Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * video.c - ACPI Video Driver ($Revision:$) |
| 3 | * |
| 4 | * Copyright (C) 2004 Luming Yu <luming.yu@intel.com> |
| 5 | * Copyright (C) 2004 Bruno Ducrot <ducrot@poupinou.org> |
Thomas Tuttle | f471518 | 2006-12-19 12:56:14 -0800 | [diff] [blame] | 6 | * Copyright (C) 2006 Thomas Tuttle <linux-kernel@ttuttle.net> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or (at |
| 13 | * your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, but |
| 16 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 18 | * General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License along |
| 21 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 22 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| 23 | * |
| 24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 25 | */ |
| 26 | |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/init.h> |
| 30 | #include <linux/types.h> |
| 31 | #include <linux/list.h> |
Dmitry Torokhov | bbac81f | 2007-11-05 11:43:32 -0500 | [diff] [blame] | 32 | #include <linux/mutex.h> |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 33 | #include <linux/input.h> |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 34 | #include <linux/backlight.h> |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 35 | #include <linux/thermal.h> |
Zhang Rui | 935e5f2 | 2008-12-11 16:24:52 -0500 | [diff] [blame] | 36 | #include <linux/sort.h> |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 37 | #include <linux/pci.h> |
| 38 | #include <linux/pci_ids.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 39 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <asm/uaccess.h> |
Len Brown | eb27cae | 2009-07-06 23:40:19 -0400 | [diff] [blame] | 41 | #include <linux/dmi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <acpi/acpi_bus.h> |
| 43 | #include <acpi/acpi_drivers.h> |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 44 | #include <linux/suspend.h> |
Matthew Garrett | e92a716 | 2010-01-12 14:17:03 -0500 | [diff] [blame] | 45 | #include <acpi/video.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
Rafael J. Wysocki | 8c5bd7a | 2013-07-18 02:08:06 +0200 | [diff] [blame] | 47 | #include "internal.h" |
| 48 | |
Len Brown | a192a95 | 2009-07-28 16:45:54 -0400 | [diff] [blame] | 49 | #define PREFIX "ACPI: " |
| 50 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #define ACPI_VIDEO_BUS_NAME "Video Bus" |
| 52 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" |
| 53 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 |
| 54 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 |
| 55 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 |
| 56 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 |
| 57 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 |
| 58 | |
Thomas Tuttle | f471518 | 2006-12-19 12:56:14 -0800 | [diff] [blame] | 59 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85 |
| 60 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86 |
| 61 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87 |
| 62 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88 |
| 63 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 65 | #define MAX_NAME_LEN 20 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | #define _COMPONENT ACPI_VIDEO_COMPONENT |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 68 | ACPI_MODULE_NAME("video"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 70 | MODULE_AUTHOR("Bruno Ducrot"); |
Len Brown | 7cda93e | 2007-02-12 23:50:02 -0500 | [diff] [blame] | 71 | MODULE_DESCRIPTION("ACPI Video Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | MODULE_LICENSE("GPL"); |
| 73 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 74 | static bool brightness_switch_enabled = 1; |
Zhang Rui | 8a681a4 | 2008-01-25 14:47:49 +0800 | [diff] [blame] | 75 | module_param(brightness_switch_enabled, bool, 0644); |
| 76 | |
Zhang Rui | c504f8c | 2009-12-30 15:59:23 +0800 | [diff] [blame] | 77 | /* |
| 78 | * By default, we don't allow duplicate ACPI video bus devices |
| 79 | * under the same VGA controller |
| 80 | */ |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 81 | static bool allow_duplicates; |
Zhang Rui | c504f8c | 2009-12-30 15:59:23 +0800 | [diff] [blame] | 82 | module_param(allow_duplicates, bool, 0644); |
| 83 | |
Zhang Rui | 99fd189 | 2010-12-06 15:04:27 +0800 | [diff] [blame] | 84 | /* |
| 85 | * Some BIOSes claim they use minimum backlight at boot, |
| 86 | * and this may bring dimming screen after boot |
| 87 | */ |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 88 | static bool use_bios_initial_backlight = 1; |
Zhang Rui | 99fd189 | 2010-12-06 15:04:27 +0800 | [diff] [blame] | 89 | module_param(use_bios_initial_backlight, bool, 0644); |
| 90 | |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 91 | static int register_count = 0; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 92 | static int acpi_video_bus_add(struct acpi_device *device); |
Rafael J. Wysocki | 51fac83 | 2013-01-24 00:24:48 +0100 | [diff] [blame] | 93 | static int acpi_video_bus_remove(struct acpi_device *device); |
Bjorn Helgaas | 7015558 | 2009-04-07 15:37:11 +0000 | [diff] [blame] | 94 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
Thomas Renninger | 1ba90e3 | 2007-07-23 14:44:41 +0200 | [diff] [blame] | 96 | static const struct acpi_device_id video_device_ids[] = { |
| 97 | {ACPI_VIDEO_HID, 0}, |
| 98 | {"", 0}, |
| 99 | }; |
| 100 | MODULE_DEVICE_TABLE(acpi, video_device_ids); |
| 101 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | static struct acpi_driver acpi_video_bus = { |
Len Brown | c2b6705 | 2007-02-12 23:33:40 -0500 | [diff] [blame] | 103 | .name = "video", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | .class = ACPI_VIDEO_CLASS, |
Thomas Renninger | 1ba90e3 | 2007-07-23 14:44:41 +0200 | [diff] [blame] | 105 | .ids = video_device_ids, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | .ops = { |
| 107 | .add = acpi_video_bus_add, |
| 108 | .remove = acpi_video_bus_remove, |
Bjorn Helgaas | 7015558 | 2009-04-07 15:37:11 +0000 | [diff] [blame] | 109 | .notify = acpi_video_bus_notify, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 110 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | }; |
| 112 | |
| 113 | struct acpi_video_bus_flags { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 114 | u8 multihead:1; /* can switch video heads */ |
| 115 | u8 rom:1; /* can retrieve a video rom */ |
| 116 | u8 post:1; /* can configure the head to */ |
| 117 | u8 reserved:5; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | }; |
| 119 | |
| 120 | struct acpi_video_bus_cap { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 121 | u8 _DOS:1; /*Enable/Disable output switching */ |
| 122 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ |
| 123 | u8 _ROM:1; /*Get ROM Data */ |
| 124 | u8 _GPD:1; /*Get POST Device */ |
| 125 | u8 _SPD:1; /*Set POST Device */ |
| 126 | u8 _VPO:1; /*Video POST Options */ |
| 127 | u8 reserved:2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | }; |
| 129 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 130 | struct acpi_video_device_attrib { |
| 131 | u32 display_index:4; /* A zero-based instance of the Display */ |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 132 | u32 display_port_attachment:4; /*This field differentiates the display type */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 133 | u32 display_type:4; /*Describe the specific type in use */ |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 134 | u32 vendor_specific:4; /*Chipset Vendor Specific */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 135 | u32 bios_can_detect:1; /*BIOS can detect the device */ |
| 136 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to |
| 137 | the VGA device. */ |
| 138 | u32 pipe_id:3; /*For VGA multiple-head devices. */ |
| 139 | u32 reserved:10; /*Must be 0 */ |
| 140 | u32 device_id_scheme:1; /*Device ID Scheme */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | }; |
| 142 | |
| 143 | struct acpi_video_enumerated_device { |
| 144 | union { |
| 145 | u32 int_val; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 146 | struct acpi_video_device_attrib attrib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | } value; |
| 148 | struct acpi_video_device *bind_info; |
| 149 | }; |
| 150 | |
| 151 | struct acpi_video_bus { |
Patrick Mochel | e6afa0d | 2006-05-19 16:54:40 -0400 | [diff] [blame] | 152 | struct acpi_device *device; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 153 | u8 dos_setting; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | struct acpi_video_enumerated_device *attached_array; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 155 | u8 attached_count; |
| 156 | struct acpi_video_bus_cap cap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | struct acpi_video_bus_flags flags; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 158 | struct list_head video_device_list; |
Dmitry Torokhov | bbac81f | 2007-11-05 11:43:32 -0500 | [diff] [blame] | 159 | struct mutex device_list_lock; /* protects video_device_list */ |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 160 | struct input_dev *input; |
| 161 | char phys[32]; /* for input device */ |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 162 | struct notifier_block pm_nb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | }; |
| 164 | |
| 165 | struct acpi_video_device_flags { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 166 | u8 crt:1; |
| 167 | u8 lcd:1; |
| 168 | u8 tvout:1; |
Rui Zhang | 82cae99 | 2007-01-03 23:40:53 -0500 | [diff] [blame] | 169 | u8 dvi:1; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 170 | u8 bios:1; |
| 171 | u8 unknown:1; |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 172 | u8 notify:1; |
| 173 | u8 reserved:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | }; |
| 175 | |
| 176 | struct acpi_video_device_cap { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 177 | u8 _ADR:1; /*Return the unique ID */ |
| 178 | u8 _BCL:1; /*Query list of brightness control levels supported */ |
| 179 | u8 _BCM:1; /*Set the brightness level */ |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 180 | u8 _BQC:1; /* Get current brightness level */ |
Zhang Rui | c60d638 | 2009-03-18 16:27:18 +0800 | [diff] [blame] | 181 | u8 _BCQ:1; /* Some buggy BIOS uses _BCQ instead of _BQC */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 182 | u8 _DDC:1; /*Return the EDID for this device */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | }; |
| 184 | |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 185 | struct acpi_video_brightness_flags { |
| 186 | u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */ |
Zhang Rui | d80fb99 | 2009-03-18 16:27:14 +0800 | [diff] [blame] | 187 | u8 _BCL_reversed:1; /* _BCL package is in a reversed order*/ |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 188 | u8 _BCL_use_index:1; /* levels in _BCL are index values */ |
| 189 | u8 _BCM_use_index:1; /* input of _BCM is an index value */ |
| 190 | u8 _BQC_use_index:1; /* _BQC returns an index value */ |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 191 | }; |
| 192 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | struct acpi_video_device_brightness { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 194 | int curr; |
| 195 | int count; |
| 196 | int *levels; |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 197 | struct acpi_video_brightness_flags flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | }; |
| 199 | |
| 200 | struct acpi_video_device { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 201 | unsigned long device_id; |
| 202 | struct acpi_video_device_flags flags; |
| 203 | struct acpi_video_device_cap cap; |
| 204 | struct list_head entry; |
| 205 | struct acpi_video_bus *video; |
| 206 | struct acpi_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | struct acpi_video_device_brightness *brightness; |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 208 | struct backlight_device *backlight; |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 209 | struct thermal_cooling_device *cooling_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | }; |
| 211 | |
Jan Engelhardt | b7171ae | 2009-01-12 00:08:19 +0100 | [diff] [blame] | 212 | static const char device_decode[][30] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | "motherboard VGA device", |
| 214 | "PCI VGA device", |
| 215 | "AGP VGA device", |
| 216 | "UNKNOWN", |
| 217 | }; |
| 218 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 219 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
| 220 | static void acpi_video_device_rebind(struct acpi_video_bus *video); |
| 221 | static void acpi_video_device_bind(struct acpi_video_bus *video, |
