Commit 1c8dbb5b authored by Kory Maincent's avatar Kory Maincent Committed by Jonathan Cameron
Browse files

iio: dac: mcp4922: add support to mcp4921 



Add support to mcp4921 which has only one output channel.

Signed-off-by: default avatarKory Maincent <kory.maincent@bootlin.com>
Reviewed-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20220624095619.1415614-1-kory.maincent@bootlin.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 53bee458

drivers/iio/dac/mcp4922.c

+9 −2
Original line number Diff line number Diff line
@@ -17,10 +17,12 @@ 
#include <linux/bitops.h>



#define MCP4922_NUM_CHANNELS	2

#define MCP4921_NUM_CHANNELS	1



enum mcp4922_supported_device_ids {

	ID_MCP4902,

	ID_MCP4912,

	ID_MCP4921,

	ID_MCP4922,

};
@@ -105,9 +107,10 @@ static int mcp4922_write_raw(struct iio_dev *indio_dev, 
	}

}



static const struct iio_chan_spec mcp4922_channels[3][MCP4922_NUM_CHANNELS] = {

static const struct iio_chan_spec mcp4922_channels[4][MCP4922_NUM_CHANNELS] = {

	[ID_MCP4902] = { MCP4922_CHAN(0, 8),	MCP4922_CHAN(1, 8) },

	[ID_MCP4912] = { MCP4922_CHAN(0, 10),	MCP4922_CHAN(1, 10) },

	[ID_MCP4921] = { MCP4922_CHAN(0, 12),	{} },

	[ID_MCP4922] = { MCP4922_CHAN(0, 12),	MCP4922_CHAN(1, 12) },

};
@@ -154,6 +157,9 @@ static int mcp4922_probe(struct spi_device *spi) 
	indio_dev->info = &mcp4922_info;

	indio_dev->modes = INDIO_DIRECT_MODE;

	indio_dev->channels = mcp4922_channels[id->driver_data];

	if (id->driver_data == ID_MCP4921)

		indio_dev->num_channels = MCP4921_NUM_CHANNELS;

	else

		indio_dev->num_channels = MCP4922_NUM_CHANNELS;

	indio_dev->name = id->name;
@@ -185,6 +191,7 @@ static void mcp4922_remove(struct spi_device *spi) 
static const struct spi_device_id mcp4922_id[] = {

	{"mcp4902", ID_MCP4902},

	{"mcp4912", ID_MCP4912},

	{"mcp4921", ID_MCP4921},

	{"mcp4922", ID_MCP4922},

	{}

};