176 	int err;  in mcp251xfd_clks_and_vdd_enable()  local
178 	err = clk_prepare_enable(priv->clk);  in mcp251xfd_clks_and_vdd_enable()
179 	if (err)  in mcp251xfd_clks_and_vdd_enable()
180 		return err;  in mcp251xfd_clks_and_vdd_enable()
182 	err = mcp251xfd_vdd_enable(priv);  in mcp251xfd_clks_and_vdd_enable()
183 	if (err)  in mcp251xfd_clks_and_vdd_enable()
190 	return err;  in mcp251xfd_clks_and_vdd_enable()
195 	int err;  in mcp251xfd_clks_and_vdd_disable()  local
197 	err = mcp251xfd_vdd_disable(priv);  in mcp251xfd_clks_and_vdd_disable()
198 	if (err)  in mcp251xfd_clks_and_vdd_disable()
199 		return err;  in mcp251xfd_clks_and_vdd_disable()
215 	int err;  in mcp251xfd_chip_get_mode()  local
217 	err = regmap_read(priv->map_reg, MCP251XFD_REG_CON, &val);  in mcp251xfd_chip_get_mode()
218 	if (err)  in mcp251xfd_chip_get_mode()
219 		return err;  in mcp251xfd_chip_get_mode()
234 	int err;  in __mcp251xfd_chip_set_mode()  local
237 	err = regmap_update_bits(priv->map_reg, MCP251XFD_REG_CON,  in __mcp251xfd_chip_set_mode()
239 	if (err == -EBADMSG) {  in __mcp251xfd_chip_set_mode()
244 	} else if (err) {  in __mcp251xfd_chip_set_mode()
245 		return err;  in __mcp251xfd_chip_set_mode()
256 	err = regmap_read_poll_timeout(priv->map_reg, MCP251XFD_REG_CON, con,  in __mcp251xfd_chip_set_mode()
261 	if (err != -ETIMEDOUT && err != -EBADMSG)  in __mcp251xfd_chip_set_mode()
262 		return err;  in __mcp251xfd_chip_set_mode()
306 	int err;  in mcp251xfd_chip_wait_for_osc_ready()  local
308 	err = regmap_read_poll_timeout(priv->map_reg, MCP251XFD_REG_OSC, osc,  in mcp251xfd_chip_wait_for_osc_ready()
313 	if (err != -ETIMEDOUT)  in mcp251xfd_chip_wait_for_osc_ready()
314 		return err;  in mcp251xfd_chip_wait_for_osc_ready()
334 	int err;  in mcp251xfd_chip_wake()  local
356 	err = regmap_write(priv->map_reg, MCP251XFD_REG_OSC, osc);  in mcp251xfd_chip_wake()
357 	if (err)  in mcp251xfd_chip_wake()
358 		return err;  in mcp251xfd_chip_wake()
371 		int err;  in mcp251xfd_chip_sleep()  local
376 		err = regmap_write(priv->map_reg, MCP251XFD_REG_OSC, osc);  in mcp251xfd_chip_sleep()
377 		if (err)  in mcp251xfd_chip_sleep()
390 	int err;  in mcp251xfd_chip_softreset_do()  local
395 	err = mcp251xfd_chip_wake(priv);  in mcp251xfd_chip_softreset_do()
396 	if (err)  in mcp251xfd_chip_softreset_do()
397 		return err;  in mcp251xfd_chip_softreset_do()
399 	err = mcp251xfd_chip_set_mode(priv, MCP251XFD_REG_CON_MODE_CONFIG);  in mcp251xfd_chip_softreset_do()
400 	if (err)  in mcp251xfd_chip_softreset_do()
401 		return err;  in mcp251xfd_chip_softreset_do()
411 	int err;  in mcp251xfd_chip_softreset_check()  local
420 	err = mcp251xfd_chip_wait_for_osc_ready(priv, osc_reference, osc_mask);  in mcp251xfd_chip_softreset_check()
421 	if (err)  in mcp251xfd_chip_softreset_check()
422 		return err;  in mcp251xfd_chip_softreset_check()
424 	err = mcp251xfd_chip_get_mode(priv, &mode);  in mcp251xfd_chip_softreset_check()
425 	if (err)  in mcp251xfd_chip_softreset_check()