| 222 | struct acpi_video_device *device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 224 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
| 225 | int level); |
| 226 | static int acpi_video_device_lcd_get_level_current( |
| 227 | struct acpi_video_device *device, |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 228 | unsigned long long *level, bool raw); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 229 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
| 230 | u32 level_current, u32 event); |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 231 | static int acpi_video_switch_brightness(struct acpi_video_device *device, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 232 | int event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 234 | /*backlight device sysfs support*/ |
| 235 | static int acpi_video_get_brightness(struct backlight_device *bd) |
| 236 | { |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 237 | unsigned long long cur_level; |
Matthew Garrett | 38531e6 | 2007-12-26 02:03:26 +0000 | [diff] [blame] | 238 | int i; |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 239 | struct acpi_video_device *vd = |
Richard Purdie | 655bfd7 | 2007-07-09 12:17:24 +0100 | [diff] [blame] | 240 | (struct acpi_video_device *)bl_get_data(bd); |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 241 | |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 242 | if (acpi_video_device_lcd_get_level_current(vd, &cur_level, false)) |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 243 | return -EINVAL; |
Matthew Garrett | 38531e6 | 2007-12-26 02:03:26 +0000 | [diff] [blame] | 244 | for (i = 2; i < vd->brightness->count; i++) { |
| 245 | if (vd->brightness->levels[i] == cur_level) |
| 246 | /* The first two entries are special - see page 575 |
| 247 | of the ACPI spec 3.0 */ |
| 248 | return i-2; |
| 249 | } |
| 250 | return 0; |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | static int acpi_video_set_brightness(struct backlight_device *bd) |
| 254 | { |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 255 | int request_level = bd->props.brightness + 2; |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 256 | struct acpi_video_device *vd = |
Richard Purdie | 655bfd7 | 2007-07-09 12:17:24 +0100 | [diff] [blame] | 257 | (struct acpi_video_device *)bl_get_data(bd); |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 258 | |
| 259 | return acpi_video_device_lcd_set_level(vd, |
| 260 | vd->brightness->levels[request_level]); |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 261 | } |
| 262 | |
Lionel Debroux | acc2472 | 2010-11-16 14:14:02 +0100 | [diff] [blame] | 263 | static const struct backlight_ops acpi_backlight_ops = { |
Richard Purdie | 599a52d | 2007-02-10 23:07:48 +0000 | [diff] [blame] | 264 | .get_brightness = acpi_video_get_brightness, |
| 265 | .update_status = acpi_video_set_brightness, |
| 266 | }; |
| 267 | |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 268 | /* thermal cooling device callbacks */ |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 269 | static int video_get_max_state(struct thermal_cooling_device *cooling_dev, unsigned |
Matthew Garrett | 6503e5d | 2008-11-27 17:48:13 +0000 | [diff] [blame] | 270 | long *state) |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 271 | { |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 272 | struct acpi_device *device = cooling_dev->devdata; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 273 | struct acpi_video_device *video = acpi_driver_data(device); |
| 274 | |
Matthew Garrett | 6503e5d | 2008-11-27 17:48:13 +0000 | [diff] [blame] | 275 | *state = video->brightness->count - 3; |
| 276 | return 0; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 277 | } |
| 278 | |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 279 | static int video_get_cur_state(struct thermal_cooling_device *cooling_dev, unsigned |
Matthew Garrett | 6503e5d | 2008-11-27 17:48:13 +0000 | [diff] [blame] | 280 | long *state) |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 281 | { |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 282 | struct acpi_device *device = cooling_dev->devdata; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 283 | struct acpi_video_device *video = acpi_driver_data(device); |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 284 | unsigned long long level; |
Matthew Garrett | 6503e5d | 2008-11-27 17:48:13 +0000 | [diff] [blame] | 285 | int offset; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 286 | |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 287 | if (acpi_video_device_lcd_get_level_current(video, &level, false)) |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 288 | return -EINVAL; |
Matthew Garrett | 6503e5d | 2008-11-27 17:48:13 +0000 | [diff] [blame] | 289 | for (offset = 2; offset < video->brightness->count; offset++) |
| 290 | if (level == video->brightness->levels[offset]) { |
| 291 | *state = video->brightness->count - offset - 1; |
| 292 | return 0; |
| 293 | } |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 294 | |
| 295 | return -EINVAL; |
| 296 | } |
| 297 | |
| 298 | static int |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 299 | video_set_cur_state(struct thermal_cooling_device *cooling_dev, unsigned long state) |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 300 | { |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 301 | struct acpi_device *device = cooling_dev->devdata; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 302 | struct acpi_video_device *video = acpi_driver_data(device); |
| 303 | int level; |
| 304 | |
| 305 | if ( state >= video->brightness->count - 2) |
| 306 | return -EINVAL; |
| 307 | |
| 308 | state = video->brightness->count - state; |
| 309 | level = video->brightness->levels[state -1]; |
| 310 | return acpi_video_device_lcd_set_level(video, level); |
| 311 | } |
| 312 | |
Vasiliy Kulikov | 9c8b04b | 2011-06-25 21:07:52 +0400 | [diff] [blame] | 313 | static const struct thermal_cooling_device_ops video_cooling_ops = { |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 314 | .get_max_state = video_get_max_state, |
| 315 | .get_cur_state = video_get_cur_state, |
| 316 | .set_cur_state = video_set_cur_state, |
| 317 | }; |
| 318 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | /* -------------------------------------------------------------------------- |
| 320 | Video Management |
| 321 | -------------------------------------------------------------------------- */ |
| 322 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 324 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
| 325 | union acpi_object **levels) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 327 | int status; |
| 328 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 329 | union acpi_object *obj; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
| 332 | *levels = NULL; |
| 333 | |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 334 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | if (!ACPI_SUCCESS(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 336 | return status; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 337 | obj = (union acpi_object *)buffer.pointer; |
Adrian Bunk | 6665bda | 2006-03-11 10:12:00 -0500 | [diff] [blame] | 338 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
Len Brown | 6468463 | 2006-06-26 23:41:38 -0400 | [diff] [blame] | 339 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | status = -EFAULT; |
| 341 | goto err; |
| 342 | } |
| 343 | |
| 344 | *levels = obj; |
| 345 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 346 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 348 | err: |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 349 | kfree(buffer.pointer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 351 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 355 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | { |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 357 | int status; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 358 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
| 359 | struct acpi_object_list args = { 1, &arg0 }; |
Zhang Rui | 9e6dada | 2008-12-31 10:58:48 +0800 | [diff] [blame] | 360 | int state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | arg0.integer.value = level; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 364 | status = acpi_evaluate_object(device->dev->handle, "_BCM", |
| 365 | &args, NULL); |
| 366 | if (ACPI_FAILURE(status)) { |
| 367 | ACPI_ERROR((AE_INFO, "Evaluating _BCM failed")); |
| 368 | return -EIO; |
| 369 | } |
| 370 | |
Alexey Starikovskiy | 4500ca8 | 2007-09-03 16:29:58 +0400 | [diff] [blame] | 371 | device->brightness->curr = level; |
Zhang Rui | 9e6dada | 2008-12-31 10:58:48 +0800 | [diff] [blame] | 372 | for (state = 2; state < device->brightness->count; state++) |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 373 | if (level == device->brightness->levels[state]) { |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 374 | if (device->backlight) |
| 375 | device->backlight->props.brightness = state - 2; |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 376 | return 0; |
| 377 | } |
Zhang Rui | 9e6dada | 2008-12-31 10:58:48 +0800 | [diff] [blame] | 378 | |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 379 | ACPI_ERROR((AE_INFO, "Current brightness invalid")); |
| 380 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | } |
| 382 | |
Zhang Rui | 45cb50e | 2009-04-24 12:13:18 -0400 | [diff] [blame] | 383 | /* |
| 384 | * For some buggy _BQC methods, we need to add a constant value to |
| 385 | * the _BQC return value to get the actual current brightness level |
| 386 | */ |
| 387 | |
| 388 | static int bqc_offset_aml_bug_workaround; |
| 389 | static int __init video_set_bqc_offset(const struct dmi_system_id *d) |
| 390 | { |
| 391 | bqc_offset_aml_bug_workaround = 9; |
| 392 | return 0; |
| 393 | } |
| 394 | |
Zhang Rui | 129ff8f | 2012-12-04 23:30:19 +0100 | [diff] [blame] | 395 | static int video_ignore_initial_backlight(const struct dmi_system_id *d) |
| 396 | { |
| 397 | use_bios_initial_backlight = 0; |
| 398 | return 0; |
| 399 | } |
| 400 | |
Zhang Rui | 45cb50e | 2009-04-24 12:13:18 -0400 | [diff] [blame] | 401 | static struct dmi_system_id video_dmi_table[] __initdata = { |
| 402 | /* |
| 403 | * Broken _BQC workaround http://bugzilla.kernel.org/show_bug.cgi?id=13121 |
| 404 | */ |
| 405 | { |
| 406 | .callback = video_set_bqc_offset, |
| 407 | .ident = "Acer Aspire 5720", |
| 408 | .matches = { |
| 409 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), |
| 410 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"), |
| 411 | }, |
| 412 | }, |
Len Brown | 5afc4ab | 2009-05-07 21:11:56 -0400 | [diff] [blame] | 413 | { |
| 414 | .callback = video_set_bqc_offset, |
| 415 | .ident = "Acer Aspire 5710Z", |
| 416 | .matches = { |
| 417 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), |
| 418 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5710Z"), |
| 419 | }, |
| 420 | }, |
Zhang Rui | 34ac272 | 2009-05-26 23:35:34 -0400 | [diff] [blame] | 421 | { |
| 422 | .callback = video_set_bqc_offset, |
| 423 | .ident = "eMachines E510", |
| 424 | .matches = { |
| 425 | DMI_MATCH(DMI_BOARD_VENDOR, "EMACHINES"), |
| 426 | DMI_MATCH(DMI_PRODUCT_NAME, "eMachines E510"), |
| 427 | }, |
| 428 | }, |
Zhang Rui | 93bcece | 2009-05-19 15:08:41 -0400 | [diff] [blame] | 429 | { |
| 430 | .callback = video_set_bqc_offset, |
| 431 | .ident = "Acer Aspire 5315", |
| 432 | .matches = { |
| 433 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), |
| 434 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"), |
| 435 | }, |
| 436 | }, |
Zhang Rui | 152a4e6 | 2009-06-22 11:31:18 +0800 | [diff] [blame] | 437 | { |
| 438 | .callback = video_set_bqc_offset, |
| 439 | .ident = "Acer Aspire 7720", |
| 440 | .matches = { |
| 441 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), |
| 442 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720"), |
| 443 | }, |
| 444 | }, |
Zhang Rui | 129ff8f | 2012-12-04 23:30:19 +0100 | [diff] [blame] | 445 | { |
| 446 | .callback = video_ignore_initial_backlight, |
| 447 | .ident = "HP Folio 13-2000", |
| 448 | .matches = { |
| 449 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), |
| 450 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"), |
| 451 | }, |
| 452 | }, |
Gustavo Maciel Dias Vieira | 771d09b | 2013-03-04 15:23:37 +0000 | [diff] [blame] | 453 | { |
| 454 | .callback = video_ignore_initial_backlight, |
Lan Tianyu | 9657a56 | 2013-07-16 10:07:21 +0800 | [diff] [blame] | 455 | .ident = "Fujitsu E753", |
| 456 | .matches = { |
| 457 | DMI_MATCH(DMI_BOARD_VENDOR, "FUJITSU"), |
| 458 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E753"), |
| 459 | }, |
| 460 | }, |
| 461 | { |
