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drm: exynos: hdmi: add support for exynos5 hdmi 

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

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Rahul Sharma 2012-10-04 20:48:55 +05:30 committed by Inki Dae
parent 5a325071a0
commit 22c4f42897
1 changed files with 79 additions and 4 deletions
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83
drivers/gpu/drm/exynos/exynos_hdmi.c
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@ -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",
@ -2259,7 +2297,19 @@ static struct platform_device_id hdmi_driver_types[] = {
.driver_data = HDMI_TYPE13,
}, {
.name = "exynos4-hdmi14",
.driver_data = HDMI_TYPE14,
.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__);
pdata = pdev->dev.platform_data;
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);
hdata->type = (enum hdmi_type)platform_get_device_id
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,
},
};