OMAPDSS: encoder-tpd12s015: Add DT support

Add DT support for encoder-tpd12s015.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>

1 files changed, 56 insertions, 0 deletions

diff --git a/drivers/video/omap2/displays-new/encoder-tpd12s015.c b/drivers/video/omap2/displays-new/encoder-tpd12s015.c
index d5c936cb217f..7e33686171e3 100644
--- a/drivers/video/omap2/displays-new/encoder-tpd12s015.c
+++ b/drivers/video/omap2/displays-new/encoder-tpd12s015.c
@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/gpio.h>
 #include <linux/platform_device.h>
+#include <linux/of_gpio.h>
 
 #include <video/omapdss.h>
 #include <video/omap-panel-data.h>
@@ -289,6 +290,49 @@ static int tpd_probe_pdata(struct platform_device *pdev)
         return 0;
 }
 
+static int tpd_probe_of(struct platform_device *pdev)
+{
+        struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+        struct device_node *node = pdev->dev.of_node;
+        struct omap_dss_device *in;
+        int gpio;
+
+        /* CT CP HPD GPIO */
+        gpio = of_get_gpio(node, 0);
+        if (!gpio_is_valid(gpio)) {
+                dev_err(&pdev->dev, "failed to parse CT CP HPD gpio\n");
+                return gpio;
+        }
+        ddata->ct_cp_hpd_gpio = gpio;
+
+        /* LS OE GPIO */
+        gpio = of_get_gpio(node, 1);
+        if (gpio_is_valid(gpio) || gpio == -ENOENT) {
+                ddata->ls_oe_gpio = gpio;
+        } else {
+                dev_err(&pdev->dev, "failed to parse LS OE gpio\n");
+                return gpio;
+        }
+
+        /* HPD GPIO */
+        gpio = of_get_gpio(node, 2);
+        if (!gpio_is_valid(gpio)) {
+                dev_err(&pdev->dev, "failed to parse HPD gpio\n");
+                return gpio;
+        }
+        ddata->hpd_gpio = gpio;
+
+        in = omapdss_of_find_source_for_first_ep(node);
+        if (IS_ERR(in)) {
+                dev_err(&pdev->dev, "failed to find video source\n");
+                return PTR_ERR(in);
+        }
+
+        ddata->in = in;
+
+        return 0;
+}
+
 static int tpd_probe(struct platform_device *pdev)
 {
         struct omap_dss_device *in, *dssdev;
@@ -307,6 +351,10 @@ static int tpd_probe(struct platform_device *pdev)
                 r = tpd_probe_pdata(pdev);
                 if (r)
                         return r;
+        } else if (pdev->dev.of_node) {
+                r = tpd_probe_of(pdev);
+                if (r)
+                        return r;
         } else {
                 return -ENODEV;
         }
@@ -379,12 +427,20 @@ static int __exit tpd_remove(struct platform_device *pdev)
         return 0;
 }
 
+static const struct of_device_id tpd_of_match[] = {
+        { .compatible = "omapdss,ti,tpd12s015", },
+        {},
+};
+
+MODULE_DEVICE_TABLE(of, tpd_of_match);
+
 static struct platform_driver tpd_driver = {
         .probe  = tpd_probe,
         .remove = __exit_p(tpd_remove),
         .driver = {
                 .name   = "tpd12s015",
                 .owner  = THIS_MODULE,
+                .of_match_table = tpd_of_match,
         },
 };