483 lines
12 KiB
C
483 lines
12 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/*
|
||
|
|
* LTC2632 Digital to analog convertors spi driver
|
||
|
|
*
|
||
|
|
* Copyright 2017 Maxime Roussin-Bélanger
|
||
|
|
* expanded by Silvan Murer <silvan.murer@gmail.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/device.h>
|
||
|
|
#include <linux/spi/spi.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/iio/iio.h>
|
||
|
|
#include <linux/regulator/consumer.h>
|
||
|
|
|
||
|
|
#include <asm/unaligned.h>
|
||
|
|
|
||
|
|
#define LTC2632_CMD_WRITE_INPUT_N 0x0
|
||
|
|
#define LTC2632_CMD_UPDATE_DAC_N 0x1
|
||
|
|
#define LTC2632_CMD_WRITE_INPUT_N_UPDATE_ALL 0x2
|
||
|
|
#define LTC2632_CMD_WRITE_INPUT_N_UPDATE_N 0x3
|
||
|
|
#define LTC2632_CMD_POWERDOWN_DAC_N 0x4
|
||
|
|
#define LTC2632_CMD_POWERDOWN_CHIP 0x5
|
||
|
|
#define LTC2632_CMD_INTERNAL_REFER 0x6
|
||
|
|
#define LTC2632_CMD_EXTERNAL_REFER 0x7
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct ltc2632_chip_info - chip specific information
|
||
|
|
* @channels: channel spec for the DAC
|
||
|
|
* @num_channels: DAC channel count of the chip
|
||
|
|
* @vref_mv: internal reference voltage
|
||
|
|
*/
|
||
|
|
struct ltc2632_chip_info {
|
||
|
|
const struct iio_chan_spec *channels;
|
||
|
|
const size_t num_channels;
|
||
|
|
const int vref_mv;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct ltc2632_state - driver instance specific data
|
||
|
|
* @spi_dev: pointer to the spi_device struct
|
||
|
|
* @powerdown_cache_mask: used to show current channel powerdown state
|
||
|
|
* @vref_mv: used reference voltage (internal or external)
|
||
|
|
* @vref_reg: regulator for the reference voltage
|
||
|
|
*/
|
||
|
|
struct ltc2632_state {
|
||
|
|
struct spi_device *spi_dev;
|
||
|
|
unsigned int powerdown_cache_mask;
|
||
|
|
int vref_mv;
|
||
|
|
struct regulator *vref_reg;
|
||
|
|
};
|
||
|
|
|
||
|
|
enum ltc2632_supported_device_ids {
|
||
|
|
ID_LTC2632L12,
|
||
|
|
ID_LTC2632L10,
|
||
|
|
ID_LTC2632L8,
|
||
|
|
ID_LTC2632H12,
|
||
|
|
ID_LTC2632H10,
|
||
|
|
ID_LTC2632H8,
|
||
|
|
ID_LTC2634L12,
|
||
|
|
ID_LTC2634L10,
|
||
|
|
ID_LTC2634L8,
|
||
|
|
ID_LTC2634H12,
|
||
|
|
ID_LTC2634H10,
|
||
|
|
ID_LTC2634H8,
|
||
|
|
ID_LTC2636L12,
|
||
|
|
ID_LTC2636L10,
|
||
|
|
ID_LTC2636L8,
|
||
|
|
ID_LTC2636H12,
|
||
|
|
ID_LTC2636H10,
|
||
|
|
ID_LTC2636H8,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int ltc2632_spi_write(struct spi_device *spi,
|
||
|
|
u8 cmd, u8 addr, u16 val, u8 shift)
|
||
|
|
{
|
||
|
|
u32 data;
|
||
|
|
u8 msg[3];
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The input shift register is 24 bits wide.
|
||
|
|
* The next four are the command bits, C3 to C0,
|
||
|
|
* followed by the 4-bit DAC address, A3 to A0, and then the
|
||
|
|
* 12-, 10-, 8-bit data-word. The data-word comprises the 12-,
|
||
|
|
* 10-, 8-bit input code followed by 4, 6, or 8 don't care bits.
