Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Keyboard driver for Sharp Spitz, Borzoi and Akita (SL-Cxx00 series) |
| 3 | * |
| 4 | * Copyright (c) 2005 Richard Purdie |
| 5 | * |
| 6 | * Based on corgikbd.c |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #include <linux/delay.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 15 | #include <linux/platform_device.h> |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 16 | #include <linux/init.h> |
| 17 | #include <linux/input.h> |
| 18 | #include <linux/interrupt.h> |
| 19 | #include <linux/jiffies.h> |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/slab.h> |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 22 | |
| 23 | #include <asm/arch/spitz.h> |
| 24 | #include <asm/arch/hardware.h> |
| 25 | #include <asm/arch/pxa-regs.h> |
| 26 | |
| 27 | #define KB_ROWS 7 |
| 28 | #define KB_COLS 11 |
| 29 | #define KB_ROWMASK(r) (1 << (r)) |
| 30 | #define SCANCODE(r,c) (((r)<<4) + (c) + 1) |
| 31 | #define NR_SCANCODES ((KB_ROWS<<4) + 1) |
| 32 | |
| 33 | #define HINGE_SCAN_INTERVAL (150) /* ms */ |
| 34 | |
| 35 | #define SPITZ_KEY_CALENDER KEY_F1 |
| 36 | #define SPITZ_KEY_ADDRESS KEY_F2 |
| 37 | #define SPITZ_KEY_FN KEY_F3 |
| 38 | #define SPITZ_KEY_CANCEL KEY_F4 |
| 39 | #define SPITZ_KEY_EXOK KEY_F5 |
| 40 | #define SPITZ_KEY_EXCANCEL KEY_F6 |
| 41 | #define SPITZ_KEY_EXJOGDOWN KEY_F7 |
| 42 | #define SPITZ_KEY_EXJOGUP KEY_F8 |
| 43 | #define SPITZ_KEY_JAP1 KEY_LEFTALT |
| 44 | #define SPITZ_KEY_JAP2 KEY_RIGHTCTRL |
| 45 | #define SPITZ_KEY_SYNC KEY_F9 |
| 46 | #define SPITZ_KEY_MAIL KEY_F10 |
| 47 | #define SPITZ_KEY_OK KEY_F11 |
| 48 | #define SPITZ_KEY_MENU KEY_F12 |
| 49 | |
| 50 | static unsigned char spitzkbd_keycode[NR_SCANCODES] = { |
| 51 | 0, /* 0 */ |
| 52 | KEY_LEFTCTRL, KEY_1, KEY_3, KEY_5, KEY_6, KEY_7, KEY_9, KEY_0, KEY_BACKSPACE, SPITZ_KEY_EXOK, SPITZ_KEY_EXCANCEL, 0, 0, 0, 0, 0, /* 1-16 */ |
| 53 | 0, KEY_2, KEY_4, KEY_R, KEY_Y, KEY_8, KEY_I, KEY_O, KEY_P, SPITZ_KEY_EXJOGDOWN, SPITZ_KEY_EXJOGUP, 0, 0, 0, 0, 0, /* 17-32 */ |
| 54 | KEY_TAB, KEY_Q, KEY_E, KEY_T, KEY_G, KEY_U, KEY_J, KEY_K, 0, 0, 0, 0, 0, 0, 0, 0, /* 33-48 */ |
Richard Purdie | 4148949 | 2005-10-14 16:07:28 +0100 | [diff] [blame] | 55 | SPITZ_KEY_CALENDER, KEY_W, KEY_S, KEY_F, KEY_V, KEY_H, KEY_M, KEY_L, 0, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0, 0, /* 49-64 */ |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 56 | SPITZ_KEY_ADDRESS, KEY_A, KEY_D, KEY_C, KEY_B, KEY_N, KEY_DOT, 0, KEY_ENTER, KEY_LEFTSHIFT, 0, 0, 0, 0, 0, 0, /* 65-80 */ |
| 57 | SPITZ_KEY_MAIL, KEY_Z, KEY_X, KEY_MINUS, KEY_SPACE, KEY_COMMA, 0, KEY_UP, 0, 0, SPITZ_KEY_FN, 0, 0, 0, 0, 0, /* 81-96 */ |
| 58 | KEY_SYSRQ, SPITZ_KEY_JAP1, SPITZ_KEY_JAP2, SPITZ_KEY_CANCEL, SPITZ_KEY_OK, SPITZ_KEY_MENU, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0, 0, 0, 0 /* 97-112 */ |
| 59 | }; |
| 60 | |
| 61 | static int spitz_strobes[] = { |
| 62 | SPITZ_GPIO_KEY_STROBE0, |
| 63 | SPITZ_GPIO_KEY_STROBE1, |
| 64 | SPITZ_GPIO_KEY_STROBE2, |
| 65 | SPITZ_GPIO_KEY_STROBE3, |
| 66 | SPITZ_GPIO_KEY_STROBE4, |
| 67 | SPITZ_GPIO_KEY_STROBE5, |
| 68 | SPITZ_GPIO_KEY_STROBE6, |
| 69 | SPITZ_GPIO_KEY_STROBE7, |
