118 static int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,  in can_calc_bittiming()  argument
134 	if (bt->sample_point) {  in can_calc_bittiming()
135 		sample_point_nominal = bt->sample_point;  in can_calc_bittiming()
137 		if (bt->bitrate > 800000)  in can_calc_bittiming()
139 		else if (bt->bitrate > 500000)  in can_calc_bittiming()
151 		brp = priv->clock.freq / (tsegall * bt->bitrate) + tseg % 2;  in can_calc_bittiming()
159 		bitrate_error = abs(bt->bitrate - bitrate);  in can_calc_bittiming()
186 		do_div(v64, bt->bitrate);  in can_calc_bittiming()
199 	bt->sample_point = can_update_sample_point(btc, sample_point_nominal,  in can_calc_bittiming()
205 	bt->tq = (u32)v64;  in can_calc_bittiming()
206 	bt->prop_seg = tseg1 / 2;  in can_calc_bittiming()
207 	bt->phase_seg1 = tseg1 - bt->prop_seg;  in can_calc_bittiming()
208 	bt->phase_seg2 = tseg2;  in can_calc_bittiming()
211 	if (!bt->sjw || !btc->sjw_max) {  in can_calc_bittiming()
212 		bt->sjw = 1;  in can_calc_bittiming()
215 		if (bt->sjw > btc->sjw_max)  in can_calc_bittiming()
216 			bt->sjw = btc->sjw_max;  in can_calc_bittiming()
218 		if (tseg2 < bt->sjw)  in can_calc_bittiming()
219 			bt->sjw = tseg2;  in can_calc_bittiming()
222 	bt->brp = best_brp;  in can_calc_bittiming()
225 	bt->bitrate = priv->clock.freq /  in can_calc_bittiming()
226 		(bt->brp * (CAN_CALC_SYNC_SEG + tseg1 + tseg2));  in can_calc_bittiming()
231 static int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,  in can_calc_bittiming()  argument
244 static int can_fixup_bittiming(struct net_device *dev, struct can_bittiming *bt,  in can_fixup_bittiming()  argument
251 	tseg1 = bt->prop_seg + bt->phase_seg1;  in can_fixup_bittiming()
252 	if (!bt->sjw)  in can_fixup_bittiming()
253 		bt->sjw = 1;  in can_fixup_bittiming()
254 	if (bt->sjw > btc->sjw_max ||  in can_fixup_bittiming()
256 	    bt->phase_seg2 < btc->tseg2_min || bt->phase_seg2 > btc->tseg2_max)  in can_fixup_bittiming()
259 	brp64 = (u64)priv->clock.freq * (u64)bt->tq;  in can_fixup_bittiming()
266 	bt->brp = (u32)brp64;  in can_fixup_bittiming()
268 	if (bt->brp < btc->brp_min || bt->brp > btc->brp_max)  in can_fixup_bittiming()
271 	alltseg = bt->prop_seg + bt->phase_seg1 + bt->phase_seg2 + 1;  in can_fixup_bittiming()
272 	bt->bitrate = priv->clock.freq / (bt->brp * alltseg);  in can_fixup_bittiming()
273 	bt->sample_point = ((tseg1 + 1) * 1000) / alltseg;  in can_fixup_bittiming()
280 can_validate_bitrate(struct net_device *dev, struct can_bittiming *bt,  in can_validate_bitrate()  argument
288 		if (bt->bitrate == bitrate_const[i])  in can_validate_bitrate()
298 static int can_get_bittiming(struct net_device *dev, struct can_bittiming *bt,  in can_get_bittiming()  argument
310 	if (!bt->tq && bt->bitrate && btc)  in can_get_bittiming()
311 		err = can_calc_bittiming(dev, bt, btc);  in can_get_bittiming()
312 	else if (bt->tq && !bt->bitrate && btc)  in can_get_bittiming()
313 		err = can_fixup_bittiming(dev, bt, btc);  in can_get_bittiming()
314 	else if (!bt->tq && bt->bitrate && bitrate_const)  in can_get_bittiming()
315 		err = can_validate_bitrate(dev, bt, bitrate_const,  in can_get_bittiming()
933 		struct can_bittiming bt;  in can_changelink()  local
947 		memcpy(&bt, nla_data(data[IFLA_CAN_BITTIMING]), sizeof(bt));  in can_changelink()
948 		err = can_get_bittiming(dev, &bt,  in can_changelink()
955 		if (priv->bitrate_max && bt.bitrate > priv->bitrate_max) {  in can_changelink()
961 		memcpy(&priv->bittiming, &bt, sizeof(bt));  in can_changelink()