[PATCH V4 01/10] drm/exynos: Move DP setup out of hotplug workqueue

[Ajay Kumar <ajaykumar.rs@samsung.com>]

Move the DP training and video enable from the hotplug handler into
a seperate function and call the same during dpms ON.

With existing code, DP HPD should be generated just few ms before
calling enable_irq in dp_poweron.

This patch removes that stringent time constraint.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_dp_core.c |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index 5e05dbc..96b4e82 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -875,10 +875,18 @@ static irqreturn_t exynos_dp_irq_handler(int irq, void *arg)
 static void exynos_dp_hotplug(struct work_struct *work)
 {
 	struct exynos_dp_device *dp;
-	int ret;
 
 	dp = container_of(work, struct exynos_dp_device, hotplug_work);
 
+	if (dp->drm_dev)
+		drm_helper_hpd_irq_event(dp->drm_dev);
+}
+
+static void exynos_dp_setup(void *in_ctx)
+{
+	struct exynos_dp_device *dp = in_ctx;
+	int ret;
+
 	ret = exynos_dp_detect_hpd(dp);
 	if (ret) {
 		/* Cable has been disconnected, we're done */
@@ -1059,6 +1067,7 @@ static void exynos_dp_poweron(struct exynos_dp_device *dp)
 	exynos_dp_phy_init(dp);
 	exynos_dp_init_dp(dp);
 	enable_irq(dp->irq);
+	exynos_dp_setup(dp);
 }
 
 static void exynos_dp_poweroff(struct exynos_dp_device *dp)
-- 
1.7.9.5