| 70 | SPITZ_GPIO_KEY_STROBE8, |
| 71 | SPITZ_GPIO_KEY_STROBE9, |
| 72 | SPITZ_GPIO_KEY_STROBE10, |
| 73 | }; |
| 74 | |
| 75 | static int spitz_senses[] = { |
| 76 | SPITZ_GPIO_KEY_SENSE0, |
| 77 | SPITZ_GPIO_KEY_SENSE1, |
| 78 | SPITZ_GPIO_KEY_SENSE2, |
| 79 | SPITZ_GPIO_KEY_SENSE3, |
| 80 | SPITZ_GPIO_KEY_SENSE4, |
| 81 | SPITZ_GPIO_KEY_SENSE5, |
| 82 | SPITZ_GPIO_KEY_SENSE6, |
| 83 | }; |
| 84 | |
| 85 | struct spitzkbd { |
| 86 | unsigned char keycode[ARRAY_SIZE(spitzkbd_keycode)]; |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 87 | struct input_dev *input; |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 88 | char phys[32]; |
| 89 | |
| 90 | spinlock_t lock; |
| 91 | struct timer_list timer; |
| 92 | struct timer_list htimer; |
| 93 | |
| 94 | unsigned int suspended; |
| 95 | unsigned long suspend_jiffies; |
| 96 | }; |
| 97 | |
| 98 | #define KB_DISCHARGE_DELAY 10 |
| 99 | #define KB_ACTIVATE_DELAY 10 |
| 100 | |
| 101 | /* Helper functions for reading the keyboard matrix |
| 102 | * Note: We should really be using pxa_gpio_mode to alter GPDR but it |
| 103 | * requires a function call per GPIO bit which is excessive |
| 104 | * when we need to access 11 bits at once, multiple times. |
| 105 | * These functions must be called within local_irq_save()/local_irq_restore() |
| 106 | * or similar. |
| 107 | */ |
| 108 | static inline void spitzkbd_discharge_all(void) |
| 109 | { |
| 110 | /* STROBE All HiZ */ |
| 111 | GPCR0 = SPITZ_GPIO_G0_STROBE_BIT; |
| 112 | GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; |
| 113 | GPCR1 = SPITZ_GPIO_G1_STROBE_BIT; |
| 114 | GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; |
| 115 | GPCR2 = SPITZ_GPIO_G2_STROBE_BIT; |
| 116 | GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; |
| 117 | GPCR3 = SPITZ_GPIO_G3_STROBE_BIT; |
| 118 | GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; |
| 119 | } |
| 120 | |
| 121 | static inline void spitzkbd_activate_all(void) |
| 122 | { |
| 123 | /* STROBE ALL -> High */ |
| 124 | GPSR0 = SPITZ_GPIO_G0_STROBE_BIT; |
| 125 | GPDR0 |= SPITZ_GPIO_G0_STROBE_BIT; |
| 126 | GPSR1 = SPITZ_GPIO_G1_STROBE_BIT; |
| 127 | GPDR1 |= SPITZ_GPIO_G1_STROBE_BIT; |
| 128 | GPSR2 = SPITZ_GPIO_G2_STROBE_BIT; |
| 129 | GPDR2 |= SPITZ_GPIO_G2_STROBE_BIT; |
| 130 | GPSR3 = SPITZ_GPIO_G3_STROBE_BIT; |
| 131 | GPDR3 |= SPITZ_GPIO_G3_STROBE_BIT; |
| 132 | |
| 133 | udelay(KB_DISCHARGE_DELAY); |
| 134 | |
| 135 | /* Clear any interrupts we may have triggered when altering the GPIO lines */ |
| 136 | GEDR0 = SPITZ_GPIO_G0_SENSE_BIT; |
| 137 | GEDR1 = SPITZ_GPIO_G1_SENSE_BIT; |
| 138 | GEDR2 = SPITZ_GPIO_G2_SENSE_BIT; |
| 139 | GEDR3 = SPITZ_GPIO_G3_SENSE_BIT; |
| 140 | } |
| 141 | |
| 142 | static inline void spitzkbd_activate_col(int col) |
| 143 | { |
| 144 | int gpio = spitz_strobes[col]; |
| 145 | GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; |
| 146 | GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; |
| 147 | GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; |
| 148 | GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; |
| 149 | GPSR(gpio) = GPIO_bit(gpio); |
| 150 | GPDR(gpio) |= GPIO_bit(gpio); |
| 151 | } |
| 152 | |
