* [PATCH 5.12 019/677] drm: bridge: fix LONTIUM use of mipi_dsi_() functions
[not found] <20210512144837.204217980@linuxfoundation.org>
@ 2021-05-12 14:41 ` Greg Kroah-Hartman
2021-05-12 14:42 ` [PATCH 5.12 078/677] drm: bridge: fix ANX7625 " Greg Kroah-Hartman
2021-05-12 14:46 ` [PATCH 5.12 342/677] drm/stm: Fix bus_flags handling Greg Kroah-Hartman
2 siblings, 0 replies; 3+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-12 14:41 UTC (permalink / raw)
To: linux-kernel
Cc: kernel test robot, Neil Armstrong, Greg Kroah-Hartman, dri-devel,
Randy Dunlap, stable, Bjorn Andersson, Andrzej Hajda, Vinod Koul,
Srinivas Kandagatla, Adren Grassein, Dmitry Baryshkov,
Sam Ravnborg, Robert Foss
From: Randy Dunlap <rdunlap@infradead.org>
commit ad085b3a712a89e4a48472121b231add7a8362e4 upstream.
The Lontium DRM bridge drivers use mipi_dsi_() function interfaces so
they need to select DRM_MIPI_DSI to prevent build errors.
ERROR: modpost: "mipi_dsi_attach" [drivers/gpu/drm/bridge/lontium-lt9611uxc.ko] undefined!
ERROR: modpost: "mipi_dsi_device_register_full" [drivers/gpu/drm/bridge/lontium-lt9611uxc.ko] undefined!
ERROR: modpost: "of_find_mipi_dsi_host_by_node" [drivers/gpu/drm/bridge/lontium-lt9611uxc.ko] undefined!
ERROR: modpost: "mipi_dsi_device_unregister" [drivers/gpu/drm/bridge/lontium-lt9611uxc.ko] undefined!
ERROR: modpost: "mipi_dsi_detach" [drivers/gpu/drm/bridge/lontium-lt9611uxc.ko] undefined!
ERROR: modpost: "mipi_dsi_attach" [drivers/gpu/drm/bridge/lontium-lt9611.ko] undefined!
ERROR: modpost: "mipi_dsi_device_register_full" [drivers/gpu/drm/bridge/lontium-lt9611.ko] undefined!
ERROR: modpost: "of_find_mipi_dsi_host_by_node" [drivers/gpu/drm/bridge/lontium-lt9611.ko] undefined!
ERROR: modpost: "mipi_dsi_device_unregister" [drivers/gpu/drm/bridge/lontium-lt9611.ko] undefined!
ERROR: modpost: "mipi_dsi_detach" [drivers/gpu/drm/bridge/lontium-lt9611.ko] undefined!
WARNING: modpost: suppressed 5 unresolved symbol warnings because there were too many)
Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Fixes: 0cbbd5b1a012 ("drm: bridge: add support for lontium LT9611UXC bridge")
Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Adren Grassein <adrien.grassein@gmail.com>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Adrien Grassein <adrien.grassein@gmail.com>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: stable@vger.kernel.org
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210415183639.1487-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/bridge/Kconfig | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -67,6 +67,7 @@ config DRM_LONTIUM_LT9611UXC
depends on OF
select DRM_PANEL_BRIDGE
select DRM_KMS_HELPER
+ select DRM_MIPI_DSI
select REGMAP_I2C
help
Driver for Lontium LT9611UXC DSI to HDMI bridge
@@ -151,6 +152,7 @@ config DRM_SII902X
tristate "Silicon Image sii902x RGB/HDMI bridge"
depends on OF
select DRM_KMS_HELPER
+ select DRM_MIPI_DSI
select REGMAP_I2C
select I2C_MUX
select SND_SOC_HDMI_CODEC if SND_SOC
@@ -200,6 +202,7 @@ config DRM_TOSHIBA_TC358767
tristate "Toshiba TC358767 eDP bridge"
depends on OF
select DRM_KMS_HELPER
+ select DRM_MIPI_DSI
select REGMAP_I2C
select DRM_PANEL
help
^ permalink raw reply [flat|nested] 3+ messages in thread* [PATCH 5.12 078/677] drm: bridge: fix ANX7625 use of mipi_dsi_() functions
