git://bbs.cooldavid.org / net-next-2.6.git / blame
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1 | /* |
| 2 | * include/linux/mfd/wm8994/core.h -- Core interface for WM8994 | |
| 3 | * | |
| 4 | * Copyright 2009 Wolfson Microelectronics PLC. | |
| 5 | * | |
| 6 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify it | |
| 9 | * under the terms of the GNU General Public License as published by the | |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 11 | * option) any later version. | |
| 12 | * | |
| 13 | */ | |
| 14 | ||
| 15 | #ifndef __MFD_WM8994_CORE_H__ | |
| 16 | #define __MFD_WM8994_CORE_H__ | |
| 17 | ||
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18 | #include <linux/interrupt.h> |
| 19 | ||
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20 | struct regulator_dev; |
| 21 | struct regulator_bulk_data; | |
| 22 | ||
| 23 | #define WM8994_NUM_GPIO_REGS 11 | |
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24 | #define WM8994_NUM_LDO_REGS 2 |
| 25 | #define WM8994_NUM_IRQ_REGS 2 | |
| 26 | ||
| 27 | #define WM8994_IRQ_TEMP_SHUT 0 | |
| 28 | #define WM8994_IRQ_MIC1_DET 1 | |
| 29 | #define WM8994_IRQ_MIC1_SHRT 2 | |
| 30 | #define WM8994_IRQ_MIC2_DET 3 | |
| 31 | #define WM8994_IRQ_MIC2_SHRT 4 | |
| 32 | #define WM8994_IRQ_FLL1_LOCK 5 | |
| 33 | #define WM8994_IRQ_FLL2_LOCK 6 | |
| 34 | #define WM8994_IRQ_SRC1_LOCK 7 | |
| 35 | #define WM8994_IRQ_SRC2_LOCK 8 | |
| 36 | #define WM8994_IRQ_AIF1DRC1_SIG_DET 9 | |
| 37 | #define WM8994_IRQ_AIF1DRC2_SIG_DET 10 | |
| 38 | #define WM8994_IRQ_AIF2DRC_SIG_DET 11 | |
| 39 | #define WM8994_IRQ_FIFOS_ERR 12 | |
| 40 | #define WM8994_IRQ_WSEQ_DONE 13 | |
| 41 | #define WM8994_IRQ_DCS_DONE 14 | |
| 42 | #define WM8994_IRQ_TEMP_WARN 15 | |
| 43 | ||
| 44 | /* GPIOs in the chip are numbered from 1-11 */ | |
| 45 | #define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN) | |
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46 | |
| 47 | struct wm8994 { | |
| 48 | struct mutex io_lock; | |
| c9fbf7e0 | 49 | struct mutex irq_lock; |
| 9e501086 MB |
50 | |
| 51 | struct device *dev; | |
| 52 | int (*read_dev)(struct wm8994 *wm8994, unsigned short reg, | |
| 53 | int bytes, void *dest); | |
| 54 | int (*write_dev)(struct wm8994 *wm8994, unsigned short reg, | |
| 55 | int bytes, void *src); | |
| 56 | ||
| 57 | void *control_data; | |
| 58 | ||
| 59 | int gpio_base; | |
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60 | int irq_base; |
| 61 | ||
| 62 | int irq; | |
| 63 | u16 irq_masks_cur[WM8994_NUM_IRQ_REGS]; | |
| 64 | u16 irq_masks_cache[WM8994_NUM_IRQ_REGS]; | |
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65 | |
| 66 | /* Used over suspend/resume */ | |
| 67 | u16 ldo_regs[WM8994_NUM_LDO_REGS]; | |
| 68 | u16 gpio_regs[WM8994_NUM_GPIO_REGS]; | |
| 69 | ||
| 70 | struct regulator_dev *dbvdd; | |
| 71 | struct regulator_bulk_data *supplies; | |
| 72 | }; | |
| 73 | ||
| 74 | /* Device I/O API */ | |
| 75 | int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg); | |
| 76 | int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg, | |
| 77 | unsigned short val); | |
| 78 | int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg, | |
| 79 | unsigned short mask, unsigned short val); | |
| 80 | int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg, | |
| 81 | int count, u16 *buf); | |
| 82 | ||
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83 | |
| 84 | /* Helper to save on boilerplate */ | |
| 85 | static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq, | |
| 86 | irq_handler_t handler, const char *name, | |
| 87 | void *data) | |
| 88 | { | |
| 89 | if (!wm8994->irq_base) | |
| 90 | return -EINVAL; | |
| 91 | return request_threaded_irq(wm8994->irq_base + irq, NULL, handler, | |
| 92 | IRQF_TRIGGER_RISING, name, | |
| 93 | data); | |
| 94 | } | |
| 95 | static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data) | |
| 96 | { | |
| 97 | if (!wm8994->irq_base) | |
| 98 | return; | |
| 99 | free_irq(wm8994->irq_base + irq, data); | |
| 100 | } | |
| 101 | ||
| 102 | int wm8994_irq_init(struct wm8994 *wm8994); | |
| 103 | void wm8994_irq_exit(struct wm8994 *wm8994); | |
| 104 | ||
| 9e501086 | 105 | #endif |