15 #include "ipa.h"
20  * DOC: IPA SMP2P communication with the modem
23  * the modem.  The IPA driver uses this for two purposes:  to enable the modem
25  * state of the IPA clock in the event of a crash.
29  * latter case, the modem uses an SMP2P interrupt to tell the AP IPA driver
32  * The modem is also able to inquire about the current state of the IPA
37  * is set, and at that time records whether the AP has the IPA clock enabled.
44  * struct ipa_smp2p - IPA SMP2P information
45  * @ipa:		IPA pointer
51  * @clock_query_irq:	IPA interrupt triggered by modem for clock query
52  * @setup_ready_irq:	IPA interrupt triggered by modem to signal GSI ready
53  * @clock_on:		Whether IPA clock is on
60 	struct ipa *ipa;  member
75  * ipa_smp2p_notify() - use SMP2P to tell modem about IPA clock state
79  * the modem clock query IPA interrupt) or whenever the AP is shutting down
81  * whether the IPA clock is running, and the other indicating the first bit
92 	smp2p->clock_on = ipa_clock_get_additional(smp2p->ipa);  in ipa_smp2p_notify()
107 /* Threaded IRQ handler for modem "ipa-clock-query" SMP2P interrupt */
127 		ipa_uc_panic_notifier(smp2p->ipa);  in ipa_smp2p_panic_notifier()
134 	/* IPA panic handler needs to run before modem shuts down */  in ipa_smp2p_panic_notifier_register()
148 /* Threaded IRQ handler for modem "ipa-setup-ready" SMP2P interrupt */
158 		ret = ipa_setup(smp2p->ipa);  in ipa_smp2p_modem_setup_ready_isr()
160 			dev_err(&smp2p->ipa->pdev->dev,  in ipa_smp2p_modem_setup_ready_isr()
174 	struct device *dev = &smp2p->ipa->pdev->dev;  in ipa_smp2p_irq_init()
178 	ret = platform_get_irq_byname(smp2p->ipa->pdev, name);  in ipa_smp2p_irq_init()
201 static void ipa_smp2p_clock_release(struct ipa *ipa)  in ipa_smp2p_clock_release()  argument
203 	if (!ipa->smp2p->clock_on)  in ipa_smp2p_clock_release()
206 	ipa_clock_put(ipa);  in ipa_smp2p_clock_release()
207 	ipa->smp2p->clock_on = false;  in ipa_smp2p_clock_release()
210 /* Initialize the IPA SMP2P subsystem */
211 int ipa_smp2p_init(struct ipa *ipa, bool modem_init)  in ipa_smp2p_init()  argument
214 	struct device *dev = &ipa->pdev->dev;  in ipa_smp2p_init()
221 	valid_state = qcom_smem_state_get(dev, "ipa-clock-enabled-valid",  in ipa_smp2p_init()
228 	enabled_state = qcom_smem_state_get(dev, "ipa-clock-enabled",  in ipa_smp2p_init()
239 	smp2p->ipa = ipa;  in ipa_smp2p_init()
251 	ipa->smp2p = smp2p;  in ipa_smp2p_init()
253 	ret = ipa_smp2p_irq_init(smp2p, "ipa-clock-query",  in ipa_smp2p_init()
265 		ret = ipa_smp2p_irq_init(smp2p, "ipa-setup-ready",  in ipa_smp2p_init()
279 	ipa->smp2p = NULL;  in ipa_smp2p_init()
286 void ipa_smp2p_exit(struct ipa *ipa)  in ipa_smp2p_exit()  argument
288 	struct ipa_smp2p *smp2p = ipa->smp2p;  in ipa_smp2p_exit()
295 	ipa_smp2p_clock_release(ipa);  in ipa_smp2p_exit()
296 	ipa->smp2p = NULL;  in ipa_smp2p_exit()
301 void ipa_smp2p_disable(struct ipa *ipa)  in ipa_smp2p_disable()  argument
303 	struct ipa_smp2p *smp2p = ipa->smp2p;  in ipa_smp2p_disable()
316 void ipa_smp2p_notify_reset(struct ipa *ipa)  in ipa_smp2p_notify_reset()  argument
318 	struct ipa_smp2p *smp2p = ipa->smp2p;  in ipa_smp2p_notify_reset()
324 	ipa_smp2p_clock_release(ipa);  in ipa_smp2p_notify_reset()