Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 2 | * video.c - ACPI Video Driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | /* |
Aaron Lu | fbc9fe1 | 2013-10-11 21:27:45 +0800 | [diff] [blame] | 85 | * For Windows 8 systems: if set ture and the GPU driver has |
| 86 | * registered a backlight interface, skip registering ACPI video's. |
| 87 | */ |
| 88 | static bool use_native_backlight = false; |
| 89 | module_param(use_native_backlight, bool, 0644); |
| 90 | |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 91 | static int register_count; |
Aaron Lu | 67b662e | 2013-10-11 21:27:44 +0800 | [diff] [blame] | 92 | static struct mutex video_list_lock; |
| 93 | static struct list_head video_bus_head; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 94 | static int acpi_video_bus_add(struct acpi_device *device); |
Rafael J. Wysocki | 51fac83 | 2013-01-24 00:24:48 +0100 | [diff] [blame] | 95 | static int acpi_video_bus_remove(struct acpi_device *device); |
Bjorn Helgaas | 7015558 | 2009-04-07 15:37:11 +0000 | [diff] [blame] | 96 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
Thomas Renninger | 1ba90e3 | 2007-07-23 14:44:41 +0200 | [diff] [blame] | 98 | static const struct acpi_device_id video_device_ids[] = { |
| 99 | {ACPI_VIDEO_HID, 0}, |
| 100 | {"", 0}, |
| 101 | }; |
| 102 | MODULE_DEVICE_TABLE(acpi, video_device_ids); |
| 103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | static struct acpi_driver acpi_video_bus = { |
Len Brown | c2b6705 | 2007-02-12 23:33:40 -0500 | [diff] [blame] | 105 | .name = "video", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | .class = ACPI_VIDEO_CLASS, |
Thomas Renninger | 1ba90e3 | 2007-07-23 14:44:41 +0200 | [diff] [blame] | 107 | .ids = video_device_ids, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | .ops = { |
| 109 | .add = acpi_video_bus_add, |
| 110 | .remove = acpi_video_bus_remove, |
Bjorn Helgaas | 7015558 | 2009-04-07 15:37:11 +0000 | [diff] [blame] | 111 | .notify = acpi_video_bus_notify, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 112 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | }; |
| 114 | |
| 115 | struct acpi_video_bus_flags { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 116 | u8 multihead:1; /* can switch video heads */ |
| 117 | u8 rom:1; /* can retrieve a video rom */ |
| 118 | u8 post:1; /* can configure the head to */ |
| 119 | u8 reserved:5; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | }; |
| 121 | |
| 122 | struct acpi_video_bus_cap { |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 123 | u8 _DOS:1; /* Enable/Disable output switching */ |
| 124 | u8 _DOD:1; /* Enumerate all devices attached to display adapter */ |
| 125 | u8 _ROM:1; /* Get ROM Data */ |
| 126 | u8 _GPD:1; /* Get POST Device */ |
| 127 | u8 _SPD:1; /* Set POST Device */ |
| 128 | u8 _VPO:1; /* Video POST Options */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 129 | u8 reserved:2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | }; |
| 131 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 132 | struct acpi_video_device_attrib { |
| 133 | u32 display_index:4; /* A zero-based instance of the Display */ |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 134 | u32 display_port_attachment:4; /* This field differentiates the display type */ |
| 135 | u32 display_type:4; /* Describe the specific type in use */ |
| 136 | u32 vendor_specific:4; /* Chipset Vendor Specific */ |
| 137 | u32 bios_can_detect:1; /* BIOS can detect the device */ |
| 138 | u32 depend_on_vga:1; /* Non-VGA output device whose power is related to |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 139 | the VGA device. */ |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 140 | u32 pipe_id:3; /* For VGA multiple-head devices. */ |
| 141 | u32 reserved:10; /* Must be 0 */ |
| 142 | u32 device_id_scheme:1; /* Device ID Scheme */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | }; |
| 144 | |
| 145 | struct acpi_video_enumerated_device { |
| 146 | union { |
| 147 | u32 int_val; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 148 | struct acpi_video_device_attrib attrib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | } value; |
| 150 | struct acpi_video_device *bind_info; |
| 151 | }; |
| 152 | |
| 153 | struct acpi_video_bus { |
Patrick Mochel | e6afa0d | 2006-05-19 16:54:40 -0400 | [diff] [blame] | 154 | struct acpi_device *device; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 155 | u8 dos_setting; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | struct acpi_video_enumerated_device *attached_array; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 157 | u8 attached_count; |
| 158 | struct acpi_video_bus_cap cap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | struct acpi_video_bus_flags flags; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 160 | struct list_head video_device_list; |
Dmitry Torokhov | bbac81f | 2007-11-05 11:43:32 -0500 | [diff] [blame] | 161 | struct mutex device_list_lock; /* protects video_device_list */ |
Aaron Lu | 67b662e | 2013-10-11 21:27:44 +0800 | [diff] [blame] | 162 | struct list_head entry; |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 163 | struct input_dev *input; |
| 164 | char phys[32]; /* for input device */ |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 165 | struct notifier_block pm_nb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | }; |
| 167 | |
| 168 | struct acpi_video_device_flags { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 169 | u8 crt:1; |
| 170 | u8 lcd:1; |
| 171 | u8 tvout:1; |
Rui Zhang | 82cae99 | 2007-01-03 23:40:53 -0500 | [diff] [blame] | 172 | u8 dvi:1; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 173 | u8 bios:1; |
| 174 | u8 unknown:1; |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 175 | u8 notify:1; |
| 176 | u8 reserved:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | }; |
| 178 | |
| 179 | struct acpi_video_device_cap { |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 180 | u8 _ADR:1; /* Return the unique ID */ |
| 181 | u8 _BCL:1; /* Query list of brightness control levels supported */ |
| 182 | u8 _BCM:1; /* Set the brightness level */ |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 183 | u8 _BQC:1; /* Get current brightness level */ |
Zhang Rui | c60d638 | 2009-03-18 16:27:18 +0800 | [diff] [blame] | 184 | u8 _BCQ:1; /* Some buggy BIOS uses _BCQ instead of _BQC */ |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 185 | u8 _DDC:1; /* Return the EDID for this device */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | }; |
| 187 | |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 188 | struct acpi_video_brightness_flags { |
| 189 | u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */ |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 190 | u8 _BCL_reversed:1; /* _BCL package is in a reversed order */ |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 191 | u8 _BQC_use_index:1; /* _BQC returns an index value */ |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 192 | }; |
| 193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | struct acpi_video_device_brightness { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 195 | int curr; |
| 196 | int count; |
| 197 | int *levels; |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 198 | struct acpi_video_brightness_flags flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | }; |
| 200 | |
| 201 | struct acpi_video_device { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 202 | unsigned long device_id; |
| 203 | struct acpi_video_device_flags flags; |
| 204 | struct acpi_video_device_cap cap; |
| 205 | struct list_head entry; |
| 206 | struct acpi_video_bus *video; |
| 207 | struct acpi_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | struct acpi_video_device_brightness *brightness; |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 209 | struct backlight_device *backlight; |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 210 | struct thermal_cooling_device *cooling_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | }; |
| 212 | |
Jan Engelhardt | b7171ae | 2009-01-12 00:08:19 +0100 | [diff] [blame] | 213 | static const char device_decode[][30] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | "motherboard VGA device", |
| 215 | "PCI VGA device", |
| 216 | "AGP VGA device", |
| 217 | "UNKNOWN", |
| 218 | }; |
| 219 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 220 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
| 221 | static void acpi_video_device_rebind(struct acpi_video_bus *video); |
| 222 | static void acpi_video_device_bind(struct acpi_video_bus *video, |
| 223 | struct acpi_video_device *device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 225 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
| 226 | int level); |
| 227 | static int acpi_video_device_lcd_get_level_current( |
| 228 | struct acpi_video_device *device, |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 229 | unsigned long long *level, bool raw); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 230 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
| 231 | u32 level_current, u32 event); |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 232 | static int acpi_video_switch_brightness(struct acpi_video_device *device, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 233 | int event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | |
Aaron Lu | fbc9fe1 | 2013-10-11 21:27:45 +0800 | [diff] [blame] | 235 | static bool acpi_video_verify_backlight_support(void) |
| 236 | { |
| 237 | if (acpi_osi_is_win8() && use_native_backlight && |
| 238 | backlight_device_registered(BACKLIGHT_RAW)) |
| 239 | return false; |
| 240 | return acpi_video_backlight_support(); |
| 241 | } |
| 242 | |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 243 | /* backlight device sysfs support */ |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 244 | static int acpi_video_get_brightness(struct backlight_device *bd) |
| 245 | { |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 246 | unsigned long long cur_level; |
Matthew Garrett | 38531e6 | 2007-12-26 02:03:26 +0000 | [diff] [blame] | 247 | int i; |
Felipe Contreras | 7c364e7 | 2013-08-03 22:15:21 +0200 | [diff] [blame] | 248 | struct acpi_video_device *vd = bl_get_data(bd); |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 249 | |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 250 | if (acpi_video_device_lcd_get_level_current(vd, &cur_level, false)) |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 251 | return -EINVAL; |
Matthew Garrett | 38531e6 | 2007-12-26 02:03:26 +0000 | [diff] [blame] | 252 | for (i = 2; i < vd->brightness->count; i++) { |
| 253 | if (vd->brightness->levels[i] == cur_level) |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 254 | /* |
| 255 | * The first two entries are special - see page 575 |
| 256 | * of the ACPI spec 3.0 |
| 257 | */ |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 258 | return i - 2; |
Matthew Garrett | 38531e6 | 2007-12-26 02:03:26 +0000 | [diff] [blame] | 259 | } |
| 260 | return 0; |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | static int acpi_video_set_brightness(struct backlight_device *bd) |
| 264 | { |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 265 | int request_level = bd->props.brightness + 2; |
Felipe Contreras | 7c364e7 | 2013-08-03 22:15:21 +0200 | [diff] [blame] | 266 | struct acpi_video_device *vd = bl_get_data(bd); |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 267 | |
| 268 | return acpi_video_device_lcd_set_level(vd, |
| 269 | vd->brightness->levels[request_level]); |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 270 | } |
| 271 | |
Lionel Debroux | acc2472 | 2010-11-16 14:14:02 +0100 | [diff] [blame] | 272 | static const struct backlight_ops acpi_backlight_ops = { |
Richard Purdie | 599a52d | 2007-02-10 23:07:48 +0000 | [diff] [blame] | 273 | .get_brightness = acpi_video_get_brightness, |
| 274 | .update_status = acpi_video_set_brightness, |
| 275 | }; |
| 276 | |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 277 | /* thermal cooling device callbacks */ |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 278 | 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] | 279 | long *state) |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 280 | { |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 281 | struct acpi_device *device = cooling_dev->devdata; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 282 | struct acpi_video_device *video = acpi_driver_data(device); |
| 283 | |
Matthew Garrett | 6503e5d | 2008-11-27 17:48:13 +0000 | [diff] [blame] | 284 | *state = video->brightness->count - 3; |
| 285 | return 0; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 286 | } |
| 287 | |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 288 | 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] | 289 | long *state) |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 290 | { |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 291 | struct acpi_device *device = cooling_dev->devdata; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 292 | struct acpi_video_device *video = acpi_driver_data(device); |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 293 | unsigned long long level; |
Matthew Garrett | 6503e5d | 2008-11-27 17:48:13 +0000 | [diff] [blame] | 294 | int offset; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 295 | |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 296 | if (acpi_video_device_lcd_get_level_current(video, &level, false)) |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 297 | return -EINVAL; |
Matthew Garrett | 6503e5d | 2008-11-27 17:48:13 +0000 | [diff] [blame] | 298 | for (offset = 2; offset < video->brightness->count; offset++) |
| 299 | if (level == video->brightness->levels[offset]) { |
| 300 | *state = video->brightness->count - offset - 1; |
| 301 | return 0; |
| 302 | } |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 303 | |
| 304 | return -EINVAL; |
| 305 | } |
| 306 | |
| 307 | static int |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 308 | 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] | 309 | { |
Dmitry Torokhov | 4a703a8 | 2009-08-29 23:03:16 -0400 | [diff] [blame] | 310 | struct acpi_device *device = cooling_dev->devdata; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 311 | struct acpi_video_device *video = acpi_driver_data(device); |
| 312 | int level; |
| 313 | |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 314 | if (state >= video->brightness->count - 2) |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 315 | return -EINVAL; |
| 316 | |
| 317 | state = video->brightness->count - state; |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 318 | level = video->brightness->levels[state - 1]; |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 319 | return acpi_video_device_lcd_set_level(video, level); |
| 320 | } |
| 321 | |
Vasiliy Kulikov | 9c8b04b | 2011-06-25 21:07:52 +0400 | [diff] [blame] | 322 | static const struct thermal_cooling_device_ops video_cooling_ops = { |
Zhang Rui | 702ed51 | 2008-01-17 15:51:22 +0800 | [diff] [blame] | 323 | .get_max_state = video_get_max_state, |
| 324 | .get_cur_state = video_get_cur_state, |
| 325 | .set_cur_state = video_set_cur_state, |
| 326 | }; |
| 327 | |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 328 | /* |
| 329 | * -------------------------------------------------------------------------- |
| 330 | * Video Management |
| 331 | * -------------------------------------------------------------------------- |
| 332 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 335 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
| 336 | union acpi_object **levels) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 338 | int status; |
| 339 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 340 | union acpi_object *obj; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | |
| 343 | *levels = NULL; |
| 344 | |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 345 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | if (!ACPI_SUCCESS(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 347 | return status; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 348 | obj = (union acpi_object *)buffer.pointer; |
Adrian Bunk | 6665bda | 2006-03-11 10:12:00 -0500 | [diff] [blame] | 349 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
Len Brown | 6468463 | 2006-06-26 23:41:38 -0400 | [diff] [blame] | 350 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | status = -EFAULT; |
| 352 | goto err; |
| 353 | } |
| 354 | |
| 355 | *levels = obj; |
| 356 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 357 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 359 | err: |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 360 | kfree(buffer.pointer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 362 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 366 | 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] | 367 | { |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 368 | int status; |
Zhang Rui | 9e6dada | 2008-12-31 10:58:48 +0800 | [diff] [blame] | 369 | int state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | |
Jiang Liu | 0db9820 | 2013-06-29 00:24:39 +0800 | [diff] [blame] | 371 | status = acpi_execute_simple_method(device->dev->handle, |
| 372 | "_BCM", level); |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 373 | if (ACPI_FAILURE(status)) { |
| 374 | ACPI_ERROR((AE_INFO, "Evaluating _BCM failed")); |
| 375 | return -EIO; |
| 376 | } |
| 377 | |
Alexey Starikovskiy | 4500ca8 | 2007-09-03 16:29:58 +0400 | [diff] [blame] | 378 | device->brightness->curr = level; |
Zhang Rui | 9e6dada | 2008-12-31 10:58:48 +0800 | [diff] [blame] | 379 | for (state = 2; state < device->brightness->count; state++) |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 380 | if (level == device->brightness->levels[state]) { |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 381 | if (device->backlight) |
| 382 | device->backlight->props.brightness = state - 2; |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 383 | return 0; |
| 384 | } |
Zhang Rui | 9e6dada | 2008-12-31 10:58:48 +0800 | [diff] [blame] | 385 | |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 386 | ACPI_ERROR((AE_INFO, "Current brightness invalid")); |
| 387 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | } |
| 389 | |
Zhang Rui | 45cb50e | 2009-04-24 12:13:18 -0400 | [diff] [blame] | 390 | /* |
| 391 | * For some buggy _BQC methods, we need to add a constant value to |
| 392 | * the _BQC return value to get the actual current brightness level |
| 393 | */ |
| 394 | |
| 395 | static int bqc_offset_aml_bug_workaround; |
| 396 | static int __init video_set_bqc_offset(const struct dmi_system_id *d) |
| 397 | { |
| 398 | bqc_offset_aml_bug_workaround = 9; |
| 399 | return 0; |
| 400 | } |
| 401 | |
| 402 | static struct dmi_system_id video_dmi_table[] __initdata = { |
| 403 | /* |
| 404 | * Broken _BQC workaround http://bugzilla.kernel.org/show_bug.cgi?id=13121 |
| 405 | */ |
| 406 | { |
| 407 | .callback = video_set_bqc_offset, |
| 408 | .ident = "Acer Aspire 5720", |
| 409 | .matches = { |
| 410 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), |
| 411 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"), |
| 412 | }, |
| 413 | }, |
Len Brown | 5afc4ab | 2009-05-07 21:11:56 -0400 | [diff] [blame] | 414 | { |
| 415 | .callback = video_set_bqc_offset, |
| 416 | .ident = "Acer Aspire 5710Z", |
| 417 | .matches = { |
| 418 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), |
| 419 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5710Z"), |
| 420 | }, |
| 421 | }, |
Zhang Rui | 34ac272 | 2009-05-26 23:35:34 -0400 | [diff] [blame] | 422 | { |
| 423 | .callback = video_set_bqc_offset, |
| 424 | .ident = "eMachines E510", |
| 425 | .matches = { |
| 426 | DMI_MATCH(DMI_BOARD_VENDOR, "EMACHINES"), |
| 427 | DMI_MATCH(DMI_PRODUCT_NAME, "eMachines E510"), |
| 428 | }, |
| 429 | }, |
Zhang Rui | 93bcece | 2009-05-19 15:08:41 -0400 | [diff] [blame] | 430 | { |
| 431 | .callback = video_set_bqc_offset, |
| 432 | .ident = "Acer Aspire 5315", |
| 433 | .matches = { |
| 434 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), |
| 435 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"), |
| 436 | }, |
| 437 | }, |
Zhang Rui | 152a4e6 | 2009-06-22 11:31:18 +0800 | [diff] [blame] | 438 | { |
| 439 | .callback = video_set_bqc_offset, |
| 440 | .ident = "Acer Aspire 7720", |
| 441 | .matches = { |
| 442 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), |
| 443 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720"), |
| 444 | }, |
| 445 | }, |
Zhang Rui | 45cb50e | 2009-04-24 12:13:18 -0400 | [diff] [blame] | 446 | {} |
| 447 | }; |
| 448 | |
Danny Baumann | 994fa63 | 2013-03-19 16:22:52 +0000 | [diff] [blame] | 449 | static unsigned long long |
| 450 | acpi_video_bqc_value_to_level(struct acpi_video_device *device, |
| 451 | unsigned long long bqc_value) |
| 452 | { |
| 453 | unsigned long long level; |
| 454 | |
| 455 | if (device->brightness->flags._BQC_use_index) { |
| 456 | /* |
| 457 | * _BQC returns an index that doesn't account for |
| 458 | * the first 2 items with special meaning, so we need |
| 459 | * to compensate for that by offsetting ourselves |
| 460 | */ |
| 461 | if (device->brightness->flags._BCL_reversed) |
| 462 | bqc_value = device->brightness->count - 3 - bqc_value; |
| 463 | |
| 464 | level = device->brightness->levels[bqc_value + 2]; |
| 465 | } else { |
| 466 | level = bqc_value; |
| 467 | } |
| 468 | |
| 469 | level += bqc_offset_aml_bug_workaround; |
| 470 | |
| 471 | return level; |
| 472 | } |
| 473 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 475 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 476 | unsigned long long *level, bool raw) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | { |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 478 | acpi_status status = AE_OK; |
Vladimir Serbinenko | 4e231fa | 2009-06-24 15:17:36 +0800 | [diff] [blame] | 479 | int i; |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 480 | |
Zhang Rui | c60d638 | 2009-03-18 16:27:18 +0800 | [diff] [blame] | 481 | if (device->cap._BQC || device->cap._BCQ) { |
| 482 | char *buf = device->cap._BQC ? "_BQC" : "_BCQ"; |
| 483 | |
| 484 | status = acpi_evaluate_integer(device->dev->handle, buf, |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 485 | NULL, level); |
| 486 | if (ACPI_SUCCESS(status)) { |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 487 | if (raw) { |
| 488 | /* |
| 489 | * Caller has indicated he wants the raw |
| 490 | * value returned by _BQC, so don't furtherly |
| 491 | * mess with the value. |
| 492 | */ |
| 493 | return 0; |
| 494 | } |
| 495 | |
Danny Baumann | 994fa63 | 2013-03-19 16:22:52 +0000 | [diff] [blame] | 496 | *level = acpi_video_bqc_value_to_level(device, *level); |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 497 | |
Vladimir Serbinenko | 4e231fa | 2009-06-24 15:17:36 +0800 | [diff] [blame] | 498 | for (i = 2; i < device->brightness->count; i++) |
| 499 | if (device->brightness->levels[i] == *level) { |
| 500 | device->brightness->curr = *level; |
| 501 | return 0; |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 502 | } |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 503 | /* |
| 504 | * BQC returned an invalid level. |
| 505 | * Stop using it. |
| 506 | */ |
| 507 | ACPI_WARNING((AE_INFO, |
| 508 | "%s returned an invalid level", |
| 509 | buf)); |
