EC_FAN_FULLSPEED; |
| break; |
| case 1: |
| level = TPACPI_FAN_LAST_LEVEL; |
| break; |
| case 2: |
| level = TP_EC_FAN_AUTO; |
| break; |
| case 3: |
| /* reserved for software-controlled auto mode */ |
| return -ENOSYS; |
| default: |
| return -EINVAL; |
| } |
| |
| res = fan_set_level_safe(level); |
| if (res == -ENXIO) |
| return -EINVAL; |
| else if (res < 0) |
| return res; |
| |
| fan_watchdog_reset(); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, |
| fan_pwm1_enable_show, fan_pwm1_enable_store); |
| |
| /* sysfs fan pwm1 ------------------------------------------------------ */ |
| static ssize_t fan_pwm1_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res; |
| u8 status; |
| |
| res = fan_get_status_safe(&status); |
| if (res) |
| return res; |
| |
| if ((status & |
| (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) |
| status = fan_control_desired_level; |
| |
| if (status > 7) |
| status = 7; |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); |
| } |
| |
| static ssize_t fan_pwm1_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long s; |
| int rc; |
| u8 status, newlevel; |
| |
| if (parse_strtoul(buf, 255, &s)) |
| return -EINVAL; |
| |
| tpacpi_disclose_usertask("hwmon pwm1", |
| "set fan speed to %lu\n", s); |
| |
| /* scale down from 0-255 to 0-7 */ |
| newlevel = (s >> 5) & 0x07; |
| |
| if (mutex_lock_killable(&fan_mutex)) |
| return -ERESTARTSYS; |
| |
| rc = fan_get_status(&status); |
| if (!rc && (status & |
| (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { |
| rc = fan_set_level(newlevel); |
| if (rc == -ENXIO) |
| rc = -EINVAL; |
| else if (!rc) { |
| fan_update_desired_level(newlevel); |
| fan_watchdog_reset(); |
| } |
| } |
| |
| mutex_unlock(&fan_mutex); |
| return (rc) ? rc : count; |
| } |
| |
| static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); |
| |
| /* sysfs fan fan1_input ------------------------------------------------ */ |
| static ssize_t fan_fan1_input_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res; |
| unsigned int speed; |
| |
| res = fan_get_speed(&speed); |
| if (res < 0) |
| return res; |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", speed); |
| } |
| |
| static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); |
| |
| /* sysfs fan fan2_input ------------------------------------------------ */ |
| static ssize_t fan_fan2_input_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res; |
| unsigned int speed; |
| |
| res = fan2_get_speed(&speed); |
| if (res < 0) |
| return res; |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", speed); |
| } |
| |
| static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); |
| |
| /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ |
| static ssize_t fan_fan_watchdog_show(struct device_driver *drv, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); |
| } |
| |
| static ssize_t fan_fan_watchdog_store(struct device_driver *drv, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| |
| if (parse_strtoul(buf, 120, &t)) |
| return -EINVAL; |
| |
| if (!fan_control_allowed) |
| return -EPERM; |
| |
| fan_watchdog_maxinterval = t; |
| fan_watchdog_reset(); |
| |
| tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); |
| |
| return count; |
| } |
| |
| static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO, |
| fan_fan_watchdog_show, fan_fan_watchdog_store); |
| |
| /* --------------------------------------------------------------------- */ |
| static struct attribute *fan_attributes[] = { |
| &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr, |
| &dev_attr_fan1_input.attr, |
| NULL, /* for fan2_input */ |
| NULL |
| }; |
| |
| static const struct attribute_group fan_attr_group = { |
| .attrs = fan_attributes, |
| }; |
| |
| #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ |
| #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ |
| |
| #define TPACPI_FAN_QI(__id1, __id2, __quirks) \ |
| { .vendor = PCI_VENDOR_ID_IBM, \ |
| .bios = TPACPI_MATCH_ANY, \ |
| .ec = TPID(__id1, __id2), \ |
| .quirks = __quirks } |
| |
| #define TPACPI_FAN_QL(__id1, __id2, __quirks) \ |
| { .vendor = PCI_VENDOR_ID_LENOVO, \ |
| .bios = TPACPI_MATCH_ANY, \ |
| .ec = TPID(__id1, __id2), \ |
| .quirks = __quirks } |
| |
| static const struct tpacpi_quirk fan_quirk_table[] __initconst = { |
| TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1), |
| TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1), |
| TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1), |
| TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1), |
| TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN), |
| }; |
| |
| #undef TPACPI_FAN_QL |
| #undef TPACPI_FAN_QI |
| |
| static int __init fan_init(struct ibm_init_struct *iibm) |
| { |
| int rc; |
| unsigned long quirks; |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, |
| "initializing fan subdriver\n"); |
| |
| mutex_init(&fan_mutex); |
| fan_status_access_mode = TPACPI_FAN_NONE; |
| fan_control_access_mode = TPACPI_FAN_WR_NONE; |
| fan_control_commands = 0; |
| fan_watchdog_maxinterval = 0; |
