OMAPDSS: LS037V7DW01: handle gpios in panel driver

Move the GPIO handling from board file's platform callbacks to the panel
driver, which gets the gpios via platform data.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c

@@ -23,11 +23,10 @@
 #include <linux/fb.h>
 #include <linux/err.h>
 #include <linux/slab.h>
+#include <linux/gpio.h>
 
 #include <video/omapdss.h>
-
-struct sharp_data {
-};
+#include <video/omap-panel-data.h>
 
 static struct omap_video_timings sharp_ls_timings = {
 	.x_res = 480,
@@ -50,31 +49,67 @@ static struct omap_video_timings sharp_ls_timings = {
 	.sync_pclk_edge	= OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES,
 };
 
+static inline struct panel_sharp_ls037v7dw01_data
+*get_panel_data(const struct omap_dss_device *dssdev)
+{
+	return (struct panel_sharp_ls037v7dw01_data *) dssdev->data;
+}
 
 static int sharp_ls_panel_probe(struct omap_dss_device *dssdev)
 {
-	struct sharp_data *sd;
+	struct panel_sharp_ls037v7dw01_data *pd = get_panel_data(dssdev);
+	int r;
+
+	if (!pd)
+		return -EINVAL;
 
 	dssdev->panel.timings = sharp_ls_timings;
 
-	sd = kzalloc(sizeof(*sd), GFP_KERNEL);
-	if (!sd)
-		return -ENOMEM;
+	if (gpio_is_valid(pd->mo_gpio)) {
+		r = devm_gpio_request_one(&dssdev->dev, pd->mo_gpio,
+				GPIOF_OUT_INIT_LOW, "lcd MO");
+		if (r)
+			return r;
+	}
+
+	if (gpio_is_valid(pd->lr_gpio)) {
+		r = devm_gpio_request_one(&dssdev->dev, pd->lr_gpio,
+				GPIOF_OUT_INIT_HIGH, "lcd LR");
+		if (r)
+			return r;
+	}
 
-	dev_set_drvdata(&dssdev->dev, sd);
+	if (gpio_is_valid(pd->ud_gpio)) {
+		r = devm_gpio_request_one(&dssdev->dev, pd->ud_gpio,
+				GPIOF_OUT_INIT_HIGH, "lcd UD");
+		if (r)
+			return r;
+	}
+
+	if (gpio_is_valid(pd->resb_gpio)) {
+		r = devm_gpio_request_one(&dssdev->dev, pd->resb_gpio,
+				GPIOF_OUT_INIT_LOW, "lcd RESB");
+		if (r)
+			return r;
+	}
+
+	if (gpio_is_valid(pd->ini_gpio)) {
+		r = devm_gpio_request_one(&dssdev->dev, pd->ini_gpio,
+				GPIOF_OUT_INIT_LOW, "lcd INI");
+		if (r)
+			return r;
+	}
 
 	return 0;
 }
 
 static void __exit sharp_ls_panel_remove(struct omap_dss_device *dssdev)
 {
-	struct sharp_data *sd = dev_get_drvdata(&dssdev->dev);
-
-	kfree(sd);
 }
 
 static int sharp_ls_power_on(struct omap_dss_device *dssdev)
 {
+	struct panel_sharp_ls037v7dw01_data *pd = get_panel_data(dssdev);
 	int r = 0;
 
 	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
@@ -96,6 +131,12 @@ static int sharp_ls_power_on(struct omap_dss_device *dssdev)
 			goto err1;
 	}
 
+	if (gpio_is_valid(pd->resb_gpio))
+		gpio_set_value_cansleep(pd->resb_gpio, 1);
+
+	if (gpio_is_valid(pd->ini_gpio))
+		gpio_set_value_cansleep(pd->ini_gpio, 1);
+
 	return 0;
 err1:
 	omapdss_dpi_display_disable(dssdev);
@@ -105,9 +146,17 @@ static int sharp_ls_power_on(struct omap_dss_device *dssdev)
 
 static void sharp_ls_power_off(struct omap_dss_device *dssdev)
 {
+	struct panel_sharp_ls037v7dw01_data *pd = get_panel_data(dssdev);
+
 	if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
 		return;
 
+	if (gpio_is_valid(pd->ini_gpio))
+		gpio_set_value_cansleep(pd->ini_gpio, 0);
+
+	if (gpio_is_valid(pd->resb_gpio))
+		gpio_set_value_cansleep(pd->resb_gpio, 0);
+
 	if (dssdev->platform_disable)
 		dssdev->platform_disable(dssdev);