4  * SPDX-License-Identifier: Apache-2.0
21  * The register definitions correspond to those found in the TI TCAN4550-Q1 datasheet, revision D
209  * Only compile in support for the optional GPIOs if at least one enabled tcan4x5x device tree node
241 	const struct can_mcan_config *mcan_config = dev->config;  in tcan4x5x_read()
242 	const struct tcan4x5x_config *tcan_config = mcan_config->custom;  in tcan4x5x_read()
271 	/* Maximum transfer size is 256 32-bit words */  in tcan4x5x_read()
275 	err = spi_transceive_dt(&tcan_config->spi, &tx, &rx);  in tcan4x5x_read()
292 	const struct can_mcan_config *mcan_config = dev->config;  in tcan4x5x_write()
293 	const struct tcan4x5x_config *tcan_config = mcan_config->custom;  in tcan4x5x_write()
321 	/* Maximum transfer size is 256 32-bit words */  in tcan4x5x_write()
329 	err = spi_transceive_dt(&tcan_config->spi, &tx, &rx);  in tcan4x5x_write()
379 		pending = MIN(len - upto, sizeof(buf));  in tcan4x5x_clear_mcan_mram()
395 	const struct can_mcan_config *mcan_config = dev->config;  in tcan4x5x_get_core_clock()
396 	const struct tcan4x5x_config *tcan_config = mcan_config->custom;  in tcan4x5x_get_core_clock()
398 	*rate = tcan_config->clk_freq;  in tcan4x5x_get_core_clock()
408 	k_sem_give(&tcan_data->int_sem);  in tcan4x5x_int_gpio_callback_handler()
417 	struct can_mcan_data *mcan_data = dev->data;  in tcan4x5x_int_thread()
418 	struct tcan4x5x_data *tcan_data = mcan_data->custom;  in tcan4x5x_int_thread()
424 		k_sem_take(&tcan_data->int_sem, K_FOREVER);  in tcan4x5x_int_thread()
474 	const struct can_mcan_config *mcan_config = dev->config;  in tcan4x5x_wake()
475 	const struct tcan4x5x_config *tcan_config = mcan_config->custom;  in tcan4x5x_wake()
480 	if (tcan_config->wake_gpio.port != NULL && tcan_config->nwkrq_gpio.port != NULL) {  in tcan4x5x_wake()
481 		wake_needed = gpio_pin_get_dt(&tcan_config->nwkrq_gpio);  in tcan4x5x_wake()
489 	if (tcan_config->wake_gpio.port != NULL && wake_needed != 0) {  in tcan4x5x_wake()
490 		err = gpio_pin_set_dt(&tcan_config->wake_gpio, 1);  in tcan4x5x_wake()
498 		err = gpio_pin_set_dt(&tcan_config->wake_gpio, 0);  in tcan4x5x_wake()
512 	const struct can_mcan_config *mcan_config = dev->config;  in tcan4x5x_reset()
513 	const struct tcan4x5x_config *tcan_config = mcan_config->custom;  in tcan4x5x_reset()
523 	if (tcan_config->rst_gpio.port != NULL) {  in tcan4x5x_reset()
524 		err = gpio_pin_set_dt(&tcan_config->rst_gpio, 1);  in tcan4x5x_reset()
532 		err = gpio_pin_set_dt(&tcan_config->rst_gpio, 0);  in tcan4x5x_reset()
556 	const struct can_mcan_config *mcan_config = dev->config;  in tcan4x5x_init()
557 	const struct tcan4x5x_config *tcan_config = mcan_config->custom;  in tcan4x5x_init()
558 	struct can_mcan_data *mcan_data = dev->data;  in tcan4x5x_init()
