| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * Copyright (C) 2011 Free Electrons |
| */ |
| |
| #ifndef _AT91_ADC_H_ |
| #define _AT91_ADC_H_ |
| |
| enum atmel_adc_ts_type { |
| ATMEL_ADC_TOUCHSCREEN_NONE = 0, |
| ATMEL_ADC_TOUCHSCREEN_4WIRE = 4, |
| ATMEL_ADC_TOUCHSCREEN_5WIRE = 5, |
| }; |
| |
| /** |
| * struct at91_adc_trigger - description of triggers |
| * @name: name of the trigger advertised to the user |
| * @value: value to set in the ADC's trigger setup register |
| to enable the trigger |
| * @is_external: Does the trigger rely on an external pin? |
| */ |
| struct at91_adc_trigger { |
| const char *name; |
| u8 value; |
| bool is_external; |
| }; |
| |
| /** |
| * struct at91_adc_data - platform data for ADC driver |
| * @channels_used: channels in use on the board as a bitmask |
| * @startup_time: startup time of the ADC in microseconds |
| * @trigger_list: Triggers available in the ADC |
| * @trigger_number: Number of triggers available in the ADC |
| * @use_external_triggers: does the board has external triggers availables |
| * @vref: Reference voltage for the ADC in millivolts |
| * @touchscreen_type: If a touchscreen is connected, its type (4 or 5 wires) |
| */ |
| struct at91_adc_data { |
| unsigned long channels_used; |
| u8 startup_time; |
| struct at91_adc_trigger *trigger_list; |
| u8 trigger_number; |
| bool use_external_triggers; |
| u16 vref; |
| enum atmel_adc_ts_type touchscreen_type; |
| }; |
| |
| extern void __init at91_add_device_adc(struct at91_adc_data *data); |
| #endif |
