Lines Matching +full:debounce +full:- +full:release +full:- +full:ms
1 // SPDX-License-Identifier: GPL-2.0-or-later
52 * Errata i689: If a key is released for a time shorter than debounce time,
53 * the keyboard will idle and never detect the key release. The workaround
54 * is to use at least a 12ms debounce time. See omap5432 TRM chapter
59 ((((dbms) * 1000) / ((1 << ((ptv) + 1)) * (1000000 / 32768))) - 1)
87 return __raw_readl(keypad_data->base + in kbd_readl()
88 keypad_data->reg_offset + offset); in kbd_readl()
94 keypad_data->base + keypad_data->reg_offset + offset); in kbd_writel()
99 return __raw_readl(keypad_data->base + in kbd_read_irqreg()
100 keypad_data->irqreg_offset + offset); in kbd_read_irqreg()
107 keypad_data->base + keypad_data->irqreg_offset + offset); in kbd_write_irqreg()
125 struct input_dev *input_dev = keypad_data->input; in omap4_keypad_irq_thread_fn()
126 unsigned char key_state[ARRAY_SIZE(keypad_data->key_state)]; in omap4_keypad_irq_thread_fn()
133 for (row = 0; row < keypad_data->rows; row++) { in omap4_keypad_irq_thread_fn()
134 changed = key_state[row] ^ keypad_data->key_state[row]; in omap4_keypad_irq_thread_fn()
138 for (col = 0; col < keypad_data->cols; col++) { in omap4_keypad_irq_thread_fn()
141 keypad_data->row_shift); in omap4_keypad_irq_thread_fn()
144 keypad_data->keymap[code], in omap4_keypad_irq_thread_fn()
152 memcpy(keypad_data->key_state, key_state, in omap4_keypad_irq_thread_fn()
153 sizeof(keypad_data->key_state)); in omap4_keypad_irq_thread_fn()
166 pm_runtime_get_sync(input->dev.parent); in omap4_keypad_open()
168 disable_irq(keypad_data->irq); in omap4_keypad_open()
184 enable_irq(keypad_data->irq); in omap4_keypad_open()
191 /* Disable interrupts and wake-up events */ in omap4_keypad_stop()
206 disable_irq(keypad_data->irq); in omap4_keypad_close()
208 enable_irq(keypad_data->irq); in omap4_keypad_close()
210 pm_runtime_put_sync(input->dev.parent); in omap4_keypad_close()
216 struct device_node *np = dev->of_node; in omap4_keypad_parse_dt()
219 err = matrix_keypad_parse_properties(dev, &keypad_data->rows, in omap4_keypad_parse_dt()
220 &keypad_data->cols); in omap4_keypad_parse_dt()
224 if (of_get_property(np, "linux,input-no-autorepeat", NULL)) in omap4_keypad_parse_dt()
225 keypad_data->no_autorepeat = true; in omap4_keypad_parse_dt()
235 rev = __raw_readl(keypad_data->base + OMAP4_KBD_REVISION); in omap4_keypad_check_revision()
240 keypad_data->reg_offset = 0x00; in omap4_keypad_check_revision()
241 keypad_data->irqreg_offset = 0x00; in omap4_keypad_check_revision()
244 keypad_data->reg_offset = 0x10; in omap4_keypad_check_revision()
245 keypad_data->irqreg_offset = 0x0c; in omap4_keypad_check_revision()
249 return -EINVAL; in omap4_keypad_check_revision()
266 dev_err(&pdev->dev, "no base address specified\n"); in omap4_keypad_probe()
267 return -EINVAL; in omap4_keypad_probe()
276 dev_err(&pdev->dev, "keypad_data memory allocation failed\n"); in omap4_keypad_probe()
277 return -ENOMEM; in omap4_keypad_probe()
280 keypad_data->irq = irq; in omap4_keypad_probe()
282 error = omap4_keypad_parse_dt(&pdev->dev, keypad_data); in omap4_keypad_probe()
286 res = request_mem_region(res->start, resource_size(res), pdev->name); in omap4_keypad_probe()
288 dev_err(&pdev->dev, "can't request mem region\n"); in omap4_keypad_probe()
289 error = -EBUSY; in omap4_keypad_probe()
293 keypad_data->base = ioremap(res->start, resource_size(res)); in omap4_keypad_probe()
294 if (!keypad_data->base) { in omap4_keypad_probe()
295 dev_err(&pdev->dev, "can't ioremap mem resource\n"); in omap4_keypad_probe()
