drm: exynos: hdmi: use hdmiphy as PHY

The HDMIPHY (physical interface) is controlled by a single
bit in a power controller's regiter. It was implemented
as clock. It was a simple but effective hack.

This patch makes HDMI driver to control HDMIPHY via PHY interface.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Change-Id: I7e4729b61c7e71f7e411d423794420893f99f384

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 05b24f9..9b52b4f 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -34,6 +34,7 @@
 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/of_gpio.h>
+#include <linux/phy/phy.h>
 
 #include <drm/exynos_drm.h>
 
@@ -82,7 +83,7 @@ struct hdmi_resources {
        struct clk                      *sclk_hdmi;
        struct clk                      *sclk_pixel;
        struct clk                      *sclk_hdmiphy;
-       struct clk                      *hdmiphy;
+       struct phy                      *hdmiphy;
        struct regulator_bulk_data      *regul_bulk;
        int                             regul_count;
 };
@@ -1683,7 +1684,7 @@ static void hdmi_poweron(struct hdmi_context *hdata)
        if (regulator_bulk_enable(res->regul_count, res->regul_bulk))
                DRM_DEBUG_KMS("failed to enable regulator bulk\n");
 
-       clk_enable(res->hdmiphy);
+       phy_power_on(res->hdmiphy);
        clk_enable(res->hdmi);
        clk_enable(res->sclk_hdmi);
 
@@ -1708,7 +1709,7 @@ static void hdmi_poweroff(struct hdmi_context *hdata)
 
        clk_disable(res->sclk_hdmi);
        clk_disable(res->hdmi);
-       clk_disable(res->hdmiphy);
+       phy_power_off(res->hdmiphy);
        regulator_bulk_disable(res->regul_count, res->regul_bulk);
 
        mutex_lock(&hdata->hdmi_mutex);
@@ -1807,9 +1808,9 @@ static int hdmi_resources_init(struct hdmi_context *hdata)
                DRM_ERROR("failed to get clock 'sclk_hdmiphy'\n");
                goto fail;
        }
-       res->hdmiphy = devm_clk_get(dev, "hdmiphy");
+       res->hdmiphy = devm_phy_get(dev, "hdmiphy");
        if (IS_ERR(res->hdmiphy)) {
-               DRM_ERROR("failed to get clock 'hdmiphy'\n");
+               DRM_ERROR("failed to get phy 'hdmiphy'\n");
                goto fail;
        }