| tp_features.fan_ctrl_status_undef = 0; |
| tp_features.second_fan = 0; |
| fan_control_desired_level = 7; |
| |
| if (tpacpi_is_ibm()) { |
| TPACPI_ACPIHANDLE_INIT(fans); |
| TPACPI_ACPIHANDLE_INIT(gfan); |
| TPACPI_ACPIHANDLE_INIT(sfan); |
| } |
| |
| quirks = tpacpi_check_quirks(fan_quirk_table, |
| ARRAY_SIZE(fan_quirk_table)); |
| |
| if (gfan_handle) { |
| /* 570, 600e/x, 770e, 770x */ |
| fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; |
| } else { |
| /* all other ThinkPads: note that even old-style |
| * ThinkPad ECs supports the fan control register */ |
| if (likely(acpi_ec_read(fan_status_offset, |
| &fan_control_initial_status))) { |
| fan_status_access_mode = TPACPI_FAN_RD_TPEC; |
| if (quirks & TPACPI_FAN_Q1) |
| fan_quirk1_setup(); |
| if (quirks & TPACPI_FAN_2FAN) { |
| tp_features.second_fan = 1; |
| dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, |
| "secondary fan support enabled\n"); |
| } |
| } else { |
| pr_err("ThinkPad ACPI EC access misbehaving, " |
| "fan status and control unavailable\n"); |
| return 1; |
| } |
| } |
| |
| if (sfan_handle) { |
| /* 570, 770x-JL */ |
| fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; |
| fan_control_commands |= |
| TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; |
| } else { |
| if (!gfan_handle) { |
| /* gfan without sfan means no fan control */ |
| /* all other models implement TP EC 0x2f control */ |
| |
| if (fans_handle) { |
| /* X31, X40, X41 */ |
| fan_control_access_mode = |
| TPACPI_FAN_WR_ACPI_FANS; |
| fan_control_commands |= |
| TPACPI_FAN_CMD_SPEED | |
| TPACPI_FAN_CMD_LEVEL | |
| TPACPI_FAN_CMD_ENABLE; |
| } else { |
| fan_control_access_mode = TPACPI_FAN_WR_TPEC; |
| fan_control_commands |= |
| TPACPI_FAN_CMD_LEVEL | |
| TPACPI_FAN_CMD_ENABLE; |
| } |
| } |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, |
| "fan is %s, modes %d, %d\n", |
| str_supported(fan_status_access_mode != TPACPI_FAN_NONE || |
| fan_control_access_mode != TPACPI_FAN_WR_NONE), |
| fan_status_access_mode, fan_control_access_mode); |
| |
| /* fan control master switch */ |
| if (!fan_control_allowed) { |
| fan_control_access_mode = TPACPI_FAN_WR_NONE; |
| fan_control_commands = 0; |
| dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, |
| "fan control features disabled by parameter\n"); |
| } |
| |
| /* update fan_control_desired_level */ |
| if (fan_status_access_mode != TPACPI_FAN_NONE) |
| fan_get_status_safe(NULL); |
| |
| if (fan_status_access_mode != TPACPI_FAN_NONE || |
| fan_control_access_mode != TPACPI_FAN_WR_NONE) { |
| if (tp_features.second_fan) { |
| /* attach second fan tachometer */ |
| fan_attributes[ARRAY_SIZE(fan_attributes)-2] = |
| &dev_attr_fan2_input.attr; |
| } |
| rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, |
| &fan_attr_group); |
| if (rc < 0) |
| return rc; |
| |
| rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, |
| &driver_attr_fan_watchdog); |
| if (rc < 0) { |
| sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, |
| &fan_attr_group); |
| return rc; |
| } |
| return 0; |
| } else |
| return 1; |
| } |
| |
| static void fan_exit(void) |
| { |
| vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, |
| "cancelling any pending fan watchdog tasks\n"); |
| |
| /* FIXME: can we really do this unconditionally? */ |
| sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group); |
| driver_remove_file(&tpacpi_hwmon_pdriver.driver, |
| &driver_attr_fan_watchdog); |
| |
| cancel_delayed_work(&fan_watchdog_task); |
| flush_workqueue(tpacpi_wq); |
| } |
| |
| static void fan_suspend(void) |
| { |
| int rc; |
| |
| if (!fan_control_allowed) |
| return; |
| |
| /* Store fan status in cache */ |
| fan_control_resume_level = 0; |
| rc = fan_get_status_safe(&fan_control_resume_level); |
| if (rc < 0) |
| pr_notice("failed to read fan level for later " |
| "restore during resume: %d\n", rc); |
| |
| /* if it is undefined, don't attempt to restore it. |
| * KEEP THIS LAST */ |
| if (tp_features.fan_ctrl_status_undef) |
| fan_control_resume_level = 0; |
| } |
| |
| static void fan_resume(void) |
| { |
| u8 current_level = 7; |
| bool do_set = false; |
| int rc; |
| |
| /* DSDT *always* updates status on resume */ |
| tp_features.fan_ctrl_status_undef = 0; |
| |
| if (!fan_control_allowed || |
| !fan_control_resume_level || |
| (fan_get_status_safe(¤t_level) < 0)) |
| return; |
| |
| switch (fan_control_access_mode) { |
| case TPACPI_FAN_WR_ACPI_SFAN: |
| /* never decrease fan level */ |
| do_set = (fan_control_resume_level > current_level); |
| break; |
| case TPACPI_FAN_WR_ACPI_FANS: |
| case TPACPI_FAN_WR_TPEC: |
| /* never decrease fan level, scale is: |
| * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO |
| * |
| * We expect the firmware to set either 7 or AUTO, but we |
| * handle FULLSPEED out of paranoia. |
| * |
| * So, we can safely only restore FULLSPEED or 7, anything |
| * else could slow the fan. Restoring AUTO is useless, at |
| * best that's exactly what the DSDT already set (it is the |
| * slower it uses). |
| * |
