1 // SPDX-License-Identifier: GPL-2.0-or-later
61 	((((dbms) * 1000) / ((1 << ((ptv) + 1)) * (1000000 / 32768))) - 1)
90 static int kbd_readl(struct omap4_keypad *keypad_data, u32 offset)  in kbd_readl()  argument
92 	return __raw_readl(keypad_data->base +  in kbd_readl()
93 				keypad_data->reg_offset + offset);  in kbd_readl()
96 static void kbd_writel(struct omap4_keypad *keypad_data, u32 offset, u32 value)  in kbd_writel()  argument
99 		     keypad_data->base + keypad_data->reg_offset + offset);  in kbd_writel()
102 static int kbd_read_irqreg(struct omap4_keypad *keypad_data, u32 offset)  in kbd_read_irqreg()  argument
104 	return __raw_readl(keypad_data->base +  in kbd_read_irqreg()
105 				keypad_data->irqreg_offset + offset);  in kbd_read_irqreg()
109 			     u32 offset, u32 value)  in kbd_write_irqreg()  argument
112 		     keypad_data->base + keypad_data->irqreg_offset + offset);  in kbd_write_irqreg()
118 	struct input_dev *input_dev = keypad_data->input;  in omap4_keypad_report_keys()
119 	unsigned int col, row, code;  in omap4_keypad_report_keys()  local
126 	for_each_set_bit(bit, mask, keypad_data->rows * BITS_PER_BYTE) {  in omap4_keypad_report_keys()
128 		col = bit % BITS_PER_BYTE;  in omap4_keypad_report_keys()
129 		code = MATRIX_SCAN_CODE(row, col, keypad_data->row_shift);  in omap4_keypad_report_keys()
132 		input_report_key(input_dev, keypad_data->keymap[code], down);  in omap4_keypad_report_keys()
147 	guard(mutex)(&keypad_data->lock);  in omap4_keypad_scan_keys()
149 	changed = keys ^ keypad_data->keys;  in omap4_keypad_scan_keys()
153 	 * lost key-up interrupt and just now catching up.  in omap4_keypad_scan_keys()
160 	keypad_data->keys = keys;  in omap4_keypad_scan_keys()
177 	struct device *dev = keypad_data->input->dev.parent;  in omap4_keypad_irq_thread_fn()
205 	struct device *dev = input->dev.parent;  in omap4_keypad_open()
212 	error = clk_prepare_enable(keypad_data->fck);  in omap4_keypad_open()
216 	disable_irq(keypad_data->irq);  in omap4_keypad_open()
231 	enable_irq(keypad_data->irq);  in omap4_keypad_open()
242 	/* Disable interrupts and wake-up events */  in omap4_keypad_stop()
255 	struct device *dev = input->dev.parent;  in omap4_keypad_close()
263 	disable_irq(keypad_data->irq);  in omap4_keypad_close()
265 	enable_irq(keypad_data->irq);  in omap4_keypad_close()
266 	clk_disable_unprepare(keypad_data->fck);  in omap4_keypad_close()
275 	struct device_node *np = dev->of_node;  in omap4_keypad_parse_dt()
278 	err = matrix_keypad_parse_properties(dev, &keypad_data->rows,  in omap4_keypad_parse_dt()
279 					     &keypad_data->cols);  in omap4_keypad_parse_dt()
283 	keypad_data->no_autorepeat = of_property_read_bool(np, "linux,input-no-autorepeat");  in omap4_keypad_parse_dt()
293 	rev = __raw_readl(keypad_data->base + OMAP4_KBD_REVISION);  in omap4_keypad_check_revision()
298 		keypad_data->reg_offset = 0x00;  in omap4_keypad_check_revision()
299 		keypad_data->irqreg_offset = 0x00;  in omap4_keypad_check_revision()
302 		keypad_data->reg_offset = 0x10;  in omap4_keypad_check_revision()
303 		keypad_data->irqreg_offset = 0x0c;  in omap4_keypad_check_revision()
307 		return -EINVAL;  in omap4_keypad_check_revision()
315  * Interrupt may not happen for key-up events. We must clear stuck
316  * key-up events after the keyboard hardware has auto-idled.
327 		return -EBUSY;  in omap4_keypad_runtime_suspend()
347 	struct device *dev = &pdev->dev;  in omap4_keypad_probe()
361 		return -ENOMEM;  in omap4_keypad_probe()
364 	keypad_data->irq = irq;  in omap4_keypad_probe()
365 	keypad_data->fck = devm_clk_get(&pdev->dev, "fck");  in omap4_keypad_probe()
366 	if (IS_ERR(keypad_data->fck))  in omap4_keypad_probe()
367 		return dev_err_probe(&pdev->dev, PTR_ERR(keypad_data->fck),  in omap4_keypad_probe()
370 	mutex_init(&keypad_data->lock);  in omap4_keypad_probe()
377 	keypad_data->base = devm_platform_ioremap_resource(pdev, 0);  in omap4_keypad_probe()
378 	if (IS_ERR(keypad_data->base))  in omap4_keypad_probe()
379 		return PTR_ERR(keypad_data->base);  in omap4_keypad_probe()
413 	keypad_data->input = input_dev = devm_input_allocate_device(dev);  in omap4_keypad_probe()
415 		return -ENOMEM;  in omap4_keypad_probe()
417 	input_dev->name = pdev->name;  in omap4_keypad_probe()
418 	input_dev->id.bustype = BUS_HOST;  in omap4_keypad_probe()
419 	input_dev->id.vendor = 0x0001;  in omap4_keypad_probe()
420 	input_dev->id.product = 0x0001;  in omap4_keypad_probe()
421 	input_dev->id.version = 0x0001;  in omap4_keypad_probe()
423 	input_dev->open = omap4_keypad_open;  in omap4_keypad_probe()
424 	input_dev->close = omap4_keypad_close;  in omap4_keypad_probe()
427 	if (!keypad_data->no_autorepeat)  in omap4_keypad_probe()
428 		__set_bit(EV_REP, input_dev->evbit);  in omap4_keypad_probe()
432 	keypad_data->row_shift = get_count_order(keypad_data->cols);  in omap4_keypad_probe()
433 	max_keys = keypad_data->rows << keypad_data->row_shift;  in omap4_keypad_probe()
434 	keypad_data->keymap = devm_kcalloc(dev,  in omap4_keypad_probe()
436 					   sizeof(keypad_data->keymap[0]),  in omap4_keypad_probe()
438 	if (!keypad_data->keymap) {  in omap4_keypad_probe()
440 		return -ENOMEM;  in omap4_keypad_probe()
444 					   keypad_data->rows, keypad_data->cols,  in omap4_keypad_probe()
445 					   keypad_data->keymap, input_dev);  in omap4_keypad_probe()
451 	error = devm_request_threaded_irq(dev, keypad_data->irq,  in omap4_keypad_probe()
455 					  "omap4-keypad", keypad_data);  in omap4_keypad_probe()
461 	error = input_register_device(keypad_data->input);  in omap4_keypad_probe()
468 	error = dev_pm_set_wake_irq(dev, keypad_data->irq);  in omap4_keypad_probe()
477 	dev_pm_clear_wake_irq(&pdev->dev);  in omap4_keypad_remove()
481 	{ .compatible = "ti,omap4-keypad" },
490 		.name	= "omap4-keypad",
500 MODULE_ALIAS("platform:omap4-keypad");