[PATCH v3 4/9] staging: iio: ad2s1200: Replace platform data with dt bindings

[David Veenstra]

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

Signed-off-by: David Veenstra <davidjulianveens...@gmail.com>
---
Changes in v3:
 - Introduced in this version.

 drivers/staging/iio/resolver/ad2s1200.c | 32 +++++++++++++++-----------------
 1 file changed, 15 insertions(+), 17 deletions(-)

diff --git a/drivers/staging/iio/resolver/ad2s1200.c 
b/drivers/staging/iio/resolver/ad2s1200.c
index e7bfe5aa4c45..3c7163610ff6 100644
--- a/drivers/staging/iio/resolver/ad2s1200.c
+++ b/drivers/staging/iio/resolver/ad2s1200.c
@@ -26,9 +26,6 @@
 
 #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 */
@@ -113,20 +110,9 @@ 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 = 0;
-
-       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 = 0;
 
        indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
        if (!indio_dev)
@@ -136,8 +122,20 @@ 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, "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, "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;
-- 
2.16.2

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