Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/input/keyboard/omap-keypad.c |
| 3 | * |
| 4 | * OMAP Keypad Driver |
| 5 | * |
| 6 | * Copyright (C) 2003 Nokia Corporation |
Jan Engelhardt | 96de0e2 | 2007-10-19 23:21:04 +0200 | [diff] [blame] | 7 | * Written by Timo Teräs <ext-timo.teras@nokia.com> |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 8 | * |
| 9 | * Added support for H2 & H3 Keypad |
| 10 | * Copyright (C) 2004 Texas Instruments |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or |
| 15 | * (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 25 | */ |
| 26 | |
| 27 | #include <linux/module.h> |
| 28 | #include <linux/init.h> |
| 29 | #include <linux/interrupt.h> |
| 30 | #include <linux/types.h> |
| 31 | #include <linux/input.h> |
| 32 | #include <linux/kernel.h> |
| 33 | #include <linux/delay.h> |
| 34 | #include <linux/platform_device.h> |
| 35 | #include <linux/mutex.h> |
| 36 | #include <linux/errno.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 37 | #include <linux/slab.h> |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 38 | #include <linux/gpio.h> |
| 39 | #include <linux/platform_data/gpio-omap.h> |
Arnd Bergmann | 2203747 | 2012-08-24 15:21:06 +0200 | [diff] [blame] | 40 | #include <linux/platform_data/keypad-omap.h> |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 41 | |
| 42 | #undef NEW_BOARD_LEARNING_MODE |
| 43 | |
| 44 | static void omap_kp_tasklet(unsigned long); |
| 45 | static void omap_kp_timer(unsigned long); |
| 46 | |
| 47 | static unsigned char keypad_state[8]; |
| 48 | static DEFINE_MUTEX(kp_enable_mutex); |
| 49 | static int kp_enable = 1; |
| 50 | static int kp_cur_group = -1; |
| 51 | |
| 52 | struct omap_kp { |
| 53 | struct input_dev *input; |
| 54 | struct timer_list timer; |
| 55 | int irq; |
| 56 | unsigned int rows; |
| 57 | unsigned int cols; |
| 58 | unsigned long delay; |
| 59 | unsigned int debounce; |
Dmitry Torokhov | 1932811 | 2012-05-10 22:37:08 -0700 | [diff] [blame] | 60 | unsigned short keymap[]; |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 61 | }; |
| 62 | |
Russell King | 7c8ad98 | 2008-09-05 15:13:24 +0100 | [diff] [blame] | 63 | static DECLARE_TASKLET_DISABLED(kp_tasklet, omap_kp_tasklet, 0); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 64 | |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 65 | static unsigned int *row_gpios; |
| 66 | static unsigned int *col_gpios; |
| 67 | |
| 68 | #ifdef CONFIG_ARCH_OMAP2 |
| 69 | static void set_col_gpio_val(struct omap_kp *omap_kp, u8 value) |
| 70 | { |
| 71 | int col; |
David Brownell | 93a22f8 | 2008-10-15 22:03:15 -0700 | [diff] [blame] | 72 | |
| 73 | for (col = 0; col < omap_kp->cols; col++) |
| 74 | gpio_set_value(col_gpios[col], value & (1 << col)); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 75 | } |
| 76 | |
| 77 | static u8 get_row_gpio_val(struct omap_kp *omap_kp) |
| 78 | { |
| 79 | int row; |
| 80 | u8 value = 0; |
| 81 | |
| 82 | for (row = 0; row < omap_kp->rows; row++) { |
David Brownell | 93a22f8 | 2008-10-15 22:03:15 -0700 | [diff] [blame] | 83 | if (gpio_get_value(row_gpios[row])) |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 84 | value |= (1 << row); |
| 85 | } |
| 86 | return value; |
| 87 | } |
| 88 | #else |
| 89 | #define set_col_gpio_val(x, y) do {} while (0) |
| 90 | #define get_row_gpio_val(x) 0 |
| 91 | #endif |
