1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (C) 2011 Free Electrons 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun #ifndef _AT91_ADC_H_ 7*4882a593Smuzhiyun #define _AT91_ADC_H_ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun enum atmel_adc_ts_type { 10*4882a593Smuzhiyun ATMEL_ADC_TOUCHSCREEN_NONE = 0, 11*4882a593Smuzhiyun ATMEL_ADC_TOUCHSCREEN_4WIRE = 4, 12*4882a593Smuzhiyun ATMEL_ADC_TOUCHSCREEN_5WIRE = 5, 13*4882a593Smuzhiyun }; 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun /** 16*4882a593Smuzhiyun * struct at91_adc_trigger - description of triggers 17*4882a593Smuzhiyun * @name: name of the trigger advertised to the user 18*4882a593Smuzhiyun * @value: value to set in the ADC's trigger setup register 19*4882a593Smuzhiyun to enable the trigger 20*4882a593Smuzhiyun * @is_external: Does the trigger rely on an external pin? 21*4882a593Smuzhiyun */ 22*4882a593Smuzhiyun struct at91_adc_trigger { 23*4882a593Smuzhiyun const char *name; 24*4882a593Smuzhiyun u8 value; 25*4882a593Smuzhiyun bool is_external; 26*4882a593Smuzhiyun }; 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun /** 29*4882a593Smuzhiyun * struct at91_adc_data - platform data for ADC driver 30*4882a593Smuzhiyun * @channels_used: channels in use on the board as a bitmask 31*4882a593Smuzhiyun * @startup_time: startup time of the ADC in microseconds 32*4882a593Smuzhiyun * @trigger_list: Triggers available in the ADC 33*4882a593Smuzhiyun * @trigger_number: Number of triggers available in the ADC 34*4882a593Smuzhiyun * @use_external_triggers: does the board has external triggers availables 35*4882a593Smuzhiyun * @vref: Reference voltage for the ADC in millivolts 36*4882a593Smuzhiyun * @touchscreen_type: If a touchscreen is connected, its type (4 or 5 wires) 37*4882a593Smuzhiyun */ 38*4882a593Smuzhiyun struct at91_adc_data { 39*4882a593Smuzhiyun unsigned long channels_used; 40*4882a593Smuzhiyun u8 startup_time; 41*4882a593Smuzhiyun struct at91_adc_trigger *trigger_list; 42*4882a593Smuzhiyun u8 trigger_number; 43*4882a593Smuzhiyun bool use_external_triggers; 44*4882a593Smuzhiyun u16 vref; 45*4882a593Smuzhiyun enum atmel_adc_ts_type touchscreen_type; 46*4882a593Smuzhiyun }; 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun extern void __init at91_add_device_adc(struct at91_adc_data *data); 49*4882a593Smuzhiyun #endif 50