16 #include "ipa.h"
23  * DOC: IPA Power Management
25  * The IPA hardware is enabled when the IPA core clock and all the
38  * enum ipa_power_flag - IPA power flags
54  * struct ipa_power - IPA power management information
55  * @dev:		IPA device pointer
56  * @core:		IPA core clock
73 /* Initialize interconnects required for IPA operation */
114 /* Enable IPA power, enabling interconnects and the core clock */
115 static int ipa_power_enable(struct ipa *ipa)  in ipa_power_enable()  argument
117 	struct ipa_power *power = ipa->power;  in ipa_power_enable()
135 static void ipa_power_disable(struct ipa *ipa)  in ipa_power_disable()  argument
137 	struct ipa_power *power = ipa->power;  in ipa_power_disable()
146 	struct ipa *ipa = dev_get_drvdata(dev);  in ipa_runtime_suspend()  local
149 	if (ipa->setup_complete) {  in ipa_runtime_suspend()
150 		__clear_bit(IPA_POWER_FLAG_RESUMED, ipa->power->flags);  in ipa_runtime_suspend()
151 		ipa_endpoint_suspend(ipa);  in ipa_runtime_suspend()
152 		gsi_suspend(&ipa->gsi);  in ipa_runtime_suspend()
155 	ipa_power_disable(ipa);  in ipa_runtime_suspend()
162 	struct ipa *ipa = dev_get_drvdata(dev);  in ipa_runtime_resume()  local
165 	ret = ipa_power_enable(ipa);  in ipa_runtime_resume()
170 	if (ipa->setup_complete) {  in ipa_runtime_resume()
171 		gsi_resume(&ipa->gsi);  in ipa_runtime_resume()
172 		ipa_endpoint_resume(ipa);  in ipa_runtime_resume()
180 	struct ipa *ipa = dev_get_drvdata(dev);  in ipa_suspend()  local
182 	__set_bit(IPA_POWER_FLAG_SYSTEM, ipa->power->flags);  in ipa_suspend()
190 	 * irq wake. If wakeup is enabled for the IPA then the IRQ  in ipa_suspend()
193 	ipa_interrupt_irq_disable(ipa);  in ipa_suspend()
200 	struct ipa *ipa = dev_get_drvdata(dev);  in ipa_resume()  local
205 	__clear_bit(IPA_POWER_FLAG_SYSTEM, ipa->power->flags);  in ipa_resume()
211 	ipa_interrupt_irq_enable(ipa);  in ipa_resume()
216 /* Return the current IPA core clock rate */
217 u32 ipa_core_clock_rate(struct ipa *ipa)  in ipa_core_clock_rate()  argument
219 	return ipa->power ? (u32)clk_get_rate(ipa->power->core) : 0;  in ipa_core_clock_rate()
222 void ipa_power_suspend_handler(struct ipa *ipa, enum ipa_irq_id irq_id)  in ipa_power_suspend_handler()  argument
224 	/* To handle an IPA interrupt we will have resumed the hardware  in ipa_power_suspend_handler()
228 	if (!__test_and_set_bit(IPA_POWER_FLAG_RESUMED, ipa->power->flags))  in ipa_power_suspend_handler()
229 		if (test_bit(IPA_POWER_FLAG_SYSTEM, ipa->power->flags))  in ipa_power_suspend_handler()
230 			pm_wakeup_dev_event(&ipa->pdev->dev, 0, true);  in ipa_power_suspend_handler()
233 	ipa_interrupt_suspend_clear_all(ipa->interrupt);  in ipa_power_suspend_handler()
259 void ipa_power_modem_queue_stop(struct ipa *ipa)  in ipa_power_modem_queue_stop()  argument
261 	struct ipa_power *power = ipa->power;  in ipa_power_modem_queue_stop()
267 		netif_stop_queue(ipa->modem_netdev);  in ipa_power_modem_queue_stop()
279 void ipa_power_modem_queue_wake(struct ipa *ipa)  in ipa_power_modem_queue_wake()  argument
281 	struct ipa_power *power = ipa->power;  in ipa_power_modem_queue_wake()
288 		netif_wake_queue(ipa->modem_netdev);  in ipa_power_modem_queue_wake()
295 void ipa_power_modem_queue_active(struct ipa *ipa)  in ipa_power_modem_queue_active()  argument
297 	clear_bit(IPA_POWER_FLAG_STARTED, ipa->power->flags);  in ipa_power_modem_queue_active()
323 void ipa_power_retention(struct ipa *ipa, bool enable)  in ipa_power_retention()  argument
326 	struct ipa_power *power = ipa->power;  in ipa_power_retention()
338 int ipa_power_setup(struct ipa *ipa)  in ipa_power_setup()  argument
342 	ipa_interrupt_enable(ipa, IPA_IRQ_TX_SUSPEND);  in ipa_power_setup()
344 	ret = device_init_wakeup(&ipa->pdev->dev, true);  in ipa_power_setup()
346 		ipa_interrupt_disable(ipa, IPA_IRQ_TX_SUSPEND);  in ipa_power_setup()
351 void ipa_power_teardown(struct ipa *ipa)  in ipa_power_teardown()  argument
353 	(void)device_init_wakeup(&ipa->pdev->dev, false);  in ipa_power_teardown()
354 	ipa_interrupt_disable(ipa, IPA_IRQ_TX_SUSPEND);  in ipa_power_teardown()
357 /* Initialize IPA power management */