148 static void ct_xfitimer_irq_rearm(struct ct_timer *atimer, int ticks)  in ct_xfitimer_irq_rearm()  argument
150 	struct hw *hw = atimer->atc->hw;  in ct_xfitimer_irq_rearm()
154 	if (!atimer->running)  in ct_xfitimer_irq_rearm()
156 	atimer->running = 1;  in ct_xfitimer_irq_rearm()
159 static void ct_xfitimer_irq_stop(struct ct_timer *atimer)  in ct_xfitimer_irq_stop()  argument
161 	if (atimer->running) {  in ct_xfitimer_irq_stop()
162 		struct hw *hw = atimer->atc->hw;  in ct_xfitimer_irq_stop()
165 		atimer->running = 0;  in ct_xfitimer_irq_stop()
169 static inline unsigned int ct_xfitimer_get_wc(struct ct_timer *atimer)  in ct_xfitimer_get_wc()  argument
171 	struct hw *hw = atimer->atc->hw;  in ct_xfitimer_get_wc()
183 static int ct_xfitimer_reprogram(struct ct_timer *atimer, int can_update)  in ct_xfitimer_reprogram()  argument
190 	if (list_empty(&atimer->running_head)) {  in ct_xfitimer_reprogram()
191 		ct_xfitimer_irq_stop(atimer);  in ct_xfitimer_reprogram()
192 		atimer->reprogram = 0; /* clear flag */  in ct_xfitimer_reprogram()
196 	wc = ct_xfitimer_get_wc(atimer);  in ct_xfitimer_reprogram()
197 	diff = wc - atimer->wc;  in ct_xfitimer_reprogram()
198 	atimer->wc = wc;  in ct_xfitimer_reprogram()
199 	list_for_each_entry(ti, &atimer->running_head, running_list) {  in ct_xfitimer_reprogram()
227 	ct_xfitimer_irq_rearm(atimer, min_intr);  in ct_xfitimer_reprogram()
228 	atimer->reprogram = 0; /* clear flag */  in ct_xfitimer_reprogram()
233 static void ct_xfitimer_check_period(struct ct_timer *atimer)  in ct_xfitimer_check_period()  argument
238 	spin_lock_irqsave(&atimer->list_lock, flags);  in ct_xfitimer_check_period()
239 	list_for_each_entry(ti, &atimer->instance_head, instance_list) {  in ct_xfitimer_check_period()
245 	spin_unlock_irqrestore(&atimer->list_lock, flags);  in ct_xfitimer_check_period()
249 static void ct_xfitimer_callback(struct ct_timer *atimer)  in ct_xfitimer_callback()  argument
254 	spin_lock_irqsave(&atimer->lock, flags);  in ct_xfitimer_callback()
255 	atimer->irq_handling = 1;  in ct_xfitimer_callback()
257 		update = ct_xfitimer_reprogram(atimer, 1);  in ct_xfitimer_callback()
258 		spin_unlock(&atimer->lock);  in ct_xfitimer_callback()
260 			ct_xfitimer_check_period(atimer);  in ct_xfitimer_callback()
261 		spin_lock(&atimer->lock);  in ct_xfitimer_callback()
262 	} while (atimer->reprogram);  in ct_xfitimer_callback()
263 	atimer->irq_handling = 0;  in ct_xfitimer_callback()
264 	spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_callback()
276 static void ct_xfitimer_update(struct ct_timer *atimer)  in ct_xfitimer_update()  argument
280 	spin_lock_irqsave(&atimer->lock, flags);  in ct_xfitimer_update()
281 	if (atimer->irq_handling) {  in ct_xfitimer_update()
283 		atimer->reprogram = 1;  in ct_xfitimer_update()
284 		spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_update()
288 	ct_xfitimer_irq_stop(atimer);  in ct_xfitimer_update()
289 	ct_xfitimer_reprogram(atimer, 0);  in ct_xfitimer_update()
