144 static void ct_xfitimer_irq_rearm(struct ct_timer *atimer, int ticks)  in ct_xfitimer_irq_rearm()  argument
146 	struct hw *hw = atimer->atc->hw;  in ct_xfitimer_irq_rearm()
150 	if (!atimer->running)  in ct_xfitimer_irq_rearm()
152 	atimer->running = 1;  in ct_xfitimer_irq_rearm()
155 static void ct_xfitimer_irq_stop(struct ct_timer *atimer)  in ct_xfitimer_irq_stop()  argument
157 	if (atimer->running) {  in ct_xfitimer_irq_stop()
158 		struct hw *hw = atimer->atc->hw;  in ct_xfitimer_irq_stop()
161 		atimer->running = 0;  in ct_xfitimer_irq_stop()
165 static inline unsigned int ct_xfitimer_get_wc(struct ct_timer *atimer)  in ct_xfitimer_get_wc()  argument
167 	struct hw *hw = atimer->atc->hw;  in ct_xfitimer_get_wc()
179 static int ct_xfitimer_reprogram(struct ct_timer *atimer, int can_update)  in ct_xfitimer_reprogram()  argument
186 	if (list_empty(&atimer->running_head)) {  in ct_xfitimer_reprogram()
187 		ct_xfitimer_irq_stop(atimer);  in ct_xfitimer_reprogram()
188 		atimer->reprogram = 0; /* clear flag */  in ct_xfitimer_reprogram()
192 	wc = ct_xfitimer_get_wc(atimer);  in ct_xfitimer_reprogram()
193 	diff = wc - atimer->wc;  in ct_xfitimer_reprogram()
194 	atimer->wc = wc;  in ct_xfitimer_reprogram()
195 	list_for_each_entry(ti, &atimer->running_head, running_list) {  in ct_xfitimer_reprogram()
223 	ct_xfitimer_irq_rearm(atimer, min_intr);  in ct_xfitimer_reprogram()
224 	atimer->reprogram = 0; /* clear flag */  in ct_xfitimer_reprogram()
229 static void ct_xfitimer_check_period(struct ct_timer *atimer)  in ct_xfitimer_check_period()  argument
234 	spin_lock_irqsave(&atimer->list_lock, flags);  in ct_xfitimer_check_period()
235 	list_for_each_entry(ti, &atimer->instance_head, instance_list) {  in ct_xfitimer_check_period()
241 	spin_unlock_irqrestore(&atimer->list_lock, flags);  in ct_xfitimer_check_period()
245 static void ct_xfitimer_callback(struct ct_timer *atimer)  in ct_xfitimer_callback()  argument
250 	spin_lock_irqsave(&atimer->lock, flags);  in ct_xfitimer_callback()
251 	atimer->irq_handling = 1;  in ct_xfitimer_callback()
253 		update = ct_xfitimer_reprogram(atimer, 1);  in ct_xfitimer_callback()
254 		spin_unlock(&atimer->lock);  in ct_xfitimer_callback()
256 			ct_xfitimer_check_period(atimer);  in ct_xfitimer_callback()
257 		spin_lock(&atimer->lock);  in ct_xfitimer_callback()
258 	} while (atimer->reprogram);  in ct_xfitimer_callback()
259 	atimer->irq_handling = 0;  in ct_xfitimer_callback()
260 	spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_callback()
272 static void ct_xfitimer_update(struct ct_timer *atimer)  in ct_xfitimer_update()  argument
276 	spin_lock_irqsave(&atimer->lock, flags);  in ct_xfitimer_update()
277 	if (atimer->irq_handling) {  in ct_xfitimer_update()
279 		atimer->reprogram = 1;  in ct_xfitimer_update()
280 		spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_update()
284 	ct_xfitimer_irq_stop(atimer);  in ct_xfitimer_update()
285 	ct_xfitimer_reprogram(atimer, 0);  in ct_xfitimer_update()
