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 176