[PATCH v4 2/3] drm: exynos: hdmi: use hdmiphy as PHY

[Rahul Sharma]

From: Tomasz Stanislawski <t.stanisl...@samsung.com>

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 at samsung.com>
Signed-off-by: Rahul Sharma <Rahul.Sharma at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_hdmi.c |   11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c 
b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 9a6d652..ef1cdd0 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -36,6 +36,7 @@
 #include <linux/i2c.h>
 #include <linux/of_gpio.h>
 #include <linux/hdmi.h>
+#include <linux/phy/phy.h>

 #include <drm/exynos_drm.h>

@@ -74,8 +75,8 @@ struct hdmi_resources {
        struct clk                      *sclk_hdmi;
        struct clk                      *sclk_pixel;
        struct clk                      *sclk_hdmiphy;
-       struct clk                      *hdmiphy;
        struct clk                      *mout_hdmi;
+       struct phy                      *hdmiphy;
        struct regulator_bulk_data      *regul_bulk;
        int                             regul_count;
 };
@@ -1854,7 +1855,7 @@ static void hdmi_poweron(struct exynos_drm_display 
*display)
        if (regulator_bulk_enable(res->regul_count, res->regul_bulk))
                DRM_DEBUG_KMS("failed to enable regulator bulk\n");

-       clk_prepare_enable(res->hdmiphy);
+       phy_power_on(res->hdmiphy);
        clk_prepare_enable(res->hdmi);
        clk_prepare_enable(res->sclk_hdmi);

@@ -1881,7 +1882,7 @@ static void hdmi_poweroff(struct exynos_drm_display 
*display)

        clk_disable_unprepare(res->sclk_hdmi);
        clk_disable_unprepare(res->hdmi);
-       clk_disable_unprepare(res->hdmiphy);
+       phy_power_off(res->hdmiphy);
        regulator_bulk_disable(res->regul_count, res->regul_bulk);

        pm_runtime_put_sync(hdata->dev);
@@ -1977,9 +1978,9 @@ 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;
        }
        res->mout_hdmi = devm_clk_get(dev, "mout_hdmi");
-- 
1.7.9.5