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 15 enum stmpe_block { 16 STMPE_BLOCK_GPIO = 1 << 0, 17 STMPE_BLOCK_KEYPAD = 1 << 1, 18 STMPE_BLOCK_TOUCHSCREEN = 1 << 2, 19 STMPE_BLOCK_ADC = 1 << 3, 20 STMPE_BLOCK_PWM = 1 << 4, 21 STMPE_BLOCK_ROTATOR = 1 << 5, 22 }; 23 24 enum stmpe_partnum { 25 STMPE610, 26 STMPE801, 27 STMPE811, 28 STMPE1601, 29 STMPE1801, 30 STMPE2401, 31 STMPE2403, 32 STMPE_NBR_PARTS 33 }; 34 35 /* 36 * For registers whose locations differ on variants, the correct address is 37 * obtained by indexing stmpe->regs with one of the following. 38 */ 39 enum { 40 STMPE_IDX_CHIP_ID, 41 STMPE_IDX_ICR_LSB, 42 STMPE_IDX_IER_LSB, 43 STMPE_IDX_ISR_LSB, 44 STMPE_IDX_ISR_MSB, 45 STMPE_IDX_GPMR_LSB, 46 STMPE_IDX_GPSR_LSB, 47 STMPE_IDX_GPCR_LSB, 48 STMPE_IDX_GPDR_LSB, 49 STMPE_IDX_GPEDR_MSB, 50 STMPE_IDX_GPRER_LSB, 51 STMPE_IDX_GPFER_LSB, 52 STMPE_IDX_GPAFR_U_MSB, 53 STMPE_IDX_IEGPIOR_LSB, 54 STMPE_IDX_ISGPIOR_LSB, 55 STMPE_IDX_ISGPIOR_MSB, 56 STMPE_IDX_MAX, 57 }; 58 59 60 struct stmpe_variant_info; 61 struct stmpe_client_info; 62 63 /** 64 * struct stmpe - STMPE MFD structure 65 * @lock: lock protecting I/O operations 66 * @irq_lock: IRQ bus lock 67 * @dev: device, mostly for dev_dbg() 68 * @irq_domain: IRQ domain 69 * @client: client - i2c or spi 70 * @ci: client specific information 71 * @partnum: part number 72 * @variant: the detected STMPE model number 73 * @regs: list of addresses of registers which are at different addresses on 74 * different variants. Indexed by one of STMPE_IDX_*. 75 * @irq: irq number for stmpe 76 * @irq_base: starting IRQ number for internal IRQs 77 * @num_gpios: number of gpios, differs for variants 78 * @ier: cache of IER registers for bus_lock 79 * @oldier: cache of IER registers for bus_lock 80 * @pdata: platform data 81 */ 82 struct stmpe { 83 struct mutex lock; 84 struct mutex irq_lock; 85 struct device *dev; 86 struct irq_domain *domain; 87 void *client; 88 struct stmpe_client_info *ci; 89 enum stmpe_partnum partnum; 90 struct stmpe_variant_info *variant; 91 const u8 *regs; 92 93 int irq; 94 int irq_base; 95 int num_gpios; 96 u8 ier[2]; 97 u8 oldier[2]; 98 struct stmpe_platform_data *pdata; 99 }; 100 101 extern int stmpe_reg_write(struct stmpe *stmpe, u8 reg, u8 data); 102 extern int stmpe_reg_read(struct stmpe *stmpe, u8 reg); 103 extern int stmpe_block_read(struct stmpe *stmpe, u8 reg, u8 length, 104 u8 *values); 105 extern int stmpe_block_write(struct stmpe *stmpe, u8 reg, u8 length, 106 const u8 *values); 107 extern int stmpe_set_bits(struct stmpe *stmpe, u8 reg, u8 mask, u8 val); 108 extern int stmpe_set_altfunc(struct stmpe *stmpe, u32 pins, 109 enum stmpe_block block); 110 extern int stmpe_enable(struct stmpe *stmpe, unsigned int blocks); 111 extern int stmpe_disable(struct stmpe *stmpe, unsigned int blocks); 112 113 struct matrix_keymap_data; 114 115 /** 116 * struct stmpe_keypad_platform_data - STMPE keypad platform data 117 * @keymap_data: key map table and size 118 * @debounce_ms: debounce interval, in ms. Maximum is 119 * %STMPE_KEYPAD_MAX_DEBOUNCE. 120 * @scan_count: number of key scanning cycles to confirm key data. 121 * Maximum is %STMPE_KEYPAD_MAX_SCAN_COUNT. 122 * @no_autorepeat: disable key autorepeat 123 */ 124 struct stmpe_keypad_platform_data { 125 const struct matrix_keymap_data *keymap_data; 126 unsigned int debounce_ms; 127 unsigned int scan_count; 128 bool no_autorepeat; 129 }; 130 131 #define STMPE_GPIO_NOREQ_811_TOUCH (0xf0) 132 133 /** 134 * struct stmpe_gpio_platform_data - STMPE GPIO platform data 135 * @gpio_base: first gpio number assigned. A maximum of 136 * %STMPE_NR_GPIOS GPIOs will be allocated. 