| Message ID | 20241018104210.51659-3-antoniu.miclaus@analog.com |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | [v4,1/6] iio: backend: add API for interface get | expand |
On 10/18/24 5:42 AM, Antoniu Miclaus wrote: > Add support for getting the interface (CMOS or LVDS) used by the AXI ADC > IP. > > Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> > --- ... > +static int axi_adc_interface_type_get(struct iio_backend *back, > + enum iio_backend_interface_type *type) > +{ > + struct adi_axi_adc_state *st = iio_backend_get_priv(back); > + unsigned int val; > + int ret; > + > + ret = regmap_read(st->regmap, ADI_AXI_ADC_REG_CONFIG, &val); > + if (ret) > + return ret; > + > + if (val & ADI_AXI_ADC_REG_CONFIG_CMOS_OR_LVDS_N) > + *type = IIO_BACKEND_INTERFACE_CMOS; > + else > + *type = IIO_BACKEND_INTERFACE_LVDS; These should be the more specific IIO_BACKEND_INTERFACE_SERIAL_CMOS and IIO_BACKEND_INTERFACE_SERIAL_LVDS. > + > + return 0; > +} > + > static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back, > struct iio_dev *indio_dev) > { > @@ -285,6 +307,7 @@ static const struct iio_backend_ops adi_axi_adc_generic = { > .iodelay_set = axi_adc_iodelays_set, > .test_pattern_set = axi_adc_test_pattern_set, > .chan_status = axi_adc_chan_status, > + .interface_type_get = axi_adc_interface_type_get, > }; > > static int adi_axi_adc_probe(struct platform_device *pdev)
diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c index 21ce7564e83d..ff48f26e02a3 100644 --- a/drivers/iio/adc/adi-axi-adc.c +++ b/drivers/iio/adc/adi-axi-adc.c @@ -39,6 +39,9 @@ #define ADI_AXI_REG_RSTN_MMCM_RSTN BIT(1) #define ADI_AXI_REG_RSTN_RSTN BIT(0) +#define ADI_AXI_ADC_REG_CONFIG 0x000c +#define ADI_AXI_ADC_REG_CONFIG_CMOS_OR_LVDS_N BIT(7) + #define ADI_AXI_ADC_REG_CTRL 0x0044 #define ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK BIT(1) @@ -249,6 +252,25 @@ static int axi_adc_chan_disable(struct iio_backend *back, unsigned int chan) ADI_AXI_REG_CHAN_CTRL_ENABLE); } +static int axi_adc_interface_type_get(struct iio_backend *back, + enum iio_backend_interface_type *type) +{ + struct adi_axi_adc_state *st = iio_backend_get_priv(back); + unsigned int val; + int ret; + + ret = regmap_read(st->regmap, ADI_AXI_ADC_REG_CONFIG, &val); + if (ret) + return ret; + + if (val & ADI_AXI_ADC_REG_CONFIG_CMOS_OR_LVDS_N) + *type = IIO_BACKEND_INTERFACE_CMOS; + else + *type = IIO_BACKEND_INTERFACE_LVDS; + + return 0; +} + static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back, struct iio_dev *indio_dev) { @@ -285,6 +307,7 @@ static const struct iio_backend_ops adi_axi_adc_generic = { .iodelay_set = axi_adc_iodelays_set, .test_pattern_set = axi_adc_test_pattern_set, .chan_status = axi_adc_chan_status, + .interface_type_get = axi_adc_interface_type_get, }; static int adi_axi_adc_probe(struct platform_device *pdev)
Add support for getting the interface (CMOS or LVDS) used by the AXI ADC IP. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> --- changes in v4: - minor typo in commit message. drivers/iio/adc/adi-axi-adc.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)