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>

1 files changed, 60 insertions, 11 deletions

diff --git a/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c b/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
index eb6bd817a079..e6d9c9bf41f0 100644
--- a/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
+++ b/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 @@ err0:
 
 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);