Edit File: at91_adc.h
/* * 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