And cache the value. These can be used by the backlight callbacks and modesetting functions.
v2: rebase on latest backlight changes. Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1337 Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 42 ++++++++++++++----- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 7 ++++ 2 files changed, 38 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 5df187a6e25f..167c8759fbc9 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -3467,26 +3467,28 @@ static u32 convert_brightness_to_user(const struct amdgpu_dm_backlight_caps *cap max - min); } -static int amdgpu_dm_backlight_update_status(struct backlight_device *bd) +static int amdgpu_dm_backlight_set_level(struct amdgpu_display_manager *dm, + u32 user_brightness) { - struct amdgpu_display_manager *dm = bl_get_data(bd); struct amdgpu_dm_backlight_caps caps; struct dc_link *link[AMDGPU_DM_MAX_NUM_EDP]; - u32 brightness; + u32 brightness[AMDGPU_DM_MAX_NUM_EDP]; bool rc; int i; amdgpu_dm_update_backlight_caps(dm); caps = dm->backlight_caps; - for (i = 0; i < dm->num_of_edps; i++) + for (i = 0; i < dm->num_of_edps; i++) { + dm->brightness[i] = user_brightness; + brightness[i] = convert_brightness_from_user(&caps, dm->brightness[i]); link[i] = (struct dc_link *)dm->backlight_link[i]; + } - brightness = convert_brightness_from_user(&caps, bd->props.brightness); - // Change brightness based on AUX property + /* Change brightness based on AUX property */ if (caps.aux_support) { for (i = 0; i < dm->num_of_edps; i++) { - rc = dc_link_set_backlight_level_nits(link[i], true, brightness, + rc = dc_link_set_backlight_level_nits(link[i], true, brightness[i], AUX_BL_DEFAULT_TRANSITION_TIME_MS); if (!rc) { DRM_ERROR("DM: Failed to update backlight via AUX on eDP[%d]\n", i); @@ -3495,7 +3497,7 @@ static int amdgpu_dm_backlight_update_status(struct backlight_device *bd) } } else { for (i = 0; i < dm->num_of_edps; i++) { - rc = dc_link_set_backlight_level(dm->backlight_link[i], brightness, 0); + rc = dc_link_set_backlight_level(dm->backlight_link[i], brightness[i], 0); if (!rc) { DRM_ERROR("DM: Failed to update backlight on eDP[%d]\n", i); break; @@ -3506,9 +3508,17 @@ static int amdgpu_dm_backlight_update_status(struct backlight_device *bd) return rc ? 0 : 1; } -static int amdgpu_dm_backlight_get_brightness(struct backlight_device *bd) +static int amdgpu_dm_backlight_update_status(struct backlight_device *bd) { struct amdgpu_display_manager *dm = bl_get_data(bd); + + amdgpu_dm_backlight_set_level(dm, bd->props.brightness); + + return 0; +} + +static u32 amdgpu_dm_backlight_get_level(struct amdgpu_display_manager *dm) +{ struct amdgpu_dm_backlight_caps caps; amdgpu_dm_update_backlight_caps(dm); @@ -3521,17 +3531,24 @@ static int amdgpu_dm_backlight_get_brightness(struct backlight_device *bd) rc = dc_link_get_backlight_level_nits(link, &avg, &peak); if (!rc) - return bd->props.brightness; + return dm->brightness[0]; return convert_brightness_to_user(&caps, avg); } else { int ret = dc_link_get_backlight_level(dm->backlight_link[0]); if (ret == DC_ERROR_UNEXPECTED) - return bd->props.brightness; + return dm->brightness[0]; return convert_brightness_to_user(&caps, ret); } } +static int amdgpu_dm_backlight_get_brightness(struct backlight_device *bd) +{ + struct amdgpu_display_manager *dm = bl_get_data(bd); + + return amdgpu_dm_backlight_get_level(dm); +} + static const struct backlight_ops amdgpu_dm_backlight_ops = { .options = BL_CORE_SUSPENDRESUME, .get_brightness = amdgpu_dm_backlight_get_brightness, @@ -3543,8 +3560,11 @@ amdgpu_dm_register_backlight_device(struct amdgpu_display_manager *dm) { char bl_name[16]; struct backlight_properties props = { 0 }; + int i; amdgpu_dm_update_backlight_caps(dm); + for (i = 0; i < dm->num_of_edps; i++) + dm->brightness[i] = AMDGPU_MAX_BL_LEVEL; props.max_brightness = AMDGPU_MAX_BL_LEVEL; props.brightness = AMDGPU_MAX_BL_LEVEL; diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index c6f79c7dfac4..721c8b49730c 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -436,6 +436,13 @@ struct amdgpu_display_manager { */ struct list_head da_list; struct completion dmub_aux_transfer_done; + + /** + * @brightness: + * + * cached backlight values. + */ + u32 brightness[AMDGPU_DM_MAX_NUM_EDP]; }; enum dsc_clock_force_state { -- 2.31.1 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
