Messages in this thread Patch in this message |  | | From | Artur Rojek <> | Subject | [PATCH v8 3/6] IIO: Ingenic JZ47xx: Add xlate cb to retrieve correct channel idx | Date | Thu, 9 Jul 2020 17:21:57 +0200 |
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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> ---
Changes:
v2-v8: no change
drivers/iio/adc/ingenic-adc.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/drivers/iio/adc/ingenic-adc.c b/drivers/iio/adc/ingenic-adc.c index c1946a9f1cca..89019fb59d48 100644 --- a/drivers/iio/adc/ingenic-adc.c +++ b/drivers/iio/adc/ingenic-adc.c @@ -400,6 +400,21 @@ 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); @@ -409,6 +424,7 @@ 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[] = { -- 2.27.0
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