290 	spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_update()
295 	struct ct_timer *atimer = ti->timer_base;  in ct_xfitimer_start()  local
298 	spin_lock_irqsave(&atimer->lock, flags);  in ct_xfitimer_start()
300 		atimer->wc = ct_xfitimer_get_wc(atimer);  in ct_xfitimer_start()
303 	list_add(&ti->running_list, &atimer->running_head);  in ct_xfitimer_start()
304 	spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_start()
305 	ct_xfitimer_update(atimer);  in ct_xfitimer_start()
310 	struct ct_timer *atimer = ti->timer_base;  in ct_xfitimer_stop()  local
313 	spin_lock_irqsave(&atimer->lock, flags);  in ct_xfitimer_stop()
316 	spin_unlock_irqrestore(&atimer->lock, flags);  in ct_xfitimer_stop()
317 	ct_xfitimer_update(atimer);  in ct_xfitimer_stop()
320 static void ct_xfitimer_free_global(struct ct_timer *atimer)  in ct_xfitimer_free_global()  argument
322 	ct_xfitimer_irq_stop(atimer);  in ct_xfitimer_free_global()
338 ct_timer_instance_new(struct ct_timer *atimer, struct ct_atc_pcm *apcm)  in ct_timer_instance_new()  argument
348 	ti->timer_base = atimer;  in ct_timer_instance_new()
351 	if (atimer->ops->init)  in ct_timer_instance_new()
352 		atimer->ops->init(ti);  in ct_timer_instance_new()
354 	spin_lock_irq(&atimer->list_lock);  in ct_timer_instance_new()
355 	list_add(&ti->instance_list, &atimer->instance_head);  in ct_timer_instance_new()
356 	spin_unlock_irq(&atimer->list_lock);  in ct_timer_instance_new()
371 	struct ct_timer *atimer = ti->timer_base;  in ct_timer_start()  local
372 	atimer->ops->start(ti);  in ct_timer_start()
377 	struct ct_timer *atimer = ti->timer_base;  in ct_timer_stop()  local
378 	atimer->ops->stop(ti);  in ct_timer_stop()
383 	struct ct_timer *atimer = ti->timer_base;  in ct_timer_instance_free()  local
385 	atimer->ops->stop(ti); /* to be sure */  in ct_timer_instance_free()
386 	if (atimer->ops->free_instance)  in ct_timer_instance_free()
387 		atimer->ops->free_instance(ti);  in ct_timer_instance_free()
389 	spin_lock_irq(&atimer->list_lock);  in ct_timer_instance_free()
391 	spin_unlock_irq(&atimer->list_lock);  in ct_timer_instance_free()
411 	struct ct_timer *atimer;  in ct_timer_new()  local
414 	atimer = kzalloc(sizeof(*atimer), GFP_KERNEL);  in ct_timer_new()
415 	if (!atimer)  in ct_timer_new()
417 	spin_lock_init(&atimer->lock);  in ct_timer_new()
418 	spin_lock_init(&atimer->list_lock);  in ct_timer_new()
419 	INIT_LIST_HEAD(&atimer->instance_head);  in ct_timer_new()
420 	INIT_LIST_HEAD(&atimer->running_head);  in ct_timer_new()
421 	atimer->atc = atc;  in ct_timer_new()
425 		atimer->ops = &ct_xfitimer_ops;  in ct_timer_new()
426 		hw->irq_callback_data = atimer;  in ct_timer_new()
430 		atimer->ops = &ct_systimer_ops;  in ct_timer_new()
432 	return atimer;  in ct_timer_new()
435 void ct_timer_free(struct ct_timer *atimer)  in ct_timer_free()  argument
437 	struct hw *hw = atimer->atc->hw;  in ct_timer_free()
439 	if (atimer->ops->free_global)  in ct_timer_free()
440 		atimer->ops->free_global(atimer);  in ct_timer_free()
441 	kfree(atimer);  in ct_timer_free()