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linux
1/*
2 * Maxim8925 Interface
3 *
4 * Copyright (C) 2009 Marvell International Ltd.
5 * Haojian Zhuang <haojian.zhuang@marvell.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#ifndef __LINUX_MFD_MAX8925_H
13#define __LINUX_MFD_MAX8925_H
14
15#include <linux/mutex.h>
16#include <linux/interrupt.h>
17
18/* Unified sub device IDs for MAX8925 */
19enum {
20 MAX8925_ID_SD1,
21 MAX8925_ID_SD2,
22 MAX8925_ID_SD3,
23 MAX8925_ID_LDO1,
24 MAX8925_ID_LDO2,
25 MAX8925_ID_LDO3,
26 MAX8925_ID_LDO4,
27 MAX8925_ID_LDO5,
28 MAX8925_ID_LDO6,
29 MAX8925_ID_LDO7,
30 MAX8925_ID_LDO8,
31 MAX8925_ID_LDO9,
32 MAX8925_ID_LDO10,
33 MAX8925_ID_LDO11,
34 MAX8925_ID_LDO12,
35 MAX8925_ID_LDO13,
36 MAX8925_ID_LDO14,
37 MAX8925_ID_LDO15,
38 MAX8925_ID_LDO16,
39 MAX8925_ID_LDO17,
40 MAX8925_ID_LDO18,
41 MAX8925_ID_LDO19,
42 MAX8925_ID_LDO20,
43 MAX8925_ID_MAX,
44};
45
46enum {
47 /*
48 * Charging current threshold trigger going from fast charge
49 * to TOPOFF charge. From 5% to 20% of fasting charging current.
50 */
51 MAX8925_TOPOFF_THR_5PER,
52 MAX8925_TOPOFF_THR_10PER,
53 MAX8925_TOPOFF_THR_15PER,
54 MAX8925_TOPOFF_THR_20PER,
55};
56
57enum {
58 /* Fast charging current */
59 MAX8925_FCHG_85MA,
60 MAX8925_FCHG_300MA,
61 MAX8925_FCHG_460MA,
62 MAX8925_FCHG_600MA,
63 MAX8925_FCHG_700MA,
64 MAX8925_FCHG_800MA,
65 MAX8925_FCHG_900MA,
66 MAX8925_FCHG_1000MA,
67};
68
69/* Charger registers */
70#define MAX8925_CHG_IRQ1 (0x7e)
71#define MAX8925_CHG_IRQ2 (0x7f)
72#define MAX8925_CHG_IRQ1_MASK (0x80)
73#define MAX8925_CHG_IRQ2_MASK (0x81)
74#define MAX8925_CHG_STATUS (0x82)
75
76/* GPM registers */
77#define MAX8925_SYSENSEL (0x00)
78#define MAX8925_ON_OFF_IRQ1 (0x01)
79#define MAX8925_ON_OFF_IRQ1_MASK (0x02)
80#define MAX8925_ON_OFF_STATUS (0x03)
81#define MAX8925_ON_OFF_IRQ2 (0x0d)
82#define MAX8925_ON_OFF_IRQ2_MASK (0x0e)
83#define MAX8925_RESET_CNFG (0x0f)
84
85/* Touch registers */
86#define MAX8925_TSC_IRQ (0x00)
87#define MAX8925_TSC_IRQ_MASK (0x01)
88#define MAX8925_TSC_CNFG1 (0x02)
89#define MAX8925_ADC_SCHED (0x10)
90#define MAX8925_ADC_RES_END (0x6f)
91
92#define MAX8925_NREF_OK (1 << 4)
93
94/* RTC registers */
95#define MAX8925_ALARM0_CNTL (0x18)
96#define MAX8925_ALARM1_CNTL (0x19)
97#define MAX8925_RTC_IRQ (0x1c)
98#define MAX8925_RTC_IRQ_MASK (0x1d)
99#define MAX8925_MPL_CNTL (0x1e)
100
101/* WLED registers */
102#define MAX8925_WLED_MODE_CNTL (0x84)
103#define MAX8925_WLED_CNTL (0x85)
104
105/* MAX8925 Registers */
106#define MAX8925_SDCTL1 (0x04)
107#define MAX8925_SDCTL2 (0x07)
108#define MAX8925_SDCTL3 (0x0A)
109#define MAX8925_SDV1 (0x06)
110#define MAX8925_SDV2 (0x09)
111#define MAX8925_SDV3 (0x0C)
112#define MAX8925_LDOCTL1 (0x18)
113#define MAX8925_LDOCTL2 (0x1C)
114#define MAX8925_LDOCTL3 (0x20)
115#define MAX8925_LDOCTL4 (0x24)
116#define MAX8925_LDOCTL5 (0x28)
117#define MAX8925_LDOCTL6 (0x2C)
118#define MAX8925_LDOCTL7 (0x30)
119#define MAX8925_LDOCTL8 (0x34)
120#define MAX8925_LDOCTL9 (0x38)
121#define MAX8925_LDOCTL10 (0x3C)
122#define MAX8925_LDOCTL11 (0x40)
123#define MAX8925_LDOCTL12 (0x44)
124#define MAX8925_LDOCTL13 (0x48)
125#define MAX8925_LDOCTL14 (0x4C)
126#define MAX8925_LDOCTL15 (0x50)
127#define MAX8925_LDOCTL16 (0x10)
128#define MAX8925_LDOCTL17 (0x14)
129#define MAX8925_LDOCTL18 (0x72)
130#define MAX8925_LDOCTL19 (0x5C)
131#define MAX8925_LDOCTL20 (0x9C)
132#define MAX8925_LDOVOUT1 (0x1A)
133#define MAX8925_LDOVOUT2 (0x1E)
134#define MAX8925_LDOVOUT3 (0x22)
135#define MAX8925_LDOVOUT4 (0x26)
