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   1 /*
   2  * include/linux/mfd/wm831x/core.h -- Core interface for WM831x
   3  *
   4  * Copyright 2009 Wolfson Microelectronics PLC.
   5  *
   6  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  *
  13  */
  14
  15 #ifndef __MFD_WM831X_CORE_H__
  16 #define __MFD_WM831X_CORE_H__
  17
  18 #include <linux/interrupt.h>
  19 #include <linux/workqueue.h>
  20
  21 /*
  22  * Register values.
  23  */
  24 #define WM831X_RESET_ID                         0x00
  25 #define WM831X_REVISION                         0x01
  26 #define WM831X_PARENT_ID                        0x4000
  27 #define WM831X_SYSVDD_CONTROL                   0x4001
  28 #define WM831X_THERMAL_MONITORING               0x4002
  29 #define WM831X_POWER_STATE                      0x4003
  30 #define WM831X_WATCHDOG                         0x4004
  31 #define WM831X_ON_PIN_CONTROL                   0x4005
  32 #define WM831X_RESET_CONTROL                    0x4006
  33 #define WM831X_CONTROL_INTERFACE                0x4007
  34 #define WM831X_SECURITY_KEY                     0x4008
  35 #define WM831X_SOFTWARE_SCRATCH                 0x4009
  36 #define WM831X_OTP_CONTROL                      0x400A
  37 #define WM831X_GPIO_LEVEL                       0x400C
  38 #define WM831X_SYSTEM_STATUS                    0x400D
  39 #define WM831X_ON_SOURCE                        0x400E
  40 #define WM831X_OFF_SOURCE                       0x400F
  41 #define WM831X_SYSTEM_INTERRUPTS                0x4010
  42 #define WM831X_INTERRUPT_STATUS_1               0x4011
  43 #define WM831X_INTERRUPT_STATUS_2               0x4012
  44 #define WM831X_INTERRUPT_STATUS_3               0x4013
  45 #define WM831X_INTERRUPT_STATUS_4               0x4014
  46 #define WM831X_INTERRUPT_STATUS_5               0x4015
  47 #define WM831X_IRQ_CONFIG                       0x4017
  48 #define WM831X_SYSTEM_INTERRUPTS_MASK           0x4018
  49 #define WM831X_INTERRUPT_STATUS_1_MASK          0x4019
  50 #define WM831X_INTERRUPT_STATUS_2_MASK          0x401A
  51 #define WM831X_INTERRUPT_STATUS_3_MASK          0x401B
  52 #define WM831X_INTERRUPT_STATUS_4_MASK          0x401C
  53 #define WM831X_INTERRUPT_STATUS_5_MASK          0x401D
  54 #define WM831X_RTC_WRITE_COUNTER                0x4020
  55 #define WM831X_RTC_TIME_1                       0x4021
  56 #define WM831X_RTC_TIME_2                       0x4022
  57 #define WM831X_RTC_ALARM_1                      0x4023
  58 #define WM831X_RTC_ALARM_2                      0x4024
  59 #define WM831X_RTC_CONTROL                      0x4025
  60 #define WM831X_RTC_TRIM                         0x4026
  61 #define WM831X_TOUCH_CONTROL_1                  0x4028
  62 #define WM831X_TOUCH_CONTROL_2                  0x4029
  63 #define WM831X_TOUCH_DATA_X                     0x402A
  64 #define WM831X_TOUCH_DATA_Y                     0x402B
  65 #define WM831X_TOUCH_DATA_Z                     0x402C
  66 #define WM831X_AUXADC_DATA                      0x402D
  67 #define WM831X_AUXADC_CONTROL                   0x402E
  68 #define WM831X_AUXADC_SOURCE                    0x402F
  69 #define WM831X_COMPARATOR_CONTROL               0x4030
  70 #define WM831X_COMPARATOR_1                     0x4031
  71 #define WM831X_COMPARATOR_2                     0x4032
  72 #define WM831X_COMPARATOR_3                     0x4033
  73 #define WM831X_COMPARATOR_4                     0x4034
  74 #define WM831X_GPIO1_CONTROL                    0x4038
  75 #define WM831X_GPIO2_CONTROL                    0x4039
  76 #define WM831X_GPIO3_CONTROL                    0x403A
  77 #define WM831X_GPIO4_CONTROL                    0x403B
  78 #define WM831X_GPIO5_CONTROL                    0x403C
  79 #define WM831X_GPIO6_CONTROL                    0x403D
