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/*
* Copyright 2004-2008 Freescale Semiconductor, 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
*/
/*!
* @file mc13783/pmic_adc_defs.h
* @brief This header contains all defines for PMIC(mc13783) ADC driver.
*
* @ingroup PMIC_ADC
*/
#ifndef __MC13783_ADC__DEFS_H__
#define __MC13783_ADC__DEFS_H__
#define MC13783_ADC_DEVICE "/dev/mc13783_adc"
#define DEF_ADC_0 0x008000
#define DEF_ADC_3 0x000080
#define ADC_NB_AVAILABLE 2
#define MAX_CHANNEL 7
/*
* Maximun allowed variation in the three X/Y co-ordinates acquired from
* touch-screen
*/
#define DELTA_Y_MAX 50
#define DELTA_X_MAX 50
/* Upon clearing the filter, this is the delay in restarting the filter */
#define FILTER_MIN_DELAY 4
/* Length of X and Y Touch screen filters */
#define FILTLEN 3
#define TS_X_MAX 1024
#define TS_Y_MAX 1024
#define TS_X_MIN 2
#define TS_Y_MIN 2
#define MC13783_ADC0_TS_M_LSH 14
#define MC13783_ADC0_TS_M_WID 3
/*
* ADC 0
*/
#define ADC_WAIT_TSI_0 0x001C00
/*
* ADC 1
*/
#define ADC_EN 0x000001
#define ADC_SGL_CH 0x000002
#define ADC_ADSEL 0x000008
#define ADC_CH_0_POS 5
#define ADC_CH_0_MASK 0x0000E0
#define ADC_CH_1_POS 8
#define ADC_CH_1_MASK 0x000700
#define ADC_DELAY_POS 11
#define ADC_DELAY_MASK 0x07F800
#define ADC_ATO 0x080000
#define ASC_ADC 0x100000
#define ADC_WAIT_TSI_1 0x300001
#define ADC_CHRGRAW_D5 0x008000
/*
* ADC 2 - 4
*/
#define ADD1_RESULT_MASK 0x00000FFC
#define ADD2_RESULT_MASK 0x00FFC000
#define ADC_TS_MASK 0x00FFCFFC
/*
* ADC 3
*/
#define ADC_INC 0x030000
#define ADC_BIS 0x800000
/*
* ADC 3
*/
#define ADC_NO_ADTRIG 0x200000
#define ADC_WCOMP 0x040000
#define ADC_WCOMP_H_POS 0
#define ADC_WCOMP_L_POS 9
#define ADC_WCOMP_H_MASK 0x00003F
#define ADC_WCOMP_L_MASK 0x007E00
#define ADC_MODE_MASK 0x00003F
/*
* Interrupt Status 0
*/
#define ADC_INT_BISDONEI 0x02
/*!
* Define state mode of ADC.
*/
typedef enum adc_state {
/*!
* Free.
*/
ADC_FREE,
/*!
* Used.
*/
ADC_USED,
/*!
* Monitoring
*/
ADC_MONITORING,
} t_adc_state;
/*!
* This enumeration, is used to configure the mode of ADC.
*/
typedef enum reading_mode {
/*!
* Enables lithium cell reading
*/
M_LITHIUM_CELL = 0x000001,
/*!
* Enables charge current reading
*/
M_CHARGE_CURRENT = 0x000002,
/*!
* Enables battery current reading
*/
M_BATTERY_CURRENT = 0x000004,
/*!
* Enables thermistor reading
*/
M_THERMISTOR = 0x000008,
/*!
* Enables die temperature reading
*/
M_DIE_TEMPERATURE = 0x000010,
/*!
* Enables UID reading
*/
M_UID = 0x000020,
} t_reading_mode;
/*!
* This enumeration, is used to configure the monitoring mode.
*/
typedef enum check_mode {
/*!
* Comparator low level
*/
CHECK_LOW,
/*!
* Comparator high level
*/
CHECK_HIGH,
/*!
* Comparator low or high level
*/
CHECK_LOW_OR_HIGH,
} t_check_mode;
/*!
* This structure is used to configure and report adc value.
*/
typedef struct {
/*!
* Delay before first conversion
*/
unsigned int delay;
/*!
* sets the ATX bit for delay on all conversion
*/
bool conv_delay;
/*!
* Sets the single channel mode
*/
bool single_channel;
/*!
* Selects the set of inputs
*/
bool group;
/*!
* Channel selection 1
*/
t_channel channel_0;
/*!
* Channel selection 2
*/
t_channel channel_1;
/*!
* Used to configure ADC mode with t_reading_mode
*/
t_reading_mode read_mode;
/*!
* Sets the Touch screen mode
*/
bool read_ts;
/*!
* Wait TSI event before touch screen reading
*/
bool wait_tsi;
/*!
* Sets CHRGRAW scaling to divide by 5
* Only supported on 2.0 and higher
*/
bool chrgraw_devide_5;
/*!
* Return ADC values
*/
unsigned int value[8];
/*!
* Return touch screen values
*/
t_touch_screen ts_value;
} t_adc_param;
/*!
* This structure is used to configure the monitoring mode of ADC.
*/
typedef struct {
/*!
* Delay before first conversion
*/
unsigned int delay;
/*!
* sets the ATX bit for delay on all conversion
*/
bool conv_delay;
/*!
* Channel selection 1
*/
t_channel channel;
/*!
* Selects the set of inputs
*/
bool group;
/*!
* Used to configure ADC mode with t_reading_mode
*/
unsigned int read_mode;
/*!
* Comparator low level in WCOMP mode
*/
unsigned int comp_low;
/*!
* Comparator high level in WCOMP mode
*/
unsigned int comp_high;
/*!
* Sets type of monitoring (low, high or both)
*/
t_check_mode check_mode;
/*!
* Callback to be launched when event is detected
*/
void (*callback) (void);
} t_monitoring_param;
/*!
* This function performs filtering and rejection of excessive noise prone
* samples.
*
* @param ts_curr Touch screen value
*
* @return This function returns 0 on success, -1 otherwise.
*/
static int pmic_adc_filter(t_touch_screen * ts_curr);
/*!
* This function request a ADC.
*
* @return This function returns index of ADC to be used (0 or 1) if successful.
return -1 if error.
*/
int mc13783_adc_request(bool read_ts);
/*!
* This function is used to update buffer of touch screen value in read mode.
*/
void update_buffer(void);
/*!
* This function release an ADC.
*
* @param adc_index index of ADC to be released.
*
* @return This function returns 0 if successful.
*/
int mc13783_adc_release(int adc_index);
/*!
* This function select the required read_mode for a specific channel.
*
* @param channel The channel to be sampled
*
* @return This function returns the requires read_mode
*/
t_reading_mode mc13783_set_read_mode(t_channel channel);
/*!
* This function read the touch screen value.
*
* @param touch_sample return value of touch screen
* @param wait_tsi if true, this function is synchronous (wait in TSI event).
*
* @return This function returns 0.
*/
PMIC_STATUS mc13783_adc_read_ts(t_touch_screen * touch_sample, int wait_tsi);
#endif /* __MC13783_ADC__DEFS_H__ */
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