110 static int fec_ptp_enable_pps(struct fec_enet_private *fep, uint enable)  in fec_ptp_enable_pps()  argument
120 	if (!(fep->hwts_tx_en || fep->hwts_rx_en)) {  in fec_ptp_enable_pps()
121 		dev_err(&fep->pdev->dev, "No ptp stack is running\n");  in fec_ptp_enable_pps()
125 	if (fep->pps_enable == enable)  in fec_ptp_enable_pps()
128 	fep->pps_channel = DEFAULT_PPS_CHANNEL;  in fec_ptp_enable_pps()
129 	fep->reload_period = PPS_OUPUT_RELOAD_PERIOD;  in fec_ptp_enable_pps()
130 	inc = fep->ptp_inc;  in fec_ptp_enable_pps()
132 	spin_lock_irqsave(&fep->tmreg_lock, flags);  in fec_ptp_enable_pps()
137 		writel(FEC_T_TF_MASK, fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
143 		val = readl(fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
146 			writel(val, fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
147 			val = readl(fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
151 		timecounter_read(&fep->tc);  in fec_ptp_enable_pps()
159 		tempval = readl(fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_enable_pps()
161 		writel(tempval, fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_enable_pps()
163 		tempval = readl(fep->hwp + FEC_ATIME);  in fec_ptp_enable_pps()
165 		ns = timecounter_cyc2time(&fep->tc, tempval);  in fec_ptp_enable_pps()
193 		val &= fep->cc.mask;  in fec_ptp_enable_pps()
194 		writel(val, fep->hwp + FEC_TCCR(fep->pps_channel));  in fec_ptp_enable_pps()
197 		fep->next_counter = (val + fep->reload_period) & fep->cc.mask;  in fec_ptp_enable_pps()
200 		val = readl(fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_enable_pps()
202 		writel(val, fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_enable_pps()
205 		val = readl(fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
210 		writel(val, fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
215 		writel(fep->next_counter, fep->hwp + FEC_TCCR(fep->pps_channel));  in fec_ptp_enable_pps()
216 		fep->next_counter = (fep->next_counter + fep->reload_period) & fep->cc.mask;  in fec_ptp_enable_pps()
218 		writel(0, fep->hwp + FEC_TCSR(fep->pps_channel));  in fec_ptp_enable_pps()
221 	fep->pps_enable = enable;  in fec_ptp_enable_pps()
222 	spin_unlock_irqrestore(&fep->tmreg_lock, flags);  in fec_ptp_enable_pps()
237 	struct fec_enet_private *fep =  in fec_ptp_read()  local
240 		platform_get_device_id(fep->pdev);  in fec_ptp_read()
243 	tempval = readl(fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_read()
245 	writel(tempval, fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_read()
250 	return readl(fep->hwp + FEC_ATIME);  in fec_ptp_read()
263 	struct fec_enet_private *fep = netdev_priv(ndev);  in fec_ptp_start_cyclecounter()  local
267 	inc = 1000000000 / fep->cycle_speed;  in fec_ptp_start_cyclecounter()
270 	spin_lock_irqsave(&fep->tmreg_lock, flags);  in fec_ptp_start_cyclecounter()
273 	writel(inc << FEC_T_INC_OFFSET, fep->hwp + FEC_ATIME_INC);  in fec_ptp_start_cyclecounter()
