linux-stable.git/drivers/gpu/drm/bridge, branch v6.2.12 Linux kernel stable tree drm/bridge: lt9611: Fix PLL being unable to lock 2023-04-13T15:02:57+00:00 Robert Foss robert.foss@linaro.org 2022-12-13T15:03:04+00:00 678bf7577d7183ac3c60544c033895db78c59532 commit 2a9df204be0bbb896e087f00b9ee3fc559d5a608 upstream. This fixes PLL being unable to lock, and is derived from an equivalent downstream commit. Available LT9611 documentation does not list this register, neither does LT9611UXC (which is a different chip). This commit has been confirmed to fix HDMI output on DragonBoard 845c. Suggested-by: Amit Pundir <amit.pundir@linaro.org> Reviewed-by: Amit Pundir <amit.pundir@linaro.org> Signed-off-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221213150304.4189760-1-robert.foss@linaro.org Signed-off-by: Amit Pundir <amit.pundir@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 2a9df204be0bbb896e087f00b9ee3fc559d5a608 upstream.

This fixes PLL being unable to lock, and is derived from an equivalent
downstream commit.

Available LT9611 documentation does not list this register, neither does
LT9611UXC (which is a different chip).

This commit has been confirmed to fix HDMI output on DragonBoard 845c.

Suggested-by: Amit Pundir <amit.pundir@linaro.org>
Reviewed-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221213150304.4189760-1-robert.foss@linaro.org
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drm/bridge: lt8912b: return EPROBE_DEFER if bridge is not found 2023-03-30T10:51:39+00:00 Matheus Castello matheus.castello@toradex.com 2023-03-22T14:38:21+00:00 d7e74d0042469036bcea7da25187592165ac03bc commit 1a70ca89d59c7c8af006d29b965a95ede0abb0da upstream. Returns EPROBE_DEFER when of_drm_find_bridge() fails, this is consistent with what all the other DRM bridge drivers are doing and this is required since the bridge might not be there when the driver is probed and this should not be a fatal failure. Cc: <stable@vger.kernel.org> Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") Signed-off-by: Matheus Castello <matheus.castello@toradex.com> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230322143821.109744-1-francesco@dolcini.it Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 1a70ca89d59c7c8af006d29b965a95ede0abb0da upstream.

Returns EPROBE_DEFER when of_drm_find_bridge() fails, this is consistent
with what all the other DRM bridge drivers are doing and this is
required since the bridge might not be there when the driver is probed
and this should not be a fatal failure.

Cc: <stable@vger.kernel.org>
Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Signed-off-by: Matheus Castello <matheus.castello@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230322143821.109744-1-francesco@dolcini.it
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drm/bridge: lt9611: pass a pointer to the of node 2023-03-10T08:28:31+00:00 Dmitry Baryshkov dmitry.baryshkov@linaro.org 2023-01-18T08:16:51+00:00 ef0c9dfb7051513578854ad6e77b8fe0716e0872 [ Upstream commit b0a7f8736789935f62d6df32d441cdf05a5c05d2 ] Pass a pointer to the OF node while registering lt9611 MIPI device. Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge") Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-7-dmitry.baryshkov@linaro.org Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit b0a7f8736789935f62d6df32d441cdf05a5c05d2 ]

Pass a pointer to the OF node while registering lt9611 MIPI device.

Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-7-dmitry.baryshkov@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
drm/bridge: lt9611: fix clock calculation 2023-03-10T08:28:31+00:00 Dmitry Baryshkov dmitry.baryshkov@linaro.org 2023-01-18T08:16:50+00:00 ba6c79b56d8a98b91cd147bf412b713130523c7b [ Upstream commit 2576eb26494eb0509dd9ceb0cd27771a7a5e3674 ] Instead of having several fixed values for the pcr register, calculate it before programming. This allows the bridge to support most of the display modes. Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge") Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-6-dmitry.baryshkov@linaro.org Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 2576eb26494eb0509dd9ceb0cd27771a7a5e3674 ]

Instead of having several fixed values for the pcr register, calculate
it before programming. This allows the bridge to support most of the
display modes.

Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-6-dmitry.baryshkov@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
drm/bridge: lt9611: fix programming of video modes 2023-03-10T08:28:31+00:00 Dmitry Baryshkov dmitry.baryshkov@linaro.org 2023-01-18T08:16:49+00:00 a6b4324a84693e77cd9d5679b4fb85484233d791 [ Upstream commit ad188aa47edaa033a270e1a3efae43836ff47569 ] Program the upper part of the hfront_porch into the proper register. Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge") Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-5-dmitry.baryshkov@linaro.org Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit ad188aa47edaa033a270e1a3efae43836ff47569 ]

Program the upper part of the hfront_porch into the proper register.

Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-5-dmitry.baryshkov@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
drm/bridge: lt9611: fix polarity programming 2023-03-10T08:28:30+00:00 Dmitry Baryshkov dmitry.baryshkov@linaro.org 2023-01-18T08:16:48+00:00 a660eb89db983080d63a882ae273d4feceb5ee0a [ Upstream commit 0b157efa384ea417304b1da284ee2f603c607fc3 ] Fix programming of hsync and vsync polarities Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge") Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-4-dmitry.baryshkov@linaro.org Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 0b157efa384ea417304b1da284ee2f603c607fc3 ]

Fix programming of hsync and vsync polarities

Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-4-dmitry.baryshkov@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
drm/bridge: lt9611: fix HPD reenablement 2023-03-10T08:28:30+00:00 Dmitry Baryshkov dmitry.baryshkov@linaro.org 2023-01-18T08:16:47+00:00 9701d566238f0dc6308b9f5b7bf0981760fb2c83 [ Upstream commit a7790f6bd38f3642b60ae3504a2c749135b89451 ] The driver will reset the bridge in the atomic_pre_enable(). However this will also drop the HPD interrupt state. Instead of resetting the bridge, properly wake it up. This fixes the HPD interrupt delivery after the disable/enable cycle. Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge") Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-3-dmitry.baryshkov@linaro.org Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit a7790f6bd38f3642b60ae3504a2c749135b89451 ]

The driver will reset the bridge in the atomic_pre_enable(). However
this will also drop the HPD interrupt state. Instead of resetting the
bridge, properly wake it up. This fixes the HPD interrupt delivery after
the disable/enable cycle.

Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-3-dmitry.baryshkov@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
drm/bridge: lt9611: fix sleep mode setup 2023-03-10T08:28:30+00:00 Dmitry Baryshkov dmitry.baryshkov@linaro.org 2023-01-18T08:16:46+00:00 56e7d7dcc206eacfd7035364260fcfdcade35728 [ Upstream commit ae2d329f104b75a0a78dcaded29fe6283289cdf9 ] On atomic_post_disable the bridge goes to the low power state. However the code disables too much of the chip, so the HPD event is not being detected and delivered to the host. Reduce the power saving in order to get the HPD event. Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge") Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-2-dmitry.baryshkov@linaro.org Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit ae2d329f104b75a0a78dcaded29fe6283289cdf9 ]

On atomic_post_disable the bridge goes to the low power state. However
the code disables too much of the chip, so the HPD event is not being
detected and delivered to the host. Reduce the power saving in order to
get the HPD event.

Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-2-dmitry.baryshkov@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
drm/bridge: tc358767: Set default CLRSIPO count 2023-03-10T08:28:29+00:00 Marek Vasut marex@denx.de 2022-10-16T00:35:56+00:00 8efc9f6379be6d21c8ed25eaf1c81882200c3e31 [ Upstream commit 01338bb82fed40a6a234c2b36a92367c8671adf0 ] The current CLRSIPO count is still marginal and does not work with high DSI clock rates in burst mode. Increase it further to allow the DSI link to work at up to 1Gbps lane speed. This returns the counts to defaults as provided by datasheet. Fixes: ea6490b02240b ("drm/bridge: tc358767: increase CLRSIPO count") Signed-off-by: Marek Vasut <marex@denx.de> Acked-by: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20221016003556.406441-1-marex@denx.de Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 01338bb82fed40a6a234c2b36a92367c8671adf0 ]

The current CLRSIPO count is still marginal and does not work with high
DSI clock rates in burst mode. Increase it further to allow the DSI link
to work at up to 1Gbps lane speed. This returns the counts to defaults
as provided by datasheet.

Fixes: ea6490b02240b ("drm/bridge: tc358767: increase CLRSIPO count")
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20221016003556.406441-1-marex@denx.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
drm/bridge: it6505: Guard bridge power in IRQ handler 2023-03-10T08:28:26+00:00 Pin-yen Lin treapking@chromium.org 2022-11-09T09:52:27+00:00 d2d17ba47686ac14dd7d5b98a3ce5aa46e9bc081 [ Upstream commit 5eb9a4314053bda7642643f70f49a2b415920812 ] Add a pair of pm_runtime_get_if_in_use and pm_runtime_put_sync in the interrupt handler to make sure the bridge won't be powered off during the interrupt handlings. Also remove the irq_lock mutex because it's not guarding anything now. Fixes: ab28896f1a83 ("drm/bridge: it6505: Improve synchronization between extcon subsystem") Signed-off-by: Pin-yen Lin <treapking@chromium.org> Reviewed-by: Robert Foss <robert.foss@linaro.org> Signed-off-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221109095227.3320919-1-treapking@chromium.org Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 5eb9a4314053bda7642643f70f49a2b415920812 ]

Add a pair of pm_runtime_get_if_in_use and pm_runtime_put_sync in the
interrupt handler to make sure the bridge won't be powered off during
the interrupt handlings. Also remove the irq_lock mutex because it's not
guarding anything now.

Fixes: ab28896f1a83 ("drm/bridge: it6505: Improve synchronization between extcon subsystem")
Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221109095227.3320919-1-treapking@chromium.org
Signed-off-by: Sasha Levin <sashal@kernel.org>