[AMD Official Use Only - General]

Sorry please ignore this doing this for experimentation of creating cover letter.

-----Original Message----- From: SHANMUGAM, SRINIVASAN SRINIVASAN.SHANMUGAM@amd.com Sent: Thursday, February 22, 2024 1:38 PM To: Khatri, Sunil Sunil.Khatri@amd.com; SHANMUGAM, SRINIVASAN SRINIVASAN.SHANMUGAM@amd.com Cc: stable@vger.kernel.org; Mahfooz, Hamza Hamza.Mahfooz@amd.com; Limonciello, Mario Mario.Limonciello@amd.com; Siqueira, Rodrigo Rodrigo.Siqueira@amd.com; Pillai, Aurabindo Aurabindo.Pillai@amd.com Subject: [PATCH 3/3] drm/amdgpu/display: Address kdoc for 'is_psr_su' in 'fill_dc_dirty_rects'

The is_psr_su parameter is a boolean flag indicating whether the Panel Self Refresh Selective Update (PSR SU) feature is enabled which is a power-saving feature that allows only the updated regions of the screen to be refreshed, reducing the amount of data that needs to be sent to the display.

Fixes the below with gcc W=1: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:5257: warning: Function parameter or member 'is_psr_su' not described in 'fill_dc_dirty_rects'

Fixes: 13d6b0812e58 ("drm/amdgpu: make damage clips support configurable") Cc: stable@vger.kernel.org Cc: Hamza Mahfooz hamza.mahfooz@amd.com Cc: Mario Limonciello mario.limonciello@amd.com Cc: Rodrigo Siqueira Rodrigo.Siqueira@amd.com Cc: Aurabindo Pillai aurabindo.pillai@amd.com Signed-off-by: Srinivasan Shanmugam srinivasan.shanmugam@amd.com Reviewed-by: Rodrigo Siqueira Rodrigo.Siqueira@amd.com --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++++ 1 file changed, 4 insertions(+)

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 ed4873060da7..379836383ea9 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -5234,6 +5234,10 @@ static inline void fill_dc_dirty_rect(struct drm_plane *plane, * @new_plane_state: New state of @plane * @crtc_state: New state of CRTC connected to the @plane * @flip_addrs: DC flip tracking struct, which also tracts dirty rects + * @is_psr_su: Flag indicating whether Panel Self Refresh Selective Update (PSR SU) is enabled. + * If PSR SU is enabled and damage clips are available, only the regions of the screen + * that have changed will be updated. If PSR SU is not enabled, + * or if damage clips are not available, the entire screen will be updated. * @dirty_regions_changed: dirty regions changed * * For PSR SU, DC informs the DMUB uController of dirty rectangle regions -- 2.34.1