| 510 | device->cap._BQC = device->cap._BCQ = 0; |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 511 | } else { |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 512 | /* |
| 513 | * Fixme: |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 514 | * should we return an error or ignore this failure? |
| 515 | * dev->brightness->curr is a cached value which stores |
| 516 | * the correct current backlight level in most cases. |
| 517 | * ACPI video backlight still works w/ buggy _BQC. |
| 518 | * http://bugzilla.kernel.org/show_bug.cgi?id=12233 |
| 519 | */ |
Zhang Rui | c60d638 | 2009-03-18 16:27:18 +0800 | [diff] [blame] | 520 | ACPI_WARNING((AE_INFO, "Evaluating %s failed", buf)); |
| 521 | device->cap._BQC = device->cap._BCQ = 0; |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 522 | } |
| 523 | } |
| 524 | |
Alexey Starikovskiy | 4500ca8 | 2007-09-03 16:29:58 +0400 | [diff] [blame] | 525 | *level = device->brightness->curr; |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 526 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 530 | acpi_video_device_EDID(struct acpi_video_device *device, |
| 531 | union acpi_object **edid, ssize_t length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 533 | int status; |
| 534 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 535 | union acpi_object *obj; |
| 536 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
| 537 | struct acpi_object_list args = { 1, &arg0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | |
| 540 | *edid = NULL; |
| 541 | |
| 542 | if (!device) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 543 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | if (length == 128) |
| 545 | arg0.integer.value = 1; |
| 546 | else if (length == 256) |
| 547 | arg0.integer.value = 2; |
| 548 | else |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 549 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 551 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | if (ACPI_FAILURE(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 553 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 555 | obj = buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | |
| 557 | if (obj && obj->type == ACPI_TYPE_BUFFER) |
| 558 | *edid = obj; |
| 559 | else { |
Len Brown | 6468463 | 2006-06-26 23:41:38 -0400 | [diff] [blame] | 560 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | status = -EFAULT; |
| 562 | kfree(obj); |
| 563 | } |
| 564 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 565 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | } |
| 567 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | /* bus */ |
| 569 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | /* |
| 571 | * Arg: |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 572 | * video : video bus device pointer |
| 573 | * bios_flag : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | * 0. The system BIOS should NOT automatically switch(toggle) |
| 575 | * the active display output. |
| 576 | * 1. The system BIOS should automatically switch (toggle) the |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 577 | * active display output. No switch event. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | * 2. The _DGS value should be locked. |
| 579 | * 3. The system BIOS should not automatically switch (toggle) the |
| 580 | * active display output, but instead generate the display switch |
| 581 | * event notify code. |
| 582 | * lcd_flag : |
| 583 | * 0. The system BIOS should automatically control the brightness level |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 584 | * of the LCD when the power changes from AC to DC |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 585 | * 1. The system BIOS should NOT automatically control the brightness |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 586 | * level of the LCD when the power changes from AC to DC. |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 587 | * Return Value: |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 588 | * -EINVAL wrong arg. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | */ |
| 590 | |
| 591 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 592 | 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] | 593 | { |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 594 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | |
Zhang Rui | b037384 | 2012-06-20 09:48:43 +0800 | [diff] [blame] | 596 | if (!video->cap._DOS) |
| 597 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 599 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) |
| 600 | return -EINVAL; |
Jiang Liu | 0db9820 | 2013-06-29 00:24:39 +0800 | [diff] [blame] | 601 | video->dos_setting = (lcd_flag << 2) | bios_flag; |
| 602 | status = acpi_execute_simple_method(video->device->handle, "_DOS", |
| 603 | (lcd_flag << 2) | bios_flag); |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 604 | if (ACPI_FAILURE(status)) |
| 605 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 607 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | } |
| 609 | |
| 610 | /* |
Zhang Rui | 935e5f2 | 2008-12-11 16:24:52 -0500 | [diff] [blame] | 611 | * Simple comparison function used to sort backlight levels. |
| 612 | */ |
| 613 | |
| 614 | static int |
| 615 | acpi_video_cmp_level(const void *a, const void *b) |
| 616 | { |
| 617 | return *(int *)a - *(int *)b; |
| 618 | } |
| 619 | |
| 620 | /* |
Aaron Lu | a50188d | 2013-04-22 14:08:32 +0200 | [diff] [blame] | 621 | * Decides if _BQC/_BCQ for this system is usable |
| 622 | * |
| 623 | * We do this by changing the level first and then read out the current |
| 624 | * brightness level, if the value does not match, find out if it is using |
| 625 | * index. If not, clear the _BQC/_BCQ capability. |
| 626 | */ |
| 627 | static int acpi_video_bqc_quirk(struct acpi_video_device *device, |
| 628 | int max_level, int current_level) |
| 629 | { |
| 630 | struct acpi_video_device_brightness *br = device->brightness; |
| 631 | int result; |
| 632 | unsigned long long level; |
| 633 | int test_level; |
| 634 | |
| 635 | /* don't mess with existing known broken systems */ |
| 636 | if (bqc_offset_aml_bug_workaround) |
| 637 | return 0; |
| 638 | |
| 639 | /* |
| 640 | * Some systems always report current brightness level as maximum |
| 641 | * through _BQC, we need to test another value for them. |
| 642 | */ |
Felipe Contreras | b3b301c | 2013-08-03 23:00:25 +0200 | [diff] [blame] | 643 | test_level = current_level == max_level ? br->levels[3] : max_level; |
Aaron Lu | a50188d | 2013-04-22 14:08:32 +0200 | [diff] [blame] | 644 | |
| 645 | result = acpi_video_device_lcd_set_level(device, test_level); |
| 646 | if (result) |
| 647 | return result; |
| 648 | |
| 649 | result = acpi_video_device_lcd_get_level_current(device, &level, true); |
| 650 | if (result) |
| 651 | return result; |
| 652 | |
| 653 | if (level != test_level) { |
| 654 | /* buggy _BQC found, need to find out if it uses index */ |
| 655 | if (level < br->count) { |
| 656 | if (br->flags._BCL_reversed) |
| 657 | level = br->count - 3 - level; |
| 658 | if (br->levels[level + 2] == test_level) |
| 659 | br->flags._BQC_use_index = 1; |
| 660 | } |
| 661 | |
| 662 | if (!br->flags._BQC_use_index) |
| 663 | device->cap._BQC = device->cap._BCQ = 0; |
| 664 | } |
| 665 | |
| 666 | return 0; |
| 667 | } |
| 668 | |
| 669 | |
| 670 | /* |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 671 | * Arg: |
| 672 | * device : video output device (LCD, CRT, ..) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | * |
| 674 | * Return Value: |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 675 | * Maximum brightness level |
| 676 | * |
| 677 | * Allocate and initialize device->brightness. |
| 678 | */ |
| 679 | |
| 680 | static int |
| 681 | acpi_video_init_brightness(struct acpi_video_device *device) |
| 682 | { |
| 683 | union acpi_object *obj = NULL; |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 684 | int i, max_level = 0, count = 0, level_ac_battery = 0; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 685 | unsigned long long level, level_old; |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 686 | union acpi_object *o; |
| 687 | struct acpi_video_device_brightness *br = NULL; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 688 | int result = -EINVAL; |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 689 | |
| 690 | if (!ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { |
| 691 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available " |
| 692 | "LCD brightness level\n")); |
| 693 | goto out; |
| 694 | } |
| 695 | |
| 696 | if (obj->package.count < 2) |
| 697 | goto out; |
| 698 | |
| 699 | br = kzalloc(sizeof(*br), GFP_KERNEL); |
| 700 | if (!br) { |
| 701 | printk(KERN_ERR "can't allocate memory\n"); |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 702 | result = -ENOMEM; |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 703 | goto out; |
| 704 | } |
| 705 | |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 706 | br->levels = kmalloc((obj->package.count + 2) * sizeof *(br->levels), |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 707 | GFP_KERNEL); |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 708 | if (!br->levels) { |
| 709 | result = -ENOMEM; |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 710 | goto out_free; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 711 | } |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 712 | |
| 713 | for (i = 0; i < obj->package.count; i++) { |
| 714 | o = (union acpi_object *)&obj->package.elements[i]; |
| 715 | if (o->type != ACPI_TYPE_INTEGER) { |
| 716 | printk(KERN_ERR PREFIX "Invalid data\n"); |
| 717 | continue; |
| 718 | } |
| 719 | br->levels[count] = (u32) o->integer.value; |
| 720 | |
| 721 | if (br->levels[count] > max_level) |
| 722 | max_level = br->levels[count]; |
| 723 | count++; |
| 724 | } |
| 725 | |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 726 | /* |
| 727 | * some buggy BIOS don't export the levels |
| 728 | * when machine is on AC/Battery in _BCL package. |
| 729 | * In this case, the first two elements in _BCL packages |
| 730 | * are also supported brightness levels that OS should take care of. |
| 731 | */ |
Zhang Rui | 90af2cf | 2009-04-14 11:02:18 +0800 | [diff] [blame] | 732 | for (i = 2; i < count; i++) { |
| 733 | if (br->levels[i] == br->levels[0]) |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 734 | level_ac_battery++; |
Zhang Rui | 90af2cf | 2009-04-14 11:02:18 +0800 | [diff] [blame] | 735 | if (br->levels[i] == br->levels[1]) |
| 736 | level_ac_battery++; |
| 737 | } |
Zhang Rui | 935e5f2 | 2008-12-11 16:24:52 -0500 | [diff] [blame] | 738 | |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 739 | if (level_ac_battery < 2) { |
| 740 | level_ac_battery = 2 - level_ac_battery; |
| 741 | br->flags._BCL_no_ac_battery_levels = 1; |
| 742 | for (i = (count - 1 + level_ac_battery); i >= 2; i--) |
| 743 | br->levels[i] = br->levels[i - level_ac_battery]; |
| 744 | count += level_ac_battery; |
| 745 | } else if (level_ac_battery > 2) |
Colin Ian King | bf6787e | 2012-11-29 11:53:13 +0000 | [diff] [blame] | 746 | ACPI_ERROR((AE_INFO, "Too many duplicates in _BCL package")); |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 747 | |
Zhang Rui | d80fb99 | 2009-03-18 16:27:14 +0800 | [diff] [blame] | 748 | /* Check if the _BCL package is in a reversed order */ |
| 749 | if (max_level == br->levels[2]) { |
| 750 | br->flags._BCL_reversed = 1; |
| 751 | sort(&br->levels[2], count - 2, sizeof(br->levels[2]), |
| 752 | acpi_video_cmp_level, NULL); |
| 753 | } else if (max_level != br->levels[count - 1]) |
| 754 | ACPI_ERROR((AE_INFO, |
Colin Ian King | bf6787e | 2012-11-29 11:53:13 +0000 | [diff] [blame] | 755 | "Found unordered _BCL package")); |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 756 | |
