[PATCH 17/133] [Jaunty SRU] ARM.imx51 Freescale:ENGR00109084 IPUv3: Add DP SRM updates when enabling/disabling DP_FG

[Brad Figg]

From: Liu Ying <b17645 at freescale.com>

Add DP SRM updates when enabling/disabling DP_FG to fix v4l2 dequeue
buffer failure issue after playing a video of two frames.

Signed-off-by: Liu Ying <b17645 at freescale.com>
Signed-off-by: Brad Figg <brad.figg at canonical.com>
---
 drivers/mxc/ipu3/ipu_disp.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/mxc/ipu3/ipu_disp.c b/drivers/mxc/ipu3/ipu_disp.c
index f0d1471..19d190b 100644
--- a/drivers/mxc/ipu3/ipu_disp.c
+++ b/drivers/mxc/ipu3/ipu_disp.c
@@ -495,6 +495,8 @@ void _ipu_dp_dc_enable(ipu_channel_t channel)
 		reg = __raw_readl(DP_COM_CONF(DP_SYNC));
 		__raw_writel(reg | DP_COM_CONF_FG_EN, DP_COM_CONF(DP_SYNC));
 
+		reg = __raw_readl(IPU_SRM_PRI2) | 0x8;
+		__raw_writel(reg, IPU_SRM_PRI2);
 		return;
 	}
 
@@ -576,6 +578,9 @@ void _ipu_dp_dc_disable(ipu_channel_t channel)
 		reg &= ~DP_COM_CONF_FG_EN;
 		__raw_writel(reg, DP_COM_CONF(DP_SYNC));
 
+		reg = __raw_readl(IPU_SRM_PRI2) | 0x8;
+		__raw_writel(reg, IPU_SRM_PRI2);
+
 		spin_unlock_irqrestore(&ipu_lock, lock_flags);
 
 		__raw_writel(IPUIRQ_2_MASK(IPU_IRQ_DP_SF_END),
-- 
1.6.0.4