kernel/linux.git/drivers/gpu/drm/sun4i, branch v4.9.79

drm/sun4i: Fix a return value in case of error

2017-11-30T08:39:10+00:00

[ Upstream commit 0f0861e31e3c59ca4bc1ec59d99260cfca79740e ] If 'sun4i_backend_drm_format_to_layer()' does not return 0, then 'val' is left unmodified. As it is not initialized either, the return value can be anything. It is likely that returning the error code was expected here. As the only caller of 'sun4i_backend_update_layer_formats()' does not check the return value, this fix is purely theorical. Signed-off-by: Christophe JAILLET Signed-off-by: Maxime Ripard Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

drm/sun4i: Implement drm_driver lastclose to restore fbdev console

2017-09-27T12:39:18+00:00

commit 2a596fc9d974bb040eda9ab70bf8756fcaaa6afe upstream. The drm_driver lastclose callback is called when the last userspace DRM client has closed. Call drm_fbdev_cma_restore_mode to restore the fbdev console otherwise the fbdev console will stop working. Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support") Tested-by: Olliver Schinagl Reviewed-by: Chen-Yu Tsai Signed-off-by: Jonathan Liu Signed-off-by: Maxime Ripard [net147@gmail.com: Backport to 4.9, minor context change] Signed-off-by: Jonathan Liu Signed-off-by: Greg Kroah-Hartman

drm/sun4i: Add compatible string for A31/A31s TCON (timing controller)

2017-04-12T10:41:15+00:00

commit 93a5ec14da24a8abbac5bcb953b45cc7a5d0198a upstream. The A31 TCON has mux controls for how TCON outputs are routed to the HDMI and MIPI DSI blocks. Since the A31s does not have MIPI DSI, it only has a mux for the HDMI controller input. This patch only adds support for the compatible strings. Actual support for the mux controls should be added with HDMI and MIPI DSI support. Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard Signed-off-by: Greg Kroah-Hartman

drm/sun4i: Add compatible strings for A31/A31s display pipelines

2017-04-12T10:41:15+00:00

commit 49c440e87cd6f547f93d0dc53571ae0e11d9ec8f upstream. The A31's display pipeline has 2 frontends, 2 backends, and 2 TCONs. It also has new display enhancement blocks, such as the DRC (Dynamic Range Controller), the DEU (Display Enhancement Unit), and the CMU (Color Management Unit). It supports HDMI, MIPI DSI, and 2 LCD/LVDS channels. The A31s display pipeline is almost the same, just without MIPI DSI. Only the TCON seems to be different, due to the missing mux for MIPI DSI. Add compatible strings for both of them. Signed-off-by: Chen-Yu Tsai Acked-by: Rob Herring Signed-off-by: Maxime Ripard Signed-off-by: Greg Kroah-Hartman

drm/sun4i: tcon: Move SoC specific quirks to a DT matched data structure

2017-04-12T10:41:15+00:00

commit 91ea2f29cba6a7fe035ea232e4f981211a9fce5d upstream. We already have some differences between the 2 supported SoCs. More will be added as we support other SoCs. To avoid bloating the probe function with even more conditionals, move the quirks to a separate data structure that's tied to the compatible string. Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

drm/sun4i: Propagate error to the caller

2016-11-07T15:09:35+00:00

If 'sun4i_layers_init()' returns an error, propagate it instead of returning -EINVAL unconditionally. Signed-off-by: Christophe JAILLET Reviewed-by: Gustavo Padovan Signed-off-by: Maxime Ripard

drm/sun4i: Fix error handling

2016-11-02T17:56:46+00:00

'sun4i_layers_init()' returns an error pointer in case of error, not NULL. So test it with IS_ERR. Signed-off-by: Christophe JAILLET Signed-off-by: Maxime Ripard

drm/sun4i: rgb: Remove the bridge enable/disable functions

2016-10-16T12:32:23+00:00

The atomic helpers already call the drm_bridge_enable on our behalf, there's no need to do it a second time. Reported-by: Sean Paul Reviewed-by: Sean Paul Signed-off-by: Maxime Ripard

drm/sun4i: rgb: Enable panel after controller

2016-10-16T12:32:23+00:00

The panel should be enabled after the controller so that we do not have visual glitches on the panel while the controller is setup. Similarly, the panel should be disabled before the controller. Signed-off-by: Jonathan Liu Reviewed-by: Sean Paul Signed-off-by: Maxime Ripard

Merge tag 'sunxi-drm-fixes-for-4.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into drm-next

2016-09-28T01:23:15+00:00

Allwinner sun4i DRM fixes for 4.9 A few fixes for the sun4i drm driver that range, including some fixes that might prevent multiple planes from working depending on the sequence where they are enabled. * tag 'sunxi-drm-fixes-for-4.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux: drm/sun4i: Fix the high buffer address mask drm/sun4i: tv: Check mode pointer drm/sun4i: Fix formats usable by the primary plane drm/sun4i: dotclock: Round to closest clock rate drm/sun4i: Fix sparse warnings drm/sun4i: dotclock: Allow divider = 127 drm/sun4i: dotclock: Fix clock rate read back calcation drm/sun4i: backend: remove redundant dev_err call in sun4i_backend_bind()