video: exynos_dp: move sw reset prioir to enabling sw defined function

The sw reset should be called prioir to enabling sw defined function,
according to datasheet.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

3 files changed, 8 insertions, 2 deletions

diff --git a/drivers/video/exynos/exynos_dp_core.c b/drivers/video/exynos/exynos_dp_core.c
index aabd214990d3..b446f7e42f2a 100644
--- a/drivers/video/exynos/exynos_dp_core.c
+++ b/drivers/video/exynos/exynos_dp_core.c
@@ -27,6 +27,8 @@ static int exynos_dp_init_dp(struct exynos_dp_device *dp)
 {
         exynos_dp_reset(dp);
 
+        exynos_dp_swreset(dp);
+
         /* SW defined function Normal operation */
         exynos_dp_enable_sw_function(dp);
 
diff --git a/drivers/video/exynos/exynos_dp_core.h b/drivers/video/exynos/exynos_dp_core.h
index 8f596b9e7b2b..1e0f998e0c9f 100644
--- a/drivers/video/exynos/exynos_dp_core.h
+++ b/drivers/video/exynos/exynos_dp_core.h
@@ -41,6 +41,7 @@ void exynos_dp_lane_swap(struct exynos_dp_device *dp, bool enable);
 void exynos_dp_init_analog_param(struct exynos_dp_device *dp);
 void exynos_dp_init_interrupt(struct exynos_dp_device *dp);
 void exynos_dp_reset(struct exynos_dp_device *dp);
+void exynos_dp_swreset(struct exynos_dp_device *dp);
 void exynos_dp_config_interrupt(struct exynos_dp_device *dp);
 u32 exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp);
 void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable);
diff --git a/drivers/video/exynos/exynos_dp_reg.c b/drivers/video/exynos/exynos_dp_reg.c
index 99bafb82537e..6ce76d56c3a1 100644
--- a/drivers/video/exynos/exynos_dp_reg.c
+++ b/drivers/video/exynos/exynos_dp_reg.c
@@ -109,8 +109,6 @@ void exynos_dp_reset(struct exynos_dp_device *dp)
 {
         u32 reg;
 
-        writel(RESET_DP_TX, dp->reg_base + EXYNOS_DP_TX_SW_RESET);
-
         exynos_dp_stop_video(dp);
         exynos_dp_enable_video_mute(dp, 0);
 
@@ -155,6 +153,11 @@ void exynos_dp_reset(struct exynos_dp_device *dp)
         exynos_dp_init_interrupt(dp);
 }
 
+void exynos_dp_swreset(struct exynos_dp_device *dp)
+{
+        writel(RESET_DP_TX, dp->reg_base + EXYNOS_DP_TX_SW_RESET);
+}
+
 void exynos_dp_config_interrupt(struct exynos_dp_device *dp)
 {
         u32 reg;