This patch adds support for iio_consumer to Analog Devices AD7923 ADC driver.
Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxx>
Verified-by: Patrick Vasseur <patrick.vasseur@xxxxxx>
diff -urN a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c
--- a/drivers/iio/adc/ad7923.c 1970-01-01 01:00:00.000000000 +0100
+++ b/drivers/iio/adc/ad7923.c 2013-02-12 15:16:29.000000000 +0100
@@ -19,11 +19,15 @@
#include <linux/interrupt.h>
#include <linux/iio/iio.h>
+#include <linux/iio/driver.h>
+#include <linux/iio/machine.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>
+#define AD7923_NAME "ad7923"
+
#define AD7923_WRITE_CR (1 << 11) /* write control register */
#define AD7923_RANGE (1 << 1) /* range to REFin */
#define AD7923_CODING (1 << 0) /* coding is straight binary */
@@ -96,6 +100,7 @@
.storagebits = 16, \
.endianness = IIO_BE, \
}, \
+ .datasheet_name = #index, \
}
#define DECLARE_AD7923_CHANNELS(name, bits) \
@@ -195,6 +200,31 @@
return IRQ_HANDLED;
}
+/* default maps used by iio consumer */
+static struct iio_map ad7923_default_iio_maps[] = {
+ {
+ .consumer_dev_name = AD7923_NAME,
+ .consumer_channel = "channel_0",
+ .adc_channel_label = "0",
+ },
+ {
+ .consumer_dev_name = AD7923_NAME,
+ .consumer_channel = "channel_1",
+ .adc_channel_label = "1",
+ },
+ {
+ .consumer_dev_name = AD7923_NAME,
+ .consumer_channel = "channel_2",
+ .adc_channel_label = "2",
+ },
+ {
+ .consumer_dev_name = AD7923_NAME,
+ .consumer_channel = "channel_3",
+ .adc_channel_label = "3",
+ },
+ { }
+};
+
static int ad7923_scan_direct(struct ad7923_state *st, unsigned ch)
{
int ret, cmd;
@@ -325,12 +355,18 @@
if (ret)
goto error_disable_reg;
- ret = iio_device_register(indio_dev);
+ ret = iio_map_array_register(indio_dev, ad7923_default_iio_maps);
if (ret)
goto error_cleanup_ring;
+ ret = iio_device_register(indio_dev);
+ if (ret)
+ goto error_unmap;
+
return 0;
+error_unmap:
+ iio_map_array_unregister(indio_dev);
error_cleanup_ring:
iio_triggered_buffer_cleanup(indio_dev);
error_disable_reg:
@@ -349,6 +385,7 @@
struct ad7923_state *st = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
+ iio_map_array_unregister(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
regulator_disable(st->reg);
regulator_put(st->reg);
@@ -368,7 +405,7 @@
static struct spi_driver ad7923_driver = {
.driver = {
- .name = "ad7923",
+ .name = AD7923_NAME,
.owner = THIS_MODULE,
},
.probe = ad7923_probe,
--
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