147 static void ct_xfitimer_irq_rearm(struct ct_timer *atimer, int ticks)  in ct_xfitimer_irq_rearm()  argument
149 	struct hw *hw = atimer->atc->hw;  in ct_xfitimer_irq_rearm()
153 	if (!atimer->running)  in ct_xfitimer_irq_rearm()
155 	atimer->running = 1;  in ct_xfitimer_irq_rearm()
158 static void ct_xfitimer_irq_stop(struct ct_timer *atimer)  in ct_xfitimer_irq_stop()  argument
160 	if (atimer->running) {  in ct_xfitimer_irq_stop()
161 		struct hw *hw = atimer->atc->hw;  in ct_xfitimer_irq_stop()
164 		atimer->running = 0;  in ct_xfitimer_irq_stop()
168 static inline unsigned int ct_xfitimer_get_wc(struct ct_timer *atimer)  in ct_xfitimer_get_wc()  argument
170 	struct hw *hw = atimer->atc->hw;  in ct_xfitimer_get_wc()
182 static int ct_xfitimer_reprogram(struct ct_timer *atimer, int can_update)  in ct_xfitimer_reprogram()  argument
189 	if (list_empty(&atimer->running_head)) {  in ct_xfitimer_reprogram()
190 		ct_xfitimer_irq_stop(atimer);  in ct_xfitimer_reprogram()
191 		atimer->reprogram = 0; /* clear flag */  in ct_xfitimer_reprogram()
195 	wc = ct_xfitimer_get_wc(atimer);  in ct_xfitimer_reprogram()
196 	diff = wc - atimer->wc;  in ct_xfitimer_reprogram()
197 	atimer->wc = wc;  in ct_xfitimer_reprogram()
198 	list_for_each_entry(ti, &atimer->running_head, running_list) {  in ct_xfitimer_reprogram()
226 	ct_xfitimer_irq_rearm(atimer, min_intr);  in ct_xfitimer_reprogram()
227 	atimer->reprogram = 0; /* clear flag */  in ct_xfitimer_reprogram()
232 static void ct_xfitimer_check_period(struct ct_timer *atimer)  in ct_xfitimer_check_period()  argument
237 	spin_lock_irqsave(&atimer->list_lock, flags);  in ct_xfitimer_check_period()
238 	list_for_each_entry(ti, &atimer->instance_head, instance_list) {  in ct_xfitimer_check_period()
244 	spin_unlock_irqrestore(&atimer->list_lock, flags);  in ct_xfitimer_check_period()
248 static void ct_xfitimer_callback(struct ct_timer *atimer)  in ct_xfitimer_callback()  argument
253 	spin_lock_irqsave(&atimer->lock, flags);  in ct_xfitimer_callback()
254 	atimer->irq_handling = 1;  in ct_xfitimer_callback()
256 		update = ct_xfitimer_reprogram(atimer, 1);  in ct_xfitimer_callback()
257 		spin_unlock(&atimer->lock);  in ct_xfitimer_callback()
259 			ct_xfitimer_check_period(atimer);  in ct_xfitimer_callback()
260 		spin_lock(&atimer->lock);  in ct_xfitimer_callback()
261 	} while (atimer->reprogram);  in ct_xfitimer_callback()
262 	atimer->irq_handling = 0;  in ct_xfitimer_callback()
263 	spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_callback()
275 static void ct_xfitimer_update(struct ct_timer *atimer)  in ct_xfitimer_update()  argument
279 	spin_lock_irqsave(&atimer->lock, flags);  in ct_xfitimer_update()
280 	if (atimer->irq_handling) {  in ct_xfitimer_update()
282 		atimer->reprogram = 1;  in ct_xfitimer_update()
283 		spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_update()
287 	ct_xfitimer_irq_stop(atimer);  in ct_xfitimer_update()
288 	ct_xfitimer_reprogram(atimer, 0);  in ct_xfitimer_update()
