1 /* 2 * Copyright (C) ST-Ericsson SA 2010 3 * 4 * License Terms: GNU General Public License, version 2 5 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson 6 */ 7 8 #ifndef __LINUX_MFD_STMPE_H 9 #define __LINUX_MFD_STMPE_H 10 11 #include <linux/mutex.h> 12 13 struct device; 14 struct regulator; 15 16 enum stmpe_block { 17 STMPE_BLOCK_GPIO = 1 << 0, 18 STMPE_BLOCK_KEYPAD = 1 << 1, 19 STMPE_BLOCK_TOUCHSCREEN = 1 << 2, 20 STMPE_BLOCK_ADC = 1 << 3, 21 STMPE_BLOCK_PWM = 1 << 4, 22 STMPE_BLOCK_ROTATOR = 1 << 5, 23 }; 24 25 enum stmpe_partnum { 26 STMPE610, 27 STMPE801, 28 STMPE811, 29 STMPE1600, 30 STMPE1601, 31 STMPE1801, 32 STMPE2401, 33 STMPE2403, 34 STMPE_NBR_PARTS 35 }; 36 37 /* 38 * For registers whose locations differ on variants, the correct address is 39 * obtained by indexing stmpe->regs with one of the following. 40 */ 41 enum { 42 STMPE_IDX_CHIP_ID, 43 STMPE_IDX_SYS_CTRL, 44 STMPE_IDX_SYS_CTRL2, 45 STMPE_IDX_ICR_LSB, 46 STMPE_IDX_IER_LSB, 47 STMPE_IDX_IER_MSB, 48 STMPE_IDX_ISR_LSB, 49 STMPE_IDX_ISR_MSB, 50 STMPE_IDX_GPMR_LSB, 51 STMPE_IDX_GPMR_CSB, 52 STMPE_IDX_GPMR_MSB, 53 STMPE_IDX_GPSR_LSB, 54 STMPE_IDX_GPSR_CSB, 55 STMPE_IDX_GPSR_MSB, 56 STMPE_IDX_GPCR_LSB, 57 STMPE_IDX_GPCR_CSB, 58 STMPE_IDX_GPCR_MSB, 59 STMPE_IDX_GPDR_LSB, 60 STMPE_IDX_GPDR_CSB, 61 STMPE_IDX_GPDR_MSB, 62 STMPE_IDX_GPEDR_LSB, 63 STMPE_IDX_GPEDR_CSB, 64 STMPE_IDX_GPEDR_MSB, 65 STMPE_IDX_GPRER_LSB, 66 STMPE_IDX_GPRER_CSB, 67 STMPE_IDX_GPRER_MSB, 68 STMPE_IDX_GPFER_LSB, 69 STMPE_IDX_GPFER_CSB, 70 STMPE_IDX_GPFER_MSB, 71 STMPE_IDX_GPPUR_LSB, 72 STMPE_IDX_GPPDR_LSB, 73 STMPE_IDX_GPAFR_U_MSB, 74 STMPE_IDX_IEGPIOR_LSB, 75 STMPE_IDX_IEGPIOR_CSB, 76 STMPE_IDX_IEGPIOR_MSB, 77 STMPE_IDX_ISGPIOR_LSB, 78 STMPE_IDX_ISGPIOR_CSB, 79 STMPE_IDX_ISGPIOR_MSB, 80 STMPE_IDX_MAX, 81 }; 82 83 84 struct stmpe_variant_info; 85 struct stmpe_client_info; 86 struct stmpe_platform_data; 87 88 /** 89 * struct stmpe - STMPE MFD structure 90 * @vcc: optional VCC regulator 91 * @vio: optional VIO regulator 92 * @lock: lock protecting I/O operations 93 * @irq_lock: IRQ bus lock 94 * @dev: device, mostly for dev_dbg() 95 * @irq_domain: IRQ domain 96 * @client: client - i2c or spi 97 * @ci: client specific information 98 * @partnum: part number 99 * @variant: the detected STMPE model number 100 * @regs: list of addresses of registers which are at different addresses on 101 * different variants. Indexed by one of STMPE_IDX_*. 102 * @irq: irq number for stmpe 103 * @num_gpios: number of gpios, differs for variants 104 * @ier: cache of IER registers for bus_lock 105 * @oldier: cache of IER registers for bus_lock 106 * @pdata: platform data 107 */ 108 struct stmpe { 109 struct regulator *vcc; 110 struct regulator *vio; 111 struct mutex lock; 112 struct mutex irq_lock; 113 struct device *dev; 114 struct irq_domain *domain; 115 void *client; 116 struct stmpe_client_info *ci; 117 enum stmpe_partnum partnum; 118 struct stmpe_variant_info *variant; 119 const u8 *regs; 120 121 int irq; 122 int num_gpios; 123 u8 ier[2]; 124 u8 oldier[2]; 125 struct stmpe_platform_data *pdata; 126 }; 127 128 extern int stmpe_reg_write(struct stmpe *stmpe, u8 reg, u8 data); 129 extern int stmpe_reg_read(struct stmpe *stmpe, u8 reg); 130 extern int stmpe_block_read(struct stmpe *stmpe, u8 reg, u8 length, 131 u8 *values); 132 extern int stmpe_block_write(struct stmpe *stmpe, u8 reg, u8 length, 133 const u8 *values); 134 extern int stmpe_set_bits(struct stmpe *stmpe, u8 reg, u8 mask, u8 val); 135 extern int stmpe_set_altfunc(struct stmpe *stmpe, u32 pins, 136 enum stmpe_block block); 137 extern int stmpe_enable(struct stmpe *stmpe, unsigned int blocks); 138 extern int stmpe_disable(struct stmpe *stmpe, unsigned int blocks); 139 140 #define STMPE_GPIO_NOREQ_811_TOUCH (0xf0) 141 142 #endif 143