drivers/rtc/rtc-v3020.c: use gpio_request_array()

Using gpio_request_array()/gpio_free_array() can make the code simpler
because it can set the direction and initial value in one shot and the for
loop is unnecessary.

Also, struct v3020_gpio is removed, because the struct v3020_gpio is
replaced with struct gpio.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/drivers/rtc/rtc-v3020.c b/drivers/rtc/rtc-v3020.c
index bca5d677bc85385d31efcd5486a4f44ac08bed73..600798cd4d0c9db5c39b3fba78558c4af49f2133 100644 (file)
--- a/drivers/rtc/rtc-v3020.c
+++ b/drivers/rtc/rtc-v3020.c
@@ -49,18 +49,13 @@ struct v3020_chip_ops {
 #define V3020_RD       2
 #define V3020_IO       3
 
-struct v3020_gpio {
-       const char *name;
-       unsigned int gpio;
-};
-
 struct v3020 {
        /* MMIO access */
        void __iomem *ioaddress;
        int leftshift;
 
        /* GPIO access */
-       struct v3020_gpio *gpio;
+       struct gpio *gpio;
 
        struct v3020_chip_ops *ops;
 
@@ -107,48 +102,40 @@ static struct v3020_chip_ops v3020_mmio_ops = {
        .write_bit      = v3020_mmio_write_bit,
 };
 
-static struct v3020_gpio v3020_gpio[] = {
-       { "RTC CS", 0 },
-       { "RTC WR", 0 },
-       { "RTC RD", 0 },
-       { "RTC IO", 0 },
+static struct gpio v3020_gpio[] = {
+       { 0, GPIOF_OUT_INIT_HIGH, "RTC CS"},
+       { 0, GPIOF_OUT_INIT_HIGH, "RTC WR"},
+       { 0, GPIOF_OUT_INIT_HIGH, "RTC RD"},
+       { 0, GPIOF_OUT_INIT_HIGH, "RTC IO"},
 };
 
 static int v3020_gpio_map(struct v3020 *chip, struct platform_device *pdev,
                          struct v3020_platform_data *pdata)
 {
-       int i, err;
+       int err;
 
        v3020_gpio[V3020_CS].gpio = pdata->gpio_cs;
        v3020_gpio[V3020_WR].gpio = pdata->gpio_wr;
        v3020_gpio[V3020_RD].gpio = pdata->gpio_rd;
        v3020_gpio[V3020_IO].gpio = pdata->gpio_io;
 
-       for (i = 0; i < ARRAY_SIZE(v3020_gpio); i++) {
-               err = gpio_request(v3020_gpio[i].gpio, v3020_gpio[i].name);
-               if (err)
-                       goto err_request;
-
-               gpio_direction_output(v3020_gpio[i].gpio, 1);
-       }
+       err = gpio_request_array(v3020_gpio, ARRAY_SIZE(v3020_gpio));
+       if (err)
+               goto err_request;
 
        chip->gpio = v3020_gpio;
 
        return 0;
 
 err_request:
-       while (--i >= 0)
-               gpio_free(v3020_gpio[i].gpio);
+       gpio_free_array(v3020_gpio, ARRAY_SIZE(v3020_gpio));
 
        return err;
 }
 
 static void v3020_gpio_unmap(struct v3020 *chip)
 {
-       int i;
-
-       for (i = 0; i < ARRAY_SIZE(v3020_gpio); i++)
-               gpio_free(v3020_gpio[i].gpio);
+       gpio_free_array(v3020_gpio, ARRAY_SIZE(v3020_gpio));
 }
 
 static void v3020_gpio_write_bit(struct v3020 *chip, unsigned char bit)