amdgpu_acpi: add backlight control for the DC case (bcb7b0ef) · Commits · 戴 / test

drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c

+21 −1

Original line number	Diff line number	Diff line
		@@ -444,7 +444,6 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev,

		DRM_DEBUG_DRIVER("ATIF: %d pending SBIOS requests\n", count);

		/* todo: add DC handling */
		if ((req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) &&
		!amdgpu_device_has_dc_support(adev)) {
		struct amdgpu_encoder *enc = atif->encoder_for_bl;
		@@ -463,6 +462,27 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev,
		#endif
		}
		}
		#if defined(CONFIG_DRM_AMD_DC)
		#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) \|\| defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
		if ((req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) &&
		amdgpu_device_has_dc_support(adev)) {
		struct amdgpu_display_manager *dm = &adev->dm;
		struct backlight_device *bd = dm->backlight_dev;

		if (bd) {
		DRM_DEBUG_DRIVER("Changing brightness to %d\n",
		req.backlight_level);

		/*
		* XXX backlight_device_set_brightness() is
		* hardwired to post BACKLIGHT_UPDATE_SYSFS.
		* It probably should accept 'reason' parameter.
		*/
		backlight_device_set_brightness(bd, req.backlight_level);
		}
		}
		#endif
		#endif
		if (req.pending & ATIF_DGPU_DISPLAY_EVENT) {
		if (adev->flags & AMD_IS_PX) {
		pm_runtime_get_sync(adev->ddev->dev);