marvell/mvpp2/mvpp2_tai.c

152 static u64 mvpp22_calc_frac_ppm(struct mvpp2_tai *tai, long abs_scaled_ppm)
154 	u64 val = tai->period * abs_scaled_ppm >> 4;
159 static s32 mvpp22_calc_max_adj(struct mvpp2_tai *tai)
166 	struct mvpp2_tai *tai = ptp_to_tai(ptp);
177 	val = mvpp22_calc_frac_ppm(tai, scaled_ppm);
195 	base = tai->base;
196 	spin_lock_irqsave(&tai->lock, flags);
200 	spin_unlock_irqrestore(&tai->lock, flags);
207 	struct mvpp2_tai *tai = ptp_to_tai(ptp);
226 	base = tai->base;
227 	spin_lock_irqsave(&tai->lock, flags);
230 	spin_unlock_irqrestore(&tai->lock, flags);
239 	struct mvpp2_tai *tai = ptp_to_tai(ptp);
245 	base = tai->base;
246 	spin_lock_irqsave(&tai->lock, flags);
271 	spin_unlock_irqrestore(&tai->lock, flags);
279 	struct mvpp2_tai *tai = ptp_to_tai(ptp);
283 	base = tai->base;
284 	spin_lock_irqsave(&tai->lock, flags);
297 	spin_unlock_irqrestore(&tai->lock, flags);
304 	struct mvpp2_tai *tai = ptp_to_tai(ptp);
306 	mvpp22_tai_gettimex64(ptp, &tai->stamp, NULL);
311 static void mvpp22_tai_set_step(struct mvpp2_tai *tai)
313 	void __iomem *base = tai->base;
316 	nano = upper_32_bits(tai->period);
317 	frac = lower_32_bits(tai->period);
330 static void mvpp22_tai_init(struct mvpp2_tai *tai)
332 	void __iomem *base = tai->base;
334 	mvpp22_tai_set_step(tai);
340 int mvpp22_tai_ptp_clock_index(struct mvpp2_tai *tai)
342 	return ptp_clock_index(tai->ptp_clock);
345 void mvpp22_tai_tstamp(struct mvpp2_tai *tai, u32 tstamp,
352 	 * We use our stored timestamp (tai->stamp) to form a full timestamp,
355 	ts.tv_sec = READ_ONCE(tai->stamp.tv_sec);
371 void mvpp22_tai_start(struct mvpp2_tai *tai)
375 	delay = mvpp22_tai_aux_work(&tai->caps);
377 	ptp_schedule_worker(tai->ptp_clock, delay);
380 void mvpp22_tai_stop(struct mvpp2_tai *tai)
382 	ptp_cancel_worker_sync(tai->ptp_clock);
387 	struct mvpp2_tai *tai = priv;
389 	if (!IS_ERR(tai->ptp_clock))
390 		ptp_clock_unregister(tai->ptp_clock);
395 	struct mvpp2_tai *tai;
398 	tai = devm_kzalloc(dev, sizeof(*tai), GFP_KERNEL);
399 	if (!tai)
402 	spin_lock_init(&tai->lock);
404 	tai->base = priv->iface_base;
433 	tai->period = 3ULL << 32;
435 	mvpp22_tai_init(tai);
437 	tai->caps.owner = THIS_MODULE;
438 	strscpy(tai->caps.name, "Marvell PP2.2", sizeof(tai->caps.name));
439 	tai->caps.max_adj = mvpp22_calc_max_adj(tai);
440 	tai->caps.adjfine = mvpp22_tai_adjfine;
441 	tai->caps.adjtime = mvpp22_tai_adjtime;
442 	tai->caps.gettimex64 = mvpp22_tai_gettimex64;
443 	tai->caps.settime64 = mvpp22_tai_settime64;
444 	tai->caps.do_aux_work = mvpp22_tai_aux_work;
446 	ret = devm_add_action(dev, mvpp22_tai_remove, tai);
450 	tai->ptp_clock = ptp_clock_register(&tai->caps, dev);
451 	if (IS_ERR(tai->ptp_clock))
452 		return PTR_ERR(tai->ptp_clock);
454 	priv->tai = tai;