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2600bfa3df
linux/drivers/acpi
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Hans de Goede 2600bfa3df ACPI: video: Add acpi_video_backlight_use_native() helper 
ATM on x86 laptops where we want userspace to use the acpi_video backlight
device we often register both the GPU's native backlight device and
acpi_video's firmware acpi_video# backlight device. This relies on
userspace preferring firmware type backlight devices over native ones, but
registering 2 backlight devices for a single display really is undesirable.

On x86 laptops where the native GPU backlight device should be used,
the registering of other backlight devices is avoided by their drivers
using acpi_video_get_backlight_type() and only registering their backlight
if the return value matches their type.

acpi_video_get_backlight_type() uses
backlight_device_get_by_type(BACKLIGHT_RAW) to determine if a native
driver is available and will never return native if this returns
false. This means that the GPU's native backlight registering code
cannot just call acpi_video_get_backlight_type() to determine if it
should register its backlight, since acpi_video_get_backlight_type() will
never return native until the native backlight has already registered.

To fix this add a new internal native function parameter to
acpi_video_get_backlight_type(), which when set to true will make
acpi_video_get_backlight_type() behave as if a native backlight has
already been registered.

And add a new acpi_video_backlight_use_native() helper, which sets this
to true, for use in native GPU backlight code.

Changes in v2:
- Replace adding a native parameter to acpi_video_get_backlight_type() with
  adding a new acpi_video_backlight_use_native() helper.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2022-08-17 12:30:05 +02:00
..
acpica Revert "ACPICA: executer/exsystem: Warn about sleeps greater than 10 ms" 2022-05-21 18:02:26 +02:00
apei ACPI: APEI: Fix _EINJ vs EFI_MEMORY_SP 2022-06-29 20:24:19 +02:00
arm64 ACPI/IORT: Fix build error implicit-function-declaration 2022-07-29 10:20:49 +02:00
dptf ACPI: DPTF: Support Meteor Lake 2022-05-25 15:37:07 +02:00
nfit cxl for 5.19 2022-05-27 21:24:19 -07:00
numa cxl for 5.17 2022-01-12 15:57:59 -08:00
pmic ACPI: PMIC: xpower: Fix _TMP ACPI errors 2021-12-08 15:34:57 +01:00
x86 ACPI: PM: x86: Print messages regarding LPS0 idle support 2022-07-26 20:53:00 +02:00
ac.c ACPI: clean up white space in a few places for consistency 2022-05-12 16:54:49 +02:00
acpi_adxl.c
acpi_amba.c ACPI: AMBA: Fix resource name in /proc/iomem 2021-06-30 20:01:10 +02:00
acpi_apd.c i2c: designware: Add AMD PSP I2C bus support 2022-02-11 15:38:23 +01:00
acpi_cmos_rtc.c ACPI: cmos_rtc: Using pr_fmt() and remove PREFIX 2021-06-07 15:36:45 +02:00
acpi_configfs.c ACPI: configfs: Make get_header() to return error pointer 2021-07-16 19:20:28 +02:00
acpi_dbg.c ACPI: debug: Remove the not used function 2020-11-17 18:12:34 +01:00
acpi_extlog.c ACPI / extlog: Check for RDMSR failure 2020-10-02 19:01:55 +02:00
acpi_fpdt.c ACPI: tables: FPDT: Do not print FW_BUG message if record types are reserved 2021-08-25 20:01:07 +02:00
acpi_ipmi.c ACPI: IPMI: replace usage of found with dedicated list iterator variable 2022-03-25 18:01:40 +01:00
acpi_lpat.c