| 462 | .callback = video_ignore_initial_backlight, |
Gustavo Maciel Dias Vieira | 771d09b | 2013-03-04 15:23:37 +0000 | [diff] [blame] | 463 | .ident = "HP Pavilion dm4", |
| 464 | .matches = { |
| 465 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), |
| 466 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dm4 Notebook PC"), |
| 467 | }, |
| 468 | }, |
Alex Hung | 4ef366c | 2013-05-06 08:23:43 +0000 | [diff] [blame] | 469 | { |
| 470 | .callback = video_ignore_initial_backlight, |
Ash Willis | 780a6ec | 2013-05-29 01:27:59 +0000 | [diff] [blame] | 471 | .ident = "HP Pavilion g6 Notebook PC", |
| 472 | .matches = { |
| 473 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), |
| 474 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion g6 Notebook PC"), |
| 475 | }, |
| 476 | }, |
| 477 | { |
| 478 | .callback = video_ignore_initial_backlight, |
Alex Hung | 4ef366c | 2013-05-06 08:23:43 +0000 | [diff] [blame] | 479 | .ident = "HP 1000 Notebook PC", |
| 480 | .matches = { |
| 481 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), |
| 482 | DMI_MATCH(DMI_PRODUCT_NAME, "HP 1000 Notebook PC"), |
| 483 | }, |
| 484 | }, |
Alex Hung | fedbe9b | 2013-05-28 02:05:09 +0000 | [diff] [blame] | 485 | { |
| 486 | .callback = video_ignore_initial_backlight, |
| 487 | .ident = "HP Pavilion m4", |
| 488 | .matches = { |
| 489 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), |
| 490 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion m4 Notebook PC"), |
| 491 | }, |
| 492 | }, |
Zhang Rui | 45cb50e | 2009-04-24 12:13:18 -0400 | [diff] [blame] | 493 | {} |
| 494 | }; |
| 495 | |
Danny Baumann | 994fa63 | 2013-03-19 16:22:52 +0000 | [diff] [blame] | 496 | static unsigned long long |
| 497 | acpi_video_bqc_value_to_level(struct acpi_video_device *device, |
| 498 | unsigned long long bqc_value) |
| 499 | { |
| 500 | unsigned long long level; |
| 501 | |
| 502 | if (device->brightness->flags._BQC_use_index) { |
| 503 | /* |
| 504 | * _BQC returns an index that doesn't account for |
| 505 | * the first 2 items with special meaning, so we need |
| 506 | * to compensate for that by offsetting ourselves |
| 507 | */ |
| 508 | if (device->brightness->flags._BCL_reversed) |
| 509 | bqc_value = device->brightness->count - 3 - bqc_value; |
| 510 | |
| 511 | level = device->brightness->levels[bqc_value + 2]; |
| 512 | } else { |
| 513 | level = bqc_value; |
| 514 | } |
| 515 | |
| 516 | level += bqc_offset_aml_bug_workaround; |
| 517 | |
| 518 | return level; |
| 519 | } |
| 520 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 522 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 523 | unsigned long long *level, bool raw) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | { |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 525 | acpi_status status = AE_OK; |
Vladimir Serbinenko | 4e231fa | 2009-06-24 15:17:36 +0800 | [diff] [blame] | 526 | int i; |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 527 | |
Zhang Rui | c60d638 | 2009-03-18 16:27:18 +0800 | [diff] [blame] | 528 | if (device->cap._BQC || device->cap._BCQ) { |
| 529 | char *buf = device->cap._BQC ? "_BQC" : "_BCQ"; |
| 530 | |
| 531 | status = acpi_evaluate_integer(device->dev->handle, buf, |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 532 | NULL, level); |
| 533 | if (ACPI_SUCCESS(status)) { |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 534 | if (raw) { |
| 535 | /* |
| 536 | * Caller has indicated he wants the raw |
| 537 | * value returned by _BQC, so don't furtherly |
| 538 | * mess with the value. |
| 539 | */ |
| 540 | return 0; |
| 541 | } |
| 542 | |
Danny Baumann | 994fa63 | 2013-03-19 16:22:52 +0000 | [diff] [blame] | 543 | *level = acpi_video_bqc_value_to_level(device, *level); |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 544 | |
Vladimir Serbinenko | 4e231fa | 2009-06-24 15:17:36 +0800 | [diff] [blame] | 545 | for (i = 2; i < device->brightness->count; i++) |
| 546 | if (device->brightness->levels[i] == *level) { |
| 547 | device->brightness->curr = *level; |
| 548 | return 0; |
| 549 | } |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 550 | /* |
| 551 | * BQC returned an invalid level. |
| 552 | * Stop using it. |
| 553 | */ |
| 554 | ACPI_WARNING((AE_INFO, |
| 555 | "%s returned an invalid level", |
| 556 | buf)); |
| 557 | device->cap._BQC = device->cap._BCQ = 0; |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 558 | } else { |
| 559 | /* Fixme: |
| 560 | * should we return an error or ignore this failure? |
| 561 | * dev->brightness->curr is a cached value which stores |
| 562 | * the correct current backlight level in most cases. |
| 563 | * ACPI video backlight still works w/ buggy _BQC. |
| 564 | * http://bugzilla.kernel.org/show_bug.cgi?id=12233 |
| 565 | */ |
Zhang Rui | c60d638 | 2009-03-18 16:27:18 +0800 | [diff] [blame] | 566 | ACPI_WARNING((AE_INFO, "Evaluating %s failed", buf)); |
| 567 | device->cap._BQC = device->cap._BCQ = 0; |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 568 | } |
| 569 | } |
| 570 | |
Alexey Starikovskiy | 4500ca8 | 2007-09-03 16:29:58 +0400 | [diff] [blame] | 571 | *level = device->brightness->curr; |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 572 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | } |
| 574 | |
| 575 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 576 | acpi_video_device_EDID(struct acpi_video_device *device, |
| 577 | union acpi_object **edid, ssize_t length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 579 | int status; |
| 580 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 581 | union acpi_object *obj; |
| 582 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
| 583 | struct acpi_object_list args = { 1, &arg0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | |
| 586 | *edid = NULL; |
| 587 | |
| 588 | if (!device) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 589 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | if (length == 128) |
| 591 | arg0.integer.value = 1; |
| 592 | else if (length == 256) |
| 593 | arg0.integer.value = 2; |
| 594 | else |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 595 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 597 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | if (ACPI_FAILURE(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 599 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 601 | obj = buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | |
| 603 | if (obj && obj->type == ACPI_TYPE_BUFFER) |
| 604 | *edid = obj; |
| 605 | else { |
Len Brown | 6468463 | 2006-06-26 23:41:38 -0400 | [diff] [blame] | 606 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | status = -EFAULT; |
| 608 | kfree(obj); |
| 609 | } |
| 610 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 611 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | } |
| 613 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | /* bus */ |
| 615 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | /* |
| 617 | * Arg: |
| 618 | * video : video bus device pointer |
| 619 | * bios_flag : |
| 620 | * 0. The system BIOS should NOT automatically switch(toggle) |
| 621 | * the active display output. |
| 622 | * 1. The system BIOS should automatically switch (toggle) the |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 623 | * active display output. No switch event. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | * 2. The _DGS value should be locked. |
| 625 | * 3. The system BIOS should not automatically switch (toggle) the |
| 626 | * active display output, but instead generate the display switch |
| 627 | * event notify code. |
| 628 | * lcd_flag : |
| 629 | * 0. The system BIOS should automatically control the brightness level |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 630 | * of the LCD when the power changes from AC to DC |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | * 1. The system BIOS should NOT automatically control the brightness |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 632 | * level of the LCD when the power changes from AC to DC. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | * Return Value: |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 634 | * -EINVAL wrong arg. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | */ |
| 636 | |
| 637 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 638 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | { |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 640 | acpi_status status; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 641 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
| 642 | struct acpi_object_list args = { 1, &arg0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | |
Zhang Rui | b037384 | 2012-06-20 09:48:43 +0800 | [diff] [blame] | 644 | if (!video->cap._DOS) |
| 645 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 647 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) |
| 648 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | arg0.integer.value = (lcd_flag << 2) | bios_flag; |
| 650 | video->dos_setting = arg0.integer.value; |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 651 | status = acpi_evaluate_object(video->device->handle, "_DOS", |
| 652 | &args, NULL); |
| 653 | if (ACPI_FAILURE(status)) |
| 654 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 656 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | } |
| 658 | |
| 659 | /* |
Zhang Rui | 935e5f2 | 2008-12-11 16:24:52 -0500 | [diff] [blame] | 660 | * Simple comparison function used to sort backlight levels. |
| 661 | */ |
| 662 | |
| 663 | static int |
| 664 | acpi_video_cmp_level(const void *a, const void *b) |
| 665 | { |
| 666 | return *(int *)a - *(int *)b; |
| 667 | } |
| 668 | |
| 669 | /* |
Aaron Lu | a50188d | 2013-04-22 14:08:32 +0200 | [diff] [blame] | 670 | * Decides if _BQC/_BCQ for this system is usable |
| 671 | * |
| 672 | * We do this by changing the level first and then read out the current |
| 673 | * brightness level, if the value does not match, find out if it is using |
| 674 | * index. If not, clear the _BQC/_BCQ capability. |
| 675 | */ |
| 676 | static int acpi_video_bqc_quirk(struct acpi_video_device *device, |
| 677 | int max_level, int current_level) |
| 678 | { |
| 679 | struct acpi_video_device_brightness *br = device->brightness; |
| 680 | int result; |
| 681 | unsigned long long level; |
| 682 | int test_level; |
| 683 | |
| 684 | /* don't mess with existing known broken systems */ |
| 685 | if (bqc_offset_aml_bug_workaround) |
| 686 | return 0; |
| 687 | |
| 688 | /* |
| 689 | * Some systems always report current brightness level as maximum |
| 690 | * through _BQC, we need to test another value for them. |
| 691 | */ |
Felipe Contreras | b3b301c | 2013-08-03 23:00:25 +0200 | [diff] [blame] | 692 | test_level = current_level == max_level ? br->levels[3] : max_level; |
Aaron Lu | a50188d | 2013-04-22 14:08:32 +0200 | [diff] [blame] | 693 | |
| 694 | result = acpi_video_device_lcd_set_level(device, test_level); |
| 695 | if (result) |
| 696 | return result; |
| 697 | |
| 698 | result = acpi_video_device_lcd_get_level_current(device, &level, true); |
| 699 | if (result) |
| 700 | return result; |
| 701 | |
| 702 | if (level != test_level) { |
| 703 | /* buggy _BQC found, need to find out if it uses index */ |
| 704 | if (level < br->count) { |
| 705 | if (br->flags._BCL_reversed) |
| 706 | level = br->count - 3 - level; |
| 707 | if (br->levels[level + 2] == test_level) |
| 708 | br->flags._BQC_use_index = 1; |
| 709 | } |
| 710 | |
| 711 | if (!br->flags._BQC_use_index) |
| 712 | device->cap._BQC = device->cap._BCQ = 0; |
| 713 | } |
| 714 | |
| 715 | return 0; |
| 716 | } |
| 717 | |
| 718 | |
| 719 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | * Arg: |
| 721 | * device : video output device (LCD, CRT, ..) |
| 722 | * |
| 723 | * Return Value: |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 724 | * Maximum brightness level |
| 725 | * |
| 726 | * Allocate and initialize device->brightness. |
| 727 | */ |
| 728 | |
| 729 | static int |
| 730 | acpi_video_init_brightness(struct acpi_video_device *device) |
| 731 | { |
| 732 | union acpi_object *obj = NULL; |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 733 | int i, max_level = 0, count = 0, level_ac_battery = 0; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 734 | unsigned long long level, level_old; |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 735 | union acpi_object *o; |
| 736 | struct acpi_video_device_brightness *br = NULL; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 737 | int result = -EINVAL; |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 738 | |
| 739 | if (!ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { |
| 740 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available " |
| 741 | "LCD brightness level\n")); |
