This patch adds support for exynos5 hdmi with device tree enabled.
Signed-off-by: Rahul Sharma <rahul.sharma at samsung.com>
---
drivers/gpu/drm/exynos/exynos_hdmi.c | 83 ++++++++++++++++++++++++++++++++--
1 files changed, 79 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c
b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 89e798b..5caf49f 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -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,
},
};
--
1.7.0.4
