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#include <linux/regulator/machine.h>
10
11#ifndef MFD_AB3100_H
12#define MFD_AB3100_H
13
14#define ABUNKNOWN 0
15#define AB3000 1
16#define AB3100 2
17
18/*
19 * AB3100, EVENTA1, A2 and A3 event register flags
20 * these are catenated into a single 32-bit flag in the code
21 * for event notification broadcasts.
22 */
23#define AB3100_EVENTA1_ONSWA (0x01<<16)
24#define AB3100_EVENTA1_ONSWB (0x02<<16)
25#define AB3100_EVENTA1_ONSWC (0x04<<16)
26#define AB3100_EVENTA1_DCIO (0x08<<16)
27#define AB3100_EVENTA1_OVER_TEMP (0x10<<16)
28#define AB3100_EVENTA1_SIM_OFF (0x20<<16)
29#define AB3100_EVENTA1_VBUS (0x40<<16)
30#define AB3100_EVENTA1_VSET_USB (0x80<<16)
31
32#define AB3100_EVENTA2_READY_TX (0x01<<8)
33#define AB3100_EVENTA2_READY_RX (0x02<<8)
34#define AB3100_EVENTA2_OVERRUN_ERROR (0x04<<8)
35#define AB3100_EVENTA2_FRAMING_ERROR (0x08<<8)
36#define AB3100_EVENTA2_CHARG_OVERCURRENT (0x10<<8)
37#define AB3100_EVENTA2_MIDR (0x20<<8)
38#define AB3100_EVENTA2_BATTERY_REM (0x40<<8)
39#define AB3100_EVENTA2_ALARM (0x80<<8)
40
41#define AB3100_EVENTA3_ADC_TRIG5 (0x01)
42#define AB3100_EVENTA3_ADC_TRIG4 (0x02)
43#define AB3100_EVENTA3_ADC_TRIG3 (0x04)
44#define AB3100_EVENTA3_ADC_TRIG2 (0x08)
45#define AB3100_EVENTA3_ADC_TRIGVBAT (0x10)
46#define AB3100_EVENTA3_ADC_TRIGVTX (0x20)
47#define AB3100_EVENTA3_ADC_TRIG1 (0x40)
48#define AB3100_EVENTA3_ADC_TRIG0 (0x80)
49
50/* AB3100, STR register flags */
51#define AB3100_STR_ONSWA (0x01)
52#define AB3100_STR_ONSWB (0x02)
53#define AB3100_STR_ONSWC (0x04)
54#define AB3100_STR_DCIO (0x08)
55#define AB3100_STR_BOOT_MODE (0x10)
56#define AB3100_STR_SIM_OFF (0x20)
57#define AB3100_STR_BATT_REMOVAL (0x40)
58#define AB3100_STR_VBUS (0x80)
59
60/*
61 * AB3100 contains 8 regulators, one external regulator controller
62 * and a buck converter, further the LDO E and buck converter can
63 * have separate settings if they are in sleep mode, this is
64 * modeled as a separate regulator.
65 */
66#define AB3100_NUM_REGULATORS 10
67
68/**
69 * struct ab3100
70 * @access_mutex: lock out concurrent accesses to the AB3100 registers
71 * @dev: pointer to the containing device
72 * @i2c_client: I2C client for this chip
73 * @testreg_client: secondary client for test registers
74 * @chip_name: name of this chip variant
75 * @chip_id: 8 bit chip ID for this chip variant
76 * @event_subscribers: event subscribers are listed here
77 * @startup_events: a copy of the first reading of the event registers
78 * @startup_events_read: whether the first events have been read
79 *
80 * This struct is PRIVATE and devices using it should NOT
81 * access ANY fields. It is used as a token for calling the
82 * AB3100 functions.
83 */
84struct ab3100 {
85 struct mutex access_mutex;
86 struct device *dev;
87 struct i2c_client *i2c_client;
88 struct i2c_client *testreg_client;
89 char chip_name[32];
90 u8 chip_id;
91 struct blocking_notifier_head event_subscribers;
92 u32 startup_events;
93 bool startup_events_read;
94};
95
96/**
97 * struct ab3100_platform_data
98 * Data supplied to initialize board connections to the AB3100
99 * @reg_constraints: regulator constraints for target board
100 * the order of these constraints are: LDO A, C, D, E,
101 * F, G, H, K, EXT and BUCK.
102 * @reg_initvals: initial values for the regulator registers
103 * plus two sleep settings for LDO E and the BUCK converter.
104 * exactly AB3100_NUM_REGULATORS+2 values must be sent in.
105 * Order: LDO A, C, E, E sleep, F, G, H, K, EXT, BUCK,
106 * BUCK sleep, LDO D. (LDO D need to be initialized last.)
107 * @external_voltage: voltage level of the external regulator.
108 */
109struct ab3100_platform_data {
110 struct regulator_init_data reg_constraints[AB3100_NUM_REGULATORS];
111 u8 reg_initvals[AB3100_NUM_REGULATORS+2];
112 int external_voltage;
113};
114
115int ab3100_set_register_interruptible(struct ab3100 *ab3100, u8 reg, u8 regval);
116int ab3100_get_register_interruptible(struct ab3100 *ab3100, u8 reg, u8 *regval);
117int ab3100_get_register_page_interruptible(struct ab3100 *ab3100,
118 u8 first_reg, u8 *regvals, u8 numregs);
119int ab3100_mask_and_set_register_interruptible(struct ab3100 *ab3100,
120 u8 reg, u8 andmask, u8 ormask);
121u8 ab3100_get_chip_type(struct ab3100 *ab3100);
122int ab3100_event_register(struct ab3100 *ab3100,
123 struct notifier_block *nb);
124int ab3100_event_unregister(struct ab3100 *ab3100,
125 struct notifier_block *nb);
126int ab3100_event_registers_startup_state_get(struct ab3100 *ab3100,
127 u32 *fatevent);
128
129#endif