linux-stable.git/drivers/gpu/drm/ast, branch linux-6.14.y

drm/ast: Hide Gens 1 to 3 TX detection in branch

2025-05-29T09:13:45+00:00

[ Upstream commit 87478ba50a05a1f44508316ae109622e8a85adc9 ]

Gen7 only supports ASTDP. Gens 4 to 6 support various TX chips,
except ASTDP. These boards detect the TX chips by reading the SoC
scratch register as VGACRD1.

Gens 1 to 3 only support SIL164. These boards read the DVO bit from
VGACRA3. Hence move this test behind a branch, so that it does not
run on later generations.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Jocelyn Falempe 
Link: https://patchwork.freedesktop.org/patch/msgid/20250117103450.28692-6-tzimmermann@suse.de
Signed-off-by: Sasha Levin

drm/ast: Find VBIOS mode from regular display size

2025-05-29T09:13:42+00:00

[ Upstream commit c81202906b5cd56db403e95db3d29c9dfc8c74c1 ]

The ast driver looks up supplied display modes from an internal list of
display modes supported by the VBIOS.

Do not use the crtc_-prefixed display values from struct drm_display_mode
for looking up the VBIOS mode. The fields contain raw values that the
driver programs to hardware. They are affected by display settings like
double-scan or interlace.

Instead use the regular vdisplay and hdisplay fields for lookup. As the
programmed values can now differ from the values used for lookup, set
struct drm_display_mode.crtc_vdisplay and .crtc_hdisplay from the VBIOS
mode.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Jocelyn Falempe 
Link: https://patchwork.freedesktop.org/patch/msgid/20250131092257.115596-9-tzimmermann@suse.de
Signed-off-by: Sasha Levin

drm/ast: Fix ast_dp connection status

2025-04-25T08:51:11+00:00

commit c28f72c6ca98e039c2aa5aac6752c416bc31dbab upstream.

ast_dp_is_connected() used to also check for link training success
to report the DP connector as connected. Without this check, the
physical_status is always connected. So if no monitor is present, it
will fail to read the EDID and set the default resolution to 640x480
instead of 1024x768.

Signed-off-by: Jocelyn Falempe 
Fixes: 2281475168d2 ("drm/ast: astdp: Perform link training during atomic_enable")
Reported-by: Jerry Hoemann 
Tested-by: Jose Lopez 
Cc: Thomas Zimmermann 
Cc: Dave Airlie 
Cc: dri-devel@lists.freedesktop.org
Cc:  # v6.12+
Reviewed-by: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/20250124141142.2434138-1-jfalempe@redhat.com
Signed-off-by: Greg Kroah-Hartman

Merge remote-tracking branch 'drm-misc/drm-misc-next-fixes' into drm-misc-fixes

2025-02-06T08:59:35+00:00

Merge the few remaining patches stuck into drm-misc-next-fixes.

Signed-off-by: Maxime Ripard

drm/ast: astdp: Fix timeout for enabling video signal

2025-01-28T13:31:50+00:00

The ASTDP transmitter sometimes takes up to 1 second for enabling the
video signal, while the timeout is only 200 msec. This results in a
kernel error message. Increase the timeout to 1 second. An example
of the error message is shown below.

[  697.084433] ------------[ cut here ]------------
[  697.091115] ast 0000:02:00.0: [drm] drm_WARN_ON(!__ast_dp_wait_enable(ast, enabled))
[  697.091233] WARNING: CPU: 1 PID: 160 at drivers/gpu/drm/ast/ast_dp.c:232 ast_dp_set_enable+0x123/0x140 [ast]
[...]
[  697.272469] RIP: 0010:ast_dp_set_enable+0x123/0x140 [ast]
[...]
[  697.415283] Call Trace:
[  697.420727]  
[  697.425908]  ? show_trace_log_lvl+0x196/0x2c0
[  697.433304]  ? show_trace_log_lvl+0x196/0x2c0
[  697.440693]  ? drm_atomic_helper_commit_modeset_enables+0x30a/0x470
[  697.450115]  ? ast_dp_set_enable+0x123/0x140 [ast]
[  697.458059]  ? __warn.cold+0xaf/0xca
[  697.464713]  ? ast_dp_set_enable+0x123/0x140 [ast]
[  697.472633]  ? report_bug+0x134/0x1d0
[  697.479544]  ? handle_bug+0x58/0x90
[  697.486127]  ? exc_invalid_op+0x13/0x40
[  697.492975]  ? asm_exc_invalid_op+0x16/0x20
[  697.500224]  ? preempt_count_sub+0x14/0xc0
[  697.507473]  ? ast_dp_set_enable+0x123/0x140 [ast]
[  697.515377]  ? ast_dp_set_enable+0x123/0x140 [ast]
[  697.523227]  drm_atomic_helper_commit_modeset_enables+0x30a/0x470
[  697.532388]  drm_atomic_helper_commit_tail+0x58/0x90
[  697.540400]  ast_mode_config_helper_atomic_commit_tail+0x30/0x40 [ast]
[  697.550009]  commit_tail+0xfe/0x1d0
[  697.556547]  drm_atomic_helper_commit+0x198/0x1c0