| 742 | goto out; |
| 743 | } |
| 744 | |
| 745 | if (obj->package.count < 2) |
| 746 | goto out; |
| 747 | |
| 748 | br = kzalloc(sizeof(*br), GFP_KERNEL); |
| 749 | if (!br) { |
| 750 | printk(KERN_ERR "can't allocate memory\n"); |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 751 | result = -ENOMEM; |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 752 | goto out; |
| 753 | } |
| 754 | |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 755 | br->levels = kmalloc((obj->package.count + 2) * sizeof *(br->levels), |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 756 | GFP_KERNEL); |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 757 | if (!br->levels) { |
| 758 | result = -ENOMEM; |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 759 | goto out_free; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 760 | } |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 761 | |
| 762 | for (i = 0; i < obj->package.count; i++) { |
| 763 | o = (union acpi_object *)&obj->package.elements[i]; |
| 764 | if (o->type != ACPI_TYPE_INTEGER) { |
| 765 | printk(KERN_ERR PREFIX "Invalid data\n"); |
| 766 | continue; |
| 767 | } |
| 768 | br->levels[count] = (u32) o->integer.value; |
| 769 | |
| 770 | if (br->levels[count] > max_level) |
| 771 | max_level = br->levels[count]; |
| 772 | count++; |
| 773 | } |
| 774 | |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 775 | /* |
| 776 | * some buggy BIOS don't export the levels |
| 777 | * when machine is on AC/Battery in _BCL package. |
| 778 | * In this case, the first two elements in _BCL packages |
| 779 | * are also supported brightness levels that OS should take care of. |
| 780 | */ |
Zhang Rui | 90af2cf | 2009-04-14 11:02:18 +0800 | [diff] [blame] | 781 | for (i = 2; i < count; i++) { |
| 782 | if (br->levels[i] == br->levels[0]) |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 783 | level_ac_battery++; |
Zhang Rui | 90af2cf | 2009-04-14 11:02:18 +0800 | [diff] [blame] | 784 | if (br->levels[i] == br->levels[1]) |
| 785 | level_ac_battery++; |
| 786 | } |
Zhang Rui | 935e5f2 | 2008-12-11 16:24:52 -0500 | [diff] [blame] | 787 | |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 788 | if (level_ac_battery < 2) { |
| 789 | level_ac_battery = 2 - level_ac_battery; |
| 790 | br->flags._BCL_no_ac_battery_levels = 1; |
| 791 | for (i = (count - 1 + level_ac_battery); i >= 2; i--) |
| 792 | br->levels[i] = br->levels[i - level_ac_battery]; |
| 793 | count += level_ac_battery; |
| 794 | } else if (level_ac_battery > 2) |
Colin Ian King | bf6787e | 2012-11-29 11:53:13 +0000 | [diff] [blame] | 795 | ACPI_ERROR((AE_INFO, "Too many duplicates in _BCL package")); |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 796 | |
Zhang Rui | d80fb99 | 2009-03-18 16:27:14 +0800 | [diff] [blame] | 797 | /* Check if the _BCL package is in a reversed order */ |
| 798 | if (max_level == br->levels[2]) { |
| 799 | br->flags._BCL_reversed = 1; |
| 800 | sort(&br->levels[2], count - 2, sizeof(br->levels[2]), |
| 801 | acpi_video_cmp_level, NULL); |
| 802 | } else if (max_level != br->levels[count - 1]) |
| 803 | ACPI_ERROR((AE_INFO, |
Colin Ian King | bf6787e | 2012-11-29 11:53:13 +0000 | [diff] [blame] | 804 | "Found unordered _BCL package")); |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 805 | |
| 806 | br->count = count; |
| 807 | device->brightness = br; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 808 | |
| 809 | /* Check the input/output of _BQC/_BCL/_BCM */ |
| 810 | if ((max_level < 100) && (max_level <= (count - 2))) |
| 811 | br->flags._BCL_use_index = 1; |
| 812 | |
| 813 | /* |
| 814 | * _BCM is always consistent with _BCL, |
| 815 | * at least for all the laptops we have ever seen. |
| 816 | */ |
| 817 | br->flags._BCM_use_index = br->flags._BCL_use_index; |
| 818 | |
| 819 | /* _BQC uses INDEX while _BCL uses VALUE in some laptops */ |
Zhang Rui | 90c53ca | 2009-08-31 12:39:54 -0400 | [diff] [blame] | 820 | br->curr = level = max_level; |
Zhang Rui | e047cca | 2009-04-09 14:24:35 +0800 | [diff] [blame] | 821 | |
| 822 | if (!device->cap._BQC) |
| 823 | goto set_level; |
| 824 | |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 825 | result = acpi_video_device_lcd_get_level_current(device, |
| 826 | &level_old, true); |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 827 | if (result) |
| 828 | goto out_free_levels; |
| 829 | |
Aaron Lu | a50188d | 2013-04-22 14:08:32 +0200 | [diff] [blame] | 830 | result = acpi_video_bqc_quirk(device, max_level, level_old); |
| 831 | if (result) |
| 832 | goto out_free_levels; |
Zhang Rui | e047cca | 2009-04-09 14:24:35 +0800 | [diff] [blame] | 833 | /* |
Aaron Lu | a50188d | 2013-04-22 14:08:32 +0200 | [diff] [blame] | 834 | * cap._BQC may get cleared due to _BQC is found to be broken |
| 835 | * in acpi_video_bqc_quirk, so check again here. |
Zhang Rui | e047cca | 2009-04-09 14:24:35 +0800 | [diff] [blame] | 836 | */ |
Aaron Lu | a50188d | 2013-04-22 14:08:32 +0200 | [diff] [blame] | 837 | if (!device->cap._BQC) |
| 838 | goto set_level; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 839 | |
Danny Baumann | 994fa63 | 2013-03-19 16:22:52 +0000 | [diff] [blame] | 840 | if (use_bios_initial_backlight) { |
| 841 | level = acpi_video_bqc_value_to_level(device, level_old); |
Zhang Rui | 90c53ca | 2009-08-31 12:39:54 -0400 | [diff] [blame] | 842 | /* |
Danny Baumann | 994fa63 | 2013-03-19 16:22:52 +0000 | [diff] [blame] | 843 | * On some buggy laptops, _BQC returns an uninitialized |
| 844 | * value when invoked for the first time, i.e. |
| 845 | * level_old is invalid (no matter whether it's a level |
| 846 | * or an index). Set the backlight to max_level in this case. |
Zhang Rui | 90c53ca | 2009-08-31 12:39:54 -0400 | [diff] [blame] | 847 | */ |
Danny Baumann | 994fa63 | 2013-03-19 16:22:52 +0000 | [diff] [blame] | 848 | for (i = 2; i < br->count; i++) |
| 849 | if (level_old == br->levels[i]) |
| 850 | break; |
| 851 | if (i == br->count) |
| 852 | level = max_level; |
Zhang Rui | 90c53ca | 2009-08-31 12:39:54 -0400 | [diff] [blame] | 853 | } |
Zhang Rui | e047cca | 2009-04-09 14:24:35 +0800 | [diff] [blame] | 854 | |
Zhang Rui | e047cca | 2009-04-09 14:24:35 +0800 | [diff] [blame] | 855 | set_level: |
Zhang Rui | 90c53ca | 2009-08-31 12:39:54 -0400 | [diff] [blame] | 856 | result = acpi_video_device_lcd_set_level(device, level); |
Zhang Rui | e047cca | 2009-04-09 14:24:35 +0800 | [diff] [blame] | 857 | if (result) |
| 858 | goto out_free_levels; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 859 | |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 860 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
| 861 | "found %d brightness levels\n", count - 2)); |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 862 | kfree(obj); |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 863 | return result; |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 864 | |
| 865 | out_free_levels: |
| 866 | kfree(br->levels); |
| 867 | out_free: |
| 868 | kfree(br); |
| 869 | out: |
| 870 | device->brightness = NULL; |
| 871 | kfree(obj); |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 872 | return result; |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 873 | } |
| 874 | |
| 875 | /* |
| 876 | * Arg: |
| 877 | * device : video output device (LCD, CRT, ..) |
| 878 | * |
| 879 | * Return Value: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | * None |
| 881 | * |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 882 | * Find out all required AML methods defined under the output |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | * device. |
| 884 | */ |
| 885 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 886 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | acpi_handle h_dummy1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 890 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | device->cap._ADR = 1; |
| 892 | } |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 893 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 894 | device->cap._BCL = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | } |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 896 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 897 | device->cap._BCM = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | } |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 899 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
| 900 | device->cap._BQC = 1; |
Zhang Rui | c60d638 | 2009-03-18 16:27:18 +0800 | [diff] [blame] | 901 | else if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCQ", |
| 902 | &h_dummy1))) { |
| 903 | printk(KERN_WARNING FW_BUG "_BCQ is used instead of _BQC\n"); |
| 904 | device->cap._BCQ = 1; |
| 905 | } |
| 906 | |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 907 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 908 | device->cap._DDC = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | |
Rafael J. Wysocki | 8e5c2b7 | 2013-07-25 21:43:39 +0200 | [diff] [blame] | 911 | if (acpi_video_backlight_support()) { |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 912 | struct backlight_properties props; |
Matthew Garrett | 9661e92 | 2011-03-22 16:30:25 -0700 | [diff] [blame] | 913 | struct pci_dev *pdev; |
| 914 | acpi_handle acpi_parent; |
| 915 | struct device *parent = NULL; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 916 | int result; |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 917 | static int count = 0; |
| 918 | char *name; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 919 | |
Rafael J. Wysocki | 168cf0e | 2013-08-22 23:31:38 +0200 | [diff] [blame^] | 920 | result = acpi_video_init_brightness(device); |
| 921 | if (result) |
| 922 | return; |
Julia Lawall | aeb834d | 2010-04-27 14:06:04 -0700 | [diff] [blame] | 923 | name = kasprintf(GFP_KERNEL, "acpi_video%d", count); |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 924 | if (!name) |
| 925 | return; |
Julia Lawall | aeb834d | 2010-04-27 14:06:04 -0700 | [diff] [blame] | 926 | count++; |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 927 | |
Matthew Garrett | 9661e92 | 2011-03-22 16:30:25 -0700 | [diff] [blame] | 928 | acpi_get_parent(device->dev->handle, &acpi_parent); |
| 929 | |
| 930 | pdev = acpi_get_pci_dev(acpi_parent); |
| 931 | if (pdev) { |
| 932 | parent = &pdev->dev; |
| 933 | pci_dev_put(pdev); |
| 934 | } |
| 935 | |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 936 | memset(&props, 0, sizeof(struct backlight_properties)); |
Matthew Garrett | bb7ca74 | 2011-03-22 16:30:21 -0700 | [diff] [blame] | 937 | props.type = BACKLIGHT_FIRMWARE; |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 938 | props.max_brightness = device->brightness->count - 3; |
Matthew Garrett | 9661e92 | 2011-03-22 16:30:25 -0700 | [diff] [blame] | 939 | device->backlight = backlight_device_register(name, |
| 940 | parent, |
| 941 | device, |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 942 | &acpi_backlight_ops, |
| 943 | &props); |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 944 | kfree(name); |
Zhang Rui | e01ce79 | 2009-07-29 08:53:29 +0800 | [diff] [blame] | 945 | if (IS_ERR(device->backlight)) |
| 946 | return; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 947 | |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 948 | /* |
| 949 | * Save current brightness level in case we have to restore it |
| 950 | * before acpi_video_device_lcd_set_level() is called next time. |
| 951 | */ |
| 952 | device->backlight->props.brightness = |
| 953 | acpi_video_get_brightness(device->backlight); |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 954 | |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 955 | device->cooling_dev = thermal_cooling_device_register("LCD", |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 956 | device->dev, &video_cooling_ops); |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 957 | if (IS_ERR(device->cooling_dev)) { |
Dmitry Torokhov | 4b4fe3b | 2009-08-08 00:26:25 -0700 | [diff] [blame] | 958 | /* |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 959 | * Set cooling_dev to NULL so we don't crash trying to |
Dmitry Torokhov | 4b4fe3b | 2009-08-08 00:26:25 -0700 | [diff] [blame] | 960 | * free it. |
| 961 | * Also, why the hell we are returning early and |
| 962 | * not attempt to register video output if cooling |
| 963 | * device registration failed? |
| 964 | * -- dtor |
| 965 | */ |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 966 | device->cooling_dev = NULL; |
Thomas Sujith | 43ff39f | 2008-02-15 18:29:18 -0500 | [diff] [blame] | 967 | return; |
Dmitry Torokhov | 4b4fe3b | 2009-08-08 00:26:25 -0700 | [diff] [blame] | 968 | } |
Thomas Sujith | 43ff39f | 2008-02-15 18:29:18 -0500 | [diff] [blame] | 969 | |