| 153 | static inline void spitzkbd_reset_col(int col) |
| 154 | { |
| 155 | int gpio = spitz_strobes[col]; |
| 156 | GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; |
| 157 | GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; |
| 158 | GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; |
| 159 | GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; |
| 160 | GPCR(gpio) = GPIO_bit(gpio); |
| 161 | GPDR(gpio) |= GPIO_bit(gpio); |
| 162 | } |
| 163 | |
| 164 | static inline int spitzkbd_get_row_status(int col) |
| 165 | { |
| 166 | return ((GPLR0 >> 12) & 0x01) | ((GPLR0 >> 16) & 0x02) |
| 167 | | ((GPLR2 >> 25) & 0x04) | ((GPLR1 << 1) & 0x08) |
| 168 | | ((GPLR1 >> 0) & 0x10) | ((GPLR1 >> 1) & 0x60); |
| 169 | } |
| 170 | |
| 171 | /* |
| 172 | * The spitz keyboard only generates interrupts when a key is pressed. |
| 173 | * When a key is pressed, we enable a timer which then scans the |
| 174 | * keyboard to detect when the key is released. |
| 175 | */ |
| 176 | |
| 177 | /* Scan the hardware keyboard and push any changes up through the input layer */ |
| 178 | static void spitzkbd_scankeyboard(struct spitzkbd *spitzkbd_data, struct pt_regs *regs) |
| 179 | { |
| 180 | unsigned int row, col, rowd; |
| 181 | unsigned long flags; |
| 182 | unsigned int num_pressed, pwrkey = ((GPLR(SPITZ_GPIO_ON_KEY) & GPIO_bit(SPITZ_GPIO_ON_KEY)) != 0); |
| 183 | |
| 184 | if (spitzkbd_data->suspended) |
| 185 | return; |
| 186 | |
| 187 | spin_lock_irqsave(&spitzkbd_data->lock, flags); |
| 188 | |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 189 | input_regs(spitzkbd_data->input, regs); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 190 | |
| 191 | num_pressed = 0; |
| 192 | for (col = 0; col < KB_COLS; col++) { |
| 193 | /* |
| 194 | * Discharge the output driver capacitatance |
| 195 | * in the keyboard matrix. (Yes it is significant..) |
| 196 | */ |
| 197 | |
| 198 | spitzkbd_discharge_all(); |
| 199 | udelay(KB_DISCHARGE_DELAY); |
| 200 | |
| 201 | spitzkbd_activate_col(col); |
| 202 | udelay(KB_ACTIVATE_DELAY); |
| 203 | |
| 204 | rowd = spitzkbd_get_row_status(col); |
| 205 | for (row = 0; row < KB_ROWS; row++) { |
| 206 | unsigned int scancode, pressed; |
| 207 | |
| 208 | scancode = SCANCODE(row, col); |
| 209 | pressed = rowd & KB_ROWMASK(row); |
| 210 | |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 211 | input_report_key(spitzkbd_data->input, spitzkbd_data->keycode[scancode], pressed); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 212 | |
| 213 | if (pressed) |
| 214 | num_pressed++; |
| 215 | } |
| 216 | spitzkbd_reset_col(col); |
| 217 | } |
| 218 | |
| 219 | spitzkbd_activate_all(); |
| 220 | |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 221 | input_report_key(spitzkbd_data->input, SPITZ_KEY_SYNC, (GPLR(SPITZ_GPIO_SYNC) & GPIO_bit(SPITZ_GPIO_SYNC)) != 0 ); |
| 222 | input_report_key(spitzkbd_data->input, KEY_SUSPEND, pwrkey); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 223 | |
| 224 | if (pwrkey && time_after(jiffies, spitzkbd_data->suspend_jiffies + msecs_to_jiffies(1000))) { |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 225 | input_event(spitzkbd_data->input, EV_PWR, KEY_SUSPEND, 1); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 226 | spitzkbd_data->suspend_jiffies = jiffies; |
