drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
When the laptop is plugged into AC or DC power supply,
the brightness obtained ACPI may be smaller than current
brightness.As a result the screen becomes dark，this is
not what people want.
Signed-off-by: Yuanzhi Wang <wangyuanzhi@uniontech.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index d4196fcb85a0..93f1567028c5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -406,6 +406,7 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev,
{
struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif;
int count;
+ int old_brightness;
DRM_DEBUG_DRIVER("event, device_class = %s, type = %#x\n",
event->device_class, event->type);
@@ -443,7 +444,13 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev,
* hardwired to post BACKLIGHT_UPDATE_SYSFS.
* It probably should accept 'reason' parameter.
*/
- backlight_device_set_brightness(atif->bd, req.backlight_level);
+ old_brightness = backlight_get_brightness(atif->bd);
+ if (old_brightness > req.backlight_level)
+ DRM_WARN("old brightness %d is greater than ACPI brightness
+ %d\n", old_brightness, req.backlight_level);
+ else
+ backlight_device_set_brightness(atif->bd,
+ req.backlight_level);
}
}
--
2.20.1
On 2/27/23 01:39, Yuanzhi Wang wrote:
> When the laptop is plugged into AC or DC power supply,
> the brightness obtained ACPI may be smaller than current
> brightness.As a result the screen becomes dark，this is
> not what people want.
>
Do you have a matching bug report with more information included?
Some relevant details I think we need:
kernel version
laptop model
BIOS version
if it's the latest BIOS
some sample numbers that this new warning/behavior catches
acpidump
At least as described this sounds like a BIOS bug.
> Signed-off-by: Yuanzhi Wang <wangyuanzhi@uniontech.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
> index d4196fcb85a0..93f1567028c5 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
> @@ -406,6 +406,7 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev,
> {
> struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif;
> int count;
> + int old_brightness;
>
> DRM_DEBUG_DRIVER("event, device_class = %s, type = %#x\n",
> event->device_class, event->type);
> @@ -443,7 +444,13 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev,
> * hardwired to post BACKLIGHT_UPDATE_SYSFS.
> * It probably should accept 'reason' parameter.
> */
> - backlight_device_set_brightness(atif->bd, req.backlight_level);
> + old_brightness = backlight_get_brightness(atif->bd);
> + if (old_brightness > req.backlight_level)
> + DRM_WARN("old brightness %d is greater than ACPI brightness
> + %d\n", old_brightness, req.backlight_level);
> + else
> + backlight_device_set_brightness(atif->bd,
> + req.backlight_level);
> }
> }
>
Hello, I have fixed compilation errors. The lenovo ThinkBook 14 G3 ACL
notebook bios reports very small brightness value, 3 eg.
On 2023/2/27 22:20, Mario Limonciello wrote:
> On 2/27/23 01:39, Yuanzhi Wang wrote:
>> When the laptop is plugged into AC or DC power supply,
>> the brightness obtained ACPI may be smaller than current
>> brightness.As a result the screen becomes dark，this is
>> not what people want.
>>
>
> Do you have a matching bug report with more information included?
>
> Some relevant details I think we need:
> kernel version
> laptop model
> BIOS version
> if it's the latest BIOS
> some sample numbers that this new warning/behavior catches
> acpidump
>
> At least as described this sounds like a BIOS bug.
>
>> Signed-off-by: Yuanzhi Wang <wangyuanzhi@uniontech.com>
>> ---
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 9 ++++++++-
>> 1 file changed, 8 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
>> index d4196fcb85a0..93f1567028c5 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
>> @@ -406,6 +406,7 @@ static int amdgpu_atif_handler(struct
>> amdgpu_device *adev,
>> {
>> struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif;
>> int count;
>> + int old_brightness;
>> DRM_DEBUG_DRIVER("event, device_class = %s, type = %#x\n",
>> event->device_class, event->type);
>> @@ -443,7 +444,13 @@ static int amdgpu_atif_handler(struct
>> amdgpu_device *adev,
>> * hardwired to post BACKLIGHT_UPDATE_SYSFS.
