4  * SPDX-License-Identifier: Apache-2.0
20 #define AW9523B_GPOMD             BIT(4)
61 	const struct gpio_aw9523b_config *const config = dev->config;  in gpio_aw9523b_pin_configure()
63 	const uint8_t mask = BIT(pin % 8);  in gpio_aw9523b_pin_configure()
70 		return -EWOULDBLOCK;  in gpio_aw9523b_pin_configure()
73 	/* Either INPUT or OUTPUT must be set */  in gpio_aw9523b_pin_configure()
76 		return -ENOTSUP;  in gpio_aw9523b_pin_configure()
79 	/* Open-drain support is per port, not per pin.  in gpio_aw9523b_pin_configure()
80 	 * So can't really support the API as-is.  in gpio_aw9523b_pin_configure()
82 	if (port == 0 && !config->port0_push_pull) {  in gpio_aw9523b_pin_configure()
84 			return -ENOTSUP;  in gpio_aw9523b_pin_configure()
88 			return -ENOTSUP;  in gpio_aw9523b_pin_configure()
93 		return -ENOTSUP;  in gpio_aw9523b_pin_configure()
96 	k_sem_take(aw9523b_get_lock(config->mfd_dev), K_FOREVER);  in gpio_aw9523b_pin_configure()
98 	err = i2c_reg_update_byte_dt(&config->i2c, AW9523B_REG_CONFIG(port), mask, input_en);  in gpio_aw9523b_pin_configure()
100 		LOG_ERR("%s: Failed to set pin%d direction (%d)", dev->name, pin, err);  in gpio_aw9523b_pin_configure()
105 	if (config->int_gpio.port) {  in gpio_aw9523b_pin_configure()
107 			struct gpio_aw9523b_data *const data = dev->data;  in gpio_aw9523b_pin_configure()
111 			err = i2c_burst_read_dt(&config->i2c, AW9523B_REG_INPUT0, buf, sizeof(buf));  in gpio_aw9523b_pin_configure()
113 				LOG_ERR("%s: Read initial pin state failed (%d)", dev->name, err);  in gpio_aw9523b_pin_configure()
117 			WRITE_BIT(data->prev_value, pin, sys_get_le16(buf) & BIT(pin));  in gpio_aw9523b_pin_configure()
119 			struct gpio_aw9523b_data *const data = dev->data;  in gpio_aw9523b_pin_configure()
121 			WRITE_BIT(data->falling_event_pins, pin, 0);  in gpio_aw9523b_pin_configure()
122 			WRITE_BIT(data->rising_event_pins, pin, 0);  in gpio_aw9523b_pin_configure()
127 	err = i2c_reg_update_byte_dt(&config->i2c, AW9523B_REG_OUTPUT(port), mask, out_high);  in gpio_aw9523b_pin_configure()
129 		LOG_ERR("%s: Failed to set initial pin state (%d)", dev->name, err);  in gpio_aw9523b_pin_configure()
134 	k_sem_give(aw9523b_get_lock(config->mfd_dev));  in gpio_aw9523b_pin_configure()
143  * @param[in]      mask Register mask to select pins to operate.
144  * @param[in,out] value When mode is READ, this param is pointer to result value storing region.
153 	const struct gpio_aw9523b_config *const config = dev->config;  in gpio_aw9523b_port_read_write_toggle()
161 		return -EWOULDBLOCK;  in gpio_aw9523b_port_read_write_toggle()
164 	k_sem_take(aw9523b_get_lock(config->mfd_dev), K_FOREVER);  in gpio_aw9523b_port_read_write_toggle()
168 	 * to keep the internal state correct.  in gpio_aw9523b_port_read_write_toggle()
170 	err = i2c_burst_read_dt(&config->i2c, AW9523B_REG_INPUT0, &buf[0], 1);  in gpio_aw9523b_port_read_write_toggle()
172 		LOG_ERR("%s: Failed to read port0 status (%d)", dev->name, err);  in gpio_aw9523b_port_read_write_toggle()
175 	err = i2c_burst_read_dt(&config->i2c, AW9523B_REG_INPUT1, &buf[1], 1);  in gpio_aw9523b_port_read_write_toggle()
177 		LOG_ERR("%s: Failed to read port1 status (%d)", dev->name, err);  in gpio_aw9523b_port_read_write_toggle()
198 	err = i2c_burst_write_dt(&config->i2c, AW9523B_REG_OUTPUT0, buf, sizeof(buf));  in gpio_aw9523b_port_read_write_toggle()
200 		LOG_ERR("%s: Failed to set port (%d)", dev->name, err);  in gpio_aw9523b_port_read_write_toggle()
204 	k_sem_give(aw9523b_get_lock(config->mfd_dev));  in gpio_aw9523b_port_read_write_toggle()
