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 18 #include <linux/mutex.h> 19 #include <linux/interrupt.h> 20 #include <linux/regmap.h> 21 22 #include <linux/mfd/wm8994/pdata.h> 23 24 enum wm8994_type { 25 WM8994 = 0, 26 WM8958 = 1, 27 WM1811 = 2, 28 }; 29 30 struct regulator_dev; 31 struct regulator_bulk_data; 32 struct irq_domain; 33 34 #define WM8994_NUM_GPIO_REGS 11 35 #define WM8994_NUM_LDO_REGS 2 36 #define WM8994_NUM_IRQ_REGS 2 37 38 #define WM8994_IRQ_TEMP_SHUT 0 39 #define WM8994_IRQ_MIC1_DET 1 40 #define WM8994_IRQ_MIC1_SHRT 2 41 #define WM8994_IRQ_MIC2_DET 3 42 #define WM8994_IRQ_MIC2_SHRT 4 43 #define WM8994_IRQ_FLL1_LOCK 5 44 #define WM8994_IRQ_FLL2_LOCK 6 45 #define WM8994_IRQ_SRC1_LOCK 7 46 #define WM8994_IRQ_SRC2_LOCK 8 47 #define WM8994_IRQ_AIF1DRC1_SIG_DET 9 48 #define WM8994_IRQ_AIF1DRC2_SIG_DET 10 49 #define WM8994_IRQ_AIF2DRC_SIG_DET 11 50 #define WM8994_IRQ_FIFOS_ERR 12 51 #define WM8994_IRQ_WSEQ_DONE 13 52 #define WM8994_IRQ_DCS_DONE 14 53 #define WM8994_IRQ_TEMP_WARN 15 54 55 /* GPIOs in the chip are numbered from 1-11 */ 56 #define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN) 57 58 struct wm8994 { 59 struct wm8994_pdata pdata; 60 61 enum wm8994_type type; 62 int revision; 63 int cust_id; 64 65 struct device *dev; 66 struct regmap *regmap; 67 68 bool ldo_ena_always_driven; 69 70 int gpio_base; 71 int irq_base; 72 73 int irq; 74 struct regmap_irq_chip_data *irq_data; 75 struct irq_domain *edge_irq; 76 77 /* Used over suspend/resume */ 78 bool suspended; 79 80 struct regulator_dev *dbvdd; 81 int num_supplies; 82 struct regulator_bulk_data *supplies; 83 }; 84 85 /* Device I/O API */ 86 87 static inline int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg) 88 { 89 unsigned int val; 90 int ret; 91 92 ret = regmap_read(wm8994->regmap, reg, &val); 93 94 if (ret < 0) 95 return ret; 96 else 97 return val; 98 } 99 100 static inline int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg, 101 unsigned short val) 102 { 103 return regmap_write(wm8994->regmap, reg, val); 104 } 105 106 static inline int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg, 107 int count, u16 *buf) 108 { 109 return regmap_bulk_read(wm8994->regmap, reg, buf, count); 110 } 111 112 static inline int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg, 113 int count, const u16 *buf) 114 { 115 return regmap_raw_write(wm8994->regmap, reg, buf, count * sizeof(u16)); 116 } 117 118 static inline int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg, 119 unsigned short mask, unsigned short val) 120 { 121 return regmap_update_bits(wm8994->regmap, reg, mask, val); 122 } 123 124 /* Helper to save on boilerplate */ 125 static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq, 126 irq_handler_t handler, const char *name, 127 void *data) 128 { 129 if (!wm8994->irq_data) 130 return -EINVAL; 131 return request_threaded_irq(regmap_irq_get_virq(wm8994->irq_data, irq), 132 NULL, handler, IRQF_TRIGGER_RISING, name, 133 data); 134 } 135 static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data) 136 { 137 if (!wm8994->irq_data) 138 return; 139 free_irq(regmap_irq_get_virq(wm8994->irq_data, irq), data); 140 } 141 142 int wm8994_irq_init(struct wm8994 *wm8994); 143 void wm8994_irq_exit(struct wm8994 *wm8994); 144 145 #endif 146