mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 19:55:05 +07:00
84882b0603
Old ADCs, as present on the sam9rl and the sam9g45 don't have a TSMR register and the touchscreen support should be handled differently. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/*
|
|
* Copyright (C) 2011 Free Electrons
|
|
*
|
|
* Licensed under the GPLv2 or later.
|
|
*/
|
|
|
|
#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
|