136#define MAX8925_LDOVOUT5 (0x2A)
137#define MAX8925_LDOVOUT6 (0x2E)
138#define MAX8925_LDOVOUT7 (0x32)
139#define MAX8925_LDOVOUT8 (0x36)
140#define MAX8925_LDOVOUT9 (0x3A)
141#define MAX8925_LDOVOUT10 (0x3E)
142#define MAX8925_LDOVOUT11 (0x42)
143#define MAX8925_LDOVOUT12 (0x46)
144#define MAX8925_LDOVOUT13 (0x4A)
145#define MAX8925_LDOVOUT14 (0x4E)
146#define MAX8925_LDOVOUT15 (0x52)
147#define MAX8925_LDOVOUT16 (0x12)
148#define MAX8925_LDOVOUT17 (0x16)
149#define MAX8925_LDOVOUT18 (0x74)
150#define MAX8925_LDOVOUT19 (0x5E)
151#define MAX8925_LDOVOUT20 (0x9E)
152
153/* bit definitions */
154#define CHG_IRQ1_MASK (0x07)
155#define CHG_IRQ2_MASK (0xff)
156#define ON_OFF_IRQ1_MASK (0xff)
157#define ON_OFF_IRQ2_MASK (0x03)
158#define TSC_IRQ_MASK (0x03)
159#define RTC_IRQ_MASK (0x0c)
160
161#define MAX8925_MAX_REGULATOR (23)
162
163#define MAX8925_NAME_SIZE (32)
164
165/* IRQ definitions */
166enum {
167 MAX8925_IRQ_VCHG_DC_OVP,
168 MAX8925_IRQ_VCHG_DC_F,
169 MAX8925_IRQ_VCHG_DC_R,
170 MAX8925_IRQ_VCHG_THM_OK_R,
171 MAX8925_IRQ_VCHG_THM_OK_F,
172 MAX8925_IRQ_VCHG_SYSLOW_F,
173 MAX8925_IRQ_VCHG_SYSLOW_R,
174 MAX8925_IRQ_VCHG_RST,
175 MAX8925_IRQ_VCHG_DONE,
176 MAX8925_IRQ_VCHG_TOPOFF,
177 MAX8925_IRQ_VCHG_TMR_FAULT,
178 MAX8925_IRQ_GPM_RSTIN,
179 MAX8925_IRQ_GPM_MPL,
180 MAX8925_IRQ_GPM_SW_3SEC,
181 MAX8925_IRQ_GPM_EXTON_F,
182 MAX8925_IRQ_GPM_EXTON_R,
183 MAX8925_IRQ_GPM_SW_1SEC,
184 MAX8925_IRQ_GPM_SW_F,
185 MAX8925_IRQ_GPM_SW_R,
186 MAX8925_IRQ_GPM_SYSCKEN_F,
187 MAX8925_IRQ_GPM_SYSCKEN_R,
188 MAX8925_IRQ_RTC_ALARM1,
189 MAX8925_IRQ_RTC_ALARM0,
190 MAX8925_IRQ_TSC_STICK,
191 MAX8925_IRQ_TSC_NSTICK,
192 MAX8925_NR_IRQS,
193};
194
195struct max8925_chip {
196 struct device *dev;
197 struct i2c_client *i2c;
198 struct i2c_client *adc;
199 struct i2c_client *rtc;
200 struct mutex io_lock;
201 struct mutex irq_lock;
202
203 int irq_base;
204 int core_irq;
205 int tsc_irq;
206
207 unsigned int wakeup_flag;
208};
209
210struct max8925_backlight_pdata {
211 int lxw_scl; /* 0/1 -- 0.8Ohm/0.4Ohm */
212 int lxw_freq; /* 700KHz ~ 1400KHz */
213 int dual_string; /* 0/1 -- single/dual string */
214};
215
216struct max8925_touch_pdata {
217 unsigned int flags;
218};
219
220struct max8925_power_pdata {
221 int (*set_charger)(int);
222 unsigned batt_detect:1;
223 unsigned topoff_threshold:2;
224 unsigned fast_charge:3; /* charge current */
225 unsigned no_temp_support:1; /* set if no temperature detect */
226 unsigned no_insert_detect:1; /* set if no ac insert detect */
227 char **supplied_to;
228 int num_supplicants;
229};
230
231/*
232 * irq_base: stores IRQ base number of MAX8925 in platform
233 * tsc_irq: stores IRQ number of MAX8925 TSC
234 */
235struct max8925_platform_data {
236 struct max8925_backlight_pdata *backlight;
237 struct max8925_touch_pdata *touch;
238 struct max8925_power_pdata *power;
239 struct regulator_init_data *regulator[MAX8925_MAX_REGULATOR];
240
241 int irq_base;
242 int tsc_irq;
243};
244
245extern int max8925_reg_read(struct i2c_client *, int);
246extern int max8925_reg_write(struct i2c_client *, int, unsigned char);
247extern int max8925_bulk_read(struct i2c_client *, int, int, unsigned char *);
248extern int max8925_bulk_write(struct i2c_client *, int, int, unsigned char *);
249extern int max8925_set_bits(struct i2c_client *, int, unsigned char,
250 unsigned char);
251
252extern int max8925_device_init(struct max8925_chip *,
253 struct max8925_platform_data *);
254extern void max8925_device_exit(struct max8925_chip *);
255#endif /* __LINUX_MFD_MAX8925_H */
256