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iio: adc: max1027: Introduce 12-bit devices support

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Maxim's max12xx series is very similar to the max10xx series, with the
difference of the measurements depth which is upgraded from 10 to 12
bits per channel. Everything else looks the same.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Miquel Raynal 2019-10-11 16:43:44 +02:00 committed by Jonathan Cameron
parent 7af5257d84
commit ae47d009b5
2 changed files with 39 additions and 3 deletions
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4
drivers/iio/adc/Kconfig
View File

@ -508,8 +508,8 @@ config MAX1027
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
Say yes here to build support for Maxim SPI ADC models
max1027, max1029 and max1031.
Say yes here to build support for Maxim SPI {10,12}-bit ADC models:
max1027, max1029, max1031, max1227, max1229 and max1231.
To compile this driver as a module, choose M here: the module will be
called max1027.

38
drivers/iio/adc/max1027.c
View File

@ -63,12 +63,18 @@ enum max1027_id {
max1027,
max1029,
max1031,
max1227,
max1229,
max1231,
};
static const struct spi_device_id max1027_id[] = {
{"max1027", max1027},
{"max1029", max1029},
{"max1031", max1031},
{"max1227", max1227},
{"max1229", max1229},
{"max1231", max1231},
{}
};
MODULE_DEVICE_TABLE(spi, max1027_id);
@ -78,6 +84,9 @@ static const struct of_device_id max1027_adc_dt_ids[] = {
{ .compatible = "maxim,max1027" },
{ .compatible = "maxim,max1029" },
{ .compatible = "maxim,max1031" },
{ .compatible = "maxim,max1227" },
{ .compatible = "maxim,max1229" },
{ .compatible = "maxim,max1231" },
{},
};
MODULE_DEVICE_TABLE(of, max1027_adc_dt_ids);
@ -153,6 +162,18 @@ static const struct iio_chan_spec max1031_channels[] = {
MAX1X31_CHANNELS(10),
};
static const struct iio_chan_spec max1227_channels[] = {
MAX1X27_CHANNELS(12),
};
static const struct iio_chan_spec max1229_channels[] = {
MAX1X29_CHANNELS(12),
};
static const struct iio_chan_spec max1231_channels[] = {
MAX1X31_CHANNELS(12),
};
static const unsigned long max1027_available_scan_masks[] = {
0x000001ff,
0x00000000,
@ -190,6 +211,21 @@ static const struct max1027_chip_info max1027_chip_info_tbl[] = {
.num_channels = ARRAY_SIZE(max1031_channels),
.available_scan_masks = max1031_available_scan_masks,
},
[max1227] = {
.channels = max1227_channels,
.num_channels = ARRAY_SIZE(max1227_channels),
.available_scan_masks = max1027_available_scan_masks,
},
[max1229] = {
.channels = max1229_channels,
.num_channels = ARRAY_SIZE(max1229_channels),
.available_scan_masks = max1029_available_scan_masks,
},
[max1231] = {
.channels = max1231_channels,
.num_channels = ARRAY_SIZE(max1231_channels),
.available_scan_masks = max1031_available_scan_masks,
},
};
struct max1027_state {
@ -486,5 +522,5 @@ static struct spi_driver max1027_driver = {
module_spi_driver(max1027_driver);
MODULE_AUTHOR("Philippe Reynes <tremyfr@yahoo.fr>");
MODULE_DESCRIPTION("MAX1027/MAX1029/MAX1031 ADC");
MODULE_DESCRIPTION("MAX1X27/MAX1X29/MAX1X31 ADC");
MODULE_LICENSE("GPL v2");