| 757 | br->count = count; |
| 758 | device->brightness = br; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 759 | |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 760 | /* _BQC uses INDEX while _BCL uses VALUE in some laptops */ |
Zhang Rui | 90c53ca | 2009-08-31 12:39:54 -0400 | [diff] [blame] | 761 | br->curr = level = max_level; |
Zhang Rui | e047cca | 2009-04-09 14:24:35 +0800 | [diff] [blame] | 762 | |
| 763 | if (!device->cap._BQC) |
| 764 | goto set_level; |
| 765 | |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 766 | result = acpi_video_device_lcd_get_level_current(device, |
| 767 | &level_old, true); |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 768 | if (result) |
| 769 | goto out_free_levels; |
| 770 | |
Aaron Lu | a50188d | 2013-04-22 14:08:32 +0200 | [diff] [blame] | 771 | result = acpi_video_bqc_quirk(device, max_level, level_old); |
| 772 | if (result) |
| 773 | goto out_free_levels; |
Zhang Rui | e047cca | 2009-04-09 14:24:35 +0800 | [diff] [blame] | 774 | /* |
Aaron Lu | a50188d | 2013-04-22 14:08:32 +0200 | [diff] [blame] | 775 | * cap._BQC may get cleared due to _BQC is found to be broken |
| 776 | * in acpi_video_bqc_quirk, so check again here. |
Zhang Rui | e047cca | 2009-04-09 14:24:35 +0800 | [diff] [blame] | 777 | */ |
Aaron Lu | a50188d | 2013-04-22 14:08:32 +0200 | [diff] [blame] | 778 | if (!device->cap._BQC) |
| 779 | goto set_level; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 780 | |
Aaron Lu | 545ef36 | 2013-11-15 14:39:12 +0800 | [diff] [blame] | 781 | level = acpi_video_bqc_value_to_level(device, level_old); |
| 782 | /* |
| 783 | * On some buggy laptops, _BQC returns an uninitialized |
| 784 | * value when invoked for the first time, i.e. |
| 785 | * level_old is invalid (no matter whether it's a level |
| 786 | * or an index). Set the backlight to max_level in this case. |
| 787 | */ |
| 788 | for (i = 2; i < br->count; i++) |
| 789 | if (level == br->levels[i]) |
| 790 | break; |
| 791 | if (i == br->count || !level) |
| 792 | level = max_level; |
Zhang Rui | e047cca | 2009-04-09 14:24:35 +0800 | [diff] [blame] | 793 | |
Zhang Rui | e047cca | 2009-04-09 14:24:35 +0800 | [diff] [blame] | 794 | set_level: |
Zhang Rui | 90c53ca | 2009-08-31 12:39:54 -0400 | [diff] [blame] | 795 | result = acpi_video_device_lcd_set_level(device, level); |
Zhang Rui | e047cca | 2009-04-09 14:24:35 +0800 | [diff] [blame] | 796 | if (result) |
| 797 | goto out_free_levels; |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 798 | |
Zhang Rui | d32f694 | 2009-03-18 16:27:12 +0800 | [diff] [blame] | 799 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
| 800 | "found %d brightness levels\n", count - 2)); |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 801 | kfree(obj); |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 802 | return result; |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 803 | |
| 804 | out_free_levels: |
| 805 | kfree(br->levels); |
| 806 | out_free: |
| 807 | kfree(br); |
| 808 | out: |
| 809 | device->brightness = NULL; |
| 810 | kfree(obj); |
Zhang Rui | 1a7c618 | 2009-03-18 16:27:16 +0800 | [diff] [blame] | 811 | return result; |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 812 | } |
| 813 | |
| 814 | /* |
| 815 | * Arg: |
| 816 | * device : video output device (LCD, CRT, ..) |
| 817 | * |
| 818 | * Return Value: |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 819 | * None |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | * |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 821 | * Find out all required AML methods defined under the output |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | * device. |
| 823 | */ |
| 824 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 825 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | { |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 827 | if (acpi_has_method(device->dev->handle, "_ADR")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | device->cap._ADR = 1; |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 829 | if (acpi_has_method(device->dev->handle, "_BCL")) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 830 | device->cap._BCL = 1; |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 831 | if (acpi_has_method(device->dev->handle, "_BCM")) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 832 | device->cap._BCM = 1; |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 833 | if (acpi_has_method(device->dev->handle, "_BQC")) { |
Yu Luming | 2f3d000 | 2006-11-11 02:40:34 +0800 | [diff] [blame] | 834 | device->cap._BQC = 1; |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 835 | } else if (acpi_has_method(device->dev->handle, "_BCQ")) { |
Zhang Rui | c60d638 | 2009-03-18 16:27:18 +0800 | [diff] [blame] | 836 | printk(KERN_WARNING FW_BUG "_BCQ is used instead of _BQC\n"); |
| 837 | device->cap._BCQ = 1; |
| 838 | } |
| 839 | |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 840 | if (acpi_has_method(device->dev->handle, "_DDC")) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 841 | device->cap._DDC = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | } |
| 843 | |
| 844 | /* |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 845 | * Arg: |
| 846 | * device : video output device (VGA) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | * |
| 848 | * Return Value: |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 849 | * None |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | * |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 851 | * Find out all required AML methods defined under the video bus device. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | */ |
| 853 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 854 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | { |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 856 | if (acpi_has_method(video->device->handle, "_DOS")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | video->cap._DOS = 1; |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 858 | if (acpi_has_method(video->device->handle, "_DOD")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | video->cap._DOD = 1; |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 860 | if (acpi_has_method(video->device->handle, "_ROM")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | video->cap._ROM = 1; |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 862 | if (acpi_has_method(video->device->handle, "_GPD")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | video->cap._GPD = 1; |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 864 | if (acpi_has_method(video->device->handle, "_SPD")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | video->cap._SPD = 1; |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 866 | if (acpi_has_method(video->device->handle, "_VPO")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | video->cap._VPO = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | } |
| 869 | |
| 870 | /* |
| 871 | * Check whether the video bus device has required AML method to |
| 872 | * support the desired features |
| 873 | */ |
| 874 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 875 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 877 | acpi_status status = -ENOENT; |
Alexander Chiang | 1e4cffe | 2009-06-10 19:56:00 +0000 | [diff] [blame] | 878 | struct pci_dev *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | |
| 880 | if (!video) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 881 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | |
Alexander Chiang | 1e4cffe | 2009-06-10 19:56:00 +0000 | [diff] [blame] | 883 | dev = acpi_get_pci_dev(video->device->handle); |
Thomas Renninger | 22c13f9 | 2008-08-01 17:37:54 +0200 | [diff] [blame] | 884 | if (!dev) |
| 885 | return -ENODEV; |
Alexander Chiang | 1e4cffe | 2009-06-10 19:56:00 +0000 | [diff] [blame] | 886 | pci_dev_put(dev); |
Thomas Renninger | 22c13f9 | 2008-08-01 17:37:54 +0200 | [diff] [blame] | 887 | |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 888 | /* |
| 889 | * Since there is no HID, CID and so on for VGA driver, we have |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | * to check well known required nodes. |
| 891 | */ |
| 892 | |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 893 | /* Does this device support video switching? */ |
Stefan Bader | 3a1151e | 2009-08-21 11:03:05 +0200 | [diff] [blame] | 894 | if (video->cap._DOS || video->cap._DOD) { |
| 895 | if (!video->cap._DOS) { |
| 896 | printk(KERN_WARNING FW_BUG |
| 897 | "ACPI(%s) defines _DOD but not _DOS\n", |
| 898 | acpi_device_bid(video->device)); |
| 899 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | video->flags.multihead = 1; |
| 901 | status = 0; |
| 902 | } |
| 903 | |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 904 | /* Does this device support retrieving a video ROM? */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 905 | if (video->cap._ROM) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | video->flags.rom = 1; |
| 907 | status = 0; |
| 908 | } |
| 909 | |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 910 | /* Does this device support configuring which video device to POST? */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 911 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | video->flags.post = 1; |
| 913 | status = 0; |
| 914 | } |
| 915 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 916 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | } |
| 918 | |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 919 | /* |
| 920 | * -------------------------------------------------------------------------- |
| 921 | * Driver Interface |
| 922 | * -------------------------------------------------------------------------- |
| 923 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | |
| 925 | /* device interface */ |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 926 | static struct acpi_video_device_attrib * |
Rui Zhang | 82cae99 | 2007-01-03 23:40:53 -0500 | [diff] [blame] | 927 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) |
| 928 | { |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 929 | struct acpi_video_enumerated_device *ids; |
| 930 | int i; |
Rui Zhang | 82cae99 | 2007-01-03 23:40:53 -0500 | [diff] [blame] | 931 | |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 932 | for (i = 0; i < video->attached_count; i++) { |
| 933 | ids = &video->attached_array[i]; |
| 934 | if ((ids->value.int_val & 0xffff) == device_id) |
| 935 | return &ids->value.attrib; |
| 936 | } |
| 937 | |
Rui Zhang | 82cae99 | 2007-01-03 23:40:53 -0500 | [diff] [blame] | 938 | return NULL; |
| 939 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | |
| 941 | static int |
Matthew Garrett | e92a716 | 2010-01-12 14:17:03 -0500 | [diff] [blame] | 942 | acpi_video_get_device_type(struct acpi_video_bus *video, |
| 943 | unsigned long device_id) |
| 944 | { |
| 945 | struct acpi_video_enumerated_device *ids; |
| 946 | int i; |
| 947 | |
| 948 | for (i = 0; i < video->attached_count; i++) { |
| 949 | ids = &video->attached_array[i]; |
| 950 | if ((ids->value.int_val & 0xffff) == device_id) |
| 951 | return ids->value.int_val; |
| 952 | } |
| 953 | |
| 954 | return 0; |
| 955 | } |
| 956 | |
| 957 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 958 | acpi_video_bus_get_one_device(struct acpi_device *device, |
| 959 | struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | { |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 961 | unsigned long long device_id; |
Matthew Garrett | e92a716 | 2010-01-12 14:17:03 -0500 | [diff] [blame] | 962 | int status, device_type; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 963 | struct acpi_video_device *data; |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 964 | struct acpi_video_device_attrib *attribute; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 966 | status = |