>> * It probably should accept 'reason' parameter.
>> */
>> - backlight_device_set_brightness(atif->bd,
>> req.backlight_level);
>> + old_brightness = backlight_get_brightness(atif->bd);
>> + if (old_brightness > req.backlight_level)
>> + DRM_WARN("old brightness %d is greater than ACPI
>> brightness
>> + %d\n", old_brightness, req.backlight_level);
>> + else
>> + backlight_device_set_brightness(atif->bd,
>> + req.backlight_level);
>> }
>> }
>
>
Hi Yuanzhi,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on linus/master v6.2 next-20230227]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Yuanzhi-Wang/amdgpu-add-a-filter-condition-when-set-brightness/20230227-154108
base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link: https://lore.kernel.org/r/20230227073953.326-1-wangyuanzhi%40uniontech.com
patch subject: [PATCH] amdgpu: add a filter condition when set brightness
config: loongarch-randconfig-r036-20230226 (https://download.01.org/0day-ci/archive/20230227/202302272122.p3DfX4S8-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/95d9579e31d0b601aa1422cf767ca5138d3efcee
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Yuanzhi-Wang/amdgpu-add-a-filter-condition-when-set-brightness/20230227-154108
git checkout 95d9579e31d0b601aa1422cf767ca5138d3efcee
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash drivers/gpu/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302272122.p3DfX4S8-lkp@intel.com/
All errors (new ones prefixed by >>):
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c: In function 'amdgpu_atif_handler':
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:50: warning: missing terminating " character
449 | DRM_WARN("old brightness %d is greater than ACPI brightness
| ^
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:450:53: warning: missing terminating " character
450 | %d\n", old_brightness, req.backlight_level);
| ^
>> cc1: error: unterminated argument list invoking macro "DRM_WARN"
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:41: error: 'DRM_WARN' undeclared (first use in this function)
449 | DRM_WARN("old brightness %d is greater than ACPI brightness
| ^~~~~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:41: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:49: error: expected ';' at end of input
449 | DRM_WARN("old brightness %d is greater than ACPI brightness
| ^
| ;
......
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:448:33: note: '-Wmisleading-indentation' is disabled from this point onwards, since column-tracking was disabled due to the size of the code/headers
448 | if (old_brightness > req.backlight_level)
| ^~
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:448:33: note: adding '-flarge-source-files' will allow for more column-tracking support, at the expense of compilation time and memory
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:41: error: expected declaration or statement at end of input
449 | DRM_WARN("old brightness %d is greater than ACPI brightness
| ^~~~~~~~
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:41: error: expected declaration or statement at end of input
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:41: error: expected declaration or statement at end of input
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:41: error: expected declaration or statement at end of input
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c: At top level:
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:404:12: warning: 'amdgpu_atif_handler' defined but not used [-Wunused-function]
404 | static int amdgpu_atif_handler(struct amdgpu_device *adev,
| ^~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:308:12: warning: 'amdgpu_atif_query_backlight_caps' defined but not used [-Wunused-function]
308 | static int amdgpu_atif_query_backlight_caps(struct amdgpu_atif *atif)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:240:12: warning: 'amdgpu_atif_get_notification_params' defined but not used [-Wunused-function]
240 | static int amdgpu_atif_get_notification_params(struct amdgpu_atif *atif)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:195:12: warning: 'amdgpu_atif_verify_interface' defined but not used [-Wunused-function]
195 | static int amdgpu_atif_verify_interface(struct amdgpu_atif *atif)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dc_types.h:36,
from drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services_types.h:30,
from drivers/gpu/drm/amd/amdgpu/../include/dm_pp_interface.h:26,
from drivers/gpu/drm/amd/amdgpu/amdgpu.h:64,
from drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:35:
drivers/gpu/drm/amd/amdgpu/../display/dc/dc_hdmi_types.h:53:22: warning: 'dp_hdmi_dongle_signature_str' defined but not used [-Wunused-const-variable=]
53 | static const uint8_t dp_hdmi_dongle_signature_str[] = "DP-HDMI ADAPTOR";