| 92 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 93 | static irqreturn_t omap_kp_interrupt(int irq, void *dev_id) |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 94 | { |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 95 | /* disable keyboard interrupt and schedule for handling */ |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 96 | omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 97 | |
| 98 | tasklet_schedule(&kp_tasklet); |
| 99 | |
| 100 | return IRQ_HANDLED; |
| 101 | } |
| 102 | |
| 103 | static void omap_kp_timer(unsigned long data) |
| 104 | { |
| 105 | tasklet_schedule(&kp_tasklet); |
| 106 | } |
| 107 | |
| 108 | static void omap_kp_scan_keypad(struct omap_kp *omap_kp, unsigned char *state) |
| 109 | { |
| 110 | int col = 0; |
| 111 | |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 112 | /* disable keyboard interrupt and schedule for handling */ |
| 113 | omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); |
| 114 | |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 115 | /* read the keypad status */ |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 116 | omap_writew(0xff, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC); |
| 117 | for (col = 0; col < omap_kp->cols; col++) { |
| 118 | omap_writew(~(1 << col) & 0xff, |
| 119 | OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 120 | |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 121 | udelay(omap_kp->delay); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 122 | |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 123 | state[col] = ~omap_readw(OMAP1_MPUIO_BASE + |
| 124 | OMAP_MPUIO_KBR_LATCH) & 0xff; |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 125 | } |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 126 | omap_writew(0x00, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC); |
| 127 | udelay(2); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 128 | } |
| 129 | |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 130 | static void omap_kp_tasklet(unsigned long data) |
| 131 | { |
| 132 | struct omap_kp *omap_kp_data = (struct omap_kp *) data; |
Janusz Krzysztofik | da1f026 | 2010-12-20 21:09:22 +0000 | [diff] [blame] | 133 | unsigned short *keycodes = omap_kp_data->input->keycode; |
| 134 | unsigned int row_shift = get_count_order(omap_kp_data->cols); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 135 | unsigned char new_state[8], changed, key_down = 0; |
| 136 | int col, row; |
| 137 | int spurious = 0; |
| 138 | |
| 139 | /* check for any changes */ |
| 140 | omap_kp_scan_keypad(omap_kp_data, new_state); |
| 141 | |
| 142 | /* check for changes and print those */ |
| 143 | for (col = 0; col < omap_kp_data->cols; col++) { |
| 144 | changed = new_state[col] ^ keypad_state[col]; |
| 145 | key_down |= new_state[col]; |
| 146 | if (changed == 0) |
| 147 | continue; |
| 148 | |
| 149 | for (row = 0; row < omap_kp_data->rows; row++) { |
| 150 | int key; |
| 151 | if (!(changed & (1 << row))) |
| 152 | continue; |
| 153 | #ifdef NEW_BOARD_LEARNING_MODE |
| 154 | printk(KERN_INFO "omap-keypad: key %d-%d %s\n", col, |
| 155 | row, (new_state[col] & (1 << row)) ? |
| 156 | "pressed" : "released"); |
| 157 | #else |
Janusz Krzysztofik | da1f026 | 2010-12-20 21:09:22 +0000 | [diff] [blame] | 158 | key = keycodes[MATRIX_SCAN_CODE(row, col, row_shift)]; |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 159 | if (key < 0) { |
| 160 | printk(KERN_WARNING |
| 161 | "omap-keypad: Spurious key event %d-%d\n", |
| 162 | col, row); |
| 163 | /* We scan again after a couple of seconds */ |
| 164 | spurious = 1; |
| 165 | continue; |
| 166 | } |
| 167 | |
| 168 | if (!(kp_cur_group == (key & GROUP_MASK) || |
