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Commit 22c4f428 authored by Rahul Sharma's avatar Rahul Sharma Committed by Inki Dae
Browse files

drm: exynos: hdmi: add support for exynos5 hdmi 



This patch adds support for exynos5 hdmi with device tree enabled.

Signed-off-by: default avatarRahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
parent 5a325071

drivers/gpu/drm/exynos/exynos_hdmi.c

+79 −4
Original line number Diff line number Diff line
@@ -32,6 +32,9 @@ 
#include <linux/pm_runtime.h>

#include <linux/clk.h>

#include <linux/regulator/consumer.h>

#include <linux/io.h>

#include <linux/of_gpio.h>

#include <plat/gpio-cfg.h>



#include <drm/exynos_drm.h>
@@ -2250,6 +2253,41 @@ void hdmi_attach_hdmiphy_client(struct i2c_client *hdmiphy) 
		hdmi_hdmiphy = hdmiphy;

}



#ifdef CONFIG_OF

static struct s5p_hdmi_platform_data *drm_hdmi_dt_parse_pdata

					(struct device *dev)

{

	struct device_node *np = dev->of_node;

	struct s5p_hdmi_platform_data *pd;

	enum of_gpio_flags flags;

	u32 value;



	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);

	if (!pd) {

		DRM_ERROR("memory allocation for pdata failed\n");

		goto err_data;

	}



	if (!of_find_property(np, "hpd-gpio", &value)) {

		DRM_ERROR("no hpd gpio property found\n");

		goto err_data;

	}



	pd->hpd_gpio = of_get_named_gpio_flags(np, "hpd-gpio", 0, &flags);



	return pd;



err_data:

	return NULL;

}

#else

static struct s5p_hdmi_platform_data *drm_hdmi_dt_parse_pdata

					(struct device *dev)

{

	return NULL;

}

#endif



static struct platform_device_id hdmi_driver_types[] = {

	{

		.name		= "s5pv210-hdmi",
@@ -2260,6 +2298,18 @@ static struct platform_device_id hdmi_driver_types[] = { 
	}, {

		.name		= "exynos4-hdmi14",

		.driver_data	= HDMI_TYPE14,

	}, {

		.name		= "exynos5-hdmi",

		.driver_data	= HDMI_TYPE14,

	}, {

		/* end node */

	}

};



static struct of_device_id hdmi_match_types[] = {

	{

		.compatible = "samsung,exynos5-hdmi",

		.data	= (void	*)HDMI_TYPE14,

	}, {

		/* end node */

	}
@@ -2276,7 +2326,16 @@ static int __devinit hdmi_probe(struct platform_device *pdev) 


	DRM_DEBUG_KMS("[%d]\n", __LINE__);



	if (pdev->dev.of_node) {

		pdata = drm_hdmi_dt_parse_pdata(dev);

		if (IS_ERR(pdata)) {

			DRM_ERROR("failed to parse dt\n");

			return PTR_ERR(pdata);

		}

	} else {

		pdata = pdev->dev.platform_data;

	}



	if (!pdata) {

		DRM_ERROR("no platform data specified\n");

		return -EINVAL;
@@ -2303,18 +2362,33 @@ static int __devinit hdmi_probe(struct platform_device *pdev) 


	platform_set_drvdata(pdev, drm_hdmi_ctx);



	if (dev->of_node) {

		const struct of_device_id *match;

		match = of_match_node(of_match_ptr(hdmi_match_types),

					pdev->dev.of_node);

		hdata->type = (enum hdmi_type)match->data;

	} else {

		hdata->type = (enum hdmi_type)platform_get_device_id

					(pdev)->driver_data;

	}



	hdata->hpd_gpio = pdata->hpd_gpio;

	hdata->dev = dev;



	ret = hdmi_resources_init(hdata);



	if (ret) {

		ret = -EINVAL;

		DRM_ERROR("hdmi_resources_init failed\n");

		goto err_data;

	}



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!res) {

		DRM_ERROR("failed to find registers\n");

		ret = -ENOENT;

		goto err_resource;

	}



	hdata->regs = devm_request_and_ioremap(&pdev->dev, res);

	if (!hdata->regs) {
@@ -2462,8 +2536,9 @@ struct platform_driver hdmi_driver = { 
	.remove		= __devexit_p(hdmi_remove),

	.id_table = hdmi_driver_types,

	.driver		= {

		.name	= "exynos4-hdmi",

		.name	= "exynos-hdmi",

		.owner	= THIS_MODULE,

		.pm	= &hdmi_pm_ops,

		.of_match_table = hdmi_match_types,

	},

};