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drm/imx: ipuv3-plane: add IDMAC timeout warning 

ipu_plane_disable should never be called while the plane IDMAC channel
is active. The busy wait is just a safety net that should never time
out.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2017-02-24 18:38:08 +01:00
parent 815b02e3c0
commit 97c78f4d07
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/imx/ipuv3-plane.c
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@ -228,9 +228,15 @@ static void ipu_plane_enable(struct ipu_plane *ipu_plane)
void ipu_plane_disable(struct ipu_plane *ipu_plane, bool disable_dp_channel)
{
int ret;
DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50);
ret = ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50);
if (ret == -ETIMEDOUT) {
DRM_ERROR("[PLANE:%d] IDMAC timeout\n",
ipu_plane->base.base.id);
}
if (ipu_plane->dp && disable_dp_channel)
ipu_dp_disable_channel(ipu_plane->dp, false);