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 | |
163 | struct wm8350; |
164 | |
165 | /* |
166 | * AUX ADC Readback |
167 | */ |
168 | int wm8350_read_auxadc(struct wm8350 *wm8350, int channel, int scale, |
169 | int vref); |
170 | |
171 | #endif |
172 | |