[PATCH 6.8 170/172] drm/amd/display: Return max resolution supported by DWB

Greg Kroah-Hartman
2024-04-15T14:32:04Z

From: Alex Hung <alex.hung@amd.com>

commit 2cc69a10d83180f3de9f5afe3a98e972b1453d4c upstream.

mode_config's max width x height is 4096x2160 and is higher than DWB's
max resolution 3840x2160 which is returned instead.

Cc: stable@vger.kernel.org
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.c
@@ -76,10 +76,8 @@ static int amdgpu_dm_wb_encoder_atomic_c

static int amdgpu_dm_wb_connector_get_modes(struct drm_connector *connector)
{
- struct drm_device *dev = connector->dev;
-
- return drm_add_modes_noedid(connector, dev->mode_config.max_width,
- dev->mode_config.max_height);
+ /* Maximum resolution supported by DWB */
+ return drm_add_modes_noedid(connector, 3840, 2160);
}

static int amdgpu_dm_wb_prepare_job(struct drm_writeback_connector *wb_connector,