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authorTomi Valkeinen <tomi.valkeinen@ti.com>2014-04-02 10:37:06 +0200
committerTomi Valkeinen <tomi.valkeinen@ti.com>2014-04-14 11:34:14 +0200
commit2ec8e3787ae6957f738bb133e755213b9d7c066e (patch)
tree47ec00c3ca196eeea817c8eab277f1952dbd973b /drivers/of/Makefile
parentLinux 3.15-rc1 (diff)
downloadlinux-2ec8e3787ae6957f738bb133e755213b9d7c066e.tar.xz
linux-2ec8e3787ae6957f738bb133e755213b9d7c066e.zip
drm/omap: fix output enable/disable sequence
At the moment it's quite easy to get the following errors when the HDMI output is enabled or disabled: [drm:omap_crtc_error_irq] *ERROR* tv: errors: 00008000 The reason for the errors is that the omapdrm driver doesn't properly handle the sync-lost irqs that happen when enabling the DIGIT crtc, which is used for HDMI and analog TV. The driver does disable the sync-lost irq properly, but it fails to wait until the output has been fully enabled (i.e. the first vsync), so the sync-lost errors are still seen occasionally. This patch makes the omapdrm act the same way as the omapfb does: - When enabling a display, we'll wait for the first vsync. - When disabling a display, we'll wait for framedone if available, or odd and even vsyncs. These changes make sure the output is fully enabled or disabled at the end of the function. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reported-by: Sanjay Singh Rawat <sanjay.rawat@linaro.org> Reviewed-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/of/Makefile')
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