103 static int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt)  in can_calc_bittiming()  argument
118 	if (bt->sample_point) {  in can_calc_bittiming()
119 		sampl_pt = bt->sample_point;  in can_calc_bittiming()
121 		if (bt->bitrate > 800000)  in can_calc_bittiming()
123 		else if (bt->bitrate > 500000)  in can_calc_bittiming()
134 		brp = priv->clock.freq / (tsegall * bt->bitrate) + tseg % 2;  in can_calc_bittiming()
140 		error = bt->bitrate - rate;  in can_calc_bittiming()
166 		error = (best_error * 1000) / bt->bitrate;  in can_calc_bittiming()
179 	bt->sample_point = can_update_spt(btc, sampl_pt, best_tseg,  in can_calc_bittiming()
184 	bt->tq = (u32)v64;  in can_calc_bittiming()
185 	bt->prop_seg = tseg1 / 2;  in can_calc_bittiming()
186 	bt->phase_seg1 = tseg1 - bt->prop_seg;  in can_calc_bittiming()
187 	bt->phase_seg2 = tseg2;  in can_calc_bittiming()
190 	if (!bt->sjw || !btc->sjw_max)  in can_calc_bittiming()
191 		bt->sjw = 1;  in can_calc_bittiming()
194 		if (bt->sjw > btc->sjw_max)  in can_calc_bittiming()
195 			bt->sjw = btc->sjw_max;  in can_calc_bittiming()
197 		if (tseg2 < bt->sjw)  in can_calc_bittiming()
198 			bt->sjw = tseg2;  in can_calc_bittiming()
201 	bt->brp = best_brp;  in can_calc_bittiming()
203 	bt->bitrate = priv->clock.freq / (bt->brp * (tseg1 + tseg2 + 1));  in can_calc_bittiming()
208 static int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt)  in can_calc_bittiming()  argument
221 static int can_fixup_bittiming(struct net_device *dev, struct can_bittiming *bt)  in can_fixup_bittiming()  argument
231 	tseg1 = bt->prop_seg + bt->phase_seg1;  in can_fixup_bittiming()
232 	if (!bt->sjw)  in can_fixup_bittiming()
233 		bt->sjw = 1;  in can_fixup_bittiming()
234 	if (bt->sjw > btc->sjw_max ||  in can_fixup_bittiming()
236 	    bt->phase_seg2 < btc->tseg2_min || bt->phase_seg2 > btc->tseg2_max)  in can_fixup_bittiming()
239 	brp64 = (u64)priv->clock.freq * (u64)bt->tq;  in can_fixup_bittiming()
246 	bt->brp = (u32)brp64;  in can_fixup_bittiming()
248 	if (bt->brp < btc->brp_min || bt->brp > btc->brp_max)  in can_fixup_bittiming()
251 	alltseg = bt->prop_seg + bt->phase_seg1 + bt->phase_seg2 + 1;  in can_fixup_bittiming()
252 	bt->bitrate = priv->clock.freq / (bt->brp * alltseg);  in can_fixup_bittiming()
253 	bt->sample_point = ((tseg1 + 1) * 1000) / alltseg;  in can_fixup_bittiming()
258 static int can_get_bittiming(struct net_device *dev, struct can_bittiming *bt)  in can_get_bittiming()  argument
267 		if (!bt->tq)  in can_get_bittiming()
269 			err = can_calc_bittiming(dev, bt);  in can_get_bittiming()
272 			err = can_fixup_bittiming(dev, bt);  in can_get_bittiming()
662 		struct can_bittiming bt;  in can_changelink()  local
667 		memcpy(&bt, nla_data(data[IFLA_CAN_BITTIMING]), sizeof(bt));  in can_changelink()
668 		if ((!bt.bitrate && !bt.tq) || (bt.bitrate && bt.tq))  in can_changelink()
670 		err = can_get_bittiming(dev, &bt);  in can_changelink()
673 		memcpy(&priv->bittiming, &bt, sizeof(bt));  in can_changelink()