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
Hi Yuanzhi,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on linus/master v6.2 next-20230227]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Yuanzhi-Wang/amdgpu-add-a-filter-condition-when-set-brightness/20230227-154108
base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link: https://lore.kernel.org/r/20230227073953.326-1-wangyuanzhi%40uniontech.com
patch subject: [PATCH] amdgpu: add a filter condition when set brightness
config: arm64-randconfig-r012-20230226 (https://download.01.org/0day-ci/archive/20230227/202302272051.KDJqRyl5-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db89896bbbd2251fff457699635acbbedeead27f)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://github.com/intel-lab-lkp/linux/commit/95d9579e31d0b601aa1422cf767ca5138d3efcee
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Yuanzhi-Wang/amdgpu-add-a-filter-condition-when-set-brightness/20230227-154108
git checkout 95d9579e31d0b601aa1422cf767ca5138d3efcee
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/gpu/drm/amd/amdgpu/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302272051.KDJqRyl5-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:15: warning: missing terminating '"' character [-Winvalid-pp-token]
DRM_WARN("old brightness %d is greater than ACPI brightness
^
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:450:11: warning: missing terminating '"' character [-Winvalid-pp-token]
%d\n", old_brightness, req.backlight_level);
^
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:6: error: unterminated function-like macro invocation
DRM_WARN("old brightness %d is greater than ACPI brightness
^
include/drm/drm_print.h:543:9: note: macro 'DRM_WARN' defined here
#define DRM_WARN(fmt, ...) \
^
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:1105:28: error: expected expression
#endif /* CONFIG_SUSPEND */
^
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:1105:28: warning: misleading indentation; statement is not part of the previous 'if' [-Wmisleading-indentation]
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:448:5: note: previous statement is here
if (old_brightness > req.backlight_level)
^
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:1105:28: error: expected '}'
#endif /* CONFIG_SUSPEND */
^
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:439:18: note: to match this '{'
if (atif->bd) {
^
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:1105:28: error: expected '}'
#endif /* CONFIG_SUSPEND */
^
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:438:59: note: to match this '{'
if (req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) {
^
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:1105:28: error: expected '}'
#endif /* CONFIG_SUSPEND */
^
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:427:38: note: to match this '{'
if (atif->functions.sbios_requests) {
^
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:1105:28: error: expected '}'
#endif /* CONFIG_SUSPEND */
^
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:406:1: note: to match this '{'
{
^
3 warnings and 6 errors generated.
vim +449 drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
391
392 /**
393 * amdgpu_atif_handler - handle ATIF notify requests
394 *
395 * @adev: amdgpu_device pointer
396 * @event: atif sbios request struct
397 *
398 * Checks the acpi event and if it matches an atif event,
399 * handles it.
400 *
401 * Returns:
402 * NOTIFY_BAD or NOTIFY_DONE, depending on the event.
403 */
404 static int amdgpu_atif_handler(struct amdgpu_device *adev,
405 struct acpi_bus_event *event)
406 {
407 struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif;
408 int count;
409 int old_brightness;
410
411 DRM_DEBUG_DRIVER("event, device_class = %s, type = %#x\n",
412 event->device_class, event->type);
413
414 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
415 return NOTIFY_DONE;
416
417 /* Is this actually our event? */
418 if (!atif->notification_cfg.enabled ||
419 event->type != atif->notification_cfg.command_code) {
420 /* These events will generate keypresses otherwise */
421 if (event->type == ACPI_VIDEO_NOTIFY_PROBE)
422 return NOTIFY_BAD;
423 else
424 return NOTIFY_DONE;
425 }
426
427 if (atif->functions.sbios_requests) {
428 struct atif_sbios_requests req;
429
430 /* Check pending SBIOS requests */
431 count = amdgpu_atif_get_sbios_requests(atif, &req);
432
433 if (count <= 0)
434 return NOTIFY_BAD;
435
436 DRM_DEBUG_DRIVER("ATIF: %d pending SBIOS requests\n", count);
437
438 if (req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) {
439 if (atif->bd) {
440 DRM_DEBUG_DRIVER("Changing brightness to %d\n",
441 req.backlight_level);
442 /*
443 * XXX backlight_device_set_brightness() is
444 * hardwired to post BACKLIGHT_UPDATE_SYSFS.
