1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Samsung keypad driver |
4 | * |
5 | * Copyright (C) 2010 Samsung Electronics Co.Ltd |
6 | * Author: Joonyoung Shim <jy0922.shim@samsung.com> |
7 | * Author: Donghwa Lee <dh09.lee@samsung.com> |
8 | */ |
9 | |
10 | #include <linux/clk.h> |
11 | #include <linux/delay.h> |
12 | #include <linux/err.h> |
13 | #include <linux/input.h> |
14 | #include <linux/interrupt.h> |
15 | #include <linux/io.h> |
16 | #include <linux/module.h> |
17 | #include <linux/platform_device.h> |
18 | #include <linux/pm.h> |
19 | #include <linux/pm_runtime.h> |
20 | #include <linux/slab.h> |
21 | #include <linux/of.h> |
22 | #include <linux/sched.h> |
23 | #include <linux/input/samsung-keypad.h> |
24 | |
25 | #define SAMSUNG_KEYIFCON 0x00 |
26 | #define SAMSUNG_KEYIFSTSCLR 0x04 |
27 | #define SAMSUNG_KEYIFCOL 0x08 |
28 | #define SAMSUNG_KEYIFROW 0x0c |
29 | #define SAMSUNG_KEYIFFC 0x10 |
30 | |
31 | /* SAMSUNG_KEYIFCON */ |
32 | #define SAMSUNG_KEYIFCON_INT_F_EN (1 << 0) |
33 | #define SAMSUNG_KEYIFCON_INT_R_EN (1 << 1) |
34 | #define SAMSUNG_KEYIFCON_DF_EN (1 << 2) |
35 | #define SAMSUNG_KEYIFCON_FC_EN (1 << 3) |
36 | #define SAMSUNG_KEYIFCON_WAKEUPEN (1 << 4) |
37 | |
38 | /* SAMSUNG_KEYIFSTSCLR */ |
39 | #define SAMSUNG_KEYIFSTSCLR_P_INT_MASK (0xff << 0) |
40 | #define SAMSUNG_KEYIFSTSCLR_R_INT_MASK (0xff << 8) |
41 | #define SAMSUNG_KEYIFSTSCLR_R_INT_OFFSET 8 |
42 | #define S5PV210_KEYIFSTSCLR_P_INT_MASK (0x3fff << 0) |
43 | #define S5PV210_KEYIFSTSCLR_R_INT_MASK (0x3fff << 16) |
44 | #define S5PV210_KEYIFSTSCLR_R_INT_OFFSET 16 |
45 | |
46 | /* SAMSUNG_KEYIFCOL */ |
47 | #define SAMSUNG_KEYIFCOL_MASK (0xff << 0) |
48 | #define S5PV210_KEYIFCOLEN_MASK (0xff << 8) |
49 | |
50 | /* SAMSUNG_KEYIFROW */ |
51 | #define SAMSUNG_KEYIFROW_MASK (0xff << 0) |
52 | #define S5PV210_KEYIFROW_MASK (0x3fff << 0) |
53 | |
54 | /* SAMSUNG_KEYIFFC */ |
55 | #define SAMSUNG_KEYIFFC_MASK (0x3ff << 0) |
56 | |
57 | enum samsung_keypad_type { |
58 | KEYPAD_TYPE_SAMSUNG, |
59 | KEYPAD_TYPE_S5PV210, |
60 | }; |
61 | |
62 | struct samsung_keypad { |
63 | struct input_dev *input_dev; |
64 | struct platform_device *pdev; |
65 | struct clk *clk; |
66 | void __iomem *base; |
67 | wait_queue_head_t wait; |
68 | bool stopped; |
69 | bool wake_enabled; |
70 | int irq; |
71 | enum samsung_keypad_type type; |
72 | unsigned int row_shift; |
73 | unsigned int rows; |
74 | unsigned int cols; |
75 | unsigned int row_state[SAMSUNG_MAX_COLS]; |
76 | unsigned short keycodes[]; |
77 | }; |
78 | |
79 | static void samsung_keypad_scan(struct samsung_keypad *keypad, |
80 | unsigned int *row_state) |
81 | { |
82 | unsigned int col; |
83 | unsigned int val; |
84 | |
85 | for (col = 0; col < keypad->cols; col++) { |
86 | if (keypad->type == KEYPAD_TYPE_S5PV210) { |
87 | val = S5PV210_KEYIFCOLEN_MASK; |
88 | val &= ~(1 << col) << 8; |
89 | } else { |