426 		return err;  in mcp251xfd_chip_softreset_check()
440 	int err, i;  in mcp251xfd_chip_softreset()  local
447 		err = mcp251xfd_chip_softreset_do(priv);  in mcp251xfd_chip_softreset()
448 		if (err == -ETIMEDOUT)  in mcp251xfd_chip_softreset()
450 		if (err)  in mcp251xfd_chip_softreset()
451 			return err;  in mcp251xfd_chip_softreset()
453 		err = mcp251xfd_chip_softreset_check(priv);  in mcp251xfd_chip_softreset()
454 		if (err == -ETIMEDOUT)  in mcp251xfd_chip_softreset()
456 		if (err)  in mcp251xfd_chip_softreset()
457 			return err;  in mcp251xfd_chip_softreset()
462 	return err;  in mcp251xfd_chip_softreset()
468 	int err;  in mcp251xfd_chip_clock_init()  local
485 	err = regmap_write(priv->map_reg, MCP251XFD_REG_OSC, osc);  in mcp251xfd_chip_clock_init()
486 	if (err)  in mcp251xfd_chip_clock_init()
487 		return err;  in mcp251xfd_chip_clock_init()
489 	err = mcp251xfd_chip_wait_for_osc_ready(priv, osc_reference, osc_mask);  in mcp251xfd_chip_clock_init()
490 	if (err)  in mcp251xfd_chip_clock_init()
491 		return err;  in mcp251xfd_chip_clock_init()
515 	int err;  in mcp251xfd_set_bittiming()  local
546 	err = regmap_write(priv->map_reg, MCP251XFD_REG_CON, val);  in mcp251xfd_set_bittiming()
547 	if (err)  in mcp251xfd_set_bittiming()
548 		return err;  in mcp251xfd_set_bittiming()
558 	err = regmap_write(priv->map_reg, MCP251XFD_REG_NBTCFG, val);  in mcp251xfd_set_bittiming()
559 	if (err)  in mcp251xfd_set_bittiming()
560 		return err;  in mcp251xfd_set_bittiming()
573 	err = regmap_write(priv->map_reg, MCP251XFD_REG_DBTCFG, val);  in mcp251xfd_set_bittiming()
574 	if (err)  in mcp251xfd_set_bittiming()
575 		return err;  in mcp251xfd_set_bittiming()
629 	int err;  in mcp251xfd_chip_ecc_init()  local
636 	err = regmap_update_bits(priv->map_reg, MCP251XFD_REG_ECCCON,  in mcp251xfd_chip_ecc_init()
638 	if (err)  in mcp251xfd_chip_ecc_init()
639 		return err;  in mcp251xfd_chip_ecc_init()
645 	err = regmap_raw_write(priv->map_reg, MCP251XFD_RAM_START, ram,  in mcp251xfd_chip_ecc_init()
649 	return err;  in mcp251xfd_chip_ecc_init()
694 	int err;  in mcp251xfd_chip_interrupts_enable()  local
697 	err = regmap_write(priv->map_reg, MCP251XFD_REG_CRC, val);  in mcp251xfd_chip_interrupts_enable()
698 	if (err)  in mcp251xfd_chip_interrupts_enable()
699 		return err;  in mcp251xfd_chip_interrupts_enable()
702 	err = regmap_update_bits(priv->map_reg, MCP251XFD_REG_ECCCON, val, val);  in mcp251xfd_chip_interrupts_enable()
703 	if (err)  in mcp251xfd_chip_interrupts_enable()
704 		return err;  in mcp251xfd_chip_interrupts_enable()
724 	int err;  in mcp251xfd_chip_interrupts_disable()  local
727 	err = regmap_write(priv->map_reg, MCP251XFD_REG_INT, 0);  in mcp251xfd_chip_interrupts_disable()
728 	if (err)  in mcp251xfd_chip_interrupts_disable()
729 		return err;  in mcp251xfd_chip_interrupts_disable()
732 	err = regmap_update_bits(priv->map_reg, MCP251XFD_REG_ECCCON,  in mcp251xfd_chip_interrupts_disable()
