[PATCH 1/2] drm/exynos: hdmi: consider APB PHY

[Inki Dae]

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 at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_hdmi.c |   26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index e6ce363..b695398 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -63,6 +63,11 @@ 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;
@@ -197,6 +202,14 @@ 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[] = {
 	{
@@ -1959,10 +1972,10 @@ 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 */
 	}
@@ -1976,6 +1989,7 @@ 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)
@@ -1996,7 +2010,9 @@ 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;
@@ -2030,6 +2046,10 @@ 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) {
-- 
1.7.9.5