| 967 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 968 | /* Some device omits _ADR, we skip them instead of fail */ |
| 969 | if (ACPI_FAILURE(status)) |
| 970 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 972 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
| 973 | if (!data) |
| 974 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 976 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
| 977 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); |
| 978 | device->driver_data = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 980 | data->device_id = device_id; |
| 981 | data->video = video; |
| 982 | data->dev = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 984 | attribute = acpi_video_get_device_attr(video, device_id); |
Rui Zhang | 82cae99 | 2007-01-03 23:40:53 -0500 | [diff] [blame] | 985 | |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 986 | if (attribute && attribute->device_id_scheme) { |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 987 | switch (attribute->display_type) { |
| 988 | case ACPI_VIDEO_DISPLAY_CRT: |
| 989 | data->flags.crt = 1; |
| 990 | break; |
| 991 | case ACPI_VIDEO_DISPLAY_TV: |
| 992 | data->flags.tvout = 1; |
| 993 | break; |
| 994 | case ACPI_VIDEO_DISPLAY_DVI: |
| 995 | data->flags.dvi = 1; |
| 996 | break; |
| 997 | case ACPI_VIDEO_DISPLAY_LCD: |
| 998 | data->flags.lcd = 1; |
| 999 | break; |
| 1000 | default: |
| 1001 | data->flags.unknown = 1; |
| 1002 | break; |
| 1003 | } |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 1004 | if (attribute->bios_can_detect) |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1005 | data->flags.bios = 1; |
| 1006 | } else { |
| 1007 | /* Check for legacy IDs */ |
| 1008 | device_type = acpi_video_get_device_type(video, device_id); |
| 1009 | /* Ignore bits 16 and 18-20 */ |
| 1010 | switch (device_type & 0xffe2ffff) { |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 1011 | case ACPI_VIDEO_DISPLAY_LEGACY_MONITOR: |
| 1012 | data->flags.crt = 1; |
| 1013 | break; |
| 1014 | case ACPI_VIDEO_DISPLAY_LEGACY_PANEL: |
| 1015 | data->flags.lcd = 1; |
| 1016 | break; |
| 1017 | case ACPI_VIDEO_DISPLAY_LEGACY_TV: |
| 1018 | data->flags.tvout = 1; |
| 1019 | break; |
| 1020 | default: |
| 1021 | data->flags.unknown = 1; |
Matthew Garrett | e92a716 | 2010-01-12 14:17:03 -0500 | [diff] [blame] | 1022 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | } |
| 1024 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1025 | acpi_video_device_bind(video, data); |
| 1026 | acpi_video_device_find_cap(data); |
| 1027 | |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1028 | mutex_lock(&video->device_list_lock); |
| 1029 | list_add_tail(&data->entry, &video->video_device_list); |
| 1030 | mutex_unlock(&video->device_list_lock); |
| 1031 | |
| 1032 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | } |
| 1034 | |
| 1035 | /* |
| 1036 | * Arg: |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 1037 | * video : video bus device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | * |
| 1039 | * Return: |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 1040 | * none |
| 1041 | * |
| 1042 | * Enumerate the video device list of the video bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | * bind the ids with the corresponding video devices |
| 1044 | * under the video bus. |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1045 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1047 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | { |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1049 | struct acpi_video_device *dev; |
| 1050 | |
Dmitry Torokhov | bbac81f | 2007-11-05 11:43:32 -0500 | [diff] [blame] | 1051 | mutex_lock(&video->device_list_lock); |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1052 | |
| 1053 | list_for_each_entry(dev, &video->video_device_list, entry) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1054 | acpi_video_device_bind(video, dev); |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1055 | |
Dmitry Torokhov | bbac81f | 2007-11-05 11:43:32 -0500 | [diff] [blame] | 1056 | mutex_unlock(&video->device_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | } |
| 1058 | |
| 1059 | /* |
| 1060 | * Arg: |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 1061 | * video : video bus device |
| 1062 | * device : video output device under the video |
| 1063 | * bus |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | * |
| 1065 | * Return: |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 1066 | * none |
| 1067 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | * Bind the ids with the corresponding video devices |
| 1069 | * under the video bus. |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1070 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | |
| 1072 | static void |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1073 | acpi_video_device_bind(struct acpi_video_bus *video, |
| 1074 | struct acpi_video_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | { |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1076 | struct acpi_video_enumerated_device *ids; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1077 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1079 | for (i = 0; i < video->attached_count; i++) { |
| 1080 | ids = &video->attached_array[i]; |
| 1081 | if (device->device_id == (ids->value.int_val & 0xffff)) { |
| 1082 | ids->bind_info = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); |
| 1084 | } |
| 1085 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | } |
| 1087 | |
| 1088 | /* |
| 1089 | * Arg: |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 1090 | * video : video bus device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | * |
| 1092 | * Return: |
Felipe Contreras | 21fcb34 | 2013-08-01 18:43:59 -0500 | [diff] [blame] | 1093 | * < 0 : error |
| 1094 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | * Call _DOD to enumerate all devices attached to display adapter |
| 1096 | * |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1097 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | |
| 1099 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) |
| 1100 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1101 | int status; |
| 1102 | int count; |
| 1103 | int i; |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1104 | struct acpi_video_enumerated_device *active_list; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1105 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 1106 | union acpi_object *dod = NULL; |
| 1107 | union acpi_object *obj; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | |
Patrick Mochel | 9013026 | 2006-05-19 16:54:48 -0400 | [diff] [blame] | 1109 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | if (!ACPI_SUCCESS(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 1111 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1112 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | } |
| 1114 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 1115 | dod = buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 1117 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | status = -EFAULT; |
| 1119 | goto out; |
| 1120 | } |
| 1121 | |
| 1122 | 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] | 1123 | dod->package.count)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1125 | active_list = kcalloc(1 + dod->package.count, |
| 1126 | sizeof(struct acpi_video_enumerated_device), |
| 1127 | GFP_KERNEL); |
| 1128 | if (!active_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | status = -ENOMEM; |
| 1130 | goto out; |
| 1131 | } |
| 1132 | |
| 1133 | count = 0; |
| 1134 | for (i = 0; i < dod->package.count; i++) { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 1135 | obj = &dod->package.elements[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | |
| 1137 | if (obj->type != ACPI_TYPE_INTEGER) { |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1138 | printk(KERN_ERR PREFIX |
| 1139 | "Invalid _DOD data in element %d\n", i); |
| 1140 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | } |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1142 | |
| 1143 | active_list[count].value.int_val = obj->integer.value; |
| 1144 | active_list[count].bind_info = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1145 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
| 1146 | (int)obj->integer.value)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | count++; |
| 1148 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 1150 | kfree(video->attached_array); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1151 | |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1152 | video->attached_array = active_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | video->attached_count = count; |
Dmitry Torokhov | 78eed02 | 2007-11-05 11:43:33 -0500 | [diff] [blame] | 1154 | |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 1155 | out: |
Len Brown | 02438d8 | 2006-06-30 03:19:10 -0400 | [diff] [blame] | 1156 | kfree(buffer.pointer); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1157 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | } |
| 1159 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1160 | static int |
| 1161 | acpi_video_get_next_level(struct acpi_video_device *device, |
| 1162 | u32 level_current, u32 event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | { |
Alexey Starikovskiy | 63f0edf | 2007-09-03 16:30:08 +0400 | [diff] [blame] | 1164 | int min, max, min_above, max_below, i, l, delta = 255; |
Thomas Tuttle | f471518 | 2006-12-19 12:56:14 -0800 | [diff] [blame] | 1165 | max = max_below = 0; |
| 1166 | min = min_above = 255; |
Alexey Starikovskiy | 63f0edf | 2007-09-03 16:30:08 +0400 | [diff] [blame] | 1167 | /* Find closest level to level_current */ |
Zhao Yakui | 0a3db1c | 2009-02-02 11:33:41 +0800 | [diff] [blame] | 1168 | for (i = 2; i < device->brightness->count; i++) { |
Alexey Starikovskiy | 63f0edf | 2007-09-03 16:30:08 +0400 | [diff] [blame] | 1169 | l = device->brightness->levels[i]; |
| 1170 | if (abs(l - level_current) < abs(delta)) { |
| 1171 | delta = l - level_current; |
| 1172 | if (!delta) |
| 1173 | break; |
| 1174 | } |
| 1175 | } |
| 1176 | /* Ajust level_current to closest available level */ |
| 1177 | level_current += delta; |
Zhao Yakui | 0a3db1c | 2009-02-02 11:33:41 +0800 | [diff] [blame] | 1178 | for (i = 2; i < device->brightness->count; i++) { |
Thomas Tuttle | f471518 | 2006-12-19 12:56:14 -0800 | [diff] [blame] | 1179 | l = device->brightness->levels[i]; |
| 1180 | if (l < min) |
| 1181 | min = l; |
| 1182 | if (l > max) |
| 1183 | max = l; |
| 1184 | if (l < min_above && l > level_current) |
| 1185 | min_above = l; |
| 1186 | if (l > max_below && l < level_current) |
| 1187 | max_below = l; |
| 1188 | } |
| 1189 | |
| 1190 | switch (event) { |
| 1191 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: |
| 1192 | return (level_current < max) ? min_above : min; |
| 1193 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: |
| 1194 | return (level_current < max) ? min_above : max; |
| 1195 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: |
| 1196 | return (level_current > min) ? max_below : min; |
| 1197 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: |
| 1198 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: |
| 1199 | return 0; |
| 1200 | default: |
| 1201 | return level_current; |
| 1202 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | } |
| 1204 | |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1205 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1206 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | { |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 1208 | unsigned long long level_current, level_next; |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1209 | int result = -EINVAL; |
| 1210 | |
Aaron Lu | fbc9fe1 | 2013-10-11 21:27:45 +0800 | [diff] [blame] | 1211 | /* no warning message if acpi_backlight=vendor or a quirk is used */ |
| 1212 | if (!acpi_video_verify_backlight_support()) |
Zhang Rui | 28c32e9 | 2009-07-13 10:33:24 +0800 | [diff] [blame] | 1213 | return 0; |
| 1214 | |
Julia Jomantaite | 469778c | 2008-06-23 22:50:42 +0100 | [diff] [blame] | 1215 | if (!device->brightness) |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1216 | goto out; |
| 1217 | |
| 1218 | result = acpi_video_device_lcd_get_level_current(device, |
Danny Baumann | a89803d | 2013-03-19 16:22:50 +0000 | [diff] [blame] | 1219 | &level_current, |
| 1220 | false); |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1221 | if (result) |
| 1222 | goto out; |
| 1223 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | level_next = acpi_video_get_next_level(device, level_current, event); |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1225 | |
Zhang Rui | 24450c7 | 2009-03-18 16:27:10 +0800 | [diff] [blame] | 1226 | result = acpi_video_device_lcd_set_level(device, level_next); |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1227 | |
Matthew Garrett | 3634274 | 2009-07-14 17:06:03 +0100 | [diff] [blame] | 1228 | if (!result) |
| 1229 | backlight_force_update(device->backlight, |
| 1230 | BACKLIGHT_UPDATE_HOTKEY); |
| 1231 | |
Zhang Rui | c8890f9 | 2009-03-18 16:27:08 +0800 | [diff] [blame] | 1232 | out: |
| 1233 | if (result) |
| 1234 | printk(KERN_ERR PREFIX "Failed to switch the brightness\n"); |
| 1235 | |
| 1236 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | } |
| 1238 | |
Matthew Garrett | e92a716 | 2010-01-12 14:17:03 -0500 | [diff] [blame] | 1239 | int acpi_video_get_edid(struct acpi_device *device, int type, int device_id, |
| 1240 | void **edid) |
| 1241 | { |
| 1242 | struct acpi_video_bus *video; |
| 1243 | struct acpi_video_device *video_device; |
| 1244 | union acpi_object *buffer = NULL; |
| 1245 | acpi_status status; |
| 1246 | int i, length; |
| 1247 | |
| 1248 | if (!device || !acpi_driver_data(device)) |
| 1249 | return -EINVAL; |
| 1250 | |
| 1251 | video = acpi_driver_data(device); |
| 1252 | |
| 1253 | for (i = 0; i < video->attached_count; i++) { |
| 1254 | video_device = video->attached_array[i].bind_info; |
| 1255 | length = 256; |
| 1256 | |
| 1257 | if (!video_device) |
| 1258 | continue; |
| 1259 | |
Zhang Rui | 8206955 | 2010-12-06 15:04:24 +0800 | [diff] [blame] | 1260 | if (!video_device->cap._DDC) |
| 1261 | continue; |
| 1262 | |
Matthew Garrett | e92a716 | 2010-01-12 14:17:03 -0500 | [diff] [blame] | 1263 | if (type) { |
| 1264 | switch (type) { |
| 1265 | case ACPI_VIDEO_DISPLAY_CRT: |
| 1266 | if (!video_device->flags.crt) |
| 1267 | continue; |
| 1268 | break; |
| 1269 | case ACPI_VIDEO_DISPLAY_TV: |
| 1270 | if (!video_device->flags.tvout) |
| 1271 | continue; |
| 1272 | break; |
| 1273 | case ACPI_VIDEO_DISPLAY_DVI: |
| 1274 | if (!video_device->flags.dvi) |
| 1275 | continue; |
| 1276 | break; |
| 1277 | case ACPI_VIDEO_DISPLAY_LCD: |
| 1278 | if (!video_device->flags.lcd) |
| 1279 | continue; |
| 1280 | break; |
| 1281 | } |
| 1282 | } else if (video_device->device_id != device_id) { |
| 1283 | continue; |
| 1284 | } |
| 1285 | |
| 1286 | status = acpi_video_device_EDID(video_device, &buffer, length); |
| 1287 | |
| 1288 | if (ACPI_FAILURE(status) || !buffer || |
| 1289 | buffer->type != ACPI_TYPE_BUFFER) { |
| 1290 | length = 128; |
| 1291 | status = acpi_video_device_EDID(video_device, &buffer, |
| 1292 | length); |
| 1293 | if (ACPI_FAILURE(status) || !buffer || |
| 1294 | buffer->type != ACPI_TYPE_BUFFER) { |
| 1295 | continue; |
| 1296 | } |
| 1297 | } |
| 1298 | |
| 1299 | *edid = buffer->buffer.pointer; |
| 1300 | return length; |
| 1301 | } |
| 1302 | |
| 1303 | return -ENODEV; |
| 1304 | } |
| 1305 | EXPORT_SYMBOL(acpi_video_get_edid); |
| 1306 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1308 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
| 1309 | struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1310 | { |
Igor Murzov | fba4e08 | 2012-10-13 04:41:25 +0400 | [diff] [blame] | 1311 | int status = 0; |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1312 | struct acpi_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | |
Igor Murzov | fba4e08 | 2012-10-13 04:41:25 +0400 | [diff] [blame] | 1314 | /* |
| 1315 | * There are systems where video module known to work fine regardless |
| 1316 | * of broken _DOD and ignoring returned value here doesn't cause |
| 1317 | * any issues later. |
| 1318 | */ |
| 1319 | acpi_video_device_enumerate(video); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | |
Dmitry Torokhov | ff102ea | 2007-11-05 11:43:31 -0500 | [diff] [blame] | 1321 | list_for_each_entry(dev, &device->children, node) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | |
| 1323 | status = acpi_video_bus_get_one_device(dev, video); |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 1324 | if (status) { |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1325 | dev_err(&dev->dev, "Can't attach device\n"); |
| 1326 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1328 | } |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1329 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | } |
| 1331 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | /* acpi_video interface */ |
| 1333 | |
Aaron Lu | efaa14c | 2013-07-16 13:08:05 +0800 | [diff] [blame] | 1334 | /* |
| 1335 | * Win8 requires setting bit2 of _DOS to let firmware know it shouldn't |
| 1336 | * preform any automatic brightness change on receiving a notification. |
| 1337 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1338 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | { |
Aaron Lu | efaa14c | 2013-07-16 13:08:05 +0800 | [diff] [blame] | 1340 | return acpi_video_bus_DOS(video, 0, |
Aaron Lu | fbc9fe1 | 2013-10-11 21:27:45 +0800 | [diff] [blame] | 1341 | acpi_osi_is_win8() ? 1 : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | } |
| 1343 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1344 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | { |
Aaron Lu | efaa14c | 2013-07-16 13:08:05 +0800 | [diff] [blame] | 1346 | return acpi_video_bus_DOS(video, 0, |
Aaron Lu | fbc9fe1 | 2013-10-11 21:27:45 +0800 | [diff] [blame] | 1347 | acpi_osi_is_win8() ? 0 : 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | } |
| 1349 | |
Bjorn Helgaas | 7015558 | 2009-04-07 15:37:11 +0000 | [diff] [blame] | 1350 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | { |
Bjorn Helgaas | 7015558 | 2009-04-07 15:37:11 +0000 | [diff] [blame] | 1352 | struct acpi_video_bus *video = acpi_driver_data(device); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1353 | struct input_dev *input; |
Matthew Garrett | 17c452f | 2009-12-11 17:40:46 -0500 | [diff] [blame] | 1354 | int keycode = 0; |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1355 | |
Aaron Lu | 67b662e | 2013-10-11 21:27:44 +0800 | [diff] [blame] | 1356 | if (!video || !video->input) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1357 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1359 | input = video->input; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1360 | |
| 1361 | switch (event) { |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 1362 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | * most likely via hotkey. */ |
Luca Tettamanti | 8a37c65 | 2012-08-02 15:30:27 +0200 | [diff] [blame] | 1364 | keycode = KEY_SWITCHVIDEOMODE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | break; |
| 1366 | |
Julius Volz | 98fb8fe | 2007-02-20 16:38:40 +0100 | [diff] [blame] | 1367 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | * connector. */ |
| 1369 | acpi_video_device_enumerate(video); |
| 1370 | acpi_video_device_rebind(video); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1371 | keycode = KEY_SWITCHVIDEOMODE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | break; |
| 1373 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1374 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1375 | keycode = KEY_SWITCHVIDEOMODE; |
| 1376 | break; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1377 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1378 | keycode = KEY_VIDEO_NEXT; |
| 1379 | break; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1380 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1381 | keycode = KEY_VIDEO_PREV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | break; |
| 1383 | |
| 1384 | default: |
| 1385 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1386 | "Unsupported event [0x%x]\n", event)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | break; |
| 1388 | } |
| 1389 | |
Luca Tettamanti | 8a37c65 | 2012-08-02 15:30:27 +0200 | [diff] [blame] | 1390 | if (acpi_notifier_call_chain(device, event, 0)) |
| 1391 | /* Something vetoed the keypress. */ |
| 1392 | keycode = 0; |
Matthew Garrett | 17c452f | 2009-12-11 17:40:46 -0500 | [diff] [blame] | 1393 | |
| 1394 | if (keycode) { |
| 1395 | input_report_key(input, keycode, 1); |
| 1396 | input_sync(input); |
| 1397 | input_report_key(input, keycode, 0); |
| 1398 | input_sync(input); |
| 1399 | } |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1400 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1401 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | } |
| 1403 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1404 | 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] | 1405 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 1406 | struct acpi_video_device *video_device = data; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1407 | struct acpi_device *device = NULL; |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1408 | struct acpi_video_bus *bus; |
| 1409 | struct input_dev *input; |
Matthew Garrett | 17c452f | 2009-12-11 17:40:46 -0500 | [diff] [blame] | 1410 | int keycode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | if (!video_device) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1413 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | |
Patrick Mochel | e6afa0d | 2006-05-19 16:54:40 -0400 | [diff] [blame] | 1415 | device = video_device->dev; |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1416 | bus = video_device->video; |
| 1417 | input = bus->input; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | |
| 1419 | switch (event) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1420 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
Zhang Rui | 8a681a4 | 2008-01-25 14:47:49 +0800 | [diff] [blame] | 1421 | if (brightness_switch_enabled) |
| 1422 | acpi_video_switch_brightness(video_device, event); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1423 | keycode = KEY_BRIGHTNESS_CYCLE; |
| 1424 | break; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1425 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
Zhang Rui | 8a681a4 | 2008-01-25 14:47:49 +0800 | [diff] [blame] | 1426 | if (brightness_switch_enabled) |
| 1427 | acpi_video_switch_brightness(video_device, event); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1428 | keycode = KEY_BRIGHTNESSUP; |
| 1429 | break; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1430 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
Zhang Rui | 8a681a4 | 2008-01-25 14:47:49 +0800 | [diff] [blame] | 1431 | if (brightness_switch_enabled) |
| 1432 | acpi_video_switch_brightness(video_device, event); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1433 | keycode = KEY_BRIGHTNESSDOWN; |
| 1434 | break; |