90 | val = SAMSUNG_KEYIFCOL_MASK; |
91 | val &= ~(1 << col); |
92 | } |
93 | |
94 | writel(val, addr: keypad->base + SAMSUNG_KEYIFCOL); |
95 | mdelay(1); |
96 | |
97 | val = readl(addr: keypad->base + SAMSUNG_KEYIFROW); |
98 | row_state[col] = ~val & ((1 << keypad->rows) - 1); |
99 | } |
100 | |
101 | /* KEYIFCOL reg clear */ |
102 | writel(val: 0, addr: keypad->base + SAMSUNG_KEYIFCOL); |
103 | } |
104 | |
105 | static bool samsung_keypad_report(struct samsung_keypad *keypad, |
106 | unsigned int *row_state) |
107 | { |
108 | struct input_dev *input_dev = keypad->input_dev; |
109 | unsigned int changed; |
110 | unsigned int pressed; |
111 | unsigned int key_down = 0; |
112 | unsigned int val; |
113 | unsigned int col, row; |
114 | |
115 | for (col = 0; col < keypad->cols; col++) { |
116 | changed = row_state[col] ^ keypad->row_state[col]; |
117 | key_down |= row_state[col]; |
118 | if (!changed) |
119 | continue; |
120 | |
121 | for (row = 0; row < keypad->rows; row++) { |
122 | if (!(changed & (1 << row))) |
123 | continue; |
124 | |
125 | pressed = row_state[col] & (1 << row); |
126 | |
127 | dev_dbg(&keypad->input_dev->dev, |
128 | "key %s, row: %d, col: %d\n" , |
129 | pressed ? "pressed" : "released" , row, col); |
130 | |
131 | val = MATRIX_SCAN_CODE(row, col, keypad->row_shift); |
132 | |
133 | input_event(dev: input_dev, EV_MSC, MSC_SCAN, value: val); |
134 | input_report_key(dev: input_dev, |
135 | code: keypad->keycodes[val], value: pressed); |
136 | } |
137 | input_sync(dev: keypad->input_dev); |
138 | } |
139 | |
140 | memcpy(keypad->row_state, row_state, sizeof(keypad->row_state)); |
141 | |
142 | return key_down; |
143 | } |
144 | |
145 | static irqreturn_t samsung_keypad_irq(int irq, void *dev_id) |
146 | { |
147 | struct samsung_keypad *keypad = dev_id; |
148 | unsigned int row_state[SAMSUNG_MAX_COLS]; |
149 | bool key_down; |
150 | |
151 | pm_runtime_get_sync(dev: &keypad->pdev->dev); |
152 | |
153 | do { |
154 | readl(addr: keypad->base + SAMSUNG_KEYIFSTSCLR); |
155 | /* Clear interrupt. */ |
156 | writel(val: ~0x0, addr: keypad->base + SAMSUNG_KEYIFSTSCLR); |
157 | |
158 | samsung_keypad_scan(keypad, row_state); |
159 | |
160 | key_down = samsung_keypad_report(keypad, row_state); |
161 | if (key_down) |
162 | wait_event_timeout(keypad->wait, keypad->stopped, |
163 | msecs_to_jiffies(50)); |
164 | |
165 | } while (key_down && !keypad->stopped); |
166 | |
167 | pm_runtime_put(dev: &keypad->pdev->dev); |
168 | |
169 | return IRQ_HANDLED; |
170 | } |
171 | |
172 | static void samsung_keypad_start(struct samsung_keypad *keypad) |
173 | { |
174 | unsigned int val; |
175 | |
176 | pm_runtime_get_sync(dev: &keypad->pdev->dev); |
177 | |
178 | /* Tell IRQ thread that it may poll the device. */ |
179 | keypad->stopped = false; |
180 | |
181 | clk_enable(clk: keypad->clk); |
182 | |
183 | /* Enable interrupt bits. */ |