| 169 | kp_cur_group == -1)) |
| 170 | continue; |
| 171 | |
| 172 | kp_cur_group = key & GROUP_MASK; |
| 173 | input_report_key(omap_kp_data->input, key & ~GROUP_MASK, |
| 174 | new_state[col] & (1 << row)); |
| 175 | #endif |
| 176 | } |
| 177 | } |
Janusz Krzysztofik | b27af56 | 2011-06-15 21:13:55 -0700 | [diff] [blame] | 178 | input_sync(omap_kp_data->input); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 179 | memcpy(keypad_state, new_state, sizeof(keypad_state)); |
| 180 | |
| 181 | if (key_down) { |
Josh | 9e14f36b | 2012-09-04 23:10:50 -0700 | [diff] [blame] | 182 | int delay = HZ / 20; |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 183 | /* some key is pressed - keep irq disabled and use timer |
| 184 | * to poll the keypad */ |
| 185 | if (spurious) |
| 186 | delay = 2 * HZ; |
| 187 | mod_timer(&omap_kp_data->timer, jiffies + delay); |
| 188 | } else { |
| 189 | /* enable interrupts */ |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 190 | omap_writew(0, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); |
| 191 | kp_cur_group = -1; |
Dmitry Torokhov | 9360353 | 2007-10-12 14:20:00 -0400 | [diff] [blame] | 192 | } |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | static ssize_t omap_kp_enable_show(struct device *dev, |
| 196 | struct device_attribute *attr, char *buf) |
| 197 | { |
| 198 | return sprintf(buf, "%u\n", kp_enable); |
| 199 | } |
| 200 | |
| 201 | static ssize_t omap_kp_enable_store(struct device *dev, struct device_attribute *attr, |
| 202 | const char *buf, size_t count) |
| 203 | { |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 204 | struct omap_kp *omap_kp = dev_get_drvdata(dev); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 205 | int state; |
| 206 | |
| 207 | if (sscanf(buf, "%u", &state) != 1) |
| 208 | return -EINVAL; |
| 209 | |
| 210 | if ((state != 1) && (state != 0)) |
| 211 | return -EINVAL; |
| 212 | |
| 213 | mutex_lock(&kp_enable_mutex); |
| 214 | if (state != kp_enable) { |
| 215 | if (state) |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 216 | enable_irq(omap_kp->irq); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 217 | else |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 218 | disable_irq(omap_kp->irq); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 219 | kp_enable = state; |
| 220 | } |
| 221 | mutex_unlock(&kp_enable_mutex); |
| 222 | |
| 223 | return strnlen(buf, count); |
| 224 | } |
| 225 | |
| 226 | static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, omap_kp_enable_show, omap_kp_enable_store); |
| 227 | |
| 228 | #ifdef CONFIG_PM |
| 229 | static int omap_kp_suspend(struct platform_device *dev, pm_message_t state) |
| 230 | { |
| 231 | /* Nothing yet */ |
| 232 | |
| 233 | return 0; |
| 234 | } |
| 235 | |
| 236 | static int omap_kp_resume(struct platform_device *dev) |
| 237 | { |
| 238 | /* Nothing yet */ |
| 239 | |
| 240 | return 0; |
| 241 | } |
| 242 | #else |
| 243 | #define omap_kp_suspend NULL |
| 244 | #define omap_kp_resume NULL |
| 245 | #endif |
| 246 | |
Uwe Kleine-König | d63dab0 | 2009-01-13 18:20:20 -0800 | [diff] [blame] | 247 | static int __devinit omap_kp_probe(struct platform_device *pdev) |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 248 | { |
| 249 | struct omap_kp *omap_kp; |
| 250 | struct input_dev *input_dev; |
| 251 | struct omap_kp_platform_data *pdata = pdev->dev.platform_data; |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 252 | int i, col_idx, row_idx, ret; |
