kernel/include/linux/mfd/wm8350/comparator.h

   1 /*
   2  * comparator.h  --  Comparator Aux ADC for Wolfson WM8350 PMIC
   3  *
   4  * Copyright 2007 Wolfson Microelectronics PLC
   5  *
   6  *  This program is free software; you can redistribute  it and/or modify it
   7  *  under  the terms of  the GNU General  Public License as published by the
   8  *  Free Software Foundation;  either version 2 of the  License, or (at your
   9  *  option) any later version.
  10  */
  11
  12 #ifndef __LINUX_MFD_WM8350_COMPARATOR_H_
  13 #define __LINUX_MFD_WM8350_COMPARATOR_H_
  14
  15 /*
  16  * Registers
  17  */
  18
  19 #define WM8350_DIGITISER_CONTROL_1              0x90
  20 #define WM8350_DIGITISER_CONTROL_2              0x91
  21 #define WM8350_AUX1_READBACK                    0x98
  22 #define WM8350_AUX2_READBACK                    0x99
  23 #define WM8350_AUX3_READBACK                    0x9A
  24 #define WM8350_AUX4_READBACK                    0x9B
  25 #define WM8350_CHIP_TEMP_READBACK               0x9F
  26 #define WM8350_GENERIC_COMPARATOR_CONTROL       0xA3
  27 #define WM8350_GENERIC_COMPARATOR_1             0xA4
  28 #define WM8350_GENERIC_COMPARATOR_2             0xA5
  29 #define WM8350_GENERIC_COMPARATOR_3             0xA6
  30 #define WM8350_GENERIC_COMPARATOR_4             0xA7
  31
  32 /*
  33  * R144 (0x90) - Digitiser Control (1)
  34  */
  35 #define WM8350_AUXADC_CTC                       0x4000
  36 #define WM8350_AUXADC_POLL                      0x2000
  37 #define WM8350_AUXADC_HIB_MODE                  0x1000
  38 #define WM8350_AUXADC_SEL8                      0x0080
  39 #define WM8350_AUXADC_SEL7                      0x0040
  40 #define WM8350_AUXADC_SEL6                      0x0020
  41 #define WM8350_AUXADC_SEL5                      0x0010
  42 #define WM8350_AUXADC_SEL4                      0x0008
  43 #define WM8350_AUXADC_SEL3                      0x0004
  44 #define WM8350_AUXADC_SEL2                      0x0002
  45 #define WM8350_AUXADC_SEL1                      0x0001
  46
  47 /*
  48  * R145 (0x91) - Digitiser Control (2)
  49  */
  50 #define WM8350_AUXADC_MASKMODE_MASK             0x3000
  51 #define WM8350_AUXADC_CRATE_MASK                0x0700
  52 #define WM8350_AUXADC_CAL                       0x0004
  53 #define WM8350_AUX_RBMODE                       0x0002
  54 #define WM8350_AUXADC_WAIT                      0x0001
  55
  56 /*
  57  * R152 (0x98) - AUX1 Readback
  58  */
  59 #define WM8350_AUXADC_SCALE1_MASK               0x6000
  60 #define WM8350_AUXADC_REF1                      0x1000
  61 #define WM8350_AUXADC_DATA1_MASK                0x0FFF
  62
  63 /*
  64  * R153 (0x99) - AUX2 Readback
  65  */
  66 #define WM8350_AUXADC_SCALE2_MASK               0x6000
  67 #define WM8350_AUXADC_REF2                      0x1000
  68 #define WM8350_AUXADC_DATA2_MASK                0x0FFF
  69
  70 /*
  71  * R154 (0x9A) - AUX3 Readback
  72  */
  73 #define WM8350_AUXADC_SCALE3_MASK               0x6000
  74 #define WM8350_AUXADC_REF3                      0x1000
  75 #define WM8350_AUXADC_DATA3_MASK                0x0FFF
  76
  77 /*
  78  * R155 (0x9B) - AUX4 Readback
  79  */
  80 #define WM8350_AUXADC_SCALE4_MASK               0x6000
