blob: b052afec9a11f0d323eb735dee3d262eabf116a2 [file] [log] [blame]
Abraham Arcea17f79552010-08-31 17:05:27 -07001/*
2 * OMAP4 Keypad Driver
3 *
4 * Copyright (C) 2010 Texas Instruments
5 *
6 * Author: Abraham Arce <x0066660@ti.com>
7 * Initial Code: Syed Rafiuddin <rafiuddin.syed@ti.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24#include <linux/module.h>
Abraham Arcea17f79552010-08-31 17:05:27 -070025#include <linux/interrupt.h>
26#include <linux/platform_device.h>
27#include <linux/errno.h>
28#include <linux/io.h>
Sourav Poddar13987432012-07-13 00:10:47 -070029#include <linux/of.h>
Abraham Arcea17f79552010-08-31 17:05:27 -070030#include <linux/input.h>
Joachim Eastwood61721c82014-05-29 00:30:02 -070031#include <linux/input/matrix_keypad.h>
Abraham Arcea17f79552010-08-31 17:05:27 -070032#include <linux/slab.h>
Abraham Arce5ad567f2011-02-22 22:25:59 -080033#include <linux/pm_runtime.h>
Abraham Arcea17f79552010-08-31 17:05:27 -070034
Abraham Arcea17f79552010-08-31 17:05:27 -070035/* OMAP4 registers */
36#define OMAP4_KBD_REVISION 0x00
37#define OMAP4_KBD_SYSCONFIG 0x10
38#define OMAP4_KBD_SYSSTATUS 0x14
39#define OMAP4_KBD_IRQSTATUS 0x18
40#define OMAP4_KBD_IRQENABLE 0x1C
41#define OMAP4_KBD_WAKEUPENABLE 0x20
42#define OMAP4_KBD_PENDING 0x24
43#define OMAP4_KBD_CTRL 0x28
44#define OMAP4_KBD_DEBOUNCINGTIME 0x2C
45#define OMAP4_KBD_LONGKEYTIME 0x30
46#define OMAP4_KBD_TIMEOUT 0x34
47#define OMAP4_KBD_STATEMACHINE 0x38
48#define OMAP4_KBD_ROWINPUTS 0x3C
49#define OMAP4_KBD_COLUMNOUTPUTS 0x40
50#define OMAP4_KBD_FULLCODE31_0 0x44
51#define OMAP4_KBD_FULLCODE63_32 0x48
52
53/* OMAP4 bit definitions */
Illia Smyrnov875ad692013-08-25 23:25:18 -070054#define OMAP4_DEF_IRQENABLE_EVENTEN BIT(0)
55#define OMAP4_DEF_IRQENABLE_LONGKEY BIT(1)
56#define OMAP4_DEF_WUP_EVENT_ENA BIT(0)
57#define OMAP4_DEF_WUP_LONG_KEY_ENA BIT(1)
58#define OMAP4_DEF_CTRL_NOSOFTMODE BIT(1)
59#define OMAP4_DEF_CTRL_PTV_SHIFT 2
Abraham Arcea17f79552010-08-31 17:05:27 -070060
61/* OMAP4 values */
Illia Smyrnov875ad692013-08-25 23:25:18 -070062#define OMAP4_VAL_IRQDISABLE 0x0
63#define OMAP4_VAL_DEBOUNCINGTIME 0x7
64#define OMAP4_VAL_PVT 0x7
Abraham Arcea17f79552010-08-31 17:05:27 -070065
Poddar, Souravf77621c2012-05-10 22:32:00 -070066enum {
67 KBD_REVISION_OMAP4 = 0,
68 KBD_REVISION_OMAP5,
69};
70
Abraham Arcea17f79552010-08-31 17:05:27 -070071struct omap4_keypad {
72 struct input_dev *input;
73
74 void __iomem *base;
Illia Smyrnov78608a02013-08-25 23:29:30 -070075 bool irq_wake_enabled;
Poddar, Souravf77621c2012-05-10 22:32:00 -070076 unsigned int irq;
Abraham Arcea17f79552010-08-31 17:05:27 -070077
78 unsigned int rows;
79 unsigned int cols;
Poddar, Souravf77621c2012-05-10 22:32:00 -070080 u32 reg_offset;
81 u32 irqreg_offset;
Abraham Arcea17f79552010-08-31 17:05:27 -070082 unsigned int row_shift;
Sourav Poddar13987432012-07-13 00:10:47 -070083 bool no_autorepeat;
Abraham Arcea17f79552010-08-31 17:05:27 -070084 unsigned char key_state[8];
Sourav Poddar13987432012-07-13 00:10:47 -070085 unsigned short *keymap;
Abraham Arcea17f79552010-08-31 17:05:27 -070086};
87