acpi_lpit.c Revert "ACPI / PM: LPIT: Register sysfs attributes based on FADT" 2022-07-15 20:04:07 +02:00
acpi_lpss.c ACPI: LPSS: Fix missing check in register_device_clock() 2022-06-29 20:18:22 +02:00
acpi_memhotplug.c ACPI: memhotplug: use a single static memory group for a single memory device 2021-09-08 11:50:23 -07:00
acpi_pad.c ACPI: Add perf low power callback 2022-04-05 10:24:38 +02:00
acpi_pcc.c ACPI: PCC: pcc_ctx can be static 2022-01-12 19:40:31 +01:00
acpi_platform.c ACPI: platform: Constify properties parameter in acpi_create_platform_device() 2022-03-01 20:36:34 +01:00
acpi_pnp.c ACPI: PNP: remove duplicated BRI0A49 and BDP3336 entries 2021-09-24 18:12:15 +02:00
acpi_processor.c ACPI: processor: Replace deprecated CPU-hotplug functions 2021-08-04 20:25:54 +02:00
acpi_tad.c ACPI: Use DEVICE_ATTR_<RW|RO|WO> macros 2021-01-22 16:17:19 +01:00
acpi_video.c Merge branch 'acpi-bus' 2022-07-29 19:58:52 +02:00
acpi_watchdog.c ACPI: watchdog: Replace open coded variant of resource_union() 2020-11-17 18:06:29 +01:00
battery.c ACPI: battery: Make "not-charging" the default on no charging or full info 2022-05-06 20:37:51 +02:00
bgrt.c ACPI: BGRT: use static for BGRT_SHOW kobj_attribute defines 2022-04-22 16:55:33 +02:00
blacklist.c ACPI: blacklist: Unify the message printing 2021-06-07 15:36:45 +02:00
bus.c ACPI updates for 5.20-rc1 2022-08-02 11:12:25 -07:00
button.c ACPI: button: Add DMI quirk for Lenovo Yoga 9 (14INTL5) 2021-08-25 19:57:01 +02:00
container.c ACPI: container: Use acpi_dev_for_each_child() 2022-06-20 20:33:05 +02:00
cppc_acpi.c ACPI: CPPC: Do not prevent CPPC from working in the future 2022-07-26 20:56:49 +02:00
custom_method.c ACPI: custom_method: fix a possible memory leak 2021-04-28 19:17:54 +02:00
debugfs.c
device_pm.c ACPI / MMC: PM: Unify fixing up device power 2022-06-23 20:53:55 +02:00
device_sysfs.c ACPI: bus: Drop driver member of struct acpi_device 2022-06-30 14:11:21 +02:00
dock.c ACPI: Use acpi_fetch_acpi_dev() instead of acpi_bus_get_device() 2021-12-17 18:45:51 +01:00
ec_sys.c ACPI: EC: Mark the ec_sys write_support param as module_param_hw() 2021-12-01 20:19:30 +01:00
ec.c ACPI: EC: Drop unused ident initializers from dmi_system_id tables 2022-06-29 19:40:46 +02:00
event.c Merge branches 'acpi-ec', 'acpi-apei', 'acpi-soc' and 'acpi-misc' 2021-06-29 15:51:25 +02:00
evged.c ACPI: GED: fix -Wformat 2020-11-09 19:25:20 +01:00
fan_attr.c ACPI: fan: Add additional attributes for fine grain control 2022-02-25 20:49:30 +01:00
fan_core.c ACPI: fan: Add additional attributes for fine grain control 2022-02-25 20:49:30 +01:00
fan.h ACPI: DPTF: Support Meteor Lake 2022-05-25 15:37:07 +02:00
glue.c ACPI: glue: Introduce acpi_find_child_by_adr() 2022-06-20 20:28:48 +02:00
hed.c ACPI: HED: Drop unused ACPI_MODULE_NAME() definition 2021-03-08 16:51:48 +01:00
internal.h ACPI: scan: Use ida_alloc() instead of ida_simple_get() 2022-02-18 20:16:34 +01:00
ioapic.c
irq.c ACPI: irq: Allow acpi_gsi_to_irq() to have an arch-specific fallback 2022-07-20 12:05:17 +01:00
Kconfig EFI updates for v5.20 2022-08-03 14:38:02 -07:00
Makefile ACPI: processor: Split out thermal initialization from ACPI PSS 2022-06-29 18:51:22 +02:00
nvs.c Merge branches 'acpi-ec', 'acpi-apei', 'acpi-soc' and 'acpi-misc' 2021-06-29 15:51:25 +02:00
osi.c
osl.c ACPI: OSL: Remove the helper for deactivating memory region 2022-04-27 20:44:55 +02:00