This is a cosmetical problem. Enabling the video signal still works
even with the error message. The problem has always been present, but
only recent versions of the ast driver warn about missing the timeout.

Signed-off-by: Thomas Zimmermann 
Fixes: 4e29cc7c5c67 ("drm/ast: astdp: Replace ast_dp_set_on_off()")
Cc: Thomas Zimmermann 
Cc: Jocelyn Falempe 
Cc: Dave Airlie 
Cc: dri-devel@lists.freedesktop.org
Cc:  # v6.13+
Reviewed-by: Jocelyn Falempe 
Link: https://patchwork.freedesktop.org/patch/msgid/20250127134423.84266-1-tzimmermann@suse.de

drm: remove driver date from struct drm_driver and all drivers

2024-12-05T10:35:42+00:00

We stopped using the driver initialized date in commit 7fb8af6798e8
("drm: deprecate driver date") and (eventually) started returning "0"
for drm_version ioctl instead.

Finish the job, and remove the unused date member from struct
drm_driver, its initialization from drivers, along with the common
DRIVER_DATE macros.

v2: Also update drivers/accel (kernel test robot)

Reviewed-by: Javier Martinez Canillas 
Acked-by: Alex Deucher 
Acked-by: Simon Ser 
Acked-by: Jeffrey Hugo 
Acked-by: Lucas De Marchi 
Acked-by: Dmitry Baryshkov  # msm
Reviewed-by: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/1f2bf2543aed270a06f6c707fd6ed1b78bf16712.1733322525.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula

drm/client: Move public client header to clients/ subdirectory

2024-11-15T08:42:13+00:00

Move the public header file drm_client_setup.h to the clients/
subdirectory and update all drivers. No functional changes.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Jocelyn Falempe 
Link: https://patchwork.freedesktop.org/patch/msgid/20241108154600.126162-3-tzimmermann@suse.de

Backmerge v6.12-rc6 of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into drm-next

2024-11-04T04:25:33+00:00

Backmerge Linus tree for some drm-fixes needed for msm and xe merges.

Signed-off-by: Dave Airlie

drm/ast: vga: Clear EDID if no display is connected

2024-10-17T06:50:14+00:00

Do not keep the obsolete EDID around after unplugging the display
from the connector.

Signed-off-by: Thomas Zimmermann 
Fixes: 2a2391f857cd ("drm/ast: vga: Transparently handle BMC support")
Cc: Thomas Zimmermann 
Cc: Jocelyn Falempe 
Cc: Dave Airlie 
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Jocelyn Falempe 
Link: https://patchwork.freedesktop.org/patch/msgid/20241015065113.11790-3-tzimmermann@suse.de

drm/ast: sil164: Clear EDID if no display is connected

2024-10-17T06:50:14+00:00

Do not keep the obsolete EDID around after unplugging the display
from the connector.

Signed-off-by: Thomas Zimmermann 
Fixes: d20c2f846428 ("drm/ast: sil164: Transparently handle BMC support")
Cc: Thomas Zimmermann 
Cc: Jocelyn Falempe 
Cc: Dave Airlie 
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Jocelyn Falempe 
Link: https://patchwork.freedesktop.org/patch/msgid/20241015065113.11790-2-tzimmermann@suse.de