[v3,1/2] video: exynos_dp: Reset and initialize DP before requesting irq

Commit Message

Jingoo Han Nov. 5, 2012, 7:43 a.m. UTC

If DP is not reset properly before kernel bootup(in bootloader code),
there can be few pending interrupts, and sometimes they invoke
DP irq handler as soon as the irq handler is registered in DP probe.
So, we make the DP driver more robust by resetting and
initializing DP at the earliest and then registering the irq handler.

Signed-off-by: Ajay Kumar <[e-mail]>
Signed-off-by: Jingoo Han <[e-mail]>
---
Tested with Exynos5250

 drivers/video/exynos/exynos_dp_core.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

Patch

diff --git a/drivers/video/exynos/exynos_dp_core.c b/drivers/video/exynos/exynos_dp_core.c
index d55470e..d241fd3 100644
--- a/drivers/video/exynos/exynos_dp_core.c
+++ b/drivers/video/exynos/exynos_dp_core.c
@@ -901,6 +901,12 @@  static int __devinit exynos_dp_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
+	dp->video_info = pdata->video_info;
+	if (pdata->phy_init)
+		pdata->phy_init();
+
+	exynos_dp_init_dp(dp);
+
 	ret = devm_request_irq(&pdev->dev, dp->irq, exynos_dp_irq_handler, 0,
 				"exynos-dp", dp);
 	if (ret) {
@@ -908,12 +914,6 @@  static int __devinit exynos_dp_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	dp->video_info = pdata->video_info;
-	if (pdata->phy_init)
-		pdata->phy_init();
-
-	exynos_dp_init_dp(dp);
-
 	ret = exynos_dp_detect_hpd(dp);
 	if (ret) {
 		dev_err(&pdev->dev, "unable to detect hpd\n");