[PATCH 4/7] drm/exynos: add support for exynos5420 hdmiphy

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Exynos5420 hdmiphy device is a platform device, unlike
predecessor SoCs where it used to be a I2C device. This
support is added to the hdmiphy driver.

Signed-off-by: Rahul Sharma <rahul.sharma@xxxxxxxxxxx>
---
 drivers/gpu/drm/exynos/exynos_hdmiphy.c |  224 ++++++++++++++++++++++++++++++-
 1 file changed, 221 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_hdmiphy.c b/drivers/gpu/drm/exynos/exynos_hdmiphy.c
index b1b8a0f..33e89d9 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmiphy.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmiphy.c
@@ -32,6 +32,7 @@ struct hdmiphy_context {
 
 	/* hdmiphy resources */
 	void __iomem		*phy_pow_ctrl_reg;
+	void __iomem		*regs;
 
 	struct hdmiphy_config	*confs;
 	unsigned int		nr_confs;
@@ -48,6 +49,135 @@ struct hdmiphy_drv_data {
 };
 
 /* list of all required phy config settings */
+static struct hdmiphy_config hdmiphy_5420_configs[] = {
+	{
+		.pixel_clock = 25200000,
+		.conf = {
+			0x01, 0x52, 0x3F, 0x55, 0x40, 0x01, 0x00, 0xC8,
+			0x82, 0xC8, 0xBD, 0xD8, 0x45, 0xA0, 0xAC, 0x80,
+			0x06, 0x80, 0x01, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0xF4, 0x24, 0x00, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 27000000,
+		.conf = {
+			0x01, 0xD1, 0x22, 0x51, 0x40, 0x08, 0xFC, 0xE0,
+			0x98, 0xE8, 0xCB, 0xD8, 0x45, 0xA0, 0xAC, 0x80,
+			0x06, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0xE4, 0x24, 0x00, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 27027000,
+		.conf = {
+			0x01, 0xD1, 0x2D, 0x72, 0x40, 0x64, 0x12, 0xC8,
+			0x43, 0xE8, 0x0E, 0xD9, 0x45, 0xA0, 0xAC, 0x80,
+			0x06, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0xE3, 0x24, 0x00, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 36000000,
+		.conf = {
+			0x01, 0x51, 0x2D, 0x55, 0x40, 0x40, 0x00, 0xC8,
+			0x02, 0xC8, 0x0E, 0xD9, 0x45, 0xA0, 0xAC, 0x80,
+			0x08, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0xAB, 0x24, 0x00, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 40000000,
+		.conf = {
+			0x01, 0xD1, 0x21, 0x31, 0x40, 0x3C, 0x28, 0xC8,
+			0x87, 0xE8, 0xC8, 0xD8, 0x45, 0xA0, 0xAC, 0x80,
+			0x08, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0x9A, 0x24, 0x00, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 65000000,
+		.conf = {
+			0x01, 0xD1, 0x36, 0x34, 0x40, 0x0C, 0x04, 0xC8,
+			0x82, 0xE8, 0x45, 0xD9, 0x45, 0xA0, 0xAC, 0x80,
+			0x08, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0xBD, 0x24, 0x01, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 71000000,
+		.conf = {
+			0x01, 0xD1, 0x3B, 0x35, 0x40, 0x0C, 0x04, 0xC8,
+			0x85, 0xE8, 0x63, 0xD9, 0x45, 0xA0, 0xAC, 0x80,
+			0x08, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0x57, 0x24, 0x00, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 74176000,
+		.conf = {
+			0x01, 0xD1, 0x1F, 0x10, 0x40, 0x5B, 0xEF, 0xC8,
+			0x81, 0xE8, 0xB9, 0xD8, 0x45, 0xA0, 0xAC, 0x80,
+			0x56, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0xA6, 0x24, 0x01, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 74250000,
+		.conf = {
+			0x01, 0xD1, 0x1F, 0x10, 0x40, 0x40, 0xF8, 0xC8,
+			0x81, 0xE8, 0xBA, 0xD8, 0x45, 0xA0, 0xAC, 0x80,
+			0x56, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0xA5, 0x24, 0x01, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 83500000,
+		.conf = {
+			0x01, 0xD1, 0x23, 0x11, 0x40, 0x0C, 0xFB, 0xC8,
+			0x85, 0xE8, 0xD1, 0xD8, 0x45, 0xA0, 0xAC, 0x80,
+			0x08, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0x4A, 0x24, 0x00, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 106500000,
+		.conf = {
+			0x01, 0xD1, 0x2C, 0x12, 0x40, 0x0C, 0x09, 0xC8,
+			0x84, 0xE8, 0x0A, 0xD9, 0x45, 0xA0, 0xAC, 0x80,
+			0x08, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0x73, 0x24, 0x01, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 108000000,
+		.conf = {
+			0x01, 0x51, 0x2D, 0x15, 0x40, 0x01, 0x00, 0xC8,
+			0x82, 0xC8, 0x0E, 0xD9, 0x45, 0xA0, 0xAC, 0x80,
+			0x08, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0xC7, 0x25, 0x03, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 146250000,
+		.conf = {
+			0x01, 0xD1, 0x3D, 0x15, 0x40, 0x18, 0xFD, 0xC8,
+			0x83, 0xE8, 0x6E, 0xD9, 0x45, 0xA0, 0xAC, 0x80,
+			0x08, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0x54, 0x24, 0x01, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
+		.pixel_clock = 148500000,
+		.conf = {
+			0x01, 0xD1, 0x1F, 0x00, 0x40, 0x40, 0xF8, 0xC8,
+			0x81, 0xE8, 0xBA, 0xD8, 0x45, 0xA0, 0xAC, 0x80,
+			0x66, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0x4B, 0x25, 0x03, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+};
+
 static struct hdmiphy_config hdmiphy_4212_configs[] = {
 	{
 		.pixel_clock = 25200000,
@@ -290,7 +420,8 @@ static int hdmiphy_reg_writeb(struct hdmiphy_context *hdata,
 			return 0;
 		return ret;
 	} else {
-		return -EINVAL;
+		writeb(value, hdata->regs + (reg_offset<<2));
+		return 0;
 	}
 }
 