Janusz Krzysztofik | da1f026 | 2010-12-20 21:09:22 +0000 | [diff] [blame] | 253 | unsigned int row_shift, keycodemax; |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 254 | |
Janusz Krzysztofik | da1f026 | 2010-12-20 21:09:22 +0000 | [diff] [blame] | 255 | if (!pdata->rows || !pdata->cols || !pdata->keymap_data) { |
| 256 | printk(KERN_ERR "No rows, cols or keymap_data from pdata\n"); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 257 | return -EINVAL; |
| 258 | } |
| 259 | |
Janusz Krzysztofik | da1f026 | 2010-12-20 21:09:22 +0000 | [diff] [blame] | 260 | row_shift = get_count_order(pdata->cols); |
| 261 | keycodemax = pdata->rows << row_shift; |
| 262 | |
| 263 | omap_kp = kzalloc(sizeof(struct omap_kp) + |
| 264 | keycodemax * sizeof(unsigned short), GFP_KERNEL); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 265 | input_dev = input_allocate_device(); |
| 266 | if (!omap_kp || !input_dev) { |
| 267 | kfree(omap_kp); |
| 268 | input_free_device(input_dev); |
| 269 | return -ENOMEM; |
| 270 | } |
| 271 | |
| 272 | platform_set_drvdata(pdev, omap_kp); |
| 273 | |
| 274 | omap_kp->input = input_dev; |
| 275 | |
| 276 | /* Disable the interrupt for the MPUIO keyboard */ |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 277 | omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 278 | |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 279 | if (pdata->delay) |
| 280 | omap_kp->delay = pdata->delay; |
| 281 | |
| 282 | if (pdata->row_gpios && pdata->col_gpios) { |
| 283 | row_gpios = pdata->row_gpios; |
| 284 | col_gpios = pdata->col_gpios; |
| 285 | } |
| 286 | |
| 287 | omap_kp->rows = pdata->rows; |
| 288 | omap_kp->cols = pdata->cols; |
| 289 | |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 290 | col_idx = 0; |
| 291 | row_idx = 0; |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 292 | |
| 293 | setup_timer(&omap_kp->timer, omap_kp_timer, (unsigned long)omap_kp); |
| 294 | |
| 295 | /* get the irq and init timer*/ |
| 296 | tasklet_enable(&kp_tasklet); |
| 297 | kp_tasklet.data = (unsigned long) omap_kp; |
| 298 | |
| 299 | ret = device_create_file(&pdev->dev, &dev_attr_enable); |
| 300 | if (ret < 0) |
| 301 | goto err2; |
| 302 | |
| 303 | /* setup input device */ |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 304 | input_dev->name = "omap-keypad"; |
| 305 | input_dev->phys = "omap-keypad/input0"; |
Dmitry Torokhov | 469ba4d | 2007-04-12 01:34:58 -0400 | [diff] [blame] | 306 | input_dev->dev.parent = &pdev->dev; |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 307 | |
| 308 | input_dev->id.bustype = BUS_HOST; |
| 309 | input_dev->id.vendor = 0x0001; |
| 310 | input_dev->id.product = 0x0001; |
| 311 | input_dev->id.version = 0x0100; |
| 312 | |
Dmitry Torokhov | 1932811 | 2012-05-10 22:37:08 -0700 | [diff] [blame] | 313 | if (pdata->rep) |
| 314 | __set_bit(EV_REP, input_dev->evbit); |
| 315 | |
| 316 | ret = matrix_keypad_build_keymap(pdata->keymap_data, NULL, |
| 317 | pdata->rows, pdata->cols, |
| 318 | omap_kp->keymap, input_dev); |
| 319 | if (ret < 0) |
| 320 | goto err3; |
| 321 | |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 322 | ret = input_register_device(omap_kp->input); |
| 323 | if (ret < 0) { |
| 324 | printk(KERN_ERR "Unable to register omap-keypad input device\n"); |
| 325 | goto err3; |
| 326 | } |
| 327 | |
| 328 | if (pdata->dbounce) |
Tony Lindgren | 6175556 | 2009-08-28 10:50:34 -0700 | [diff] [blame] | 329 | omap_writew(0xff, OMAP1_MPUIO_BASE + OMAP_MPUIO_GPIO_DEBOUNCING); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 330 | |
