4  * SPDX-License-Identifier: Apache-2.0
21  * The register definitions correspond to those found in the TI TCAN4550-Q1 datasheet, revision D
31 /* Revision register */
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()
340 static inline int tcan4x5x_read_tcan_reg(const struct device *dev, uint16_t reg, uint32_t *val)  in tcan4x5x_read_tcan_reg()  argument
342 	return tcan4x5x_read(dev, reg, val, sizeof(uint32_t));  in tcan4x5x_read_tcan_reg()
345 static inline int tcan4x5x_write_tcan_reg(const struct device *dev, uint16_t reg, uint32_t val)  in tcan4x5x_write_tcan_reg()  argument
347 	return tcan4x5x_write(dev, reg, &val, sizeof(uint32_t));  in tcan4x5x_write_tcan_reg()
350 static int tcan4x5x_read_mcan_reg(const struct device *dev, uint16_t reg, uint32_t *val)  in tcan4x5x_read_mcan_reg()  argument
352 	return tcan4x5x_read(dev, CAN_TCAN4X5X_MCAN_BASE + reg, val, sizeof(uint32_t));  in tcan4x5x_read_mcan_reg()
355 static int tcan4x5x_write_mcan_reg(const struct device *dev, uint16_t reg, uint32_t val)  in tcan4x5x_write_mcan_reg()  argument
357 	return tcan4x5x_write(dev, CAN_TCAN4X5X_MCAN_BASE + reg, &val, sizeof(uint32_t));  in tcan4x5x_write_mcan_reg()
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()
511 	const struct can_mcan_config *mcan_config = dev->config;  in tcan4x5x_reset()
512 	const struct tcan4x5x_config *tcan_config = mcan_config->custom;  in tcan4x5x_reset()
521 	if (tcan_config->rst_gpio.port != NULL) {  in tcan4x5x_reset()
522 		err = gpio_pin_set_dt(&tcan_config->rst_gpio, 1);  in tcan4x5x_reset()
530 		err = gpio_pin_set_dt(&tcan_config->rst_gpio, 0);  in tcan4x5x_reset()
554 	const struct can_mcan_config *mcan_config = dev->config;  in tcan4x5x_init()
555 	const struct tcan4x5x_config *tcan_config = mcan_config->custom;  in tcan4x5x_init()
556 	struct can_mcan_data *mcan_data = dev->data;  in tcan4x5x_init()
557 	struct tcan4x5x_data *tcan_data = mcan_data->custom;  in tcan4x5x_init()
559 	uint32_t reg;  in tcan4x5x_init()  local
563 	k_sem_init(&tcan_data->int_sem, 1, 1);  in tcan4x5x_init()
565 	if (!spi_is_ready_dt(&tcan_config->spi)) {  in tcan4x5x_init()
567 		return -ENODEV;  in tcan4x5x_init()
571 	if (tcan_config->rst_gpio.port != NULL) {  in tcan4x5x_init()
572 		if (!gpio_is_ready_dt(&tcan_config->rst_gpio)) {  in tcan4x5x_init()
574 			return -ENODEV;  in tcan4x5x_init()
577 		err = gpio_pin_configure_dt(&tcan_config->rst_gpio, GPIO_OUTPUT_INACTIVE);  in tcan4x5x_init()
580 			return -ENODEV;  in tcan4x5x_init()
586 	if (tcan_config->nwkrq_gpio.port != NULL) {  in tcan4x5x_init()
587 		if (!gpio_is_ready_dt(&tcan_config->nwkrq_gpio)) {  in tcan4x5x_init()
589 			return -ENODEV;  in tcan4x5x_init()
592 		err = gpio_pin_configure_dt(&tcan_config->nwkrq_gpio, GPIO_INPUT);  in tcan4x5x_init()
595 			return -ENODEV;  in tcan4x5x_init()
601 	if (tcan_config->wake_gpio.port != NULL) {  in tcan4x5x_init()
602 		if (!gpio_is_ready_dt(&tcan_config->wake_gpio)) {  in tcan4x5x_init()
604 			return -ENODEV;  in tcan4x5x_init()
607 		err = gpio_pin_configure_dt(&tcan_config->wake_gpio, GPIO_OUTPUT_INACTIVE);  in tcan4x5x_init()
610 			return -ENODEV;  in tcan4x5x_init()
615 	if (!gpio_is_ready_dt(&tcan_config->int_gpio)) {  in tcan4x5x_init()
617 		return -ENODEV;  in tcan4x5x_init()
620 	err = gpio_pin_configure_dt(&tcan_config->int_gpio, GPIO_INPUT);  in tcan4x5x_init()
623 		return -ENODEV;  in tcan4x5x_init()
626 	gpio_init_callback(&tcan_data->int_gpio_cb, tcan4x5x_int_gpio_callback_handler,  in tcan4x5x_init()
627 			   BIT(tcan_config->int_gpio.pin));  in tcan4x5x_init()
629 	err = gpio_add_callback_dt(&tcan_config->int_gpio, &tcan_data->int_gpio_cb);  in tcan4x5x_init()
632 		return -ENODEV;  in tcan4x5x_init()
636 	err = gpio_pin_interrupt_configure_dt(&tcan_config->int_gpio, GPIO_INT_EDGE_TO_ACTIVE);  in tcan4x5x_init()
639 		return -ENODEV;  in tcan4x5x_init()
642 	tid = k_thread_create(&tcan_data->int_thread, tcan_data->int_stack,  in tcan4x5x_init()
643 			      K_KERNEL_STACK_SIZEOF(tcan_data->int_stack),  in tcan4x5x_init()
651 		return -ENODEV;  in tcan4x5x_init()
657 	/* Read DEVICE_ID1, DEVICE_ID2, and REVISION registers */  in tcan4x5x_init()
660 		return -EIO;  in tcan4x5x_init()
673 	err = tcan4x5x_read_tcan_reg(dev, CAN_TCAN4X5X_MODE_CONFIG, &reg);  in tcan4x5x_init()
676 		return -ENODEV;  in tcan4x5x_init()
679 	reg &= ~(CAN_TCAN4X5X_MODE_CONFIG_MODE_SEL);  in tcan4x5x_init()
680 	reg |= FIELD_PREP(CAN_TCAN4X5X_MODE_CONFIG_MODE_SEL, 0x02);  in tcan4x5x_init()
681 	reg |= CAN_TCAN4X5X_MODE_CONFIG_WAKE_CONFIG;  in tcan4x5x_init()
683 	if (tcan_config->clk_freq == MHZ(20)) {  in tcan4x5x_init()
685 		reg &= ~(CAN_TCAN4X5X_MODE_CONFIG_CLK_REF);  in tcan4x5x_init()
688 		reg |= CAN_TCAN4X5X_MODE_CONFIG_CLK_REF;  in tcan4x5x_init()
691 	err = tcan4x5x_write_tcan_reg(dev, CAN_TCAN4X5X_MODE_CONFIG, reg);  in tcan4x5x_init()
694 		return -ENODEV;  in tcan4x5x_init()
703 		return -EIO;  in tcan4x5x_init()