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/*
* Freescale STMP37XX/STMP378X LRADC helper interface
*
* Embedded Alley Solutions, Inc <source@embeddedalley.com>
*
* Copyright 2008-2010 Freescale Semiconductor, Inc.
* Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#ifndef __ASM_PLAT_LRADC_H
#define __ASM_PLAT_LRADC_H
int hw_lradc_use_channel(int);
int hw_lradc_unuse_channel(int);
extern u32 hw_lradc_vddio(void);
void hw_lradc_set_delay_trigger_kick(int trigger, int value);
void hw_lradc_configure_channel(int channel, int enable_div2,
int enable_acc, int samples);
int hw_lradc_present(int channel);
int hw_lradc_init_ladder(int channel, int trigger, unsigned sampling);
int hw_lradc_stop_ladder(int channel, int trigger);
void hw_lradc_set_delay_trigger(int trigger, u32 trigger_lradc,
u32 delay_triggers, u32 loops, u32 delays);
void hw_lradc_clear_delay_trigger(int trigger, u32 trigger_lradc,
u32 delay_triggers);
#define LRADC_CH0 0
#define LRADC_CH1 1
#define LRADC_CH2 2
#define LRADC_CH3 3
#define LRADC_CH4 4
#define LRADC_CH5 5
#define LRADC_CH6 6
#define LRADC_CH7 7
#define LRADC_TOUCH_X_PLUS LRADC_CH2
#define LRADC_TOUCH_Y_PLUS LRADC_CH3
#define LRADC_TOUCH_X_MINUS LRADC_CH4
#define LRADC_TOUCH_Y_MINUS LRADC_CH5
#define VDDIO_VOLTAGE_CH LRADC_CH6
#define BATTERY_VOLTAGE_CH LRADC_CH7
#define LRADC_CLOCK_6MHZ 0
#define LRADC_CLOCK_4MHZ 1
#define LRADC_CLOCK_3MHZ 2
#define LRADC_CLOCK_2MHZ 3
#define LRADC_DELAY_TRIGGER_BUTTON 0
#define LRADC_DELAY_TRIGGER_BATTERY 1
#define LRADC_DELAY_TRIGGER_TOUCHSCREEN 2
#define LRADC_DELAY_TRIGGER_DIE 3
#endif /* __ASM_PLAT_LRADC_H */
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