tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2007-2009 ST-Ericsson AB
3 * License terms: GNU General Public License (GPL) version 2
4 * AB3100 core access functions
5 * Author: Linus Walleij <linus.walleij@stericsson.com>
6 */
7
8#include <linux/device.h>
9
10#ifndef MFD_AB3100_H
11#define MFD_AB3100_H
12
13#define ABUNKNOWN 0
14#define AB3000 1
15#define AB3100 2
16
17/*
18 * AB3100, EVENTA1, A2 and A3 event register flags
19 * these are catenated into a single 32-bit flag in the code
20 * for event notification broadcasts.
21 */
22#define AB3100_EVENTA1_ONSWA (0x01<<16)
23#define AB3100_EVENTA1_ONSWB (0x02<<16)
24#define AB3100_EVENTA1_ONSWC (0x04<<16)
25#define AB3100_EVENTA1_DCIO (0x08<<16)
26#define AB3100_EVENTA1_OVER_TEMP (0x10<<16)
27#define AB3100_EVENTA1_SIM_OFF (0x20<<16)
28#define AB3100_EVENTA1_VBUS (0x40<<16)
29#define AB3100_EVENTA1_VSET_USB (0x80<<16)
30
31#define AB3100_EVENTA2_READY_TX (0x01<<8)
32#define AB3100_EVENTA2_READY_RX (0x02<<8)
33#define AB3100_EVENTA2_OVERRUN_ERROR (0x04<<8)
34#define AB3100_EVENTA2_FRAMING_ERROR (0x08<<8)
35#define AB3100_EVENTA2_CHARG_OVERCURRENT (0x10<<8)
36#define AB3100_EVENTA2_MIDR (0x20<<8)
37#define AB3100_EVENTA2_BATTERY_REM (0x40<<8)
38#define AB3100_EVENTA2_ALARM (0x80<<8)
39
40#define AB3100_EVENTA3_ADC_TRIG5 (0x01)
41#define AB3100_EVENTA3_ADC_TRIG4 (0x02)
42#define AB3100_EVENTA3_ADC_TRIG3 (0x04)
43#define AB3100_EVENTA3_ADC_TRIG2 (0x08)
44#define AB3100_EVENTA3_ADC_TRIGVBAT (0x10)
45#define AB3100_EVENTA3_ADC_TRIGVTX (0x20)
46#define AB3100_EVENTA3_ADC_TRIG1 (0x40)
47#define AB3100_EVENTA3_ADC_TRIG0 (0x80)
48
49/* AB3100, STR register flags */
50#define AB3100_STR_ONSWA (0x01)
51#define AB3100_STR_ONSWB (0x02)
52#define AB3100_STR_ONSWC (0x04)
53#define AB3100_STR_DCIO (0x08)
54#define AB3100_STR_BOOT_MODE (0x10)
55#define AB3100_STR_SIM_OFF (0x20)
56#define AB3100_STR_BATT_REMOVAL (0x40)
57#define AB3100_STR_VBUS (0x80)
58
59/**
60 * struct ab3100
61 * @access_mutex: lock out concurrent accesses to the AB3100 registers
62 * @dev: pointer to the containing device
63 * @i2c_client: I2C client for this chip
64 * @testreg_client: secondary client for test registers
65 * @chip_name: name of this chip variant
66 * @chip_id: 8 bit chip ID for this chip variant
67 * @work: an event handling worker
68 * @event_subscribers: event subscribers are listed here
69 * @startup_events: a copy of the first reading of the event registers
70 * @startup_events_read: whether the first events have been read
71 *
72 * This struct is PRIVATE and devices using it should NOT
73 * access ANY fields. It is used as a token for calling the
74 * AB3100 functions.
75 */
76struct ab3100 {
77 struct mutex access_mutex;
78 struct device *dev;
79 struct i2c_client *i2c_client;
80 struct i2c_client *testreg_client;
81 char chip_name[32];
82 u8 chip_id;
83 struct work_struct work;
84 struct blocking_notifier_head event_subscribers;
85 u32 startup_events;
86 bool startup_events_read;
87};
88
89int ab3100_set_register(struct ab3100 *ab3100, u8 reg, u8 regval);
90int ab3100_get_register(struct ab3100 *ab3100, u8 reg, u8 *regval);
91int ab3100_get_register_page(struct ab3100 *ab3100,
92 u8 first_reg, u8 *regvals, u8 numregs);
93int ab3100_mask_and_set_register(struct ab3100 *ab3100,
94 u8 reg, u8 andmask, u8 ormask);
95u8 ab3100_get_chip_type(struct ab3100 *ab3100);
96int ab3100_event_register(struct ab3100 *ab3100,
97 struct notifier_block *nb);
98int ab3100_event_unregister(struct ab3100 *ab3100,
99 struct notifier_block *nb);
100int ab3100_event_registers_startup_state_get(struct ab3100 *ab3100,
101 u32 *fatevent);
102
103#endif