staging:iio: Move the ad7298 driver out of staging

The driver does not expose any custom API to userspace and none of the standard
static code checker tools report any issues, so move it out of staging.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/iio/adc/Kconfig

@@ -18,6 +18,18 @@ config AD7266
 	  Say yes here to build support for Analog Devices AD7265 and AD7266
 	  ADCs.
 
+config AD7298
+	tristate "Analog Devices AD7298 ADC driver"
+	depends on SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say yes here to build support for Analog Devices AD7298
+	  8 Channel ADC with temperature sensor.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad7298.
+
 config AD7791
 	tristate "Analog Devices AD7791 ADC driver"
 	depends on SPI

drivers/iio/adc/Makefile

@@ -4,6 +4,7 @@
 
 obj-$(CONFIG_AD_SIGMA_DELTA) += ad_sigma_delta.o
 obj-$(CONFIG_AD7266) += ad7266.o
+obj-$(CONFIG_AD7298) += ad7298.o
 obj-$(CONFIG_AD7476) += ad7476.o
 obj-$(CONFIG_AD7791) += ad7791.o
 obj-$(CONFIG_AD7887) += ad7887.o

drivers/iio/adc/ad7298.c

@@ -23,7 +23,7 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
 
-#include "ad7298.h"
+#include <linux/platform_data/ad7298.h>
 
 #define AD7298_WRITE	(1 << 15) /* write to the control register */
 #define AD7298_REPEAT	(1 << 14) /* repeated conversion enable */

drivers/staging/iio/adc/Kconfig

@@ -10,18 +10,6 @@ config AD7291
 	  Say yes here to build support for Analog Devices AD7291
 	  8 Channel ADC with temperature sensor.
 
-config AD7298
-	tristate "Analog Devices AD7298 ADC driver"
-	depends on SPI
-	select IIO_BUFFER
-	select IIO_TRIGGERED_BUFFER
-	help
-	  Say yes here to build support for Analog Devices AD7298
-	  8 Channel ADC with temperature sensor.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called ad7298.
-
 config AD7606
 	tristate "Analog Devices AD7606 ADC driver"
 	depends on GPIOLIB

drivers/staging/iio/adc/Makefile

@@ -12,8 +12,6 @@ ad799x-y := ad799x_core.o
 ad799x-$(CONFIG_AD799X_RING_BUFFER) += ad799x_ring.o
 obj-$(CONFIG_AD799X) += ad799x.o
 
-obj-$(CONFIG_AD7298) += ad7298.o
-
 obj-$(CONFIG_AD7291) += ad7291.o
 obj-$(CONFIG_AD7780) += ad7780.o
 obj-$(CONFIG_AD7793) += ad7793.o

include/linux/platform_data/ad7298.h

@@ -6,8 +6,8 @@
  * Licensed under the GPL-2.
  */
 
-#ifndef IIO_ADC_AD7298_H_
-#define IIO_ADC_AD7298_H_
+#ifndef __LINUX_PLATFORM_DATA_AD7298_H__
+#define __LINUX_PLATFORM_DATA_AD7298_H__
 
 /**
  * struct ad7298_platform_data - Platform data for the ad7298 ADC driver