Greg Kroah-Hartman | fc3a882 | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 970 | dev_info(&device->dev->dev, "registered as cooling_device%d\n", |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 971 | device->cooling_dev->id); |
Julia Lawall | 9030062 | 2008-04-11 10:09:24 +0800 | [diff] [blame] | 972 | result = sysfs_create_link(&device->dev->dev.kobj, |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 973 | &device->cooling_dev->device.kobj, |
Julia Lawall | 9030062 | 2008-04-11 10:09:24 +0800 | [diff] [blame] | 974 | "thermal_cooling"); |
| 975 | if (result) |
| 976 | printk(KERN_ERR PREFIX "Create sysfs link\n"); |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 977 | result = sysfs_create_link(&device->cooling_dev->device.kobj, |
Julia Lawall | 9030062 | 2008-04-11 10:09:24 +0800 | [diff] [blame] | 978 | &device->dev->dev.kobj, "device"); |
| 979 | if (result) |
| 980 | printk(KERN_ERR PREFIX "Create sysfs link\n"); |
| 981 | |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 982 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | } |
| 984 | |
| 985 | /* |
| 986 | * Arg: |
| 987 | * device : video output device (VGA) |
| 988 | * |
| 989 | * Return Value: |
| 990 | * None |
| 991 | * |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 992 | * Find out all required AML methods defined under the video bus device. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | */ |
| 994 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 995 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 997 | acpi_handle h_dummy1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 999 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | video->cap._DOS = 1; |
| 1001 | } |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 1002 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | video->cap._DOD = 1; |
| 1004 | } |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 1005 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | video->cap._ROM = 1; |
| 1007 | } |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 1008 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | video->cap._GPD = 1; |
| 1010 | } |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 1011 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | video->cap._SPD = 1; |
| 1013 | } |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 1014 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | video->cap._VPO = 1; |
| 1016 | } |
| 1017 | } |
| 1018 | |
| 1019 | /* |
| 1020 | * Check whether the video bus device has required AML method to |
| 1021 | * support the desired features |
| 1022 | */ |
| 1023 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1024 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1026 | acpi_status status = -ENOENT; |
Alexander Chiang | 1e4cffe | 2009-06-10 19:56:00 +0000 | [diff] [blame] | 1027 | struct pci_dev *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | |
| 1029 | if (!video) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1030 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | |
Alexander Chiang | 1e4cffe | 2009-06-10 19:56:00 +0000 | [diff] [blame] | 1032 | dev = acpi_get_pci_dev(video->device->handle); |
Thomas Renninger | 22c13f9 | 2008-08-01 17:37:54 +0200 | [diff] [blame] | 1033 | if (!dev) |
| 1034 | return -ENODEV; |
Alexander Chiang | 1e4cffe | 2009-06-10 19:56:00 +0000 | [diff] [blame] | 1035 | pci_dev_put(dev); |
Thomas Renninger | 22c13f9 | 2008-08-01 17:37:54 +0200 | [diff] [blame] | 1036 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | /* Since there is no HID, CID and so on for VGA driver, we have |
| 1038 | * to check well known required nodes. |
| 1039 | */ |
| 1040 | |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 1041 | /* Does this device support video switching? */ |
Stefan Bader | 3a1151e | 2009-08-21 11:03:05 +0200 | [diff] [blame] | 1042 | if (video->cap._DOS || video->cap._DOD) { |
| 1043 | if (!video->cap._DOS) { |
| 1044 | printk(KERN_WARNING FW_BUG |
| 1045 | "ACPI(%s) defines _DOD but not _DOS\n", |
| 1046 | acpi_device_bid(video->device)); |
| 1047 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | video->flags.multihead = 1; |
| 1049 | status = 0; |
| 1050 | } |
| 1051 | |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 1052 | /* Does this device support retrieving a video ROM? */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1053 | if (video->cap._ROM) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | video->flags.rom = 1; |
| 1055 | status = 0; |
| 1056 | } |
| 1057 | |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 1058 | /* Does this device support configuring which video device to POST? */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1059 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | video->flags.post = 1; |
| 1061 | status = 0; |
| 1062 | } |
| 1063 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1064 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | } |
| 1066 | |
| 1067 | /* -------------------------------------------------------------------------- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | Driver Interface |
| 1069 | -------------------------------------------------------------------------- */ |
| 1070 | |
| 1071 | /* device interface */ |
Rui Zhang | 82cae99 | 2007-01-03 23:40:53 -0500 | [diff] [blame] | 1072 | static struct acpi_video_device_attrib* |
| 1073 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) |
| 1074 | { |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1075 | struct acpi_video_enumerated_device *ids; |
| 1076 | int i; |
Rui Zhang | 82cae99 | 2007-01-03 23:40:53 -0500 | [diff] [blame] | 1077 | |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1078 | for (i = 0; i < video->attached_count; i++) { |
| 1079 | ids = &video->attached_array[i]; |
| 1080 | if ((ids->value.int_val & 0xffff) == device_id) |
| 1081 | return &ids->value.attrib; |
| 1082 | } |
| 1083 | |
Rui Zhang | 82cae99 | 2007-01-03 23:40:53 -0500 | [diff] [blame] | 1084 | return NULL; |
| 1085 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | |
| 1087 | static int |
Matthew Garrett | e92a716 | 2010-01-12 14:17:03 -0500 | [diff] [blame] | 1088 | acpi_video_get_device_type(struct acpi_video_bus *video, |
| 1089 | unsigned long device_id) |
| 1090 | { |
| 1091 | struct acpi_video_enumerated_device *ids; |
| 1092 | int i; |
| 1093 | |
| 1094 | for (i = 0; i < video->attached_count; i++) { |
| 1095 | ids = &video->attached_array[i]; |
| 1096 | if ((ids->value.int_val & 0xffff) == device_id) |
| 1097 | return ids->value.int_val; |
| 1098 | } |
| 1099 | |
| 1100 | return 0; |
| 1101 | } |
| 1102 | |
| 1103 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1104 | acpi_video_bus_get_one_device(struct acpi_device *device, |
| 1105 | struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | { |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 1107 | unsigned long long device_id; |
Matthew Garrett | e92a716 | 2010-01-12 14:17:03 -0500 | [diff] [blame] | 1108 | int status, device_type; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1109 | struct acpi_video_device *data; |
Rui Zhang | 82cae99 | 2007-01-03 23:40:53 -0500 | [diff] [blame] | 1110 | struct acpi_video_device_attrib* attribute; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1112 | status = |
| 1113 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1114 | /* Some device omits _ADR, we skip them instead of fail */ |
| 1115 | if (ACPI_FAILURE(status)) |
| 1116 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1118 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
| 1119 | if (!data) |
| 1120 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1122 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
| 1123 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); |
| 1124 | device->driver_data = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1126 | data->device_id = device_id; |
| 1127 | data->video = video; |
| 1128 | data->dev = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1130 | attribute = acpi_video_get_device_attr(video, device_id); |
Rui Zhang | 82cae99 | 2007-01-03 23:40:53 -0500 | [diff] [blame] | 1131 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1132 | if((attribute != NULL) && attribute->device_id_scheme) { |
| 1133 | switch (attribute->display_type) { |
| 1134 | case ACPI_VIDEO_DISPLAY_CRT: |
| 1135 | data->flags.crt = 1; |
| 1136 | break; |
| 1137 | case ACPI_VIDEO_DISPLAY_TV: |
| 1138 | data->flags.tvout = 1; |
| 1139 | break; |
| 1140 | case ACPI_VIDEO_DISPLAY_DVI: |
| 1141 | data->flags.dvi = 1; |
| 1142 | break; |
| 1143 | case ACPI_VIDEO_DISPLAY_LCD: |
| 1144 | data->flags.lcd = 1; |
| 1145 | break; |
| 1146 | default: |
| 1147 | data->flags.unknown = 1; |
| 1148 | break; |
| 1149 | } |
| 1150 | if(attribute->bios_can_detect) |
| 1151 | data->flags.bios = 1; |
| 1152 | } else { |
| 1153 | /* Check for legacy IDs */ |
| 1154 | device_type = acpi_video_get_device_type(video, device_id); |
| 1155 | /* Ignore bits 16 and 18-20 */ |
| 1156 | switch (device_type & 0xffe2ffff) { |
Matthew Garrett | e92a716 | 2010-01-12 14:17:03 -0500 | [diff] [blame] | 1157 | case ACPI_VIDEO_DISPLAY_LEGACY_MONITOR: |
| 1158 | data->flags.crt = 1; |
| 1159 | break; |
| 1160 | case ACPI_VIDEO_DISPLAY_LEGACY_PANEL: |
| 1161 | data->flags.lcd = 1; |
| 1162 | break; |
| 1163 | case ACPI_VIDEO_DISPLAY_LEGACY_TV: |
| 1164 | data->flags.tvout = 1; |
| 1165 | break; |
| 1166 | default: |
| 1167 | data->flags.unknown = 1; |
Matthew Garrett | e92a716 | 2010-01-12 14:17:03 -0500 | [diff] [blame] | 1168 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | } |
| 1170 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1171 | acpi_video_device_bind(video, data); |
| 1172 | acpi_video_device_find_cap(data); |
| 1173 | |
| 1174 | status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, |
| 1175 | acpi_video_device_notify, data); |
| 1176 | if (ACPI_FAILURE(status)) |
| 1177 | dev_err(&device->dev, "Error installing notify handler\n"); |
| 1178 | else |
| 1179 | data->flags.notify = 1; |
| 1180 | |
| 1181 | mutex_lock(&video->device_list_lock); |
| 1182 | list_add_tail(&data->entry, &video->video_device_list); |
| 1183 | mutex_unlock(&video->device_list_lock); |
| 1184 | |
| 1185 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | } |
| 1187 | |
| 1188 | /* |
| 1189 | * Arg: |
| 1190 | * video : video bus device |
| 1191 | * |
| 1192 | * Return: |
| 1193 | * none |
| 1194 | * |
| 1195 | * Enumerate the video device list of the video bus, |
| 1196 | * bind the ids with the corresponding video devices |
| 1197 | * under the video bus. |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1198 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1200 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | { |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1202 | struct acpi_video_device *dev; |
| 1203 | |
Dmitry Torokhov | bbac81f | 2007-11-05 11:43:32 -0500 | [diff] [blame] | 1204 | mutex_lock(&video->device_list_lock); |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1205 | |
| 1206 | list_for_each_entry(dev, &video->video_device_list, entry) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1207 | acpi_video_device_bind(video, dev); |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1208 | |
Dmitry Torokhov | bbac81f | 2007-11-05 11:43:32 -0500 | [diff] [blame] | 1209 | mutex_unlock(&video->device_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | } |
| 1211 | |
| 1212 | /* |
| 1213 | * Arg: |
| 1214 | * video : video bus device |
| 1215 | * device : video output device under the video |
| 1216 | * bus |
| 1217 | * |
| 1218 | * Return: |
| 1219 | * none |
| 1220 | * |
| 1221 | * Bind the ids with the corresponding video devices |
| 1222 | * under the video bus. |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1223 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | |
| 1225 | static void |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1226 | acpi_video_device_bind(struct acpi_video_bus *video, |
| 1227 | struct acpi_video_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | { |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1229 | struct acpi_video_enumerated_device *ids; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1230 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1232 | for (i = 0; i < video->attached_count; i++) { |
| 1233 | ids = &video->attached_array[i]; |
| 1234 | if (device->device_id == (ids->value.int_val & 0xffff)) { |
| 1235 | ids->bind_info = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); |
| 1237 | } |
| 1238 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | } |
| 1240 | |
| 1241 | /* |
| 1242 | * Arg: |
| 1243 | * video : video bus device |
| 1244 | * |
| 1245 | * Return: |
| 1246 | * < 0 : error |
| 1247 | * |
| 1248 | * Call _DOD to enumerate all devices attached to display adapter |
