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 WM1811 = 2, 24 }; 25 26 struct regulator_dev; 27 struct regulator_bulk_data; 28 struct regmap; 29 30 #define WM8994_NUM_GPIO_REGS 11 31 #define WM8994_NUM_LDO_REGS 2 32 #define WM8994_NUM_IRQ_REGS 2 33 34 #define WM8994_IRQ_TEMP_SHUT 0 35 #define WM8994_IRQ_MIC1_DET 1 36 #define WM8994_IRQ_MIC1_SHRT 2 37 #define WM8994_IRQ_MIC2_DET 3 38 #define WM8994_IRQ_MIC2_SHRT 4 39 #define WM8994_IRQ_FLL1_LOCK 5 40 #define WM8994_IRQ_FLL2_LOCK 6 41 #define WM8994_IRQ_SRC1_LOCK 7 42 #define WM8994_IRQ_SRC2_LOCK 8 43 #define WM8994_IRQ_AIF1DRC1_SIG_DET 9 44 #define WM8994_IRQ_AIF1DRC2_SIG_DET 10 45 #define WM8994_IRQ_AIF2DRC_SIG_DET 11 46 #define WM8994_IRQ_FIFOS_ERR 12 47 #define WM8994_IRQ_WSEQ_DONE 13 48 #define WM8994_IRQ_DCS_DONE 14 49 #define WM8994_IRQ_TEMP_WARN 15 50 51 /* GPIOs in the chip are numbered from 1-11 */ 52 #define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN) 53 54 struct wm8994 { 55 struct mutex irq_lock; 56 57 enum wm8994_type type; 58 59 struct device *dev; 60 struct regmap *regmap; 61 62 int gpio_base; 63 int irq_base; 64 65 int irq; 66 u16 irq_masks_cur[WM8994_NUM_IRQ_REGS]; 67 u16 irq_masks_cache[WM8994_NUM_IRQ_REGS]; 68 69 /* Used over suspend/resume */ 70 bool suspended; 71 u16 ldo_regs[WM8994_NUM_LDO_REGS]; 72 u16 gpio_regs[WM8994_NUM_GPIO_REGS]; 73 74 struct regulator_dev *dbvdd; 75 int num_supplies; 76 struct regulator_bulk_data *supplies; 77 }; 78 79 /* Device I/O API */ 80 int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg); 81 int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg, 82 unsigned short val); 83 int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg, 84 unsigned short mask, unsigned short val); 85 int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg, 86 int count, u16 *buf); 87 int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg, 88 int count, const u16 *buf); 89 90 91 /* Helper to save on boilerplate */ 92 static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq, 93 irq_handler_t handler, const char *name, 94 void *data) 95 { 96 if (!wm8994->irq_base) 97 return -EINVAL; 98 return request_threaded_irq(wm8994->irq_base + irq, NULL, handler, 99 IRQF_TRIGGER_RISING, name, 100 data); 101 } 102 static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data) 103 { 104 if (!wm8994->irq_base) 105 return; 106 free_irq(wm8994->irq_base + irq, data); 107 } 108 109 int wm8994_irq_init(struct wm8994 *wm8994); 110 void wm8994_irq_exit(struct wm8994 *wm8994); 111 112 #endif 113