|
||
|
|
*/
|
||
|
|
data = (cmd << 20) | (addr << 16) | (val << shift);
|
||
|
|
put_unaligned_be24(data, &msg[0]);
|
||
|
|
|
||
|
|
return spi_write(spi, msg, sizeof(msg));
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ltc2632_read_raw(struct iio_dev *indio_dev,
|
||
|
|
struct iio_chan_spec const *chan,
|
||
|
|
int *val,
|
||
|
|
int *val2,
|
||
|
|
long m)
|
||
|
|
{
|
||
|
|
const struct ltc2632_state *st = iio_priv(indio_dev);
|
||
|
|
|
||
|
|
switch (m) {
|
||
|
|
case IIO_CHAN_INFO_SCALE:
|
||
|
|
*val = st->vref_mv;
|
||
|
|
*val2 = chan->scan_type.realbits;
|
||
|
|
return IIO_VAL_FRACTIONAL_LOG2;
|
||
|
|
}
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ltc2632_write_raw(struct iio_dev *indio_dev,
|
||
|
|
struct iio_chan_spec const *chan,
|
||
|
|
int val,
|
||
|
|
int val2,
|
||
|
|
long mask)
|
||
|
|
{
|
||
|
|
struct ltc2632_state *st = iio_priv(indio_dev);
|
||
|
|
|
||
|
|
switch (mask) {
|
||
|
|
case IIO_CHAN_INFO_RAW:
|
||
|
|
if (val >= (1 << chan->scan_type.realbits) || val < 0)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
return ltc2632_spi_write(st->spi_dev,
|
||
|
|
LTC2632_CMD_WRITE_INPUT_N_UPDATE_N,
|
||
|
|
chan->address, val,
|
||
|
|
chan->scan_type.shift);
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t ltc2632_read_dac_powerdown(struct iio_dev *indio_dev,
|
||
|
|
uintptr_t private,
|
||
|
|
const struct iio_chan_spec *chan,
|
||
|
|
char *buf)
|
||
|
|
{
|
||
|
|
struct ltc2632_state *st = iio_priv(indio_dev);
|
||
|
|
|
||
|
|
return sysfs_emit(buf, "%d\n",
|
||
|
|
!!(st->powerdown_cache_mask & (1 << chan->channel)));
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t ltc2632_write_dac_powerdown(struct iio_dev *indio_dev,
|
||
|
|
uintptr_t private,
|
||
|
|
const struct iio_chan_spec *chan,
|
||
|
|
const char *buf,
|
||
|
|
size_t len)
|
||
|
|
{
|
||
|
|
bool pwr_down;
|
||
|
|
int ret;
|
||
|
|
struct ltc2632_state *st = iio_priv(indio_dev);
|
||
|
|
|
||
|
|
ret = strtobool(buf, &pwr_down);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
if (pwr_down)
|
||
|
|
st->powerdown_cache_mask |= (1 << chan->channel);
|
||
|
|
else
|
||
|
|
st->powerdown_cache_mask &= ~(1 << chan->channel);
|
||
|
|
|
||
|
|
ret = ltc2632_spi_write(st->spi_dev,
|
||
|
|
LTC2632_CMD_POWERDOWN_DAC_N,
|
||
|
|
chan->channel, 0, 0);
|
||
|
|
|
||
|
|
return ret ? ret : len;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct iio_info ltc2632_info = {
|
||
|
|
.write_raw = ltc2632_write_raw,
|
||
|
|
.read_raw = ltc2632_read_raw,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct iio_chan_spec_ext_info ltc2632_ext_info[] = {
|
||
|
|
{
|
||
|
|
.name = "powerdown",
|
||
|
|
.read = ltc2632_read_dac_powerdown,
|
||
|
|
.write = ltc2632_write_dac_powerdown,
|
||
|
|
.shared = IIO_SEPARATE,
|
||
|
|
},
|
||
|
|
{ },
|
||
|
|
};
|
||
|
|
|
||
|
|
#define LTC2632_CHANNEL(_chan, _bits) { \
|
||
|
|
.type = IIO_VOLTAGE, \
|
||
|
|
.indexed = 1, \
|
||
|
|
.output = 1, \
|
||
|
|
.channel = (_chan), \
|
||
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
|
||
|
|
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
|
||
|
|
.address = (_chan), \
|
||
|
|
.scan_type = { \
|
||
|
|
.realbits = (_bits), \
|
||
|
|
.shift = 16 - (_bits), \
|
||
|
|
}, \
|
||
|
|
.ext_info = ltc2632_ext_info, \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define DECLARE_LTC2632_CHANNELS(_name, _bits) \