246 	const struct gpio_aw9523b_config *const config = data->dev->config;  in gpio_aw9523b_interrupt_worker()
252 	 * We need to read INPUT0 to deassert INTN when that is asserted by  in gpio_aw9523b_interrupt_worker()
253 	 * pin0-7 interruption, and same also INPUT1 for pin8-15.  in gpio_aw9523b_interrupt_worker()
254 	 * It cannot deassert by burst-read.  in gpio_aw9523b_interrupt_worker()
256 	err = i2c_burst_read_dt(&config->i2c, AW9523B_REG_INPUT0, &buf[0], 1);  in gpio_aw9523b_interrupt_worker()
258 		LOG_ERR("%s: Failed to read INPUT0 %d", data->dev->name, err);  in gpio_aw9523b_interrupt_worker()
260 	err = i2c_burst_read_dt(&config->i2c, AW9523B_REG_INPUT1, &buf[1], 1);  in gpio_aw9523b_interrupt_worker()
262 		LOG_ERR("%s: Failed to read INPUT1 %d", data->dev->name, err);  in gpio_aw9523b_interrupt_worker()
267 	rising = (value ^ data->prev_value) & (value & data->rising_event_pins);  in gpio_aw9523b_interrupt_worker()
268 	falling = (value ^ data->prev_value) & (~value & data->falling_event_pins);  in gpio_aw9523b_interrupt_worker()
270 	data->prev_value = value;  in gpio_aw9523b_interrupt_worker()
272 	gpio_fire_callbacks(&data->callbacks, data->dev, rising | falling);  in gpio_aw9523b_interrupt_worker()
280 	const struct gpio_aw9523b_config *const config = dev->config;  in gpio_aw9523b_pin_interrupt_configure()
281 	struct gpio_aw9523b_data *const data = dev->data;  in gpio_aw9523b_pin_interrupt_configure()
283 	const uint8_t mask = BIT(port ? pin - 8 : pin);  in gpio_aw9523b_pin_interrupt_configure()
290 		return -EWOULDBLOCK;  in gpio_aw9523b_pin_interrupt_configure()
294 		return -ENOTSUP;  in gpio_aw9523b_pin_interrupt_configure()
296 	if (data->common.invert & BIT(pin)) {  in gpio_aw9523b_pin_interrupt_configure()
297 		WRITE_BIT(data->falling_event_pins, pin, trig & GPIO_INT_HIGH_1);  in gpio_aw9523b_pin_interrupt_configure()
298 		WRITE_BIT(data->rising_event_pins, pin, trig & GPIO_INT_LOW_0);  in gpio_aw9523b_pin_interrupt_configure()
300 		WRITE_BIT(data->falling_event_pins, pin, trig & GPIO_INT_LOW_0);  in gpio_aw9523b_pin_interrupt_configure()
301 		WRITE_BIT(data->rising_event_pins, pin, trig & GPIO_INT_HIGH_1);  in gpio_aw9523b_pin_interrupt_configure()
304 	k_sem_take(aw9523b_get_lock(config->mfd_dev), K_FOREVER);  in gpio_aw9523b_pin_interrupt_configure()
306 	err = i2c_reg_update_byte_dt(&config->i2c, AW9523B_REG_INT(port), mask, n_int_en);  in gpio_aw9523b_pin_interrupt_configure()
308 		LOG_ERR("%s: Failed to configure pin interruption (%d)", dev->name, err);  in gpio_aw9523b_pin_interrupt_configure()
314 		err = i2c_burst_read_dt(&config->i2c, AW9523B_REG_INPUT0, buf, sizeof(buf));  in gpio_aw9523b_pin_interrupt_configure()
316 			LOG_ERR("%s: Failed to read initial pin state (%d)", dev->name, err);  in gpio_aw9523b_pin_interrupt_configure()
320 		WRITE_BIT(data->prev_value, pin, sys_get_le16(buf) & BIT(pin));  in gpio_aw9523b_pin_interrupt_configure()
322 		WRITE_BIT(data->falling_event_pins, pin, 0);  in gpio_aw9523b_pin_interrupt_configure()
323 		WRITE_BIT(data->rising_event_pins, pin, 0);  in gpio_aw9523b_pin_interrupt_configure()
327 	k_sem_give(aw9523b_get_lock(config->mfd_dev));  in gpio_aw9523b_pin_interrupt_configure()
333 						       struct gpio_callback *callback, bool set)  in gpio_aw9523b_manage_callback()  argument
335 	const struct gpio_aw9523b_config *const config = dev->config;  in gpio_aw9523b_manage_callback()
336 	struct gpio_aw9523b_data *const data = dev->data;  in gpio_aw9523b_manage_callback()
339 	k_sem_take(aw9523b_get_lock(config->mfd_dev), K_FOREVER);  in gpio_aw9523b_manage_callback()