734 	if (err)  in mcp251xfd_chip_interrupts_disable()
735 		return err;  in mcp251xfd_chip_interrupts_disable()
752 	int err;  in mcp251xfd_chip_start()  local
754 	err = mcp251xfd_chip_softreset(priv);  in mcp251xfd_chip_start()
755 	if (err)  in mcp251xfd_chip_start()
758 	err = mcp251xfd_chip_clock_init(priv);  in mcp251xfd_chip_start()
759 	if (err)  in mcp251xfd_chip_start()
762 	err = mcp251xfd_chip_timestamp_init(priv);  in mcp251xfd_chip_start()
763 	if (err)  in mcp251xfd_chip_start()
766 	err = mcp251xfd_set_bittiming(priv);  in mcp251xfd_chip_start()
767 	if (err)  in mcp251xfd_chip_start()
770 	err = mcp251xfd_chip_rx_int_enable(priv);  in mcp251xfd_chip_start()
771 	if (err)  in mcp251xfd_chip_start()
774 	err = mcp251xfd_chip_ecc_init(priv);  in mcp251xfd_chip_start()
775 	if (err)  in mcp251xfd_chip_start()
778 	err = mcp251xfd_ring_init(priv);  in mcp251xfd_chip_start()
779 	if (err)  in mcp251xfd_chip_start()
782 	err = mcp251xfd_chip_fifo_init(priv);  in mcp251xfd_chip_start()
783 	if (err)  in mcp251xfd_chip_start()
788 	err = mcp251xfd_chip_set_normal_mode(priv);  in mcp251xfd_chip_start()
789 	if (err)  in mcp251xfd_chip_start()
798 	return err;  in mcp251xfd_chip_start()
804 	int err;  in mcp251xfd_set_mode()  local
808 		err = mcp251xfd_chip_start(priv);  in mcp251xfd_set_mode()
809 		if (err)  in mcp251xfd_set_mode()
810 			return err;  in mcp251xfd_set_mode()
812 		err = mcp251xfd_chip_interrupts_enable(priv);  in mcp251xfd_set_mode()
813 		if (err) {  in mcp251xfd_set_mode()
815 			return err;  in mcp251xfd_set_mode()
833 	int err;  in __mcp251xfd_get_berr_counter()  local
835 	err = regmap_read(priv->map_reg, MCP251XFD_REG_TREC, &trec);  in __mcp251xfd_get_berr_counter()
836 	if (err)  in __mcp251xfd_get_berr_counter()
837 		return err;  in __mcp251xfd_get_berr_counter()
873 	int err;  in mcp251xfd_alloc_can_err_skb()  local
875 	err = mcp251xfd_get_timestamp(priv, timestamp);  in mcp251xfd_alloc_can_err_skb()
876 	if (err)  in mcp251xfd_alloc_can_err_skb()
893 	int err, i;  in mcp251xfd_handle_rxovif()  local
898 	err = regmap_read(priv->map_reg, MCP251XFD_REG_RXOVIF, &rxovif);  in mcp251xfd_handle_rxovif()
899 	if (err)  in mcp251xfd_handle_rxovif()
900 		return err;  in mcp251xfd_handle_rxovif()
919 		err = regmap_update_bits(priv->map_reg,  in mcp251xfd_handle_rxovif()
923 		if (err)  in mcp251xfd_handle_rxovif()
924 			return err;  in mcp251xfd_handle_rxovif()
934 	err = can_rx_offload_queue_timestamp(&priv->offload, skb, timestamp);  in mcp251xfd_handle_rxovif()
935 	if (err)  in mcp251xfd_handle_rxovif()
954 	int err;  in mcp251xfd_handle_ivmif()  local
956 	err = mcp251xfd_get_timestamp(priv, &timestamp);  in mcp251xfd_handle_ivmif()
957 	if (err)  in mcp251xfd_handle_ivmif()
958 		return err;  in mcp251xfd_handle_ivmif()
960 	err = regmap_read(priv->map_reg, MCP251XFD_REG_BDIAG1, &bdiag1);  in mcp251xfd_handle_ivmif()
961 	if (err)  in mcp251xfd_handle_ivmif()
