1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Analog Devices Generic AXI ADC IP core driver/library 4 * Link: https://wiki.analog.com/resources/fpga/docs/axi_adc_ip 5 * 6 * Copyright 2012-2020 Analog Devices Inc. 7 */ 8 #ifndef __ADI_AXI_ADC_H__ 9 #define __ADI_AXI_ADC_H__ 10 11 struct device; 12 struct iio_chan_spec; 13 14 /** 15 * struct adi_axi_adc_chip_info - Chip specific information 16 * @name Chip name 17 * @id Chip ID (usually product ID) 18 * @channels Channel specifications of type @struct iio_chan_spec 19 * @num_channels Number of @channels 20 * @scale_table Supported scales by the chip; tuples of 2 ints 21 * @num_scales Number of scales in the table 22 * @max_rate Maximum sampling rate supported by the device 23 */ 24 struct adi_axi_adc_chip_info { 25 const char *name; 26 unsigned int id; 27 28 const struct iio_chan_spec *channels; 29 unsigned int num_channels; 30 31 const unsigned int (*scale_table)[2]; 32 int num_scales; 33 34 unsigned long max_rate; 35 }; 36 37 /** 38 * struct adi_axi_adc_conv - data of the ADC attached to the AXI ADC 39 * @chip_info chip info details for the client ADC 40 * @preenable_setup op to run in the client before enabling the AXI ADC 41 * @reg_access IIO debugfs_reg_access hook for the client ADC 42 * @read_raw IIO read_raw hook for the client ADC 43 * @write_raw IIO write_raw hook for the client ADC 44 * @read_avail IIO read_avail hook for the client ADC 45 */ 46 struct adi_axi_adc_conv { 47 const struct adi_axi_adc_chip_info *chip_info; 48 49 int (*preenable_setup)(struct adi_axi_adc_conv *conv); 50 int (*reg_access)(struct adi_axi_adc_conv *conv, unsigned int reg, 51 unsigned int writeval, unsigned int *readval); 52 int (*read_raw)(struct adi_axi_adc_conv *conv, 53 struct iio_chan_spec const *chan, 54 int *val, int *val2, long mask); 55 int (*write_raw)(struct adi_axi_adc_conv *conv, 56 struct iio_chan_spec const *chan, 57 int val, int val2, long mask); 58 int (*read_avail)(struct adi_axi_adc_conv *conv, 59 struct iio_chan_spec const *chan, 60 const int **val, int *type, int *length, long mask); 61 }; 62 63 struct adi_axi_adc_conv *devm_adi_axi_adc_conv_register(struct device *dev, 64 size_t sizeof_priv); 65 66 void *adi_axi_adc_conv_priv(struct adi_axi_adc_conv *conv); 67 68 #endif 69