Lines Matching +full:keypad +full:- +full:wakeup
1 // SPDX-License-Identifier: GPL-2.0-only
43 * HiZ when de-activated to cause minmal side effect when scanning other
50 bool level_on = !pdata->active_low; in __activate_col()
53 gpio_direction_output(pdata->col_gpios[col], level_on); in __activate_col()
55 gpio_set_value_cansleep(pdata->col_gpios[col], !level_on); in __activate_col()
56 if (!pdata->drive_inactive_cols) in __activate_col()
57 gpio_direction_input(pdata->col_gpios[col]); in __activate_col()
66 if (on && pdata->col_scan_delay_us) in activate_col()
67 udelay(pdata->col_scan_delay_us); in activate_col()
75 for (col = 0; col < pdata->num_col_gpios; col++) in activate_all_cols()
82 return gpio_get_value_cansleep(pdata->row_gpios[row]) ? in row_asserted()
83 !pdata->active_low : pdata->active_low; in row_asserted()
86 static void enable_row_irqs(struct matrix_keypad *keypad) in enable_row_irqs() argument
88 const struct matrix_keypad_platform_data *pdata = keypad->pdata; in enable_row_irqs()
91 if (pdata->clustered_irq > 0) in enable_row_irqs()
92 enable_irq(pdata->clustered_irq); in enable_row_irqs()
94 for (i = 0; i < pdata->num_row_gpios; i++) in enable_row_irqs()
95 enable_irq(gpio_to_irq(pdata->row_gpios[i])); in enable_row_irqs()
99 static void disable_row_irqs(struct matrix_keypad *keypad) in disable_row_irqs() argument
101 const struct matrix_keypad_platform_data *pdata = keypad->pdata; in disable_row_irqs()
104 if (pdata->clustered_irq > 0) in disable_row_irqs()
105 disable_irq_nosync(pdata->clustered_irq); in disable_row_irqs()
107 for (i = 0; i < pdata->num_row_gpios; i++) in disable_row_irqs()
108 disable_irq_nosync(gpio_to_irq(pdata->row_gpios[i])); in disable_row_irqs()
117 struct matrix_keypad *keypad = in matrix_keypad_scan() local
119 struct input_dev *input_dev = keypad->input_dev; in matrix_keypad_scan()
120 const unsigned short *keycodes = input_dev->keycode; in matrix_keypad_scan()
121 const struct matrix_keypad_platform_data *pdata = keypad->pdata; in matrix_keypad_scan()
125 /* de-activate all columns for scanning */ in matrix_keypad_scan()
130 for (row = 0; row < pdata->num_row_gpios; row++) in matrix_keypad_scan()
131 gpio_direction_input(pdata->row_gpios[row]); in matrix_keypad_scan()
134 for (col = 0; col < pdata->num_col_gpios; col++) { in matrix_keypad_scan()
138 for (row = 0; row < pdata->num_row_gpios; row++) in matrix_keypad_scan()
145 for (col = 0; col < pdata->num_col_gpios; col++) { in matrix_keypad_scan()
148 bits_changed = keypad->last_key_state[col] ^ new_state[col]; in matrix_keypad_scan()
152 for (row = 0; row < pdata->num_row_gpios; row++) { in matrix_keypad_scan()
156 code = MATRIX_SCAN_CODE(row, col, keypad->row_shift); in matrix_keypad_scan()
165 memcpy(keypad->last_key_state, new_state, sizeof(new_state)); in matrix_keypad_scan()
170 spin_lock_irq(&keypad->lock); in matrix_keypad_scan()
171 keypad->scan_pending = false; in matrix_keypad_scan()
172 enable_row_irqs(keypad); in matrix_keypad_scan()
173 spin_unlock_irq(&keypad->lock); in matrix_keypad_scan()
178 struct matrix_keypad *keypad = id; in matrix_keypad_interrupt() local
181 spin_lock_irqsave(&keypad->lock, flags); in matrix_keypad_interrupt()
188 if (unlikely(keypad->scan_pending || keypad->stopped)) in matrix_keypad_interrupt()
191 disable_row_irqs(keypad); in matrix_keypad_interrupt()
192 keypad->scan_pending = true; in matrix_keypad_interrupt()
