hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'acpi-video' 

* acpi-video:
  ACPI / video: Add Acer TravelMate B113 to native backlight blacklist
  ACPI / video: Add Dell Inspiron 5737 to the blacklist
  ACPI / i915: ignore firmware requests for backlight change
This commit is contained in:
Rafael J. Wysocki 2014-07-10 21:04:25 +02:00
parent 0b80a8ff07 ab7027de5c
commit ff253d3d40
4 changed files with 29 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/acpi/video.c
View File

@ -241,13 +241,14 @@ static bool acpi_video_use_native_backlight(void)
return use_native_backlight_dmi;
}
static bool acpi_video_verify_backlight_support(void)
bool acpi_video_verify_backlight_support(void)
{
if (acpi_osi_is_win8() && acpi_video_use_native_backlight() &&
backlight_device_registered(BACKLIGHT_RAW))
return false;
return acpi_video_backlight_support();
}
EXPORT_SYMBOL_GPL(acpi_video_verify_backlight_support);
/* backlight device sysfs support */
static int acpi_video_get_brightness(struct backlight_device *bd)
@ -562,6 +563,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire V5-471G"),
},
},
{
.callback = video_set_use_native_backlight,
.ident = "Acer TravelMate B113",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate B113"),
},
},
{
.callback = video_set_use_native_backlight,
.ident = "HP ProBook 4340s",

8
drivers/acpi/video_detect.c
View File

@ -166,6 +166,14 @@ static struct dmi_system_id video_detect_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"),
},
},
{
.callback = video_detect_force_vendor,
.ident = "Dell Inspiron 5737",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5737"),
},
},
{ },
};

9
drivers/gpu/drm/i915/intel_opregion.c
View File

@ -403,6 +403,15 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
/*
* If the acpi_video interface is not supposed to be used, don't
* bother processing backlight level change requests from firmware.
*/
if (!acpi_video_verify_backlight_support()) {
DRM_DEBUG_KMS("opregion backlight request ignored\n");
return 0;
}
if (!(bclp & ASLE_BCLP_VALID))
return ASLC_BACKLIGHT_FAILED;

2
include/acpi/video.h
View File

@ -22,6 +22,7 @@ extern void acpi_video_unregister(void);
extern void acpi_video_unregister_backlight(void);
extern int acpi_video_get_edid(struct acpi_device *device, int type,
int device_id, void **edid);
extern bool acpi_video_verify_backlight_support(void);
#else
static inline int acpi_video_register(void) { return 0; }
static inline void acpi_video_unregister(void) { return; }
@ -31,6 +32,7 @@ static inline int acpi_video_get_edid(struct acpi_device *device, int type,
{
return -ENODEV;
}
static inline bool acpi_video_verify_backlight_support(void) { return false; }
#endif
#endif