184 | val = readl(addr: keypad->base + SAMSUNG_KEYIFCON); |
185 | val |= SAMSUNG_KEYIFCON_INT_F_EN | SAMSUNG_KEYIFCON_INT_R_EN; |
186 | writel(val, addr: keypad->base + SAMSUNG_KEYIFCON); |
187 | |
188 | /* KEYIFCOL reg clear. */ |
189 | writel(val: 0, addr: keypad->base + SAMSUNG_KEYIFCOL); |
190 | |
191 | pm_runtime_put(dev: &keypad->pdev->dev); |
192 | } |
193 | |
194 | static void samsung_keypad_stop(struct samsung_keypad *keypad) |
195 | { |
196 | unsigned int val; |
197 | |
198 | pm_runtime_get_sync(dev: &keypad->pdev->dev); |
199 | |
200 | /* Signal IRQ thread to stop polling and disable the handler. */ |
201 | keypad->stopped = true; |
202 | wake_up(&keypad->wait); |
203 | disable_irq(irq: keypad->irq); |
204 | |
205 | /* Clear interrupt. */ |
206 | writel(val: ~0x0, addr: keypad->base + SAMSUNG_KEYIFSTSCLR); |
207 | |
208 | /* Disable interrupt bits. */ |
209 | val = readl(addr: keypad->base + SAMSUNG_KEYIFCON); |
210 | val &= ~(SAMSUNG_KEYIFCON_INT_F_EN | SAMSUNG_KEYIFCON_INT_R_EN); |
211 | writel(val, addr: keypad->base + SAMSUNG_KEYIFCON); |
212 | |
213 | clk_disable(clk: keypad->clk); |
214 | |
215 | /* |
216 | * Now that chip should not generate interrupts we can safely |
217 | * re-enable the handler. |
218 | */ |
219 | enable_irq(irq: keypad->irq); |
220 | |
221 | pm_runtime_put(dev: &keypad->pdev->dev); |
222 | } |
223 | |
224 | static int samsung_keypad_open(struct input_dev *input_dev) |
225 | { |
226 | struct samsung_keypad *keypad = input_get_drvdata(dev: input_dev); |
227 | |
228 | samsung_keypad_start(keypad); |
229 | |
230 | return 0; |
231 | } |
232 | |
233 | static void samsung_keypad_close(struct input_dev *input_dev) |
234 | { |
235 | struct samsung_keypad *keypad = input_get_drvdata(dev: input_dev); |
236 | |
237 | samsung_keypad_stop(keypad); |
238 | } |
239 | |
240 | #ifdef CONFIG_OF |
241 | static struct samsung_keypad_platdata * |
242 | samsung_keypad_parse_dt(struct device *dev) |
243 | { |
244 | struct samsung_keypad_platdata *pdata; |
245 | struct matrix_keymap_data *keymap_data; |
246 | uint32_t *keymap, num_rows = 0, num_cols = 0; |
247 | struct device_node *np = dev->of_node, *key_np; |
248 | unsigned int key_count; |
249 | |
250 | if (!np) { |
251 | dev_err(dev, "missing device tree data\n" ); |
252 | return ERR_PTR(error: -EINVAL); |
253 | } |
254 | |
255 | pdata = devm_kzalloc(dev, size: sizeof(*pdata), GFP_KERNEL); |
256 | if (!pdata) { |
257 | dev_err(dev, "could not allocate memory for platform data\n" ); |
258 | return ERR_PTR(error: -ENOMEM); |
259 | } |
260 | |
261 | of_property_read_u32(np, propname: "samsung,keypad-num-rows" , out_value: &num_rows); |
262 | of_property_read_u32(np, propname: "samsung,keypad-num-columns" , out_value: &num_cols); |
263 | if (!num_rows || !num_cols) { |
264 | dev_err(dev, "number of keypad rows/columns not specified\n" ); |
