include/linux/mfd/abx500.h

   1 /*
   2  * Copyright (C) 2007-2009 ST-Ericsson AB
   3  * License terms: GNU General Public License (GPL) version 2
   4  * AB3100 core access functions
   5  * Author: Linus Walleij <linus.walleij@stericsson.com>
   6  *
   7  * ABX500 core access functions.
   8  * The abx500 interface is used for the Analog Baseband chip
   9  * ab3100, ab5500, and ab8500.
  10  *
  11  * Author: Mattias Wallin <mattias.wallin@stericsson.com>
  12  * Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
  13  * Author: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
  14  * Author: Rickard Andersson <rickard.andersson@stericsson.com>
  15  */
  16
  17 #include <linux/regulator/machine.h>
  18
  19 struct device;
  20
  21 #ifndef MFD_ABX500_H
  22 #define MFD_ABX500_H
  23
  24 #define AB3100_P1A      0xc0
  25 #define AB3100_P1B      0xc1
  26 #define AB3100_P1C      0xc2
  27 #define AB3100_P1D      0xc3
  28 #define AB3100_P1E      0xc4
  29 #define AB3100_P1F      0xc5
  30 #define AB3100_P1G      0xc6
  31 #define AB3100_R2A      0xc7
  32 #define AB3100_R2B      0xc8
  33 #define AB5500_1_0      0x20
  34 #define AB5500_1_1      0x21
  35 #define AB5500_2_0      0x24
  36
  37 /*
  38  * AB3100, EVENTA1, A2 and A3 event register flags
  39  * these are catenated into a single 32-bit flag in the code
  40  * for event notification broadcasts.
  41  */
  42 #define AB3100_EVENTA1_ONSWA                            (0x01<<16)
  43 #define AB3100_EVENTA1_ONSWB                            (0x02<<16)
  44 #define AB3100_EVENTA1_ONSWC                            (0x04<<16)
  45 #define AB3100_EVENTA1_DCIO                             (0x08<<16)
  46 #define AB3100_EVENTA1_OVER_TEMP                        (0x10<<16)
  47 #define AB3100_EVENTA1_SIM_OFF                          (0x20<<16)
  48 #define AB3100_EVENTA1_VBUS                             (0x40<<16)
  49 #define AB3100_EVENTA1_VSET_USB                         (0x80<<16)
  50
  51 #define AB3100_EVENTA2_READY_TX                         (0x01<<8)
  52 #define AB3100_EVENTA2_READY_RX                         (0x02<<8)
  53 #define AB3100_EVENTA2_OVERRUN_ERROR                    (0x04<<8)
  54 #define AB3100_EVENTA2_FRAMING_ERROR                    (0x08<<8)
  55 #define AB3100_EVENTA2_CHARG_OVERCURRENT                (0x10<<8)
  56 #define AB3100_EVENTA2_MIDR                             (0x20<<8)
  57 #define AB3100_EVENTA2_BATTERY_REM                      (0x40<<8)
  58 #define AB3100_EVENTA2_ALARM                            (0x80<<8)
  59
  60 #define AB3100_EVENTA3_ADC_TRIG5                        (0x01)
  61 #define AB3100_EVENTA3_ADC_TRIG4                        (0x02)
  62 #define AB3100_EVENTA3_ADC_TRIG3                        (0x04)
  63 #define AB3100_EVENTA3_ADC_TRIG2                        (0x08)
  64 #define AB3100_EVENTA3_ADC_TRIGVBAT                     (0x10)
  65 #define AB3100_EVENTA3_ADC_TRIGVTX                      (0x20)
  66 #define AB3100_EVENTA3_ADC_TRIG1                        (0x40)
  67 #define AB3100_EVENTA3_ADC_TRIG0                        (0x80)
  68
  69 /* AB3100, STR register flags */
  70 #define AB3100_STR_ONSWA                                (0x01)
  71 #define AB3100_STR_ONSWB                                (0x02)
  72 #define AB3100_STR_ONSWC                                (0x04)
  73 #define AB3100_STR_DCIO                                 (0x08)
  74 #define AB3100_STR_BOOT_MODE                            (0x10)
  75 #define AB3100_STR_SIM_OFF                              (0x20)
  76 #define AB3100_STR_BATT_REMOVAL                         (0x40)
  77 #define AB3100_STR_VBUS                                 (0x80)
  78
  79 /*
  80  * AB3100 contains 8 regulators, one external regulator controller
  81  * and a buck converter, further the LDO E and buck converter can
  82  * have separate settings if they are in sleep mode, this is
  83  * modeled as a separate regulator.
