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14fa5691 LW |
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> | |
8aba721b | 9 | #include <linux/workqueue.h> |
d619bc14 | 10 | #include <linux/regulator/machine.h> |
14fa5691 LW |
11 | |
12 | #ifndef MFD_AB3100_H | |
13 | #define MFD_AB3100_H | |
14 | ||
15 | #define ABUNKNOWN 0 | |
16 | #define AB3000 1 | |
17 | #define AB3100 2 | |
18 | ||
19 | /* | |
20 | * AB3100, EVENTA1, A2 and A3 event register flags | |
21 | * these are catenated into a single 32-bit flag in the code | |
22 | * for event notification broadcasts. | |
23 | */ | |
24 | #define AB3100_EVENTA1_ONSWA (0x01<<16) | |
25 | #define AB3100_EVENTA1_ONSWB (0x02<<16) | |
26 | #define AB3100_EVENTA1_ONSWC (0x04<<16) | |
27 | #define AB3100_EVENTA1_DCIO (0x08<<16) | |
28 | #define AB3100_EVENTA1_OVER_TEMP (0x10<<16) | |
29 | #define AB3100_EVENTA1_SIM_OFF (0x20<<16) | |
30 | #define AB3100_EVENTA1_VBUS (0x40<<16) | |
31 | #define AB3100_EVENTA1_VSET_USB (0x80<<16) | |
32 | ||
33 | #define AB3100_EVENTA2_READY_TX (0x01<<8) | |
34 | #define AB3100_EVENTA2_READY_RX (0x02<<8) | |
35 | #define AB3100_EVENTA2_OVERRUN_ERROR (0x04<<8) | |
36 | #define AB3100_EVENTA2_FRAMING_ERROR (0x08<<8) | |
37 | #define AB3100_EVENTA2_CHARG_OVERCURRENT (0x10<<8) | |
38 | #define AB3100_EVENTA2_MIDR (0x20<<8) | |
39 | #define AB3100_EVENTA2_BATTERY_REM (0x40<<8) | |
40 | #define AB3100_EVENTA2_ALARM (0x80<<8) | |
41 | ||
42 | #define AB3100_EVENTA3_ADC_TRIG5 (0x01) | |
43 | #define AB3100_EVENTA3_ADC_TRIG4 (0x02) | |
44 | #define AB3100_EVENTA3_ADC_TRIG3 (0x04) | |
45 | #define AB3100_EVENTA3_ADC_TRIG2 (0x08) | |
46 | #define AB3100_EVENTA3_ADC_TRIGVBAT (0x10) | |
47 | #define AB3100_EVENTA3_ADC_TRIGVTX (0x20) | |
48 | #define AB3100_EVENTA3_ADC_TRIG1 (0x40) | |
49 | #define AB3100_EVENTA3_ADC_TRIG0 (0x80) | |
50 | ||
51 | /* AB3100, STR register flags */ | |
52 | #define AB3100_STR_ONSWA (0x01) | |
53 | #define AB3100_STR_ONSWB (0x02) | |
54 | #define AB3100_STR_ONSWC (0x04) | |
55 | #define AB3100_STR_DCIO (0x08) | |
56 | #define AB3100_STR_BOOT_MODE (0x10) | |
57 | #define AB3100_STR_SIM_OFF (0x20) | |
58 | #define AB3100_STR_BATT_REMOVAL (0x40) | |
59 | #define AB3100_STR_VBUS (0x80) | |
60 | ||
d619bc14 LW |
61 | /* |
62 | * AB3100 contains 8 regulators, one external regulator controller | |
63 | * and a buck converter, further the LDO E and buck converter can | |
64 | * have separate settings if they are in sleep mode, this is | |
65 | * modeled as a separate regulator. | |
66 | */ | |
67 | #define AB3100_NUM_REGULATORS 10 | |
68 | ||
14fa5691 LW |
69 | /** |
70 | * struct ab3100 | |
71 | * @access_mutex: lock out concurrent accesses to the AB3100 registers | |
72 | * @dev: pointer to the containing device | |
73 | * @i2c_client: I2C client for this chip | |
74 | * @testreg_client: secondary client for test registers | |
75 | * @chip_name: name of this chip variant | |
76 | * @chip_id: 8 bit chip ID for this chip variant | |
77 | * @work: an event handling worker | |
78 | * @event_subscribers: event subscribers are listed here | |
79 | * @startup_events: a copy of the first reading of the event registers | |
80 | * @startup_events_read: whether the first events have been read | |
81 | * | |
82 | * This struct is PRIVATE and devices using it should NOT | |
83 | * access ANY fields. It is used as a token for calling the | |
84 | * AB3100 functions. | |
85 | */ | |
86 | struct ab3100 { | |
87 | struct mutex access_mutex; | |
88 | struct device *dev; | |
89 | struct i2c_client *i2c_client; | |
90 | struct i2c_client *testreg_client; | |
91 | char chip_name[32]; | |
92 | u8 chip_id; | |
93 | struct work_struct work; | |
94 | struct blocking_notifier_head event_subscribers; | |
95 | u32 startup_events; | |
96 | bool startup_events_read; | |
97 | }; | |
98 | ||
d619bc14 LW |
99 | /** |
100 | * struct ab3100_platform_data | |
101 | * Data supplied to initialize board connections to the AB3100 | |
102 | * @reg_constraints: regulator constraints for target board | |
103 | * the order of these constraints are: LDO A, C, D, E, | |
104 | * F, G, H, K, EXT and BUCK. | |
105 | * @reg_initvals: initial values for the regulator registers | |
106 | * plus two sleep settings for LDO E and the BUCK converter. | |
107 | * exactly AB3100_NUM_REGULATORS+2 values must be sent in. | |
108 | * Order: LDO A, C, E, E sleep, F, G, H, K, EXT, BUCK, | |
109 | * BUCK sleep, LDO D. (LDO D need to be initialized last.) | |
110 | * @external_voltage: voltage level of the external regulator. | |
111 | */ | |
112 | struct ab3100_platform_data { | |
113 | struct regulator_init_data reg_constraints[AB3100_NUM_REGULATORS]; | |
114 | u8 reg_initvals[AB3100_NUM_REGULATORS+2]; | |
115 | int external_voltage; | |
116 | }; | |
117 | ||
956f25a6 LW |
118 | int ab3100_set_register_interruptible(struct ab3100 *ab3100, u8 reg, u8 regval); |
119 | int ab3100_get_register_interruptible(struct ab3100 *ab3100, u8 reg, u8 *regval); | |
120 | int ab3100_get_register_page_interruptible(struct ab3100 *ab3100, | |
14fa5691 | 121 | u8 first_reg, u8 *regvals, u8 numregs); |
956f25a6 | 122 | int ab3100_mask_and_set_register_interruptible(struct ab3100 *ab3100, |
14fa5691 LW |
123 | u8 reg, u8 andmask, u8 ormask); |
124 | u8 ab3100_get_chip_type(struct ab3100 *ab3100); | |
125 | int ab3100_event_register(struct ab3100 *ab3100, | |
126 | struct notifier_block *nb); | |
127 | int ab3100_event_unregister(struct ab3100 *ab3100, | |
128 | struct notifier_block *nb); | |
129 | int ab3100_event_registers_startup_state_get(struct ab3100 *ab3100, | |
130 | u32 *fatevent); | |
131 | ||
132 | #endif |