| * Always keep in mind that the DSDT *will* have set the |
| * fans to what the vendor supposes is the best level. We |
| * muck with it only to speed the fan up. |
| */ |
| if (fan_control_resume_level != 7 && |
| !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) |
| return; |
| else |
| do_set = !(current_level & TP_EC_FAN_FULLSPEED) && |
| (current_level != fan_control_resume_level); |
| break; |
| default: |
| return; |
| } |
| if (do_set) { |
| pr_notice("restoring fan level to 0x%02x\n", |
| fan_control_resume_level); |
| rc = fan_set_level_safe(fan_control_resume_level); |
| if (rc < 0) |
| pr_notice("failed to restore fan level: %d\n", rc); |
| } |
| } |
| |
| static int fan_read(struct seq_file *m) |
| { |
| int rc; |
| u8 status; |
| unsigned int speed = 0; |
| |
| switch (fan_status_access_mode) { |
| case TPACPI_FAN_RD_ACPI_GFAN: |
| /* 570, 600e/x, 770e, 770x */ |
| rc = fan_get_status_safe(&status); |
| if (rc < 0) |
| return rc; |
| |
| seq_printf(m, "status:\t\t%s\n" |
| "level:\t\t%d\n", |
| (status != 0) ? "enabled" : "disabled", status); |
| break; |
| |
| case TPACPI_FAN_RD_TPEC: |
| /* all except 570, 600e/x, 770e, 770x */ |
| rc = fan_get_status_safe(&status); |
| if (rc < 0) |
| return rc; |
| |
| seq_printf(m, "status:\t\t%s\n", |
| (status != 0) ? "enabled" : "disabled"); |
| |
| rc = fan_get_speed(&speed); |
| if (rc < 0) |
| return rc; |
| |
| seq_printf(m, "speed:\t\t%d\n", speed); |
| |
| if (status & TP_EC_FAN_FULLSPEED) |
| /* Disengaged mode takes precedence */ |
| seq_printf(m, "level:\t\tdisengaged\n"); |
| else if (status & TP_EC_FAN_AUTO) |
| seq_printf(m, "level:\t\tauto\n"); |
| else |
| seq_printf(m, "level:\t\t%d\n", status); |
| break; |
| |
| case TPACPI_FAN_NONE: |
| default: |
| seq_printf(m, "status:\t\tnot supported\n"); |
| } |
| |
| if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { |
| seq_printf(m, "commands:\tlevel <level>"); |
| |
| switch (fan_control_access_mode) { |
| case TPACPI_FAN_WR_ACPI_SFAN: |
| seq_printf(m, " (<level> is 0-7)\n"); |
| break; |
| |
| default: |
| seq_printf(m, " (<level> is 0-7, " |
| "auto, disengaged, full-speed)\n"); |
| break; |
| } |
| } |
| |
| if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) |
| seq_printf(m, "commands:\tenable, disable\n" |
| "commands:\twatchdog <timeout> (<timeout> " |
| "is 0 (off), 1-120 (seconds))\n"); |
| |
| if (fan_control_commands & TPACPI_FAN_CMD_SPEED) |
| seq_printf(m, "commands:\tspeed <speed>" |
| " (<speed> is 0-65535)\n"); |
| |
| return 0; |
| } |
| |
| static int fan_write_cmd_level(const char *cmd, int *rc) |
| { |
| int level; |
| |
| if (strlencmp(cmd, "level auto") == 0) |
| level = TP_EC_FAN_AUTO; |
| else if ((strlencmp(cmd, "level disengaged") == 0) | |
| (strlencmp(cmd, "level full-speed") == 0)) |
| level = TP_EC_FAN_FULLSPEED; |
| else if (sscanf(cmd, "level %d", &level) != 1) |
| return 0; |
| |
| *rc = fan_set_level_safe(level); |
| if (*rc == -ENXIO) |
| pr_err("level command accepted for unsupported access mode %d\n", |
| fan_control_access_mode); |
| else if (!*rc) |
| tpacpi_disclose_usertask("procfs fan", |
| "set level to %d\n", level); |
| |
| return 1; |
| } |
| |
| static int fan_write_cmd_enable(const char *cmd, int *rc) |
| { |
| if (strlencmp(cmd, "enable") != 0) |
| return 0; |
| |
| *rc = fan_set_enable(); |
| if (*rc == -ENXIO) |
| pr_err("enable command accepted for unsupported access mode %d\n", |
| fan_control_access_mode); |
| else if (!*rc) |
| tpacpi_disclose_usertask("procfs fan", "enable\n"); |
| |
| return 1; |
| } |
| |
| static int fan_write_cmd_disable(const char *cmd, int *rc) |
| { |
| if (strlencmp(cmd, "disable") != 0) |
| return 0; |
| |
| *rc = fan_set_disable(); |
| if (*rc == -ENXIO) |
| pr_err("disable command accepted for unsupported access mode %d\n", |
| fan_control_access_mode); |
| else if (!*rc) |
| tpacpi_disclose_usertask("procfs fan", "disable\n"); |
| |
| return 1; |
| } |
| |
| static int fan_write_cmd_speed(const char *cmd, int *rc) |
| { |
| int speed; |
| |
| /* TODO: |
| * Support speed <low> <medium> <high> ? */ |
| |
| if (sscanf(cmd, "speed %d", &speed) != 1) |
| return 0; |
| |
| *rc = fan_set_speed(speed); |
| if (*rc == -ENXIO) |
| pr_err("speed command accepted for unsupported access mode %d\n", |
| fan_control_access_mode); |
| else if (!*rc) |
| tpacpi_disclose_usertask("procfs fan", |
| "set speed to %d\n", speed); |
| |
| return 1; |
| } |
| |
| static int fan_write_cmd_watchdog(const char *cmd, int *rc) |
| { |
| int interval; |
| |
| if (sscanf(cmd, "watchdog %d", &interval) != 1) |
| return 0; |
| |
| if (interval < 0 || interval > 120) |
| *rc = -EINVAL; |
| else { |
| fan_watchdog_maxinterval = interval; |
| tpacpi_disclose_usertask("procfs fan", |
| "set watchdog timer to %d\n", |
| interval); |
| } |
| |
| return 1; |
| } |
| |
| static int fan_write(char *buf) |
| { |
| char *cmd; |
| int rc = 0; |
| |
| while (!rc && (cmd = next_cmd(&buf))) { |
| if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && |
| fan_write_cmd_level(cmd, &rc)) && |
| !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && |
