OMAPDSS: panel-dsi-cm: Add DT support

Add DT support for panel-dsi-cm.

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

diff --git a/drivers/video/omap2/displays-new/panel-dsi-cm.c b/drivers/video/omap2/displays-new/panel-dsi-cm.c
index b7baafe..a647e94 100644 (file)
--- a/drivers/video/omap2/displays-new/panel-dsi-cm.c
+++ b/drivers/video/omap2/displays-new/panel-dsi-cm.c
@@ -22,6 +22,8 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/workqueue.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
 
 #include <video/omapdss.h>
 #include <video/omap-panel-data.h>
@@ -595,10 +597,13 @@ static int dsicm_power_on(struct panel_drv_data *ddata)
                .lp_clk_max = 10000000,
        };
 
-       r = in->ops.dsi->configure_pins(in, &ddata->pin_config);
-       if (r) {
-               dev_err(&ddata->pdev->dev, "failed to configure DSI pins\n");
-               goto err0;
+       if (ddata->pin_config.num_pins > 0) {
+               r = in->ops.dsi->configure_pins(in, &ddata->pin_config);
+               if (r) {
+                       dev_err(&ddata->pdev->dev,
+                               "failed to configure DSI pins\n");
+                       goto err0;
+               }
        }
 
        r = in->ops.dsi->set_config(in, &dsi_config);
@@ -1156,6 +1161,41 @@ static int dsicm_probe_pdata(struct platform_device *pdev)
        return 0;
 }
 
+static int dsicm_probe_of(struct platform_device *pdev)
+{
+       struct device_node *node = pdev->dev.of_node;
+       struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+       struct omap_dss_device *in;
+       int gpio;
+
+       gpio = of_get_named_gpio(node, "reset-gpios", 0);
+       if (!gpio_is_valid(gpio)) {
+               dev_err(&pdev->dev, "failed to parse reset gpio\n");
+               return gpio;
+       }
+       ddata->reset_gpio = gpio;
+
+       gpio = of_get_named_gpio(node, "te-gpios", 0);
+       if (gpio_is_valid(gpio) || gpio == -ENOENT) {
+               ddata->ext_te_gpio = gpio;
+       } else {
+               dev_err(&pdev->dev, "failed to parse TE gpio\n");
+               return 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;
+
+       /* TODO: ulps, backlight */
+
+       return 0;
+}
+
 static int dsicm_probe(struct platform_device *pdev)
 {
        struct backlight_properties props;
@@ -1178,6 +1218,10 @@ static int dsicm_probe(struct platform_device *pdev)
                r = dsicm_probe_pdata(pdev);
                if (r)
                        return r;
+       } else if (pdev->dev.of_node) {
+               r = dsicm_probe_of(pdev);
+               if (r)
+                       return r;
        } else {
                return -ENODEV;
        }
@@ -1320,12 +1364,20 @@ static int __exit dsicm_remove(struct platform_device *pdev)
        return 0;
 }
 
+static const struct of_device_id dsicm_of_match[] = {
+       { .compatible = "omapdss,panel-dsi-cm", },
+       {},
+};
+
+MODULE_DEVICE_TABLE(of, dsicm_of_match);
+
 static struct platform_driver dsicm_driver = {
        .probe = dsicm_probe,
        .remove = __exit_p(dsicm_remove),
        .driver = {
                .name = "panel-dsi-cm",
                .owner = THIS_MODULE,
+               .of_match_table = dsicm_of_match,
        },
 };