diff options
| author | Linus Walleij <linus.ml.walleij@gmail.com> | 2009-05-21 23:17:06 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameol@linux.intel.com> | 2009-06-17 19:41:34 +0200 |
| commit | 14fa56917d73d823538151b0429d98211fa439c1 (patch) | |
| tree | eba45067df4f622dc6656cf82a0c96ba73ab2150 /include/linux/mfd | |
| parent | 516eca2726dce2ead8750366d8f66dd345ce55e3 (diff) | |
mfd: add U300 AB3100 core support
This adds a core driver for the AB3100 mixed-signal circuit
found in the ST-Ericsson U300 series platforms. This driver
is a singleton proxy for all accesses to the AB3100
sub-drivers which will be merged on top of this one, RTC,
regulators, battery and system power control, vibrator,
LEDs, and an ALSA codec.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Reviewed-by: Mike Rapoport <mike@compulab.co.il>
Reviewed-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include/linux/mfd')
| -rw-r--r-- | include/linux/mfd/ab3100.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/include/linux/mfd/ab3100.h b/include/linux/mfd/ab3100.h new file mode 100644 index 00000000000..7a3f316e384 --- /dev/null +++ b/include/linux/mfd/ab3100.h @@ -0,0 +1,103 @@ +/* + * Copyright (C) 2007-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * AB3100 core access functions + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ + +#include <linux/device.h> + +#ifndef MFD_AB3100_H +#define MFD_AB3100_H + +#define ABUNKNOWN 0 +#define AB3000 1 +#define AB3100 2 + +/* + * AB3100, EVENTA1, A2 and A3 event register flags + * these are catenated into a single 32-bit flag in the code + * for event notification broadcasts. + */ +#define AB3100_EVENTA1_ONSWA (0x01<<16) +#define AB3100_EVENTA1_ONSWB (0x02<<16) +#define AB3100_EVENTA1_ONSWC (0x04<<16) +#define AB3100_EVENTA1_DCIO (0x08<<16) +#define AB3100_EVENTA1_OVER_TEMP (0x10<<16) +#define AB3100_EVENTA1_SIM_OFF (0x20<<16) +#define AB3100_EVENTA1_VBUS (0x40<<16) +#define AB3100_EVENTA1_VSET_USB (0x80<<16) + +#define AB3100_EVENTA2_READY_TX (0x01<<8) +#define AB3100_EVENTA2_READY_RX (0x02<<8) +#define AB3100_EVENTA2_OVERRUN_ERROR (0x04<<8) +#define AB3100_EVENTA2_FRAMING_ERROR (0x08<<8) +#define AB3100_EVENTA2_CHARG_OVERCURRENT (0x10<<8) +#define AB3100_EVENTA2_MIDR (0x20<<8) +#define AB3100_EVENTA2_BATTERY_REM (0x40<<8) +#define AB3100_EVENTA2_ALARM (0x80<<8) + +#define AB3100_EVENTA3_ADC_TRIG5 (0x01) +#define AB3100_EVENTA3_ADC_TRIG4 (0x02) +#define AB3100_EVENTA3_ADC_TRIG3 (0x04) +#define AB3100_EVENTA3_ADC_TRIG2 (0x08) +#define AB3100_EVENTA3_ADC_TRIGVBAT (0x10) +#define AB3100_EVENTA3_ADC_TRIGVTX (0x20) +#define AB3100_EVENTA3_ADC_TRIG1 (0x40) +#define AB3100_EVENTA3_ADC_TRIG0 (0x80) + +/* AB3100, STR register flags */ +#define AB3100_STR_ONSWA (0x01) +#define AB3100_STR_ONSWB (0x02) +#define AB3100_STR_ONSWC (0x04) +#define AB3100_STR_DCIO (0x08) +#define AB3100_STR_BOOT_MODE (0x10) +#define AB3100_STR_SIM_OFF (0x20) +#define AB3100_STR_BATT_REMOVAL (0x40) +#define AB3100_STR_VBUS (0x80) + +/** + * struct ab3100 + * @access_mutex: lock out concurrent accesses to the AB3100 registers + * @dev: pointer to the containing device + * @i2c_client: I2C client for this chip + * @testreg_client: secondary client for test registers + * @chip_name: name of this chip variant + * @chip_id: 8 bit chip ID for this chip variant + * @work: an event handling worker + * @event_subscribers: event subscribers are listed here + * @startup_events: a copy of the first reading of the event registers + * @startup_events_read: whether the first events have been read + * + * This struct is PRIVATE and devices using it should NOT + * access ANY fields. It is used as a token for calling the + * AB3100 functions. + */ +struct ab3100 { + struct mutex access_mutex; + struct device *dev; + struct i2c_client *i2c_client; + struct i2c_client *testreg_client; + char chip_name[32]; + u8 chip_id; + struct work_struct work; + struct blocking_notifier_head event_subscribers; + u32 startup_events; + bool startup_events_read; +}; + +int ab3100_set_register(struct ab3100 *ab3100, u8 reg, u8 regval); +int ab3100_get_register(struct ab3100 *ab3100, u8 reg, u8 *regval); +int ab3100_get_register_page(struct ab3100 *ab3100, + u8 first_reg, u8 *regvals, u8 numregs); +int ab3100_mask_and_set_register(struct ab3100 *ab3100, + u8 reg, u8 andmask, u8 ormask); +u8 ab3100_get_chip_type(struct ab3100 *ab3100); +int ab3100_event_register(struct ab3100 *ab3100, + struct notifier_block *nb); +int ab3100_event_unregister(struct ab3100 *ab3100, + struct notifier_block *nb); +int ab3100_event_registers_startup_state_get(struct ab3100 *ab3100, + u32 *fatevent); + +#endif |