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Diffstat (limited to 'drivers/mxc/pmic/mc13783/pmic_adc_defs.h')
| -rw-r--r-- | drivers/mxc/pmic/mc13783/pmic_adc_defs.h | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/drivers/mxc/pmic/mc13783/pmic_adc_defs.h b/drivers/mxc/pmic/mc13783/pmic_adc_defs.h new file mode 100644 index 000000000000..fbde842bad94 --- /dev/null +++ b/drivers/mxc/pmic/mc13783/pmic_adc_defs.h @@ -0,0 +1,321 @@ +/* + * Copyright 2004-2010 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 1000 +#define TS_Y_MAX 1000 + +#define TS_X_MIN 80 +#define TS_Y_MIN 80 + +#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__ */ |