193 schedule_delayed_work(&keypad->work, in matrix_keypad_interrupt()
194 msecs_to_jiffies(keypad->pdata->debounce_ms)); in matrix_keypad_interrupt()
197 spin_unlock_irqrestore(&keypad->lock, flags); in matrix_keypad_interrupt()
203 struct matrix_keypad *keypad = input_get_drvdata(dev); in matrix_keypad_start() local
205 keypad->stopped = false; in matrix_keypad_start()
212 schedule_delayed_work(&keypad->work, 0); in matrix_keypad_start()
219 struct matrix_keypad *keypad = input_get_drvdata(dev); in matrix_keypad_stop() local
221 spin_lock_irq(&keypad->lock); in matrix_keypad_stop()
222 keypad->stopped = true; in matrix_keypad_stop()
223 spin_unlock_irq(&keypad->lock); in matrix_keypad_stop()
225 flush_delayed_work(&keypad->work); in matrix_keypad_stop()
230 disable_row_irqs(keypad); in matrix_keypad_stop()
233 static void matrix_keypad_enable_wakeup(struct matrix_keypad *keypad) in matrix_keypad_enable_wakeup() argument
235 const struct matrix_keypad_platform_data *pdata = keypad->pdata; in matrix_keypad_enable_wakeup()
239 if (pdata->clustered_irq > 0) { in matrix_keypad_enable_wakeup()
240 if (enable_irq_wake(pdata->clustered_irq) == 0) in matrix_keypad_enable_wakeup()
241 keypad->gpio_all_disabled = true; in matrix_keypad_enable_wakeup()
244 for (i = 0; i < pdata->num_row_gpios; i++) { in matrix_keypad_enable_wakeup()
245 if (!test_bit(i, keypad->disabled_gpios)) { in matrix_keypad_enable_wakeup()
246 gpio = pdata->row_gpios[i]; in matrix_keypad_enable_wakeup()
249 __set_bit(i, keypad->disabled_gpios); in matrix_keypad_enable_wakeup()
255 static void matrix_keypad_disable_wakeup(struct matrix_keypad *keypad) in matrix_keypad_disable_wakeup() argument
257 const struct matrix_keypad_platform_data *pdata = keypad->pdata; in matrix_keypad_disable_wakeup()
261 if (pdata->clustered_irq > 0) { in matrix_keypad_disable_wakeup()
262 if (keypad->gpio_all_disabled) { in matrix_keypad_disable_wakeup()
263 disable_irq_wake(pdata->clustered_irq); in matrix_keypad_disable_wakeup()
264 keypad->gpio_all_disabled = false; in matrix_keypad_disable_wakeup()
267 for (i = 0; i < pdata->num_row_gpios; i++) { in matrix_keypad_disable_wakeup()
268 if (test_and_clear_bit(i, keypad->disabled_gpios)) { in matrix_keypad_disable_wakeup()
269 gpio = pdata->row_gpios[i]; in matrix_keypad_disable_wakeup()
279 struct matrix_keypad *keypad = platform_get_drvdata(pdev); in matrix_keypad_suspend() local
281 matrix_keypad_stop(keypad->input_dev); in matrix_keypad_suspend()
283 if (device_may_wakeup(&pdev->dev)) in matrix_keypad_suspend()
284 matrix_keypad_enable_wakeup(keypad); in matrix_keypad_suspend()
292 struct matrix_keypad *keypad = platform_get_drvdata(pdev); in matrix_keypad_resume() local
294 if (device_may_wakeup(&pdev->dev)) in matrix_keypad_resume()
295 matrix_keypad_disable_wakeup(keypad); in matrix_keypad_resume()
297 matrix_keypad_start(keypad->input_dev); in matrix_keypad_resume()
306 struct matrix_keypad *keypad) in matrix_keypad_init_gpio() argument
308 const struct matrix_keypad_platform_data *pdata = keypad->pdata; in matrix_keypad_init_gpio()
312 for (i = 0; i < pdata->num_col_gpios; i++) { in matrix_keypad_init_gpio()
313 err = gpio_request(pdata->col_gpios[i], "matrix_kbd_col"); in matrix_keypad_init_gpio()
315 dev_err(&pdev->dev, in matrix_keypad_init_gpio()
317 pdata->col_gpios[i], i); in matrix_keypad_init_gpio()
321 gpio_direction_output(pdata->col_gpios[i], !pdata->active_low); in matrix_keypad_init_gpio()