445 * It probably should accept 'reason' parameter.
446 */
447 old_brightness = backlight_get_brightness(atif->bd);
448 if (old_brightness > req.backlight_level)
> 449 DRM_WARN("old brightness %d is greater than ACPI brightness
450 %d\n", old_brightness, req.backlight_level);
451 else
452 backlight_device_set_brightness(atif->bd,
453 req.backlight_level);
454 }
455 }
456
457 if (req.pending & ATIF_DGPU_DISPLAY_EVENT) {
458 if (adev->flags & AMD_IS_PX) {
459 pm_runtime_get_sync(adev_to_drm(adev)->dev);
460 /* Just fire off a uevent and let userspace tell us what to do */
461 drm_helper_hpd_irq_event(adev_to_drm(adev));
462 pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
463 pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
464 }
465 }
466 /* TODO: check other events */
467 }
468
469 /* We've handled the event, stop the notifier chain. The ACPI interface
470 * overloads ACPI_VIDEO_NOTIFY_PROBE, we don't want to send that to
471 * userspace if the event was generated only to signal a SBIOS
472 * request.
473 */
474 return NOTIFY_BAD;
475 }
476
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
Hi Yuanzhi,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on drm-misc/drm-misc-next]
[also build test WARNING on linus/master v6.2 next-20230227]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Yuanzhi-Wang/amdgpu-add-a-filter-condition-when-set-brightness/20230227-154108
base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link: https://lore.kernel.org/r/20230227073953.326-1-wangyuanzhi%40uniontech.com
patch subject: [PATCH] amdgpu: add a filter condition when set brightness
config: loongarch-randconfig-r036-20230226 (https://download.01.org/0day-ci/archive/20230227/202302271822.ZZYRdzTn-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/95d9579e31d0b601aa1422cf767ca5138d3efcee
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Yuanzhi-Wang/amdgpu-add-a-filter-condition-when-set-brightness/20230227-154108
git checkout 95d9579e31d0b601aa1422cf767ca5138d3efcee
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash drivers/gpu/drm/amd/amdgpu/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302271822.ZZYRdzTn-lkp@intel.com/
All warnings (new ones prefixed by >>):
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c: In function 'amdgpu_atif_handler':
>> drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:50: warning: missing terminating " character
449 | DRM_WARN("old brightness %d is greater than ACPI brightness
| ^
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:450:53: warning: missing terminating " character
450 | %d\n", old_brightness, req.backlight_level);
| ^
cc1: error: unterminated argument list invoking macro "DRM_WARN"
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:41: error: 'DRM_WARN' undeclared (first use in this function)
449 | DRM_WARN("old brightness %d is greater than ACPI brightness
| ^~~~~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:41: note: each undeclared identifier is reported only once for each function it appears in
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:49: error: expected ';' at end of input
449 | DRM_WARN("old brightness %d is greater than ACPI brightness
| ^
| ;
......
