110 static int fec_ptp_enable_pps(struct fec_enet_private *fep, uint enable)  in fec_ptp_enable_pps()  argument
119 	if (!(fep->hwts_tx_en || fep->hwts_rx_en)) {  in fec_ptp_enable_pps()
120 		dev_err(&fep->pdev->dev, "No ptp stack is running\n");  in fec_ptp_enable_pps()
124 	if (fep->pps_enable == enable)  in fec_ptp_enable_pps()
127 	fep->pps_channel = DEFAULT_PPS_CHANNEL;  in fec_ptp_enable_pps()
128 	fep->reload_period = PPS_OUPUT_RELOAD_PERIOD;  in fec_ptp_enable_pps()
129 	inc = fep->ptp_inc;  in fec_ptp_enable_pps()
131 	spin_lock_irqsave(&fep->tmreg_lock, flags);  in fec_ptp_enable_pps()
136 		writel(FEC_T_TF_MASK, fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
142 		val = readl(fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
145 			writel(val, fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
146 			val = readl(fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
150 		timecounter_read(&fep->tc);  in fec_ptp_enable_pps()
158 		tempval = readl(fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_enable_pps()
160 		writel(tempval, fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_enable_pps()
162 		tempval = readl(fep->hwp + FEC_ATIME);  in fec_ptp_enable_pps()
164 		ns = timecounter_cyc2time(&fep->tc, tempval);  in fec_ptp_enable_pps()
191 		val &= fep->cc.mask;  in fec_ptp_enable_pps()
192 		writel(val, fep->hwp + FEC_TCCR(fep->pps_channel));  in fec_ptp_enable_pps()
195 		fep->next_counter = (val + fep->reload_period) & fep->cc.mask;  in fec_ptp_enable_pps()
198 		val = readl(fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_enable_pps()
200 		writel(val, fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_enable_pps()
203 		val = readl(fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
208 		writel(val, fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
213 		writel(fep->next_counter, fep->hwp + FEC_TCCR(fep->pps_channel));  in fec_ptp_enable_pps()
214 		fep->next_counter = (fep->next_counter + fep->reload_period) & fep->cc.mask;  in fec_ptp_enable_pps()
216 		writel(0, fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
219 	fep->pps_enable = enable;  in fec_ptp_enable_pps()
220 	spin_unlock_irqrestore(&fep->tmreg_lock, flags);  in fec_ptp_enable_pps()
235 	struct fec_enet_private *fep =  in fec_ptp_read()  local
238 		platform_get_device_id(fep->pdev);  in fec_ptp_read()
241 	tempval = readl(fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_read()
243 	writel(tempval, fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_read()
248 	return readl(fep->hwp + FEC_ATIME);  in fec_ptp_read()
261 	struct fec_enet_private *fep = netdev_priv(ndev);  in fec_ptp_start_cyclecounter()  local
265 	inc = 1000000000 / fep->cycle_speed;  in fec_ptp_start_cyclecounter()
268 	spin_lock_irqsave(&fep->tmreg_lock, flags);  in fec_ptp_start_cyclecounter()
271 	writel(inc << FEC_T_INC_OFFSET, fep->hwp + FEC_ATIME_INC);  in fec_ptp_start_cyclecounter()
274 	writel(FEC_COUNTER_PERIOD, fep->hwp + FEC_ATIME_EVT_PERIOD);  in fec_ptp_start_cyclecounter()
