1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * wm8350-irq.c  --  IRQ support for Wolfson WM8350
36 	int reg;  member
44 		.reg = WM8350_OVER_CURRENT_INT_OFFSET,
50 		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
55 		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
60 		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
65 		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
70 		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
75 		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
80 		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
85 		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
90 		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
95 		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
100 		.reg = WM8350_INT_OFFSET_1,
105 		.reg = WM8350_INT_OFFSET_1,
110 		.reg = WM8350_INT_OFFSET_1,
115 		.reg = WM8350_INT_OFFSET_1,
120 		.reg = WM8350_INT_OFFSET_1,
125 		.reg = WM8350_INT_OFFSET_1,
130 		.reg = WM8350_INT_OFFSET_1,
135 		.reg = WM8350_INT_OFFSET_1,
140 		.reg = WM8350_INT_OFFSET_1,
145 		.reg = WM8350_INT_OFFSET_1,
150 		.reg = WM8350_INT_OFFSET_1,
155 		.reg = WM8350_INT_OFFSET_1,
160 		.reg = WM8350_INT_OFFSET_1,
165 		.reg = WM8350_INT_OFFSET_2,
170 		.reg = WM8350_INT_OFFSET_2,
175 		.reg = WM8350_INT_OFFSET_2,
180 		.reg = WM8350_INT_OFFSET_2,
185 		.reg = WM8350_INT_OFFSET_2,
190 		.reg = WM8350_INT_OFFSET_2,
195 		.reg = WM8350_INT_OFFSET_2,
200 		.reg = WM8350_INT_OFFSET_2,
205 		.reg = WM8350_INT_OFFSET_2,
210 		.reg = WM8350_INT_OFFSET_2,
215 		.reg = WM8350_INT_OFFSET_2,
220 		.reg = WM8350_INT_OFFSET_2,
226 		.reg = WM8350_COMPARATOR_INT_OFFSET,
231 		.reg = WM8350_COMPARATOR_INT_OFFSET,
236 		.reg = WM8350_COMPARATOR_INT_OFFSET,
241 		.reg = WM8350_COMPARATOR_INT_OFFSET,
246 		.reg = WM8350_COMPARATOR_INT_OFFSET,
251 		.reg = WM8350_COMPARATOR_INT_OFFSET,
256 		.reg = WM8350_COMPARATOR_INT_OFFSET,
261 		.reg = WM8350_COMPARATOR_INT_OFFSET,
266 		.reg = WM8350_COMPARATOR_INT_OFFSET,
271 		.reg = WM8350_COMPARATOR_INT_OFFSET,
276 		.reg = WM8350_COMPARATOR_INT_OFFSET,
281 		.reg = WM8350_COMPARATOR_INT_OFFSET,
286 		.reg = WM8350_COMPARATOR_INT_OFFSET,
291 		.reg = WM8350_COMPARATOR_INT_OFFSET,
296 		.reg = WM8350_GPIO_INT_OFFSET,
301 		.reg = WM8350_GPIO_INT_OFFSET,
306 		.reg = WM8350_GPIO_INT_OFFSET,
311 		.reg = WM8350_GPIO_INT_OFFSET,
316 		.reg = WM8350_GPIO_INT_OFFSET,
321 		.reg = WM8350_GPIO_INT_OFFSET,
326 		.reg = WM8350_GPIO_INT_OFFSET,
331 		.reg = WM8350_GPIO_INT_OFFSET,
336 		.reg = WM8350_GPIO_INT_OFFSET,
341 		.reg = WM8350_GPIO_INT_OFFSET,
346 		.reg = WM8350_GPIO_INT_OFFSET,
351 		.reg = WM8350_GPIO_INT_OFFSET,
356 		.reg = WM8350_GPIO_INT_OFFSET,
364 	return &wm8350_irqs[irq - wm8350->irq_base];  in irq_to_wm8350_irq()
371  * asserted while we run - in the normal course of events this is a
382 	struct wm8350_irq_data *data;  in wm8350_irq()  local
