In the DT data we model the TFP410 chip and the DVI connector. For the
moment we have only 1 driver to handle those both.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
drivers/video/omap2/displays/panel-tfp410.c | 71 +++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
diff --git a/drivers/video/omap2/displays/panel-tfp410.c b/drivers/video/omap2/displays/panel-tfp410.c
index a225ea1..a087489c 100644
--- a/drivers/video/omap2/displays/panel-tfp410.c
+++ b/drivers/video/omap2/displays/panel-tfp410.c
@@ -24,6 +24,8 @@
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <drm/drm_edid.h>
+#include <linux/of_gpio.h>
+#include <linux/of_i2c.h>
#include <video/omap-panel-tfp410.h>
@@ -112,6 +114,63 @@ static int tfp410_probe_pdata(struct platform_device *pdev)
return 0;
}
+static int tfp410_probe_of(struct platform_device *pdev)
+{
+ struct device_node *node = pdev->dev.of_node;
+ struct panel_drv_data *ddata = dev_get_drvdata(&pdev->dev);
+ struct device_node *adapter_node;
+ struct i2c_adapter *adapter;
+ int r, gpio, datalines;
+
+ ddata->name = node->name;
+
+ node = of_parse_phandle(node, "video-source", 0);
+ if (!node) {
+ dev_err(&pdev->dev, "failed to parse video source\n");
+ return -ENODEV;
+ }
+
+ gpio = of_get_gpio(node, 0);
+
+ if (gpio_is_valid(gpio)) {
+ r = devm_gpio_request_one(&pdev->dev, gpio,
+ GPIOF_OUT_INIT_LOW, "tfp410 pd");
+ if (r) {
+ dev_err(&pdev->dev, "Failed to request PD GPIO %d\n",
+ gpio);
+ return r;
+ }
+
+ ddata->pd_gpio = gpio;
+ } else if (gpio == -ENOENT) {
+ ddata->pd_gpio = -1;
+ } else {
+ dev_err(&pdev->dev, "failed to parse PD gpio\n");
+ return gpio;
+ }
+
+ r = of_property_read_u32(node, "data-lines", &datalines);
+ if (r) {
+ dev_err(&pdev->dev, "failed to parse datalines");
+ return r;
+ }
+
+ ddata->data_lines = datalines;
+
+ adapter_node = of_parse_phandle(node, "i2c-bus", 0);
+ if (adapter_node) {
+ adapter = of_find_i2c_adapter_by_node(adapter_node);
+ if (adapter == NULL) {
+ dev_err(&pdev->dev, "failed to parse i2c-bus\n");
+ return -EINVAL;
+ }
+
+ ddata->i2c_adapter = adapter;
+ }
+
+ return 0;
+}
+
static int tfp410_probe(struct platform_device *pdev)
{
struct tfp410_platform_data *pdata = dev_get_platdata(&pdev->dev);
@@ -131,6 +190,10 @@ static int tfp410_probe(struct platform_device *pdev)
r = tfp410_probe_pdata(pdev);
if (r)
return r;
+ } else if (pdev->dev.of_node) {
+ r = tfp410_probe_of(pdev);
+ if (r)
+ return r;
} else {
return -ENODEV;
}
@@ -380,12 +443,20 @@ static struct omap_dss_driver tfp410_driver = {
.detect = tfp410_detect,
};
+static const struct of_device_id tfp410_of_match[] = {
+ {
+ .compatible = "ti,dvi_connector",
+ },
+ {},
+};
+
static struct platform_driver tfp410_platform_driver = {
.probe = tfp410_probe,
.remove = __exit_p(tfp410_remove),
.driver = {
.name = "tfp410",
.owner = THIS_MODULE,
+ .of_match_table = tfp410_of_match,
},
};
--
1.7.10.4
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