  81 #define WM8350_AUXADC_REF4                      0x1000
  82 #define WM8350_AUXADC_DATA4_MASK                0x0FFF
  83
  84 /*
  85  * R156 (0x9C) - USB Voltage Readback
  86  */
  87 #define WM8350_AUXADC_DATA_USB_MASK             0x0FFF
  88
  89 /*
  90  * R157 (0x9D) - LINE Voltage Readback
  91  */
  92 #define WM8350_AUXADC_DATA_LINE_MASK            0x0FFF
  93
  94 /*
  95  * R158 (0x9E) - BATT Voltage Readback
  96  */
  97 #define WM8350_AUXADC_DATA_BATT_MASK            0x0FFF
  98
  99 /*
 100  * R159 (0x9F) - Chip Temp Readback
 101  */
 102 #define WM8350_AUXADC_DATA_CHIPTEMP_MASK        0x0FFF
 103
 104 /*
 105  * R163 (0xA3) - Generic Comparator Control
 106  */
 107 #define WM8350_DCMP4_ENA                        0x0008
 108 #define WM8350_DCMP3_ENA                        0x0004
 109 #define WM8350_DCMP2_ENA                        0x0002
 110 #define WM8350_DCMP1_ENA                        0x0001
 111
 112 /*
 113  * R164 (0xA4) - Generic comparator 1
 114  */
 115 #define WM8350_DCMP1_SRCSEL_MASK                0xE000
 116 #define WM8350_DCMP1_GT                         0x1000
 117 #define WM8350_DCMP1_THR_MASK                   0x0FFF
 118
 119 /*
 120  * R165 (0xA5) - Generic comparator 2
 121  */
 122 #define WM8350_DCMP2_SRCSEL_MASK                0xE000
 123 #define WM8350_DCMP2_GT                         0x1000
 124 #define WM8350_DCMP2_THR_MASK                   0x0FFF
 125
 126 /*
 127  * R166 (0xA6) - Generic comparator 3
 128  */
 129 #define WM8350_DCMP3_SRCSEL_MASK                0xE000
 130 #define WM8350_DCMP3_GT                         0x1000
 131 #define WM8350_DCMP3_THR_MASK                   0x0FFF
 132
 133 /*
 134  * R167 (0xA7) - Generic comparator 4
 135  */
 136 #define WM8350_DCMP4_SRCSEL_MASK                0xE000
 137 #define WM8350_DCMP4_GT                         0x1000
 138 #define WM8350_DCMP4_THR_MASK                   0x0FFF
 139
 140 /*
 141  * Interrupts.
 142  */
 143 #define WM8350_IRQ_AUXADC_DATARDY               16
 144 #define WM8350_IRQ_AUXADC_DCOMP4                17
 145 #define WM8350_IRQ_AUXADC_DCOMP3                18
 146 #define WM8350_IRQ_AUXADC_DCOMP2                19
 147 #define WM8350_IRQ_AUXADC_DCOMP1                20
 148 #define WM8350_IRQ_SYS_HYST_COMP_FAIL           21
 149 #define WM8350_IRQ_SYS_CHIP_GT115               22
 150 #define WM8350_IRQ_SYS_CHIP_GT140               23
 151
 152 /*
 153  * USB/2, LINE & BATT = ((VRTC * 2) / 4095)) * 10e6 uV
 154  * Where VRTC = 2.7 V
 155  */
 156 #define WM8350_AUX_COEFF                        1319
 157
 158 #define WM8350_AUXADC_AUX1                      0
 159 #define WM8350_AUXADC_AUX2                      1
 160 #define WM8350_AUXADC_AUX3                      2
 161 #define WM8350_AUXADC_AUX4                      3
 162 #define WM8350_AUXADC_USB                       4
 163 #define WM8350_AUXADC_LINE                      5
 164 #define WM8350_AUXADC_BATT                      6
 165 #define WM8350_AUXADC_TEMP                      7
 166
 167 struct wm8350;
 168
 169 /*
 170  * AUX ADC Readback
 171  */
 172 int wm8350_read_auxadc(struct wm8350 *wm8350, int channel, int scale,
 173                        int vref);
 174
 175 #endif