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drm/amdgpu/display: add support for multiple backlights

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On platforms that support multiple backlights, register
each one separately.  This lets us manage them independently
rather than registering a single backlight and applying the
same settings to both.

v2: fix typo:
Reported-by: kernel test robot <lkp@intel.com>

Reviewed-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2021-07-08 16:31:10 -04:00
parent 50dea4ec1a
commit 7fd13baeb7
3 changed files with 84 additions and 71 deletions
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4
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
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@@ -365,13 +365,13 @@ struct amdgpu_display_manager {
spinlock_t irq_handler_list_table_lock;
struct backlight_device *backlight_dev;
struct backlight_device *backlight_dev[AMDGPU_DM_MAX_NUM_EDP];
const struct dc_link *backlight_link[AMDGPU_DM_MAX_NUM_EDP];
uint8_t num_of_edps;
struct amdgpu_dm_backlight_caps backlight_caps;
struct amdgpu_dm_backlight_caps backlight_caps[AMDGPU_DM_MAX_NUM_EDP];
struct mod_freesync *freesync_module;
#ifdef CONFIG_DRM_AMD_DC_HDCP