cregit-Linux how code gets into the kernel

Release 4.12 include/linux/platform_data/at91_adc.h

/*
 * 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

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