| 1249 | * |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1250 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | |
| 1252 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) |
| 1253 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1254 | int status; |
| 1255 | int count; |
| 1256 | int i; |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1257 | struct acpi_video_enumerated_device *active_list; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1258 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 1259 | union acpi_object *dod = NULL; |
| 1260 | union acpi_object *obj; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 1262 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | if (!ACPI_SUCCESS(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 1264 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1265 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | } |
| 1267 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 1268 | dod = buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 1270 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | status = -EFAULT; |
| 1272 | goto out; |
| 1273 | } |
| 1274 | |
| 1275 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1276 | dod->package.count)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1278 | active_list = kcalloc(1 + dod->package.count, |
| 1279 | sizeof(struct acpi_video_enumerated_device), |
| 1280 | GFP_KERNEL); |
| 1281 | if (!active_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | status = -ENOMEM; |
| 1283 | goto out; |
| 1284 | } |
| 1285 | |
| 1286 | count = 0; |
| 1287 | for (i = 0; i < dod->package.count; i++) { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 1288 | obj = &dod->package.elements[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | |
| 1290 | if (obj->type != ACPI_TYPE_INTEGER) { |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1291 | printk(KERN_ERR PREFIX |
| 1292 | "Invalid _DOD data in element %d\n", i); |
| 1293 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | } |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1295 | |
| 1296 | active_list[count].value.int_val = obj->integer.value; |
| 1297 | active_list[count].bind_info = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1298 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
| 1299 | (int)obj->integer.value)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | count++; |
| 1301 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 1303 | kfree(video->attached_array); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1304 | |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1305 | video->attached_array = active_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | video->attached_count = count; |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1307 | |
| 1308 | out: |
Len Brown | 02438d8 | 2006-06-30 03:19:10 -0400 | [diff] [blame] | 1309 | kfree(buffer.pointer); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1310 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | } |
| 1312 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1313 | static int |
| 1314 | acpi_video_get_next_level(struct acpi_video_device *device, |
| 1315 | u32 level_current, u32 event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | { |
Alexey Starikovskiy | 63f0edf | 2007-09-03 16:30:08 +0400 | [diff] [blame] | 1317 | int min, max, min_above, max_below, i, l, delta = 255; |
Thomas Tuttle | f471518 | 2006-12-19 12:56:14 -0800 | [diff] [blame] | 1318 | max = max_below = 0; |
| 1319 | min = min_above = 255; |
Alexey Starikovskiy | 63f0edf | 2007-09-03 16:30:08 +0400 | [diff] [blame] | 1320 | /* Find closest level to level_current */ |
Zhao Yakui | 0a3db1c | 2009-02-02 11:33:41 +0800 | [diff] [blame] | 1321 | for (i = 2; i < device->brightness->count; i++) { |
Alexey Starikovskiy | 63f0edf | 2007-09-03 16:30:08 +0400 | [diff] [blame] | 1322 | l = device->brightness->levels[i]; |
| 1323 | if (abs(l - level_current) < abs(delta)) { |
| 1324 | delta = l - level_current; |
| 1325 | if (!delta) |
| 1326 | break; |
| 1327 | } |
| 1328 | } |
| 1329 | /* Ajust level_current to closest available level */ |
| 1330 | level_current += delta; |
Zhao Yakui | 0a3db1c | 2009-02-02 11:33:41 +0800 | [diff] [blame] | 1331 | for (i = 2; i < device->brightness->count; i++) { |
Thomas Tuttle | f471518 | 2006-12-19 12:56:14 -0800 | [diff] [blame] | 1332 | l = device->brightness->levels[i]; |
| 1333 | if (l < min) |
| 1334 | min = l; |
| 1335 | if (l > max) |
| 1336 | max = l; |
| 1337 | if (l < min_above && l > level_current) |
| 1338 | min_above = l; |
| 1339 | if (l > max_below && l < level_current) |
| 1340 | max_below = l; |
| 1341 | } |
| 1342 | |
| 1343 | switch (event) { |
| 1344 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: |
| 1345 | return (level_current < max) ? min_above : min; |
| 1346 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: |
| 1347 | return (level_current < max) ? min_above : max; |
| 1348 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: |
| 1349 | return (level_current > min) ? max_below : min; |
| 1350 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: |
| 1351 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: |
| 1352 | return 0; |
| 1353 | default: |
| 1354 | return level_current; |
| 1355 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | } |
| 1357 | |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1358 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1359 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1360 | { |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 1361 | unsigned long long level_current, level_next; |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1362 | int result = -EINVAL; |
| 1363 | |
Rafael J. Wysocki | 8e5c2b7 | 2013-07-25 21:43:39 +0200 | [diff] [blame] | 1364 | /* no warning message if acpi_backlight=vendor is used */ |
| 1365 | if (!acpi_video_backlight_support()) |
Zhang Rui | 28c32e9 | 2009-07-13 10:33:24 +0800 | [diff] [blame] | 1366 | return 0; |
| 1367 | |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 1368 | if (!device->brightness) |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1369 | goto out; |
| 1370 | |
| 1371 | result = acpi_video_device_lcd_get_level_current(device, |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 1372 | &level_current, |
| 1373 | false); |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1374 | if (result) |
| 1375 | goto out; |
| 1376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | level_next = acpi_video_get_next_level(device, level_current, event); |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1378 | |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 1379 | result = acpi_video_device_lcd_set_level(device, level_next); |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1380 | |
Matthew Garrett | 3634274 | 2009-07-14 17:06:03 +0100 | [diff] [blame] | 1381 | if (!result) |
| 1382 | backlight_force_update(device->backlight, |
| 1383 | BACKLIGHT_UPDATE_HOTKEY); |
| 1384 | |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1385 | out: |
| 1386 | if (result) |
| 1387 | printk(KERN_ERR PREFIX "Failed to switch the brightness\n"); |
| 1388 | |
| 1389 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | } |
| 1391 | |
Matthew Garrett | e92a716 | 2010-01-12 14:17:03 -0500 | [diff] [blame] | 1392 | int acpi_video_get_edid(struct acpi_device *device, int type, int device_id, |
| 1393 | void **edid) |
| 1394 | { |
| 1395 | struct acpi_video_bus *video; |
| 1396 | struct acpi_video_device *video_device; |
| 1397 | union acpi_object *buffer = NULL; |
| 1398 | acpi_status status; |
| 1399 | int i, length; |
| 1400 | |
| 1401 | if (!device || !acpi_driver_data(device)) |
| 1402 | return -EINVAL; |
| 1403 | |
| 1404 | video = acpi_driver_data(device); |
| 1405 | |
| 1406 | for (i = 0; i < video->attached_count; i++) { |
| 1407 | video_device = video->attached_array[i].bind_info; |
| 1408 | length = 256; |
| 1409 | |
| 1410 | if (!video_device) |
| 1411 | continue; |
| 1412 | |
Zhang Rui | 8206955 | 2010-12-06 15:04:24 +0800 | [diff] [blame] | 1413 | if (!video_device->cap._DDC) |
| 1414 | continue; |
| 1415 | |
Matthew Garrett | e92a716 | 2010-01-12 14:17:03 -0500 | [diff] [blame] | 1416 | if (type) { |
| 1417 | switch (type) { |
| 1418 | case ACPI_VIDEO_DISPLAY_CRT: |
| 1419 | if (!video_device->flags.crt) |
| 1420 | continue; |
| 1421 | break; |
| 1422 | case ACPI_VIDEO_DISPLAY_TV: |
| 1423 | if (!video_device->flags.tvout) |
| 1424 | continue; |
| 1425 | break; |
| 1426 | case ACPI_VIDEO_DISPLAY_DVI: |
| 1427 | if (!video_device->flags.dvi) |
| 1428 | continue; |
| 1429 | break; |
| 1430 | case ACPI_VIDEO_DISPLAY_LCD: |
| 1431 | if (!video_device->flags.lcd) |
| 1432 | continue; |
| 1433 | break; |
| 1434 | } |
| 1435 | } else if (video_device->device_id != device_id) { |
| 1436 | continue; |
| 1437 | } |
| 1438 | |
| 1439 | status = acpi_video_device_EDID(video_device, &buffer, length); |
| 1440 | |
| 1441 | if (ACPI_FAILURE(status) || !buffer || |
| 1442 | buffer->type != ACPI_TYPE_BUFFER) { |
| 1443 | length = 128; |
| 1444 | status = acpi_video_device_EDID(video_device, &buffer, |
| 1445 | length); |
| 1446 | if (ACPI_FAILURE(status) || !buffer || |
| 1447 | buffer->type != ACPI_TYPE_BUFFER) { |
| 1448 | continue; |
| 1449 | } |
| 1450 | } |
| 1451 | |
| 1452 | *edid = buffer->buffer.pointer; |
| 1453 | return length; |
| 1454 | } |
| 1455 | |
| 1456 | return -ENODEV; |
| 1457 | } |
| 1458 | EXPORT_SYMBOL(acpi_video_get_edid); |
| 1459 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1461 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
| 1462 | struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | { |
Igor Murzov | fba4e08 | 2012-10-13 04:41:25 +0400 | [diff] [blame] | 1464 | int status = 0; |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1465 | struct acpi_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | |
Igor Murzov | fba4e08 | 2012-10-13 04:41:25 +0400 | [diff] [blame] | 1467 | /* |
| 1468 | * There are systems where video module known to work fine regardless |
| 1469 | * of broken _DOD and ignoring returned value here doesn't cause |
| 1470 | * any issues later. |
| 1471 | */ |
| 1472 | acpi_video_device_enumerate(video); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1474 | list_for_each_entry(dev, &device->children, node) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | |
| 1476 | status = acpi_video_bus_get_one_device(dev, video); |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 1477 | if (status) { |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1478 | dev_err(&dev->dev, "Can't attach device\n"); |
| 1479 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1480 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | } |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1482 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | } |
| 1484 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1485 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1486 | { |
Karol Kozimor | 031ec77 | 2005-07-30 04:18:00 -0400 | [diff] [blame] | 1487 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | |
| 1489 | if (!device || !device->video) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1490 | return -ENOENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1492 | if (device->flags.notify) { |
| 1493 | status = acpi_remove_notify_handler(device->dev->handle, |
| 1494 | ACPI_DEVICE_NOTIFY, acpi_video_device_notify); |
| 1495 | if (ACPI_FAILURE(status)) |
| 1496 | dev_err(&device->dev->dev, |
| 1497 | "Can't remove video notify handler\n"); |
Andi Kleen | cfa806f | 2010-07-20 15:18:36 -0700 | [diff] [blame] | 1498 | } |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1499 | |
Keith Packard | e29b3ee | 2009-08-06 15:57:54 -0700 | [diff] [blame] | 1500 | if (device->backlight) { |
Keith Packard | e29b3ee | 2009-08-06 15:57:54 -0700 | [diff] [blame] | 1501 | backlight_device_unregister(device->backlight); |
| 1502 | device->backlight = NULL; |
| 1503 | } |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 1504 | if (device->cooling_dev) { |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 1505 | sysfs_remove_link(&device->dev->dev.kobj, |
| 1506 | "thermal_cooling"); |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 1507 | sysfs_remove_link(&device->cooling_dev->device.kobj, |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 1508 | "device"); |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 1509 | thermal_cooling_device_unregister(device->cooling_dev); |
| 1510 | device->cooling_dev = NULL; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 1511 | } |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1512 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1513 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | } |
