phy: exynos-mipi-video: Drop support for direct access to PMU

There is no need to support access to the PMU through memory ioresource
as now access through PMU regmap should only be used.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

drivers/phy/phy-exynos-mipi-video.c

@@ -22,9 +22,6 @@
 #include <linux/spinlock.h>
 #include <linux/mfd/syscon.h>
 
-/* MIPI_PHYn_CONTROL reg. offset (for base address from ioremap): n = 0..1 */
-#define EXYNOS_MIPI_PHY_CONTROL(n)	((n) * 4)
-
 enum exynos_mipi_phy_id {
 	EXYNOS_MIPI_PHY_ID_CSIS0,
 	EXYNOS_MIPI_PHY_ID_DSIM0,
@@ -50,7 +47,6 @@ static int __set_phy_state(struct exynos_mipi_video_phy *state,
 			enum exynos_mipi_phy_id id, unsigned int on)
 {
 	const unsigned int offset = EXYNOS4_MIPI_PHY_CONTROL(id / 2);
-	void __iomem *addr;
 	u32 val, reset;
 
 	if (is_mipi_dsim_phy_id(id))
@@ -60,35 +56,17 @@ static int __set_phy_state(struct exynos_mipi_video_phy *state,
 
 	spin_lock(&state->slock);
 
-	if (!IS_ERR(state->regmap)) {
-		regmap_read(state->regmap, offset, &val);
-		if (on)
-			val |= reset;
-		else
-			val &= ~reset;
-		regmap_write(state->regmap, offset, val);
-		if (on)
-			val |= EXYNOS4_MIPI_PHY_ENABLE;
-		else if (!(val & EXYNOS4_MIPI_PHY_RESET_MASK))
-			val &= ~EXYNOS4_MIPI_PHY_ENABLE;
-		regmap_write(state->regmap, offset, val);
-	} else {
-		addr = state->regs + EXYNOS_MIPI_PHY_CONTROL(id / 2);
-
-		val = readl(addr);
-		if (on)
-			val |= reset;
-		else
-			val &= ~reset;
-		writel(val, addr);
-		/* Clear ENABLE bit only if MRESETN, SRESETN bits are not set */
-		if (on)
-			val |= EXYNOS4_MIPI_PHY_ENABLE;
-		else if (!(val & EXYNOS4_MIPI_PHY_RESET_MASK))
-			val &= ~EXYNOS4_MIPI_PHY_ENABLE;
-
-		writel(val, addr);
-	}
+	regmap_read(state->regmap, offset, &val);
+	if (on)
+		val |= reset;
+	else
+		val &= ~reset;
+	regmap_write(state->regmap, offset, val);
+	if (on)
+		val |= EXYNOS4_MIPI_PHY_ENABLE;
+	else if (!(val & EXYNOS4_MIPI_PHY_RESET_MASK))
+		val &= ~EXYNOS4_MIPI_PHY_ENABLE;
+	regmap_write(state->regmap, offset, val);
 
 	spin_unlock(&state->slock);
 	return 0;
@@ -142,17 +120,8 @@ static int exynos_mipi_video_phy_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	state->regmap = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");
-	if (IS_ERR(state->regmap)) {
-		struct resource *res;
-
-		dev_info(dev, "regmap lookup failed: %ld\n",
-			 PTR_ERR(state->regmap));
-
-		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-		state->regs = devm_ioremap_resource(dev, res);
-		if (IS_ERR(state->regs))
-			return PTR_ERR(state->regs);
-	}
+	if (IS_ERR(state->regmap))
+		return PTR_ERR(state->regmap);
 
 	dev_set_drvdata(dev, state);
 	spin_lock_init(&state->slock);