OMAPDSS: acx565akm: Add DT support

Add DT support for panel-sony-acx565akm

Signed-off-by: Sebastian Reichel <sre@debian.org>
[tomi.valkeinen@ti.com: some modifications]
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>

1 files changed, 32 insertions, 1 deletions

diff --git a/drivers/video/omap2/displays-new/panel-sony-acx565akm.c b/drivers/video/omap2/displays-new/panel-sony-acx565akm.c
index 8e97d06921ff..906220c20186 100644
--- a/drivers/video/omap2/displays-new/panel-sony-acx565akm.c
+++ b/drivers/video/omap2/displays-new/panel-sony-acx565akm.c
@@ -30,6 +30,8 @@
 #include <linux/backlight.h>
 #include <linux/fb.h>
 #include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
 
 #include <video/omapdss.h>
 #include <video/omap-panel-data.h>
@@ -547,7 +549,9 @@ static int acx565akm_panel_power_on(struct omap_dss_device *dssdev)
         dev_dbg(&ddata->spi->dev, "%s\n", __func__);
 
         in->ops.sdi->set_timings(in, &ddata->videomode);
-        in->ops.sdi->set_datapairs(in, ddata->datapairs);
+
+        if (ddata->datapairs > 0)
+                in->ops.sdi->set_datapairs(in, ddata->datapairs);
 
         r = in->ops.sdi->enable(in);
         if (r) {
@@ -726,6 +730,22 @@ static int acx565akm_probe_pdata(struct spi_device *spi)
         return 0;
 }
 
+static int acx565akm_probe_of(struct spi_device *spi)
+{
+        struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
+        struct device_node *np = spi->dev.of_node;
+
+        ddata->reset_gpio = of_get_named_gpio(np, "reset-gpios", 0);
+
+        ddata->in = omapdss_of_find_source_for_first_ep(np);
+        if (IS_ERR(ddata->in)) {
+                dev_err(&spi->dev, "failed to find video source\n");
+                return PTR_ERR(ddata->in);
+        }
+
+        return 0;
+}
+
 static int acx565akm_probe(struct spi_device *spi)
 {
         struct panel_drv_data *ddata;
@@ -753,7 +773,12 @@ static int acx565akm_probe(struct spi_device *spi)
                 r = acx565akm_probe_pdata(spi);
                 if (r)
                         return r;
+        } else if (spi->dev.of_node) {
+                r = acx565akm_probe_of(spi);
+                if (r)
+                        return r;
         } else {
+                dev_err(&spi->dev, "platform data missing!\n");
                 return -ENODEV;
         }
 
@@ -864,10 +889,16 @@ static int acx565akm_remove(struct spi_device *spi)
         return 0;
 }
 
+static const struct of_device_id acx565akm_of_match[] = {
+        { .compatible = "omapdss,sony,acx565akm", },
+        {},
+};
+
 static struct spi_driver acx565akm_driver = {
         .driver = {
                 .name   = "acx565akm",
                 .owner  = THIS_MODULE,
+                .of_match_table = acx565akm_of_match,
         },
         .probe  = acx565akm_probe,
         .remove = acx565akm_remove,