  80 #define WM831X_GPIO7_CONTROL                    0x403E
  81 #define WM831X_GPIO8_CONTROL                    0x403F
  82 #define WM831X_GPIO9_CONTROL                    0x4040
  83 #define WM831X_GPIO10_CONTROL                   0x4041
  84 #define WM831X_GPIO11_CONTROL                   0x4042
  85 #define WM831X_GPIO12_CONTROL                   0x4043
  86 #define WM831X_GPIO13_CONTROL                   0x4044
  87 #define WM831X_GPIO14_CONTROL                   0x4045
  88 #define WM831X_GPIO15_CONTROL                   0x4046
  89 #define WM831X_GPIO16_CONTROL                   0x4047
  90 #define WM831X_CHARGER_CONTROL_1                0x4048
  91 #define WM831X_CHARGER_CONTROL_2                0x4049
  92 #define WM831X_CHARGER_STATUS                   0x404A
  93 #define WM831X_BACKUP_CHARGER_CONTROL           0x404B
  94 #define WM831X_STATUS_LED_1                     0x404C
  95 #define WM831X_STATUS_LED_2                     0x404D
  96 #define WM831X_CURRENT_SINK_1                   0x404E
  97 #define WM831X_CURRENT_SINK_2                   0x404F
  98 #define WM831X_DCDC_ENABLE                      0x4050
  99 #define WM831X_LDO_ENABLE                       0x4051
 100 #define WM831X_DCDC_STATUS                      0x4052
 101 #define WM831X_LDO_STATUS                       0x4053
 102 #define WM831X_DCDC_UV_STATUS                   0x4054
 103 #define WM831X_LDO_UV_STATUS                    0x4055
 104 #define WM831X_DC1_CONTROL_1                    0x4056
 105 #define WM831X_DC1_CONTROL_2                    0x4057
 106 #define WM831X_DC1_ON_CONFIG                    0x4058
 107 #define WM831X_DC1_SLEEP_CONTROL                0x4059
 108 #define WM831X_DC1_DVS_CONTROL                  0x405A
 109 #define WM831X_DC2_CONTROL_1                    0x405B
 110 #define WM831X_DC2_CONTROL_2                    0x405C
 111 #define WM831X_DC2_ON_CONFIG                    0x405D
 112 #define WM831X_DC2_SLEEP_CONTROL                0x405E
 113 #define WM831X_DC2_DVS_CONTROL                  0x405F
 114 #define WM831X_DC3_CONTROL_1                    0x4060
 115 #define WM831X_DC3_CONTROL_2                    0x4061
 116 #define WM831X_DC3_ON_CONFIG                    0x4062
 117 #define WM831X_DC3_SLEEP_CONTROL                0x4063
 118 #define WM831X_DC4_CONTROL                      0x4064
 119 #define WM831X_DC4_SLEEP_CONTROL                0x4065
 120 #define WM831X_EPE1_CONTROL                     0x4066
 121 #define WM831X_EPE2_CONTROL                     0x4067
 122 #define WM831X_LDO1_CONTROL                     0x4068
 123 #define WM831X_LDO1_ON_CONTROL                  0x4069
 124 #define WM831X_LDO1_SLEEP_CONTROL               0x406A
 125 #define WM831X_LDO2_CONTROL                     0x406B
 126 #define WM831X_LDO2_ON_CONTROL                  0x406C
 127 #define WM831X_LDO2_SLEEP_CONTROL               0x406D
 128 #define WM831X_LDO3_CONTROL                     0x406E
 129 #define WM831X_LDO3_ON_CONTROL                  0x406F
 130 #define WM831X_LDO3_SLEEP_CONTROL               0x4070
 131 #define WM831X_LDO4_CONTROL                     0x4071
 132 #define WM831X_LDO4_ON_CONTROL                  0x4072
 133 #define WM831X_LDO4_SLEEP_CONTROL               0x4073
 134 #define WM831X_LDO5_CONTROL                     0x4074
 135 #define WM831X_LDO5_ON_CONTROL                  0x4075
 136 #define WM831X_LDO5_SLEEP_CONTROL               0x4076
 137 #define WM831X_LDO6_CONTROL                     0x4077
 138 #define WM831X_LDO6_ON_CONTROL                  0x4078
 139 #define WM831X_LDO6_SLEEP_CONTROL               0x4079
 140 #define WM831X_LDO7_CONTROL                     0x407A
 141 #define WM831X_LDO7_ON_CONTROL                  0x407B
 142 #define WM831X_LDO7_SLEEP_CONTROL               0x407C
 143 #define WM831X_LDO8_CONTROL                     0x407D