|
||
|
|
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);
|
||
|
|
static DECLARE_LTC2632_CHANNELS(ltc2632x10, 10);
|
||
|
|
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_LTC2634L12] = {
|
||
|
|
.channels = ltc2632x12_channels,
|
||
|
|
.num_channels = 4,
|
||
|
|
.vref_mv = 2500,
|
||
|
|
},
|
||
|
|
[ID_LTC2634L10] = {
|
||
|
|
.channels = ltc2632x10_channels,
|
||
|
|
.num_channels = 4,
|
||
|
|
.vref_mv = 2500,
|
||
|
|
},
|
||
|
|
[ID_LTC2634L8] = {
|
||
|
|
.channels = ltc2632x8_channels,
|
||
|
|
.num_channels = 4,
|
||
|
|
.vref_mv = 2500,
|
||
|
|
},
|
||
|
|
[ID_LTC2634H12] = {
|
||
|
|
.channels = ltc2632x12_channels,
|
||
|
|
.num_channels = 4,
|
||
|
|
.vref_mv = 4096,
|
||
|
|
},
|
||
|
|
[ID_LTC2634H10] = {
|
||
|
|
.channels = ltc2632x10_channels,
|
||
|
|
.num_channels = 4,
|
||
|
|
.vref_mv = 4096,
|
||
|
|
},
|
||
|
|
[ID_LTC2634H8] = {
|
||
|
|
.channels = ltc2632x8_channels,
|
||
|
|
.num_channels = 4,
|
||
|
|
.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,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
static int ltc2632_probe(struct spi_device *spi)
|
||
|
|
{
|
||
|
|
struct ltc2632_state *st;
|
||
|
|
struct iio_dev *indio_dev;
|
||
|
|
struct ltc2632_chip_info *chip_info;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
|
||
|
|
if (!indio_dev)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
st = iio_priv(indio_dev);
|
||
|
|
|
||
|
|
spi_set_drvdata(spi, indio_dev);
|
||
|
|
st->spi_dev = spi;
|
||
|
|
|
||
|
|
chip_info = (struct ltc2632_chip_info *)
|
||
|
|
spi_get_device_id(spi)->driver_data;
|
||
|
|
|
||
|
|
st->vref_reg = devm_regulator_get_optional(&spi->dev, "vref");
|
||
|
|
if (PTR_ERR(st->vref_reg) == -ENODEV) {
|
||
|
|
/* use internal reference voltage */
|
||
|
|
st->vref_reg = NULL;
|
||
|
|
st->vref_mv = chip_info->vref_mv;
|
||
|
|
|
||
|
|
ret = ltc2632_spi_write(spi, LTC2632_CMD_INTERNAL_REFER,
|
||
|
|
0, 0, 0);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(&spi->dev,
|
||
|
|
"Set internal reference command failed, %d\n",
|
||
|
|
ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
} else if (IS_ERR(st->vref_reg)) {
|
||
|
|
dev_err(&spi->dev,
|
||
|
|
"Error getting voltage reference regulator\n");
|
||
|
|
return PTR_ERR(st->vref_reg);
|
||
|
|
} else {
|
||
|
|
/* use external reference voltage */
|
||
|
|
ret = regulator_enable(st->vref_reg);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(&spi->dev,
|
||
|
|
"enable reference regulator failed, %d\n",
|
||
|
|
ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
st->vref_mv = regulator_get_voltage(st->vref_reg) / 1000;
|
||
|
|
|
||
|
|
ret = ltc2632_spi_write(spi, LTC2632_CMD_EXTERNAL_REFER,
|
||
|
|
0, 0, 0);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(&spi->dev,
|
||
|
|
"Set external reference command failed, %d\n",
|
||
|
|
ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
indio_dev->name = dev_of_node(&spi->dev) ? dev_of_node(&spi->dev)->name
|
||
|
|
: spi_get_device_id(spi)->name;
|
||
|
|
indio_dev->info = <c2632_info;
|
||
|
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
||
|
|
indio_dev->channels = chip_info->channels;
|
||
|
|
indio_dev->num_channels = chip_info->num_channels;
|
||
|
|
|
||
|
|
return iio_device_register(indio_dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ltc2632_remove(struct spi_device *spi)
|
||
|
|