286 	spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_update()
291 	struct ct_timer *atimer = ti->timer_base;  in ct_xfitimer_start()  local
294 	spin_lock_irqsave(&atimer->lock, flags);  in ct_xfitimer_start()
296 		atimer->wc = ct_xfitimer_get_wc(atimer);  in ct_xfitimer_start()
299 	list_add(&ti->running_list, &atimer->running_head);  in ct_xfitimer_start()
300 	spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_start()
301 	ct_xfitimer_update(atimer);  in ct_xfitimer_start()
306 	struct ct_timer *atimer = ti->timer_base;  in ct_xfitimer_stop()  local
309 	spin_lock_irqsave(&atimer->lock, flags);  in ct_xfitimer_stop()
312 	spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_stop()
313 	ct_xfitimer_update(atimer);  in ct_xfitimer_stop()
316 static void ct_xfitimer_free_global(struct ct_timer *atimer)  in ct_xfitimer_free_global()  argument
318 	ct_xfitimer_irq_stop(atimer);  in ct_xfitimer_free_global()
334 ct_timer_instance_new(struct ct_timer *atimer, struct ct_atc_pcm *apcm)  in ct_timer_instance_new()  argument
344 	ti->timer_base = atimer;  in ct_timer_instance_new()
347 	if (atimer->ops->init)  in ct_timer_instance_new()
348 		atimer->ops->init(ti);  in ct_timer_instance_new()
350 	spin_lock_irq(&atimer->list_lock);  in ct_timer_instance_new()
351 	list_add(&ti->instance_list, &atimer->instance_head);  in ct_timer_instance_new()
352 	spin_unlock_irq(&atimer->list_lock);  in ct_timer_instance_new()
367 	struct ct_timer *atimer = ti->timer_base;  in ct_timer_start()  local
368 	atimer->ops->start(ti);  in ct_timer_start()
373 	struct ct_timer *atimer = ti->timer_base;  in ct_timer_stop()  local
374 	atimer->ops->stop(ti);  in ct_timer_stop()
379 	struct ct_timer *atimer = ti->timer_base;  in ct_timer_instance_free()  local
381 	atimer->ops->stop(ti); /* to be sure */  in ct_timer_instance_free()
382 	if (atimer->ops->free_instance)  in ct_timer_instance_free()
383 		atimer->ops->free_instance(ti);  in ct_timer_instance_free()
385 	spin_lock_irq(&atimer->list_lock);  in ct_timer_instance_free()
387 	spin_unlock_irq(&atimer->list_lock);  in ct_timer_instance_free()
407 	struct ct_timer *atimer;  in ct_timer_new()  local
410 	atimer = kzalloc(sizeof(*atimer), GFP_KERNEL);  in ct_timer_new()
411 	if (!atimer)  in ct_timer_new()
413 	spin_lock_init(&atimer->lock);  in ct_timer_new()
414 	spin_lock_init(&atimer->list_lock);  in ct_timer_new()
415 	INIT_LIST_HEAD(&atimer->instance_head);  in ct_timer_new()
416 	INIT_LIST_HEAD(&atimer->running_head);  in ct_timer_new()
417 	atimer->atc = atc;  in ct_timer_new()
421 		atimer->ops = &ct_xfitimer_ops;  in ct_timer_new()
422 		hw->irq_callback_data = atimer;  in ct_timer_new()
426 		atimer->ops = &ct_systimer_ops;  in ct_timer_new()
428 	return atimer;  in ct_timer_new()
431 void ct_timer_free(struct ct_timer *atimer)  in ct_timer_free()  argument
433 	struct hw *hw = atimer->atc->hw;  in ct_timer_free()
435 	if (atimer->ops->free_global)  in ct_timer_free()
436 		atimer->ops->free_global(atimer);  in ct_timer_free()
437 	kfree(atimer);  in ct_timer_free()