265 | return ERR_PTR(error: -EINVAL); |
266 | } |
267 | pdata->rows = num_rows; |
268 | pdata->cols = num_cols; |
269 | |
270 | keymap_data = devm_kzalloc(dev, size: sizeof(*keymap_data), GFP_KERNEL); |
271 | if (!keymap_data) { |
272 | dev_err(dev, "could not allocate memory for keymap data\n" ); |
273 | return ERR_PTR(error: -ENOMEM); |
274 | } |
275 | pdata->keymap_data = keymap_data; |
276 | |
277 | key_count = of_get_child_count(np); |
278 | keymap_data->keymap_size = key_count; |
279 | keymap = devm_kcalloc(dev, n: key_count, size: sizeof(uint32_t), GFP_KERNEL); |
280 | if (!keymap) { |
281 | dev_err(dev, "could not allocate memory for keymap\n" ); |
282 | return ERR_PTR(error: -ENOMEM); |
283 | } |
284 | keymap_data->keymap = keymap; |
285 | |
286 | for_each_child_of_node(np, key_np) { |
287 | u32 row, col, key_code; |
288 | of_property_read_u32(np: key_np, propname: "keypad,row" , out_value: &row); |
289 | of_property_read_u32(np: key_np, propname: "keypad,column" , out_value: &col); |
290 | of_property_read_u32(np: key_np, propname: "linux,code" , out_value: &key_code); |
291 | *keymap++ = KEY(row, col, key_code); |
292 | } |
293 | |
294 | pdata->no_autorepeat = of_property_read_bool(np, propname: "linux,input-no-autorepeat" ); |
295 | |
296 | pdata->wakeup = of_property_read_bool(np, propname: "wakeup-source" ) || |
297 | /* legacy name */ |
298 | of_property_read_bool(np, propname: "linux,input-wakeup" ); |
299 | |
300 | |
301 | return pdata; |
302 | } |
303 | #else |
304 | static struct samsung_keypad_platdata * |
305 | samsung_keypad_parse_dt(struct device *dev) |
306 | { |
307 | dev_err(dev, "no platform data defined\n" ); |
308 | |
309 | return ERR_PTR(-EINVAL); |
310 | } |
311 | #endif |
312 | |
313 | static int samsung_keypad_probe(struct platform_device *pdev) |
314 | { |
315 | const struct samsung_keypad_platdata *pdata; |
316 | const struct matrix_keymap_data *keymap_data; |
317 | struct samsung_keypad *keypad; |
318 | struct resource *res; |
319 | struct input_dev *input_dev; |
320 | unsigned int row_shift; |
321 | unsigned int keymap_size; |
322 | int error; |
323 | |
324 | pdata = dev_get_platdata(dev: &pdev->dev); |
325 | if (!pdata) { |
326 | pdata = samsung_keypad_parse_dt(dev: &pdev->dev); |
327 | if (IS_ERR(ptr: pdata)) |
328 | return PTR_ERR(ptr: pdata); |
329 | } |
330 | |
331 | keymap_data = pdata->keymap_data; |
332 | if (!keymap_data) { |
333 | dev_err(&pdev->dev, "no keymap data defined\n" ); |
334 | return -EINVAL; |
335 | } |
336 | |
337 | if (!pdata->rows || pdata->rows > SAMSUNG_MAX_ROWS) |
338 | return -EINVAL; |
339 | |
340 | if (!pdata->cols || pdata->cols > SAMSUNG_MAX_COLS) |
341 | return -EINVAL; |
342 | |
343 | /* initialize the gpio */ |
344 | if (pdata->cfg_gpio) |
345 | pdata->cfg_gpio(pdata->rows, pdata->cols); |
346 | |
347 | row_shift = get_count_order(count: pdata->cols); |
