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
172