166 static int max732x_writeb(struct max732x_chip *chip, int group_a, uint8_t val)  in max732x_writeb()  argument
171 	client = group_a ? chip->client_group_a : chip->client_group_b;  in max732x_writeb()
181 static int max732x_readb(struct max732x_chip *chip, int group_a, uint8_t *val)  in max732x_readb()  argument
186 	client = group_a ? chip->client_group_a : chip->client_group_b;  in max732x_readb()
197 static inline int is_group_a(struct max732x_chip *chip, unsigned off)  in is_group_a()  argument
199 	return (1u << off) & chip->mask_group_a;  in is_group_a()
204 	struct max732x_chip *chip = to_max732x(gc);  in max732x_gpio_get_value()  local
208 	ret = max732x_readb(chip, is_group_a(chip, off), &reg_val);  in max732x_gpio_get_value()
218 	struct max732x_chip *chip = to_max732x(gc);  in max732x_gpio_set_mask()  local
222 	mutex_lock(&chip->lock);  in max732x_gpio_set_mask()
224 	reg_out = (off > 7) ? chip->reg_out[1] : chip->reg_out[0];  in max732x_gpio_set_mask()
227 	ret = max732x_writeb(chip, is_group_a(chip, off), reg_out);  in max732x_gpio_set_mask()
233 		chip->reg_out[1] = reg_out;  in max732x_gpio_set_mask()
235 		chip->reg_out[0] = reg_out;  in max732x_gpio_set_mask()
237 	mutex_unlock(&chip->lock);  in max732x_gpio_set_mask()
262 	struct max732x_chip *chip = to_max732x(gc);  in max732x_gpio_direction_input()  local
265 	if ((mask & chip->dir_input) == 0) {  in max732x_gpio_direction_input()
266 		dev_dbg(&chip->client->dev, "%s port %d is output only\n",  in max732x_gpio_direction_input()
267 			chip->client->name, off);  in max732x_gpio_direction_input()
275 	if ((mask & chip->dir_output))  in max732x_gpio_direction_input()
284 	struct max732x_chip *chip = to_max732x(gc);  in max732x_gpio_direction_output()  local
287 	if ((mask & chip->dir_output) == 0) {  in max732x_gpio_direction_output()
288 		dev_dbg(&chip->client->dev, "%s port %d is input only\n",  in max732x_gpio_direction_output()
289 			chip->client->name, off);  in max732x_gpio_direction_output()
298 static int max732x_writew(struct max732x_chip *chip, uint16_t val)  in max732x_writew()  argument
304 	ret = i2c_master_send(chip->client_group_a, (char *)&val, 2);  in max732x_writew()
306 		dev_err(&chip->client_group_a->dev, "failed writing\n");  in max732x_writew()
313 static int max732x_readw(struct max732x_chip *chip, uint16_t *val)  in max732x_readw()  argument
317 	ret = i2c_master_recv(chip->client_group_a, (char *)val, 2);  in max732x_readw()
319 		dev_err(&chip->client_group_a->dev, "failed reading\n");  in max732x_readw()
327 static void max732x_irq_update_mask(struct max732x_chip *chip)  in max732x_irq_update_mask()  argument
331 	if (chip->irq_mask == chip->irq_mask_cur)  in max732x_irq_update_mask()
334 	chip->irq_mask = chip->irq_mask_cur;  in max732x_irq_update_mask()
336 	if (chip->irq_features == INT_NO_MASK)  in max732x_irq_update_mask()
339 	mutex_lock(&chip->lock);  in max732x_irq_update_mask()
341 	switch (chip->irq_features) {  in max732x_irq_update_mask()
343 		msg = (chip->irq_mask << 8) | chip->reg_out[0];  in max732x_irq_update_mask()
344 		max732x_writew(chip, msg);  in max732x_irq_update_mask()
348 		msg = chip->irq_mask | chip->reg_out[0];  in max732x_irq_update_mask()
349 		max732x_writeb(chip, 1, (uint8_t)msg);  in max732x_irq_update_mask()
353 	mutex_unlock(&chip->lock);  in max732x_irq_update_mask()
359 	struct max732x_chip *chip = to_max732x(gc);  in max732x_irq_mask()  local
361 	chip->irq_mask_cur &= ~(1 << d->hwirq);  in max732x_irq_mask()
367 	struct max732x_chip *chip = to_max732x(gc);  in max732x_irq_unmask()  local
369 	chip->irq_mask_cur |= 1 << d->hwirq;  in max732x_irq_unmask()
375 	struct max732x_chip *chip = to_max732x(gc);  in max732x_irq_bus_lock()  local
377 	mutex_lock(&chip->irq_lock);  in max732x_irq_bus_lock()
378 	chip->irq_mask_cur = chip->irq_mask;  in max732x_irq_bus_lock()
384 	struct max732x_chip *chip = to_max732x(gc);  in max732x_irq_bus_sync_unlock()  local
388 	max732x_irq_update_mask(chip);  in max732x_irq_bus_sync_unlock()
390 	new_irqs = chip->irq_trig_fall | chip->irq_trig_raise;  in max732x_irq_bus_sync_unlock()
393 		max732x_gpio_direction_input(&chip->gpio_chip, level);  in max732x_irq_bus_sync_unlock()
397 	mutex_unlock(&chip->irq_lock);  in max732x_irq_bus_sync_unlock()
403 	struct max732x_chip *chip = to_max732x(gc);  in max732x_irq_set_type()  local
