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imx-drm: imx-dp: when disabling the DP foreground channel, wait until the DP background channel is finished before disabling the IDMAC channel 

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Philipp Zabel 2014-04-14 23:53:21 +02:00 committed by Russell King
parent 285bbb018f
commit 216ddd608f
1 changed files with 3 additions and 0 deletions
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3
drivers/staging/imx-drm/ipu-v3/ipu-dp.c
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@ -277,6 +277,9 @@ void ipu_dp_disable_channel(struct ipu_dp *dp)
writel(0, flow->base + DP_FG_POS);
ipu_srm_dp_sync_update(priv->ipu);
if (ipu_idmac_channel_busy(priv->ipu, IPUV3_CHANNEL_MEM_BG_SYNC))
ipu_wait_interrupt(priv->ipu, IPU_IRQ_DP_SF_END, 50);
mutex_unlock(&priv->mutex);
}
EXPORT_SYMBOL_GPL(ipu_dp_disable_channel);