Justin P. Mattock | 70f23fd | 2011-05-10 10:16:21 +0200 | [diff] [blame] | 1435 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightness */ |
Zhang Rui | 8a681a4 | 2008-01-25 14:47:49 +0800 | [diff] [blame] | 1436 | if (brightness_switch_enabled) |
| 1437 | acpi_video_switch_brightness(video_device, event); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1438 | keycode = KEY_BRIGHTNESS_ZERO; |
| 1439 | break; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1440 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
Zhang Rui | 8a681a4 | 2008-01-25 14:47:49 +0800 | [diff] [blame] | 1441 | if (brightness_switch_enabled) |
| 1442 | acpi_video_switch_brightness(video_device, event); |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1443 | keycode = KEY_DISPLAY_OFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1444 | break; |
| 1445 | default: |
| 1446 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1447 | "Unsupported event [0x%x]\n", event)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | break; |
| 1449 | } |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1450 | |
Zhang Rui | 7761f63 | 2008-01-25 14:48:12 +0800 | [diff] [blame] | 1451 | acpi_notifier_call_chain(device, event, 0); |
Matthew Garrett | 17c452f | 2009-12-11 17:40:46 -0500 | [diff] [blame] | 1452 | |
| 1453 | if (keycode) { |
| 1454 | input_report_key(input, keycode, 1); |
| 1455 | input_sync(input); |
| 1456 | input_report_key(input, keycode, 0); |
| 1457 | input_sync(input); |
| 1458 | } |
Luming Yu | e9dab19 | 2007-08-20 18:23:53 +0800 | [diff] [blame] | 1459 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1460 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | } |
| 1462 | |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1463 | static int acpi_video_resume(struct notifier_block *nb, |
| 1464 | unsigned long val, void *ign) |
Matthew Garrett | 863c149 | 2008-02-04 23:31:24 -0800 | [diff] [blame] | 1465 | { |
| 1466 | struct acpi_video_bus *video; |
| 1467 | struct acpi_video_device *video_device; |
| 1468 | int i; |
| 1469 | |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1470 | switch (val) { |
| 1471 | case PM_HIBERNATION_PREPARE: |
| 1472 | case PM_SUSPEND_PREPARE: |
| 1473 | case PM_RESTORE_PREPARE: |
| 1474 | return NOTIFY_DONE; |
| 1475 | } |
Matthew Garrett | 863c149 | 2008-02-04 23:31:24 -0800 | [diff] [blame] | 1476 | |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1477 | video = container_of(nb, struct acpi_video_bus, pm_nb); |
| 1478 | |
| 1479 | dev_info(&video->device->dev, "Restoring backlight state\n"); |
Matthew Garrett | 863c149 | 2008-02-04 23:31:24 -0800 | [diff] [blame] | 1480 | |
| 1481 | for (i = 0; i < video->attached_count; i++) { |
| 1482 | video_device = video->attached_array[i].bind_info; |
| 1483 | if (video_device && video_device->backlight) |
| 1484 | acpi_video_set_brightness(video_device->backlight); |
| 1485 | } |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1486 | |
| 1487 | return NOTIFY_OK; |
Matthew Garrett | 863c149 | 2008-02-04 23:31:24 -0800 | [diff] [blame] | 1488 | } |
| 1489 | |
Zhang Rui | c504f8c | 2009-12-30 15:59:23 +0800 | [diff] [blame] | 1490 | static acpi_status |
| 1491 | acpi_video_bus_match(acpi_handle handle, u32 level, void *context, |
| 1492 | void **return_value) |
| 1493 | { |
| 1494 | struct acpi_device *device = context; |
| 1495 | struct acpi_device *sibling; |
| 1496 | int result; |
| 1497 | |
| 1498 | if (handle == device->handle) |
| 1499 | return AE_CTRL_TERMINATE; |
| 1500 | |
| 1501 | result = acpi_bus_get_device(handle, &sibling); |
| 1502 | if (result) |
| 1503 | return AE_OK; |
| 1504 | |
| 1505 | if (!strcmp(acpi_device_name(sibling), ACPI_VIDEO_BUS_NAME)) |
| 1506 | return AE_ALREADY_EXISTS; |
| 1507 | |
| 1508 | return AE_OK; |
| 1509 | } |
| 1510 | |
Aaron Lu | 67b662e | 2013-10-11 21:27:44 +0800 | [diff] [blame] | 1511 | static void acpi_video_dev_register_backlight(struct acpi_video_device *device) |
| 1512 | { |
Aaron Lu | fbc9fe1 | 2013-10-11 21:27:45 +0800 | [diff] [blame] | 1513 | if (acpi_video_verify_backlight_support()) { |
Aaron Lu | 67b662e | 2013-10-11 21:27:44 +0800 | [diff] [blame] | 1514 | struct backlight_properties props; |
| 1515 | struct pci_dev *pdev; |
| 1516 | acpi_handle acpi_parent; |
| 1517 | struct device *parent = NULL; |
| 1518 | int result; |
| 1519 | static int count; |
| 1520 | char *name; |
| 1521 | |
| 1522 | result = acpi_video_init_brightness(device); |
| 1523 | if (result) |
| 1524 | return; |
| 1525 | name = kasprintf(GFP_KERNEL, "acpi_video%d", count); |
| 1526 | if (!name) |
| 1527 | return; |
| 1528 | count++; |
| 1529 | |
| 1530 | acpi_get_parent(device->dev->handle, &acpi_parent); |
| 1531 | |
| 1532 | pdev = acpi_get_pci_dev(acpi_parent); |
| 1533 | if (pdev) { |
| 1534 | parent = &pdev->dev; |
| 1535 | pci_dev_put(pdev); |
| 1536 | } |
| 1537 | |
| 1538 | memset(&props, 0, sizeof(struct backlight_properties)); |
| 1539 | props.type = BACKLIGHT_FIRMWARE; |
| 1540 | props.max_brightness = device->brightness->count - 3; |
| 1541 | device->backlight = backlight_device_register(name, |
| 1542 | parent, |
| 1543 | device, |
| 1544 | &acpi_backlight_ops, |
| 1545 | &props); |
| 1546 | kfree(name); |
| 1547 | if (IS_ERR(device->backlight)) |
| 1548 | return; |
| 1549 | |
| 1550 | /* |
| 1551 | * Save current brightness level in case we have to restore it |
| 1552 | * before acpi_video_device_lcd_set_level() is called next time. |
| 1553 | */ |
| 1554 | device->backlight->props.brightness = |
| 1555 | acpi_video_get_brightness(device->backlight); |
| 1556 | |
| 1557 | device->cooling_dev = thermal_cooling_device_register("LCD", |
| 1558 | device->dev, &video_cooling_ops); |
| 1559 | if (IS_ERR(device->cooling_dev)) { |
| 1560 | /* |
| 1561 | * Set cooling_dev to NULL so we don't crash trying to |
| 1562 | * free it. |
| 1563 | * Also, why the hell we are returning early and |
| 1564 | * not attempt to register video output if cooling |
| 1565 | * device registration failed? |
| 1566 | * -- dtor |
| 1567 | */ |
| 1568 | device->cooling_dev = NULL; |
| 1569 | return; |
| 1570 | } |
| 1571 | |
| 1572 | dev_info(&device->dev->dev, "registered as cooling_device%d\n", |
| 1573 | device->cooling_dev->id); |
| 1574 | result = sysfs_create_link(&device->dev->dev.kobj, |
| 1575 | &device->cooling_dev->device.kobj, |
| 1576 | "thermal_cooling"); |
| 1577 | if (result) |
| 1578 | printk(KERN_ERR PREFIX "Create sysfs link\n"); |
| 1579 | result = sysfs_create_link(&device->cooling_dev->device.kobj, |
| 1580 | &device->dev->dev.kobj, "device"); |
| 1581 | if (result) |
| 1582 | printk(KERN_ERR PREFIX "Create sysfs link\n"); |
| 1583 | } |
| 1584 | } |
| 1585 | |
| 1586 | static int acpi_video_bus_register_backlight(struct acpi_video_bus *video) |
| 1587 | { |
| 1588 | struct acpi_video_device *dev; |
| 1589 | |
| 1590 | mutex_lock(&video->device_list_lock); |
| 1591 | list_for_each_entry(dev, &video->video_device_list, entry) |
| 1592 | acpi_video_dev_register_backlight(dev); |
| 1593 | mutex_unlock(&video->device_list_lock); |
| 1594 | |
| 1595 | video->pm_nb.notifier_call = acpi_video_resume; |
| 1596 | video->pm_nb.priority = 0; |
| 1597 | return register_pm_notifier(&video->pm_nb); |
| 1598 | } |
| 1599 | |
| 1600 | static void acpi_video_dev_unregister_backlight(struct acpi_video_device *device) |
| 1601 | { |
| 1602 | if (device->backlight) { |
| 1603 | backlight_device_unregister(device->backlight); |
| 1604 | device->backlight = NULL; |
| 1605 | } |
| 1606 | if (device->brightness) { |
| 1607 | kfree(device->brightness->levels); |
| 1608 | kfree(device->brightness); |
| 1609 | device->brightness = NULL; |
| 1610 | } |
| 1611 | if (device->cooling_dev) { |
| 1612 | sysfs_remove_link(&device->dev->dev.kobj, "thermal_cooling"); |
| 1613 | sysfs_remove_link(&device->cooling_dev->device.kobj, "device"); |
| 1614 | thermal_cooling_device_unregister(device->cooling_dev); |
| 1615 | device->cooling_dev = NULL; |
| 1616 | } |
| 1617 | } |
| 1618 | |
| 1619 | static int acpi_video_bus_unregister_backlight(struct acpi_video_bus *video) |
| 1620 | { |
| 1621 | struct acpi_video_device *dev; |
| 1622 | int error = unregister_pm_notifier(&video->pm_nb); |
| 1623 | |
| 1624 | mutex_lock(&video->device_list_lock); |
| 1625 | list_for_each_entry(dev, &video->video_device_list, entry) |
| 1626 | acpi_video_dev_unregister_backlight(dev); |
| 1627 | mutex_unlock(&video->device_list_lock); |
| 1628 | |
| 1629 | return error; |
| 1630 | } |
| 1631 | |
| 1632 | static void acpi_video_dev_add_notify_handler(struct acpi_video_device *device) |
| 1633 | { |
| 1634 | acpi_status status; |
| 1635 | struct acpi_device *adev = device->dev; |
| 1636 | |
| 1637 | status = acpi_install_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, |
| 1638 | acpi_video_device_notify, device); |
| 1639 | if (ACPI_FAILURE(status)) |
| 1640 | dev_err(&adev->dev, "Error installing notify handler\n"); |
| 1641 | else |
| 1642 | device->flags.notify = 1; |
| 1643 | } |
| 1644 | |
| 1645 | static int acpi_video_bus_add_notify_handler(struct acpi_video_bus *video) |
| 1646 | { |
| 1647 | struct input_dev *input; |
| 1648 | struct acpi_video_device *dev; |
| 1649 | int error; |
| 1650 | |
| 1651 | video->input = input = input_allocate_device(); |
| 1652 | if (!input) { |
| 1653 | error = -ENOMEM; |
| 1654 | goto out; |
| 1655 | } |
| 1656 | |
| 1657 | error = acpi_video_bus_start_devices(video); |
| 1658 | if (error) |
| 1659 | goto err_free_input; |
| 1660 | |
| 1661 | snprintf(video->phys, sizeof(video->phys), |
| 1662 | "%s/video/input0", acpi_device_hid(video->device)); |
| 1663 | |
| 1664 | input->name = acpi_device_name(video->device); |
| 1665 | input->phys = video->phys; |
| 1666 | input->id.bustype = BUS_HOST; |
| 1667 | input->id.product = 0x06; |
| 1668 | input->dev.parent = &video->device->dev; |
| 1669 | input->evbit[0] = BIT(EV_KEY); |
| 1670 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); |
| 1671 | set_bit(KEY_VIDEO_NEXT, input->keybit); |
| 1672 | set_bit(KEY_VIDEO_PREV, input->keybit); |
| 1673 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); |
| 1674 | set_bit(KEY_BRIGHTNESSUP, input->keybit); |
| 1675 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); |
| 1676 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); |
| 1677 | set_bit(KEY_DISPLAY_OFF, input->keybit); |
| 1678 | |
| 1679 | error = input_register_device(input); |
| 1680 | if (error) |
| 1681 | goto err_stop_dev; |
| 1682 | |
| 1683 | mutex_lock(&video->device_list_lock); |
| 1684 | list_for_each_entry(dev, &video->video_device_list, entry) |
| 1685 | acpi_video_dev_add_notify_handler(dev); |
| 1686 | mutex_unlock(&video->device_list_lock); |
| 1687 | |
| 1688 | return 0; |
| 1689 | |
| 1690 | err_stop_dev: |
| 1691 | acpi_video_bus_stop_devices(video); |
| 1692 | err_free_input: |
| 1693 | input_free_device(input); |
| 1694 | video->input = NULL; |
| 1695 | out: |
| 1696 | return error; |
| 1697 | } |
| 1698 | |
| 1699 | static void acpi_video_dev_remove_notify_handler(struct acpi_video_device *dev) |
| 1700 | { |
| 1701 | if (dev->flags.notify) { |
| 1702 | acpi_remove_notify_handler(dev->dev->handle, ACPI_DEVICE_NOTIFY, |
| 1703 | acpi_video_device_notify); |
| 1704 | dev->flags.notify = 0; |
| 1705 | } |
| 1706 | } |
| 1707 | |
| 1708 | static void acpi_video_bus_remove_notify_handler(struct acpi_video_bus *video) |
| 1709 | { |
| 1710 | struct acpi_video_device *dev; |
| 1711 | |
| 1712 | mutex_lock(&video->device_list_lock); |
| 1713 | list_for_each_entry(dev, &video->video_device_list, entry) |
| 1714 | acpi_video_dev_remove_notify_handler(dev); |
| 1715 | mutex_unlock(&video->device_list_lock); |
| 1716 | |
| 1717 | acpi_video_bus_stop_devices(video); |
| 1718 | input_unregister_device(video->input); |
| 1719 | video->input = NULL; |
| 1720 | } |
| 1721 | |
| 1722 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