407 	if (!(mask & chip->dir_input)) {  in max732x_irq_set_type()
408 		dev_dbg(&chip->client->dev, "%s port %d is output only\n",  in max732x_irq_set_type()
409 			chip->client->name, off);  in max732x_irq_set_type()
414 		dev_err(&chip->client->dev, "irq %d: unsupported type %d\n",  in max732x_irq_set_type()
420 		chip->irq_trig_fall |= mask;  in max732x_irq_set_type()
422 		chip->irq_trig_fall &= ~mask;  in max732x_irq_set_type()
425 		chip->irq_trig_raise |= mask;  in max732x_irq_set_type()
427 		chip->irq_trig_raise &= ~mask;  in max732x_irq_set_type()
441 static uint8_t max732x_irq_pending(struct max732x_chip *chip)  in max732x_irq_pending()  argument
450 	ret = max732x_readw(chip, &status);  in max732x_irq_pending()
455 	trigger &= chip->irq_mask;  in max732x_irq_pending()
461 	cur_stat &= chip->irq_mask;  in max732x_irq_pending()
465 	pending = (old_stat & chip->irq_trig_fall) |  in max732x_irq_pending()
466 		  (cur_stat & chip->irq_trig_raise);  in max732x_irq_pending()
474 	struct max732x_chip *chip = devid;  in max732x_irq_handler()  local
478 	pending = max732x_irq_pending(chip);  in max732x_irq_handler()
485 		handle_nested_irq(irq_find_mapping(chip->gpio_chip.irqdomain,  in max732x_irq_handler()
494 static int max732x_irq_setup(struct max732x_chip *chip,  in max732x_irq_setup()  argument
497 	struct i2c_client *client = chip->client;  in max732x_irq_setup()
507 		chip->irq_features = has_irq;  in max732x_irq_setup()
508 		mutex_init(&chip->irq_lock);  in max732x_irq_setup()
515 					dev_name(&client->dev), chip);  in max732x_irq_setup()
521 		ret =  gpiochip_irqchip_add(&chip->gpio_chip,  in max732x_irq_setup()
531 		gpiochip_set_chained_irqchip(&chip->gpio_chip,  in max732x_irq_setup()
541 static int max732x_irq_setup(struct max732x_chip *chip,  in max732x_irq_setup()  argument
544 	struct i2c_client *client = chip->client;  in max732x_irq_setup()
555 static int max732x_setup_gpio(struct max732x_chip *chip,  in max732x_setup_gpio()  argument
559 	struct gpio_chip *gc = &chip->gpio_chip;  in max732x_setup_gpio()
568 			chip->dir_output |= mask;  in max732x_setup_gpio()
571 			chip->dir_input |= mask;  in max732x_setup_gpio()
574 			chip->dir_output |= mask;  in max732x_setup_gpio()
575 			chip->dir_input |= mask;  in max732x_setup_gpio()
582 			chip->mask_group_a |= mask;  in max732x_setup_gpio()
586 	if (chip->dir_input)  in max732x_setup_gpio()
588 	if (chip->dir_output) {  in max732x_setup_gpio()
598 	gc->label = chip->client->name;  in max732x_setup_gpio()
622 	struct max732x_chip *chip;  in max732x_probe()  local
638 	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);  in max732x_probe()
639 	if (chip == NULL)  in max732x_probe()
641 	chip->client = client;  in max732x_probe()
643 	nr_port = max732x_setup_gpio(chip, id, pdata->gpio_base);  in max732x_probe()
644 	chip->gpio_chip.dev = &client->dev;  in max732x_probe()
651 		chip->client_group_a = client;  in max732x_probe()
654 			chip->client_group_b = chip->client_dummy = c;  in max732x_probe()
658 		chip->client_group_b = client;  in max732x_probe()
661 			chip->client_group_a = chip->client_dummy = c;  in max732x_probe()
671 	if (nr_port > 8 && !chip->client_dummy) {  in max732x_probe()
678 	mutex_init(&chip->lock);  in max732x_probe()
680 	max732x_readb(chip, is_group_a(chip, 0), &chip->reg_out[0]);  in max732x_probe()
682 		max732x_readb(chip, is_group_a(chip, 8), &chip->reg_out[1]);  in max732x_probe()
684 	ret = gpiochip_add(&chip->gpio_chip);  in max732x_probe()
688 	ret = max732x_irq_setup(chip, id);  in max732x_probe()
690 		gpiochip_remove(&chip->gpio_chip);  in max732x_probe()
695 		ret = pdata->setup(client, chip->gpio_chip.base,  in max732x_probe()
696 				chip->gpio_chip.ngpio, pdata->context);  in max732x_probe()
701 	i2c_set_clientdata(client, chip);  in max732x_probe()
705 	if (chip->client_dummy)  in max732x_probe()
706 		i2c_unregister_device(chip->client_dummy);  in max732x_probe()
713 	struct max732x_chip *chip = i2c_get_clientdata(client);  in max732x_remove()  local
718 		ret = pdata->teardown(client, chip->gpio_chip.base,  in max732x_remove()
719 				chip->gpio_chip.ngpio, pdata->context);  in max732x_remove()
727 	gpiochip_remove(&chip->gpio_chip);  in max732x_remove()
730 	if (chip->client_dummy)  in max732x_remove()
731 		i2c_unregister_device(chip->client_dummy);  in max732x_remove()