| 1515 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1516 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1518 | int status; |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1519 | struct acpi_video_device *dev, *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | |
Dmitry Torokhov | bbac81f | 2007-11-05 11:43:32 -0500 | [diff] [blame] | 1521 | mutex_lock(&video->device_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1523 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1525 | status = acpi_video_bus_put_one_device(dev); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1526 | if (ACPI_FAILURE(status)) |
| 1527 | printk(KERN_WARNING PREFIX |
| 1528 | "hhuuhhuu bug in acpi video driver.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1530 | if (dev->brightness) { |
| 1531 | kfree(dev->brightness->levels); |
| 1532 | kfree(dev->brightness); |
| 1533 | } |
| 1534 | list_del(&dev->entry); |
| 1535 | kfree(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | } |
| 1537 | |
Dmitry Torokhov | bbac81f | 2007-11-05 11:43:32 -0500 | [diff] [blame] | 1538 | mutex_unlock(&video->device_list_lock); |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1539 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1540 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | } |
| 1542 | |
| 1543 | /* acpi_video interface */ |
| 1544 | |
Aaron Lu | efaa14c | 2013-07-16 13:08:05 +0800 | [diff] [blame] | 1545 | /* |
| 1546 | * Win8 requires setting bit2 of _DOS to let firmware know it shouldn't |
| 1547 | * preform any automatic brightness change on receiving a notification. |
| 1548 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1549 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1550 | { |
Aaron Lu | efaa14c | 2013-07-16 13:08:05 +0800 | [diff] [blame] | 1551 | return acpi_video_bus_DOS(video, 0, |
| 1552 | acpi_video_backlight_quirks() ? 1 : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | } |
| 1554 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1555 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | { |
Aaron Lu | efaa14c | 2013-07-16 13:08:05 +0800 | [diff] [blame] | 1557 | return acpi_video_bus_DOS(video, 0, |
| 1558 | acpi_video_backlight_quirks() ? 0 : 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1559 | } |
| 1560 | |
Bjorn Helgaas | 7015558 | 2009-04-07 15:37:11 +0000 | [diff] [blame] | 1561 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | { |
Bjorn Helgaas | 7015558 | 2009-04-07 15:37:11 +0000 | [diff] [blame] | 1563 | struct acpi_video_bus *video = acpi_driver_data(device); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1564 | struct input_dev *input; |
Matthew Garrett | 17c452f | 2009-12-11 17:40:46 -0500 | [diff] [blame] | 1565 | int keycode = 0; |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1566 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | if (!video) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1568 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1569 | |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1570 | input = video->input; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | |
| 1572 | switch (event) { |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 1573 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1574 | * most likely via hotkey. */ |
Len Brown | 14e04fb | 2007-08-23 15:20:26 -0400 | [diff] [blame] | 1575 | acpi_bus_generate_proc_event(device, event, 0); |
Luca Tettamanti | 8a37c65 | 2012-08-02 15:30:27 +0200 | [diff] [blame] | 1576 | keycode = KEY_SWITCHVIDEOMODE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | break; |
| 1578 | |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 1579 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | * connector. */ |
| 1581 | acpi_video_device_enumerate(video); |
| 1582 | acpi_video_device_rebind(video); |
Len Brown | 14e04fb | 2007-08-23 15:20:26 -0400 | [diff] [blame] | 1583 | acpi_bus_generate_proc_event(device, event, 0); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1584 | keycode = KEY_SWITCHVIDEOMODE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | break; |
| 1586 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1587 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
Len Brown | 25c87f7 | 2007-08-25 01:44:01 -0400 | [diff] [blame] | 1588 | acpi_bus_generate_proc_event(device, event, 0); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1589 | keycode = KEY_SWITCHVIDEOMODE; |
| 1590 | break; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1591 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
Len Brown | 25c87f7 | 2007-08-25 01:44:01 -0400 | [diff] [blame] | 1592 | acpi_bus_generate_proc_event(device, event, 0); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1593 | keycode = KEY_VIDEO_NEXT; |
| 1594 | break; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1595 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
Len Brown | 14e04fb | 2007-08-23 15:20:26 -0400 | [diff] [blame] | 1596 | acpi_bus_generate_proc_event(device, event, 0); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1597 | keycode = KEY_VIDEO_PREV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | break; |
| 1599 | |
| 1600 | default: |
| 1601 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1602 | "Unsupported event [0x%x]\n", event)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | break; |
| 1604 | } |
| 1605 | |
Luca Tettamanti | 8a37c65 | 2012-08-02 15:30:27 +0200 | [diff] [blame] | 1606 | if (acpi_notifier_call_chain(device, event, 0)) |
| 1607 | /* Something vetoed the keypress. */ |
| 1608 | keycode = 0; |
Matthew Garrett | 17c452f | 2009-12-11 17:40:46 -0500 | [diff] [blame] | 1609 | |
| 1610 | if (keycode) { |
| 1611 | input_report_key(input, keycode, 1); |
| 1612 | input_sync(input); |
| 1613 | input_report_key(input, keycode, 0); |
| 1614 | input_sync(input); |
| 1615 | } |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1616 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1617 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1618 | } |
| 1619 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1620 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 1622 | struct acpi_video_device *video_device = data; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1623 | struct acpi_device *device = NULL; |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1624 | struct acpi_video_bus *bus; |
| 1625 | struct input_dev *input; |
Matthew Garrett | 17c452f | 2009-12-11 17:40:46 -0500 | [diff] [blame] | 1626 | int keycode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1627 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | if (!video_device) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1629 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1630 | |
Patrick Mochel | e6afa0d | 2006-05-19 16:54:40 -0400 | [diff] [blame] | 1631 | device = video_device->dev; |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1632 | bus = video_device->video; |
| 1633 | input = bus->input; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1634 | |
| 1635 | switch (event) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1636 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
Zhang Rui | 8a681a4 | 2008-01-25 14:47:49 +0800 | [diff] [blame] | 1637 | if (brightness_switch_enabled) |
| 1638 | acpi_video_switch_brightness(video_device, event); |
Len Brown | 25c87f7 | 2007-08-25 01:44:01 -0400 | [diff] [blame] | 1639 | acpi_bus_generate_proc_event(device, event, 0); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1640 | keycode = KEY_BRIGHTNESS_CYCLE; |
| 1641 | break; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1642 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
Zhang Rui | 8a681a4 | 2008-01-25 14:47:49 +0800 | [diff] [blame] | 1643 | if (brightness_switch_enabled) |
| 1644 | acpi_video_switch_brightness(video_device, event); |
Len Brown | 25c87f7 | 2007-08-25 01:44:01 -0400 | [diff] [blame] | 1645 | acpi_bus_generate_proc_event(device, event, 0); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1646 | keycode = KEY_BRIGHTNESSUP; |
| 1647 | break; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1648 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
Zhang Rui | 8a681a4 | 2008-01-25 14:47:49 +0800 | [diff] [blame] | 1649 | if (brightness_switch_enabled) |
| 1650 | acpi_video_switch_brightness(video_device, event); |
Len Brown | 25c87f7 | 2007-08-25 01:44:01 -0400 | [diff] [blame] | 1651 | acpi_bus_generate_proc_event(device, event, 0); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1652 | keycode = KEY_BRIGHTNESSDOWN; |
| 1653 | break; |
Justin P. Mattock | 70f23fd | 2011-05-10 10:16:21 +0200 | [diff] [blame] | 1654 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightness */ |
Zhang Rui | 8a681a4 | 2008-01-25 14:47:49 +0800 | [diff] [blame] | 1655 | if (brightness_switch_enabled) |
| 1656 | acpi_video_switch_brightness(video_device, event); |
Len Brown | 25c87f7 | 2007-08-25 01:44:01 -0400 | [diff] [blame] | 1657 | acpi_bus_generate_proc_event(device, event, 0); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1658 | keycode = KEY_BRIGHTNESS_ZERO; |
| 1659 | break; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1660 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
Zhang Rui | 8a681a4 | 2008-01-25 14:47:49 +0800 | [diff] [blame] | 1661 | if (brightness_switch_enabled) |
| 1662 | acpi_video_switch_brightness(video_device, event); |
Len Brown | 14e04fb | 2007-08-23 15:20:26 -0400 | [diff] [blame] | 1663 | acpi_bus_generate_proc_event(device, event, 0); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1664 | keycode = KEY_DISPLAY_OFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | break; |
| 1666 | default: |
| 1667 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1668 | "Unsupported event [0x%x]\n", event)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1669 | break; |
| 1670 | } |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1671 | |
Zhang Rui | 7761f63 | 2008-01-25 14:48:12 +0800 | [diff] [blame] | 1672 | acpi_notifier_call_chain(device, event, 0); |
Matthew Garrett | 17c452f | 2009-12-11 17:40:46 -0500 | [diff] [blame] | 1673 | |
| 1674 | if (keycode) { |
| 1675 | input_report_key(input, keycode, 1); |
| 1676 | input_sync(input); |
| 1677 | input_report_key(input, keycode, 0); |
| 1678 | input_sync(input); |
| 1679 | } |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1680 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1681 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | } |
| 1683 | |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1684 | static int acpi_video_resume(struct notifier_block *nb, |
| 1685 | unsigned long val, void *ign) |
Matthew Garrett | 863c149 | 2008-02-04 23:31:24 -0800 | [diff] [blame] | 1686 | { |
| 1687 | struct acpi_video_bus *video; |
| 1688 | struct acpi_video_device *video_device; |
| 1689 | int i; |
| 1690 | |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1691 | switch (val) { |
| 1692 | case PM_HIBERNATION_PREPARE: |
| 1693 | case PM_SUSPEND_PREPARE: |
| 1694 | case PM_RESTORE_PREPARE: |
| 1695 | return NOTIFY_DONE; |
| 1696 | } |
Matthew Garrett | 863c149 | 2008-02-04 23:31:24 -0800 | [diff] [blame] | 1697 | |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1698 | video = container_of(nb, struct acpi_video_bus, pm_nb); |
| 1699 | |
| 1700 | dev_info(&video->device->dev, "Restoring backlight state\n"); |
Matthew Garrett | 863c149 | 2008-02-04 23:31:24 -0800 | [diff] [blame] | 1701 | |
| 1702 | for (i = 0; i < video->attached_count; i++) { |
| 1703 | video_device = video->attached_array[i].bind_info; |
| 1704 | if (video_device && video_device->backlight) |
| 1705 | acpi_video_set_brightness(video_device->backlight); |
| 1706 | } |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1707 | |
| 1708 | return NOTIFY_OK; |
Matthew Garrett | 863c149 | 2008-02-04 23:31:24 -0800 | [diff] [blame] | 1709 | } |
| 1710 | |
Zhang Rui | c504f8c | 2009-12-30 15:59:23 +0800 | [diff] [blame] | 1711 | static acpi_status |
| 1712 | acpi_video_bus_match(acpi_handle handle, u32 level, void *context, |
| 1713 | void **return_value) |
| 1714 | { |
| 1715 | struct acpi_device *device = context; |
| 1716 | struct acpi_device *sibling; |
| 1717 | int result; |
| 1718 | |
| 1719 | if (handle == device->handle) |
| 1720 | return AE_CTRL_TERMINATE; |
| 1721 | |
| 1722 | result = acpi_bus_get_device(handle, &sibling); |
| 1723 | if (result) |
| 1724 | return AE_OK; |
| 1725 | |
| 1726 | if (!strcmp(acpi_device_name(sibling), ACPI_VIDEO_BUS_NAME)) |
| 1727 | return AE_ALREADY_EXISTS; |
| 1728 | |
| 1729 | return AE_OK; |
| 1730 | } |
| 1731 | |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1732 | static int instance; |