289 	spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_update()
294 	struct ct_timer *atimer = ti->timer_base;  in ct_xfitimer_start()  local
297 	spin_lock_irqsave(&atimer->lock, flags);  in ct_xfitimer_start()
299 		atimer->wc = ct_xfitimer_get_wc(atimer);  in ct_xfitimer_start()
302 	list_add(&ti->running_list, &atimer->running_head);  in ct_xfitimer_start()
303 	spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_start()
304 	ct_xfitimer_update(atimer);  in ct_xfitimer_start()
309 	struct ct_timer *atimer = ti->timer_base;  in ct_xfitimer_stop()  local
312 	spin_lock_irqsave(&atimer->lock, flags);  in ct_xfitimer_stop()
315 	spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_stop()
316 	ct_xfitimer_update(atimer);  in ct_xfitimer_stop()
319 static void ct_xfitimer_free_global(struct ct_timer *atimer)  in ct_xfitimer_free_global()  argument
321 	ct_xfitimer_irq_stop(atimer);  in ct_xfitimer_free_global()
337 ct_timer_instance_new(struct ct_timer *atimer, struct ct_atc_pcm *apcm)  in ct_timer_instance_new()  argument
347 	ti->timer_base = atimer;  in ct_timer_instance_new()
350 	if (atimer->ops->init)  in ct_timer_instance_new()
351 		atimer->ops->init(ti);  in ct_timer_instance_new()
353 	spin_lock_irq(&atimer->list_lock);  in ct_timer_instance_new()
354 	list_add(&ti->instance_list, &atimer->instance_head);  in ct_timer_instance_new()
355 	spin_unlock_irq(&atimer->list_lock);  in ct_timer_instance_new()
370 	struct ct_timer *atimer = ti->timer_base;  in ct_timer_start()  local
371 	atimer->ops->start(ti);  in ct_timer_start()
376 	struct ct_timer *atimer = ti->timer_base;  in ct_timer_stop()  local
377 	atimer->ops->stop(ti);  in ct_timer_stop()
382 	struct ct_timer *atimer = ti->timer_base;  in ct_timer_instance_free()  local
384 	atimer->ops->stop(ti); /* to be sure */  in ct_timer_instance_free()
385 	if (atimer->ops->free_instance)  in ct_timer_instance_free()
386 		atimer->ops->free_instance(ti);  in ct_timer_instance_free()
388 	spin_lock_irq(&atimer->list_lock);  in ct_timer_instance_free()
390 	spin_unlock_irq(&atimer->list_lock);  in ct_timer_instance_free()
410 	struct ct_timer *atimer;  in ct_timer_new()  local
413 	atimer = kzalloc(sizeof(*atimer), GFP_KERNEL);  in ct_timer_new()
414 	if (!atimer)  in ct_timer_new()
416 	spin_lock_init(&atimer->lock);  in ct_timer_new()
417 	spin_lock_init(&atimer->list_lock);  in ct_timer_new()
418 	INIT_LIST_HEAD(&atimer->instance_head);  in ct_timer_new()
419 	INIT_LIST_HEAD(&atimer->running_head);  in ct_timer_new()
420 	atimer->atc = atc;  in ct_timer_new()
424 		atimer->ops = &ct_xfitimer_ops;  in ct_timer_new()
425 		hw->irq_callback_data = atimer;  in ct_timer_new()
429 		atimer->ops = &ct_systimer_ops;  in ct_timer_new()
431 	return atimer;  in ct_timer_new()
434 void ct_timer_free(struct ct_timer *atimer)  in ct_timer_free()  argument
436 	struct hw *hw = atimer->atc->hw;  in ct_timer_free()
438 	if (atimer->ops->free_global)  in ct_timer_free()
439 		atimer->ops->free_global(atimer);  in ct_timer_free()
440 	kfree(atimer);  in ct_timer_free()