pci_irq.c ACPI: PCI: IRQ: Consolidate printing diagnostic messages 2021-03-08 16:51:08 +01:00
pci_link.c ACPI/PCI: Remove useless NULL pointer checks 2022-07-27 21:21:27 +02:00
pci_mcfg.c PCI: loongson: Add ACPI init support 2022-07-14 15:25:36 -05:00
pci_root.c cxl for 5.19 2022-05-27 21:24:19 -07:00
pci_slot.c
pfr_telemetry.c ACPI: pfr_telemetry: Fix info leak in pfrt_log_ioctl() 2022-01-10 16:36:45 +01:00
pfr_update.c ACPI: pfr_update: Fix return value check in pfru_write() 2022-01-06 18:53:31 +01:00
platform_profile.c ACPI: platform-profile: call sysfs_notify() from platform_profile_store() 2021-08-16 18:32:02 +02:00
power.c Merge branches 'acpi-scan', 'acpi-pm', 'acpi-power' and 'acpi-pci' 2022-01-10 16:48:27 +01:00
pptt.c ACPI: PPTT: Leave the table mapped for the runtime usage 2022-07-22 10:04:43 +02:00
prmt.c ACPI: PRM: Change handler_addr type to void pointer 2022-06-30 17:35:45 +02:00
proc.c proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
processor_core.c ACPI: processor: Remove dead ACPICA debug code 2020-09-25 18:25:51 +02:00
processor_driver.c ACPI: processor: Split out thermal initialization from ACPI PSS 2022-06-29 18:51:22 +02:00
processor_idle.c RCU pull request for v5.20 (or whatever) 2022-08-02 19:12:45 -07:00
processor_pdc.c ACPI: processor: Get rid of ACPICA message printing 2021-03-08 16:51:19 +01:00
processor_perflib.c ACPI: processor_perflib: Cleanup print messages 2021-06-07 15:36:46 +02:00
processor_thermal.c ACPI: processor: Split out thermal initialization from ACPI PSS 2022-06-29 18:51:22 +02:00
processor_throttling.c Merge branches 'acpi-dptf' and 'acpi-messages' 2021-06-29 15:50:37 +02:00
property.c Merge branch 'acpi-properties' 2022-08-11 19:21:03 +02:00
reboot.c ACPI: reboot: Unify the message printing 2021-06-07 15:36:46 +02:00
resource.c ACPI: resource: skip IRQ override on AMD Zen platforms 2022-07-21 17:11:36 +02:00
sbs.c ACPI: sbs: Unify the message printing 2021-06-07 15:36:46 +02:00
sbshc.c Merge branches 'acpi-ec', 'acpi-apei', 'acpi-soc' and 'acpi-misc' 2021-06-29 15:51:25 +02:00
sbshc.h ACPI: Fix whitespace inconsistencies 2020-11-09 19:08:06 +01:00
scan.c sound updates for 6.0-rc1 2022-08-06 10:19:51 -07:00
sleep.c ACPI: PM: x86: Print messages regarding LPS0 idle support 2022-07-26 20:53:00 +02:00
sleep.h Revert "Revert "ACPI: scan: Turn off unused power resources during initialization"" 2021-05-10 14:02:17 +02:00
spcr.c ACPI: SPCR: Add support for NVIDIA 16550-compatible port subtype 2022-04-13 20:37:29 +02:00
sysfs.c ACPI: sysfs: Fix BERT error region memory mapping 2022-04-13 19:58:14 +02:00
tables.c ACPI: tables: Make LAPIC_ADDR_OVR address readable in message 2022-03-25 18:11:42 +01:00
thermal.c Merge branches 'acpi-tables', 'acpi-numa', 'acpi-sysfs', 'acpi-cppc', 'acpi-thermal' and 'acpi-battery' 2022-01-10 17:22:15 +01:00
tiny-power-button.c ACPI: tiny-power-button: Simplify the code using module_acpi_driver() 2020-11-17 18:12:34 +01:00
utils.c ACPI: utils: Add api to read _SUB from ACPI 2022-07-15 12:35:09 +01:00
video_detect.c ACPI: video: Add acpi_video_backlight_use_native() helper 2022-08-17 12:30:05 +02:00
viot.c ACPI: VIOT: Do not dereference fwnode in struct device 2022-08-08 19:29:34 +02:00
wakeup.c ACPI: Fix whitespace inconsistencies 2020-11-09 19:08:06 +01:00