drm/exynos/hdmi: expose HDMI-PHY clock as pipeline clock

HDMI-PHY clock should be accessible from other components in the pipeline.

Change-Id: I17fa9cc3260ad33358dcf355e804de3ef4b4b19f
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index f3e3cd728f2a19d48d9e48ff890163214a1c3827..b5f437cd9d1765f60a4995af16900687babe0ddd 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -137,6 +137,7 @@ struct hdmi_context {
        struct clk                      **clk_muxes;
        struct regulator_bulk_data      regul_bulk[ARRAY_SIZE(supply)];
        struct regulator                *reg_hdmi_en;
+       struct exynos_drm_clk           phy_clk;
 };
 
 static inline struct hdmi_context *display_to_hdmi(struct exynos_drm_display *d)
@@ -1755,6 +1756,17 @@ static int hdmi_clk_init(struct hdmi_context *hdata)
        return ret;
 }
 
+static void hdmiphy_clk_enable(struct exynos_drm_clk *clk, bool enable)
+{
+       struct hdmi_context *hdata = container_of(clk, struct hdmi_context,
+                                                 phy_clk);
+
+       if (enable)
+               hdmiphy_enable(hdata);
+       else
+               hdmi_poweroff(hdata);
+}
+
 static int hdmi_bridge_init(struct hdmi_context *hdata)
 {
        struct device *dev = hdata->dev;
@@ -1854,9 +1866,20 @@ static int hdmi_bind(struct device *dev, struct device *master, void *data)
 {
        struct drm_device *drm_dev = data;
        struct hdmi_context *hdata = dev_get_drvdata(dev);
+       int ret;
 
        hdata->drm_dev = drm_dev;
 
+       hdata->phy_clk.enable = hdmiphy_clk_enable;
+
+       ret = exynos_drm_crtc_get_pipe_from_type(drm_dev, hdata->display.type);
+       if (ret >= 0) {
+               struct exynos_drm_private *private = drm_dev->dev_private;
+               struct exynos_drm_crtc *crtc = to_exynos_crtc(private->crtc[ret]);
+
+               crtc->pipe_clk = &hdata->phy_clk;
+       }
+
        return exynos_drm_create_enc_conn(drm_dev, &hdata->display);
 }