[not found] <20210512144837.204217980@linuxfoundation.org>
2021-05-12 14:41 ` [PATCH 5.12 019/677] drm: bridge: fix LONTIUM use of mipi_dsi_() functions Greg Kroah-Hartman
@ 2021-05-12 14:42 ` Greg Kroah-Hartman
2021-05-12 14:46 ` [PATCH 5.12 342/677] drm/stm: Fix bus_flags handling Greg Kroah-Hartman
2 siblings, 0 replies; 3+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-12 14:42 UTC (permalink / raw)
To: linux-kernel
Cc: kernel test robot, Neil Armstrong, Greg Kroah-Hartman, dri-devel,
Randy Dunlap, Robert Foss, Andrzej Hajda, stable, Sam Ravnborg,
Xin Ji
From: Randy Dunlap <rdunlap@infradead.org>
commit ed01fca38717169fcb61bd45ad1c3750d9c40d59 upstream.
The Analogix DRM ANX7625 bridge driver uses mips_dsi_() function
interfaces so it should select DRM_MIPI_DSI to prevent build errors.
ERROR: modpost: "mipi_dsi_attach" [drivers/gpu/drm/bridge/analogix/anx7625.ko] undefined!
ERROR: modpost: "mipi_dsi_device_register_full" [drivers/gpu/drm/bridge/analogix/anx7625.ko] undefined!
ERROR: modpost: "of_find_mipi_dsi_host_by_node" [drivers/gpu/drm/bridge/analogix/anx7625.ko] undefined!
ERROR: modpost: "mipi_dsi_device_unregister" [drivers/gpu/drm/bridge/analogix/anx7625.ko] undefined!
ERROR: modpost: "mipi_dsi_detach" [drivers/gpu/drm/bridge/analogix/anx7625.ko] undefined!
Fixes: 8bdfc5dae4e3 ("drm/bridge: anx7625: Add anx7625 MIPI DSI/DPI to DP")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Cc: Xin Ji <xji@analogixsemi.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210415183619.1431-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/bridge/analogix/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/bridge/analogix/Kconfig
+++ b/drivers/gpu/drm/bridge/analogix/Kconfig
@@ -30,6 +30,7 @@ config DRM_ANALOGIX_ANX7625
tristate "Analogix Anx7625 MIPI to DP interface support"
depends on DRM
depends on OF
+ select DRM_MIPI_DSI
help
ANX7625 is an ultra-low power 4K mobile HD transmitter
designed for portable devices. It converts MIPI/DPI to
^ permalink raw reply [flat|nested] 3+ messages in thread* [PATCH 5.12 342/677] drm/stm: Fix bus_flags handling
[not found] <20210512144837.204217980@linuxfoundation.org>
2021-05-12 14:41 ` [PATCH 5.12 019/677] drm: bridge: fix LONTIUM use of mipi_dsi_() functions Greg Kroah-Hartman
2021-05-12 14:42 ` [PATCH 5.12 078/677] drm: bridge: fix ANX7625 " Greg Kroah-Hartman
@ 2021-05-12 14:46 ` Greg Kroah-Hartman
2 siblings, 0 replies; 3+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-12 14:46 UTC (permalink / raw)
To: linux-kernel, dri-devel
Cc: Marek Vasut, Sasha Levin, Vincent Abriou, Alexandre Torgue,
Antonio Borneo, Greg Kroah-Hartman, Yannick Fertre,
Philippe Cornu, stable, Yannick Fertre, Philippe Cornu,
Maxime Coquelin, Sam Ravnborg, linux-stm32, linux-arm-kernel,
Benjamin Gaignard
From: Marek Vasut <marex@denx.de>
[ Upstream commit 99e360442f223dd40fc23ae07c7a263836fd27e6 ]
The drm_display_mode_to_videomode() does not populate DISPLAY_FLAGS_DE_LOW
or DISPLAY_FLAGS_PIXDATA_NEGEDGE flags in struct videomode. Therefore, no
matter what polarity the next bridge or display might require, these flags
are never set, and thus the LTDC GCR_DEPOL and GCR_PCPOL bits are never set
and the LTDC behaves as if both DISPLAY_FLAGS_PIXDATA_POSEDGE and
DISPLAY_FLAGS_DE_HIGH were always set.