559 	struct tcan4x5x_data *tcan_data = mcan_data->custom;  in tcan4x5x_init()
565 	k_sem_init(&tcan_data->int_sem, 1, 1);  in tcan4x5x_init()
567 	if (!spi_is_ready_dt(&tcan_config->spi)) {  in tcan4x5x_init()
569 		return -ENODEV;  in tcan4x5x_init()
573 	if (tcan_config->rst_gpio.port != NULL) {  in tcan4x5x_init()
574 		if (!gpio_is_ready_dt(&tcan_config->rst_gpio)) {  in tcan4x5x_init()
576 			return -ENODEV;  in tcan4x5x_init()
579 		err = gpio_pin_configure_dt(&tcan_config->rst_gpio, GPIO_OUTPUT_INACTIVE);  in tcan4x5x_init()
582 			return -ENODEV;  in tcan4x5x_init()
588 	if (tcan_config->nwkrq_gpio.port != NULL) {  in tcan4x5x_init()
589 		if (!gpio_is_ready_dt(&tcan_config->nwkrq_gpio)) {  in tcan4x5x_init()
591 			return -ENODEV;  in tcan4x5x_init()
594 		err = gpio_pin_configure_dt(&tcan_config->nwkrq_gpio, GPIO_INPUT);  in tcan4x5x_init()
597 			return -ENODEV;  in tcan4x5x_init()
603 	if (tcan_config->wake_gpio.port != NULL) {  in tcan4x5x_init()
604 		if (!gpio_is_ready_dt(&tcan_config->wake_gpio)) {  in tcan4x5x_init()
606 			return -ENODEV;  in tcan4x5x_init()
609 		err = gpio_pin_configure_dt(&tcan_config->wake_gpio, GPIO_OUTPUT_INACTIVE);  in tcan4x5x_init()
612 			return -ENODEV;  in tcan4x5x_init()
617 	if (!gpio_is_ready_dt(&tcan_config->int_gpio)) {  in tcan4x5x_init()
618 		LOG_ERR("nINT GPIO not ready");  in tcan4x5x_init()
619 		return -ENODEV;  in tcan4x5x_init()
622 	err = gpio_pin_configure_dt(&tcan_config->int_gpio, GPIO_INPUT);  in tcan4x5x_init()
624 		LOG_ERR("failed to configure nINT GPIO (err %d)", err);  in tcan4x5x_init()
625 		return -ENODEV;  in tcan4x5x_init()
628 	gpio_init_callback(&tcan_data->int_gpio_cb, tcan4x5x_int_gpio_callback_handler,  in tcan4x5x_init()
629 			   BIT(tcan_config->int_gpio.pin));  in tcan4x5x_init()
631 	err = gpio_add_callback_dt(&tcan_config->int_gpio, &tcan_data->int_gpio_cb);  in tcan4x5x_init()
633 		LOG_ERR("failed to add nINT GPIO callback (err %d)", err);  in tcan4x5x_init()
634 		return -ENODEV;  in tcan4x5x_init()
637 	/* Initialize nINT GPIO callback and interrupt handler thread to ACK any early SPIERR */  in tcan4x5x_init()
638 	err = gpio_pin_interrupt_configure_dt(&tcan_config->int_gpio, GPIO_INT_EDGE_TO_ACTIVE);  in tcan4x5x_init()
640 		LOG_ERR("failed to configure nINT GPIO interrupt (err %d)", err);  in tcan4x5x_init()
641 		return -ENODEV;  in tcan4x5x_init()
644 	tid = k_thread_create(&tcan_data->int_thread, tcan_data->int_stack,  in tcan4x5x_init()
645 			      K_KERNEL_STACK_SIZEOF(tcan_data->int_stack),  in tcan4x5x_init()
653 		return -ENODEV;  in tcan4x5x_init()
662 		return -EIO;  in tcan4x5x_init()
678 		return -ENODEV;  in tcan4x5x_init()
685 	if (tcan_config->clk_freq == MHZ(20)) {  in tcan4x5x_init()
696 		return -ENODEV;  in tcan4x5x_init()
705 		return -EIO;  in tcan4x5x_init()