| 1723 | { |
| 1724 | struct acpi_video_device *dev, *next; |
| 1725 | |
| 1726 | mutex_lock(&video->device_list_lock); |
| 1727 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
| 1728 | list_del(&dev->entry); |
| 1729 | kfree(dev); |
| 1730 | } |
| 1731 | mutex_unlock(&video->device_list_lock); |
| 1732 | |
| 1733 | return 0; |
| 1734 | } |
| 1735 | |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1736 | static int instance; |
| 1737 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1738 | static int acpi_video_bus_add(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | { |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1740 | struct acpi_video_bus *video; |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1741 | int error; |
Zhang Rui | c504f8c | 2009-12-30 15:59:23 +0800 | [diff] [blame] | 1742 | acpi_status status; |
| 1743 | |
| 1744 | status = acpi_walk_namespace(ACPI_TYPE_DEVICE, |
| 1745 | device->parent->handle, 1, |
| 1746 | acpi_video_bus_match, NULL, |
| 1747 | device, NULL); |
| 1748 | if (status == AE_ALREADY_EXISTS) { |
| 1749 | printk(KERN_WARNING FW_BUG |
| 1750 | "Duplicate ACPI video bus devices for the" |
| 1751 | " same VGA controller, please try module " |
| 1752 | "parameter \"video.allow_duplicates=1\"" |
| 1753 | "if the current driver doesn't work.\n"); |
| 1754 | if (!allow_duplicates) |
| 1755 | return -ENODEV; |
| 1756 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | |
Burman Yan | 36bcbec | 2006-12-19 12:56:11 -0800 | [diff] [blame] | 1758 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | if (!video) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1760 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | |
Zhang Rui | e6d9da1 | 2007-08-25 02:23:31 -0400 | [diff] [blame] | 1762 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
| 1763 | if (!strcmp(device->pnp.bus_id, "VID")) { |
| 1764 | if (instance) |
| 1765 | device->pnp.bus_id[3] = '0' + instance; |
Felipe Contreras | 915ea7e | 2013-08-03 22:12:50 +0200 | [diff] [blame] | 1766 | instance++; |
Zhang Rui | e6d9da1 | 2007-08-25 02:23:31 -0400 | [diff] [blame] | 1767 | } |
Zhao Yakui | f3b39f1 | 2009-02-02 22:55:01 -0500 | [diff] [blame] | 1768 | /* a hack to fix the duplicate name "VGA" problem on Pa 3553 */ |
| 1769 | if (!strcmp(device->pnp.bus_id, "VGA")) { |
| 1770 | if (instance) |
| 1771 | device->pnp.bus_id[3] = '0' + instance; |
| 1772 | instance++; |
| 1773 | } |
Zhang Rui | e6d9da1 | 2007-08-25 02:23:31 -0400 | [diff] [blame] | 1774 | |
Patrick Mochel | e6afa0d | 2006-05-19 16:54:40 -0400 | [diff] [blame] | 1775 | video->device = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
| 1777 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); |
Pavel Machek | db89b4f | 2008-09-22 14:37:34 -0700 | [diff] [blame] | 1778 | device->driver_data = video; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1779 | |
| 1780 | acpi_video_bus_find_cap(video); |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1781 | error = acpi_video_bus_check(video); |
| 1782 | if (error) |
| 1783 | goto err_free_video; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1784 | |
Dmitry Torokhov | bbac81f | 2007-11-05 11:43:32 -0500 | [diff] [blame] | 1785 | mutex_init(&video->device_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1786 | INIT_LIST_HEAD(&video->video_device_list); |
| 1787 | |
Igor Murzov | ea9f885 | 2012-03-30 21:32:08 +0400 | [diff] [blame] | 1788 | error = acpi_video_bus_get_devices(video, device); |
| 1789 | if (error) |
Aaron Lu | 91e13aa | 2013-04-25 02:47:49 +0000 | [diff] [blame] | 1790 | goto err_put_video; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1791 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1792 | 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] | 1793 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
| 1794 | video->flags.multihead ? "yes" : "no", |
| 1795 | video->flags.rom ? "yes" : "no", |
| 1796 | video->flags.post ? "yes" : "no"); |
Aaron Lu | 67b662e | 2013-10-11 21:27:44 +0800 | [diff] [blame] | 1797 | mutex_lock(&video_list_lock); |
| 1798 | list_add_tail(&video->entry, &video_bus_head); |
| 1799 | mutex_unlock(&video_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | |
Aaron Lu | 67b662e | 2013-10-11 21:27:44 +0800 | [diff] [blame] | 1801 | acpi_video_bus_register_backlight(video); |
| 1802 | acpi_video_bus_add_notify_handler(video); |
Rafael J. Wysocki | ac7729d | 2010-04-05 01:43:51 +0200 | [diff] [blame] | 1803 | |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1804 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | |
Aaron Lu | 67b662e | 2013-10-11 21:27:44 +0800 | [diff] [blame] | 1806 | err_put_video: |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1807 | acpi_video_bus_put_devices(video); |
| 1808 | kfree(video->attached_array); |
Aaron Lu | 67b662e | 2013-10-11 21:27:44 +0800 | [diff] [blame] | 1809 | err_free_video: |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1810 | kfree(video); |
Pavel Machek | db89b4f | 2008-09-22 14:37:34 -0700 | [diff] [blame] | 1811 | device->driver_data = NULL; |
Dmitry Torokhov | f51e839 | 2007-11-05 11:43:30 -0500 | [diff] [blame] | 1812 | |
| 1813 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1814 | } |
| 1815 | |
Rafael J. Wysocki | 51fac83 | 2013-01-24 00:24:48 +0100 | [diff] [blame] | 1816 | static int acpi_video_bus_remove(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1817 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1818 | struct acpi_video_bus *video = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1820 | |
| 1821 | if (!device || !acpi_driver_data(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1822 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1823 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 1824 | video = acpi_driver_data(device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1825 | |
Aaron Lu | 67b662e | 2013-10-11 21:27:44 +0800 | [diff] [blame] | 1826 | acpi_video_bus_remove_notify_handler(video); |
| 1827 | acpi_video_bus_unregister_backlight(video); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | acpi_video_bus_put_devices(video); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | |
Aaron Lu | 67b662e | 2013-10-11 21:27:44 +0800 | [diff] [blame] | 1830 | mutex_lock(&video_list_lock); |
| 1831 | list_del(&video->entry); |
| 1832 | mutex_unlock(&video_list_lock); |
| 1833 | |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 1834 | kfree(video->attached_array); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1835 | kfree(video); |
| 1836 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1837 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1838 | } |
| 1839 | |
Alan Cox | c6996bd | 2012-04-25 14:33:48 +0100 | [diff] [blame] | 1840 | static int __init is_i740(struct pci_dev *dev) |
| 1841 | { |
| 1842 | if (dev->device == 0x00D1) |
| 1843 | return 1; |
| 1844 | if (dev->device == 0x7000) |
| 1845 | return 1; |
| 1846 | return 0; |
| 1847 | } |
| 1848 | |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1849 | static int __init intel_opregion_present(void) |
| 1850 | { |
Alan Cox | c6996bd | 2012-04-25 14:33:48 +0100 | [diff] [blame] | 1851 | int opregion = 0; |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1852 | struct pci_dev *dev = NULL; |
| 1853 | u32 address; |
| 1854 | |
| 1855 | for_each_pci_dev(dev) { |
| 1856 | if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) |
| 1857 | continue; |
| 1858 | if (dev->vendor != PCI_VENDOR_ID_INTEL) |
| 1859 | continue; |
Alan Cox | c6996bd | 2012-04-25 14:33:48 +0100 | [diff] [blame] | 1860 | /* We don't want to poke around undefined i740 registers */ |
| 1861 | if (is_i740(dev)) |
| 1862 | continue; |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1863 | pci_read_config_dword(dev, 0xfc, &address); |
| 1864 | if (!address) |
| 1865 | continue; |
Alan Cox | c6996bd | 2012-04-25 14:33:48 +0100 | [diff] [blame] | 1866 | opregion = 1; |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1867 | } |
Alan Cox | c6996bd | 2012-04-25 14:33:48 +0100 | [diff] [blame] | 1868 | return opregion; |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1869 | } |
| 1870 | |
Rafael J. Wysocki | 8e5c2b7 | 2013-07-25 21:43:39 +0200 | [diff] [blame] | 1871 | int acpi_video_register(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | { |
Rafael J. Wysocki | 8e5c2b7 | 2013-07-25 21:43:39 +0200 | [diff] [blame] | 1873 | int result = 0; |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1874 | if (register_count) { |
| 1875 | /* |
Rafael J. Wysocki | 8e5c2b7 | 2013-07-25 21:43:39 +0200 | [diff] [blame] | 1876 | * if the function of acpi_video_register is already called, |
| 1877 | * don't register the acpi_vide_bus again and return no error. |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1878 | */ |
| 1879 | return 0; |
| 1880 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | |
Aaron Lu | 67b662e | 2013-10-11 21:27:44 +0800 | [diff] [blame] | 1882 | mutex_init(&video_list_lock); |
| 1883 | INIT_LIST_HEAD(&video_bus_head); |
| 1884 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1885 | result = acpi_bus_register_driver(&acpi_video_bus); |
Zhang Rui | 39fe394 | 2010-10-08 13:55:11 +0800 | [diff] [blame] | 1886 | if (result < 0) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1887 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1889 | /* |
| 1890 | * When the acpi_video_bus is loaded successfully, increase |
| 1891 | * the counter reference. |
| 1892 | */ |
| 1893 | register_count = 1; |
| 1894 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1895 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1896 | } |
Rafael J. Wysocki | 8e5c2b7 | 2013-07-25 21:43:39 +0200 | [diff] [blame] | 1897 | EXPORT_SYMBOL(acpi_video_register); |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1898 | |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1899 | void acpi_video_unregister(void) |
| 1900 | { |
| 1901 | if (!register_count) { |
| 1902 | /* |
| 1903 | * If the acpi video bus is already unloaded, don't |
| 1904 | * unload it again and return directly. |
| 1905 | */ |
| 1906 | return; |
| 1907 | } |
| 1908 | acpi_bus_unregister_driver(&acpi_video_bus); |
| 1909 | |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1910 | register_count = 0; |
| 1911 | |
| 1912 | return; |
| 1913 | } |
| 1914 | EXPORT_SYMBOL(acpi_video_unregister); |
| 1915 | |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1916 | /* |
| 1917 | * This is kind of nasty. Hardware using Intel chipsets may require |
| 1918 | * the video opregion code to be run first in order to initialise |
| 1919 | * state before any ACPI video calls are made. To handle this we defer |
| 1920 | * registration of the video class until the opregion code has run. |
| 1921 | */ |
| 1922 | |
| 1923 | static int __init acpi_video_init(void) |
| 1924 | { |
Zhang Rui | 45cb50e | 2009-04-24 12:13:18 -0400 | [diff] [blame] | 1925 | dmi_check_system(video_dmi_table); |
| 1926 | |
Matthew Garrett | 74a365b | 2009-03-19 21:35:39 +0000 | [diff] [blame] | 1927 | if (intel_opregion_present()) |
| 1928 | return 0; |
| 1929 | |
| 1930 | return acpi_video_register(); |
| 1931 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1932 | |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1933 | static void __exit acpi_video_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1934 | { |
Zhao Yakui | 86e437f | 2009-06-16 11:23:13 +0800 | [diff] [blame] | 1935 | acpi_video_unregister(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1936 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1937 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1938 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1939 | |
| 1940 | module_init(acpi_video_init); |
| 1941 | module_exit(acpi_video_exit); |