| (fan_write_cmd_enable(cmd, &rc) || |
| fan_write_cmd_disable(cmd, &rc) || |
| fan_write_cmd_watchdog(cmd, &rc))) && |
| !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && |
| fan_write_cmd_speed(cmd, &rc)) |
| ) |
| rc = -EINVAL; |
| else if (!rc) |
| fan_watchdog_reset(); |
| } |
| |
| return rc; |
| } |
| |
| static struct ibm_struct fan_driver_data = { |
| .name = "fan", |
| .read = fan_read, |
| .write = fan_write, |
| .exit = fan_exit, |
| .suspend = fan_suspend, |
| .resume = fan_resume, |
| }; |
| |
| /************************************************************************* |
| * Mute LED subdriver |
| */ |
| |
| |
| struct tp_led_table { |
| acpi_string name; |
| int on_value; |
| int off_value; |
| int state; |
| }; |
| |
| static struct tp_led_table led_tables[] = { |
| [TPACPI_LED_MUTE] = { |
| .name = "SSMS", |
| .on_value = 1, |
| .off_value = 0, |
| }, |
| [TPACPI_LED_MICMUTE] = { |
| .name = "MMTS", |
| .on_value = 2, |
| .off_value = 0, |
| }, |
| }; |
| |
| static int mute_led_on_off(struct tp_led_table *t, bool state) |
| { |
| acpi_handle temp; |
| int output; |
| |
| if (!ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp))) { |
| pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); |
| return -EIO; |
| } |
| |
| if (!acpi_evalf(hkey_handle, &output, t->name, "dd", |
| state ? t->on_value : t->off_value)) |
| return -EIO; |
| |
| t->state = state; |
| return state; |
| } |
| |
| int tpacpi_led_set(int whichled, bool on) |
| { |
| struct tp_led_table *t; |
| |
| if (whichled < 0 || whichled >= TPACPI_LED_MAX) |
| return -EINVAL; |
| |
| t = &led_tables[whichled]; |
| if (t->state < 0 || t->state == on) |
| return t->state; |
| return mute_led_on_off(t, on); |
| } |
| EXPORT_SYMBOL_GPL(tpacpi_led_set); |
| |
| static int mute_led_init(struct ibm_init_struct *iibm) |
| { |
| acpi_handle temp; |
| int i; |
| |
| for (i = 0; i < TPACPI_LED_MAX; i++) { |
| struct tp_led_table *t = &led_tables[i]; |
| if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp))) |
| mute_led_on_off(t, false); |
| else |
| t->state = -ENODEV; |
| } |
| return 0; |
| } |
| |
| static void mute_led_exit(void) |
| { |
| int i; |
| |
| for (i = 0; i < TPACPI_LED_MAX; i++) |
| tpacpi_led_set(i, false); |
| } |
| |
| static void mute_led_resume(void) |
| { |
| int i; |
| |
| for (i = 0; i < TPACPI_LED_MAX; i++) { |
| struct tp_led_table *t = &led_tables[i]; |
| if (t->state >= 0) |
| mute_led_on_off(t, t->state); |
| } |
| } |
| |
| static struct ibm_struct mute_led_driver_data = { |
| .name = "mute_led", |
| .exit = mute_led_exit, |
| .resume = mute_led_resume, |
| }; |
| |
| /**************************************************************************** |
| **************************************************************************** |
| * |
| * Infrastructure |
| * |
| **************************************************************************** |
| ****************************************************************************/ |
| |
| /* |
| * HKEY event callout for other subdrivers go here |
| * (yes, it is ugly, but it is quick, safe, and gets the job done |
| */ |
| static void tpacpi_driver_event(const unsigned int hkey_event) |
| { |
| if (ibm_backlight_device) { |
| switch (hkey_event) { |
| case TP_HKEY_EV_BRGHT_UP: |
| case TP_HKEY_EV_BRGHT_DOWN: |
| tpacpi_brightness_notify_change(); |
| } |
| } |
| if (alsa_card) { |
| switch (hkey_event) { |
| case TP_HKEY_EV_VOL_UP: |
| case TP_HKEY_EV_VOL_DOWN: |
| case TP_HKEY_EV_VOL_MUTE: |
| volume_alsa_notify_change(); |
| } |
| } |
| } |
| |
| static void hotkey_driver_event(const unsigned int scancode) |
| { |
| tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); |
| } |
| |
| /* sysfs name ---------------------------------------------------------- */ |
| static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME); |
| } |
| |
| static DEVICE_ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL); |
| |
| /* --------------------------------------------------------------------- */ |
| |
| /* /proc support */ |
| static struct proc_dir_entry *proc_dir; |
| |
| /* |
| * Module and infrastructure proble, init and exit handling |
| */ |
| |
| static bool force_load; |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUG |
| static const char * __init str_supported(int is_supported) |
| { |
| static char text_unsupported[] __initdata = "not supported"; |
| |
| return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; |
| } |
| #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ |
| |
| static void ibm_exit(struct ibm_struct *ibm) |
| { |
| dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); |
| |
| list_del_init(&ibm->all_drivers); |
| |
| if (ibm->flags.acpi_notify_installed) { |
| dbg_printk(TPACPI_DBG_EXIT, |
| "%s: acpi_remove_notify_handler\n", ibm->name); |
| BUG_ON(!ibm->acpi); |
| acpi_remove_notify_handler(*ibm->acpi->handle, |
| ibm->acpi->type, |
| dispatch_acpi_notify); |
| ibm->flags.acpi_notify_installed = 0; |
| } |
| |
| if (ibm->flags.proc_created) { |
| dbg_printk(TPACPI_DBG_EXIT, |