276 	writel(FEC_COUNTER_PERIOD, fep->hwp + FEC_ATIME_EVT_PERIOD);  in fec_ptp_start_cyclecounter()
279 		fep->hwp + FEC_ATIME_CTRL);  in fec_ptp_start_cyclecounter()
281 	memset(&fep->cc, 0, sizeof(fep->cc));  in fec_ptp_start_cyclecounter()
282 	fep->cc.read = fec_ptp_read;  in fec_ptp_start_cyclecounter()
283 	fep->cc.mask = CLOCKSOURCE_MASK(31);  in fec_ptp_start_cyclecounter()
284 	fep->cc.shift = 31;  in fec_ptp_start_cyclecounter()
285 	fep->cc.mult = FEC_CC_MULT;  in fec_ptp_start_cyclecounter()
288 	timecounter_init(&fep->tc, &fep->cc, ktime_to_ns(ktime_get_real()));  in fec_ptp_start_cyclecounter()
290 	spin_unlock_irqrestore(&fep->tmreg_lock, flags);  in fec_ptp_start_cyclecounter()
313 	struct fec_enet_private *fep =  in fec_ptp_adjfreq()  local
329 	rhs = (u64)ppb * (u64)fep->ptp_inc;  in fec_ptp_adjfreq()
330 	for (i = 1; i <= fep->ptp_inc; i++) {  in fec_ptp_adjfreq()
341 	if (i > fep->ptp_inc) {  in fec_ptp_adjfreq()
342 		corr_inc = fep->ptp_inc;  in fec_ptp_adjfreq()
347 		corr_ns = fep->ptp_inc - corr_inc;  in fec_ptp_adjfreq()
349 		corr_ns = fep->ptp_inc + corr_inc;  in fec_ptp_adjfreq()
351 	spin_lock_irqsave(&fep->tmreg_lock, flags);  in fec_ptp_adjfreq()
353 	tmp = readl(fep->hwp + FEC_ATIME_INC) & FEC_T_INC_MASK;  in fec_ptp_adjfreq()
355 	writel(tmp, fep->hwp + FEC_ATIME_INC);  in fec_ptp_adjfreq()
356 	writel(corr_period, fep->hwp + FEC_ATIME_CORR);  in fec_ptp_adjfreq()
358 	timecounter_read(&fep->tc);  in fec_ptp_adjfreq()
360 	spin_unlock_irqrestore(&fep->tmreg_lock, flags);  in fec_ptp_adjfreq()
374 	struct fec_enet_private *fep =  in fec_ptp_adjtime()  local
378 	spin_lock_irqsave(&fep->tmreg_lock, flags);  in fec_ptp_adjtime()
379 	timecounter_adjtime(&fep->tc, delta);  in fec_ptp_adjtime()
380 	spin_unlock_irqrestore(&fep->tmreg_lock, flags);  in fec_ptp_adjtime()
420 	struct fec_enet_private *fep =  in fec_ptp_settime()  local
427 	mutex_lock(&fep->ptp_clk_mutex);  in fec_ptp_settime()
429 	if (!fep->ptp_clk_on) {  in fec_ptp_settime()
430 		mutex_unlock(&fep->ptp_clk_mutex);  in fec_ptp_settime()
438 	counter = ns & fep->cc.mask;  in fec_ptp_settime()
440 	spin_lock_irqsave(&fep->tmreg_lock, flags);  in fec_ptp_settime()
441 	writel(counter, fep->hwp + FEC_ATIME);  in fec_ptp_settime()
442 	timecounter_init(&fep->tc, &fep->cc, ns);  in fec_ptp_settime()
443 	spin_unlock_irqrestore(&fep->tmreg_lock, flags);  in fec_ptp_settime()
444 	mutex_unlock(&fep->ptp_clk_mutex);  in fec_ptp_settime()
458 	struct fec_enet_private *fep =  in fec_ptp_enable()  local
463 		ret = fec_ptp_enable_pps(fep, on);  in fec_ptp_enable()
478 	struct fec_enet_private *fep = netdev_priv(ndev);  in fec_ptp_set()  local
491 		fep->hwts_tx_en = 0;  in fec_ptp_set()
494 		fep->hwts_tx_en = 1;  in fec_ptp_set()
502 		if (fep->hwts_rx_en)  in fec_ptp_set()
503 			fep->hwts_rx_en = 0;  in fec_ptp_set()
514 		fep->hwts_rx_en = 1;  in fec_ptp_set()
