diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_acpi.c | 27 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_acpi.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display.c | 2 |
3 files changed, 31 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_acpi.c b/drivers/gpu/drm/i915/display/intel_acpi.c index e78430001f07..9df78e7caa2b 100644 --- a/drivers/gpu/drm/i915/display/intel_acpi.c +++ b/drivers/gpu/drm/i915/display/intel_acpi.c @@ -7,6 +7,7 @@ #include <linux/pci.h> #include <linux/acpi.h> +#include <acpi/video.h> #include "i915_drv.h" #include "intel_acpi.h" @@ -331,3 +332,29 @@ void intel_acpi_assign_connector_fwnodes(struct drm_i915_private *i915) */ fwnode_handle_put(fwnode); } + +void intel_acpi_video_register(struct drm_i915_private *i915) +{ + struct drm_connector_list_iter conn_iter; + struct drm_connector *connector; + + acpi_video_register(); + + /* + * If i915 is driving an internal panel without registering its native + * backlight handler try to register the acpi_video backlight. + * For panels not driven by i915 another GPU driver may still register + * a native backlight later and acpi_video_register_backlight() should + * only be called after any native backlights have been registered. + */ + drm_connector_list_iter_begin(&i915->drm, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { + struct intel_panel *panel = &to_intel_connector(connector)->panel; + + if (panel->backlight.funcs && !panel->backlight.device) { + acpi_video_register_backlight(); + break; + } + } + drm_connector_list_iter_end(&conn_iter); +} diff --git a/drivers/gpu/drm/i915/display/intel_acpi.h b/drivers/gpu/drm/i915/display/intel_acpi.h index 4a760a2baed9..6a0007452f95 100644 --- a/drivers/gpu/drm/i915/display/intel_acpi.h +++ b/drivers/gpu/drm/i915/display/intel_acpi.h @@ -14,6 +14,7 @@ void intel_unregister_dsm_handler(void); void intel_dsm_get_bios_data_funcs_supported(struct drm_i915_private *i915); void intel_acpi_device_id_update(struct drm_i915_private *i915); void intel_acpi_assign_connector_fwnodes(struct drm_i915_private *i915); +void intel_acpi_video_register(struct drm_i915_private *i915); #else static inline void intel_register_dsm_handler(void) { return; } static inline void intel_unregister_dsm_handler(void) { return; } @@ -23,6 +24,8 @@ static inline void intel_acpi_device_id_update(struct drm_i915_private *i915) { return; } static inline void intel_acpi_assign_connector_fwnodes(struct drm_i915_private *i915) { return; } +static inline +void intel_acpi_video_register(struct drm_i915_private *i915) { return; } #endif /* CONFIG_ACPI */ #endif /* __INTEL_ACPI_H__ */ diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index fc5d94862ef3..6a1c15e6ce7f 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -9084,7 +9084,7 @@ void intel_display_driver_register(struct drm_i915_private *i915) /* Must be done after probing outputs */ intel_opregion_register(i915); - acpi_video_register(); + intel_acpi_video_register(i915); intel_audio_init(i915); |