1 /* 2 * include/linux/mfd/wm8994/core.h -- Core interface for WM8994 3 * 4 * Copyright 2009 Wolfson Microelectronics PLC. 5 * 6 * Author: Mark Brown <[email protected]> 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 18 #include <linux/interrupt.h> 19 20 enum wm8994_type { 21 WM8994 = 0, 22 WM8958 = 1, 23 }; 24 25 struct regulator_dev; 26 struct regulator_bulk_data; 27 28 #define WM8994_NUM_GPIO_REGS 11 29 #define WM8994_NUM_LDO_REGS 2 30 #define WM8994_NUM_IRQ_REGS 2 31 32 #define WM8994_IRQ_TEMP_SHUT 0 33 #define WM8994_IRQ_MIC1_DET 1 34 #define WM8994_IRQ_MIC1_SHRT 2 35 #define WM8994_IRQ_MIC2_DET 3 36 #define WM8994_IRQ_MIC2_SHRT 4 37 #define WM8994_IRQ_FLL1_LOCK 5 38 #define WM8994_IRQ_FLL2_LOCK 6 39 #define WM8994_IRQ_SRC1_LOCK 7 40 #define WM8994_IRQ_SRC2_LOCK 8 41 #define WM8994_IRQ_AIF1DRC1_SIG_DET 9 42 #define WM8994_IRQ_AIF1DRC2_SIG_DET 10 43 #define WM8994_IRQ_AIF2DRC_SIG_DET 11 44 #define WM8994_IRQ_FIFOS_ERR 12 45 #define WM8994_IRQ_WSEQ_DONE 13 46 #define WM8994_IRQ_DCS_DONE 14 47 #define WM8994_IRQ_TEMP_WARN 15 48 49 /* GPIOs in the chip are numbered from 1-11 */ 50 #define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN) 51 52 struct wm8994 { 53 struct mutex io_lock; 54 struct mutex irq_lock; 55 56 enum wm8994_type type; 57 58 struct device *dev; 59 int (*read_dev)(struct wm8994 *wm8994, unsigned short reg, 60 int bytes, void *dest); 61 int (*write_dev)(struct wm8994 *wm8994, unsigned short reg, 62 int bytes, void *src); 63 64 void *control_data; 65 66 int gpio_base; 67 int irq_base; 68 69 int irq; 70 u16 irq_masks_cur[WM8994_NUM_IRQ_REGS]; 71 u16 irq_masks_cache[WM8994_NUM_IRQ_REGS]; 72 73 /* Used over suspend/resume */ 74 bool suspended; 75 u16 ldo_regs[WM8994_NUM_LDO_REGS]; 76 u16 gpio_regs[WM8994_NUM_GPIO_REGS]; 77 78 struct regulator_dev *dbvdd; 79 int num_supplies; 80 struct regulator_bulk_data *supplies; 81 }; 82 83 /* Device I/O API */ 84 int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg); 85 int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg, 86 unsigned short val); 87 int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg, 88 unsigned short mask, unsigned short val); 89 int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg, 90 int count, u16 *buf); 91 92 93 /* Helper to save on boilerplate */ 94 static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq, 95 irq_handler_t handler, const char *name, 96 void *data) 97 { 98 if (!wm8994->irq_base) 99 return -EINVAL; 100 return request_threaded_irq(wm8994->irq_base + irq, NULL, handler, 101 IRQF_TRIGGER_RISING, name, 102 data); 103 } 104 static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data) 105 { 106 if (!wm8994->irq_base) 107 return; 108 free_irq(wm8994->irq_base + irq, data); 109 } 110 111 int wm8994_irq_init(struct wm8994 *wm8994); 112 void wm8994_irq_exit(struct wm8994 *wm8994); 113 114 #endif 115