| 1733 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1734 | static int acpi_video_bus_add(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | { |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1736 | struct acpi_video_bus *video; |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1737 | struct input_dev *input; |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1738 | int error; |
Zhang Rui | c504f8c | 2009-12-30 15:59:23 +0800 | [diff] [blame] | 1739 | acpi_status status; |
| 1740 | |
| 1741 | status = acpi_walk_namespace(ACPI_TYPE_DEVICE, |
| 1742 | device->parent->handle, 1, |
| 1743 | acpi_video_bus_match, NULL, |
| 1744 | device, NULL); |
| 1745 | if (status == AE_ALREADY_EXISTS) { |
| 1746 | printk(KERN_WARNING FW_BUG |
| 1747 | "Duplicate ACPI video bus devices for the" |
| 1748 | " same VGA controller, please try module " |
| 1749 | "parameter \"video.allow_duplicates=1\"" |
| 1750 | "if the current driver doesn't work.\n"); |
| 1751 | if (!allow_duplicates) |
| 1752 | return -ENODEV; |
| 1753 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1754 | |
Burman Yan | 36bcbec | 2006-12-19 12:56:11 -0800 | [diff] [blame] | 1755 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1756 | if (!video) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1757 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | |
Zhang Rui | e6d9da1 | 2007-08-25 02:23:31 -0400 | [diff] [blame] | 1759 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
| 1760 | if (!strcmp(device->pnp.bus_id, "VID")) { |
| 1761 | if (instance) |
| 1762 | device->pnp.bus_id[3] = '0' + instance; |
| 1763 | instance ++; |
| 1764 | } |
Zhao Yakui | f3b39f1 | 2009-02-02 22:55:01 -0500 | [diff] [blame] | 1765 | /* a hack to fix the duplicate name "VGA" problem on Pa 3553 */ |
| 1766 | if (!strcmp(device->pnp.bus_id, "VGA")) { |
| 1767 | if (instance) |
| 1768 | device->pnp.bus_id[3] = '0' + instance; |
| 1769 | instance++; |
| 1770 | } |
Zhang Rui | e6d9da1 | 2007-08-25 02:23:31 -0400 | [diff] [blame] | 1771 | |
Patrick Mochel | e6afa0d | 2006-05-19 16:54:40 -0400 | [diff] [blame] | 1772 | video->device = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1773 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
| 1774 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); |
Pavel Machek | db89b4f | 2008-09-22 14:37:34 -0700 | [diff] [blame] | 1775 | device->driver_data = video; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | |
| 1777 | acpi_video_bus_find_cap(video); |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1778 | error = acpi_video_bus_check(video); |
| 1779 | if (error) |
| 1780 | goto err_free_video; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | |
Dmitry Torokhov | bbac81f | 2007-11-05 11:43:32 -0500 | [diff] [blame] | 1782 | mutex_init(&video->device_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1783 | INIT_LIST_HEAD(&video->video_device_list); |
| 1784 | |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 1785 | error = acpi_video_bus_get_devices(video, device); |
| 1786 | if (error) |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1787 | goto err_put_video; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1789 | video->input = input = input_allocate_device(); |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1790 | if (!input) { |
| 1791 | error = -ENOMEM; |
Igor Murzov | b60e7f6 | 2012-03-30 21:32:09 +0400 | [diff] [blame] | 1792 | goto err_put_video; |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1793 | } |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1794 | |
Igor Murzov | b60e7f6 | 2012-03-30 21:32:09 +0400 | [diff] [blame] | 1795 | error = acpi_video_bus_start_devices(video); |
| 1796 | if (error) |
| 1797 | goto err_free_input_dev; |
| 1798 | |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1799 | snprintf(video->phys, sizeof(video->phys), |
| 1800 | "%s/video/input0", acpi_device_hid(video->device)); |
| 1801 | |
| 1802 | input->name = acpi_device_name(video->device); |
| 1803 | input->phys = video->phys; |
| 1804 | input->id.bustype = BUS_HOST; |
| 1805 | input->id.product = 0x06; |
Dmitry Torokhov | 91c05c6 | 2007-11-05 11:43:29 -0500 | [diff] [blame] | 1806 | input->dev.parent = &device->dev; |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1807 | input->evbit[0] = BIT(EV_KEY); |
| 1808 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); |
| 1809 | set_bit(KEY_VIDEO_NEXT, input->keybit); |
| 1810 | set_bit(KEY_VIDEO_PREV, input->keybit); |
| 1811 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); |
| 1812 | set_bit(KEY_BRIGHTNESSUP, input->keybit); |
| 1813 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); |
| 1814 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); |
| 1815 | set_bit(KEY_DISPLAY_OFF, input->keybit); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1816 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1817 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1818 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
| 1819 | video->flags.multihead ? "yes" : "no", |
| 1820 | video->flags.rom ? "yes" : "no", |
| 1821 | video->flags.post ? "yes" : "no"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1823 | video->pm_nb.notifier_call = acpi_video_resume; |
| 1824 | video->pm_nb.priority = 0; |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 1825 | error = register_pm_notifier(&video->pm_nb); |
| 1826 | if (error) |
Dan Carpenter | 301f33f | 2012-04-04 14:19:16 +0300 | [diff] [blame] | 1827 | goto err_stop_video; |
| 1828 | |
| 1829 | error = input_register_device(input); |
| 1830 | if (error) |
| 1831 | goto err_unregister_pm_notifier; |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1832 | |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1833 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1834 | |
Dan Carpenter | 301f33f | 2012-04-04 14:19:16 +0300 | [diff] [blame] | 1835 | err_unregister_pm_notifier: |
| 1836 | unregister_pm_notifier(&video->pm_nb); |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1837 | err_stop_video: |
| 1838 | acpi_video_bus_stop_devices(video); |
Igor Murzov | b60e7f6 | 2012-03-30 21:32:09 +0400 | [diff] [blame] | 1839 | err_free_input_dev: |
| 1840 | input_free_device(input); |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 1841 | err_put_video: |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1842 | acpi_video_bus_put_devices(video); |
| 1843 | kfree(video->attached_array); |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1844 | err_free_video: |
| 1845 | kfree(video); |
Pavel Machek | db89b4f | 2008-09-22 14:37:34 -0700 | [diff] [blame] | 1846 | device->driver_data = NULL; |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1847 | |
| 1848 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1849 | } |
| 1850 | |
Rafael J. Wysocki | 51fac83 | 2013-01-24 00:24:48 +0100 | [diff] [blame] | 1851 | static int acpi_video_bus_remove(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1852 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1853 | struct acpi_video_bus *video = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1854 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | |
| 1856 | if (!device || !acpi_driver_data(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1857 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 1859 | video = acpi_driver_data(device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1861 | unregister_pm_notifier(&video->pm_nb); |
| 1862 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | acpi_video_bus_stop_devices(video); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1864 | acpi_video_bus_put_devices(video); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1866 | input_unregister_device(video->input); |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 1867 | kfree(video->attached_array); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1868 | kfree(video); |
| 1869 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1870 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1871 | } |
| 1872 | |
Alan Cox | c6996bd | 2012-04-25 14:33:48 +0100 | [diff] [blame] | 1873 | static int __init is_i740(struct pci_dev *dev) |
| 1874 | { |
| 1875 | if (dev->device == 0x00D1) |
| 1876 | return 1; |
| 1877 | if (dev->device == 0x7000) |
| 1878 | return 1; |
| 1879 | return 0; |
| 1880 | } |
| 1881 | |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1882 | static int __init intel_opregion_present(void) |
| 1883 | { |
Alan Cox | c6996bd | 2012-04-25 14:33:48 +0100 | [diff] [blame] | 1884 | int opregion = 0; |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1885 | struct pci_dev *dev = NULL; |
| 1886 | u32 address; |
| 1887 | |
| 1888 | for_each_pci_dev(dev) { |
| 1889 | if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) |
| 1890 | continue; |
| 1891 | if (dev->vendor != PCI_VENDOR_ID_INTEL) |
| 1892 | continue; |
Alan Cox | c6996bd | 2012-04-25 14:33:48 +0100 | [diff] [blame] | 1893 | /* We don't want to poke around undefined i740 registers */ |
| 1894 | if (is_i740(dev)) |
| 1895 | continue; |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1896 | pci_read_config_dword(dev, 0xfc, &address); |
| 1897 | if (!address) |
| 1898 | continue; |
Alan Cox | c6996bd | 2012-04-25 14:33:48 +0100 | [diff] [blame] | 1899 | opregion = 1; |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1900 | } |
Alan Cox | c6996bd | 2012-04-25 14:33:48 +0100 | [diff] [blame] | 1901 | return opregion; |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1902 | } |
| 1903 | |
Rafael J. Wysocki | 8e5c2b7 | 2013-07-25 21:43:39 +0200 | [diff] [blame] | 1904 | int acpi_video_register(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1905 | { |
Rafael J. Wysocki | 8e5c2b7 | 2013-07-25 21:43:39 +0200 | [diff] [blame] | 1906 | int result = 0; |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1907 | if (register_count) { |
| 1908 | /* |
Rafael J. Wysocki | 8e5c2b7 | 2013-07-25 21:43:39 +0200 | [diff] [blame] | 1909 | * if the function of acpi_video_register is already called, |
| 1910 | * don't register the acpi_vide_bus again and return no error. |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1911 | */ |
| 1912 | return 0; |
| 1913 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1914 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | result = acpi_bus_register_driver(&acpi_video_bus); |
Zhang Rui | 39fe394 | 2010-10-08 13:55:11 +0800 | [diff] [blame] | 1916 | if (result < 0) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1917 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1918 | |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1919 | /* |
| 1920 | * When the acpi_video_bus is loaded successfully, increase |
| 1921 | * the counter reference. |
| 1922 | */ |
| 1923 | register_count = 1; |
| 1924 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1925 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1926 | } |
Rafael J. Wysocki | 8e5c2b7 | 2013-07-25 21:43:39 +0200 | [diff] [blame] | 1927 | EXPORT_SYMBOL(acpi_video_register); |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1928 | |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1929 | void acpi_video_unregister(void) |
| 1930 | { |
| 1931 | if (!register_count) { |
| 1932 | /* |
| 1933 | * If the acpi video bus is already unloaded, don't |
| 1934 | * unload it again and return directly. |
| 1935 | */ |
| 1936 | return; |
| 1937 | } |
| 1938 | acpi_bus_unregister_driver(&acpi_video_bus); |
| 1939 | |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1940 | register_count = 0; |
| 1941 | |
| 1942 | return; |
| 1943 | } |
| 1944 | EXPORT_SYMBOL(acpi_video_unregister); |
| 1945 | |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1946 | /* |
| 1947 | * This is kind of nasty. Hardware using Intel chipsets may require |
| 1948 | * the video opregion code to be run first in order to initialise |
| 1949 | * state before any ACPI video calls are made. To handle this we defer |
| 1950 | * registration of the video class until the opregion code has run. |
| 1951 | */ |
| 1952 | |
| 1953 | static int __init acpi_video_init(void) |
| 1954 | { |
Zhang Rui | 45cb50e | 2009-04-24 12:13:18 -0400 | [diff] [blame] | 1955 | dmi_check_system(video_dmi_table); |
| 1956 | |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1957 | if (intel_opregion_present()) |
| 1958 | return 0; |
| 1959 | |
| 1960 | return acpi_video_register(); |
| 1961 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1962 | |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1963 | static void __exit acpi_video_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | { |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1965 | acpi_video_unregister(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1966 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1967 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1969 | |
| 1970 | module_init(acpi_video_init); |
| 1971 | module_exit(acpi_video_exit); |