| 227 | } |
| 228 | |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 229 | input_sync(spitzkbd_data->input); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 230 | |
| 231 | /* if any keys are pressed, enable the timer */ |
| 232 | if (num_pressed) |
| 233 | mod_timer(&spitzkbd_data->timer, jiffies + msecs_to_jiffies(100)); |
| 234 | |
| 235 | spin_unlock_irqrestore(&spitzkbd_data->lock, flags); |
| 236 | } |
| 237 | |
| 238 | /* |
| 239 | * spitz keyboard interrupt handler. |
| 240 | */ |
| 241 | static irqreturn_t spitzkbd_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
| 242 | { |
| 243 | struct spitzkbd *spitzkbd_data = dev_id; |
| 244 | |
| 245 | if (!timer_pending(&spitzkbd_data->timer)) { |
| 246 | /** wait chattering delay **/ |
| 247 | udelay(20); |
| 248 | spitzkbd_scankeyboard(spitzkbd_data, regs); |
| 249 | } |
| 250 | |
| 251 | return IRQ_HANDLED; |
| 252 | } |
| 253 | |
| 254 | /* |
| 255 | * spitz timer checking for released keys |
| 256 | */ |
| 257 | static void spitzkbd_timer_callback(unsigned long data) |
| 258 | { |
| 259 | struct spitzkbd *spitzkbd_data = (struct spitzkbd *) data; |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 260 | |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 261 | spitzkbd_scankeyboard(spitzkbd_data, NULL); |
| 262 | } |
| 263 | |
| 264 | /* |
| 265 | * The hinge switches generate an interrupt. |
| 266 | * We debounce the switches and pass them to the input system. |
| 267 | */ |
| 268 | |
| 269 | static irqreturn_t spitzkbd_hinge_isr(int irq, void *dev_id, struct pt_regs *regs) |
| 270 | { |
| 271 | struct spitzkbd *spitzkbd_data = dev_id; |
| 272 | |
| 273 | if (!timer_pending(&spitzkbd_data->htimer)) |
| 274 | mod_timer(&spitzkbd_data->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL)); |
| 275 | |
| 276 | return IRQ_HANDLED; |
| 277 | } |
| 278 | |
| 279 | #define HINGE_STABLE_COUNT 2 |
| 280 | static int sharpsl_hinge_state; |
| 281 | static int hinge_count; |
| 282 | |
| 283 | static void spitzkbd_hinge_timer(unsigned long data) |
| 284 | { |
| 285 | struct spitzkbd *spitzkbd_data = (struct spitzkbd *) data; |
| 286 | unsigned long state; |
| 287 | unsigned long flags; |
| 288 | |
| 289 | state = GPLR(SPITZ_GPIO_SWA) & (GPIO_bit(SPITZ_GPIO_SWA)|GPIO_bit(SPITZ_GPIO_SWB)); |
| 290 | if (state != sharpsl_hinge_state) { |
| 291 | hinge_count = 0; |
| 292 | sharpsl_hinge_state = state; |
| 293 | } else if (hinge_count < HINGE_STABLE_COUNT) { |
| 294 | hinge_count++; |
| 295 | } |
| 296 | |
| 297 | if (hinge_count >= HINGE_STABLE_COUNT) { |
| 298 | spin_lock_irqsave(&spitzkbd_data->lock, flags); |
| 299 | |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 300 | input_report_switch(spitzkbd_data->input, SW_0, ((GPLR(SPITZ_GPIO_SWA) & GPIO_bit(SPITZ_GPIO_SWA)) != 0)); |
| 301 | input_report_switch(spitzkbd_data->input, SW_1, ((GPLR(SPITZ_GPIO_SWB) & GPIO_bit(SPITZ_GPIO_SWB)) != 0)); |
| 302 | input_sync(spitzkbd_data->input); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 303 | |
| 304 | spin_unlock_irqrestore(&spitzkbd_data->lock, flags); |
