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()
413 	struct can_mcan_data *mcan_data = dev->data;  in tcan4x5x_int_thread()
414 	struct tcan4x5x_data *tcan_data = mcan_data->custom;  in tcan4x5x_int_thread()
420 		k_sem_take(&tcan_data->int_sem, K_FOREVER);  in tcan4x5x_int_thread()
470 	const struct can_mcan_config *mcan_config = dev->config;  in tcan4x5x_wake()
471 	const struct tcan4x5x_config *tcan_config = mcan_config->custom;  in tcan4x5x_wake()
476 	if (tcan_config->wake_gpio.port != NULL && tcan_config->nwkrq_gpio.port != NULL) {  in tcan4x5x_wake()
477 		wake_needed = gpio_pin_get_dt(&tcan_config->nwkrq_gpio);  in tcan4x5x_wake()
485 	if (tcan_config->wake_gpio.port != NULL && wake_needed != 0) {  in tcan4x5x_wake()
486 		err = gpio_pin_set_dt(&tcan_config->wake_gpio, 1);  in tcan4x5x_wake()
494 		err = gpio_pin_set_dt(&tcan_config->wake_gpio, 0);  in tcan4x5x_wake()
507 	const struct can_mcan_config *mcan_config = dev->config;  in tcan4x5x_reset()
508 	const struct tcan4x5x_config *tcan_config = mcan_config->custom;  in tcan4x5x_reset()
517 	if (tcan_config->rst_gpio.port != NULL) {  in tcan4x5x_reset()
518 		err = gpio_pin_set_dt(&tcan_config->rst_gpio, 1);  in tcan4x5x_reset()
526 		err = gpio_pin_set_dt(&tcan_config->rst_gpio, 0);  in tcan4x5x_reset()
550 	const struct can_mcan_config *mcan_config = dev->config;  in tcan4x5x_init()
551 	const struct tcan4x5x_config *tcan_config = mcan_config->custom;  in tcan4x5x_init()
552 	struct can_mcan_data *mcan_data = dev->data;  in tcan4x5x_init()
553 	struct tcan4x5x_data *tcan_data = mcan_data->custom;  in tcan4x5x_init()
559 	k_sem_init(&tcan_data->int_sem, 1, 1);  in tcan4x5x_init()
561 	if (!spi_is_ready_dt(&tcan_config->spi)) {  in tcan4x5x_init()
563 		return -ENODEV;  in tcan4x5x_init()
567 	if (tcan_config->rst_gpio.port != NULL) {  in tcan4x5x_init()
568 		if (!gpio_is_ready_dt(&tcan_config->rst_gpio)) {  in tcan4x5x_init()
570 			return -ENODEV;  in tcan4x5x_init()
573 		err = gpio_pin_configure_dt(&tcan_config->rst_gpio, GPIO_OUTPUT_INACTIVE);  in tcan4x5x_init()
576 			return -ENODEV;  in tcan4x5x_init()
582 	if (tcan_config->nwkrq_gpio.port != NULL) {  in tcan4x5x_init()
583 		if (!gpio_is_ready_dt(&tcan_config->nwkrq_gpio)) {  in tcan4x5x_init()
585 			return -ENODEV;  in tcan4x5x_init()
588 		err = gpio_pin_configure_dt(&tcan_config->nwkrq_gpio, GPIO_INPUT);  in tcan4x5x_init()
591 			return -ENODEV;  in tcan4x5x_init()
597 	if (tcan_config->wake_gpio.port != NULL) {  in tcan4x5x_init()
598 		if (!gpio_is_ready_dt(&tcan_config->wake_gpio)) {  in tcan4x5x_init()
600 			return -ENODEV;  in tcan4x5x_init()
603 		err = gpio_pin_configure_dt(&tcan_config->wake_gpio, GPIO_OUTPUT_INACTIVE);  in tcan4x5x_init()
606 			return -ENODEV;  in tcan4x5x_init()
611 	if (!gpio_is_ready_dt(&tcan_config->int_gpio)) {  in tcan4x5x_init()
612 		LOG_ERR("nINT GPIO not ready");  in tcan4x5x_init()
613 		return -ENODEV;  in tcan4x5x_init()
616 	err = gpio_pin_configure_dt(&tcan_config->int_gpio, GPIO_INPUT);  in tcan4x5x_init()
618 		LOG_ERR("failed to configure nINT GPIO (err %d)", err);  in tcan4x5x_init()
619 		return -ENODEV;  in tcan4x5x_init()
622 	gpio_init_callback(&tcan_data->int_gpio_cb, tcan4x5x_int_gpio_callback_handler,  in tcan4x5x_init()
623 			   BIT(tcan_config->int_gpio.pin));  in tcan4x5x_init()
625 	err = gpio_add_callback_dt(&tcan_config->int_gpio, &tcan_data->int_gpio_cb);  in tcan4x5x_init()
627 		LOG_ERR("failed to add nINT GPIO callback (err %d)", err);  in tcan4x5x_init()
628 		return -ENODEV;  in tcan4x5x_init()
631 	/* Initialize nINT GPIO callback and interrupt handler thread to ACK any early SPIERR */  in tcan4x5x_init()
632 	err = gpio_pin_interrupt_configure_dt(&tcan_config->int_gpio, GPIO_INT_EDGE_TO_ACTIVE);  in tcan4x5x_init()
634 		LOG_ERR("failed to configure nINT GPIO interrupt (err %d)", err);  in tcan4x5x_init()
635 		return -ENODEV;  in tcan4x5x_init()
638 	tid = k_thread_create(&tcan_data->int_thread, tcan_data->int_stack,  in tcan4x5x_init()
639 			      K_KERNEL_STACK_SIZEOF(tcan_data->int_stack),  in tcan4x5x_init()
647 		return -ENODEV;  in tcan4x5x_init()
656 		return -EIO;  in tcan4x5x_init()
672 		return -ENODEV;  in tcan4x5x_init()
679 	if (tcan_config->clk_freq == MHZ(20)) {  in tcan4x5x_init()
690 		return -ENODEV;  in tcan4x5x_init()
699 		return -EIO;  in tcan4x5x_init()