962 		return err;  in mcp251xfd_handle_ivmif()
967 	err = regmap_write(priv->map_reg, MCP251XFD_REG_BDIAG1, 0x0);  in mcp251xfd_handle_ivmif()
968 	if (err)  in mcp251xfd_handle_ivmif()
969 		return err;  in mcp251xfd_handle_ivmif()
1039 	err = can_rx_offload_queue_timestamp(&priv->offload, skb, timestamp);  in mcp251xfd_handle_ivmif()
1040 	if (err)  in mcp251xfd_handle_ivmif()
1053 	int err;  in mcp251xfd_handle_cerrif()  local
1055 	err = regmap_read(priv->map_reg, MCP251XFD_REG_TREC, &trec);  in mcp251xfd_handle_cerrif()
1056 	if (err)  in mcp251xfd_handle_cerrif()
1057 		return err;  in mcp251xfd_handle_cerrif()
1091 		err = __mcp251xfd_get_berr_counter(priv->ndev, &priv->bec);  in mcp251xfd_handle_cerrif()
1092 		if (err)  in mcp251xfd_handle_cerrif()
1093 			return err;  in mcp251xfd_handle_cerrif()
1105 		err = mcp251xfd_get_berr_counter(priv->ndev, &bec);  in mcp251xfd_handle_cerrif()
1106 		if (err)  in mcp251xfd_handle_cerrif()
1107 			return err;  in mcp251xfd_handle_cerrif()
1113 	err = can_rx_offload_queue_timestamp(&priv->offload, skb, timestamp);  in mcp251xfd_handle_cerrif()
1114 	if (err)  in mcp251xfd_handle_cerrif()
1125 	int err;  in mcp251xfd_handle_modif()  local
1127 	err = mcp251xfd_chip_get_mode(priv, &mode);  in mcp251xfd_handle_modif()
1128 	if (err)  in mcp251xfd_handle_modif()
1129 		return err;  in mcp251xfd_handle_modif()
1261 	int err;  in mcp251xfd_handle_eccif_recover()  local
1265 	err = mcp251xfd_tx_tail_get_from_chip(priv, &chip_tx_tail);  in mcp251xfd_handle_eccif_recover()
1266 	if (err)  in mcp251xfd_handle_eccif_recover()
1267 		return err;  in mcp251xfd_handle_eccif_recover()
1295 	err = spi_sync_transfer(priv->spi, tx_obj->xfer, 1);  in mcp251xfd_handle_eccif_recover()
1296 	if (err)  in mcp251xfd_handle_eccif_recover()
1297 		return err;  in mcp251xfd_handle_eccif_recover()
1312 	int err;  in mcp251xfd_handle_eccif()  local
1314 	err = regmap_read(priv->map_reg, MCP251XFD_REG_ECCSTAT, &ecc_stat);  in mcp251xfd_handle_eccif()
1315 	if (err)  in mcp251xfd_handle_eccif()
1316 		return err;  in mcp251xfd_handle_eccif()
1318 	err = regmap_update_bits(priv->map_reg, MCP251XFD_REG_ECCSTAT,  in mcp251xfd_handle_eccif()
1320 	if (err)  in mcp251xfd_handle_eccif()
1321 		return err;  in mcp251xfd_handle_eccif()
1325 	err = mcp251xfd_get_tx_nr_by_addr(priv->tx, &nr, addr);  in mcp251xfd_handle_eccif()
1326 	if (!err)  in mcp251xfd_handle_eccif()
1328 	else if (err == -ENOENT)  in mcp251xfd_handle_eccif()
1331 		return err;  in mcp251xfd_handle_eccif()
1381 	int err;  in mcp251xfd_handle_spicrcif()  local
1384 	err = regmap_read(priv->map_reg, MCP251XFD_REG_CRC, &crc);  in mcp251xfd_handle_spicrcif()
1385 	if (err)  in mcp251xfd_handle_spicrcif()
1386 		return err;  in mcp251xfd_handle_spicrcif()
1388 	err = regmap_update_bits(priv->map_reg, MCP251XFD_REG_CRC,  in mcp251xfd_handle_spicrcif()
1391 	if (err)  in mcp251xfd_handle_spicrcif()
1392 		return err;  in mcp251xfd_handle_spicrcif()
1421 	int err; \
