| Linus Walleij | 14fa569 | 2009-05-21 23:17:06 +0200 | [diff] [blame^] | 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 | */ |
| 76 | struct 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 | |
| 89 | int ab3100_set_register(struct ab3100 *ab3100, u8 reg, u8 regval); |
| 90 | int ab3100_get_register(struct ab3100 *ab3100, u8 reg, u8 *regval); |
| 91 | int ab3100_get_register_page(struct ab3100 *ab3100, |
| 92 | u8 first_reg, u8 *regvals, u8 numregs); |
| 93 | int ab3100_mask_and_set_register(struct ab3100 *ab3100, |
| 94 | u8 reg, u8 andmask, u8 ormask); |
| 95 | u8 ab3100_get_chip_type(struct ab3100 *ab3100); |
| 96 | int ab3100_event_register(struct ab3100 *ab3100, |
| 97 | struct notifier_block *nb); |
| 98 | int ab3100_event_unregister(struct ab3100 *ab3100, |
| 99 | struct notifier_block *nb); |
| 100 | int ab3100_event_registers_startup_state_get(struct ab3100 *ab3100, |
| 101 | u32 *fatevent); |
| 102 | |
| 103 | #endif |