| 305 | } else { |
| 306 | mod_timer(&spitzkbd_data->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL)); |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | #ifdef CONFIG_PM |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 311 | static int spitzkbd_suspend(struct platform_device *dev, pm_message_t state) |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 312 | { |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 313 | int i; |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 314 | struct spitzkbd *spitzkbd = platform_get_drvdata(dev); |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 315 | spitzkbd->suspended = 1; |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 316 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 317 | /* Set Strobe lines as inputs - *except* strobe line 0 leave this |
| 318 | enabled so we can detect a power button press for resume */ |
| 319 | for (i = 1; i < SPITZ_KEY_STROBE_NUM; i++) |
| 320 | pxa_gpio_mode(spitz_strobes[i] | GPIO_IN); |
| 321 | |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 322 | return 0; |
| 323 | } |
| 324 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 325 | static int spitzkbd_resume(struct platform_device *dev) |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 326 | { |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 327 | int i; |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 328 | struct spitzkbd *spitzkbd = platform_get_drvdata(dev); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 329 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 330 | for (i = 0; i < SPITZ_KEY_STROBE_NUM; i++) |
| 331 | pxa_gpio_mode(spitz_strobes[i] | GPIO_OUT | GPIO_DFLT_HIGH); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 332 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 333 | /* Upon resume, ignore the suspend key for a short while */ |
| 334 | spitzkbd->suspend_jiffies = jiffies; |
| 335 | spitzkbd->suspended = 0; |
| 336 | |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 337 | return 0; |
| 338 | } |
| 339 | #else |
| 340 | #define spitzkbd_suspend NULL |
| 341 | #define spitzkbd_resume NULL |
| 342 | #endif |
| 343 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 344 | static int __init spitzkbd_probe(struct platform_device *dev) |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 345 | { |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 346 | struct spitzkbd *spitzkbd; |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 347 | struct input_dev *input_dev; |
| 348 | int i; |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 349 | |
| 350 | spitzkbd = kzalloc(sizeof(struct spitzkbd), GFP_KERNEL); |
| 351 | if (!spitzkbd) |
| 352 | return -ENOMEM; |
| 353 | |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 354 | input_dev = input_allocate_device(); |
| 355 | if (!input_dev) { |
| 356 | kfree(spitzkbd); |
| 357 | return -ENOMEM; |
| 358 | } |
| 359 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 360 | platform_set_drvdata(dev, spitzkbd); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 361 | strcpy(spitzkbd->phys, "spitzkbd/input0"); |
| 362 | |
| 363 | spin_lock_init(&spitzkbd->lock); |