1423 	err = mcp251xfd_handle_##irq(_priv, ## __VA_ARGS__); \
1424 	if (err) \
1427 			__stringify(irq), err); \
1428 	err; \
1435 	int err;  in mcp251xfd_irq()  local
1450 			err = mcp251xfd_handle(priv, rxif);  in mcp251xfd_irq()
1451 			if (err)  in mcp251xfd_irq()
1466 		err = mcp251xfd_read_regs_status(priv);  in mcp251xfd_irq()
1467 		if (err)  in mcp251xfd_irq()
1491 			err = regmap_update_bits(priv->map_reg,  in mcp251xfd_irq()
1495 			if (err)  in mcp251xfd_irq()
1500 			err = mcp251xfd_handle(priv, modif, &set_normal_mode);  in mcp251xfd_irq()
1501 			if (err)  in mcp251xfd_irq()
1506 			err = mcp251xfd_handle(priv, rxif);  in mcp251xfd_irq()
1507 			if (err)  in mcp251xfd_irq()
1512 			err = mcp251xfd_handle(priv, tefif);  in mcp251xfd_irq()
1513 			if (err)  in mcp251xfd_irq()
1518 			err = mcp251xfd_handle(priv, rxovif);  in mcp251xfd_irq()
1519 			if (err)  in mcp251xfd_irq()
1524 			err = mcp251xfd_handle(priv, txatif);  in mcp251xfd_irq()
1525 			if (err)  in mcp251xfd_irq()
1530 			err = mcp251xfd_handle(priv, ivmif);  in mcp251xfd_irq()
1531 			if (err)  in mcp251xfd_irq()
1536 			err = mcp251xfd_handle(priv, serrif);  in mcp251xfd_irq()
1537 			if (err)  in mcp251xfd_irq()
1542 			err = mcp251xfd_handle(priv, eccif, set_normal_mode);  in mcp251xfd_irq()
1543 			if (err)  in mcp251xfd_irq()
1548 			err = mcp251xfd_handle(priv, spicrcif);  in mcp251xfd_irq()
1549 			if (err)  in mcp251xfd_irq()
1559 			err = mcp251xfd_handle(priv, cerrif);  in mcp251xfd_irq()
1560 			if (err)  in mcp251xfd_irq()
1583 		   err, priv->regs_status.intf);  in mcp251xfd_irq()
1595 	int err;  in mcp251xfd_open()  local
1597 	err = open_candev(ndev);  in mcp251xfd_open()
1598 	if (err)  in mcp251xfd_open()
1599 		return err;  in mcp251xfd_open()
1601 	err = pm_runtime_resume_and_get(ndev->dev.parent);  in mcp251xfd_open()
1602 	if (err)  in mcp251xfd_open()
1605 	err = mcp251xfd_ring_alloc(priv);  in mcp251xfd_open()
1606 	if (err)  in mcp251xfd_open()
1609 	err = mcp251xfd_transceiver_enable(priv);  in mcp251xfd_open()
1610 	if (err)  in mcp251xfd_open()
1613 	err = mcp251xfd_chip_start(priv);  in mcp251xfd_open()
1614 	if (err)  in mcp251xfd_open()
1621 	err = request_threaded_irq(spi->irq, NULL, mcp251xfd_irq,  in mcp251xfd_open()
1624 	if (err)  in mcp251xfd_open()
1627 	err = mcp251xfd_chip_interrupts_enable(priv);  in mcp251xfd_open()
1628 	if (err)  in mcp251xfd_open()
1651 	return err;  in mcp251xfd_open()
1699 	int err;  in mcp251xfd_register_chip_detect()  local
1704 	err = regmap_update_bits(priv->map_reg, MCP251XFD_REG_OSC,  in mcp251xfd_register_chip_detect()
1707 	if (err)  in mcp251xfd_register_chip_detect()
1708 		return err;  in mcp251xfd_register_chip_detect()
1710 	err = regmap_read(priv->map_reg, MCP251XFD_REG_OSC, &osc);  in mcp251xfd_register_chip_detect()
1711 	if (err)  in mcp251xfd_register_chip_detect()
1712 		return err;  in mcp251xfd_register_chip_detect()
1745 	int err, rx_pending;  in mcp251xfd_register_check_rx_int()  local