The fix for this problem is taken almost verbatim from MXSFB driver. In
case there is a bridge attached to the LTDC, the bridge might have extra
polarity requirements, so extract bus_flags from the bridge and use them
for LTDC configuration. Otherwise, extract bus_flags from the connector,
which is the display.
Fixes: b759012c5fa7 ("drm/stm: Add STM32 LTDC driver")
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Antonio Borneo <antonio.borneo@st.com>
Cc: Benjamin Gaignard <benjamin.gaignard@st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Philippe Cornu <philippe.cornu@st.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: Yannick Fertre <yannick.fertre@st.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
To: dri-devel@lists.freedesktop.org
Tested-by: Yannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: Philippe Cornu <philippe.cornu@foss.st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210127110756.125570-1-marex@denx.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/stm/ltdc.c | 33 +++++++++++++++++++++++++++++++--
1 file changed, 31 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index 7812094f93d6..6f3b523e16e8 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -525,13 +525,42 @@ static void ltdc_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
struct ltdc_device *ldev = crtc_to_ltdc(crtc);
struct drm_device *ddev = crtc->dev;
+ struct drm_connector_list_iter iter;
+ struct drm_connector *connector = NULL;
+ struct drm_encoder *encoder = NULL;
+ struct drm_bridge *bridge = NULL;
struct drm_display_mode *mode = &crtc->state->adjusted_mode;
struct videomode vm;
u32 hsync, vsync, accum_hbp, accum_vbp, accum_act_w, accum_act_h;
u32 total_width, total_height;
+ u32 bus_flags = 0;
u32 val;
int ret;
+ /* get encoder from crtc */
+ drm_for_each_encoder(encoder, ddev)
+ if (encoder->crtc == crtc)
+ break;
+
+ if (encoder) {
+ /* get bridge from encoder */
+ list_for_each_entry(bridge, &encoder->bridge_chain, chain_node)
+ if (bridge->encoder == encoder)
+ break;
+
+ /* Get the connector from encoder */
+ drm_connector_list_iter_begin(ddev, &iter);
+ drm_for_each_connector_iter(connector, &iter)
+ if (connector->encoder == encoder)
+ break;
+ drm_connector_list_iter_end(&iter);
+ }
+
+ if (bridge && bridge->timings)
+ bus_flags = bridge->timings->input_bus_flags;
+ else if (connector)
+ bus_flags = connector->display_info.bus_flags;
+
if (!pm_runtime_active(ddev->dev)) {
ret = pm_runtime_get_sync(ddev->dev);
if (ret) {
@@ -567,10 +596,10 @@ static void ltdc_crtc_mode_set_nofb(struct drm_crtc *crtc)
if (vm.flags & DISPLAY_FLAGS_VSYNC_HIGH)
val |= GCR_VSPOL;
- if (vm.flags & DISPLAY_FLAGS_DE_LOW)
+ if (bus_flags & DRM_BUS_FLAG_DE_LOW)
val |= GCR_DEPOL;
- if (vm.flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)
+ if (bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE)
val |= GCR_PCPOL;
reg_update_bits(ldev->regs, LTDC_GCR,
--
2.30.2
^ permalink raw reply related [flat|nested] 3+ messages in thread