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r: 304653
b: refs/heads/master
c: aaeb6df
h: refs/heads/master
i:
  304651: 1049af0
v: v3
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Maxime Ripard authored and Greg Kroah-Hartman committed May 14, 2012
1 parent 67bfae1 commit 90f3b89
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2 changes: 1 addition & 1 deletion [refs]
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refs/heads/master: e71d42e03c60d215bde295d2b986bbc96878c7d6
refs/heads/master: aaeb6dfff02f9c1077c2a09c45b99f6255ef9159
61 changes: 61 additions & 0 deletions trunk/include/linux/platform_data/at91_adc.h
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/*
* Copyright (C) 2011 Free Electrons
*
* Licensed under the GPLv2 or later.
*/

#ifndef _AT91_ADC_H_
#define _AT91_ADC_H_

/**
* struct at91_adc_reg_desc - Various informations relative to registers
* @channel_base: Base offset for the channel data registers
* @drdy_mask: Mask of the DRDY field in the relevant registers
(Interruptions registers mostly)
* @status_register: Offset of the Interrupt Status Register
* @trigger_register: Offset of the Trigger setup register
*/
struct at91_adc_reg_desc {
u8 channel_base;
u32 drdy_mask;
u8 status_register;
u8 trigger_register;
};

/**
* 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
* @num_channels: global number of channels available on the board
* @registers: Registers definition on the board
* @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
*/
struct at91_adc_data {
unsigned long channels_used;
u8 num_channels;
struct at91_adc_reg_desc *registers;
u8 startup_time;
struct at91_adc_trigger *trigger_list;
u8 trigger_number;
bool use_external_triggers;
u16 vref;
};

extern void __init at91_add_device_adc(struct at91_adc_data *data);
#endif

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