296 error = -ENOMEM; in omap4_keypad_probe()
300 pm_runtime_enable(&pdev->dev); in omap4_keypad_probe()
306 error = pm_runtime_get_sync(&pdev->dev); in omap4_keypad_probe()
308 dev_err(&pdev->dev, "pm_runtime_get_sync() failed\n"); in omap4_keypad_probe()
309 pm_runtime_put_noidle(&pdev->dev); in omap4_keypad_probe()
311 error = omap4_keypad_check_revision(&pdev->dev, in omap4_keypad_probe()
317 pm_runtime_put_sync(&pdev->dev); in omap4_keypad_probe()
323 keypad_data->input = input_dev = input_allocate_device(); in omap4_keypad_probe()
325 error = -ENOMEM; in omap4_keypad_probe()
329 input_dev->name = pdev->name; in omap4_keypad_probe()
330 input_dev->dev.parent = &pdev->dev; in omap4_keypad_probe()
331 input_dev->id.bustype = BUS_HOST; in omap4_keypad_probe()
332 input_dev->id.vendor = 0x0001; in omap4_keypad_probe()
333 input_dev->id.product = 0x0001; in omap4_keypad_probe()
334 input_dev->id.version = 0x0001; in omap4_keypad_probe()
336 input_dev->open = omap4_keypad_open; in omap4_keypad_probe()
337 input_dev->close = omap4_keypad_close; in omap4_keypad_probe()
340 if (!keypad_data->no_autorepeat) in omap4_keypad_probe()
341 __set_bit(EV_REP, input_dev->evbit); in omap4_keypad_probe()
345 keypad_data->row_shift = get_count_order(keypad_data->cols); in omap4_keypad_probe()
346 max_keys = keypad_data->rows << keypad_data->row_shift; in omap4_keypad_probe()
347 keypad_data->keymap = kcalloc(max_keys, in omap4_keypad_probe()
348 sizeof(keypad_data->keymap[0]), in omap4_keypad_probe()
350 if (!keypad_data->keymap) { in omap4_keypad_probe()
351 dev_err(&pdev->dev, "Not enough memory for keymap\n"); in omap4_keypad_probe()
352 error = -ENOMEM; in omap4_keypad_probe()
357 keypad_data->rows, keypad_data->cols, in omap4_keypad_probe()
358 keypad_data->keymap, input_dev); in omap4_keypad_probe()
360 dev_err(&pdev->dev, "failed to build keymap\n"); in omap4_keypad_probe()
364 error = request_threaded_irq(keypad_data->irq, omap4_keypad_irq_handler, in omap4_keypad_probe()
366 "omap4-keypad", keypad_data); in omap4_keypad_probe()
368 dev_err(&pdev->dev, "failed to register interrupt\n"); in omap4_keypad_probe()
372 error = input_register_device(keypad_data->input); in omap4_keypad_probe()
374 dev_err(&pdev->dev, "failed to register input device\n"); in omap4_keypad_probe()
378 device_init_wakeup(&pdev->dev, true); in omap4_keypad_probe()
384 free_irq(keypad_data->irq, keypad_data); in omap4_keypad_probe()
386 kfree(keypad_data->keymap); in omap4_keypad_probe()
390 pm_runtime_disable(&pdev->dev); in omap4_keypad_probe()
391 iounmap(keypad_data->base); in omap4_keypad_probe()
393 release_mem_region(res->start, resource_size(res)); in omap4_keypad_probe()
404 free_irq(keypad_data->irq, keypad_data); in omap4_keypad_remove()
406 pm_runtime_disable(&pdev->dev); in omap4_keypad_remove()
408 input_unregister_device(keypad_data->input); in omap4_keypad_remove()
410 iounmap(keypad_data->base); in omap4_keypad_remove()
413 release_mem_region(res->start, resource_size(res)); in omap4_keypad_remove()
415 kfree(keypad_data->keymap); in omap4_keypad_remove()
422 { .compatible = "ti,omap4-keypad" },
434 if (device_may_wakeup(&pdev->dev)) { in omap4_keypad_suspend()
435 error = enable_irq_wake(keypad_data->irq); in omap4_keypad_suspend()
437 keypad_data->irq_wake_enabled = true; in omap4_keypad_suspend()
448 if (device_may_wakeup(&pdev->dev) && keypad_data->irq_wake_enabled) { in omap4_keypad_resume()
449 disable_irq_wake(keypad_data->irq); in omap4_keypad_resume()
450 keypad_data->irq_wake_enabled = false; in omap4_keypad_resume()
464 .name = "omap4-keypad",
474 MODULE_ALIAS("platform:omap4-keypad");