 144 #define WM831X_LDO8_ON_CONTROL                  0x407E
 145 #define WM831X_LDO8_SLEEP_CONTROL               0x407F
 146 #define WM831X_LDO9_CONTROL                     0x4080
 147 #define WM831X_LDO9_ON_CONTROL                  0x4081
 148 #define WM831X_LDO9_SLEEP_CONTROL               0x4082
 149 #define WM831X_LDO10_CONTROL                    0x4083
 150 #define WM831X_LDO10_ON_CONTROL                 0x4084
 151 #define WM831X_LDO10_SLEEP_CONTROL              0x4085
 152 #define WM831X_LDO11_ON_CONTROL                 0x4087
 153 #define WM831X_LDO11_SLEEP_CONTROL              0x4088
 154 #define WM831X_POWER_GOOD_SOURCE_1              0x408E
 155 #define WM831X_POWER_GOOD_SOURCE_2              0x408F
 156 #define WM831X_CLOCK_CONTROL_1                  0x4090
 157 #define WM831X_CLOCK_CONTROL_2                  0x4091
 158 #define WM831X_FLL_CONTROL_1                    0x4092
 159 #define WM831X_FLL_CONTROL_2                    0x4093
 160 #define WM831X_FLL_CONTROL_3                    0x4094
 161 #define WM831X_FLL_CONTROL_4                    0x4095
 162 #define WM831X_FLL_CONTROL_5                    0x4096
 163 #define WM831X_UNIQUE_ID_1                      0x7800
 164 #define WM831X_UNIQUE_ID_2                      0x7801
 165 #define WM831X_UNIQUE_ID_3                      0x7802
 166 #define WM831X_UNIQUE_ID_4                      0x7803
 167 #define WM831X_UNIQUE_ID_5                      0x7804
 168 #define WM831X_UNIQUE_ID_6                      0x7805
 169 #define WM831X_UNIQUE_ID_7                      0x7806
 170 #define WM831X_UNIQUE_ID_8                      0x7807
 171 #define WM831X_FACTORY_OTP_ID                   0x7808
 172 #define WM831X_FACTORY_OTP_1                    0x7809
 173 #define WM831X_FACTORY_OTP_2                    0x780A
 174 #define WM831X_FACTORY_OTP_3                    0x780B
 175 #define WM831X_FACTORY_OTP_4                    0x780C
 176 #define WM831X_FACTORY_OTP_5                    0x780D
 177 #define WM831X_CUSTOMER_OTP_ID                  0x7810
 178 #define WM831X_DC1_OTP_CONTROL                  0x7811
 179 #define WM831X_DC2_OTP_CONTROL                  0x7812
 180 #define WM831X_DC3_OTP_CONTROL                  0x7813
 181 #define WM831X_LDO1_2_OTP_CONTROL               0x7814
 182 #define WM831X_LDO3_4_OTP_CONTROL               0x7815
 183 #define WM831X_LDO5_6_OTP_CONTROL               0x7816
 184 #define WM831X_LDO7_8_OTP_CONTROL               0x7817
 185 #define WM831X_LDO9_10_OTP_CONTROL              0x7818
 186 #define WM831X_LDO11_EPE_CONTROL                0x7819
 187 #define WM831X_GPIO1_OTP_CONTROL                0x781A
 188 #define WM831X_GPIO2_OTP_CONTROL                0x781B
 189 #define WM831X_GPIO3_OTP_CONTROL                0x781C
 190 #define WM831X_GPIO4_OTP_CONTROL                0x781D
 191 #define WM831X_GPIO5_OTP_CONTROL                0x781E
 192 #define WM831X_GPIO6_OTP_CONTROL                0x781F
 193 #define WM831X_DBE_CHECK_DATA                   0x7827
 194
 195 /*
 196  * R0 (0x00) - Reset ID
 197  */
 198 #define WM831X_CHIP_ID_MASK                     0xFFFF  /* CHIP_ID - [15:0] */
 199 #define WM831X_CHIP_ID_SHIFT                         0  /* CHIP_ID - [15:0] */
 200 #define WM831X_CHIP_ID_WIDTH                        16  /* CHIP_ID - [15:0] */
 201
 202 /*
 203  * R1 (0x01) - Revision
 204  */
 205 #define WM831X_PARENT_REV_MASK                  0xFF00  /* PARENT_REV - [15:8] */
 206 #define WM831X_PARENT_REV_SHIFT                      8  /* PARENT_REV - [15:8] */
 207 #define WM831X_PARENT_REV_WIDTH                      8  /* PARENT_REV - [15:8] */
 208 #define WM831X_CHILD_REV_MASK                   0x00FF  /* CHILD_REV - [7:0] */
 209 #define WM831X_CHILD_REV_SHIFT                       0  /* CHILD_REV - [7:0] */
