kernel/linux.git/drivers/gpu/drm/bridge/waveshare-dsi.c, branch linux-7.0.yLinux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=linux-7.0.y2025-09-19T02:52:45+00:00drm/bridge: waveshare-dsi: Fix bailout for devm_drm_bridge_alloc()2025-09-19T02:52:45+00:00Liu Yingvictor.liu@nxp.com2025-08-06T08:41:21+00:00urn:sha1:3e6339a19cfc93bd3fec2179a2e766ab1cf39e16
devm_drm_bridge_alloc() returns ERR_PTR on failure instead of a
NULL pointer, so use IS_ERR() to check the returned pointer and
turn proper error code on failure by using PTR_ERR().
Fixes: dbdea37add13 ("drm: bridge: Add waveshare DSI2DPI unit driver")
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250806084121.510207-1-victor.liu@nxp.com
drm: bridge: Add waveshare DSI2DPI unit driver2025-08-06T06:49:33+00:00Joseph Guoqijian.guo@nxp.com2025-08-06T01:33:34+00:00urn:sha1:dbdea37add132a0f5d96006ea01fa73280984b88
Waveshare touchscreen consists of a DPI panel and a driver board.
The waveshare driver board consists of ICN6211 and a MCU to
convert DSI to DPI and control the backlight.
This driver treats the MCU and ICN6211 board as a whole unit.
It can support all resolution waveshare DSI2DPI based panel,
the timing table should come from 'panel-dpi' panel in the device tree.
Signed-off-by: Joseph Guo <qijian.guo@nxp.com>
Suggested-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250806-waveshare-v3-3-fd28e01f064f@nxp.com