phy: exynos-dp-video: Kill exynos_dp_video_phy_pwr_isol function

If IS_ERR(state->regs) the .probe fails.
So IS_ERR(state->regs) test in exynos_dp_video_phy_pwr_isol() is not necessary.
exynos_dp_video_phy_pwr_isol() simply does a regmap_update_bits() call now,
just call regmap_update_bits() instead and return proper return value.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

1 files changed, 4 insertions, 20 deletions

diff --git a/drivers/phy/phy-exynos-dp-video.c b/drivers/phy/phy-exynos-dp-video.c
index f86cbe68ddaf..179cbf9451aa 100644
--- a/drivers/phy/phy-exynos-dp-video.c
+++ b/drivers/phy/phy-exynos-dp-video.c
@@ -30,28 +30,13 @@ struct exynos_dp_video_phy {
         const struct exynos_dp_video_phy_drvdata *drvdata;
 };
 
-static void exynos_dp_video_phy_pwr_isol(struct exynos_dp_video_phy *state,
-                                                        unsigned int on)
-{
-        unsigned int val;
-
-        if (IS_ERR(state->regs))
-                return;
-
-        val = on ? 0 : EXYNOS5_PHY_ENABLE;
-
-        regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset,
-                           EXYNOS5_PHY_ENABLE, val);
-}
-
 static int exynos_dp_video_phy_power_on(struct phy *phy)
 {
         struct exynos_dp_video_phy *state = phy_get_drvdata(phy);
 
         /* Disable power isolation on DP-PHY */
-        exynos_dp_video_phy_pwr_isol(state, 0);
-
-        return 0;
+        return regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset,
+                                  EXYNOS5_PHY_ENABLE, EXYNOS5_PHY_ENABLE);
 }
 
 static int exynos_dp_video_phy_power_off(struct phy *phy)
@@ -59,9 +44,8 @@ static int exynos_dp_video_phy_power_off(struct phy *phy)
         struct exynos_dp_video_phy *state = phy_get_drvdata(phy);
 
         /* Enable power isolation on DP-PHY */
-        exynos_dp_video_phy_pwr_isol(state, 1);
-
-        return 0;
+        return regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset,
+                                  EXYNOS5_PHY_ENABLE, 0);
 }
 
 static struct phy_ops exynos_dp_video_phy_ops = {