| 331 | /* scan current status and enable interrupt */ |
| 332 | omap_kp_scan_keypad(omap_kp, keypad_state); |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 333 | omap_kp->irq = platform_get_irq(pdev, 0); |
| 334 | if (omap_kp->irq >= 0) { |
| 335 | if (request_irq(omap_kp->irq, omap_kp_interrupt, 0, |
| 336 | "omap-keypad", omap_kp) < 0) |
| 337 | goto err4; |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 338 | } |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 339 | omap_writew(0, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); |
| 340 | |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 341 | return 0; |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 342 | |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 343 | err4: |
| 344 | input_unregister_device(omap_kp->input); |
| 345 | input_dev = NULL; |
| 346 | err3: |
| 347 | device_remove_file(&pdev->dev, &dev_attr_enable); |
| 348 | err2: |
Josh | 9e14f36b | 2012-09-04 23:10:50 -0700 | [diff] [blame] | 349 | for (i = row_idx - 1; i >= 0; i--) |
David Brownell | 93a22f8 | 2008-10-15 22:03:15 -0700 | [diff] [blame] | 350 | gpio_free(row_gpios[i]); |
Josh | 9e14f36b | 2012-09-04 23:10:50 -0700 | [diff] [blame] | 351 | for (i = col_idx - 1; i >= 0; i--) |
David Brownell | 93a22f8 | 2008-10-15 22:03:15 -0700 | [diff] [blame] | 352 | gpio_free(col_gpios[i]); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 353 | |
| 354 | kfree(omap_kp); |
| 355 | input_free_device(input_dev); |
| 356 | |
| 357 | return -EINVAL; |
| 358 | } |
| 359 | |
Uwe Kleine-König | d63dab0 | 2009-01-13 18:20:20 -0800 | [diff] [blame] | 360 | static int __devexit omap_kp_remove(struct platform_device *pdev) |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 361 | { |
| 362 | struct omap_kp *omap_kp = platform_get_drvdata(pdev); |
| 363 | |
| 364 | /* disable keypad interrupt handling */ |
| 365 | tasklet_disable(&kp_tasklet); |
Tony Lindgren | f799a3d | 2012-09-07 13:27:58 -0700 | [diff] [blame] | 366 | omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); |
| 367 | free_irq(omap_kp->irq, omap_kp); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 368 | |
| 369 | del_timer_sync(&omap_kp->timer); |
| 370 | tasklet_kill(&kp_tasklet); |
| 371 | |
| 372 | /* unregister everything */ |
| 373 | input_unregister_device(omap_kp->input); |
| 374 | |
| 375 | kfree(omap_kp); |
| 376 | |
| 377 | return 0; |
| 378 | } |
| 379 | |
| 380 | static struct platform_driver omap_kp_driver = { |
| 381 | .probe = omap_kp_probe, |
Bill Pemberton | 1cb0aa8 | 2012-11-23 21:27:39 -0800 | [diff] [blame^] | 382 | .remove = omap_kp_remove, |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 383 | .suspend = omap_kp_suspend, |
| 384 | .resume = omap_kp_resume, |
| 385 | .driver = { |
| 386 | .name = "omap-keypad", |
Kay Sievers | d7b5247 | 2008-04-18 00:24:42 -0400 | [diff] [blame] | 387 | .owner = THIS_MODULE, |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 388 | }, |
| 389 | }; |
JJ Ding | 5146c84 | 2011-11-29 11:08:39 -0800 | [diff] [blame] | 390 | module_platform_driver(omap_kp_driver); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 391 | |
Jan Engelhardt | 96de0e2 | 2007-10-19 23:21:04 +0200 | [diff] [blame] | 392 | MODULE_AUTHOR("Timo Teräs"); |
Komal Shah | ad4e09b | 2006-09-29 01:59:19 -0700 | [diff] [blame] | 393 | MODULE_DESCRIPTION("OMAP Keypad Driver"); |
| 394 | MODULE_LICENSE("GPL"); |
Kay Sievers | d7b5247 | 2008-04-18 00:24:42 -0400 | [diff] [blame] | 395 | MODULE_ALIAS("platform:omap-keypad"); |