Poddar, Souravf77621c2012-05-10 22:32:00 -070088static int kbd_readl(struct omap4_keypad *keypad_data, u32 offset)
89{
90 return __raw_readl(keypad_data->base +
91 keypad_data->reg_offset + offset);
92}
93
94static void kbd_writel(struct omap4_keypad *keypad_data, u32 offset, u32 value)
95{
96 __raw_writel(value,
97 keypad_data->base + keypad_data->reg_offset + offset);
98}
99
100static int kbd_read_irqreg(struct omap4_keypad *keypad_data, u32 offset)
101{
102 return __raw_readl(keypad_data->base +
103 keypad_data->irqreg_offset + offset);
104}
105
106static void kbd_write_irqreg(struct omap4_keypad *keypad_data,
107 u32 offset, u32 value)
108{
109 __raw_writel(value,
110 keypad_data->base + keypad_data->irqreg_offset + offset);
111}
112
113
Illia Smyrnovc683da32013-08-25 23:25:50 -0700114/* Interrupt handlers */
115static irqreturn_t omap4_keypad_irq_handler(int irq, void *dev_id)
116{
117 struct omap4_keypad *keypad_data = dev_id;
118
119 if (kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS)) {
120 /* Disable interrupts */
121 kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE,
122 OMAP4_VAL_IRQDISABLE);
123 return IRQ_WAKE_THREAD;
124 }
125
126 return IRQ_NONE;
127}
128
129static irqreturn_t omap4_keypad_irq_thread_fn(int irq, void *dev_id)
Abraham Arcea17f79552010-08-31 17:05:27 -0700130{
131 struct omap4_keypad *keypad_data = dev_id;
132 struct input_dev *input_dev = keypad_data->input;
133 unsigned char key_state[ARRAY_SIZE(keypad_data->key_state)];
134 unsigned int col, row, code, changed;
135 u32 *new_state = (u32 *) key_state;
136
Poddar, Souravf77621c2012-05-10 22:32:00 -0700137 *new_state = kbd_readl(keypad_data, OMAP4_KBD_FULLCODE31_0);
138 *(new_state + 1) = kbd_readl(keypad_data, OMAP4_KBD_FULLCODE63_32);
Abraham Arcea17f79552010-08-31 17:05:27 -0700139
140 for (row = 0; row < keypad_data->rows; row++) {
141 changed = key_state[row] ^ keypad_data->key_state[row];
142 if (!changed)
143 continue;
144
145 for (col = 0; col < keypad_data->cols; col++) {
146 if (changed & (1 << col)) {
147 code = MATRIX_SCAN_CODE(row, col,
148 keypad_data->row_shift);
149 input_event(input_dev, EV_MSC, MSC_SCAN, code);
150 input_report_key(input_dev,
151 keypad_data->keymap[code],
152 key_state[row] & (1 << col));
153 }
154 }
155 }
156
157 input_sync(input_dev);
158
159 memcpy(keypad_data->key_state, key_state,
160 sizeof(keypad_data->key_state));
161
162 /* clear pending interrupts */
Poddar, Souravf77621c2012-05-10 22:32:00 -0700163 kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS,
164 kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS));
Abraham Arcea17f79552010-08-31 17:05:27 -0700165
166 /* enable interrupts */
Poddar, Souravf77621c2012-05-10 22:32:00 -0700167 kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE,
168 OMAP4_DEF_IRQENABLE_EVENTEN |
169 OMAP4_DEF_IRQENABLE_LONGKEY);
Abraham Arcea17f79552010-08-31 17:05:27 -0700170
171 return IRQ_HANDLED;
172}
173
Abraham Arce5ad567f2011-02-22 22:25:59 -0800174static int omap4_keypad_open(struct input_dev *input)
175{
176 struct omap4_keypad *keypad_data = input_get_drvdata(input);
177
178 pm_runtime_get_sync(input->dev.parent);
