comparator.h

  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 * comparator.h  --  Comparator Aux ADC for Wolfson WM8350 PMIC
  4 *
  5 * Copyright 2007 Wolfson Microelectronics PLC
  6 */
  7
  8#ifndef __LINUX_MFD_WM8350_COMPARATOR_H_
  9#define __LINUX_MFD_WM8350_COMPARATOR_H_
 10
 11/*
 12 * Registers
 13 */
 14
 15#define WM8350_DIGITISER_CONTROL_1              0x90
 16#define WM8350_DIGITISER_CONTROL_2              0x91
 17#define WM8350_AUX1_READBACK                    0x98
 18#define WM8350_AUX2_READBACK                    0x99
 19#define WM8350_AUX3_READBACK                    0x9A
 20#define WM8350_AUX4_READBACK                    0x9B
 21#define WM8350_CHIP_TEMP_READBACK               0x9F
 22#define WM8350_GENERIC_COMPARATOR_CONTROL       0xA3
 23#define WM8350_GENERIC_COMPARATOR_1             0xA4
 24#define WM8350_GENERIC_COMPARATOR_2             0xA5
 25#define WM8350_GENERIC_COMPARATOR_3             0xA6
 26#define WM8350_GENERIC_COMPARATOR_4             0xA7
 27
 28/*
 29 * R144 (0x90) - Digitiser Control (1)
 30 */
 31#define WM8350_AUXADC_CTC                       0x4000
 32#define WM8350_AUXADC_POLL                      0x2000
 33#define WM8350_AUXADC_HIB_MODE                  0x1000
 34#define WM8350_AUXADC_SEL8                      0x0080
 35#define WM8350_AUXADC_SEL7                      0x0040
 36#define WM8350_AUXADC_SEL6                      0x0020
 37#define WM8350_AUXADC_SEL5                      0x0010
 38#define WM8350_AUXADC_SEL4                      0x0008
 39#define WM8350_AUXADC_SEL3                      0x0004
 40#define WM8350_AUXADC_SEL2                      0x0002
 41#define WM8350_AUXADC_SEL1                      0x0001
 42
 43/*
 44 * R145 (0x91) - Digitiser Control (2)
 45 */
 46#define WM8350_AUXADC_MASKMODE_MASK             0x3000
 47#define WM8350_AUXADC_CRATE_MASK                0x0700
 48#define WM8350_AUXADC_CAL                       0x0004
 49#define WM8350_AUX_RBMODE                       0x0002
 50#define WM8350_AUXADC_WAIT                      0x0001
 51
 52/*
 53 * R152 (0x98) - AUX1 Readback
 54 */
 55#define WM8350_AUXADC_SCALE1_MASK               0x6000
 56#define WM8350_AUXADC_REF1                      0x1000
 57#define WM8350_AUXADC_DATA1_MASK                0x0FFF
 58
 59/*
 60 * R153 (0x99) - AUX2 Readback
 61 */
 62#define WM8350_AUXADC_SCALE2_MASK               0x6000
 63#define WM8350_AUXADC_REF2                      0x1000
 64#define WM8350_AUXADC_DATA2_MASK                0x0FFF
 65
 66/*
 67 * R154 (0x9A) - AUX3 Readback
 68 */
 69#define WM8350_AUXADC_SCALE3_MASK               0x6000
 70#define WM8350_AUXADC_REF3                      0x1000
 71#define WM8350_AUXADC_DATA3_MASK                0x0FFF
 72
 73/*
 74 * R155 (0x9B) - AUX4 Readback
 75 */
 76#define WM8350_AUXADC_SCALE4_MASK               0x6000
 77#define WM8350_AUXADC_REF4                      0x1000
 78#define WM8350_AUXADC_DATA4_MASK                0x0FFF
 79
 80/*
 81 * R156 (0x9C) - USB Voltage Readback
 82 */
 83#define WM8350_AUXADC_DATA_USB_MASK             0x0FFF
 84
 85/*
 86 * R157 (0x9D) - LINE Voltage Readback
 87 */
 88#define WM8350_AUXADC_DATA_LINE_MASK            0x0FFF
 89
 90/*
 91 * R158 (0x9E) - BATT Voltage Readback
 92 */
 93#define WM8350_AUXADC_DATA_BATT_MASK            0x0FFF
 94
 95/*
 96 * R159 (0x9F) - Chip Temp Readback
 97 */
 98#define WM8350_AUXADC_DATA_CHIPTEMP_MASK        0x0FFF
 99
100/*
101 * R163 (0xA3) - Generic Comparator Control
102 */
103#define WM8350_DCMP4_ENA                        0x0008
104#define WM8350_DCMP3_ENA                        0x0004
105#define WM8350_DCMP2_ENA                        0x0002
106#define WM8350_DCMP1_ENA                        0x0001
107
108/*
109 * R164 (0xA4) - Generic comparator 1
110 */
111#define WM8350_DCMP1_SRCSEL_MASK                0xE000
112#define WM8350_DCMP1_GT                         0x1000
113#define WM8350_DCMP1_THR_MASK                   0x0FFF
114
115/*
116 * R165 (0xA5) - Generic comparator 2
117 */
118#define WM8350_DCMP2_SRCSEL_MASK                0xE000
119#define WM8350_DCMP2_GT                         0x1000
120#define WM8350_DCMP2_THR_MASK                   0x0FFF
121
122/*
123 * R166 (0xA6) - Generic comparator 3
124 */
125#define WM8350_DCMP3_SRCSEL_MASK                0xE000
126#define WM8350_DCMP3_GT                         0x1000
127#define WM8350_DCMP3_THR_MASK                   0x0FFF
128
129/*
130 * R167 (0xA7) - Generic comparator 4
131 */
132#define WM8350_DCMP4_SRCSEL_MASK                0xE000
133#define WM8350_DCMP4_GT                         0x1000
134#define WM8350_DCMP4_THR_MASK                   0x0FFF
135
136/*
137 * Interrupts.
138 */
139#define WM8350_IRQ_AUXADC_DATARDY		16
140#define WM8350_IRQ_AUXADC_DCOMP4		17
141#define WM8350_IRQ_AUXADC_DCOMP3		18
142#define WM8350_IRQ_AUXADC_DCOMP2		19
143#define WM8350_IRQ_AUXADC_DCOMP1		20
144#define WM8350_IRQ_SYS_HYST_COMP_FAIL		21
145#define WM8350_IRQ_SYS_CHIP_GT115		22
146#define WM8350_IRQ_SYS_CHIP_GT140		23
147
148/*
149 * USB/2, LINE & BATT = ((VRTC * 2) / 4095)) * 10e6 uV
150 * Where VRTC = 2.7 V
151 */
152#define WM8350_AUX_COEFF			1319
153
154#define WM8350_AUXADC_AUX1			0
155#define WM8350_AUXADC_AUX2			1
156#define WM8350_AUXADC_AUX3			2
157#define WM8350_AUXADC_AUX4			3
158#define WM8350_AUXADC_USB			4
159#define WM8350_AUXADC_LINE			5
160#define WM8350_AUXADC_BATT			6
161#define WM8350_AUXADC_TEMP			7
162
163struct wm8350;
164
165/*
166 * AUX ADC Readback
167 */
168int wm8350_read_auxadc(struct wm8350 *wm8350, int channel, int scale,
169		       int vref);
170
171#endif