137 * @norequest_mask: bitmask specifying which GPIOs should _not_ be 138 * requestable due to different usage (e.g. touch, keypad) 139 * STMPE_GPIO_NOREQ_* macros can be used here. 140 * @setup: board specific setup callback. 141 * @remove: board specific remove callback 142 */ 143 struct stmpe_gpio_platform_data { 144 int gpio_base; 145 unsigned norequest_mask; 146 void (*setup)(struct stmpe *stmpe, unsigned gpio_base); 147 void (*remove)(struct stmpe *stmpe, unsigned gpio_base); 148 }; 149 150 /** 151 * struct stmpe_ts_platform_data - stmpe811 touch screen controller platform 152 * data 153 * @sample_time: ADC converstion time in number of clock. 154 * (0 -> 36 clocks, 1 -> 44 clocks, 2 -> 56 clocks, 3 -> 64 clocks, 155 * 4 -> 80 clocks, 5 -> 96 clocks, 6 -> 144 clocks), 156 * recommended is 4. 157 * @mod_12b: ADC Bit mode (0 -> 10bit ADC, 1 -> 12bit ADC) 158 * @ref_sel: ADC reference source 159 * (0 -> internal reference, 1 -> external reference) 160 * @adc_freq: ADC Clock speed 161 * (0 -> 1.625 MHz, 1 -> 3.25 MHz, 2 || 3 -> 6.5 MHz) 162 * @ave_ctrl: Sample average control 163 * (0 -> 1 sample, 1 -> 2 samples, 2 -> 4 samples, 3 -> 8 samples) 164 * @touch_det_delay: Touch detect interrupt delay 165 * (0 -> 10 us, 1 -> 50 us, 2 -> 100 us, 3 -> 500 us, 166 * 4-> 1 ms, 5 -> 5 ms, 6 -> 10 ms, 7 -> 50 ms) 167 * recommended is 3 168 * @settling: Panel driver settling time 169 * (0 -> 10 us, 1 -> 100 us, 2 -> 500 us, 3 -> 1 ms, 170 * 4 -> 5 ms, 5 -> 10 ms, 6 for 50 ms, 7 -> 100 ms) 171 * recommended is 2 172 * @fraction_z: Length of the fractional part in z 173 * (fraction_z ([0..7]) = Count of the fractional part) 174 * recommended is 7 175 * @i_drive: current limit value of the touchscreen drivers 176 * (0 -> 20 mA typical 35 mA max, 1 -> 50 mA typical 80 mA max) 177 * 178 * */ 179 struct stmpe_ts_platform_data { 180 u8 sample_time; 181 u8 mod_12b; 182 u8 ref_sel; 183 u8 adc_freq; 184 u8 ave_ctrl; 185 u8 touch_det_delay; 186 u8 settling; 187 u8 fraction_z; 188 u8 i_drive; 189 }; 190 191 /** 192 * struct stmpe_platform_data - STMPE platform data 193 * @id: device id to distinguish between multiple STMPEs on the same board 194 * @blocks: bitmask of blocks to enable (use STMPE_BLOCK_*) 195 * @irq_trigger: IRQ trigger to use for the interrupt to the host 196 * @autosleep: bool to enable/disable stmpe autosleep 197 * @autosleep_timeout: inactivity timeout in milliseconds for autosleep 198 * @irq_base: base IRQ number. %STMPE_NR_IRQS irqs will be used, or 199 * %STMPE_NR_INTERNAL_IRQS if the GPIO driver is not used. 200 * @irq_over_gpio: true if gpio is used to get irq 201 * @irq_gpio: gpio number over which irq will be requested (significant only if 202 * irq_over_gpio is true) 203 * @gpio: GPIO-specific platform data 204 * @keypad: keypad-specific platform data 205 * @ts: touchscreen-specific platform data 206 */ 207 struct stmpe_platform_data { 208 int id; 209 unsigned int blocks; 210 int irq_base; 211 unsigned int irq_trigger; 212 bool autosleep; 213 bool irq_over_gpio; 214 int irq_gpio; 215 int autosleep_timeout; 216 217 struct stmpe_gpio_platform_data *gpio; 218 struct stmpe_keypad_platform_data *keypad; 219 struct stmpe_ts_platform_data *ts; 220 }; 221 222 #define STMPE_NR_INTERNAL_IRQS 9 223 #define STMPE_INT_GPIO(x) (STMPE_NR_INTERNAL_IRQS + (x)) 224 225 #define STMPE_NR_GPIOS 24 226 #define STMPE_NR_IRQS STMPE_INT_GPIO(STMPE_NR_GPIOS) 227 228 #endif 229