| "%s: remove_proc_entry\n", ibm->name); |
| remove_proc_entry(ibm->name, proc_dir); |
| ibm->flags.proc_created = 0; |
| } |
| |
| if (ibm->flags.acpi_driver_registered) { |
| dbg_printk(TPACPI_DBG_EXIT, |
| "%s: acpi_bus_unregister_driver\n", ibm->name); |
| BUG_ON(!ibm->acpi); |
| acpi_bus_unregister_driver(ibm->acpi->driver); |
| kfree(ibm->acpi->driver); |
| ibm->acpi->driver = NULL; |
| ibm->flags.acpi_driver_registered = 0; |
| } |
| |
| if (ibm->flags.init_called && ibm->exit) { |
| ibm->exit(); |
| ibm->flags.init_called = 0; |
| } |
| |
| dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); |
| } |
| |
| static int __init ibm_init(struct ibm_init_struct *iibm) |
| { |
| int ret; |
| struct ibm_struct *ibm = iibm->data; |
| struct proc_dir_entry *entry; |
| |
| BUG_ON(ibm == NULL); |
| |
| INIT_LIST_HEAD(&ibm->all_drivers); |
| |
| if (ibm->flags.experimental && !experimental) |
| return 0; |
| |
| dbg_printk(TPACPI_DBG_INIT, |
| "probing for %s\n", ibm->name); |
| |
| if (iibm->init) { |
| ret = iibm->init(iibm); |
| if (ret > 0) |
| return 0; /* probe failed */ |
| if (ret) |
| return ret; |
| |
| ibm->flags.init_called = 1; |
| } |
| |
| if (ibm->acpi) { |
| if (ibm->acpi->hid) { |
| ret = register_tpacpi_subdriver(ibm); |
| if (ret) |
| goto err_out; |
| } |
| |
| if (ibm->acpi->notify) { |
| ret = setup_acpi_notify(ibm); |
| if (ret == -ENODEV) { |
| pr_notice("disabling subdriver %s\n", |
| ibm->name); |
| ret = 0; |
| goto err_out; |
| } |
| if (ret < 0) |
| goto err_out; |
| } |
| } |
| |
| dbg_printk(TPACPI_DBG_INIT, |
| "%s installed\n", ibm->name); |
| |
| if (ibm->read) { |
| umode_t mode = iibm->base_procfs_mode; |
| |
| if (!mode) |
| mode = S_IRUGO; |
| if (ibm->write) |
| mode |= S_IWUSR; |
| entry = proc_create_data(ibm->name, mode, proc_dir, |
| &dispatch_proc_fops, ibm); |
| if (!entry) { |
| pr_err("unable to create proc entry %s\n", ibm->name); |
| ret = -ENODEV; |
| goto err_out; |
| } |
| ibm->flags.proc_created = 1; |
| } |
| |
| list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); |
| |
| return 0; |
| |
| err_out: |
| dbg_printk(TPACPI_DBG_INIT, |
| "%s: at error exit path with result %d\n", |
| ibm->name, ret); |
| |
| ibm_exit(ibm); |
| return (ret < 0) ? ret : 0; |
| } |
| |
| /* Probing */ |
| |
| static bool __pure __init tpacpi_is_fw_digit(const char c) |
| { |
| return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z'); |
| } |
| |
| static bool __pure __init tpacpi_is_valid_fw_id(const char * const s, |
| const char t) |
| { |
| /* |
| * Most models: xxyTkkWW (#.##c) |
| * Ancient 570/600 and -SL lacks (#.##c) |
| */ |
| if (s && strlen(s) >= 8 && |
| tpacpi_is_fw_digit(s[0]) && |
| tpacpi_is_fw_digit(s[1]) && |
| s[2] == t && |
| (s[3] == 'T' || s[3] == 'N') && |
| tpacpi_is_fw_digit(s[4]) && |
| tpacpi_is_fw_digit(s[5])) |
| return true; |
| |
| /* New models: xxxyTkkW (#.##c); T550 and some others */ |
| return s && strlen(s) >= 8 && |
| tpacpi_is_fw_digit(s[0]) && |
| tpacpi_is_fw_digit(s[1]) && |
| tpacpi_is_fw_digit(s[2]) && |
| s[3] == t && |
| (s[4] == 'T' || s[4] == 'N') && |
| tpacpi_is_fw_digit(s[5]) && |
| tpacpi_is_fw_digit(s[6]); |
| } |
| |
| /* returns 0 - probe ok, or < 0 - probe error. |
| * Probe ok doesn't mean thinkpad found. |
| * On error, kfree() cleanup on tp->* is not performed, caller must do it */ |
| static int __must_check __init get_thinkpad_model_data( |
| struct thinkpad_id_data *tp) |
| { |
| const struct dmi_device *dev = NULL; |
| char ec_fw_string[18]; |
| char const *s; |
| |
| if (!tp) |
| return -EINVAL; |
| |
| memset(tp, 0, sizeof(*tp)); |
| |
| if (dmi_name_in_vendors("IBM")) |
| tp->vendor = PCI_VENDOR_ID_IBM; |
| else if (dmi_name_in_vendors("LENOVO")) |
| tp->vendor = PCI_VENDOR_ID_LENOVO; |
| else |
| return 0; |
| |
| s = dmi_get_system_info(DMI_BIOS_VERSION); |
| tp->bios_version_str = kstrdup(s, GFP_KERNEL); |
| if (s && !tp->bios_version_str) |
| return -ENOMEM; |
| |
| /* Really ancient ThinkPad 240X will fail this, which is fine */ |
| if (!(tpacpi_is_valid_fw_id(tp->bios_version_str, 'E') || |
| tpacpi_is_valid_fw_id(tp->bios_version_str, 'C'))) |
| return 0; |
| |
| tp->bios_model = tp->bios_version_str[0] |
| | (tp->bios_version_str[1] << 8); |
| tp->bios_release = (tp->bios_version_str[4] << 8) |
| | tp->bios_version_str[5]; |
| |
| /* |
| * ThinkPad T23 or newer, A31 or newer, R50e or newer, |
| * X32 or newer, all Z series; Some models must have an |
| * up-to-date BIOS or they will not be detected. |
| * |
| * See http://thinkwiki.org/wiki/List_of_DMI_IDs |
| */ |
| while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { |
| if (sscanf(dev->name, |
| "IBM ThinkPad Embedded Controller -[%17c", |
| ec_fw_string) == 1) { |
| ec_fw_string[sizeof(ec_fw_string) - 1] = 0; |
| ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; |
| |
| tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); |
| if (!tp->ec_version_str) |
| return -ENOMEM; |
| |
| if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) { |
| tp->ec_model = ec_fw_string[0] |
| | (ec_fw_string[1] << 8); |
