diff options
author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2020-01-30 16:15:49 +0300 |
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committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2020-02-14 18:06:24 +0300 |
commit | 9f15a4a0adc910a7bd535b755185f89c3e25b37e (patch) | |
tree | 9fcde9ccf0fe12bafe20144f4373bc319875afa7 /drivers/iio/dac | |
parent | f243d0f0bd16c281ba5cce19eae86b433257fc2a (diff) | |
download | linux-9f15a4a0adc910a7bd535b755185f89c3e25b37e.tar.xz |
iio: dac: ltc2632: add support for LTC2636 family
The only difference between LTC2632 and LTC2636 is that the former has
two DAC channels while the latter has eight.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/dac')
-rw-r--r-- | drivers/iio/dac/Kconfig | 5 | ||||
-rw-r--r-- | drivers/iio/dac/ltc2632.c | 77 |
2 files changed, 77 insertions, 5 deletions
diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig index 979070196da9..3adbd2de38a1 100644 --- a/drivers/iio/dac/Kconfig +++ b/drivers/iio/dac/Kconfig @@ -132,11 +132,12 @@ config LTC1660 module will be called ltc1660. config LTC2632 - tristate "Linear Technology LTC2632-12/10/8 DAC spi driver" + tristate "Linear Technology LTC2632-12/10/8 and LTC2636-12/10/8 DAC spi driver" depends on SPI help Say yes here to build support for Linear Technology - LTC2632-12, LTC2632-10, LTC2632-8 converters (DAC). + LTC2632-12, LTC2632-10, LTC2632-8, LTC2636-12, LTC2636-10 and + LTC2636-8 converters (DAC). To compile this driver as a module, choose M here: the module will be called ltc2632. diff --git a/drivers/iio/dac/ltc2632.c b/drivers/iio/dac/ltc2632.c index 7ab92e178496..1e7ffa0f6071 100644 --- a/drivers/iio/dac/ltc2632.c +++ b/drivers/iio/dac/ltc2632.c @@ -12,8 +12,6 @@ #include <linux/iio/iio.h> #include <linux/regulator/consumer.h> -#define LTC2632_DAC_CHANNELS 2 - #define LTC2632_ADDR_DAC0 0x0 #define LTC2632_ADDR_DAC1 0x1 @@ -33,6 +31,7 @@ */ struct ltc2632_chip_info { const struct iio_chan_spec *channels; + const size_t num_channels; const int vref_mv; }; @@ -57,6 +56,12 @@ enum ltc2632_supported_device_ids { ID_LTC2632H12, ID_LTC2632H10, ID_LTC2632H8, + ID_LTC2636L12, + ID_LTC2636L10, + ID_LTC2636L8, + ID_LTC2636H12, + ID_LTC2636H10, + ID_LTC2636H8, }; static int ltc2632_spi_write(struct spi_device *spi, @@ -190,6 +195,12 @@ static const struct iio_chan_spec_ext_info ltc2632_ext_info[] = { const struct iio_chan_spec _name ## _channels[] = { \ LTC2632_CHANNEL(0, _bits), \ LTC2632_CHANNEL(1, _bits), \ + LTC2632_CHANNEL(2, _bits), \ + LTC2632_CHANNEL(3, _bits), \ + LTC2632_CHANNEL(4, _bits), \ + LTC2632_CHANNEL(5, _bits), \ + LTC2632_CHANNEL(6, _bits), \ + LTC2632_CHANNEL(7, _bits), \ } static DECLARE_LTC2632_CHANNELS(ltc2632x12, 12); @@ -199,26 +210,62 @@ static DECLARE_LTC2632_CHANNELS(ltc2632x8, 8); static const struct ltc2632_chip_info ltc2632_chip_info_tbl[] = { [ID_LTC2632L12] = { .channels = ltc2632x12_channels, + .num_channels = 2, .vref_mv = 2500, }, [ID_LTC2632L10] = { .channels = ltc2632x10_channels, + .num_channels = 2, .vref_mv = 2500, }, [ID_LTC2632L8] = { .channels = ltc2632x8_channels, + .num_channels = 2, .vref_mv = 2500, }, [ID_LTC2632H12] = { .channels = ltc2632x12_channels, + .num_channels = 2, .vref_mv = 4096, }, [ID_LTC2632H10] = { .channels = ltc2632x10_channels, + .num_channels = 2, .vref_mv = 4096, }, [ID_LTC2632H8] = { .channels = ltc2632x8_channels, + .num_channels = 2, + .vref_mv = 4096, + }, + [ID_LTC2636L12] = { + .channels = ltc2632x12_channels, + .num_channels = 8, + .vref_mv = 2500, + }, + [ID_LTC2636L10] = { + .channels = ltc2632x10_channels, + .num_channels = 8, + .vref_mv = 2500, + }, + [ID_LTC2636L8] = { + .channels = ltc2632x8_channels, + .num_channels = 8, + .vref_mv = 2500, + }, + [ID_LTC2636H12] = { + .channels = ltc2632x12_channels, + .num_channels = 8, + .vref_mv = 4096, + }, + [ID_LTC2636H10] = { + .channels = ltc2632x10_channels, + .num_channels = 8, + .vref_mv = 4096, + }, + [ID_LTC2636H8] = { + .channels = ltc2632x8_channels, + .num_channels = 8, .vref_mv = 4096, }, }; @@ -287,7 +334,7 @@ static int ltc2632_probe(struct spi_device *spi) indio_dev->info = <c2632_info; indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->channels = chip_info->channels; - indio_dev->num_channels = LTC2632_DAC_CHANNELS; + indio_dev->num_channels = chip_info->num_channels; return iio_device_register(indio_dev); } @@ -312,6 +359,12 @@ static const struct spi_device_id ltc2632_id[] = { { "ltc2632-h12", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2632H12] }, { "ltc2632-h10", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2632H10] }, { "ltc2632-h8", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2632H8] }, + { "ltc2636-l12", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2636L12] }, + { "ltc2636-l10", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2636L10] }, + { "ltc2636-l8", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2636L8] }, + { "ltc2636-h12", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2636H12] }, + { "ltc2636-h10", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2636H10] }, + { "ltc2636-h8", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2636H8] }, {} }; MODULE_DEVICE_TABLE(spi, ltc2632_id); @@ -335,6 +388,24 @@ static const struct of_device_id ltc2632_of_match[] = { }, { .compatible = "lltc,ltc2632-h8", .data = <c2632_chip_info_tbl[ID_LTC2632H8] + }, { + .compatible = "lltc,ltc2636-l12", + .data = <c2632_chip_info_tbl[ID_LTC2636L12] + }, { + .compatible = "lltc,ltc2636-l10", + .data = <c2632_chip_info_tbl[ID_LTC2636L10] + }, { + .compatible = "lltc,ltc2636-l8", + .data = <c2632_chip_info_tbl[ID_LTC2636L8] + }, { + .compatible = "lltc,ltc2636-h12", + .data = <c2632_chip_info_tbl[ID_LTC2636H12] + }, { + .compatible = "lltc,ltc2636-h10", + .data = <c2632_chip_info_tbl[ID_LTC2636H10] + }, { + .compatible = "lltc,ltc2636-h8", + .data = <c2632_chip_info_tbl[ID_LTC2636H8] }, {} }; |