394 		data = &wm8350_irqs[i];  in wm8350_irq()
396 		if (!(level_one & data->primary))  in wm8350_irq()
399 		if (!read_done[data->reg]) {  in wm8350_irq()
400 			sub_reg[data->reg] =  in wm8350_irq()
402 						data->reg);  in wm8350_irq()
403 			sub_reg[data->reg] &= ~wm8350->irq_masks[data->reg];  in wm8350_irq()
404 			read_done[data->reg] = 1;  in wm8350_irq()
407 		if (sub_reg[data->reg] & data->mask)  in wm8350_irq()
408 			handle_nested_irq(wm8350->irq_base + i);  in wm8350_irq()
414 static void wm8350_irq_lock(struct irq_data *data)  in wm8350_irq_lock()  argument
416 	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);  in wm8350_irq_lock()
418 	mutex_lock(&wm8350->irq_lock);  in wm8350_irq_lock()
421 static void wm8350_irq_sync_unlock(struct irq_data *data)  in wm8350_irq_sync_unlock()  argument
423 	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);  in wm8350_irq_sync_unlock()
426 	for (i = 0; i < ARRAY_SIZE(wm8350->irq_masks); i++) {  in wm8350_irq_sync_unlock()
429 		WARN_ON(regmap_update_bits(wm8350->regmap,  in wm8350_irq_sync_unlock()
431 					   0xffff, wm8350->irq_masks[i]));  in wm8350_irq_sync_unlock()
434 	mutex_unlock(&wm8350->irq_lock);  in wm8350_irq_sync_unlock()
437 static void wm8350_irq_enable(struct irq_data *data)  in wm8350_irq_enable()  argument
439 	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);  in wm8350_irq_enable()
441 							     data->irq);  in wm8350_irq_enable()
443 	wm8350->irq_masks[irq_data->reg] &= ~irq_data->mask;  in wm8350_irq_enable()
446 static void wm8350_irq_disable(struct irq_data *data)  in wm8350_irq_disable()  argument
448 	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);  in wm8350_irq_disable()
450 							     data->irq);  in wm8350_irq_disable()
452 	wm8350->irq_masks[irq_data->reg] |= irq_data->mask;  in wm8350_irq_disable()
468 	int irq_base = -1;  in wm8350_irq_init()
471 		dev_warn(wm8350->dev, "No interrupt support, no core IRQ\n");  in wm8350_irq_init()
481 	for (i = 0; i < ARRAY_SIZE(wm8350->irq_masks); i++) {  in wm8350_irq_init()
484 		wm8350->irq_masks[i] =  in wm8350_irq_init()
489 	mutex_init(&wm8350->irq_lock);  in wm8350_irq_init()
490 	wm8350->chip_irq = irq;  in wm8350_irq_init()
492 	if (pdata && pdata->irq_base > 0)  in wm8350_irq_init()
493 		irq_base = pdata->irq_base;  in wm8350_irq_init()
495 	wm8350->irq_base =  in wm8350_irq_init()
497 	if (wm8350->irq_base < 0) {  in wm8350_irq_init()
498 		dev_warn(wm8350->dev, "Allocating irqs failed with %d\n",  in wm8350_irq_init()
499 			wm8350->irq_base);  in wm8350_irq_init()
503 	if (pdata && pdata->irq_high) {  in wm8350_irq_init()
516 	for (cur_irq = wm8350->irq_base;  in wm8350_irq_init()
517 	     cur_irq < ARRAY_SIZE(wm8350_irqs) + wm8350->irq_base;  in wm8350_irq_init()
530 		dev_err(wm8350->dev, "Failed to request IRQ: %d\n", ret);  in wm8350_irq_init()
540 	free_irq(wm8350->chip_irq, wm8350);  in wm8350_irq_exit()