 210 #define WM831X_CHILD_REV_WIDTH                       8  /* CHILD_REV - [7:0] */
 211
 212 /*
 213  * R16384 (0x4000) - Parent ID
 214  */
 215 #define WM831X_PARENT_ID_MASK                   0xFFFF  /* PARENT_ID - [15:0] */
 216 #define WM831X_PARENT_ID_SHIFT                       0  /* PARENT_ID - [15:0] */
 217 #define WM831X_PARENT_ID_WIDTH                      16  /* PARENT_ID - [15:0] */
 218
 219 /*
 220  * R16389 (0x4005) - ON Pin Control
 221  */
 222 #define WM831X_ON_PIN_SECACT_MASK               0x0300  /* ON_PIN_SECACT - [9:8] */
 223 #define WM831X_ON_PIN_SECACT_SHIFT                   8  /* ON_PIN_SECACT - [9:8] */
 224 #define WM831X_ON_PIN_SECACT_WIDTH                   2  /* ON_PIN_SECACT - [9:8] */
 225 #define WM831X_ON_PIN_PRIMACT_MASK              0x0030  /* ON_PIN_PRIMACT - [5:4] */
 226 #define WM831X_ON_PIN_PRIMACT_SHIFT                  4  /* ON_PIN_PRIMACT - [5:4] */
 227 #define WM831X_ON_PIN_PRIMACT_WIDTH                  2  /* ON_PIN_PRIMACT - [5:4] */
 228 #define WM831X_ON_PIN_STS                       0x0008  /* ON_PIN_STS */
 229 #define WM831X_ON_PIN_STS_MASK                  0x0008  /* ON_PIN_STS */
 230 #define WM831X_ON_PIN_STS_SHIFT                      3  /* ON_PIN_STS */
 231 #define WM831X_ON_PIN_STS_WIDTH                      1  /* ON_PIN_STS */
 232 #define WM831X_ON_PIN_TO_MASK                   0x0003  /* ON_PIN_TO - [1:0] */
 233 #define WM831X_ON_PIN_TO_SHIFT                       0  /* ON_PIN_TO - [1:0] */
 234 #define WM831X_ON_PIN_TO_WIDTH                       2  /* ON_PIN_TO - [1:0] */
 235
 236 struct regulator_dev;
 237
 238 struct wm831x {
 239         struct mutex io_lock;
 240
 241         struct device *dev;
 242         int (*read_dev)(struct wm831x *wm831x, unsigned short reg,
 243                         int bytes, void *dest);
 244         int (*write_dev)(struct wm831x *wm831x, unsigned short reg,
 245                          int bytes, void *src);
 246
 247         void *control_data;
 248
 249         int irq;  /* Our chip IRQ */
 250         struct mutex irq_lock;
 251         struct workqueue_struct *irq_wq;
 252         struct work_struct irq_work;
 253         unsigned int irq_base;
 254         int irq_masks[5];
 255
 256         int num_gpio;
 257
 258         struct mutex auxadc_lock;
 259
 260         /* The WM831x has a security key blocking access to certain
 261          * registers.  The mutex is taken by the accessors for locking
 262          * and unlocking the security key, locked is used to fail
 263          * writes if the lock is held.
 264          */
 265         struct mutex key_lock;
 266         unsigned int locked:1;
 267 };
 268
 269 /* Device I/O API */
 270 int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg);
 271 int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg,
 272                  unsigned short val);
 273 void wm831x_reg_lock(struct wm831x *wm831x);
 274 int wm831x_reg_unlock(struct wm831x *wm831x);
 275 int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
 276                     unsigned short mask, unsigned short val);
 277 int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg,
 278                      int count, u16 *buf);
 279
 280 int wm831x_irq_init(struct wm831x *wm831x, int irq);
 281 void wm831x_irq_exit(struct wm831x *wm831x);
 282
 283 int __must_check wm831x_request_irq(struct wm831x *wm831x,
 284                                     unsigned int irq, irq_handler_t handler,
 285                                     unsigned long flags, const char *name,
 286                                     void *dev);
 287 void wm831x_free_irq(struct wm831x *wm831x, unsigned int, void *);
 288 void wm831x_disable_irq(struct wm831x *wm831x, int irq);
 289 void wm831x_enable_irq(struct wm831x *wm831x, int irq);
 290
 291 #endif