348 | keymap_size = (pdata->rows << row_shift) * sizeof(keypad->keycodes[0]); |
349 | |
350 | keypad = devm_kzalloc(dev: &pdev->dev, size: sizeof(*keypad) + keymap_size, |
351 | GFP_KERNEL); |
352 | input_dev = devm_input_allocate_device(&pdev->dev); |
353 | if (!keypad || !input_dev) |
354 | return -ENOMEM; |
355 | |
356 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
357 | if (!res) |
358 | return -ENODEV; |
359 | |
360 | keypad->base = devm_ioremap(dev: &pdev->dev, offset: res->start, size: resource_size(res)); |
361 | if (!keypad->base) |
362 | return -EBUSY; |
363 | |
364 | keypad->clk = devm_clk_get(dev: &pdev->dev, id: "keypad" ); |
365 | if (IS_ERR(ptr: keypad->clk)) { |
366 | dev_err(&pdev->dev, "failed to get keypad clk\n" ); |
367 | return PTR_ERR(ptr: keypad->clk); |
368 | } |
369 | |
370 | error = clk_prepare(clk: keypad->clk); |
371 | if (error) { |
372 | dev_err(&pdev->dev, "keypad clock prepare failed\n" ); |
373 | return error; |
374 | } |
375 | |
376 | keypad->input_dev = input_dev; |
377 | keypad->pdev = pdev; |
378 | keypad->row_shift = row_shift; |
379 | keypad->rows = pdata->rows; |
380 | keypad->cols = pdata->cols; |
381 | keypad->stopped = true; |
382 | init_waitqueue_head(&keypad->wait); |
383 | |
384 | if (pdev->dev.of_node) |
385 | keypad->type = of_device_is_compatible(device: pdev->dev.of_node, |
386 | "samsung,s5pv210-keypad" ); |
387 | else |
388 | keypad->type = platform_get_device_id(pdev)->driver_data; |
389 | |
390 | input_dev->name = pdev->name; |
391 | input_dev->id.bustype = BUS_HOST; |
392 | input_dev->dev.parent = &pdev->dev; |
393 | |
394 | input_dev->open = samsung_keypad_open; |
395 | input_dev->close = samsung_keypad_close; |
396 | |
397 | error = matrix_keypad_build_keymap(keymap_data, NULL, |
398 | rows: pdata->rows, cols: pdata->cols, |
399 | keymap: keypad->keycodes, input_dev); |
400 | if (error) { |
401 | dev_err(&pdev->dev, "failed to build keymap\n" ); |
402 | goto err_unprepare_clk; |
403 | } |
404 | |
405 | input_set_capability(dev: input_dev, EV_MSC, MSC_SCAN); |
406 | if (!pdata->no_autorepeat) |
407 | __set_bit(EV_REP, input_dev->evbit); |
408 | |
409 | input_set_drvdata(dev: input_dev, data: keypad); |
410 | |
411 | keypad->irq = platform_get_irq(pdev, 0); |
412 | if (keypad->irq < 0) { |
413 | error = keypad->irq; |
414 | goto err_unprepare_clk; |
415 | } |
416 | |
417 | error = devm_request_threaded_irq(dev: &pdev->dev, irq: keypad->irq, NULL, |
418 | thread_fn: samsung_keypad_irq, IRQF_ONESHOT, |
419 | devname: dev_name(dev: &pdev->dev), dev_id: keypad); |
420 | if (error) { |
421 | dev_err(&pdev->dev, "failed to register keypad interrupt\n" ); |
422 | goto err_unprepare_clk; |
423 | } |
424 | |
425 | device_init_wakeup(dev: &pdev->dev, enable: pdata->wakeup); |
426 | platform_set_drvdata(pdev, data: keypad); |
427 | pm_runtime_enable(dev: &pdev->dev); |
428 | |
