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iio: adc: adi-axi-adc: add axi_adc_oversampling_ratio_set

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Add support for setting decimation rate.

Reviewed-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Pop Ioan Daniel <pop.ioan-daniel@analog.com>
Link: https://patch.msgid.link/20250605150948.3091827-4-pop.ioan-daniel@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Pop Ioan Daniel 2025-06-05 18:09:41 +03:00 committed by Jonathan Cameron
parent 97e6882ed1
commit dced5bda14
1 changed files with 17 additions and 0 deletions
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17
drivers/iio/adc/adi-axi-adc.c
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@ -86,6 +86,9 @@
#define ADI_AXI_ADC_REG_CHAN_CTRL_3(c) (0x0418 + (c) * 0x40)
#define ADI_AXI_ADC_CHAN_PN_SEL_MASK GENMASK(19, 16)
#define ADI_AXI_ADC_REG_CHAN_USR_CTRL_2(c) (0x0424 + (c) * 0x40)
#define ADI_AXI_ADC_CHAN_USR_CTRL_2_DEC_RATE_N_MASK GENMASK(15, 0)
/* IO Delays */
#define ADI_AXI_ADC_REG_DELAY(l) (0x0800 + (l) * 0x4)
#define AXI_ADC_DELAY_CTRL_MASK GENMASK(4, 0)
@ -248,6 +251,19 @@ static int axi_adc_test_pattern_set(struct iio_backend *back,
}
}
static int axi_adc_oversampling_ratio_set(struct iio_backend *back,
unsigned int chan,
unsigned int rate)
{
struct adi_axi_adc_state *st = iio_backend_get_priv(back);
return regmap_update_bits(st->regmap,
ADI_AXI_ADC_REG_CHAN_USR_CTRL_2(chan),
ADI_AXI_ADC_CHAN_USR_CTRL_2_DEC_RATE_N_MASK,
FIELD_PREP(ADI_AXI_ADC_CHAN_USR_CTRL_2_DEC_RATE_N_MASK,
rate));
}
static int axi_adc_read_chan_status(struct adi_axi_adc_state *st, unsigned int chan,
unsigned int *status)
{
@ -600,6 +616,7 @@ static const struct iio_backend_ops adi_axi_adc_ops = {
.test_pattern_set = axi_adc_test_pattern_set,
.chan_status = axi_adc_chan_status,
.interface_type_get = axi_adc_interface_type_get,
.oversampling_ratio_set = axi_adc_oversampling_ratio_set,
.debugfs_reg_access = iio_backend_debugfs_ptr(axi_adc_reg_access),
.debugfs_print_chan_status = iio_backend_debugfs_ptr(axi_adc_debugfs_print_chan_status),
};