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ACPI fixes for 6.2-rc4

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- Improve ACPI companion lookup for backlight devices in the cases when
    there is more than one candidate ACPI device object (Hans de Goede).
 
  - Add missing support for manual selection of NVidia-WMI-EC or Apple
    GMUX backlight in the kernel command line to the ACPI backlight
    driver (Hans de Goede).
 
  - Skip ACPI  IRQ override on Asus Expertbook B2402CBA (Tamim Khan).
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Merge tag 'acpi-6.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These add one more ACPI IRQ override quirk, improve ACPI companion
  lookup for backlight devices and add missing kernel command line
  option values for backlight detection.

  Specifics:

   - Improve ACPI companion lookup for backlight devices in the cases
     when there is more than one candidate ACPI device object (Hans de
     Goede)

   - Add missing support for manual selection of NVidia-WMI-EC or Apple
     GMUX backlight in the kernel command line to the ACPI backlight
     driver (Hans de Goede)

   - Skip ACPI IRQ override on Asus Expertbook B2402CBA (Tamim Khan)"

* tag 'acpi-6.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: Fix selecting wrong ACPI fwnode for the iGPU on some Dell laptops
  ACPI: video: Allow selecting NVidia-WMI-EC or Apple GMUX backlight from the cmdline
  ACPI: resource: Skip IRQ override on Asus Expertbook B2402CBA
This commit is contained in:
Linus Torvalds 2023-01-13 07:32:55 -06:00
commit cdbbca256c
5 changed files with 30 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/acpi/glue.c
View File

@ -75,7 +75,8 @@ static struct acpi_bus_type *acpi_get_bus_type(struct device *dev)
}
#define FIND_CHILD_MIN_SCORE 1
#define FIND_CHILD_MAX_SCORE 2
#define FIND_CHILD_MID_SCORE 2
#define FIND_CHILD_MAX_SCORE 3
static int match_any(struct acpi_device *adev, void *not_used)
{
@ -96,8 +97,17 @@ static int find_child_checks(struct acpi_device *adev, bool check_children)
return -ENODEV;
status = acpi_evaluate_integer(adev->handle, "_STA", NULL, &sta);
if (status == AE_NOT_FOUND)
if (status == AE_NOT_FOUND) {
/*
* Special case: backlight device objects without _STA are
* preferred to other objects with the same _ADR value, because
* it is more likely that they are actually useful.
*/
if (adev->pnp.type.backlight)
return FIND_CHILD_MID_SCORE;
return FIND_CHILD_MIN_SCORE;
}
if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_ENABLED))
return -ENODEV;

7
drivers/acpi/resource.c
View File

@ -432,6 +432,13 @@ static const struct dmi_system_id asus_laptop[] = {
DMI_MATCH(DMI_BOARD_NAME, "S5602ZA"),
},
},
{
.ident = "Asus ExpertBook B2402CBA",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
DMI_MATCH(DMI_BOARD_NAME, "B2402CBA"),
},
},
{
.ident = "Asus ExpertBook B2502",
.matches = {

7
drivers/acpi/scan.c
View File

@ -1370,9 +1370,12 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
* Some devices don't reliably have _HIDs & _CIDs, so add
* synthetic HIDs to make sure drivers can find them.
*/
if (acpi_is_video_device(handle))
if (acpi_is_video_device(handle)) {
acpi_add_id(pnp, ACPI_VIDEO_HID);
else if (acpi_bay_match(handle))
pnp->type.backlight = 1;
break;
}
if (acpi_bay_match(handle))
acpi_add_id(pnp, ACPI_BAY_HID);
else if (acpi_dock_match(handle))
acpi_add_id(pnp, ACPI_DOCK_HID);

4
drivers/acpi/video_detect.c
View File

@ -50,6 +50,10 @@ static void acpi_video_parse_cmdline(void)
acpi_backlight_cmdline = acpi_backlight_video;
if (!strcmp("native", acpi_video_backlight_string))
acpi_backlight_cmdline = acpi_backlight_native;
if (!strcmp("nvidia_wmi_ec", acpi_video_backlight_string))
acpi_backlight_cmdline = acpi_backlight_nvidia_wmi_ec;
if (!strcmp("apple_gmux", acpi_video_backlight_string))
acpi_backlight_cmdline = acpi_backlight_apple_gmux;
if (!strcmp("none", acpi_video_backlight_string))
acpi_backlight_cmdline = acpi_backlight_none;
}

3
include/acpi/acpi_bus.h
View File

@ -230,7 +230,8 @@ struct acpi_pnp_type {
u32 hardware_id:1;
u32 bus_address:1;
u32 platform_id:1;
u32 reserved:29;
u32 backlight:1;
u32 reserved:28;
};
struct acpi_device_pnp {