| Message ID | 20241101112358.22996-4-antoniu.miclaus@analog.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Headers | show |
| Series | *** Add support for AD485x DAS Family *** | expand |
On 11/1/24 6:23 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> > --- Reviewed-by: David Lechner <dlechner@baylibre.com> > changes in v5: > - use IIO_BACKEND_INTERFACE_SERIAL_CMOS and IIO_BACKEND_INTERFACE_SERIAL_LVDS > drivers/iio/adc/adi-axi-adc.c | 23 +++++++++++++++++++++++ > 1 file changed, 23 insertions(+) > > diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c > index 5c8c87eb36d1..f6475bc93796 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) > > @@ -290,6 +293,25 @@ 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) FIELD_GET() also works here. > + *type = IIO_BACKEND_INTERFACE_SERIAL_CMOS; > + else > + *type = IIO_BACKEND_INTERFACE_SERIAL_LVDS; > + > + return 0; > +} > + > static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back, > struct iio_dev *indio_dev) > { > @@ -337,6 +359,7 @@ static const struct iio_backend_ops adi_axi_adc_ops = { > .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, > .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), > };
diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c index 5c8c87eb36d1..f6475bc93796 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) @@ -290,6 +293,25 @@ 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_SERIAL_CMOS; + else + *type = IIO_BACKEND_INTERFACE_SERIAL_LVDS; + + return 0; +} + static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back, struct iio_dev *indio_dev) { @@ -337,6 +359,7 @@ static const struct iio_backend_ops adi_axi_adc_ops = { .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, .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), };
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 v5: - use IIO_BACKEND_INTERFACE_SERIAL_CMOS and IIO_BACKEND_INTERFACE_SERIAL_LVDS drivers/iio/adc/adi-axi-adc.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)