@@ -309,7 +440,11 @@ static int hdmiphy_reg_write_buf(struct hdmiphy_context *hdata,
 			return 0;
 		return ret;
 	} else {
-		return -EINVAL;
+		int i;
+		for (i = 0; i < len; i++)
+			writeb(buf[i], hdata->regs +
+				((reg_offset + i)<<2));
+		return 0;
 	}
 }
 
@@ -457,6 +592,11 @@ int exynos_hdmiphy_conf_apply(struct device *dev)
 	return 0;
 }
 
+static struct hdmiphy_drv_data exynos5420_hdmiphy_drv_data = {
+	.confs = hdmiphy_5420_configs,
+	.count = ARRAY_SIZE(hdmiphy_5420_configs)
+};
+
 static struct hdmiphy_drv_data exynos4212_hdmiphy_drv_data = {
 	.confs = hdmiphy_4212_configs,
 	.count = ARRAY_SIZE(hdmiphy_4212_configs)
@@ -482,6 +622,67 @@ static struct of_device_id hdmiphy_i2c_device_match_types[] = {
 	}
 };
 
+static struct of_device_id hdmiphy_platform_device_match_types[] = {
+	{
+		.compatible = "samsung,exynos5420-hdmiphy",
+		.data	= &exynos5420_hdmiphy_drv_data,
+	}, {
+		/* end node */
+	}
+};
+
+static int hdmiphy_platform_device_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct hdmiphy_context *hdata;
+	struct hdmiphy_drv_data *drv;
+	struct resource *res;
+	const struct of_device_id *match;
+	int ret;
+
+	DRM_DEBUG_KMS("[%d]\n", __LINE__);
+
+	hdata = devm_kzalloc(dev, sizeof(*hdata), GFP_KERNEL);
+	if (!hdata) {
+		DRM_ERROR("failed to allocate hdmiphy context.\n");
+		return -ENOMEM;
+	}
+
+	match = of_match_node(of_match_ptr(
+		hdmiphy_platform_device_match_types),
+		dev->of_node);
+
+	if (match == NULL)
+		return -ENODEV;
+
+	drv = (struct hdmiphy_drv_data *)match->data;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		DRM_ERROR("failed to find phy registers\n");
+		return -ENOENT;
+	}
+
+	hdata->regs = devm_request_and_ioremap(&pdev->dev, res);
+	if (!hdata->regs) {
+		DRM_ERROR("failed to map registers\n");
+		return -ENXIO;
+	}
+
+	hdata->dev = dev;
+	hdata->confs = drv->confs;
+	hdata->nr_confs = drv->count;
+
+	platform_set_drvdata(pdev, hdata);
+	ret = hdmiphy_dt_parse_power_control(hdata);
+	if (ret) {
+		DRM_ERROR("failed to map hdmiphy pow control reg.\n");
+		return ret;
+	}
+
+	return 0;
+}
+
 static int hdmiphy_i2c_device_probe(struct i2c_client *client,
 	const struct i2c_device_id *id)
 {
@@ -538,18 +739,35 @@ struct i2c_driver hdmiphy_i2c_driver = {
 	.command		= NULL,
 };
 
+struct platform_driver hdmiphy_platform_driver = {
+	.driver = {
+		.name	= "exynos-hdmiphy",
+		.owner	= THIS_MODULE,
+		.of_match_table = of_match_ptr(
+				hdmiphy_platform_device_match_types),
+	},
+	.probe		= hdmiphy_platform_device_probe,
+};
+
 int exynos_hdmiphy_driver_register(void)
 {
 	int ret;
 
 	ret = i2c_add_driver(&hdmiphy_i2c_driver);
 	if (ret)
-		return ret;
+		goto err;
+
+	ret = platform_driver_register(&hdmiphy_platform_driver);
+	if (ret)
+		goto err;
 
 	return 0;
+err:
+	return ret;
 }
 
 void exynos_hdmiphy_driver_unregister(void)
 {
 	i2c_del_driver(&hdmiphy_i2c_driver);
+	platform_driver_unregister(&hdmiphy_platform_driver);
 }
-- 
1.7.10.4

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