drm/exynos: hdmi: consider APB PHY

This patch returns error in case of using APB PHY.

Exynos5420 SoC and maybe later would use APB PHY instead of
I2C PHY so such case should be considered.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 0097032cd350b35a4c6781b908d3d15c434913bb..81e22aecd57229885750684a0d58a87893562e2d 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -64,6 +64,11 @@ enum hdmi_type {
        HDMI_TYPE14,
 };
 
+struct hdmi_driver_data {
+       unsigned int type;
+       unsigned int is_apb_phy:1;
+};
+
 struct hdmi_resources {
        struct clk                      *hdmi;
        struct clk                      *sclk_hdmi;
@@ -199,6 +204,14 @@ struct hdmiphy_config {
        u8 conf[32];
 };
 
+struct hdmi_driver_data exynos4212_hdmi_driver_data = {
+       .type   = HDMI_TYPE14,
+};
+
+struct hdmi_driver_data exynos5_hdmi_driver_data = {
+       .type   = HDMI_TYPE14,
+};
+
 /* list of phy config settings */
 static const struct hdmiphy_config hdmiphy_v13_configs[] = {
        {
@@ -2025,10 +2038,10 @@ err_data:
 static struct of_device_id hdmi_match_types[] = {
        {
                .compatible = "samsung,exynos5-hdmi",
-               .data   = (void *)HDMI_TYPE14,
+               .data = &exynos5_hdmi_driver_data,
        }, {
                .compatible = "samsung,exynos4212-hdmi",
-               .data   = (void *)HDMI_TYPE14,
+               .data = &exynos4212_hdmi_driver_data,
        }, {
                /* end node */
        }
@@ -2042,6 +2055,7 @@ static int hdmi_probe(struct platform_device *pdev)
        struct resource *res;
        const struct of_device_id *match;
        struct device_node *ddc_node, *phy_node;
+       struct hdmi_driver_data *drv_data;
        int ret;
 
         if (!dev->of_node)
@@ -2062,7 +2076,9 @@ static int hdmi_probe(struct platform_device *pdev)
        match = of_match_node(hdmi_match_types, dev->of_node);
        if (!match)
                return -ENODEV;
-       hdata->type = (enum hdmi_type)match->data;
+
+       drv_data = (struct hdmi_driver_data *)match->data;
+       hdata->type = drv_data->type;
 
        hdata->hpd_gpio = pdata->hpd_gpio;
        hdata->dev = dev;
@@ -2096,6 +2112,10 @@ static int hdmi_probe(struct platform_device *pdev)
                return -ENODEV;
        }
 
+       /* Not support APB PHY yet. */
+       if (drv_data->is_apb_phy)
+               return -EPERM;
+
        /* hdmiphy i2c driver */
        phy_node = of_parse_phandle(dev->of_node, "phy", 0);
        if (!phy_node) {