429 | error = input_register_device(keypad->input_dev); |
430 | if (error) |
431 | goto err_disable_runtime_pm; |
432 | |
433 | if (pdev->dev.of_node) { |
434 | devm_kfree(dev: &pdev->dev, p: (void *)pdata->keymap_data->keymap); |
435 | devm_kfree(dev: &pdev->dev, p: (void *)pdata->keymap_data); |
436 | devm_kfree(dev: &pdev->dev, p: (void *)pdata); |
437 | } |
438 | return 0; |
439 | |
440 | err_disable_runtime_pm: |
441 | pm_runtime_disable(dev: &pdev->dev); |
442 | err_unprepare_clk: |
443 | clk_unprepare(clk: keypad->clk); |
444 | return error; |
445 | } |
446 | |
447 | static int samsung_keypad_remove(struct platform_device *pdev) |
448 | { |
449 | struct samsung_keypad *keypad = platform_get_drvdata(pdev); |
450 | |
451 | pm_runtime_disable(dev: &pdev->dev); |
452 | |
453 | input_unregister_device(keypad->input_dev); |
454 | |
455 | clk_unprepare(clk: keypad->clk); |
456 | |
457 | return 0; |
458 | } |
459 | |
460 | static int samsung_keypad_runtime_suspend(struct device *dev) |
461 | { |
462 | struct platform_device *pdev = to_platform_device(dev); |
463 | struct samsung_keypad *keypad = platform_get_drvdata(pdev); |
464 | unsigned int val; |
465 | int error; |
466 | |
467 | if (keypad->stopped) |
468 | return 0; |
469 | |
470 | /* This may fail on some SoCs due to lack of controller support */ |
471 | error = enable_irq_wake(irq: keypad->irq); |
472 | if (!error) |
473 | keypad->wake_enabled = true; |
474 | |
475 | val = readl(addr: keypad->base + SAMSUNG_KEYIFCON); |
476 | val |= SAMSUNG_KEYIFCON_WAKEUPEN; |
477 | writel(val, addr: keypad->base + SAMSUNG_KEYIFCON); |
478 | |
479 | clk_disable(clk: keypad->clk); |
480 | |
481 | return 0; |
482 | } |
483 | |
484 | static int samsung_keypad_runtime_resume(struct device *dev) |
485 | { |
486 | struct platform_device *pdev = to_platform_device(dev); |
487 | struct samsung_keypad *keypad = platform_get_drvdata(pdev); |
488 | unsigned int val; |
489 | |
490 | if (keypad->stopped) |
491 | return 0; |
492 | |
493 | clk_enable(clk: keypad->clk); |
494 | |
495 | val = readl(addr: keypad->base + SAMSUNG_KEYIFCON); |
496 | val &= ~SAMSUNG_KEYIFCON_WAKEUPEN; |
497 | writel(val, addr: keypad->base + SAMSUNG_KEYIFCON); |
498 | |
499 | if (keypad->wake_enabled) |
500 | disable_irq_wake(irq: keypad->irq); |
501 | |
502 | return 0; |
503 | } |
504 | |
505 | static void samsung_keypad_toggle_wakeup(struct samsung_keypad *keypad, |
506 | bool enable) |
507 | { |
508 | unsigned int val; |
509 | |
510 | clk_enable(clk: keypad->clk); |
511 | |
512 | val = readl(addr: keypad->base + SAMSUNG_KEYIFCON); |
513 | if (enable) { |
514 | val |= SAMSUNG_KEYIFCON_WAKEUPEN; |
515 | if (device_may_wakeup(dev: &keypad->pdev->dev)) |
516 | enable_irq_wake(irq: keypad->irq); |
517 | } else { |
518 | val &= ~SAMSUNG_KEYIFCON_WAKEUPEN; |
519 | if (device_may_wakeup(dev: &keypad->pdev->dev)) |
520 | disable_irq_wake(irq: keypad->irq); |
