kernel.git/drivers/gpu/drm/bridge, branch linux-5.13.y

drm/bridge: nwl-dsi: Avoid potential multiplication overflow on 32-bit

2021-09-18T11:42:03Z

[ Upstream commit 47956bc86ee4e8530cac386a04f62a6095f7afbe ] As nwl_dsi.lanes is u32, and NSEC_PER_SEC is 1000000000L, the second multiplication in dsi->lanes * 8 * NSEC_PER_SEC will overflow on a 32-bit platform. Fix this by making the constant unsigned long long, forcing 64-bit arithmetic. As iMX8 is arm64, this driver is currently used on 64-bit platforms only, where long is 64-bit, so this cannot happen. But the issue will start to happen when the driver is reused for a 32-bit SoC (e.g. i.MX7ULP), or when code is copied for a new driver. Signed-off-by: Geert Uytterhoeven Reviewed-by: Fabio Estevam Reviewed-by: Laurent Pinchart Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/ebb82941a86b4e35c4fcfb1ef5a5cfad7c1fceab.1626255956.git.geert+renesas@glider.be Signed-off-by: Sasha Levin

drm: bridge: cdns-mhdp8546: Fix PM reference leak in

2021-07-19T08:04:34Z

[ Upstream commit f674555ee5444c8987dfea0922f1cf6bf0c12847 ] pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to putting operation will result in reference leak here. Fix it by replacing it with pm_runtime_resume_and_get to keep usage counter balanced. Reported-by: Hulk Robot Signed-off-by: Yu Kuai Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20210531135622.3348252-1-yukuai3@huawei.com Signed-off-by: Sasha Levin

drm/bridge: cdns: Fix PM reference leak in cdns_dsi_transfer()

2021-07-19T08:04:33Z

[ Upstream commit 33f90f27e1c5ccd648d3e78a1c28be9ee8791cf1 ] pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to putting operation will result in reference leak here. Fix it by replacing it with pm_runtime_resume_and_get to keep usage counter balanced. Reported-by: Hulk Robot Signed-off-by: Zou Wei Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/1621840862-106024-1-git-send-email-zou_wei@huawei.com Signed-off-by: Sasha Levin

drm/bridge: lt9611: Add missing MODULE_DEVICE_TABLE

2021-07-19T08:04:31Z

[ Upstream commit 8d0b1fe81e18eb66a2d4406386760795fe0d77d9 ] This patch adds missing MODULE_DEVICE_TABLE definition which generates correct modalias for automatic loading of this driver when it is built as an external module. Reported-by: Hulk Robot Signed-off-by: Zou Wei Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/1620801955-19188-1-git-send-email-zou_wei@huawei.com Signed-off-by: Sasha Levin

drm/bridge: nwl-dsi: Force a full modeset when crtc_state->active is changed to be true

2021-07-19T08:04:30Z

[ Upstream commit 3afb2a28fa2404d11cce1956a003f2aaca4da421 ] This patch replaces ->mode_fixup() with ->atomic_check() so that a full modeset can be requested from there when crtc_state->active is changed to be true(which implies only connector's DPMS is brought out of "Off" status, though not necessarily). Bridge functions are added or changed to accommodate the ->atomic_check() callback. That full modeset is needed by the up-coming patch which gets MIPI DSI controller and PHY ready in ->mode_set(), because it makes sure ->mode_set() and ->atomic_disable() are called in pairs. Cc: Andrzej Hajda Cc: Neil Armstrong Cc: Robert Foss Cc: Laurent Pinchart Cc: Jonas Karlman Cc: Jernej Skrabec Cc: David Airlie Cc: Daniel Vetter Cc: Guido Günther Cc: Robert Chiras Cc: NXP Linux Team Signed-off-by: Liu Ying Reviewed-by: Neil Armstrong Signed-off-by: Neil Armstrong Link: https://patchwork.freedesktop.org/patch/msgid/1619170003-4817-2-git-send-email-victor.liu@nxp.com Signed-off-by: Sasha Levin

drm/bridge: fix LONTIUM_LT8912B dependencies

2021-07-14T15:06:55Z

[ Upstream commit 660729e494b6ee64feb97b41f3092c32a41c7dae ] LONTIUM_LT8912B uses "drm_display_mode_to_videomode" from DRM framework that needs VIDEOMODE_HELPERS to be enabled. Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") Reported-by: Michal Suchánek Signed-off-by: Adrien Grassein Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20210504220207.4004511-1-adrien.grassein@gmail.com Signed-off-by: Sasha Levin

drm/bridge: anx7625: Fix power on delay

2021-07-14T15:06:55Z

[ Upstream commit 1fcf24fb07e254ca69001ab14adc8cf567127c44 ] >From anx7625 spec, the delay between powering on power supplies and gpio should be larger than 10ms. Fixes: 6c744983004e ("drm/bridge: anx7625: disable regulators when power off") Signed-off-by: Hsin-Yi Wang Reviewed-by: Neil Armstrong Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20210428115116.931328-1-hsinyi@chromium.org Signed-off-by: Sasha Levin

drm/bridge/sii8620: fix dependency on extcon

2021-07-14T15:06:55Z

[ Upstream commit 08319adbdde15ef7cee1970336f63461254baa2a ] The DRM_SIL_SII8620 kconfig has a weak `imply` dependency on EXTCON, which causes issues when sii8620 is built as a builtin and EXTCON is built as a module. The symptoms are 'undefined reference' errors caused by the symbols in EXTCON not being available to the sii8620 driver. Fixes: 688838442147 ("drm/bridge/sii8620: use micro-USB cable detection logic to detect MHL") Reported-by: kernel test robot Signed-off-by: Robert Foss Reviewed-by: Randy Dunlap Link: https://patchwork.freedesktop.org/patch/msgid/20210419090124.153560-1-robert.foss@linaro.org Signed-off-by: Sasha Levin

Merge tag 'drm-misc-next-fixes-2021-04-22' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2021-04-23T03:53:07Z

A few fixes for the next merge window, with some build fixes for anx7625 and lt8912b bridges, incorrect error handling for lt8912b and TTM, and one fix for TTM page limit accounting. Signed-off-by: Dave Airlie From: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20210422163329.dvbuwre3akwdmzjt@gilmour

drm/bridge: lt8912b: fix incorrect handling of of_* return values

2021-04-16T15:12:51Z

A static analysis shows several issues in the driver code at probing time. DT parsing errors were bad handled and could lead to bugs: - Bad error detection; - Bad release of resources Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") Reported-by: Dan Carpenter Suggested-by: Dan Carpenter Signed-off-by: Adrien Grassein Reviewed-by: Andrzej Hajda Reviewed-by: Dan Carpenter Link: https://patchwork.freedesktop.org/patch/msgid/20210415183639.1487-1-rdunlap@infradead.org Signed-off-by: Robert Foss