diff options
Diffstat (limited to 'drivers/staging/iio/dac/ad5624r_spi.c')
| -rw-r--r-- | drivers/staging/iio/dac/ad5624r_spi.c | 83 |
1 files changed, 41 insertions, 42 deletions
diff --git a/drivers/staging/iio/dac/ad5624r_spi.c b/drivers/staging/iio/dac/ad5624r_spi.c index a5b3776718e..284d8790036 100644 --- a/drivers/staging/iio/dac/ad5624r_spi.c +++ b/drivers/staging/iio/dac/ad5624r_spi.c @@ -7,7 +7,6 @@ */ #include <linux/interrupt.h> -#include <linux/gpio.h> #include <linux/fs.h> #include <linux/device.h> #include <linux/kernel.h> @@ -15,6 +14,7 @@ #include <linux/slab.h> #include <linux/sysfs.h> #include <linux/regulator/consumer.h> +#include <linux/module.h> #include "../iio.h" #include "../sysfs.h" @@ -172,22 +172,22 @@ static ssize_t ad5624r_show_scale(struct device *dev, return sprintf(buf, "%d.%03d\n", scale_uv / 1000, scale_uv % 1000); } -static IIO_DEVICE_ATTR(out_scale, S_IRUGO, ad5624r_show_scale, NULL, 0); +static IIO_DEVICE_ATTR(out_voltage_scale, S_IRUGO, ad5624r_show_scale, NULL, 0); static IIO_DEV_ATTR_OUT_RAW(0, ad5624r_write_dac, AD5624R_ADDR_DAC0); static IIO_DEV_ATTR_OUT_RAW(1, ad5624r_write_dac, AD5624R_ADDR_DAC1); static IIO_DEV_ATTR_OUT_RAW(2, ad5624r_write_dac, AD5624R_ADDR_DAC2); static IIO_DEV_ATTR_OUT_RAW(3, ad5624r_write_dac, AD5624R_ADDR_DAC3); -static IIO_DEVICE_ATTR(out_powerdown_mode, S_IRUGO | +static IIO_DEVICE_ATTR(out_voltage_powerdown_mode, S_IRUGO | S_IWUSR, ad5624r_read_powerdown_mode, ad5624r_write_powerdown_mode, 0); -static IIO_CONST_ATTR(out_powerdown_mode_available, +static IIO_CONST_ATTR(out_voltage_powerdown_mode_available, "1kohm_to_gnd 100kohm_to_gnd three_state"); #define IIO_DEV_ATTR_DAC_POWERDOWN(_num, _show, _store, _addr) \ - IIO_DEVICE_ATTR(out##_num##_powerdown, \ + IIO_DEVICE_ATTR(out_voltage##_num##_powerdown, \ S_IRUGO | S_IWUSR, _show, _store, _addr) static IIO_DEV_ATTR_DAC_POWERDOWN(0, ad5624r_read_dac_powerdown, @@ -200,17 +200,17 @@ static IIO_DEV_ATTR_DAC_POWERDOWN(3, ad5624r_read_dac_powerdown, ad5624r_write_dac_powerdown, 3); static struct attribute *ad5624r_attributes[] = { - &iio_dev_attr_out0_raw.dev_attr.attr, - &iio_dev_attr_out1_raw.dev_attr.attr, - &iio_dev_attr_out2_raw.dev_attr.attr, - &iio_dev_attr_out3_raw.dev_attr.attr, - &iio_dev_attr_out0_powerdown.dev_attr.attr, - &iio_dev_attr_out1_powerdown.dev_attr.attr, - &iio_dev_attr_out2_powerdown.dev_attr.attr, - &iio_dev_attr_out3_powerdown.dev_attr.attr, - &iio_dev_attr_out_powerdown_mode.dev_attr.attr, - &iio_const_attr_out_powerdown_mode_available.dev_attr.attr, - &iio_dev_attr_out_scale.dev_attr.attr, + &iio_dev_attr_out_voltage0_raw.dev_attr.attr, + &iio_dev_attr_out_voltage1_raw.dev_attr.attr, + &iio_dev_attr_out_voltage2_raw.dev_attr.attr, + &iio_dev_attr_out_voltage3_raw.dev_attr.attr, + &iio_dev_attr_out_voltage0_powerdown.dev_attr.attr, + &iio_dev_attr_out_voltage1_powerdown.dev_attr.attr, + &iio_dev_attr_out_voltage2_powerdown.dev_attr.attr, + &iio_dev_attr_out_voltage3_powerdown.dev_attr.attr, + &iio_dev_attr_out_voltage_powerdown_mode.dev_attr.attr, + &iio_const_attr_out_voltage_powerdown_mode_available.dev_attr.attr, + &iio_dev_attr_out_voltage_scale.dev_attr.attr, NULL, }; @@ -227,24 +227,23 @@ static int __devinit ad5624r_probe(struct spi_device *spi) { struct ad5624r_state *st; struct iio_dev *indio_dev; - struct regulator *reg; int ret, voltage_uv = 0; - reg = regulator_get(&spi->dev, "vcc"); - if (!IS_ERR(reg)) { - ret = regulator_enable(reg); - if (ret) - goto error_put_reg; - - voltage_uv = regulator_get_voltage(reg); - } indio_dev = iio_allocate_device(sizeof(*st)); if (indio_dev == NULL) { ret = -ENOMEM; - goto error_disable_reg; + goto error_ret; } st = iio_priv(indio_dev); - st->reg = reg; + st->reg = regulator_get(&spi->dev, "vcc"); + if (!IS_ERR(st->reg)) { + ret = regulator_enable(st->reg); + if (ret) + goto error_put_reg; + + voltage_uv = regulator_get_voltage(st->reg); + } + spi_set_drvdata(spi, indio_dev); st->chip_info = &ad5624r_chip_info_tbl[spi_get_device_id(spi)->driver_data]; @@ -261,25 +260,25 @@ static int __devinit ad5624r_probe(struct spi_device *spi) indio_dev->info = &ad5624r_info; indio_dev->modes = INDIO_DIRECT_MODE; - ret = iio_device_register(indio_dev); - if (ret) - goto error_free_dev; - ret = ad5624r_spi_write(spi, AD5624R_CMD_INTERNAL_REFER_SETUP, 0, !!voltage_uv, 16); if (ret) - goto error_free_dev; + goto error_disable_reg; + + ret = iio_device_register(indio_dev); + if (ret) + goto error_disable_reg; return 0; -error_free_dev: - iio_free_device(indio_dev); error_disable_reg: - if (!IS_ERR(reg)) - regulator_disable(reg); + if (!IS_ERR(st->reg)) + regulator_disable(st->reg); error_put_reg: - if (!IS_ERR(reg)) - regulator_put(reg); + if (!IS_ERR(st->reg)) + regulator_put(st->reg); + iio_free_device(indio_dev); +error_ret: return ret; } @@ -288,13 +287,13 @@ static int __devexit ad5624r_remove(struct spi_device *spi) { struct iio_dev *indio_dev = spi_get_drvdata(spi); struct ad5624r_state *st = iio_priv(indio_dev); - struct regulator *reg = st->reg; iio_device_unregister(indio_dev); - if (!IS_ERR(reg)) { - regulator_disable(reg); - regulator_put(reg); + if (!IS_ERR(st->reg)) { + regulator_disable(st->reg); + regulator_put(st->reg); } + iio_free_device(indio_dev); return 0; } |