diff options
Diffstat (limited to 'include/linux/platform_data/at91_adc.h')
| -rw-r--r-- | include/linux/platform_data/at91_adc.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/linux/platform_data/at91_adc.h b/include/linux/platform_data/at91_adc.h new file mode 100644 index 000000000..7819fc787 --- /dev/null +++ b/include/linux/platform_data/at91_adc.h @@ -0,0 +1,50 @@ +/* + * 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 |