179
180 disable_irq(keypad_data->irq);
181
Poddar, Souravf77621c2012-05-10 22:32:00 -0700182 kbd_writel(keypad_data, OMAP4_KBD_CTRL,
Illia Smyrnov875ad692013-08-25 23:25:18 -0700183 OMAP4_DEF_CTRL_NOSOFTMODE |
184 (OMAP4_VAL_PVT << OMAP4_DEF_CTRL_PTV_SHIFT));
Poddar, Souravf77621c2012-05-10 22:32:00 -0700185 kbd_writel(keypad_data, OMAP4_KBD_DEBOUNCINGTIME,
186 OMAP4_VAL_DEBOUNCINGTIME);
Illia Smyrnovafbac60b2013-08-25 23:26:16 -0700187 /* clear pending interrupts */
Poddar, Souravf77621c2012-05-10 22:32:00 -0700188 kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS,
Illia Smyrnovafbac60b2013-08-25 23:26:16 -0700189 kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS));
Poddar, Souravf77621c2012-05-10 22:32:00 -0700190 kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE,
191 OMAP4_DEF_IRQENABLE_EVENTEN |
192 OMAP4_DEF_IRQENABLE_LONGKEY);
193 kbd_writel(keypad_data, OMAP4_KBD_WAKEUPENABLE,
194 OMAP4_DEF_WUP_EVENT_ENA | OMAP4_DEF_WUP_LONG_KEY_ENA);
Abraham Arce5ad567f2011-02-22 22:25:59 -0800195
196 enable_irq(keypad_data->irq);
197
198 return 0;
199}
200
201static void omap4_keypad_close(struct input_dev *input)
202{
203 struct omap4_keypad *keypad_data = input_get_drvdata(input);
204
205 disable_irq(keypad_data->irq);
206
207 /* Disable interrupts */
Poddar, Souravf77621c2012-05-10 22:32:00 -0700208 kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE,
209 OMAP4_VAL_IRQDISABLE);
Abraham Arce5ad567f2011-02-22 22:25:59 -0800210
211 /* clear pending interrupts */
Poddar, Souravf77621c2012-05-10 22:32:00 -0700212 kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS,
213 kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS));
Abraham Arce5ad567f2011-02-22 22:25:59 -0800214
215 enable_irq(keypad_data->irq);
216
217 pm_runtime_put_sync(input->dev.parent);
218}
219
Bill Pemberton5298cc42012-11-23 21:38:25 -0800220static int omap4_keypad_parse_dt(struct device *dev,
221 struct omap4_keypad *keypad_data)
Sourav Poddar13987432012-07-13 00:10:47 -0700222{
223 struct device_node *np = dev->of_node;
Simon Glass43840412013-02-25 14:08:40 -0800224 int err;
Sourav Poddar13987432012-07-13 00:10:47 -0700225
Simon Glass43840412013-02-25 14:08:40 -0800226 err = matrix_keypad_parse_of_params(dev, &keypad_data->rows,
227 &keypad_data->cols);
228 if (err)
229 return err;
Sourav Poddar13987432012-07-13 00:10:47 -0700230
231 if (of_get_property(np, "linux,input-no-autorepeat", NULL))
232 keypad_data->no_autorepeat = true;
233
234 return 0;
235}
Sourav Poddar13987432012-07-13 00:10:47 -0700236
Bill Pemberton5298cc42012-11-23 21:38:25 -0800237static int omap4_keypad_probe(struct platform_device *pdev)
Abraham Arcea17f79552010-08-31 17:05:27 -0700238{
Abraham Arcea17f79552010-08-31 17:05:27 -0700239 struct omap4_keypad *keypad_data;
240 struct input_dev *input_dev;
Abraham Arcef3a1ba62010-09-29 23:35:57 -0700241 struct resource *res;
Sourav Poddar13987432012-07-13 00:10:47 -0700242 unsigned int max_keys;
Poddar, Souravf77621c2012-05-10 22:32:00 -0700243 int rev;
Abraham Arcef3a1ba62010-09-29 23:35:57 -0700244 int irq;
Abraham Arcea17f79552010-08-31 17:05:27 -0700245 int error;