525 	struct fec_enet_private *fep = netdev_priv(ndev);  in fec_ptp_get()  local
529 	config.tx_type = fep->hwts_tx_en ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;  in fec_ptp_get()
530 	config.rx_filter = (fep->hwts_rx_en ?  in fec_ptp_get()
544 	struct fec_enet_private *fep = container_of(dwork, struct fec_enet_private, time_keep);  in fec_time_keep()  local
548 	mutex_lock(&fep->ptp_clk_mutex);  in fec_time_keep()
549 	if (fep->ptp_clk_on) {  in fec_time_keep()
550 		spin_lock_irqsave(&fep->tmreg_lock, flags);  in fec_time_keep()
551 		ns = timecounter_read(&fep->tc);  in fec_time_keep()
552 		spin_unlock_irqrestore(&fep->tmreg_lock, flags);  in fec_time_keep()
554 	mutex_unlock(&fep->ptp_clk_mutex);  in fec_time_keep()
556 	schedule_delayed_work(&fep->time_keep, HZ);  in fec_time_keep()
571 	struct fec_enet_private *fep = netdev_priv(ndev);  in fec_ptp_init()  local
573 	fep->ptp_caps.owner = THIS_MODULE;  in fec_ptp_init()
574 	snprintf(fep->ptp_caps.name, 16, "fec ptp");  in fec_ptp_init()
576 	fep->ptp_caps.max_adj = 250000000;  in fec_ptp_init()
577 	fep->ptp_caps.n_alarm = 0;  in fec_ptp_init()
578 	fep->ptp_caps.n_ext_ts = 0;  in fec_ptp_init()
579 	fep->ptp_caps.n_per_out = 0;  in fec_ptp_init()
580 	fep->ptp_caps.n_pins = 0;  in fec_ptp_init()
581 	fep->ptp_caps.pps = 1;  in fec_ptp_init()
582 	fep->ptp_caps.adjfreq = fec_ptp_adjfreq;  in fec_ptp_init()
583 	fep->ptp_caps.adjtime = fec_ptp_adjtime;  in fec_ptp_init()
584 	fep->ptp_caps.gettime64 = fec_ptp_gettime;  in fec_ptp_init()
585 	fep->ptp_caps.settime64 = fec_ptp_settime;  in fec_ptp_init()
586 	fep->ptp_caps.enable = fec_ptp_enable;  in fec_ptp_init()
588 	fep->cycle_speed = clk_get_rate(fep->clk_ptp);  in fec_ptp_init()
589 	fep->ptp_inc = NSEC_PER_SEC / fep->cycle_speed;  in fec_ptp_init()
591 	spin_lock_init(&fep->tmreg_lock);  in fec_ptp_init()
595 	INIT_DELAYED_WORK(&fep->time_keep, fec_time_keep);  in fec_ptp_init()
597 	fep->ptp_clock = ptp_clock_register(&fep->ptp_caps, &pdev->dev);  in fec_ptp_init()
598 	if (IS_ERR(fep->ptp_clock)) {  in fec_ptp_init()
599 		fep->ptp_clock = NULL;  in fec_ptp_init()
603 	schedule_delayed_work(&fep->time_keep, HZ);  in fec_ptp_init()
612 uint fec_ptp_check_pps_event(struct fec_enet_private *fep)  in fec_ptp_check_pps_event()  argument
615 	u8 channel = fep->pps_channel;  in fec_ptp_check_pps_event()
618 	val = readl(fep->hwp + FEC_TCSR(channel));  in fec_ptp_check_pps_event()
623 		writel(fep->next_counter, fep->hwp + FEC_TCCR(channel));  in fec_ptp_check_pps_event()
625 			writel(val, fep->hwp + FEC_TCSR(channel));  in fec_ptp_check_pps_event()
626 		} while (readl(fep->hwp + FEC_TCSR(channel)) & FEC_T_TF_MASK);  in fec_ptp_check_pps_event()
629 		fep->next_counter = (fep->next_counter + fep->reload_period) & fep->cc.mask;  in fec_ptp_check_pps_event()
632 		ptp_clock_event(fep->ptp_clock, &event);  in fec_ptp_check_pps_event()