521 | } |
522 | writel(val, addr: keypad->base + SAMSUNG_KEYIFCON); |
523 | |
524 | clk_disable(clk: keypad->clk); |
525 | } |
526 | |
527 | static int samsung_keypad_suspend(struct device *dev) |
528 | { |
529 | struct platform_device *pdev = to_platform_device(dev); |
530 | struct samsung_keypad *keypad = platform_get_drvdata(pdev); |
531 | struct input_dev *input_dev = keypad->input_dev; |
532 | |
533 | mutex_lock(&input_dev->mutex); |
534 | |
535 | if (input_device_enabled(dev: input_dev)) |
536 | samsung_keypad_stop(keypad); |
537 | |
538 | samsung_keypad_toggle_wakeup(keypad, enable: true); |
539 | |
540 | mutex_unlock(lock: &input_dev->mutex); |
541 | |
542 | return 0; |
543 | } |
544 | |
545 | static int samsung_keypad_resume(struct device *dev) |
546 | { |
547 | struct platform_device *pdev = to_platform_device(dev); |
548 | struct samsung_keypad *keypad = platform_get_drvdata(pdev); |
549 | struct input_dev *input_dev = keypad->input_dev; |
550 | |
551 | mutex_lock(&input_dev->mutex); |
552 | |
553 | samsung_keypad_toggle_wakeup(keypad, enable: false); |
554 | |
555 | if (input_device_enabled(dev: input_dev)) |
556 | samsung_keypad_start(keypad); |
557 | |
558 | mutex_unlock(lock: &input_dev->mutex); |
559 | |
560 | return 0; |
561 | } |
562 | |
563 | static const struct dev_pm_ops samsung_keypad_pm_ops = { |
564 | SYSTEM_SLEEP_PM_OPS(samsung_keypad_suspend, samsung_keypad_resume) |
565 | RUNTIME_PM_OPS(samsung_keypad_runtime_suspend, |
566 | samsung_keypad_runtime_resume, NULL) |
567 | }; |
568 | |
569 | #ifdef CONFIG_OF |
570 | static const struct of_device_id samsung_keypad_dt_match[] = { |
571 | { .compatible = "samsung,s3c6410-keypad" }, |
572 | { .compatible = "samsung,s5pv210-keypad" }, |
573 | {}, |
574 | }; |
575 | MODULE_DEVICE_TABLE(of, samsung_keypad_dt_match); |
576 | #endif |
577 | |
578 | static const struct platform_device_id samsung_keypad_driver_ids[] = { |
579 | { |
580 | .name = "samsung-keypad" , |
581 | .driver_data = KEYPAD_TYPE_SAMSUNG, |
582 | }, { |
583 | .name = "s5pv210-keypad" , |
584 | .driver_data = KEYPAD_TYPE_S5PV210, |
585 | }, |
586 | { }, |
587 | }; |
588 | MODULE_DEVICE_TABLE(platform, samsung_keypad_driver_ids); |
589 | |
590 | static struct platform_driver samsung_keypad_driver = { |
591 | .probe = samsung_keypad_probe, |
592 | .remove = samsung_keypad_remove, |
593 | .driver = { |
594 | .name = "samsung-keypad" , |
595 | .of_match_table = of_match_ptr(samsung_keypad_dt_match), |
596 | .pm = pm_ptr(&samsung_keypad_pm_ops), |
597 | }, |
598 | .id_table = samsung_keypad_driver_ids, |
599 | }; |
600 | module_platform_driver(samsung_keypad_driver); |
601 | |
602 | MODULE_DESCRIPTION("Samsung keypad driver" ); |
603 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>" ); |
604 | MODULE_AUTHOR("Donghwa Lee <dh09.lee@samsung.com>" ); |
605 | MODULE_LICENSE("GPL" ); |
606 | |