diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/acpica/aclocal.h | 13 | ||||
| -rw-r--r-- | drivers/acpi/battery.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/internal.h | 9 | ||||
| -rw-r--r-- | drivers/acpi/video.c | 23 | ||||
| -rw-r--r-- | drivers/acpi/video_detect.c | 8 |
5 files changed, 37 insertions, 18 deletions
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index dfed26545ba2..d4a4901637cd 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -931,19 +931,6 @@ struct acpi_bit_register_info { /* Structs and definitions for _OSI support and I/O port validation */ -#define ACPI_OSI_WIN_2000 0x01 -#define ACPI_OSI_WIN_XP 0x02 -#define ACPI_OSI_WIN_XP_SP1 0x03 -#define ACPI_OSI_WINSRV_2003 0x04 -#define ACPI_OSI_WIN_XP_SP2 0x05 -#define ACPI_OSI_WINSRV_2003_SP1 0x06 -#define ACPI_OSI_WIN_VISTA 0x07 -#define ACPI_OSI_WINSRV_2008 0x08 -#define ACPI_OSI_WIN_VISTA_SP1 0x09 -#define ACPI_OSI_WIN_VISTA_SP2 0x0A -#define ACPI_OSI_WIN_7 0x0B -#define ACPI_OSI_WIN_8 0x0C - #define ACPI_ALWAYS_ILLEGAL 0x00 struct acpi_interface_info { diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 082b4dd252a8..d405fbad406a 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -117,6 +117,7 @@ struct acpi_battery { struct acpi_device *device; struct notifier_block pm_nb; unsigned long update_time; + int revision; int rate_now; int capacity_now; int voltage_now; @@ -359,6 +360,7 @@ static struct acpi_offsets info_offsets[] = { }; static struct acpi_offsets extended_info_offsets[] = { + {offsetof(struct acpi_battery, revision), 0}, {offsetof(struct acpi_battery, power_unit), 0}, {offsetof(struct acpi_battery, design_capacity), 0}, {offsetof(struct acpi_battery, full_charge_capacity), 0}, diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 3a50a34fe176..5da44e81dd4d 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -164,4 +164,13 @@ struct platform_device; int acpi_create_platform_device(struct acpi_device *adev, const struct acpi_device_id *id); +/*-------------------------------------------------------------------------- + Video + -------------------------------------------------------------------------- */ +#if defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) +bool acpi_video_backlight_quirks(void); +#else +static inline bool acpi_video_backlight_quirks(void) { return false; } +#endif + #endif /* _ACPI_INTERNAL_H_ */ diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index e441876f5d5b..0ec434d2586d 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -44,6 +44,8 @@ #include <linux/suspend.h> #include <acpi/video.h> +#include "internal.h" + #define PREFIX "ACPI: " #define ACPI_VIDEO_BUS_NAME "Video Bus" @@ -906,6 +908,9 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) device->cap._DDC = 1; } + if (acpi_video_init_brightness(device)) + return; + if (acpi_video_backlight_support()) { struct backlight_properties props; struct pci_dev *pdev; @@ -915,9 +920,6 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) static int count = 0; char *name; - result = acpi_video_init_brightness(device); - if (result) - return; name = kasprintf(GFP_KERNEL, "acpi_video%d", count); if (!name) return; @@ -977,6 +979,11 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) if (result) printk(KERN_ERR PREFIX "Create sysfs link\n"); + } else { + /* Remove the brightness object. */ + kfree(device->brightness->levels); + kfree(device->brightness); + device->brightness = NULL; } } @@ -1540,14 +1547,20 @@ static int acpi_video_bus_put_devices(struct acpi_video_bus *video) /* acpi_video interface */ +/* + * Win8 requires setting bit2 of _DOS to let firmware know it shouldn't + * preform any automatic brightness change on receiving a notification. + */ static int acpi_video_bus_start_devices(struct acpi_video_bus *video) { - return acpi_video_bus_DOS(video, 0, 0); + return acpi_video_bus_DOS(video, 0, + acpi_video_backlight_quirks() ? 1 : 0); } static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) { - return acpi_video_bus_DOS(video, 0, 1); + return acpi_video_bus_DOS(video, 0, + acpi_video_backlight_quirks() ? 0 : 1); } static void acpi_video_bus_notify(struct acpi_device *device, u32 event) diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index e6bd910bc6ed..c3397748ba46 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -38,6 +38,8 @@ #include <linux/dmi.h> #include <linux/pci.h> +#include "internal.h" + #define PREFIX "ACPI: " ACPI_MODULE_NAME("video"); @@ -234,6 +236,12 @@ static void acpi_video_caps_check(void) acpi_video_get_capabilities(NULL); } +bool acpi_video_backlight_quirks(void) +{ + return acpi_gbl_osi_data >= ACPI_OSI_WIN_8; +} +EXPORT_SYMBOL(acpi_video_backlight_quirks); + /* Promote the vendor interface instead of the generic video module. * This function allow DMI blacklists to be implemented by externals * platform drivers instead of putting a big blacklist in video_detect.c |