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drm/arm/mali-dp: Add a loop around the second set CVAL and try 5 times

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This patch trying to fix monitor freeze issue caused by drm error
'flip_done timed out' on LS1028A platform. this set try is make a loop
around the second setting CVAL and try like 5 times before giveing up.

Signed-off-by: Wen He <wen.he_1@nxp.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
This commit is contained in:
Wen He 2019-05-08 10:58:18 +00:00 committed by Liviu Dudau
parent a260e0b847
commit 6a88e0c148
1 changed files with 12 additions and 1 deletions
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13
drivers/gpu/drm/arm/malidp_drv.c
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@ -192,6 +192,7 @@ static void malidp_atomic_commit_hw_done(struct drm_atomic_state *state)
{
struct drm_device *drm = state->dev;
struct malidp_drm *malidp = drm->dev_private;
int loop = 5;
malidp->event = malidp->crtc.state->event;
malidp->crtc.state->event = NULL;
@ -206,8 +207,18 @@ static void malidp_atomic_commit_hw_done(struct drm_atomic_state *state)
drm_crtc_vblank_get(&malidp->crtc);
/* only set config_valid if the CRTC is enabled */
if (malidp_set_and_wait_config_valid(drm) < 0)
if (malidp_set_and_wait_config_valid(drm) < 0) {
/*
* make a loop around the second CVAL setting and
* try 5 times before giving up.
*/
while (loop--) {
if (!malidp_set_and_wait_config_valid(drm))
break;
}
DRM_DEBUG_DRIVER("timed out waiting for updated configuration\n");
}
} else if (malidp->event) {
/* CRTC inactive means vblank IRQ is disabled, send event directly */
spin_lock_irq(&drm->event_lock);