base/power/clock_ops.c

145  * @ce: PM clock entry corresponding to the clock.
147 static inline void __pm_clk_enable(struct device *dev, struct pm_clock_entry *ce)
151 	switch (ce->status) {
153 		ret = clk_prepare_enable(ce->clk);
156 		ret = clk_enable(ce->clk);
162 		ce->status = PCE_STATUS_ENABLED;
165 			__func__, ce->clk, ret);
171  * @ce: PM clock entry corresponding to the clock.
173 static void pm_clk_acquire(struct device *dev, struct pm_clock_entry *ce)
175 	if (!ce->clk)
176 		ce->clk = clk_get(dev, ce->con_id);
177 	if (IS_ERR(ce->clk)) {
178 		ce->status = PCE_STATUS_ERROR;
180 	} else if (clk_is_enabled_when_prepared(ce->clk)) {
182 		ce->status = PCE_STATUS_ACQUIRED;
183 		ce->enabled_when_prepared = true;
184 	} else if (clk_prepare(ce->clk)) {
185 		ce->status = PCE_STATUS_ERROR;
189 		ce->status = PCE_STATUS_PREPARED;
192 		ce->clk, ce->con_id);
199 	struct pm_clock_entry *ce;
204 	ce = kzalloc(sizeof(*ce), GFP_KERNEL);
205 	if (!ce)
209 		ce->con_id = kstrdup(con_id, GFP_KERNEL);
210 		if (!ce->con_id) {
211 			kfree(ce);
216 			kfree(ce);
219 		ce->clk = clk;
222 	pm_clk_acquire(dev, ce);
225 	list_add_tail(&ce->node, &psd->clock_list);
226 	if (ce->enabled_when_prepared)
352  * @ce: PM clock entry to destroy.
354 static void __pm_clk_remove(struct pm_clock_entry *ce)
356 	if (!ce)
359 	switch (ce->status) {
361 		clk_disable(ce->clk);
364 		clk_unprepare(ce->clk);
368 		if (!IS_ERR(ce->clk))
369 			clk_put(ce->clk);
375 	kfree(ce->con_id);
376 	kfree(ce);
390 	struct pm_clock_entry *ce;
397 	list_for_each_entry(ce, &psd->clock_list, node) {
398 		if (!con_id && !ce->con_id)
400 		else if (!con_id || !ce->con_id)
402 		else if (!strcmp(con_id, ce->con_id))
410 	list_del(&ce->node);
411 	if (ce->enabled_when_prepared)
415 	__pm_clk_remove(ce);
430 	struct pm_clock_entry *ce;
437 	list_for_each_entry(ce, &psd->clock_list, node) {
438 		if (clk == ce->clk)
446 	list_del(&ce->node);
447 	if (ce->enabled_when_prepared)
451 	__pm_clk_remove(ce);
497 	struct pm_clock_entry *ce, *c;
507 	list_for_each_entry_safe_reverse(ce, c, &psd->clock_list, node)
508 		list_move(&ce->node, &list);
515 	list_for_each_entry_safe_reverse(ce, c, &list, node) {
516 		list_del(&ce->node);
517 		__pm_clk_remove(ce);
546 	struct pm_clock_entry *ce;
559 	list_for_each_entry_reverse(ce, &psd->clock_list, node) {
560 		if (ce->status == PCE_STATUS_ENABLED) {
561 			if (ce->enabled_when_prepared) {
562 				clk_disable_unprepare(ce->clk);
563 				ce->status = PCE_STATUS_ACQUIRED;
565 				clk_disable(ce->clk);
566 				ce->status = PCE_STATUS_PREPARED;
584 	struct pm_clock_entry *ce;
597 	list_for_each_entry(ce, &psd->clock_list, node)
598 		__pm_clk_enable(dev, ce);