/* Channel IO */
static int isl29028_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val, int val2, long mask)
{
struct isl29028_chip *chip = iio_priv(indio_dev);
struct device *dev = regmap_get_device(chip->regmap);
int ret = -EINVAL;
mutex_lock(&chip->lock);
switch (chan->type) {
case IIO_PROXIMITY:
if (mask != IIO_CHAN_INFO_SAMP_FREQ) {
dev_err(dev,
"proximity: mask value 0x%08lx not supported\n",
mask);
break;
}
if (val < 1 || val > 100) {
dev_err(dev,
"Samp_freq %d is not in range[1:100]\n", val);
break;
}
ret = isl29028_set_proxim_sampling(chip, val);
if (ret < 0) {
dev_err(dev,
"Setting proximity samp_freq fail, err %d\n",
ret);
break;
}
chip->prox_sampling = val;
break;
case IIO_LIGHT:
if (mask != IIO_CHAN_INFO_SCALE) {
dev_err(dev,
"light: mask value 0x%08lx not supported\n",
mask);
break;
}
if ((val != 125) && (val != 2000)) {
dev_err(dev,
"lux scale %d is invalid [125, 2000]\n", val);
break;
}
ret = isl29028_set_als_scale(chip, val);
if (ret < 0) {
dev_err(dev,
"Setting lux scale fail with error %d\n", ret);
break;
}
chip->lux_scale = val;
break;
default:
dev_err(dev, "Unsupported channel type\n");
break;
}
mutex_unlock(&chip->lock);
return ret;
}
static int isl29028_chip_init(struct isl29028_chip *chip)
{
int ret;
chip->enable_prox = false;
chip->prox_sampling = 20;
chip->lux_scale = 2000;
chip->als_ir_mode = MODE_NONE;
ret = regmap_write(chip->regmap, ISL29028_REG_TEST1_MODE, 0x0);
if (ret < 0) {
dev_err(chip->dev, "%s(): write to reg %d failed, err = %d\n",
__func__, ISL29028_REG_TEST1_MODE, ret);
return ret;
}
ret = regmap_write(chip->regmap, ISL29028_REG_TEST2_MODE, 0x0);
if (ret < 0) {
dev_err(chip->dev, "%s(): write to reg %d failed, err = %d\n",
__func__, ISL29028_REG_TEST2_MODE, ret);
return ret;
}
ret = regmap_write(chip->regmap, ISL29028_REG_CONFIGURE, 0x0);
if (ret < 0) {
dev_err(chip->dev, "%s(): write to reg %d failed, err = %d\n",
__func__, ISL29028_REG_CONFIGURE, ret);
return ret;
}
ret = isl29028_set_proxim_sampling(chip, chip->prox_sampling);
if (ret < 0) {
dev_err(chip->dev, "setting the proximity, err = %d\n",
ret);
return ret;
}
ret = isl29028_set_als_scale(chip, chip->lux_scale);
if (ret < 0)
dev_err(chip->dev,
"setting als scale failed, err = %d\n", ret);
return ret;
}
