linux-stable.git/drivers/gpu/drm/panel/panel-samsung-sofef00.c, branch linux-rolling-stable Linux kernel stable tree drm/panel: sofef00: Non-continuous mode and video burst are supported 2025-11-19T16:13:41+00:00 David Heidelberg david@ixit.cz 2025-11-19T14:21:37+00:00 8bff3a2bf7c50bf45766edcd5440329d6b5cdf96 The panel supports both modes. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-12-6cd55471e84e@ixit.cz 
The panel supports both modes.

Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-12-6cd55471e84e@ixit.cz
drm/panel: sofef00: Mark the LPM mode always-on 2025-11-19T16:13:41+00:00 David Heidelberg david@ixit.cz 2025-11-19T14:21:36+00:00 73540e5e7c52264633c66aad681e53f7e2f54c57 The panel operated in low-power mode, with exception of changing the brightness levels. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-11-6cd55471e84e@ixit.cz 
The panel operated in low-power mode, with exception of changing the
brightness levels.

Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-11-6cd55471e84e@ixit.cz
drm/panel: sofef00: Simplify get_modes 2025-11-19T16:13:40+00:00 David Heidelberg david@ixit.cz 2025-11-19T14:21:35+00:00 940c451981ebd0901f39675c9ff3b3e1c9760571 Levearage drm_connector_helper_get_modes_fixed helper function. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-10-6cd55471e84e@ixit.cz 
Levearage drm_connector_helper_get_modes_fixed helper function.

Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-10-6cd55471e84e@ixit.cz
drm/panel: sofef00: Introduce compatible which includes the panel name 2025-11-19T16:13:39+00:00 David Heidelberg david@ixit.cz 2025-11-19T14:21:34+00:00 6a353661e7058795a800de3535e4e1448d125676 Compatible should correspond to the panel used and the driver currently supports only AMS628NW01 panel. Adapt the internal driver structures to reflect the name. Original, not very descriptive, compatible is kept to ensure compatibility with older device-trees. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-9-6cd55471e84e@ixit.cz 
Compatible should correspond to the panel used and the driver currently
supports only AMS628NW01 panel. Adapt the internal driver structures to
reflect the name.
Original, not very descriptive, compatible is kept to ensure compatibility
with older device-trees.

Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-9-6cd55471e84e@ixit.cz
drm/panel: sofef00: Initialise at 50% brightness 2025-11-19T16:13:39+00:00 Casey Connolly casey.connolly@linaro.org 2025-11-19T14:21:33+00:00 e2e94464cf44f91c92eb631d609f812c7aef8840 Initialising at max brightness is not necessary. Half brightness is much more comfortable. Signed-off-by: Casey Connolly <casey.connolly@linaro.org> Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-8-6cd55471e84e@ixit.cz 
Initialising at max brightness is not necessary.
Half brightness is much more comfortable.

Signed-off-by: Casey Connolly <casey.connolly@linaro.org>
Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-8-6cd55471e84e@ixit.cz
drm/panel: sofef00: Add prepare_prev_first flag to drm_panel 2025-11-19T16:13:38+00:00 Casey Connolly casey.connolly@linaro.org 2025-11-19T14:21:32+00:00 1e534a56578bbea59165c3507d2b967f29771792 This corrects the host initialisation sequence so that we can send DSI/DCS commands in prepare(). Signed-off-by: Casey Connolly <casey.connolly@linaro.org> Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-7-6cd55471e84e@ixit.cz 
This corrects the host initialisation sequence so that we can send
DSI/DCS commands in prepare().

Signed-off-by: Casey Connolly <casey.connolly@linaro.org>
Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-7-6cd55471e84e@ixit.cz
drm/panel: sofef00: Introduce page macro 2025-11-19T16:13:38+00:00 David Heidelberg david@ixit.cz 2025-11-19T14:21:31+00:00 9f1ba273f55f93759cfd1098e0682b03eb115bb4 Introducing the macro make the code a bit clearer. Looking at other Samsung drivers, I assume it's lvl2, thou due to not available documentation it's only educated guess. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-6-6cd55471e84e@ixit.cz 
Introducing the macro make the code a bit clearer.

Looking at other Samsung drivers, I assume it's lvl2, thou due to not
available documentation it's only educated guess.

Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-6-6cd55471e84e@ixit.cz
drm/panel: sofef00: Split sending commands to the enable/disable functions 2025-11-19T16:13:37+00:00 David Heidelberg david@ixit.cz 2025-11-19T14:21:30+00:00 18642542ac4916807fc0925cdcb9356f5802e2ae It's not possible to send DSI panel commands in the .unprepare. Move it to .disable and do similar for prepare, where we move the display on to the .enable. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-5-6cd55471e84e@ixit.cz 
It's not possible to send DSI panel commands in the .unprepare. Move it
to .disable and do similar for prepare, where we move the display on to
the .enable.

Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-5-6cd55471e84e@ixit.cz
drm/panel: sofef00: Handle all regulators 2025-11-19T16:13:37+00:00 David Heidelberg david@ixit.cz 2025-11-19T14:21:29+00:00 dfc7e0859e05991b0920bd249434e44866a11bd1 Recently we documented, there is more than vddio regulator, adapt the driver to work with VCI and POC regulator. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-4-6cd55471e84e@ixit.cz 
Recently we documented, there is more than vddio regulator, adapt the
driver to work with VCI and POC regulator.

Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-4-6cd55471e84e@ixit.cz
drm/panel: sofef00: Clean up panel description after s6e3fc2x01 removal 2025-11-19T16:13:36+00:00 David Heidelberg david@ixit.cz 2025-11-19T14:21:28+00:00 05aeb5bb4b699b51f88d9f5585005b6eb66a496b Remove leftover from s6e3fc2x01 support drop and clarify supported panel. The Samsung SOFEF00 DDIC is used in multiple phones, so describe it properly and generalize. Fixes: e1eb7293ab41 ("drm/panel: samsung-sofef00: Drop s6e3fc2x01 support") Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-3-6cd55471e84e@ixit.cz 
Remove leftover from s6e3fc2x01 support drop and clarify supported panel.

The Samsung SOFEF00 DDIC is used in multiple phones, so describe it
properly and generalize.

Fixes: e1eb7293ab41 ("drm/panel: samsung-sofef00: Drop s6e3fc2x01 support")
Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-3-6cd55471e84e@ixit.cz