On Fri, 11 Apr 2025 15:36:24 +0300
Antoniu Miclaus <antoniu.miclaus@analog.com> wrote:
> Add support for checking the ADC sync status.
>
> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
> ---
> no changes in v2.
> drivers/iio/adc/adi-axi-adc.c | 20 ++++++++++++++++++++
> 1 file changed, 20 insertions(+)
>
> diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c
> index 017685854895..0d12c0121bbc 100644
> --- a/drivers/iio/adc/adi-axi-adc.c
> +++ b/drivers/iio/adc/adi-axi-adc.c
> @@ -56,6 +56,9 @@
> #define AXI_AD408X_CNTRL_3_SELF_SYNC_EN_MSK BIT(1)
> #define AXI_AD408X_CNTRL_3_FILTER_EN_MSK BIT(0)
>
> +#define ADI_AXI_ADC_REG_SYNC_STATUS 0x0068
> +#define ADI_AXI_ADC_SYNC BIT(0)
> +
> #define ADI_AXI_ADC_REG_DRP_STATUS 0x0074
> #define ADI_AXI_ADC_DRP_LOCKED BIT(17)
>
> @@ -453,6 +456,21 @@ static int axi_adc_ad408x_self_sync_disable(struct iio_backend *back)
> AXI_AD408X_CNTRL_3_SELF_SYNC_EN_MSK);
> }
>
> +static int axi_adc_sync_status_get(struct iio_backend *back, bool *sync_en)
> +{
> + struct adi_axi_adc_state *st = iio_backend_get_priv(back);
> + int ret;
> + u32 val;
> +
> + ret = regmap_read(st->regmap, ADI_AXI_ADC_REG_SYNC_STATUS, &val);
> + if (ret)
> + return ret;
> +
> + *sync_en = (bool)FIELD_GET(ADI_AXI_ADC_SYNC, val);
Trivial but implicit casting from a bool to an int is fine. I.e. drop
the (bool) as it doesn't add anything.
> +
> + return 0;
> +}
> +
> static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back,
> struct iio_dev *indio_dev)
> {
> @@ -600,6 +618,7 @@ 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,
> + .sync_status_get = axi_adc_sync_status_get,
> .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),
> };
> @@ -647,6 +666,7 @@ static const struct iio_backend_ops adi_ad408x_ops = {
> .data_alignment_disable = axi_adc_ad408x_bitslip_disable,
> .self_sync_enable = axi_adc_ad408x_self_sync_enable,
> .self_sync_disable = axi_adc_ad408x_self_sync_disable,
> + .sync_status_get = axi_adc_sync_status_get,
> .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),
> };