Commit 98baf78e authored by Stefan Popa's avatar Stefan Popa Committed by Jonathan Cameron
Browse files

iio:dac:ad5686: Add AD5672R/76/76R/84R/86R support 

The AD5684R/AD5686R are a family of 4 channel DACs with 12-bit, 14-bit and
16-bit precision respectively. The devices come either with a built-in
reference or no built-in reference.

The AD5672R/AD5676/AD5676R are similar, except that they have 8 channels
instead of 4.

Datasheets:
http://www.analog.com/media/en/technical-documentation/data-sheets/AD5672R_5676R.pdf
http://www.analog.com/media/en/technical-documentation/data-sheets/AD5686R_5685R_5684R.pdf



Signed-off-by: default avatarStefan Popa <stefan.popa@analog.com>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent fe642e2d

drivers/iio/dac/ad5686.c

+46 −0
Original line number Diff line number Diff line
@@ -87,9 +87,14 @@ struct ad5686_state { 
 */



enum ad5686_supported_device_ids {

	ID_AD5672R,

	ID_AD5676,

	ID_AD5676R,

	ID_AD5684,

	ID_AD5684R,

	ID_AD5685R,

	ID_AD5686,

	ID_AD5686R

};

static int ad5686_spi_write(struct ad5686_state *st,

			     u8 cmd, u8 addr, u16 val, u8 shift)
@@ -293,15 +298,47 @@ static struct iio_chan_spec name[] = { \ 
		AD5868_CHANNEL(3, 8, bits, _shift),		\

}



#define DECLARE_AD5676_CHANNELS(name, bits, _shift)		\

static struct iio_chan_spec name[] = {				\

		AD5868_CHANNEL(0, 0, bits, _shift),		\

		AD5868_CHANNEL(1, 1, bits, _shift),		\

		AD5868_CHANNEL(2, 2, bits, _shift),		\

		AD5868_CHANNEL(3, 3, bits, _shift),		\

		AD5868_CHANNEL(4, 4, bits, _shift),		\

		AD5868_CHANNEL(5, 5, bits, _shift),		\

		AD5868_CHANNEL(6, 6, bits, _shift),		\

		AD5868_CHANNEL(7, 7, bits, _shift),		\

}



DECLARE_AD5676_CHANNELS(ad5672_channels, 12, 4);

DECLARE_AD5676_CHANNELS(ad5676_channels, 16, 0);

DECLARE_AD5686_CHANNELS(ad5684_channels, 12, 4);

DECLARE_AD5686_CHANNELS(ad5685r_channels, 14, 2);

DECLARE_AD5686_CHANNELS(ad5686_channels, 16, 0);



static const struct ad5686_chip_info ad5686_chip_info_tbl[] = {

	[ID_AD5672R] = {

		.channels = ad5672_channels,

		.int_vref_mv = 2500,

		.num_channels = 8,

	},

	[ID_AD5676] = {

		.channels = ad5676_channels,

		.num_channels = 8,

	},

	[ID_AD5676R] = {

		.channels = ad5676_channels,

		.int_vref_mv = 2500,

		.num_channels = 8,

	},

	[ID_AD5684] = {

		.channels = ad5684_channels,

		.num_channels = 4,

	},

	[ID_AD5684R] = {

		.channels = ad5684_channels,

		.int_vref_mv = 2500,

		.num_channels = 4,

	},

	[ID_AD5685R] = {

		.channels = ad5685r_channels,
@@ -311,7 +348,11 @@ static const struct ad5686_chip_info ad5686_chip_info_tbl[] = { 
	[ID_AD5686] = {

		.channels = ad5686_channels,

		.num_channels = 4,

	},

	[ID_AD5686R] = {

		.channels = ad5686_channels,

		.int_vref_mv = 2500,

		.num_channels = 4,

	},

};
@@ -391,10 +432,15 @@ static int ad5686_remove(struct spi_device *spi) 
}



static const struct spi_device_id ad5686_id[] = {

	{"ad5672r", ID_AD5672R},

	{"ad5676", ID_AD5676},

	{"ad5676r", ID_AD5676R},

	{"ad5684", ID_AD5684},

	{"ad5684r", ID_AD5684R},

	{"ad5685", ID_AD5685R}, /* Does not exist */

	{"ad5685r", ID_AD5685R},

	{"ad5686", ID_AD5686},

	{"ad5686r", ID_AD5686R},

	{}

};

MODULE_DEVICE_TABLE(spi, ad5686_id);

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