246
Abraham Arcef3a1ba62010-09-29 23:35:57 -0700247 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
248 if (!res) {
Abraham Arcea17f79552010-08-31 17:05:27 -0700249 dev_err(&pdev->dev, "no base address specified\n");
250 return -EINVAL;
251 }
252
Abraham Arcef3a1ba62010-09-29 23:35:57 -0700253 irq = platform_get_irq(pdev, 0);
254 if (!irq) {
Abraham Arcea17f79552010-08-31 17:05:27 -0700255 dev_err(&pdev->dev, "no keyboard irq assigned\n");
256 return -EINVAL;
257 }
258
Sourav Poddar13987432012-07-13 00:10:47 -0700259 keypad_data = kzalloc(sizeof(struct omap4_keypad), GFP_KERNEL);
Abraham Arcea17f79552010-08-31 17:05:27 -0700260 if (!keypad_data) {
261 dev_err(&pdev->dev, "keypad_data memory allocation failed\n");
262 return -ENOMEM;
263 }
264
Sourav Poddar13987432012-07-13 00:10:47 -0700265 keypad_data->irq = irq;
Abraham Arcea17f79552010-08-31 17:05:27 -0700266
Joachim Eastwood61721c82014-05-29 00:30:02 -0700267 error = omap4_keypad_parse_dt(&pdev->dev, keypad_data);
268 if (error)
269 return error;
Sourav Poddar13987432012-07-13 00:10:47 -0700270
271 res = request_mem_region(res->start, resource_size(res), pdev->name);
Abraham Arcef3a1ba62010-09-29 23:35:57 -0700272 if (!res) {
273 dev_err(&pdev->dev, "can't request mem region\n");
274 error = -EBUSY;
275 goto err_free_keypad;
276 }
277
278 keypad_data->base = ioremap(res->start, resource_size(res));
279 if (!keypad_data->base) {
280 dev_err(&pdev->dev, "can't ioremap mem resource\n");
281 error = -ENOMEM;
282 goto err_release_mem;
283 }
284
Abraham Arcea17f79552010-08-31 17:05:27 -0700285
Poddar, Souravf77621c2012-05-10 22:32:00 -0700286 /*
Sourav Poddar13987432012-07-13 00:10:47 -0700287 * Enable clocks for the keypad module so that we can read
288 * revision register.
289 */
Poddar, Souravf77621c2012-05-10 22:32:00 -0700290 pm_runtime_enable(&pdev->dev);
291 error = pm_runtime_get_sync(&pdev->dev);
292 if (error) {
293 dev_err(&pdev->dev, "pm_runtime_get_sync() failed\n");
294 goto err_unmap;
295 }
296 rev = __raw_readl(keypad_data->base + OMAP4_KBD_REVISION);
297 rev &= 0x03 << 30;
298 rev >>= 30;
299 switch (rev) {
300 case KBD_REVISION_OMAP4:
301 keypad_data->reg_offset = 0x00;
302 keypad_data->irqreg_offset = 0x00;
303 break;
304 case KBD_REVISION_OMAP5:
305 keypad_data->reg_offset = 0x10;
306 keypad_data->irqreg_offset = 0x0c;
307 break;
308 default:
309 dev_err(&pdev->dev,
310 "Keypad reports unsupported revision %d", rev);
311 error = -EINVAL;
312 goto err_pm_put_sync;
313 }
314
Abraham Arcea17f79552010-08-31 17:05:27 -0700315 /* input device allocation */
316 keypad_data->input = input_dev = input_allocate_device();
317 if (!input_dev) {
318 error = -ENOMEM;
Poddar, Souravf77621c2012-05-10 22:32:00 -0700319 goto err_pm_put_sync;
Abraham Arcea17f79552010-08-31 17:05:27 -0700320 }
321
322 input_dev->name = pdev->name;
323 input_dev->dev.parent = &pdev->dev;
324 input_dev->id.bustype = BUS_HOST;
325 input_dev->id.vendor = 0x0001;
326 input_dev->id.product = 0x0001;
327 input_dev->id.version = 0x0001;
328
Abraham Arce5ad567f2011-02-22 22:25:59 -0800329 input_dev->open = omap4_keypad_open;
