diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_hdmi.c | 46 |
1 files changed, 25 insertions, 21 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 2275efe41acd..1440dfd535b7 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -1760,16 +1760,34 @@ static const struct component_ops hdmi_component_ops = { .unbind = hdmi_unbind, }; -static struct device_node *hdmi_legacy_ddc_dt_binding(struct device *dev) +static int hdmi_get_ddc_adapter(struct hdmi_context *hdata) { const char *compatible_str = "samsung,exynos4210-hdmiddc"; struct device_node *np; + struct i2c_adapter *adpt; np = of_find_compatible_node(NULL, NULL, compatible_str); if (np) - return of_get_next_parent(np); + np = of_get_next_parent(np); + else + np = of_parse_phandle(hdata->dev->of_node, "ddc", 0); + + if (!np) { + DRM_ERROR("Failed to find ddc node in device tree\n"); + return -ENODEV; + } + + adpt = of_find_i2c_adapter_by_node(np); + of_node_put(np); - return NULL; + if (!adpt) { + DRM_INFO("Failed to get ddc i2c adapter by node\n"); + return -EPROBE_DEFER; + } + + hdata->ddc_adpt = adpt; + + return 0; } static struct device_node *hdmi_legacy_phy_dt_binding(struct device *dev) @@ -1781,7 +1799,7 @@ static struct device_node *hdmi_legacy_phy_dt_binding(struct device *dev) static int hdmi_probe(struct platform_device *pdev) { - struct device_node *ddc_node, *phy_node; + struct device_node *phy_node; struct device *dev = &pdev->dev; struct hdmi_context *hdata; struct resource *res; @@ -1811,23 +1829,9 @@ static int hdmi_probe(struct platform_device *pdev) return ret; } - ddc_node = hdmi_legacy_ddc_dt_binding(dev); - if (ddc_node) - goto out_get_ddc_adpt; - - ddc_node = of_parse_phandle(dev->of_node, "ddc", 0); - if (!ddc_node) { - DRM_ERROR("Failed to find ddc node in device tree\n"); - return -ENODEV; - } - of_node_put(dev->of_node); - -out_get_ddc_adpt: - hdata->ddc_adpt = of_find_i2c_adapter_by_node(ddc_node); - if (!hdata->ddc_adpt) { - DRM_ERROR("Failed to get ddc i2c adapter by node\n"); - return -EPROBE_DEFER; - } + ret = hdmi_get_ddc_adapter(hdata); + if (ret) + return ret; phy_node = hdmi_legacy_phy_dt_binding(dev); if (phy_node) |