kernel/drivers/gpu/drm/tegra/output.c, branch linux-6.9.y

drm/tegra: output: Fix missing i2c_put_adapter() in the error handling paths of tegra_output_probe()

2023-12-14T17:39:42Z

If an error occurs after a successful of_get_i2c_adapter_by_node() call, it should be undone by a corresponding i2c_put_adapter(). Add the missing i2c_put_adapter() call. Fixes: 9be7d864cf07 ("drm/tegra: Implement panel support") Signed-off-by: Christophe JAILLET Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/b38604178991e1f08b2cda219103be266be2d680.1693667005.git.christophe.jaillet@wanadoo.fr

drm/tegra: include drm/drm_edid.h only where needed

2023-12-14T17:21:32Z

Reduce the need for rebuilds when drm_edid.h is modified by including it only where needed. v2: Fix build (kernel test robot ) Signed-off-by: Jani Nikula Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20231213101951.3932273-1-jani.nikula@intel.com

drm/tegra: Include

2023-04-05T15:06:07Z

Include to get the contained declarations. No functional changes. Signed-off-by: Thomas Zimmermann Reviewed-by: Sui Jingfeng

drm/tegra: Include

2023-04-05T15:06:07Z

Include to get the contained declarations. No functional changes. Signed-off-by: Thomas Zimmermann Reviewed-by: Sui Jingfeng Reviewed-by: Sui Jingfeng

drm/tegra: Switch to using devm_fwnode_gpiod_get()

2022-11-25T15:14:58Z

devm_gpiod_get_from_of_node() is going away and GPIO consumers should use generic device/firmware node APIs to fetch GPIOs assigned to them. Switch the driver to use devm_fwnode_gpiod_get() instead. Signed-off-by: Dmitry Torokhov Signed-off-by: Thierry Reding

drm/tegra: output: Do not put OF node twice

2020-11-13T20:38:35Z

The original patch for commit 3d2e7aec7013 ("drm/tegra: output: Don't leak OF node on error") contained this hunk, but it was accidentally dropped during conflict resolution. This causes use-after-free errors on devices that use an I2C controller for HDMI DDC/CI on Tegra210 and later. Fixes: 3d2e7aec7013 ("drm/tegra: output: Don't leak OF node on error") Signed-off-by: Thierry Reding

Merge tag 'drm/tegra/for-5.10-rc1' of ssh://git.freedesktop.org/git/tegra/linux into drm-next

2020-09-22T22:37:12Z

drm/tegra: Changes for v5.10-rc1 This is a handful of patches that add bridge support for Tegra devices and fix a couple of minor issues. Signed-off-by: Dave Airlie From: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20200921121245.3953659-1-thierry.reding@gmail.com

drm/tegra: output: Support DRM bridges

2020-09-17T10:30:11Z

Newer Tegra device-trees will specify a video output graph which involves a bridge. This patch adds initial support for the DRM bridges to the Tegra DRM output. Acked-by: Sam Ravnborg Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

drm/tegra: output: Don't leak OF node on error

2020-09-17T10:29:39Z

The OF node should be put before returning error in tegra_output_probe(), otherwise node's refcount will be leaked. Reviewed-by: Laurent Pinchart Reviewed-by: Sam Ravnborg Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

drm/tegra: Properly reference count the DDC I2C adapter

2020-09-17T10:27:11Z

Use the of_get_i2c_adapter_by_node(), which is similar to the existing call to of_find_i2c_adapter_by_node() except that it also takes a reference to the owner module of the I2C adapter. In order to properly balance this out, call i2c_put_adapter() to release the reference to the I2C adapter and its owner module. For the special case where the DDC comes from the DPAUX, care must be taken to perform the same steps (i.e. get_device() and module_get()) so that the reference counts are all balanced. Signed-off-by: Thierry Reding