| tp->ec_release = (ec_fw_string[4] << 8) |
| | ec_fw_string[5]; |
| } else { |
| pr_notice("ThinkPad firmware release %s " |
| "doesn't match the known patterns\n", |
| ec_fw_string); |
| pr_notice("please report this to %s\n", |
| TPACPI_MAIL); |
| } |
| break; |
| } |
| } |
| |
| s = dmi_get_system_info(DMI_PRODUCT_VERSION); |
| if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { |
| tp->model_str = kstrdup(s, GFP_KERNEL); |
| if (!tp->model_str) |
| return -ENOMEM; |
| } else { |
| s = dmi_get_system_info(DMI_BIOS_VENDOR); |
| if (s && !(strncasecmp(s, "Lenovo", 6))) { |
| tp->model_str = kstrdup(s, GFP_KERNEL); |
| if (!tp->model_str) |
| return -ENOMEM; |
| } |
| } |
| |
| s = dmi_get_system_info(DMI_PRODUCT_NAME); |
| tp->nummodel_str = kstrdup(s, GFP_KERNEL); |
| if (s && !tp->nummodel_str) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| static int __init probe_for_thinkpad(void) |
| { |
| int is_thinkpad; |
| |
| if (acpi_disabled) |
| return -ENODEV; |
| |
| /* It would be dangerous to run the driver in this case */ |
| if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) |
| return -ENODEV; |
| |
| /* |
| * Non-ancient models have better DMI tagging, but very old models |
| * don't. tpacpi_is_fw_known() is a cheat to help in that case. |
| */ |
| is_thinkpad = (thinkpad_id.model_str != NULL) || |
| (thinkpad_id.ec_model != 0) || |
| tpacpi_is_fw_known(); |
| |
| /* The EC handler is required */ |
| tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); |
| if (!ec_handle) { |
| if (is_thinkpad) |
| pr_err("Not yet supported ThinkPad detected!\n"); |
| return -ENODEV; |
| } |
| |
| if (!is_thinkpad && !force_load) |
| return -ENODEV; |
| |
| return 0; |
| } |
| |
| static void __init thinkpad_acpi_init_banner(void) |
| { |
| pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); |
| pr_info("%s\n", TPACPI_URL); |
| |
| pr_info("ThinkPad BIOS %s, EC %s\n", |
| (thinkpad_id.bios_version_str) ? |
| thinkpad_id.bios_version_str : "unknown", |
| (thinkpad_id.ec_version_str) ? |
| thinkpad_id.ec_version_str : "unknown"); |
| |
| BUG_ON(!thinkpad_id.vendor); |
| |
| if (thinkpad_id.model_str) |
| pr_info("%s %s, model %s\n", |
| (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? |
| "IBM" : ((thinkpad_id.vendor == |
| PCI_VENDOR_ID_LENOVO) ? |
| "Lenovo" : "Unknown vendor"), |
| thinkpad_id.model_str, |
| (thinkpad_id.nummodel_str) ? |
| thinkpad_id.nummodel_str : "unknown"); |
| } |
| |
| /* Module init, exit, parameters */ |
| |
| static struct ibm_init_struct ibms_init[] __initdata = { |
| { |
| .data = &thinkpad_acpi_driver_data, |
| }, |
| { |
| .init = hotkey_init, |
| .data = &hotkey_driver_data, |
| }, |
| { |
| .init = bluetooth_init, |
| .data = &bluetooth_driver_data, |
| }, |
| { |
| .init = wan_init, |
| .data = &wan_driver_data, |
| }, |
| { |
| .init = uwb_init, |
| .data = &uwb_driver_data, |
| }, |
| #ifdef CONFIG_THINKPAD_ACPI_VIDEO |
| { |
| .init = video_init, |
| .base_procfs_mode = S_IRUSR, |
| .data = &video_driver_data, |
| }, |
| #endif |
| { |
| .init = kbdlight_init, |
| .data = &kbdlight_driver_data, |
| }, |
| { |
| .init = light_init, |
| .data = &light_driver_data, |
| }, |
| { |
| .init = cmos_init, |
| .data = &cmos_driver_data, |
| }, |
| { |
| .init = led_init, |
| .data = &led_driver_data, |
| }, |
| { |
| .init = beep_init, |
| .data = &beep_driver_data, |
| }, |
| { |
| .init = thermal_init, |
| .data = &thermal_driver_data, |
| }, |
| { |
| .init = brightness_init, |
| .data = &brightness_driver_data, |
| }, |
| { |
| .init = volume_init, |
| .data = &volume_driver_data, |
| }, |
| { |
| .init = fan_init, |
| .data = &fan_driver_data, |
| }, |
| { |
| .init = mute_led_init, |
| .data = &mute_led_driver_data, |
| }, |
| }; |
| |
| static int __init set_ibm_param(const char *val, struct kernel_param *kp) |
| { |
| unsigned int i; |
| struct ibm_struct *ibm; |
| |
| if (!kp || !kp->name || !val) |
| return -EINVAL; |
| |
| for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { |
| ibm = ibms_init[i].data; |
| WARN_ON(ibm == NULL); |
| |
| if (!ibm || !ibm->name) |
| continue; |
| |
| if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { |
| if (strlen(val) > sizeof(ibms_init[i].param) - 2) |
| return -ENOSPC; |
| strcpy(ibms_init[i].param, val); |
| strcat(ibms_init[i].param, ","); |
| return 0; |
| } |
| } |
| |
| return -EINVAL; |
| } |
| |
| module_param(experimental, int, 0444); |
| MODULE_PARM_DESC(experimental, |
| "Enables experimental features when non-zero"); |
| |
| module_param_named(debug, dbg_level, uint, 0); |
| MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); |
| |
| module_param(force_load, bool, 0444); |
| MODULE_PARM_DESC(force_load, |
| "Attempts to load the driver even on a " |
| "mis-identified ThinkPad when true"); |
| |
| module_param_named(fan_control, fan_control_allowed, bool, 0444); |
| MODULE_PARM_DESC(fan_control, |
| "Enables setting fan parameters features when true"); |
| |
| module_param_named(brightness_mode, brightness_mode, uint, 0444); |
| MODULE_PARM_DESC(brightness_mode, |
