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>

diff --git a/drivers/phy/phy-exynos-mipi-video.c b/drivers/phy/phy-exynos-mipi-video.c
index 2a54caba93b4021a5b48c44100ec42e9baf45da4..d4f5d8e6afbfeae62f64fd4aedf65fe8d68ae3e6 100644 (file)
--- a/drivers/phy/phy-exynos-mipi-video.c
+++ b/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);