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drm/fsl-dcu: update all registers on flush

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Use the UPDATE_MODE READREG bit to initiate a register transfer
on flush. This makes sure that we flush all registers only once
for all planes.

Signed-off-by: Stefan Agner <stefan@agner.ch>
This commit is contained in:
Stefan Agner 2016-09-05 19:05:12 -07:00
parent 34a515d27c
commit 93daeeca2c
2 changed files with 5 additions and 5 deletions
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5
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c
View File

@ -25,8 +25,13 @@
static void fsl_dcu_drm_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
struct drm_device *dev = crtc->dev;
struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
struct drm_pending_vblank_event *event = crtc->state->event;
regmap_write(fsl_dev->regmap,
DCU_UPDATE_MODE, DCU_UPDATE_MODE_READREG);
if (event) {
crtc->state->event = NULL;

5
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c
View File

@ -160,11 +160,6 @@ static void fsl_dcu_drm_plane_atomic_update(struct drm_plane *plane,
DCU_LAYER_POST_SKIP(0) |
DCU_LAYER_PRE_SKIP(0));
}
regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
DCU_MODE_DCU_MODE_MASK,
DCU_MODE_DCU_MODE(DCU_MODE_NORMAL));
regmap_write(fsl_dev->regmap,
DCU_UPDATE_MODE, DCU_UPDATE_MODE_READREG);
return;
}