Commit fc9156c0 authored by Antoniu Miclaus's avatar Antoniu Miclaus Committed by Jonathan Cameron
Browse files

iio: adc: adi-axi-adc: add interface type 



Add support for getting the interface (CMOS or LVDS) used by the AXI ADC
IP.

Reviewed-by: default avatarNuno Sa <nuno.sa@analog.com>
Reviewed-by: default avatarDavid Lechner <dlechner@baylibre.com>
Signed-off-by: default avatarAntoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250214131955.31973-5-antoniu.miclaus@analog.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 22894e0b

drivers/iio/adc/adi-axi-adc.c

+23 −0
Original line number Diff line number Diff line
@@ -40,6 +40,9 @@ 
#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)
@@ -310,6 +313,25 @@ 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)

{
@@ -456,6 +478,7 @@ 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),

};