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:448:33: note: '-Wmisleading-indentation' is disabled from this point onwards, since column-tracking was disabled due to the size of the code/headers
448 | if (old_brightness > req.backlight_level)
| ^~
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:448:33: note: adding '-flarge-source-files' will allow for more column-tracking support, at the expense of compilation time and memory
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:41: error: expected declaration or statement at end of input
449 | DRM_WARN("old brightness %d is greater than ACPI brightness
| ^~~~~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:41: error: expected declaration or statement at end of input
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:41: error: expected declaration or statement at end of input
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:449:41: error: expected declaration or statement at end of input
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c: At top level:
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:404:12: warning: 'amdgpu_atif_handler' defined but not used [-Wunused-function]
404 | static int amdgpu_atif_handler(struct amdgpu_device *adev,
| ^~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:308:12: warning: 'amdgpu_atif_query_backlight_caps' defined but not used [-Wunused-function]
308 | static int amdgpu_atif_query_backlight_caps(struct amdgpu_atif *atif)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:240:12: warning: 'amdgpu_atif_get_notification_params' defined but not used [-Wunused-function]
240 | static int amdgpu_atif_get_notification_params(struct amdgpu_atif *atif)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:195:12: warning: 'amdgpu_atif_verify_interface' defined but not used [-Wunused-function]
195 | static int amdgpu_atif_verify_interface(struct amdgpu_atif *atif)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dc_types.h:36,
from drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services_types.h:30,
from drivers/gpu/drm/amd/amdgpu/../include/dm_pp_interface.h:26,
from drivers/gpu/drm/amd/amdgpu/amdgpu.h:64,
from drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:35:
drivers/gpu/drm/amd/amdgpu/../display/dc/dc_hdmi_types.h:53:22: warning: 'dp_hdmi_dongle_signature_str' defined but not used [-Wunused-const-variable=]
53 | static const uint8_t dp_hdmi_dongle_signature_str[] = "DP-HDMI ADAPTOR";
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +449 drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
391
392 /**
393 * amdgpu_atif_handler - handle ATIF notify requests
394 *
395 * @adev: amdgpu_device pointer
396 * @event: atif sbios request struct
397 *
398 * Checks the acpi event and if it matches an atif event,
399 * handles it.
400 *
401 * Returns:
402 * NOTIFY_BAD or NOTIFY_DONE, depending on the event.
403 */
404 static int amdgpu_atif_handler(struct amdgpu_device *adev,
405 struct acpi_bus_event *event)
406 {
407 struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif;
408 int count;
409 int old_brightness;
410
411 DRM_DEBUG_DRIVER("event, device_class = %s, type = %#x\n",
412 event->device_class, event->type);
413
414 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
415 return NOTIFY_DONE;
416
417 /* Is this actually our event? */
418 if (!atif->notification_cfg.enabled ||
419 event->type != atif->notification_cfg.command_code) {
420 /* These events will generate keypresses otherwise */
421 if (event->type == ACPI_VIDEO_NOTIFY_PROBE)
422 return NOTIFY_BAD;
423 else
424 return NOTIFY_DONE;
425 }
426
427 if (atif->functions.sbios_requests) {
428 struct atif_sbios_requests req;
429
430 /* Check pending SBIOS requests */
431 count = amdgpu_atif_get_sbios_requests(atif, &req);
432
433 if (count <= 0)
434 return NOTIFY_BAD;
435
436 DRM_DEBUG_DRIVER("ATIF: %d pending SBIOS requests\n", count);
437
438 if (req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) {
439 if (atif->bd) {
440 DRM_DEBUG_DRIVER("Changing brightness to %d\n",
441 req.backlight_level);
442 /*
443 * XXX backlight_device_set_brightness() is
444 * hardwired to post BACKLIGHT_UPDATE_SYSFS.
445 * It probably should accept 'reason' parameter.
446 */
447 old_brightness = backlight_get_brightness(atif->bd);
448 if (old_brightness > req.backlight_level)
> 449 DRM_WARN("old brightness %d is greater than ACPI brightness
450 %d\n", old_brightness, req.backlight_level);
451 else
452 backlight_device_set_brightness(atif->bd,
453 req.backlight_level);
454 }
455 }
456
457 if (req.pending & ATIF_DGPU_DISPLAY_EVENT) {
458 if (adev->flags & AMD_IS_PX) {
459 pm_runtime_get_sync(adev_to_drm(adev)->dev);
460 /* Just fire off a uevent and let userspace tell us what to do */
461 drm_helper_hpd_irq_event(adev_to_drm(adev));
462 pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
463 pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
464 }
465 }
466 /* TODO: check other events */
467 }
468
469 /* We've handled the event, stop the notifier chain. The ACPI interface
470 * overloads ACPI_VIDEO_NOTIFY_PROBE, we don't want to send that to
471 * userspace if the event was generated only to signal a SBIOS
472 * request.
473 */
474 return NOTIFY_BAD;
475 }
476
--
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