330 input_dev->close = omap4_keypad_close;
331
Sourav Poddar13987432012-07-13 00:10:47 -0700332 input_set_capability(input_dev, EV_MSC, MSC_SCAN);
333 if (!keypad_data->no_autorepeat)
334 __set_bit(EV_REP, input_dev->evbit);
335
336 input_set_drvdata(input_dev, keypad_data);
337
338 keypad_data->row_shift = get_count_order(keypad_data->cols);
339 max_keys = keypad_data->rows << keypad_data->row_shift;
340 keypad_data->keymap = kzalloc(max_keys * sizeof(keypad_data->keymap[0]),
341 GFP_KERNEL);
342 if (!keypad_data->keymap) {
343 dev_err(&pdev->dev, "Not enough memory for keymap\n");
344 error = -ENOMEM;
Dmitry Torokhov19328112012-05-10 22:37:08 -0700345 goto err_free_input;
346 }
Abraham Arcea17f79552010-08-31 17:05:27 -0700347
Joachim Eastwood61721c82014-05-29 00:30:02 -0700348 error = matrix_keypad_build_keymap(NULL, NULL,
Sourav Poddar13987432012-07-13 00:10:47 -0700349 keypad_data->rows, keypad_data->cols,
350 keypad_data->keymap, input_dev);
351 if (error) {
352 dev_err(&pdev->dev, "failed to build keymap\n");
353 goto err_free_keymap;
354 }
Abraham Arcea17f79552010-08-31 17:05:27 -0700355
Illia Smyrnovc683da32013-08-25 23:25:50 -0700356 error = request_threaded_irq(keypad_data->irq, omap4_keypad_irq_handler,
Illia Smyrnov50f3c162013-08-25 23:32:45 -0700357 omap4_keypad_irq_thread_fn, 0,
Illia Smyrnovc683da32013-08-25 23:25:50 -0700358 "omap4-keypad", keypad_data);
Abraham Arcea17f79552010-08-31 17:05:27 -0700359 if (error) {
360 dev_err(&pdev->dev, "failed to register interrupt\n");
361 goto err_free_input;
362 }
363
Illia Smyrnov78608a02013-08-25 23:29:30 -0700364 device_init_wakeup(&pdev->dev, true);
Poddar, Souravf77621c2012-05-10 22:32:00 -0700365 pm_runtime_put_sync(&pdev->dev);
Abraham Arce5ad567f2011-02-22 22:25:59 -0800366
Abraham Arcea17f79552010-08-31 17:05:27 -0700367 error = input_register_device(keypad_data->input);
368 if (error < 0) {
369 dev_err(&pdev->dev, "failed to register input device\n");
Abraham Arce5ad567f2011-02-22 22:25:59 -0800370 goto err_pm_disable;
Abraham Arcea17f79552010-08-31 17:05:27 -0700371 }
372
Abraham Arcea17f79552010-08-31 17:05:27 -0700373 platform_set_drvdata(pdev, keypad_data);
374 return 0;
375
Abraham Arce5ad567f2011-02-22 22:25:59 -0800376err_pm_disable:
377 pm_runtime_disable(&pdev->dev);
Illia Smyrnov78608a02013-08-25 23:29:30 -0700378 device_init_wakeup(&pdev->dev, false);
Abraham Arcea17f79552010-08-31 17:05:27 -0700379 free_irq(keypad_data->irq, keypad_data);
Sourav Poddar13987432012-07-13 00:10:47 -0700380err_free_keymap:
381 kfree(keypad_data->keymap);
Abraham Arcea17f79552010-08-31 17:05:27 -0700382err_free_input:
383 input_free_device(input_dev);
Poddar, Souravf77621c2012-05-10 22:32:00 -0700384err_pm_put_sync:
385 pm_runtime_put_sync(&pdev->dev);
Abraham Arcef3a1ba62010-09-29 23:35:57 -0700386err_unmap:
387 iounmap(keypad_data->base);
388err_release_mem:
Sourav Poddar13987432012-07-13 00:10:47 -0700389 release_mem_region(res->start, resource_size(res));
Abraham Arcea17f79552010-08-31 17:05:27 -0700390err_free_keypad:
391 kfree(keypad_data);
392 return error;
393}
394
