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path: root/drivers/gpu/drm/tegra/dsi.c
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2014-08-04drm/tegra: dsi - Handle non-continuous clock flagAlexandre Courbot1-1/+2
Handle the MIPI_DSI_CLOCK_NONCONTINUOUS flag and only set TX-only clock behavior when this flag is present to allow panels requiring continuous clock mode to operate with this driver. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-06-05drm/tegra: Remove host1x drm_bus implementationThierry Reding1-3/+3
The DRM core can now cope with drivers that don't have an associated struct drm_bus, so the host1x implementation is no longer useful. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-06-05drm/tegra: dsi - Do not needlessly recompute pclkThierry Reding1-1/+0
In some cases the pixel clock used to not be correct, which is why it had to be recomputed. It turns out that the reason why it wasn't correct is that it was used wrongly. If used correctly there's not need for the recomputation. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-06-05drm/tegra: dc - Compute shift clock divider in output driversThierry Reding1-12/+31
The shift clock divider is highly dependent on the type of output, so push computation of it down into the output drivers. The old code used to work merely by accident. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-06-05drm/tegra: dsi - Reset controller on driver unloadThierry Reding1-0/+1
Assert the DSI controller's reset when the driver is unloaded to reduce power consumption and to put the controller into a known state for subsequent driver reloads. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-06-05drm/tegra: dsi - Fix typo when disabling controllerThierry Reding1-1/+1
When disabling the DSI controller, the code wasn't really doing what it was supposed to. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-06-05drm/tegra: dsi - Add enable guardThierry Reding1-0/+11
To prevent the enable or disable operations to potentially be run multiple times, add guards to return early when the output is already in the targetted state. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-06-05drm/tegra: dsi - Initialize proper packet sequencesThierry Reding1-4/+46
The packet sequencer needs to be programmed depending on the video mode of the attached peripheral. Add support for non-burst video modes with sync events (as opposed to sync pulses) and select either sequence depending on the video mode. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-06-05drm/tegra: dsi - Implement VDD supply supportThierry Reding1-0/+17
The DSI controllers are powered by a (typically 1.2V) regulator. Usually this is always on, so there was no need to support enabling or disabling it thus far. But in order not to consume any power when DSI is inactive, give the driver a chance to enable or disable the supply as needed. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-06-05drm/tegra: dsi - Remove unneeded codeThierry Reding1-85/+0
A bunch of registers are initialized to 0 upon during driver probe. It turns out that none of these are actually needed, so they can simply be dropped. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-06-05drm/tegra: dsi - Use internal pixel formatThierry Reding1-1/+33
The pixel format enumeration values used by the Tegra DSI controller don't match those defined by the DSI framework. Make sure to convert them to the internal format before writing it to the register. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-04-04drm/tegra: Relicense under GPL v2Thierry Reding1-17/+3
The majority of the code in this driver is licensed under the GPL v2, so relicense the rest under GPL v2 as well for consistency. Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2013-12-20drm/tegra: Relocate some output-specific codeThierry Reding1-7/+15
Some of the code in the CRTC's mode setting code is specific to the RGB output or needs to be called slightly differently depending on the type of output. Push that code down into the output drivers. Signed-off-by: Thierry Reding <treding@nvidia.com>
2013-12-20drm/tegra: Fix return value checkWei Yongjun1-2/+2
In case of error, the devm_ioremap_resource() function returns ERR_PTR() and never NULL. The NULL test in the return value check should therefore be replaced with IS_ERR(). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Thierry Reding <treding@nvidia.com>
2013-12-20drm/tegra: Add DSI supportThierry Reding1-0/+963
This commit adds support for both DSI outputs found on Tegra. Only very minimal functionality is implemented, so advanced features like ganged mode won't work. Due to the lack of other test hardware, some sections of the driver are hardcoded to work with Dalmore. Signed-off-by: Thierry Reding <treding@nvidia.com>