OMAPDSS: panel sharp-ls037v7dw01 DT support

Add DT support for sharp-ls037v7dw01.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 99 insertions, 3 deletions

diff --git a/drivers/video/fbdev/omap2/displays-new/panel-sharp-ls037v7dw01.c b/drivers/video/fbdev/omap2/displays-new/panel-sharp-ls037v7dw01.c
index 015d49300f2f..f1f72ce50a17 100644
--- a/drivers/video/fbdev/omap2/displays-new/panel-sharp-ls037v7dw01.c
+++ b/drivers/video/fbdev/omap2/displays-new/panel-sharp-ls037v7dw01.c
@@ -12,15 +12,18 @@
 #include <linux/delay.h>
 #include <linux/gpio.h>
 #include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
-
+#include <linux/regulator/consumer.h>
 #include <video/omapdss.h>
 #include <video/omap-panel-data.h>
 
 struct panel_drv_data {
         struct omap_dss_device dssdev;
         struct omap_dss_device *in;
+        struct regulator *vcc;
 
         int data_lines;
 
@@ -95,12 +98,21 @@ static int sharp_ls_enable(struct omap_dss_device *dssdev)
         if (omapdss_device_is_enabled(dssdev))
                 return 0;
 
-        in->ops.dpi->set_data_lines(in, ddata->data_lines);
+        if (ddata->data_lines)
+                in->ops.dpi->set_data_lines(in, ddata->data_lines);
         in->ops.dpi->set_timings(in, &ddata->videomode);
 
+        if (ddata->vcc) {
+                r = regulator_enable(ddata->vcc);
+                if (r != 0)
+                        return r;
+        }
+
         r = in->ops.dpi->enable(in);
-        if (r)
+        if (r) {
+                regulator_disable(ddata->vcc);
                 return r;
+        }
 
         /* wait couple of vsyncs until enabling the LCD */
         msleep(50);
@@ -136,6 +148,9 @@ static void sharp_ls_disable(struct omap_dss_device *dssdev)
 
         in->ops.dpi->disable(in);
 
+        if (ddata->vcc)
+                regulator_disable(ddata->vcc);
+
         dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
@@ -249,6 +264,75 @@ static int sharp_ls_probe_pdata(struct platform_device *pdev)
         return 0;
 }
 
+static  int sharp_ls_get_gpio_of(struct device *dev, int index, int val,
+        const char *desc, struct gpio_desc **gpiod)
+{
+        struct gpio_desc *gd;
+        int r;
+
+        *gpiod = NULL;
+
+        gd = devm_gpiod_get_index(dev, desc, index);
+        if (IS_ERR(gd))
+                return PTR_ERR(gd) == -ENOENT ? 0 : PTR_ERR(gd);
+
+        r = gpiod_direction_output(gd, val);
+        if (r)
+                return r;
+
+        *gpiod = gd;
+        return 0;
+}
+
+static int sharp_ls_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 r;
+
+        ddata->vcc = devm_regulator_get(&pdev->dev, "envdd");
+        if (IS_ERR(ddata->vcc)) {
+                dev_err(&pdev->dev, "failed to get regulator\n");
+                return PTR_ERR(ddata->vcc);
+        }
+
+        /* lcd INI */
+        r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "enable", &ddata->ini_gpio);
+        if (r)
+                return r;
+
+        /* lcd RESB */
+        r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "reset", &ddata->resb_gpio);
+        if (r)
+                return r;
+
+        /* lcd MO */
+        r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "mode", &ddata->mo_gpio);
+        if (r)
+                return r;
+
+        /* lcd LR */
+        r = sharp_ls_get_gpio_of(&pdev->dev, 1, 1, "mode", &ddata->lr_gpio);
+        if (r)
+                return r;
+
+        /* lcd UD */
+        r = sharp_ls_get_gpio_of(&pdev->dev, 2, 1, "mode", &ddata->ud_gpio);
+        if (r)
+                return r;
+
+        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 sharp_ls_probe(struct platform_device *pdev)
 {
         struct panel_drv_data *ddata;
@@ -265,6 +349,10 @@ static int sharp_ls_probe(struct platform_device *pdev)
                 r = sharp_ls_probe_pdata(pdev);
                 if (r)
                         return r;
+        } else if (pdev->dev.of_node) {
+                r = sharp_ls_probe_of(pdev);
+                if (r)
+                        return r;
         } else {
                 return -ENODEV;
         }
@@ -308,12 +396,20 @@ static int __exit sharp_ls_remove(struct platform_device *pdev)
         return 0;
 }
 
+static const struct of_device_id sharp_ls_of_match[] = {
+        { .compatible = "omapdss,sharp,ls037v7dw01", },
+        {},
+};
+
+MODULE_DEVICE_TABLE(of, sharp_ls_of_match);
+
 static struct platform_driver sharp_ls_driver = {
         .probe = sharp_ls_probe,
         .remove = __exit_p(sharp_ls_remove),
         .driver = {
                 .name = "panel-sharp-ls037v7dw01",
                 .owner = THIS_MODULE,
+                .of_match_table = sharp_ls_of_match,
         },
 };