staging: iio: ad2s1200: Replace platform data with dt bindings

Remove usage of platform data, and replace it with device tree
facilities.

Signed-off-by: David Veenstra <davidjulianveenstra@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/staging/iio/resolver/ad2s1200.c b/drivers/staging/iio/resolver/ad2s1200.c
index b2c46a8..9a8aa24 100644 (file)
--- a/drivers/staging/iio/resolver/ad2s1200.c
+++ b/drivers/staging/iio/resolver/ad2s1200.c
@@ -25,9 +25,6 @@
 
 #define DRV_NAME "ad2s1200"
 
-/* input pin sample and rdvel is controlled by driver */
-#define AD2S1200_PN    2
-
 /* input clock on serial interface */
 #define AD2S1200_HZ    8192000
 /* clock period in nano second */
@@ -111,20 +108,9 @@ static const struct iio_info ad2s1200_info = {
 
 static int ad2s1200_probe(struct spi_device *spi)
 {
-       unsigned short *pins = spi->dev.platform_data;
        struct ad2s1200_state *st;
        struct iio_dev *indio_dev;
-       int pn, ret;
-
-       for (pn = 0; pn < AD2S1200_PN; pn++) {
-               ret = devm_gpio_request_one(&spi->dev, pins[pn], GPIOF_DIR_OUT,
-                                           DRV_NAME);
-               if (ret) {
-                       dev_err(&spi->dev, "request gpio pin %d failed\n",
-                               pins[pn]);
-                       return ret;
-               }
-       }
+       int ret;
 
        indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
        if (!indio_dev)
@@ -134,8 +120,20 @@ static int ad2s1200_probe(struct spi_device *spi)
        st = iio_priv(indio_dev);
        mutex_init(&st->lock);
        st->sdev = spi;
-       st->sample = gpio_to_desc(pins[0]);
-       st->rdvel = gpio_to_desc(pins[1]);
+
+       st->sample = devm_gpiod_get(&spi->dev, "adi,sample", GPIOD_OUT_LOW);
+       if (IS_ERR(st->sample)) {
+               dev_err(&spi->dev, "Failed to claim SAMPLE gpio: err=%ld\n",
+                       PTR_ERR(st->sample));
+               return PTR_ERR(st->sample);
+       }
+
+       st->rdvel = devm_gpiod_get(&spi->dev, "adi,rdvel", GPIOD_OUT_LOW);
+       if (IS_ERR(st->rdvel)) {
+               dev_err(&spi->dev, "Failed to claim RDVEL gpio: err=%ld\n",
+                       PTR_ERR(st->rdvel));
+               return PTR_ERR(st->rdvel);
+       }
 
        indio_dev->dev.parent = &spi->dev;
        indio_dev->info = &ad2s1200_info;