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drm/exynos: add exynos specific .atomic_commit()

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exynos needs to update planes with the crtc enabled (mainly for the FIMD
case) so this specific atomic commit changes the order of
drm_atomic_helper_commit_modeset_enables() and
drm_atomic_helper_commit_planes() to commit planes after we enable crtc
and encoders.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Gustavo Padovan 2015-06-01 12:04:52 -03:00 committed by Inki Dae
parent 3fc4867c5d
commit d6562a291e
1 changed files with 32 additions and 1 deletions
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33
drivers/gpu/drm/exynos/exynos_drm_fb.c
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@ -16,6 +16,7 @@
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <uapi/drm/exynos_drm.h>
@ -270,7 +271,37 @@ static int exynos_atomic_commit(struct drm_device *dev,
struct drm_atomic_state *state,
bool async)
{
return drm_atomic_helper_commit(dev, state, false);
int ret;
ret = drm_atomic_helper_prepare_planes(dev, state);
if (ret)
return ret;
/* This is the point of no return */
drm_atomic_helper_swap_state(dev, state);
drm_atomic_helper_commit_modeset_disables(dev, state);
drm_atomic_helper_commit_modeset_enables(dev, state);
/*
* Exynos can't update planes with CRTCs and encoders disabled,
* its updates routines, specially for FIMD, requires the clocks
* to be enabled. So it is necessary to handle the modeset operations
* *before* the commit_planes() step, this way it will always
* have the relevant clocks enabled to perform the update.
*/
drm_atomic_helper_commit_planes(dev, state);
drm_atomic_helper_wait_for_vblanks(dev, state);
drm_atomic_helper_cleanup_planes(dev, state);
drm_atomic_state_free(state);
return 0;
}
static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = {