linux.git/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c, branch v6.6.134

drm/amd/display: Add HDR workaround for specific eDP

2024-10-10T09:58:00+00:00

commit 05af800704ee7187d9edd461ec90f3679b1c4aba upstream.

[WHY & HOW]
Some eDP panels suffer from flicking when HDR is enabled in KDE. This
quirk works around it by skipping VSC that is incompatible with eDP
panels.

Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3151
Cc: Mario Limonciello 
Cc: Alex Deucher 
Reviewed-by: Rodrigo Siqueira 
Signed-off-by: Alex Hung 
Signed-off-by: Aurabindo Pillai 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
(cherry picked from commit 4d4257280d7957727998ef90ccc7b69c7cca8376)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Add monitor patch for specific eDP

2024-03-06T14:48:40+00:00

commit b7cdccc6a849568775f738b1e233f751a8fed013 upstream.

[WHY]
Some eDP panels' ext caps don't write initial values. The value of
dpcd_addr (0x317) can be random and the backlight control interface
will be incorrect.

[HOW]
Add new panel patches to remove sink ext caps.

Cc: Mario Limonciello 
Cc: Alex Deucher 
Cc: stable@vger.kernel.org # 6.5.x
Cc: Tsung-hua Lin 
Cc: Chris Chi 
Reviewed-by: Wayne Lin 
Acked-by: Alex Hung 
Signed-off-by: Ryan Lin 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Align the returned error code with legacy DP

2024-02-01T00:19:09+00:00

commit bfe79f5fff1300d96203383582b078c7b0aec80a upstream.

[Why]
For usb4 connector, AUX transaction is handled by dmub utilizing a differnt
code path comparing to legacy DP connector. If the usb4 DP connector is
disconnected, AUX access will report EBUSY and cause igt@kms_dp_aux_dev
fail.

[How]
Align the error code with the one reported by legacy DP as EIO.

Cc: Mario Limonciello 
Cc: Alex Deucher 
Cc: stable@vger.kernel.org
Acked-by: Alex Hung 
Signed-off-by: Wayne Lin 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Add monitor patch for specific eDP

2024-01-20T10:51:41+00:00

[ Upstream commit 3d71a8726e05a35beb9de394e86ce896d69e563f ]

[WHY]
Some eDP panels's ext caps don't write initial value cause the value of
dpcd_addr(0x317) is random.  It means that sometimes the eDP will
clarify it is OLED, miniLED...etc cause the backlight control interface
is incorrect.

[HOW]
Add a new panel patch to remove sink ext caps(HDR,OLED...etc)

Tested-by: Daniel Wheeler 
Reviewed-by: Sun peng Li 
Acked-by: Rodrigo Siqueira 
Signed-off-by: Ivan Lipski 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: Replace ternary operator with min() in 'dm_helpers_parse_edid_caps'

2023-08-15T22:08:30+00:00

Fixes the following coccicheck:

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c:120:41-42: WARNING opportunity for min()

Cc: Harry Wentland 
Cc: Rodrigo Siqueira 
Cc: Aurabindo Pillai 
Cc: Alex Deucher 
Signed-off-by: Srinivasan Shanmugam 
Reviewed-by: Hamza Mahfooz 
Signed-off-by: Alex Deucher

drm/amd/display: Eliminate warnings in amdgpu_dm_helpers.c

2023-07-18T15:09:23+00:00

Fix the following warnings reported by checkpatch:

WARNING: Block comments use a trailing */ on a separate line
WARNING: Prefer using '"%s...", __func__' to using 'execute_synaptics_rc_command', this function's name, in a string
WARNING: Prefer using '"%s...", __func__' to using 'apply_synaptics_fifo_reset_wa', this function's name, in a string
WARNING: braces {} are not necessary for single statement blocks

Cc: Rodrigo Siqueira 
Cc: Aurabindo Pillai 
Signed-off-by: Srinivasan Shanmugam 
Reviewed-by: Aurabindo Pillai 
Signed-off-by: Alex Deucher

drm/amd/display: Remove unnecessary casts in amdgpu_dm_helpers.c

2023-07-07T17:51:47+00:00

Fixes the following category of checkpatch complaints:

WARNING: unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html
+               char *buf = (char *)kvcalloc(total, sizeof(char), GFP_KERNEL);

Cc: Rodrigo Siqueira 
Cc: Aurabindo Pillai 
Signed-off-by: Srinivasan Shanmugam 
Reviewed-by: Christian König 
Reviewed-by: Alex Deucher 
Signed-off-by: Alex Deucher

drm/amd/display: Add monitor specific edid quirk

2023-06-30T17:12:15+00:00

Disable FAMS on a Samsung Odyssey G9 monitor. Experiments show that this
monitor does not work well under some use cases, and is likely
implementation specific bug on the monitor's firmware.

Cc: stable@vger.kernel.org
Reviewed-by: Rodrigo Siqueira 
Signed-off-by: Aurabindo Pillai 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display/amdgpu_dm/amdgpu_dm_helpers: Move SYNAPTICS_DEVICE_ID into CONFIG_DRM_AMD_DC_DCN ifdef

2023-06-15T14:42:09+00:00

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_helpers.c:48:22: warning: ‘SYNAPTICS_DEVICE_ID’ defined but not used [-Wunused-const-variable=]

Cc: Harry Wentland 
Cc: Leo Li 
Cc: Rodrigo Siqueira 
Cc: Alex Deucher 
Cc: "Christian König" 
Cc: "Pan, Xinhui" 
Cc: David Airlie 
Cc: Daniel Vetter 
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Harry Wentland 
Signed-off-by: Lee Jones 
Signed-off-by: Hamza Mahfooz 
Signed-off-by: Alex Deucher

drm/amd/display: Write TEST_EDID_CHECKSUM_WRITE for EDID tests

2023-04-18T20:28:54+00:00

Extract edid's checksum and send it back for verification if EDID_TEST
is requested.

Signed-off-by: Mikita Lipski 
Acked-by: Aurabindo Pillai 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher