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gpu: drm: exynos_hdmi: Move PHY logic into single function 

Paring DT properties and getting PHY IO (memory mapped or I2C) in one
function.

Signed-off-by: Milo Kim <woogyom.kim@gmail.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Milo Kim 2016-08-31 15:14:26 +09:00 committed by Inki Dae
parent 1caa360ed9
commit b5413022fd
1 changed files with 33 additions and 30 deletions
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63
drivers/gpu/drm/exynos/exynos_hdmi.c
View File

@ -1790,16 +1790,44 @@ static int hdmi_get_ddc_adapter(struct hdmi_context *hdata)
return 0;
}
static struct device_node *hdmi_legacy_phy_dt_binding(struct device *dev)
static int hdmi_get_phy_io(struct hdmi_context *hdata)
{
const char *compatible_str = "samsung,exynos4212-hdmiphy";
struct device_node *np;
int ret = 0;
return of_find_compatible_node(NULL, NULL, compatible_str);
np = of_find_compatible_node(NULL, NULL, compatible_str);
if (!np) {
np = of_parse_phandle(hdata->dev->of_node, "phy", 0);
if (!np) {
DRM_ERROR("Failed to find hdmiphy node in device tree\n");
return -ENODEV;
}
}
if (hdata->drv_data->is_apb_phy) {
hdata->regs_hdmiphy = of_iomap(np, 0);
if (!hdata->regs_hdmiphy) {
DRM_ERROR("failed to ioremap hdmi phy\n");
ret = -ENOMEM;
goto out;
}
} else {
hdata->hdmiphy_port = of_find_i2c_device_by_node(np);
if (!hdata->hdmiphy_port) {
DRM_INFO("Failed to get hdmi phy i2c client\n");
ret = -EPROBE_DEFER;
goto out;
}
}
out:
of_node_put(np);
return ret;
}
static int hdmi_probe(struct platform_device *pdev)
{
struct device_node *phy_node;
struct device *dev = &pdev->dev;
struct hdmi_context *hdata;
struct resource *res;
@ -1833,34 +1861,9 @@ static int hdmi_probe(struct platform_device *pdev)
if (ret)
return ret;
phy_node = hdmi_legacy_phy_dt_binding(dev);
if (phy_node)
goto out_get_phy_port;
phy_node = of_parse_phandle(dev->of_node, "phy", 0);
if (!phy_node) {
DRM_ERROR("Failed to find hdmiphy node in device tree\n");
ret = -ENODEV;
ret = hdmi_get_phy_io(hdata);
if (ret)
goto err_ddc;
}
of_node_put(dev->of_node);
out_get_phy_port:
if (hdata->drv_data->is_apb_phy) {
hdata->regs_hdmiphy = of_iomap(phy_node, 0);
if (!hdata->regs_hdmiphy) {
DRM_ERROR("failed to ioremap hdmi phy\n");
ret = -ENOMEM;
goto err_ddc;
}
} else {
hdata->hdmiphy_port = of_find_i2c_device_by_node(phy_node);
if (!hdata->hdmiphy_port) {
DRM_ERROR("Failed to get hdmi phy i2c client\n");
ret = -EPROBE_DEFER;
goto err_ddc;
}
}
INIT_DELAYED_WORK(&hdata->hotplug_work, hdmi_hotplug_work_func);