/* SPDX-License-Identifier: GPL-2.0-only */ /* Copyright (c) 2020 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de> */ #ifndef _CAN_BITTIMING_H #define _CAN_BITTIMING_H #include <linux/netdevice.h> #include <linux/can/netlink.h> #define CAN_SYNC_SEG 1 #ifdef CONFIG_CAN_CALC_BITTIMING int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt, const struct can_bittiming_const *btc); #else /* !CONFIG_CAN_CALC_BITTIMING */ static inline int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt, const struct can_bittiming_const *btc) { netdev_err(dev, "bit-timing calculation not available\n"); return -EINVAL; } #endif /* CONFIG_CAN_CALC_BITTIMING */ int can_get_bittiming(struct net_device *dev, struct can_bittiming *bt, const struct can_bittiming_const *btc, const u32 *bitrate_const, const unsigned int bitrate_const_cnt); /* * can_bit_time() - Duration of one bit * * Please refer to ISO 11898-1:2015, section 11.3.1.1 "Bit time" for * additional information. * * Return: the number of time quanta in one bit. */ static inline unsigned int can_bit_time(const struct can_bittiming *bt) { return CAN_SYNC_SEG + bt->prop_seg + bt->phase_seg1 + bt->phase_seg2; } #endif /* !_CAN_BITTIMING_H */