341 	err = gpio_manage_callback(&data->callbacks, callback, set);  in gpio_aw9523b_manage_callback()
343 		LOG_ERR("%s: gpio_manage_callback failed (%d)", dev->name, err);  in gpio_aw9523b_manage_callback()
346 	k_sem_give(aw9523b_get_lock(config->mfd_dev));  in gpio_aw9523b_manage_callback()
356 	k_work_submit(&data->intr_worker);  in gpio_aw9523b_int_handler()
374 	const struct gpio_aw9523b_config *const config = dev->config;  in gpio_aw9523b_init()
379 	struct gpio_aw9523b_data *const data = dev->data;  in gpio_aw9523b_init()
381 	if (!config->int_gpio.port) {  in gpio_aw9523b_init()
385 	/* Store self-reference for interrupt handling */  in gpio_aw9523b_init()
386 	data->dev = dev;  in gpio_aw9523b_init()
389 	k_work_init(&data->intr_worker, gpio_aw9523b_interrupt_worker);  in gpio_aw9523b_init()
391 	if (!gpio_is_ready_dt(&config->int_gpio)) {  in gpio_aw9523b_init()
392 		LOG_ERR("%s: Interrupt GPIO not ready", dev->name);  in gpio_aw9523b_init()
393 		return -ENODEV;  in gpio_aw9523b_init()
396 	err = gpio_pin_configure_dt(&config->int_gpio, GPIO_INPUT);  in gpio_aw9523b_init()
398 		LOG_ERR("%s: Failed to configure interrupt pin %d (%d)", dev->name,  in gpio_aw9523b_init()
399 			config->int_gpio.pin, err);  in gpio_aw9523b_init()
403 	err = gpio_pin_interrupt_configure_dt(&config->int_gpio, GPIO_INT_EDGE_TO_ACTIVE);  in gpio_aw9523b_init()
405 		LOG_ERR("%s: Failed to configure interrupt %d (%d)", dev->name,  in gpio_aw9523b_init()
406 			config->int_gpio.pin, err);  in gpio_aw9523b_init()
410 	gpio_init_callback(&data->gpio_callback, config->int_cb, BIT(config->int_gpio.pin));  in gpio_aw9523b_init()
411 	err = gpio_add_callback(config->int_gpio.port, &data->gpio_callback);  in gpio_aw9523b_init()
413 		LOG_ERR("%s: Failed to add interrupt callback for pin %d (%d)", dev->name,  in gpio_aw9523b_init()
414 			config->int_gpio.pin, err);  in gpio_aw9523b_init()
422 	if (!config->reset_gpio.port) {  in gpio_aw9523b_init()
426 	if (!gpio_is_ready_dt(&config->reset_gpio)) {  in gpio_aw9523b_init()
427 		LOG_ERR("%s: Reset GPIO not ready", dev->name);  in gpio_aw9523b_init()
428 		return -ENODEV;  in gpio_aw9523b_init()
431 	err = gpio_pin_configure_dt(&config->reset_gpio, GPIO_OUTPUT_ACTIVE);  in gpio_aw9523b_init()
433 		LOG_ERR("%s: Failed to configure reset pin %d (%d)", dev->name,  in gpio_aw9523b_init()
434 			config->reset_gpio.pin, err);  in gpio_aw9523b_init()
440 	err = gpio_pin_set_dt(&config->reset_gpio, 0);  in gpio_aw9523b_init()
442 		LOG_ERR("%s: Failed to set 0 reset pin %d (%d)", dev->name, config->reset_gpio.pin,  in gpio_aw9523b_init()
450 	if (!device_is_ready(config->i2c.bus)) {  in gpio_aw9523b_init()
451 		return -ENODEV;  in gpio_aw9523b_init()
454 	k_sem_init(aw9523b_get_lock(config->mfd_dev), 1, 1);  in gpio_aw9523b_init()
457 	err = i2c_reg_read_byte_dt(&config->i2c, AW9523B_REG_SW_RSTN, buf);  in gpio_aw9523b_init()
459 		LOG_ERR("%s: Failed to software reset (%d)", dev->name, err);  in gpio_aw9523b_init()
464 	err = i2c_burst_write_dt(&config->i2c, AW9523B_REG_INT0, int_init_data, sizeof(buf));  in gpio_aw9523b_init()
466 		LOG_ERR("%s: Failed to disable all interrupts (%d)", dev->name, err);  in gpio_aw9523b_init()
470 	if (!config->port0_push_pull) {  in gpio_aw9523b_init()
471 		/* Configure port0 to push-pull mode */  in gpio_aw9523b_init()
472 		err = i2c_reg_update_byte_dt(&config->i2c, AW9523B_REG_CTL, AW9523B_GPOMD, 0xFF);  in gpio_aw9523b_init()
474 			LOG_ERR("%s: Failed to configure port0 to push-pull (%d)", dev->name, err);  in gpio_aw9523b_init()