| 364 | |
| 365 | /* Init Keyboard rescan timer */ |
| 366 | init_timer(&spitzkbd->timer); |
| 367 | spitzkbd->timer.function = spitzkbd_timer_callback; |
| 368 | spitzkbd->timer.data = (unsigned long) spitzkbd; |
| 369 | |
| 370 | /* Init Hinge Timer */ |
| 371 | init_timer(&spitzkbd->htimer); |
| 372 | spitzkbd->htimer.function = spitzkbd_hinge_timer; |
| 373 | spitzkbd->htimer.data = (unsigned long) spitzkbd; |
| 374 | |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 375 | spitzkbd->suspend_jiffies = jiffies; |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 376 | |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 377 | spitzkbd->input = input_dev; |
| 378 | |
| 379 | input_dev->private = spitzkbd; |
| 380 | input_dev->name = "Spitz Keyboard"; |
| 381 | input_dev->phys = spitzkbd->phys; |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 382 | input_dev->cdev.dev = &dev->dev; |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 383 | |
| 384 | input_dev->id.bustype = BUS_HOST; |
| 385 | input_dev->id.vendor = 0x0001; |
| 386 | input_dev->id.product = 0x0001; |
| 387 | input_dev->id.version = 0x0100; |
| 388 | |
| 389 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_PWR) | BIT(EV_SW); |
| 390 | input_dev->keycode = spitzkbd->keycode; |
| 391 | input_dev->keycodesize = sizeof(unsigned char); |
| 392 | input_dev->keycodemax = ARRAY_SIZE(spitzkbd_keycode); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 393 | |
| 394 | memcpy(spitzkbd->keycode, spitzkbd_keycode, sizeof(spitzkbd->keycode)); |
| 395 | for (i = 0; i < ARRAY_SIZE(spitzkbd_keycode); i++) |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 396 | set_bit(spitzkbd->keycode[i], input_dev->keybit); |
| 397 | clear_bit(0, input_dev->keybit); |
| 398 | set_bit(SW_0, input_dev->swbit); |
| 399 | set_bit(SW_1, input_dev->swbit); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 400 | |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 401 | input_register_device(input_dev); |
| 402 | |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 403 | mod_timer(&spitzkbd->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL)); |
| 404 | |
| 405 | /* Setup sense interrupts - RisingEdge Detect, sense lines as inputs */ |
| 406 | for (i = 0; i < SPITZ_KEY_SENSE_NUM; i++) { |
| 407 | pxa_gpio_mode(spitz_senses[i] | GPIO_IN); |
| 408 | if (request_irq(IRQ_GPIO(spitz_senses[i]), spitzkbd_interrupt, |
Russell King | 9ded96f | 2006-01-08 01:02:07 -0800 | [diff] [blame^] | 409 | SA_INTERRUPT|SA_TRIGGER_RISING, |
| 410 | "Spitzkbd Sense", spitzkbd)) |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 411 | printk(KERN_WARNING "spitzkbd: Can't get Sense IRQ: %d!\n", i); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | /* Set Strobe lines as outputs - set high */ |
| 415 | for (i = 0; i < SPITZ_KEY_STROBE_NUM; i++) |
| 416 | pxa_gpio_mode(spitz_strobes[i] | GPIO_OUT | GPIO_DFLT_HIGH); |
| 417 | |
| 418 | pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN); |
| 419 | pxa_gpio_mode(SPITZ_GPIO_ON_KEY | GPIO_IN); |
| 420 | pxa_gpio_mode(SPITZ_GPIO_SWA | GPIO_IN); |
| 421 | pxa_gpio_mode(SPITZ_GPIO_SWB | GPIO_IN); |
| 422 | |