1750 	err = mcp251xfd_chip_rx_int_enable(priv);  in mcp251xfd_register_check_rx_int()
1751 	if (err)  in mcp251xfd_register_check_rx_int()
1752 		return err;  in mcp251xfd_register_check_rx_int()
1759 	err = mcp251xfd_chip_rx_int_disable(priv);  in mcp251xfd_register_check_rx_int()
1760 	if (err)  in mcp251xfd_register_check_rx_int()
1761 		return err;  in mcp251xfd_register_check_rx_int()
1782 	int err;  in mcp251xfd_register_get_dev_id()  local
1790 		err = -ENOMEM;  in mcp251xfd_register_get_dev_id()
1803 	err = spi_sync_transfer(priv->spi, xfer, ARRAY_SIZE(xfer));  in mcp251xfd_register_get_dev_id()
1804 	if (err)  in mcp251xfd_register_get_dev_id()
1816 	return err;  in mcp251xfd_register_get_dev_id()
1827 	int err;  in mcp251xfd_register_done()  local
1829 	err = mcp251xfd_register_get_dev_id(priv, &dev_id,  in mcp251xfd_register_done()
1832 	if (err)  in mcp251xfd_register_done()
1833 		return err;  in mcp251xfd_register_done()
1871 	int err;  in mcp251xfd_register()  local
1873 	err = mcp251xfd_clks_and_vdd_enable(priv);  in mcp251xfd_register()
1874 	if (err)  in mcp251xfd_register()
1875 		return err;  in mcp251xfd_register()
1878 	err = pm_runtime_set_active(ndev->dev.parent);  in mcp251xfd_register()
1879 	if (err)  in mcp251xfd_register()
1885 	err = mcp251xfd_chip_softreset(priv);  in mcp251xfd_register()
1886 	if (err == -ENODEV)  in mcp251xfd_register()
1888 	if (err)  in mcp251xfd_register()
1891 	err = mcp251xfd_chip_clock_init(priv);  in mcp251xfd_register()
1892 	if (err == -ENODEV)  in mcp251xfd_register()
1894 	if (err)  in mcp251xfd_register()
1897 	err = mcp251xfd_register_chip_detect(priv);  in mcp251xfd_register()
1898 	if (err)  in mcp251xfd_register()
1901 	err = mcp251xfd_register_check_rx_int(priv);  in mcp251xfd_register()
1902 	if (err)  in mcp251xfd_register()
1907 	err = register_candev(ndev);  in mcp251xfd_register()
1908 	if (err)  in mcp251xfd_register()
1911 	err = mcp251xfd_register_done(priv);  in mcp251xfd_register()
1912 	if (err)  in mcp251xfd_register()
1919 	err = mcp251xfd_chip_sleep(priv);  in mcp251xfd_register()
1920 	if (err)  in mcp251xfd_register()
1937 	return err;  in mcp251xfd_register()
2000 	int err;  in mcp251xfd_probe()  local
2033 		err = device_property_read_u32(&spi->dev, "clock-frequency",  in mcp251xfd_probe()
2035 		if (err)  in mcp251xfd_probe()
2036 			return dev_err_probe(&spi->dev, err,  in mcp251xfd_probe()
2131 	err = spi_setup(spi);  in mcp251xfd_probe()
2132 	if (err)  in mcp251xfd_probe()
2135 	err = mcp251xfd_regmap_init(priv);  in mcp251xfd_probe()
2136 	if (err)  in mcp251xfd_probe()
2139 	err = can_rx_offload_add_manual(ndev, &priv->offload,  in mcp251xfd_probe()
2141 	if (err)  in mcp251xfd_probe()
2144 	err = mcp251xfd_register(priv);  in mcp251xfd_probe()
2145 	if (err) {  in mcp251xfd_probe()
2146 		dev_err_probe(&spi->dev, err, "Failed to detect %s.\n",  in mcp251xfd_probe()
2160 	return err;  in mcp251xfd_probe()