Bill Pembertone2619cf2012-11-23 21:50:47 -0800395static int omap4_keypad_remove(struct platform_device *pdev)
Abraham Arcea17f79552010-08-31 17:05:27 -0700396{
397 struct omap4_keypad *keypad_data = platform_get_drvdata(pdev);
Abraham Arcef3a1ba62010-09-29 23:35:57 -0700398 struct resource *res;
Abraham Arcea17f79552010-08-31 17:05:27 -0700399
400 free_irq(keypad_data->irq, keypad_data);
Abraham Arce5ad567f2011-02-22 22:25:59 -0800401
402 pm_runtime_disable(&pdev->dev);
403
Illia Smyrnov78608a02013-08-25 23:29:30 -0700404 device_init_wakeup(&pdev->dev, false);
405
Abraham Arcea17f79552010-08-31 17:05:27 -0700406 input_unregister_device(keypad_data->input);
Abraham Arcef3a1ba62010-09-29 23:35:57 -0700407
408 iounmap(keypad_data->base);
409
410 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
411 release_mem_region(res->start, resource_size(res));
412
Sourav Poddar13987432012-07-13 00:10:47 -0700413 kfree(keypad_data->keymap);
Abraham Arcea17f79552010-08-31 17:05:27 -0700414 kfree(keypad_data);
Sourav Poddar13987432012-07-13 00:10:47 -0700415
Abraham Arcea17f79552010-08-31 17:05:27 -0700416 return 0;
417}
418
Sourav Poddar13987432012-07-13 00:10:47 -0700419static const struct of_device_id omap_keypad_dt_match[] = {
420 { .compatible = "ti,omap4-keypad" },
421 {},
422};
423MODULE_DEVICE_TABLE(of, omap_keypad_dt_match);
Sourav Poddar13987432012-07-13 00:10:47 -0700424
Illia Smyrnov78608a02013-08-25 23:29:30 -0700425#ifdef CONFIG_PM_SLEEP
426static int omap4_keypad_suspend(struct device *dev)
427{
428 struct platform_device *pdev = to_platform_device(dev);
429 struct omap4_keypad *keypad_data = platform_get_drvdata(pdev);
430 int error;
431
432 if (device_may_wakeup(&pdev->dev)) {
433 error = enable_irq_wake(keypad_data->irq);
434 if (!error)
435 keypad_data->irq_wake_enabled = true;
436 }
437
438 return 0;
439}
440
441static int omap4_keypad_resume(struct device *dev)
442{
443 struct platform_device *pdev = to_platform_device(dev);
444 struct omap4_keypad *keypad_data = platform_get_drvdata(pdev);
445
446 if (device_may_wakeup(&pdev->dev) && keypad_data->irq_wake_enabled) {
447 disable_irq_wake(keypad_data->irq);
448 keypad_data->irq_wake_enabled = false;
449 }
450
451 return 0;
452}
453#endif
454
455static SIMPLE_DEV_PM_OPS(omap4_keypad_pm_ops,
456 omap4_keypad_suspend, omap4_keypad_resume);
457
Abraham Arcea17f79552010-08-31 17:05:27 -0700458static struct platform_driver omap4_keypad_driver = {
459 .probe = omap4_keypad_probe,
Bill Pemberton1cb0aa82012-11-23 21:27:39 -0800460 .remove = omap4_keypad_remove,
Abraham Arcea17f79552010-08-31 17:05:27 -0700461 .driver = {
462 .name = "omap4-keypad",
Illia Smyrnov78608a02013-08-25 23:29:30 -0700463 .pm = &omap4_keypad_pm_ops,
Joachim Eastwood61721c82014-05-29 00:30:02 -0700464 .of_match_table = omap_keypad_dt_match,
Abraham Arcea17f79552010-08-31 17:05:27 -0700465 },
466};
JJ Ding5146c842011-11-29 11:08:39 -0800467module_platform_driver(omap4_keypad_driver);
Abraham Arcea17f79552010-08-31 17:05:27 -0700468
469MODULE_AUTHOR("Texas Instruments");
470MODULE_DESCRIPTION("OMAP4 Keypad Driver");
471MODULE_LICENSE("GPL");
472MODULE_ALIAS("platform:omap4-keypad");