[PATCH] video: fbdev: convert to use GPIO descriptors

[Ludovic Desroches]

Use GPIO descriptors instead of relying on the old method.

Signed-off-by: Ludovic Desroches <ludovic.desroc...@microchip.com>
---
 drivers/video/fbdev/atmel_lcdfb.c | 30 ++++++++++++------------------
 1 file changed, 12 insertions(+), 18 deletions(-)

diff --git a/drivers/video/fbdev/atmel_lcdfb.c 
b/drivers/video/fbdev/atmel_lcdfb.c
index 3dee267d7c75..ef3d4198014f 100644
--- a/drivers/video/fbdev/atmel_lcdfb.c
+++ b/drivers/video/fbdev/atmel_lcdfb.c
@@ -18,6 +18,7 @@
 #include <linux/delay.h>
 #include <linux/backlight.h>
 #include <linux/gfp.h>
+#include <linux/gpio/consumer.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
@@ -61,8 +62,7 @@ struct atmel_lcdfb_info {
 };
 
 struct atmel_lcdfb_power_ctrl_gpio {
-       int gpio;
-       int active_low;
+       struct gpio_desc *gpiod;
 
        struct list_head list;
 };
@@ -1018,7 +1018,7 @@ static void atmel_lcdfb_power_control_gpio(struct 
atmel_lcdfb_pdata *pdata, int
        struct atmel_lcdfb_power_ctrl_gpio *og;
 
        list_for_each_entry(og, &pdata->pwr_gpios, list)
-               gpio_set_value(og->gpio, on);
+               gpiod_set_value(og->gpiod, on);
 }
 
 static int atmel_lcdfb_of_init(struct atmel_lcdfb_info *sinfo)
@@ -1031,11 +1031,11 @@ static int atmel_lcdfb_of_init(struct atmel_lcdfb_info 
*sinfo)
        struct device_node *display_np;
        struct device_node *timings_np;
        struct display_timings *timings;
-       enum of_gpio_flags flags;
        struct atmel_lcdfb_power_ctrl_gpio *og;
        bool is_gpio_power = false;
        int ret = -ENOENT;
-       int i, gpio;
+       int i;
+       struct gpio_desc *gpiod;
 
        sinfo->config = (struct atmel_lcdfb_config*)
                of_match_device(atmel_lcdfb_dt_ids, dev)->data;
@@ -1072,28 +1072,22 @@ static int atmel_lcdfb_of_init(struct atmel_lcdfb_info 
*sinfo)
 
        INIT_LIST_HEAD(&pdata->pwr_gpios);
        ret = -ENOMEM;
-       for (i = 0; i < of_gpio_named_count(display_np, 
"atmel,power-control-gpio"); i++) {
-               gpio = of_get_named_gpio_flags(display_np, 
"atmel,power-control-gpio",
-                                              i, &flags);
-               if (gpio < 0)
+       for (i = 0; i < gpiod_count(dev, "atmel,power-control"); i++) {
+               gpiod = devm_gpiod_get_index_optional(dev,
+                               "atmel,power-control", i, GPIOD_ASIS);
+               if (!gpiod)
                        continue;
 
                og = devm_kzalloc(dev, sizeof(*og), GFP_KERNEL);
                if (!og)
                        goto put_display_node;
 
-               og->gpio = gpio;
-               og->active_low = flags & OF_GPIO_ACTIVE_LOW;
+               og->gpiod = gpiod;
                is_gpio_power = true;
-               ret = devm_gpio_request(dev, gpio, "lcd-power-control-gpio");
-               if (ret) {
-                       dev_err(dev, "request gpio %d failed\n", gpio);
-                       goto put_display_node;
-               }
 
-               ret = gpio_direction_output(gpio, og->active_low);
+               ret = gpiod_direction_output(gpiod, gpiod_is_active_low(gpiod));
                if (ret) {
-                       dev_err(dev, "set direction output gpio %d failed\n", 
gpio);
+                       dev_err(dev, "set direction output gpio 
atmel,power-control[%d] failed\n", i);
                        goto put_display_node;
                }
                list_add(&og->list, &pdata->pwr_gpios);
-- 
2.12.2