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