| "Selects brightness control strategy: " |
| "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); |
| |
| module_param(brightness_enable, uint, 0444); |
| MODULE_PARM_DESC(brightness_enable, |
| "Enables backlight control when 1, disables when 0"); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT |
| module_param_named(volume_mode, volume_mode, uint, 0444); |
| MODULE_PARM_DESC(volume_mode, |
| "Selects volume control strategy: " |
| "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); |
| |
| module_param_named(volume_capabilities, volume_capabilities, uint, 0444); |
| MODULE_PARM_DESC(volume_capabilities, |
| "Selects the mixer capabilites: " |
| "0=auto, 1=volume and mute, 2=mute only"); |
| |
| module_param_named(volume_control, volume_control_allowed, bool, 0444); |
| MODULE_PARM_DESC(volume_control, |
| "Enables software override for the console audio " |
| "control when true"); |
| |
| module_param_named(software_mute, software_mute_requested, bool, 0444); |
| MODULE_PARM_DESC(software_mute, |
| "Request full software mute control"); |
| |
| /* ALSA module API parameters */ |
| module_param_named(index, alsa_index, int, 0444); |
| MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); |
| module_param_named(id, alsa_id, charp, 0444); |
| MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); |
| module_param_named(enable, alsa_enable, bool, 0444); |
| MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); |
| #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ |
| |
| #define TPACPI_PARAM(feature) \ |
| module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ |
| MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \ |
| "at module load, see documentation") |
| |
| TPACPI_PARAM(hotkey); |
| TPACPI_PARAM(bluetooth); |
| TPACPI_PARAM(video); |
| TPACPI_PARAM(light); |
| TPACPI_PARAM(cmos); |
| TPACPI_PARAM(led); |
| TPACPI_PARAM(beep); |
| TPACPI_PARAM(brightness); |
| TPACPI_PARAM(volume); |
| TPACPI_PARAM(fan); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES |
| module_param(dbg_wlswemul, uint, 0444); |
| MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); |
| module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); |
| MODULE_PARM_DESC(wlsw_state, |
| "Initial state of the emulated WLSW switch"); |
| |
| module_param(dbg_bluetoothemul, uint, 0444); |
| MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); |
| module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); |
| MODULE_PARM_DESC(bluetooth_state, |
| "Initial state of the emulated bluetooth switch"); |
| |
| module_param(dbg_wwanemul, uint, 0444); |
| MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); |
| module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); |
| MODULE_PARM_DESC(wwan_state, |
| "Initial state of the emulated WWAN switch"); |
| |
| module_param(dbg_uwbemul, uint, 0444); |
| MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); |
| module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); |
| MODULE_PARM_DESC(uwb_state, |
| "Initial state of the emulated UWB switch"); |
| #endif |
| |
| static void thinkpad_acpi_module_exit(void) |
| { |
| struct ibm_struct *ibm, *itmp; |
| |
| tpacpi_lifecycle = TPACPI_LIFE_EXITING; |
| |
| list_for_each_entry_safe_reverse(ibm, itmp, |
| &tpacpi_all_drivers, |
| all_drivers) { |
| ibm_exit(ibm); |
| } |
| |
| dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); |
| |
| if (tpacpi_inputdev) { |
| if (tp_features.input_device_registered) |
| input_unregister_device(tpacpi_inputdev); |
| else |
| input_free_device(tpacpi_inputdev); |
| kfree(hotkey_keycode_map); |
| } |
| |
| if (tpacpi_hwmon) |
| hwmon_device_unregister(tpacpi_hwmon); |
| |
| if (tp_features.sensors_pdev_attrs_registered) |
| device_remove_file(&tpacpi_sensors_pdev->dev, &dev_attr_name); |
| if (tpacpi_sensors_pdev) |
| platform_device_unregister(tpacpi_sensors_pdev); |
| if (tpacpi_pdev) |
| platform_device_unregister(tpacpi_pdev); |
| |
| if (tp_features.sensors_pdrv_attrs_registered) |
| tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); |
| if (tp_features.platform_drv_attrs_registered) |
| tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); |
| |
| if (tp_features.sensors_pdrv_registered) |
| platform_driver_unregister(&tpacpi_hwmon_pdriver); |
| |
| if (tp_features.platform_drv_registered) |
| platform_driver_unregister(&tpacpi_pdriver); |
| |
| if (proc_dir) |
| remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); |
| |
| if (tpacpi_wq) |
| destroy_workqueue(tpacpi_wq); |
| |
| kfree(thinkpad_id.bios_version_str); |
| kfree(thinkpad_id.ec_version_str); |
| kfree(thinkpad_id.model_str); |
| kfree(thinkpad_id.nummodel_str); |
| } |
| |
| |
| static int __init thinkpad_acpi_module_init(void) |
| { |
| int ret, i; |
| |
| tpacpi_lifecycle = TPACPI_LIFE_INIT; |
| |
| /* Driver-level probe */ |
| |
| ret = get_thinkpad_model_data(&thinkpad_id); |
| if (ret) { |
| pr_err("unable to get DMI data: %d\n", ret); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| ret = probe_for_thinkpad(); |
| if (ret) { |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| |