277 		fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_start_cyclecounter()
279 	memset(&fep->cc, 0, sizeof(fep->cc));  in fec_ptp_start_cyclecounter()
280 	fep->cc.read = fec_ptp_read;  in fec_ptp_start_cyclecounter()
281 	fep->cc.mask = CLOCKSOURCE_MASK(31);  in fec_ptp_start_cyclecounter()
282 	fep->cc.shift = 31;  in fec_ptp_start_cyclecounter()
283 	fep->cc.mult = FEC_CC_MULT;  in fec_ptp_start_cyclecounter()
286 	timecounter_init(&fep->tc, &fep->cc, ktime_to_ns(ktime_get_real()));  in fec_ptp_start_cyclecounter()
288 	spin_unlock_irqrestore(&fep->tmreg_lock, flags);  in fec_ptp_start_cyclecounter()
311 	struct fec_enet_private *fep =  in fec_ptp_adjfreq()  local
327 	rhs = (u64)ppb * (u64)fep->ptp_inc;  in fec_ptp_adjfreq()
328 	for (i = 1; i <= fep->ptp_inc; i++) {  in fec_ptp_adjfreq()
339 	if (i > fep->ptp_inc) {  in fec_ptp_adjfreq()
340 		corr_inc = fep->ptp_inc;  in fec_ptp_adjfreq()
345 		corr_ns = fep->ptp_inc - corr_inc;  in fec_ptp_adjfreq()
347 		corr_ns = fep->ptp_inc + corr_inc;  in fec_ptp_adjfreq()
349 	spin_lock_irqsave(&fep->tmreg_lock, flags);  in fec_ptp_adjfreq()
351 	tmp = readl(fep->hwp + FEC_ATIME_INC) & FEC_T_INC_MASK;  in fec_ptp_adjfreq()
353 	writel(tmp, fep->hwp + FEC_ATIME_INC);  in fec_ptp_adjfreq()
355 	writel(corr_period, fep->hwp + FEC_ATIME_CORR);  in fec_ptp_adjfreq()
357 	timecounter_read(&fep->tc);  in fec_ptp_adjfreq()
359 	spin_unlock_irqrestore(&fep->tmreg_lock, flags);  in fec_ptp_adjfreq()
373 	struct fec_enet_private *fep =  in fec_ptp_adjtime()  local
377 	spin_lock_irqsave(&fep->tmreg_lock, flags);  in fec_ptp_adjtime()
378 	timecounter_adjtime(&fep->tc, delta);  in fec_ptp_adjtime()
379 	spin_unlock_irqrestore(&fep->tmreg_lock, flags);  in fec_ptp_adjtime()
419 	struct fec_enet_private *fep =  in fec_ptp_settime()  local
426 	mutex_lock(&fep->ptp_clk_mutex);  in fec_ptp_settime()
428 	if (!fep->ptp_clk_on) {  in fec_ptp_settime()
429 		mutex_unlock(&fep->ptp_clk_mutex);  in fec_ptp_settime()
437 	counter = ns & fep->cc.mask;  in fec_ptp_settime()
439 	spin_lock_irqsave(&fep->tmreg_lock, flags);  in fec_ptp_settime()
440 	writel(counter, fep->hwp + FEC_ATIME);  in fec_ptp_settime()
441 	timecounter_init(&fep->tc, &fep->cc, ns);  in fec_ptp_settime()
442 	spin_unlock_irqrestore(&fep->tmreg_lock, flags);  in fec_ptp_settime()
443 	mutex_unlock(&fep->ptp_clk_mutex);  in fec_ptp_settime()
457 	struct fec_enet_private *fep =  in fec_ptp_enable()  local
462 		ret = fec_ptp_enable_pps(fep, on);  in fec_ptp_enable()
477 	struct fec_enet_private *fep = netdev_priv(ndev);  in fec_ptp_set()  local
490 		fep->hwts_tx_en = 0;  in fec_ptp_set()
493 		fep->hwts_tx_en = 1;  in fec_ptp_set()
501 		if (fep->hwts_rx_en)  in fec_ptp_set()
502 			fep->hwts_rx_en = 0;  in fec_ptp_set()
507 		fep->hwts_rx_en = 1;  in fec_ptp_set()
518 	struct fec_enet_private *fep = netdev_priv(ndev);  in fec_ptp_get()  local
522 	config.tx_type = fep->hwts_tx_en ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;  in fec_ptp_get()
