Paring DT properties and getting the I2C adapter in one function.
Cc: Kukjin Kim <kgene at kernel.org>
Cc: Krzysztof Kozlowski <k.kozlowski at samsung.com>
Cc: David Airlie <airlied at linux.ie>
Cc: Inki Dae <inki.dae at samsung.com>
Cc: Joonyoung Shim <jy0922.shim at samsung.com>
Cc: Seung-Woo Kim <sw0312.kim at samsung.com>
Cc: Kyungmin Park <kyungmin.park at samsung.com>
Cc: Rob Herring <robh+dt at kernel.org>
Cc: devicetree at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-samsung-soc at vger.kernel.org
Cc: linux-kernel at vger.kernel.org
Cc: dri-devel at lists.freedesktop.org
Signed-off-by: Milo Kim <woogyom.kim at gmail.com>
---
drivers/gpu/drm/exynos/exynos_hdmi.c | 46 ++++++++++++++++++++----------------
1 file changed, 25 insertions(+), 21 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c
b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 2275efe..8d99b5d 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;
+ }
- return NULL;
+ adpt = of_find_i2c_adapter_by_node(np);
+ if (!adpt) {
+ DRM_ERROR("Failed to get ddc i2c adapter by node\n");
+ of_node_put(np);
+ return -EPROBE_DEFER;
+ }
+
+ hdata->ddc_adpt = adpt;
+ of_node_put(np);
+
+ 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)
--
1.9.1