| /* Driver initialization */ |
| |
| thinkpad_acpi_init_banner(); |
| tpacpi_check_outdated_fw(); |
| |
| TPACPI_ACPIHANDLE_INIT(ecrd); |
| TPACPI_ACPIHANDLE_INIT(ecwr); |
| |
| tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); |
| if (!tpacpi_wq) { |
| thinkpad_acpi_module_exit(); |
| return -ENOMEM; |
| } |
| |
| proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); |
| if (!proc_dir) { |
| pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); |
| thinkpad_acpi_module_exit(); |
| return -ENODEV; |
| } |
| |
| ret = platform_driver_register(&tpacpi_pdriver); |
| if (ret) { |
| pr_err("unable to register main platform driver\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| tp_features.platform_drv_registered = 1; |
| |
| ret = platform_driver_register(&tpacpi_hwmon_pdriver); |
| if (ret) { |
| pr_err("unable to register hwmon platform driver\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| tp_features.sensors_pdrv_registered = 1; |
| |
| ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); |
| if (!ret) { |
| tp_features.platform_drv_attrs_registered = 1; |
| ret = tpacpi_create_driver_attributes( |
| &tpacpi_hwmon_pdriver.driver); |
| } |
| if (ret) { |
| pr_err("unable to create sysfs driver attributes\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| tp_features.sensors_pdrv_attrs_registered = 1; |
| |
| |
| /* Device initialization */ |
| tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, |
| NULL, 0); |
| if (IS_ERR(tpacpi_pdev)) { |
| ret = PTR_ERR(tpacpi_pdev); |
| tpacpi_pdev = NULL; |
| pr_err("unable to register platform device\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| tpacpi_sensors_pdev = platform_device_register_simple( |
| TPACPI_HWMON_DRVR_NAME, |
| -1, NULL, 0); |
| if (IS_ERR(tpacpi_sensors_pdev)) { |
| ret = PTR_ERR(tpacpi_sensors_pdev); |
| tpacpi_sensors_pdev = NULL; |
| pr_err("unable to register hwmon platform device\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| ret = device_create_file(&tpacpi_sensors_pdev->dev, &dev_attr_name); |
| if (ret) { |
| pr_err("unable to create sysfs hwmon device attributes\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| tp_features.sensors_pdev_attrs_registered = 1; |
| tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev); |
| if (IS_ERR(tpacpi_hwmon)) { |
| ret = PTR_ERR(tpacpi_hwmon); |
| tpacpi_hwmon = NULL; |
| pr_err("unable to register hwmon device\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| mutex_init(&tpacpi_inputdev_send_mutex); |
| tpacpi_inputdev = input_allocate_device(); |
| if (!tpacpi_inputdev) { |
| thinkpad_acpi_module_exit(); |
| return -ENOMEM; |
| } else { |
| /* Prepare input device, but don't register */ |
| tpacpi_inputdev->name = "ThinkPad Extra Buttons"; |
| tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; |
| tpacpi_inputdev->id.bustype = BUS_HOST; |
| tpacpi_inputdev->id.vendor = thinkpad_id.vendor; |
| tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; |
| tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; |
| tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; |
| } |
| |
| /* Init subdriver dependencies */ |
| tpacpi_detect_brightness_capabilities(); |
| |
| /* Init subdrivers */ |
| for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { |
| ret = ibm_init(&ibms_init[i]); |
| if (ret >= 0 && *ibms_init[i].param) |
| ret = ibms_init[i].data->write(ibms_init[i].param); |
| if (ret < 0) { |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| } |
| |
| tpacpi_lifecycle = TPACPI_LIFE_RUNNING; |
| |
| ret = input_register_device(tpacpi_inputdev); |
| if (ret < 0) { |
| pr_err("unable to register input device\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } else { |
| tp_features.input_device_registered = 1; |
| } |
| |
| return 0; |
| } |
| |
| MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); |
| |
| /* |
| * This will autoload the driver in almost every ThinkPad |
| * in widespread use. |
| * |
| * Only _VERY_ old models, like the 240, 240x and 570 lack |
| * the HKEY event interface. |
| */ |
| MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); |
| |
| /* |
| * DMI matching for module autoloading |
| * |
| * See http://thinkwiki.org/wiki/List_of_DMI_IDs |
| * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads |
| * |
| * Only models listed in thinkwiki will be supported, so add yours |
| * if it is not there yet. |
| */ |
| #define IBM_BIOS_MODULE_ALIAS(__type) \ |
| MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") |
| |
| /* Ancient thinkpad BIOSes have to be identified by |
| * BIOS type or model number, and there are far less |
| * BIOS types than model numbers... */ |
| IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ |
| |
| MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); |
| MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); |
| MODULE_DESCRIPTION(TPACPI_DESC); |
| MODULE_VERSION(TPACPI_VERSION); |
| MODULE_LICENSE("GPL"); |
| |
| module_init(thinkpad_acpi_module_init); |
| module_exit(thinkpad_acpi_module_exit); |