523 	config.rx_filter = (fep->hwts_rx_en ?  in fec_ptp_get()
537 	struct fec_enet_private *fep = container_of(dwork, struct fec_enet_private, time_keep);  in fec_time_keep()  local
541 	mutex_lock(&fep->ptp_clk_mutex);  in fec_time_keep()
542 	if (fep->ptp_clk_on) {  in fec_time_keep()
543 		spin_lock_irqsave(&fep->tmreg_lock, flags);  in fec_time_keep()
544 		ns = timecounter_read(&fep->tc);  in fec_time_keep()
545 		spin_unlock_irqrestore(&fep->tmreg_lock, flags);  in fec_time_keep()
547 	mutex_unlock(&fep->ptp_clk_mutex);  in fec_time_keep()
549 	schedule_delayed_work(&fep->time_keep, HZ);  in fec_time_keep()
564 	struct fec_enet_private *fep = netdev_priv(ndev);  in fec_ptp_init()  local
566 	fep->ptp_caps.owner = THIS_MODULE;  in fec_ptp_init()
567 	snprintf(fep->ptp_caps.name, 16, "fec ptp");  in fec_ptp_init()
569 	fep->ptp_caps.max_adj = 250000000;  in fec_ptp_init()
570 	fep->ptp_caps.n_alarm = 0;  in fec_ptp_init()
571 	fep->ptp_caps.n_ext_ts = 0;  in fec_ptp_init()
572 	fep->ptp_caps.n_per_out = 0;  in fec_ptp_init()
573 	fep->ptp_caps.n_pins = 0;  in fec_ptp_init()
574 	fep->ptp_caps.pps = 1;  in fec_ptp_init()
575 	fep->ptp_caps.adjfreq = fec_ptp_adjfreq;  in fec_ptp_init()
576 	fep->ptp_caps.adjtime = fec_ptp_adjtime;  in fec_ptp_init()
577 	fep->ptp_caps.gettime64 = fec_ptp_gettime;  in fec_ptp_init()
578 	fep->ptp_caps.settime64 = fec_ptp_settime;  in fec_ptp_init()
579 	fep->ptp_caps.enable = fec_ptp_enable;  in fec_ptp_init()
581 	fep->cycle_speed = clk_get_rate(fep->clk_ptp);  in fec_ptp_init()
582 	fep->ptp_inc = NSEC_PER_SEC / fep->cycle_speed;  in fec_ptp_init()
584 	spin_lock_init(&fep->tmreg_lock);  in fec_ptp_init()
588 	INIT_DELAYED_WORK(&fep->time_keep, fec_time_keep);  in fec_ptp_init()
590 	fep->ptp_clock = ptp_clock_register(&fep->ptp_caps, &pdev->dev);  in fec_ptp_init()
591 	if (IS_ERR(fep->ptp_clock)) {  in fec_ptp_init()
592 		fep->ptp_clock = NULL;  in fec_ptp_init()
596 	schedule_delayed_work(&fep->time_keep, HZ);  in fec_ptp_init()
602 	struct fec_enet_private *fep = netdev_priv(ndev);  in fec_ptp_stop()  local
604 	cancel_delayed_work_sync(&fep->time_keep);  in fec_ptp_stop()
605 	if (fep->ptp_clock)  in fec_ptp_stop()
606 		ptp_clock_unregister(fep->ptp_clock);  in fec_ptp_stop()
615 uint fec_ptp_check_pps_event(struct fec_enet_private *fep)  in fec_ptp_check_pps_event()  argument
618 	u8 channel = fep->pps_channel;  in fec_ptp_check_pps_event()
621 	val = readl(fep->hwp + FEC_TCSR(channel));  in fec_ptp_check_pps_event()
626 		writel(fep->next_counter, fep->hwp + FEC_TCCR(channel));  in fec_ptp_check_pps_event()
628 			writel(val, fep->hwp + FEC_TCSR(channel));  in fec_ptp_check_pps_event()
629 		} while (readl(fep->hwp + FEC_TCSR(channel)) & FEC_T_TF_MASK);  in fec_ptp_check_pps_event()
632 		fep->next_counter = (fep->next_counter + fep->reload_period) & fep->cc.mask;  in fec_ptp_check_pps_event()
635 		ptp_clock_event(fep->ptp_clock, &event);  in fec_ptp_check_pps_event()