diff options
| author | Antonio Fiol <antonio@fiol.es> | 2015-03-28 09:07:14 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2015-03-28 11:57:34 +0100 |
| commit | a878a1a61a1f0e4b23602ddd87b1408a7a748d0e (patch) | |
| tree | 5e6da606d28aa24f012bb5b3dcbe6b22b66b9074 /drivers/iio/dac/max517.c | |
| parent | iio: constify of_device_id array (diff) | |
| download | linux-a878a1a61a1f0e4b23602ddd87b1408a7a748d0e.tar.xz linux-a878a1a61a1f0e4b23602ddd87b1408a7a748d0e.zip | |
iio: max517: Add support for MAX520 and MAX521 chips.
MAX520 and MAX521 are protocol-compatible with the already supported
chips, just have more channels.
Signed-off-by: Antonio Fiol <antonio@fiol.es>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/dac/max517.c')
| -rw-r--r-- | drivers/iio/dac/max517.c | 45 |
1 files changed, 33 insertions, 12 deletions
diff --git a/drivers/iio/dac/max517.c b/drivers/iio/dac/max517.c index 9a82a7255ebb..5507b3970b4b 100644 --- a/drivers/iio/dac/max517.c +++ b/drivers/iio/dac/max517.c @@ -39,11 +39,13 @@ enum max517_device_ids { ID_MAX517, ID_MAX518, ID_MAX519, + ID_MAX520, + ID_MAX521, }; struct max517_data { struct i2c_client *client; - unsigned short vref_mv[2]; + unsigned short vref_mv[8]; }; /* @@ -149,7 +151,13 @@ static const struct iio_info max517_info = { static const struct iio_chan_spec max517_channels[] = { MAX517_CHANNEL(0), - MAX517_CHANNEL(1) + MAX517_CHANNEL(1), + MAX517_CHANNEL(2), + MAX517_CHANNEL(3), + MAX517_CHANNEL(4), + MAX517_CHANNEL(5), + MAX517_CHANNEL(6), + MAX517_CHANNEL(7), }; static int max517_probe(struct i2c_client *client, @@ -158,6 +166,7 @@ static int max517_probe(struct i2c_client *client, struct max517_data *data; struct iio_dev *indio_dev; struct max517_platform_data *platform_data = client->dev.platform_data; + int chan; indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); if (!indio_dev) @@ -169,11 +178,21 @@ static int max517_probe(struct i2c_client *client, /* establish that the iio_dev is a child of the i2c device */ indio_dev->dev.parent = &client->dev; - /* reduced channel set for MAX517 */ - if (id->driver_data == ID_MAX517) - indio_dev->num_channels = 1; - else + switch (id->driver_data) { + case ID_MAX521: + indio_dev->num_channels = 8; + break; + case ID_MAX520: + indio_dev->num_channels = 4; + break; + case ID_MAX519: + case ID_MAX518: indio_dev->num_channels = 2; + break; + default: /* single channel for MAX517 */ + indio_dev->num_channels = 1; + break; + } indio_dev->channels = max517_channels; indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &max517_info; @@ -182,11 +201,11 @@ static int max517_probe(struct i2c_client *client, * Reference voltage on MAX518 and default is 5V, else take vref_mv * from platform_data */ - if (id->driver_data == ID_MAX518 || !platform_data) { - data->vref_mv[0] = data->vref_mv[1] = 5000; /* mV */ - } else { - data->vref_mv[0] = platform_data->vref_mv[0]; - data->vref_mv[1] = platform_data->vref_mv[1]; + for (chan = 0; chan < indio_dev->num_channels; chan++) { + if (id->driver_data == ID_MAX518 || !platform_data) + data->vref_mv[chan] = 5000; /* mV */ + else + data->vref_mv[chan] = platform_data->vref_mv[chan]; } return iio_device_register(indio_dev); @@ -202,6 +221,8 @@ static const struct i2c_device_id max517_id[] = { { "max517", ID_MAX517 }, { "max518", ID_MAX518 }, { "max519", ID_MAX519 }, + { "max520", ID_MAX520 }, + { "max521", ID_MAX521 }, { } }; MODULE_DEVICE_TABLE(i2c, max517_id); @@ -218,5 +239,5 @@ static struct i2c_driver max517_driver = { module_i2c_driver(max517_driver); MODULE_AUTHOR("Roland Stigge <stigge@antcom.de>"); -MODULE_DESCRIPTION("MAX517/MAX518/MAX519 8-bit DAC"); +MODULE_DESCRIPTION("MAX517/518/519/520/521 8-bit DAC"); MODULE_LICENSE("GPL"); |