  84  */
  85 #define AB3100_NUM_REGULATORS                           10
  86
  87 /**
  88  * struct ab3100
  89  * @access_mutex: lock out concurrent accesses to the AB3100 registers
  90  * @dev: pointer to the containing device
  91  * @i2c_client: I2C client for this chip
  92  * @testreg_client: secondary client for test registers
  93  * @chip_name: name of this chip variant
  94  * @chip_id: 8 bit chip ID for this chip variant
  95  * @event_subscribers: event subscribers are listed here
  96  * @startup_events: a copy of the first reading of the event registers
  97  * @startup_events_read: whether the first events have been read
  98  *
  99  * This struct is PRIVATE and devices using it should NOT
 100  * access ANY fields. It is used as a token for calling the
 101  * AB3100 functions.
 102  */
 103 struct ab3100 {
 104         struct mutex access_mutex;
 105         struct device *dev;
 106         struct i2c_client *i2c_client;
 107         struct i2c_client *testreg_client;
 108         char chip_name[32];
 109         u8 chip_id;
 110         struct blocking_notifier_head event_subscribers;
 111         u8 startup_events[3];
 112         bool startup_events_read;
 113 };
 114
 115 /**
 116  * struct ab3100_platform_data
 117  * Data supplied to initialize board connections to the AB3100
 118  * @reg_constraints: regulator constraints for target board
 119  *     the order of these constraints are: LDO A, C, D, E,
 120  *     F, G, H, K, EXT and BUCK.
 121  * @reg_initvals: initial values for the regulator registers
 122  *     plus two sleep settings for LDO E and the BUCK converter.
 123  *     exactly AB3100_NUM_REGULATORS+2 values must be sent in.
 124  *     Order: LDO A, C, E, E sleep, F, G, H, K, EXT, BUCK,
 125  *     BUCK sleep, LDO D. (LDO D need to be initialized last.)
 126  * @external_voltage: voltage level of the external regulator.
 127  */
 128 struct ab3100_platform_data {
 129         struct regulator_init_data reg_constraints[AB3100_NUM_REGULATORS];
 130         u8 reg_initvals[AB3100_NUM_REGULATORS+2];
 131         int external_voltage;
 132 };
 133
 134 int ab3100_event_register(struct ab3100 *ab3100,
 135                           struct notifier_block *nb);
 136 int ab3100_event_unregister(struct ab3100 *ab3100,
 137                             struct notifier_block *nb);
 138
 139 /**
 140  * struct abx500_init_setting
 141  * Initial value of the registers for driver to use during setup.
 142  */
 143 struct abx500_init_settings {
 144         u8 bank;
 145         u8 reg;
 146         u8 setting;
 147 };
 148
 149 int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg,
 150         u8 value);
 151 int abx500_get_register_interruptible(struct device *dev, u8 bank, u8 reg,
 152         u8 *value);
 153 int abx500_get_register_page_interruptible(struct device *dev, u8 bank,
 154         u8 first_reg, u8 *regvals, u8 numregs);
 155 int abx500_set_register_page_interruptible(struct device *dev, u8 bank,
 156         u8 first_reg, u8 *regvals, u8 numregs);
 157 /**
 158  * abx500_mask_and_set_register_inerruptible() - Modifies selected bits of a
 159  *      target register
 160  *
 161  * @dev: The AB sub device.
 162  * @bank: The i2c bank number.
 163  * @bitmask: The bit mask to use.
 164  * @bitvalues: The new bit values.
 165  *
 166  * Updates the value of an AB register:
 167  * value -> ((value & ~bitmask) | (bitvalues & bitmask))
 168  */
 169 int abx500_mask_and_set_register_interruptible(struct device *dev, u8 bank,
 170         u8 reg, u8 bitmask, u8 bitvalues);
 171 int abx500_get_chip_id(struct device *dev);
 172 int abx500_event_registers_startup_state_get(struct device *dev, u8 *event);
 173 int abx500_startup_irq_enabled(struct device *dev, unsigned int irq);
 174
 175 struct abx500_ops {
 176         int (*get_chip_id) (struct device *);
 177         int (*get_register) (struct device *, u8, u8, u8 *);
 178         int (*set_register) (struct device *, u8, u8, u8);
 179         int (*get_register_page) (struct device *, u8, u8, u8 *, u8);
 180         int (*set_register_page) (struct device *, u8, u8, u8 *, u8);
 181         int (*mask_and_set_register) (struct device *, u8, u8, u8, u8);
 182         int (*event_registers_startup_state_get) (struct device *, u8 *);
 183         int (*startup_irq_enabled) (struct device *, unsigned int);
 184 };
 185
 186 int abx500_register_ops(struct device *core_dev, struct abx500_ops *ops);
 187 void abx500_remove_ops(struct device *dev);
 188 #endif