Russell King | 9ded96f | 2006-01-08 01:02:07 -0800 | [diff] [blame^] | 423 | request_irq(SPITZ_IRQ_GPIO_SYNC, spitzkbd_interrupt, |
| 424 | SA_INTERRUPT | SA_TRIGGER_RISING | SA_TRIGGER_FALLING, |
| 425 | "Spitzkbd Sync", spitzkbd); |
| 426 | request_irq(SPITZ_IRQ_GPIO_ON_KEY, spitzkbd_interrupt, |
| 427 | SA_INTERRUPT | SA_TRIGGER_RISING | SA_TRIGGER_FALLING, |
| 428 | "Spitzkbd PwrOn", spitzkbd); |
| 429 | request_irq(SPITZ_IRQ_GPIO_SWA, spitzkbd_hinge_isr, |
| 430 | SA_INTERRUPT | SA_TRIGGER_RISING | SA_TRIGGER_FALLING, |
| 431 | "Spitzkbd SWA", spitzkbd); |
| 432 | request_irq(SPITZ_IRQ_GPIO_SWB, spitzkbd_hinge_isr, |
| 433 | SA_INTERRUPT | SA_TRIGGER_RISING | SA_TRIGGER_FALLING, |
| 434 | "Spitzkbd SWB", spitzkbd); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 435 | |
| 436 | printk(KERN_INFO "input: Spitz Keyboard Registered\n"); |
| 437 | |
| 438 | return 0; |
| 439 | } |
| 440 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 441 | static int spitzkbd_remove(struct platform_device *dev) |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 442 | { |
| 443 | int i; |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 444 | struct spitzkbd *spitzkbd = platform_get_drvdata(dev); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 445 | |
| 446 | for (i = 0; i < SPITZ_KEY_SENSE_NUM; i++) |
| 447 | free_irq(IRQ_GPIO(spitz_senses[i]), spitzkbd); |
| 448 | |
| 449 | free_irq(SPITZ_IRQ_GPIO_SYNC, spitzkbd); |
| 450 | free_irq(SPITZ_IRQ_GPIO_ON_KEY, spitzkbd); |
| 451 | free_irq(SPITZ_IRQ_GPIO_SWA, spitzkbd); |
| 452 | free_irq(SPITZ_IRQ_GPIO_SWB, spitzkbd); |
| 453 | |
| 454 | del_timer_sync(&spitzkbd->htimer); |
| 455 | del_timer_sync(&spitzkbd->timer); |
| 456 | |
Dmitry Torokhov | 3c42f0c | 2005-09-15 02:01:45 -0500 | [diff] [blame] | 457 | input_unregister_device(spitzkbd->input); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 458 | |
| 459 | kfree(spitzkbd); |
| 460 | |
| 461 | return 0; |
| 462 | } |
| 463 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 464 | static struct platform_driver spitzkbd_driver = { |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 465 | .probe = spitzkbd_probe, |
| 466 | .remove = spitzkbd_remove, |
| 467 | .suspend = spitzkbd_suspend, |
| 468 | .resume = spitzkbd_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 469 | .driver = { |
| 470 | .name = "spitz-keyboard", |
| 471 | }, |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 472 | }; |
| 473 | |
| 474 | static int __devinit spitzkbd_init(void) |
| 475 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 476 | return platform_driver_register(&spitzkbd_driver); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 477 | } |
| 478 | |
| 479 | static void __exit spitzkbd_exit(void) |
| 480 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 481 | platform_driver_unregister(&spitzkbd_driver); |
Richard Purdie | fff7131 | 2005-09-13 01:25:35 -0700 | [diff] [blame] | 482 | } |
| 483 | |
| 484 | module_init(spitzkbd_init); |
| 485 | module_exit(spitzkbd_exit); |
| 486 | |
| 487 | MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>"); |
| 488 | MODULE_DESCRIPTION("Spitz Keyboard Driver"); |
| 489 | MODULE_LICENSE("GPLv2"); |