linux-kernel - [PATCH 14/20] video: msm: Write IRQ mask to MDP registers

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Message-Id: <1300485538-27479-1-git-send-email-carlv@codeaurora.org>
Date:	Fri, 18 Mar 2011 14:58:58 -0700
From:	Carl Vanderlip <carlv@...eaurora.org>
To:	David Brown <davidb@...eaurora.org>,
	Daniel Walker <dwalker@...o99.com>,
	Bryan Huntsman <bryanh@...eaurora.org>
Cc:	Brian Swetland <swetland@...gle.com>,
	Dima Zavin <dima@...roid.com>,
	Rebecca Schultz Zavin <rebecca@...roid.com>,
	Colin Cross <ccross@...roid.com>, linux-fbdev@...r.kernel.org,
	Carl Vanderlip <carlv@...eaurora.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 14/20] video: msm: Write IRQ mask to MDP registers

Writing MDP IRQ mask to the MDP IRQ register to fully disable interrupt.

Authors:
Dima Zavin <dima@...roid.com>
Rebecca Schultz Zavin <rebecca@...roid.com>
Colin Cross <ccross@...roid.com>

Signed-off-by: Carl Vanderlip <carlv@...eaurora.org>
---
 drivers/video/msm/mdp.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/video/msm/mdp.c b/drivers/video/msm/mdp.c
index bdca2d9..8184ca9 100644
--- a/drivers/video/msm/mdp.c
+++ b/drivers/video/msm/mdp.c
@@ -59,9 +59,13 @@ static int locked_enable_mdp_irq(struct mdp_info *mdp, uint32_t mask)
 		enable_irq(mdp->irq);
 	}
 
+	/* clear out any previous irqs for the requested mask*/
+	mdp_writel(mdp, mask, MDP_INTR_CLEAR);
+
 	/* update the irq mask to reflect the fact that the interrupt is
 	 * enabled */
 	mdp_irq_mask |= mask;
+	mdp_writel(mdp, mdp_irq_mask, MDP_INTR_ENABLE);
 	return 0;
 }
 
@@ -87,6 +91,8 @@ static int locked_disable_mdp_irq(struct mdp_info *mdp, uint32_t mask)
 	/* update the irq mask to reflect the fact that the interrupt is
 	 * disabled */
 	mdp_irq_mask &= ~(mask);
+	mdp_writel(mdp, mdp_irq_mask, MDP_INTR_ENABLE);
+
 	/* if no one is waiting on the interrupt, disable it */
 	if (!mdp_irq_mask) {
 		disable_irq_nosync(mdp->irq);
-- 
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.

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