[PATCH 2/5] iio: adc: ad7606: Move spi dependent features to spi file

[Beniamin Bia <beniamin.bia@analog.com>]

Because software mode and register access are only available in spi, they
were moved in spi file and are accessbile via bops structure.
The write_os/scale will be overwritten by sw_mode_config function.
This patch was made in order to support devices in software mode without
making the driver dependent to spi and increase the abstraction of the
core.

Signed-off-by: Beniamin Bia <beniamin.bia@analog.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
---
Changes in v2:
-nothing changed

 drivers/iio/adc/ad7606.c | 20 ++------------------
 drivers/iio/adc/ad7606.h | 12 +++---------
 2 files changed, 5 insertions(+), 27 deletions(-)

diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c
index a49dc106a21c..9eec3db01a17 100644
--- a/drivers/iio/adc/ad7606.c
+++ b/drivers/iio/adc/ad7606.c
@@ -597,7 +597,7 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
 	st->write_scale = ad7606_write_scale_hw;
 	st->write_os = ad7606_write_os_hw;
 
-	if (st->chip_info->sw_mode_config)
+	if (st->bops->sw_mode_config)
 		st->sw_mode_en = device_property_present(st->dev,
 							 "adi,sw-mode");
 
@@ -606,23 +606,7 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
 		memset32(st->range, 2, ARRAY_SIZE(st->range));
 		indio_dev->info = &ad7606_info_os_and_range;
 
-		/*
-		 * In software mode, the range gpio has no longer its function.
-		 * Instead, the scale can be configured individually for each
-		 * channel from the range registers.
-		 */
-		if (st->chip_info->write_scale_sw)
-			st->write_scale = st->chip_info->write_scale_sw;
-
-		/*
-		 * In software mode, the oversampling is no longer configured
-		 * with GPIO pins. Instead, the oversampling can be configured
-		 * in configuratiion register.
-		 */
-		if (st->chip_info->write_os_sw)
-			st->write_os = st->chip_info->write_os_sw;
-
-		ret = st->chip_info->sw_mode_config(indio_dev);
+		ret = st->bops->sw_mode_config(indio_dev);
 		if (ret < 0)
 			return ret;
 	}
diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h
index d547e88f4c9d..a6aac33aa33c 100644
--- a/drivers/iio/adc/ad7606.h
+++ b/drivers/iio/adc/ad7606.h
@@ -39,12 +39,6 @@
  *			oversampling ratios.
  * @oversampling_num	number of elements stored in oversampling_avail array
  * @os_req_reset	some devices require a reset to update oversampling
- * @write_scale_sw	pointer to the function which writes the scale via spi
-			in software mode
- * @write_os_sw		pointer to the function which writes the os via spi
-			in software mode
- * @sw_mode_config:	pointer to a function which configured the device
- *			for software mode
  */
 struct ad7606_chip_info {
 	const struct iio_chan_spec	*channels;
@@ -52,9 +46,6 @@ struct ad7606_chip_info {
 	const unsigned int		*oversampling_avail;
 	unsigned int			oversampling_num;
 	bool				os_req_reset;
-	int (*write_scale_sw)(struct iio_dev *indio_dev, int ch, int val);
-	int (*write_os_sw)(struct iio_dev *indio_dev, int val);
-	int (*sw_mode_config)(struct iio_dev *indio_dev);
 };
 
 /**
@@ -124,10 +115,13 @@ struct ad7606_state {
 /**
  * struct ad7606_bus_ops - driver bus operations
  * @read_block		function pointer for reading blocks of data
+ * @sw_mode_config:	pointer to a function which configured the device
+ *			for software mode
  */
 struct ad7606_bus_ops {
 	/* more methods added in future? */
 	int (*read_block)(struct device *dev, int num, void *data);
+	int (*sw_mode_config)(struct iio_dev *indio_dev);
 };
 
 int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
-- 
2.17.1