324 for (i = 0; i < pdata->num_row_gpios; i++) { in matrix_keypad_init_gpio()
325 err = gpio_request(pdata->row_gpios[i], "matrix_kbd_row"); in matrix_keypad_init_gpio()
327 dev_err(&pdev->dev, in matrix_keypad_init_gpio()
329 pdata->row_gpios[i], i); in matrix_keypad_init_gpio()
333 gpio_direction_input(pdata->row_gpios[i]); in matrix_keypad_init_gpio()
336 if (pdata->clustered_irq > 0) { in matrix_keypad_init_gpio()
337 err = request_any_context_irq(pdata->clustered_irq, in matrix_keypad_init_gpio()
339 pdata->clustered_irq_flags, in matrix_keypad_init_gpio()
340 "matrix-keypad", keypad); in matrix_keypad_init_gpio()
342 dev_err(&pdev->dev, in matrix_keypad_init_gpio()
347 for (i = 0; i < pdata->num_row_gpios; i++) { in matrix_keypad_init_gpio()
349 gpio_to_irq(pdata->row_gpios[i]), in matrix_keypad_init_gpio()
353 "matrix-keypad", keypad); in matrix_keypad_init_gpio()
355 dev_err(&pdev->dev, in matrix_keypad_init_gpio()
357 pdata->row_gpios[i]); in matrix_keypad_init_gpio()
363 /* initialized as disabled - enabled by input->open */ in matrix_keypad_init_gpio()
364 disable_row_irqs(keypad); in matrix_keypad_init_gpio()
368 while (--i >= 0) in matrix_keypad_init_gpio()
369 free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad); in matrix_keypad_init_gpio()
370 i = pdata->num_row_gpios; in matrix_keypad_init_gpio()
372 while (--i >= 0) in matrix_keypad_init_gpio()
373 gpio_free(pdata->row_gpios[i]); in matrix_keypad_init_gpio()
374 i = pdata->num_col_gpios; in matrix_keypad_init_gpio()
376 while (--i >= 0) in matrix_keypad_init_gpio()
377 gpio_free(pdata->col_gpios[i]); in matrix_keypad_init_gpio()
382 static void matrix_keypad_free_gpio(struct matrix_keypad *keypad) in matrix_keypad_free_gpio() argument
384 const struct matrix_keypad_platform_data *pdata = keypad->pdata; in matrix_keypad_free_gpio()
387 if (pdata->clustered_irq > 0) { in matrix_keypad_free_gpio()
388 free_irq(pdata->clustered_irq, keypad); in matrix_keypad_free_gpio()
390 for (i = 0; i < pdata->num_row_gpios; i++) in matrix_keypad_free_gpio()
391 free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad); in matrix_keypad_free_gpio()
394 for (i = 0; i < pdata->num_row_gpios; i++) in matrix_keypad_free_gpio()
395 gpio_free(pdata->row_gpios[i]); in matrix_keypad_free_gpio()
397 for (i = 0; i < pdata->num_col_gpios; i++) in matrix_keypad_free_gpio()
398 gpio_free(pdata->col_gpios[i]); in matrix_keypad_free_gpio()
406 struct device_node *np = dev->of_node; in matrix_keypad_parse_dt()
412 return ERR_PTR(-ENODEV); in matrix_keypad_parse_dt()
418 return ERR_PTR(-ENOMEM); in matrix_keypad_parse_dt()
421 pdata->num_row_gpios = nrow = gpiod_count(dev, "row"); in matrix_keypad_parse_dt()
422 pdata->num_col_gpios = ncol = gpiod_count(dev, "col"); in matrix_keypad_parse_dt()
424 dev_err(dev, "number of keypad rows/columns not specified\n"); in matrix_keypad_parse_dt()
425 return ERR_PTR(-EINVAL); in matrix_keypad_parse_dt()
428 pdata->no_autorepeat = of_property_read_bool(np, "linux,no-autorepeat"); in matrix_keypad_parse_dt()
430 pdata->wakeup = of_property_read_bool(np, "wakeup-source") || in matrix_keypad_parse_dt()
431 of_property_read_bool(np, "linux,wakeup"); /* legacy */ in matrix_keypad_parse_dt()
433 pdata->active_low = of_property_read_bool(np, "gpio-activelow"); in matrix_keypad_parse_dt()
435 pdata->drive_inactive_cols = in matrix_keypad_parse_dt()
