125 static int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,  in can_calc_bittiming()  argument
141 	if (bt->sample_point) {  in can_calc_bittiming()
142 		sample_point_nominal = bt->sample_point;  in can_calc_bittiming()
144 		if (bt->bitrate > 800000)  in can_calc_bittiming()
146 		else if (bt->bitrate > 500000)  in can_calc_bittiming()
158 		brp = priv->clock.freq / (tsegall * bt->bitrate) + tseg % 2;  in can_calc_bittiming()
166 		bitrate_error = abs(bt->bitrate - bitrate);  in can_calc_bittiming()
192 		do_div(v64, bt->bitrate);  in can_calc_bittiming()
205 	bt->sample_point = can_update_sample_point(btc, sample_point_nominal, best_tseg,  in can_calc_bittiming()
210 	bt->tq = (u32)v64;  in can_calc_bittiming()
211 	bt->prop_seg = tseg1 / 2;  in can_calc_bittiming()
212 	bt->phase_seg1 = tseg1 - bt->prop_seg;  in can_calc_bittiming()
213 	bt->phase_seg2 = tseg2;  in can_calc_bittiming()
216 	if (!bt->sjw || !btc->sjw_max) {  in can_calc_bittiming()
217 		bt->sjw = 1;  in can_calc_bittiming()
220 		if (bt->sjw > btc->sjw_max)  in can_calc_bittiming()
221 			bt->sjw = btc->sjw_max;  in can_calc_bittiming()
223 		if (tseg2 < bt->sjw)  in can_calc_bittiming()
224 			bt->sjw = tseg2;  in can_calc_bittiming()
227 	bt->brp = best_brp;  in can_calc_bittiming()
230 	bt->bitrate = priv->clock.freq / (bt->brp * (CAN_CALC_SYNC_SEG + tseg1 + tseg2));  in can_calc_bittiming()
235 static int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,  in can_calc_bittiming()  argument
249 static int can_fixup_bittiming(struct net_device *dev, struct can_bittiming *bt,  in can_fixup_bittiming()  argument
256 	tseg1 = bt->prop_seg + bt->phase_seg1;  in can_fixup_bittiming()
257 	if (!bt->sjw)  in can_fixup_bittiming()
258 		bt->sjw = 1;  in can_fixup_bittiming()
259 	if (bt->sjw > btc->sjw_max ||  in can_fixup_bittiming()
261 	    bt->phase_seg2 < btc->tseg2_min || bt->phase_seg2 > btc->tseg2_max)  in can_fixup_bittiming()
264 	brp64 = (u64)priv->clock.freq * (u64)bt->tq;  in can_fixup_bittiming()
271 	bt->brp = (u32)brp64;  in can_fixup_bittiming()
273 	if (bt->brp < btc->brp_min || bt->brp > btc->brp_max)  in can_fixup_bittiming()
276 	alltseg = bt->prop_seg + bt->phase_seg1 + bt->phase_seg2 + 1;  in can_fixup_bittiming()
277 	bt->bitrate = priv->clock.freq / (bt->brp * alltseg);  in can_fixup_bittiming()
278 	bt->sample_point = ((tseg1 + 1) * 1000) / alltseg;  in can_fixup_bittiming()
284 static int can_validate_bitrate(struct net_device *dev, struct can_bittiming *bt,  in can_validate_bitrate()  argument
292 		if (bt->bitrate == bitrate_const[i])  in can_validate_bitrate()
302 static int can_get_bittiming(struct net_device *dev, struct can_bittiming *bt,  in can_get_bittiming()  argument
315 	if (!bt->tq && bt->bitrate && btc)  in can_get_bittiming()
316 		err = can_calc_bittiming(dev, bt, btc);  in can_get_bittiming()
317 	else if (bt->tq && !bt->bitrate && btc)  in can_get_bittiming()
318 		err = can_fixup_bittiming(dev, bt, btc);  in can_get_bittiming()
319 	else if (!bt->tq && bt->bitrate && bitrate_const)  in can_get_bittiming()
320 		err = can_validate_bitrate(dev, bt, bitrate_const,  in can_get_bittiming()
919 		struct can_bittiming bt;  in can_changelink()  local
933 		memcpy(&bt, nla_data(data[IFLA_CAN_BITTIMING]), sizeof(bt));  in can_changelink()
934 		err = can_get_bittiming(dev, &bt,  in can_changelink()
941 		if (priv->bitrate_max && bt.bitrate > priv->bitrate_max) {  in can_changelink()
947 		memcpy(&priv->bittiming, &bt, sizeof(bt));  in can_changelink()