[PATCH 2/5] iio: adc: xilinx-xadc: Add setup_channels function pointer to ops structure

[Sai Krishna Potthuri]

Add setup_channels function pointer to xadc_ops structure to enable
different interfaces to have custom channel setup logic.

Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri at amd.com>
---
 drivers/iio/adc/xilinx-xadc-core.c | 8 +++++++-
 drivers/iio/adc/xilinx-xadc.h      | 1 +
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
index 52b51821007d..ee58b4a80f34 100644
--- a/drivers/iio/adc/xilinx-xadc-core.c
+++ b/drivers/iio/adc/xilinx-xadc-core.c
@@ -35,6 +35,8 @@
 
 #include "xilinx-xadc.h"
 
+static int xadc_parse_dt(struct iio_dev *indio_dev, unsigned int *conf, int irq);
+
 static const unsigned int XADC_ZYNQ_UNMASK_TIMEOUT = 500;
 
 /* ZYNQ register definitions */
@@ -455,6 +457,7 @@ static const struct xadc_ops xadc_zynq_ops = {
 	.get_dclk_rate = xadc_zynq_get_dclk_rate,
 	.interrupt_handler = xadc_zynq_interrupt_handler,
 	.update_alarm = xadc_zynq_update_alarm,
+	.setup_channels = xadc_parse_dt,
 	.type = XADC_TYPE_S7,
 	/* Temp in C = (val * 503.975) / 2**bits - 273.15 */
 	.temp_scale = 503975,
@@ -567,6 +570,7 @@ static const struct xadc_ops xadc_7s_axi_ops = {
 	.get_dclk_rate = xadc_axi_get_dclk,
 	.update_alarm = xadc_axi_update_alarm,
 	.interrupt_handler = xadc_axi_interrupt_handler,
+	.setup_channels = xadc_parse_dt,
 	.flags = XADC_FLAGS_BUFFERED | XADC_FLAGS_IRQ_OPTIONAL,
 	.type = XADC_TYPE_S7,
 	/* Temp in C = (val * 503.975) / 2**bits - 273.15 */
@@ -581,6 +585,7 @@ static const struct xadc_ops xadc_us_axi_ops = {
 	.get_dclk_rate = xadc_axi_get_dclk,
 	.update_alarm = xadc_axi_update_alarm,
 	.interrupt_handler = xadc_axi_interrupt_handler,
+	.setup_channels = xadc_parse_dt,
 	.flags = XADC_FLAGS_BUFFERED | XADC_FLAGS_IRQ_OPTIONAL,
 	.type = XADC_TYPE_US,
 	/**
@@ -1333,9 +1338,10 @@ static struct iio_dev *xadc_device_setup(struct device *dev, int size,
 static int xadc_device_configure(struct device *dev, struct iio_dev *indio_dev,
 				 int irq, unsigned int *conf0, unsigned int *bipolar_mask)
 {
+	struct xadc *xadc = iio_priv(indio_dev);
 	int ret, i;
 
-	ret = xadc_parse_dt(indio_dev, conf0, irq);
+	ret = xadc->ops->setup_channels(indio_dev, conf0, irq);
 	if (ret)
 		return ret;
 
diff --git a/drivers/iio/adc/xilinx-xadc.h b/drivers/iio/adc/xilinx-xadc.h
index b4d9d4683117..26cd65153176 100644
--- a/drivers/iio/adc/xilinx-xadc.h
+++ b/drivers/iio/adc/xilinx-xadc.h
@@ -82,6 +82,7 @@ struct xadc_ops {
 	void (*update_alarm)(struct xadc *xadc, unsigned int alarm);
 	unsigned long (*get_dclk_rate)(struct xadc *xadc);
 	irqreturn_t (*interrupt_handler)(int irq, void *devid);
+	int (*setup_channels)(struct iio_dev *indio_dev, unsigned int *conf, int irq);
 
 	unsigned int flags;
 	enum xadc_type type;
-- 
2.25.1