diff options
Diffstat (limited to 'drivers/iio/adc/ltc2497.c')
| -rw-r--r-- | drivers/iio/adc/ltc2497.c | 54 |
1 files changed, 35 insertions, 19 deletions
diff --git a/drivers/iio/adc/ltc2497.c b/drivers/iio/adc/ltc2497.c index 2691b10023f5..5bf8011dcde9 100644 --- a/drivers/iio/adc/ltc2497.c +++ b/drivers/iio/adc/ltc2497.c @@ -11,6 +11,7 @@ #include <linux/delay.h> #include <linux/i2c.h> #include <linux/iio/iio.h> +#include <linux/iio/driver.h> #include <linux/iio/sysfs.h> #include <linux/module.h> #include <linux/of.h> @@ -127,13 +128,14 @@ static int ltc2497_read_raw(struct iio_dev *indio_dev, } } -#define LTC2497_CHAN(_chan, _addr) { \ +#define LTC2497_CHAN(_chan, _addr, _ds_name) { \ .type = IIO_VOLTAGE, \ .indexed = 1, \ .channel = (_chan), \ .address = (_addr | (_chan / 2) | ((_chan & 1) ? LTC2497_SIGN : 0)), \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ + .datasheet_name = (_ds_name), \ } #define LTC2497_CHAN_DIFF(_chan, _addr) { \ @@ -148,22 +150,22 @@ static int ltc2497_read_raw(struct iio_dev *indio_dev, } static const struct iio_chan_spec ltc2497_channel[] = { - LTC2497_CHAN(0, LTC2497_SGL), - LTC2497_CHAN(1, LTC2497_SGL), - LTC2497_CHAN(2, LTC2497_SGL), - LTC2497_CHAN(3, LTC2497_SGL), - LTC2497_CHAN(4, LTC2497_SGL), - LTC2497_CHAN(5, LTC2497_SGL), - LTC2497_CHAN(6, LTC2497_SGL), - LTC2497_CHAN(7, LTC2497_SGL), - LTC2497_CHAN(8, LTC2497_SGL), - LTC2497_CHAN(9, LTC2497_SGL), - LTC2497_CHAN(10, LTC2497_SGL), - LTC2497_CHAN(11, LTC2497_SGL), - LTC2497_CHAN(12, LTC2497_SGL), - LTC2497_CHAN(13, LTC2497_SGL), - LTC2497_CHAN(14, LTC2497_SGL), - LTC2497_CHAN(15, LTC2497_SGL), + LTC2497_CHAN(0, LTC2497_SGL, "CH0"), + LTC2497_CHAN(1, LTC2497_SGL, "CH1"), + LTC2497_CHAN(2, LTC2497_SGL, "CH2"), + LTC2497_CHAN(3, LTC2497_SGL, "CH3"), + LTC2497_CHAN(4, LTC2497_SGL, "CH4"), + LTC2497_CHAN(5, LTC2497_SGL, "CH5"), + LTC2497_CHAN(6, LTC2497_SGL, "CH6"), + LTC2497_CHAN(7, LTC2497_SGL, "CH7"), + LTC2497_CHAN(8, LTC2497_SGL, "CH8"), + LTC2497_CHAN(9, LTC2497_SGL, "CH9"), + LTC2497_CHAN(10, LTC2497_SGL, "CH10"), + LTC2497_CHAN(11, LTC2497_SGL, "CH11"), + LTC2497_CHAN(12, LTC2497_SGL, "CH12"), + LTC2497_CHAN(13, LTC2497_SGL, "CH13"), + LTC2497_CHAN(14, LTC2497_SGL, "CH14"), + LTC2497_CHAN(15, LTC2497_SGL, "CH15"), LTC2497_CHAN_DIFF(0, LTC2497_DIFF), LTC2497_CHAN_DIFF(1, LTC2497_DIFF), LTC2497_CHAN_DIFF(2, LTC2497_DIFF), @@ -192,6 +194,7 @@ static int ltc2497_probe(struct i2c_client *client, { struct iio_dev *indio_dev; struct ltc2497_st *st; + struct iio_map *plat_data; int ret; if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C | @@ -221,19 +224,31 @@ static int ltc2497_probe(struct i2c_client *client, if (ret < 0) return ret; + if (client->dev.platform_data) { + plat_data = ((struct iio_map *)client->dev.platform_data); + ret = iio_map_array_register(indio_dev, plat_data); + if (ret) { + dev_err(&indio_dev->dev, "iio map err: %d\n", ret); + goto err_regulator_disable; + } + } + ret = i2c_smbus_write_byte(st->client, LTC2497_CONFIG_DEFAULT); if (ret < 0) - goto err_regulator_disable; + goto err_array_unregister; st->addr_prev = LTC2497_CONFIG_DEFAULT; st->time_prev = ktime_get(); ret = iio_device_register(indio_dev); if (ret < 0) - goto err_regulator_disable; + goto err_array_unregister; return 0; +err_array_unregister: + iio_map_array_unregister(indio_dev); + err_regulator_disable: regulator_disable(st->ref); @@ -245,6 +260,7 @@ static int ltc2497_remove(struct i2c_client *client) struct iio_dev *indio_dev = i2c_get_clientdata(client); struct ltc2497_st *st = iio_priv(indio_dev); + iio_map_array_unregister(indio_dev); iio_device_unregister(indio_dev); regulator_disable(st->ref); |