{
|
||
|
|
struct iio_dev *indio_dev = spi_get_drvdata(spi);
|
||
|
|
struct ltc2632_state *st = iio_priv(indio_dev);
|
||
|
|
|
||
|
|
iio_device_unregister(indio_dev);
|
||
|
|
|
||
|
|
if (st->vref_reg)
|
||
|
|
regulator_disable(st->vref_reg);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct spi_device_id ltc2632_id[] = {
|
||
|
|
{ "ltc2632-l12", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2632L12] },
|
||
|
|
{ "ltc2632-l10", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2632L10] },
|
||
|
|
{ "ltc2632-l8", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2632L8] },
|
||
|
|
{ "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] },
|
||
|
|
{ "ltc2634-l12", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2634L12] },
|
||
|
|
{ "ltc2634-l10", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2634L10] },
|
||
|
|
{ "ltc2634-l8", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2634L8] },
|
||
|
|
{ "ltc2634-h12", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2634H12] },
|
||
|
|
{ "ltc2634-h10", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2634H10] },
|
||
|
|
{ "ltc2634-h8", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2634H8] },
|
||
|
|
{ "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);
|
||
|
|
|
||
|
|
static const struct of_device_id ltc2632_of_match[] = {
|
||
|
|
{
|
||
|
|
.compatible = "lltc,ltc2632-l12",
|
||
|
|
.data = <c2632_chip_info_tbl[ID_LTC2632L12]
|
||
|
|
}, {
|
||
|
|
.compatible = "lltc,ltc2632-l10",
|
||
|
|
.data = <c2632_chip_info_tbl[ID_LTC2632L10]
|
||
|
|
}, {
|
||
|
|
.compatible = "lltc,ltc2632-l8",
|
||
|
|
.data = <c2632_chip_info_tbl[ID_LTC2632L8]
|
||
|
|
}, {
|
||
|
|
.compatible = "lltc,ltc2632-h12",
|
||
|
|
.data = <c2632_chip_info_tbl[ID_LTC2632H12]
|
||
|
|
}, {
|
||
|
|
.compatible = "lltc,ltc2632-h10",
|
||
|
|
.data = <c2632_chip_info_tbl[ID_LTC2632H10]
|
||
|
|
}, {
|
||
|
|
.compatible = "lltc,ltc2632-h8",
|
||
|
|
.data = <c2632_chip_info_tbl[ID_LTC2632H8]
|
||
|
|
}, {
|
||
|
|
.compatible = "lltc,ltc2634-l12",
|
||
|
|
.data = <c2632_chip_info_tbl[ID_LTC2634L12]
|
||
|
|
}, {
|
||
|
|
.compatible = "lltc,ltc2634-l10",
|
||
|
|
.data = <c2632_chip_info_tbl[ID_LTC2634L10]
|
||
|
|
}, {
|
||
|
|
.compatible = "lltc,ltc2634-l8",
|
||
|
|
.data = <c2632_chip_info_tbl[ID_LTC2634L8]
|
||
|
|
}, {
|
||
|
|
.compatible = "lltc,ltc2634-h12",
|
||
|
|
.data = <c2632_chip_info_tbl[ID_LTC2634H12]
|
||
|
|
}, {
|
||
|
|
.compatible = "lltc,ltc2634-h10",
|
||
|
|
.data = <c2632_chip_info_tbl[ID_LTC2634H10]
|
||
|
|
}, {
|
||
|
|
.compatible = "lltc,ltc2634-h8",
|
||
|
|
.data = <c2632_chip_info_tbl[ID_LTC2634H8]
|
||
|
|
}, {
|
||
|
|
.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]
|
||
|
|
},
|
||
|
|
{}
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(of, ltc2632_of_match);
|
||
|
|
|
||
|
|
static struct spi_driver ltc2632_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = "ltc2632",
|
||
|
|
.of_match_table = of_match_ptr(ltc2632_of_match),
|
||
|
|
},
|
||
|
|
.probe = ltc2632_probe,
|
||
|
|
.remove = ltc2632_remove,
|
||
|
|
.id_table = ltc2632_id,
|
||
|
|
};
|
||
|
|
module_spi_driver(ltc2632_driver);
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Maxime Roussin-Belanger <maxime.roussinbelanger@gmail.com>");
|
||
|
|
MODULE_DESCRIPTION("LTC2632 DAC SPI driver");
|
||
|
|
MODULE_LICENSE("GPL v2");
|