projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| aaeb6dff MR |
1 | /* |
| 2 | * Copyright (C) 2011 Free Electrons | |
| 3 | * | |
| 4 | * Licensed under the GPLv2 or later. | |
| 5 | */ | |
| 6 | ||
| 7 | #ifndef _AT91_ADC_H_ | |
| 8 | #define _AT91_ADC_H_ | |
| 9 | ||
| 10 | /** | |
| 11 | * struct at91_adc_reg_desc - Various informations relative to registers | |
| 12 | * @channel_base: Base offset for the channel data registers | |
| 13 | * @drdy_mask: Mask of the DRDY field in the relevant registers | |
| 14 | (Interruptions registers mostly) | |
| 15 | * @status_register: Offset of the Interrupt Status Register | |
| 16 | * @trigger_register: Offset of the Trigger setup register | |
| 17 | */ | |
| 18 | struct at91_adc_reg_desc { | |
| 19 | u8 channel_base; | |
| 20 | u32 drdy_mask; | |
| 21 | u8 status_register; | |
| 22 | u8 trigger_register; | |
| 23 | }; | |
| 24 | ||
| 25 | /** | |
| 26 | * struct at91_adc_trigger - description of triggers | |
| 27 | * @name: name of the trigger advertised to the user | |
| 28 | * @value: value to set in the ADC's trigger setup register | |
| 29 | to enable the trigger | |
| 30 | * @is_external: Does the trigger rely on an external pin? | |
| 31 | */ | |
| 32 | struct at91_adc_trigger { | |
| 33 | const char *name; | |
| 34 | u8 value; | |
| 35 | bool is_external; | |
| 36 | }; | |
| 37 | ||
| 38 | /** | |
| 39 | * struct at91_adc_data - platform data for ADC driver | |
| 40 | * @channels_used: channels in use on the board as a bitmask | |
| 41 | * @num_channels: global number of channels available on the board | |
| 42 | * @registers: Registers definition on the board | |
| 43 | * @startup_time: startup time of the ADC in microseconds | |
| 44 | * @trigger_list: Triggers available in the ADC | |
| 45 | * @trigger_number: Number of triggers available in the ADC | |
| 46 | * @use_external_triggers: does the board has external triggers availables | |
| 47 | * @vref: Reference voltage for the ADC in millivolts | |
| 48 | */ | |
| 49 | struct at91_adc_data { | |
| 50 | unsigned long channels_used; | |
| 51 | u8 num_channels; | |
| 52 | struct at91_adc_reg_desc *registers; | |
| 53 | u8 startup_time; | |
| 54 | struct at91_adc_trigger *trigger_list; | |
| 55 | u8 trigger_number; | |
| 56 | bool use_external_triggers; | |
| 57 | u16 vref; | |
| 58 | }; | |
| 59 | ||
| 60 | extern void __init at91_add_device_adc(struct at91_adc_data *data); | |
| 61 | #endif |