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IIO: Ingenic JZ47xx: Add xlate cb to retrieve correct channel idx

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Provide an of_xlate callback in order to retrieve the correct channel
specifier index from the IIO channels array.

Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
Tested-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Artur Rojek 2020-07-19 22:53:04 +02:00 committed by Jonathan Cameron
parent 1a99dc4679
commit 155e41efe7
1 changed files with 16 additions and 0 deletions
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16
drivers/iio/adc/ingenic-adc.c
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@ -401,6 +401,21 @@ static int ingenic_adc_read_raw(struct iio_dev *iio_dev,
}
}
static int ingenic_adc_of_xlate(struct iio_dev *iio_dev,
const struct of_phandle_args *iiospec)
{
int i;
if (!iiospec->args_count)
return -EINVAL;
for (i = 0; i < iio_dev->num_channels; ++i)
if (iio_dev->channels[i].channel == iiospec->args[0])
return i;
return -EINVAL;
}
static void ingenic_adc_clk_cleanup(void *data)
{
clk_unprepare(data);
@ -410,6 +425,7 @@ static const struct iio_info ingenic_adc_info = {
.write_raw = ingenic_adc_write_raw,
.read_raw = ingenic_adc_read_raw,
.read_avail = ingenic_adc_read_avail,
.of_xlate = ingenic_adc_of_xlate,
};
static const struct iio_chan_spec ingenic_channels[] = {