436 of_property_read_bool(np, "drive-inactive-cols"); in matrix_keypad_parse_dt()
438 of_property_read_u32(np, "debounce-delay-ms", &pdata->debounce_ms); in matrix_keypad_parse_dt()
439 of_property_read_u32(np, "col-scan-delay-us", in matrix_keypad_parse_dt()
440 &pdata->col_scan_delay_us); in matrix_keypad_parse_dt()
443 pdata->num_row_gpios + pdata->num_col_gpios, in matrix_keypad_parse_dt()
448 return ERR_PTR(-ENOMEM); in matrix_keypad_parse_dt()
452 ret = of_get_named_gpio(np, "row-gpios", i); in matrix_keypad_parse_dt()
459 ret = of_get_named_gpio(np, "col-gpios", i); in matrix_keypad_parse_dt()
465 pdata->row_gpios = gpios; in matrix_keypad_parse_dt()
466 pdata->col_gpios = &gpios[pdata->num_row_gpios]; in matrix_keypad_parse_dt()
476 return ERR_PTR(-EINVAL); in matrix_keypad_parse_dt()
483 struct matrix_keypad *keypad; in matrix_keypad_probe() local
487 pdata = dev_get_platdata(&pdev->dev); in matrix_keypad_probe()
489 pdata = matrix_keypad_parse_dt(&pdev->dev); in matrix_keypad_probe()
492 } else if (!pdata->keymap_data) { in matrix_keypad_probe()
493 dev_err(&pdev->dev, "no keymap data defined\n"); in matrix_keypad_probe()
494 return -EINVAL; in matrix_keypad_probe()
497 keypad = kzalloc(sizeof(struct matrix_keypad), GFP_KERNEL); in matrix_keypad_probe()
499 if (!keypad || !input_dev) { in matrix_keypad_probe()
500 err = -ENOMEM; in matrix_keypad_probe()
504 keypad->input_dev = input_dev; in matrix_keypad_probe()
505 keypad->pdata = pdata; in matrix_keypad_probe()
506 keypad->row_shift = get_count_order(pdata->num_col_gpios); in matrix_keypad_probe()
507 keypad->stopped = true; in matrix_keypad_probe()
508 INIT_DELAYED_WORK(&keypad->work, matrix_keypad_scan); in matrix_keypad_probe()
509 spin_lock_init(&keypad->lock); in matrix_keypad_probe()
511 input_dev->name = pdev->name; in matrix_keypad_probe()
512 input_dev->id.bustype = BUS_HOST; in matrix_keypad_probe()
513 input_dev->dev.parent = &pdev->dev; in matrix_keypad_probe()
514 input_dev->open = matrix_keypad_start; in matrix_keypad_probe()
515 input_dev->close = matrix_keypad_stop; in matrix_keypad_probe()
517 err = matrix_keypad_build_keymap(pdata->keymap_data, NULL, in matrix_keypad_probe()
518 pdata->num_row_gpios, in matrix_keypad_probe()
519 pdata->num_col_gpios, in matrix_keypad_probe()
522 dev_err(&pdev->dev, "failed to build keymap\n"); in matrix_keypad_probe()
526 if (!pdata->no_autorepeat) in matrix_keypad_probe()
527 __set_bit(EV_REP, input_dev->evbit); in matrix_keypad_probe()
529 input_set_drvdata(input_dev, keypad); in matrix_keypad_probe()
531 err = matrix_keypad_init_gpio(pdev, keypad); in matrix_keypad_probe()
535 err = input_register_device(keypad->input_dev); in matrix_keypad_probe()
539 device_init_wakeup(&pdev->dev, pdata->wakeup); in matrix_keypad_probe()
540 platform_set_drvdata(pdev, keypad); in matrix_keypad_probe()
545 matrix_keypad_free_gpio(keypad); in matrix_keypad_probe()
548 kfree(keypad); in matrix_keypad_probe()
554 struct matrix_keypad *keypad = platform_get_drvdata(pdev); in matrix_keypad_remove() local
556 matrix_keypad_free_gpio(keypad); in matrix_keypad_remove()
557 input_unregister_device(keypad->input_dev); in matrix_keypad_remove()
558 kfree(keypad); in matrix_keypad_remove()
563 { .compatible = "gpio-matrix-keypad" },
573 .name = "matrix-keypad",
581 MODULE_DESCRIPTION("GPIO Driven Matrix Keypad Driver");
583 MODULE_ALIAS("platform:matrix-keypad");