17 #include "ipa.h"
21  * DOC: IPA SMP2P communication with the modem
24  * the modem.  The IPA driver uses this for two purposes:  to enable the modem
26  * state of IPA power in the event of a crash.
30  * latter case, the modem uses an SMP2P interrupt to tell the AP IPA driver
33  * The modem is also able to inquire about the current state of IPA
38  * at that time records whether the AP has IPA power enabled.
45  * struct ipa_smp2p - IPA SMP2P information
46  * @ipa:		IPA pointer
52  * @clock_query_irq:	IPA interrupt triggered by modem for power query
53  * @setup_ready_irq:	IPA interrupt triggered by modem to signal GSI ready
54  * @power_on:		Whether IPA power is on
61 	struct ipa *ipa;  member
76  * ipa_smp2p_notify() - use SMP2P to tell modem about IPA power state
80  * the modem power query IPA interrupt) or whenever the AP is shutting down
82  * whether the IPA power is on, and the other indicating the first bit
94 	dev = &smp2p->ipa->pdev->dev;  in ipa_smp2p_notify()
97 	/* Signal whether the IPA power is enabled */  in ipa_smp2p_notify()
110 /* Threaded IRQ handler for modem "ipa-clock-query" SMP2P interrupt */
130 		ipa_uc_panic_notifier(smp2p->ipa);  in ipa_smp2p_panic_notifier()
137 	/* IPA panic handler needs to run before modem shuts down */  in ipa_smp2p_panic_notifier_register()
151 /* Threaded IRQ handler for modem "ipa-setup-ready" SMP2P interrupt */
165 	dev = &smp2p->ipa->pdev->dev;  in ipa_smp2p_modem_setup_ready_isr()
173 	ret = ipa_setup(smp2p->ipa);  in ipa_smp2p_modem_setup_ready_isr()
189 	struct device *dev = &smp2p->ipa->pdev->dev;  in ipa_smp2p_irq_init()
193 	ret = platform_get_irq_byname(smp2p->ipa->pdev, name);  in ipa_smp2p_irq_init()
213 static void ipa_smp2p_power_release(struct ipa *ipa)  in ipa_smp2p_power_release()  argument
215 	struct device *dev = &ipa->pdev->dev;  in ipa_smp2p_power_release()
217 	if (!ipa->smp2p->power_on)  in ipa_smp2p_power_release()
222 	ipa->smp2p->power_on = false;  in ipa_smp2p_power_release()
225 /* Initialize the IPA SMP2P subsystem */
226 int ipa_smp2p_init(struct ipa *ipa, bool modem_init)  in ipa_smp2p_init()  argument
229 	struct device *dev = &ipa->pdev->dev;  in ipa_smp2p_init()
236 	valid_state = qcom_smem_state_get(dev, "ipa-clock-enabled-valid",  in ipa_smp2p_init()
243 	enabled_state = qcom_smem_state_get(dev, "ipa-clock-enabled",  in ipa_smp2p_init()
254 	smp2p->ipa = ipa;  in ipa_smp2p_init()
266 	ipa->smp2p = smp2p;  in ipa_smp2p_init()
268 	ret = ipa_smp2p_irq_init(smp2p, "ipa-clock-query",  in ipa_smp2p_init()
280 		ret = ipa_smp2p_irq_init(smp2p, "ipa-setup-ready",  in ipa_smp2p_init()
294 	ipa->smp2p = NULL;  in ipa_smp2p_init()
301 void ipa_smp2p_exit(struct ipa *ipa)  in ipa_smp2p_exit()  argument
303 	struct ipa_smp2p *smp2p = ipa->smp2p;  in ipa_smp2p_exit()
310 	ipa_smp2p_power_release(ipa);  in ipa_smp2p_exit()
311 	ipa->smp2p = NULL;  in ipa_smp2p_exit()
316 void ipa_smp2p_disable(struct ipa *ipa)  in ipa_smp2p_disable()  argument
318 	struct ipa_smp2p *smp2p = ipa->smp2p;  in ipa_smp2p_disable()
331 void ipa_smp2p_notify_reset(struct ipa *ipa)  in ipa_smp2p_notify_reset()  argument
333 	struct ipa_smp2p *smp2p = ipa->smp2p;  in ipa_smp2p_notify_reset()
339 	ipa_smp2p_power_release(ipa);  in ipa_smp2p_notify_reset()