Merge "msm: ipa3: workaround for HW limitation suspend IRQ not generated" (211a4610) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/platform/msm/ipa/ipa_api.c

+17 −0

Original line number	Diff line number	Diff line
		@@ -2288,6 +2288,23 @@ int ipa_remove_interrupt_handler(enum ipa_irq_type interrupt)
		}
		EXPORT_SYMBOL(ipa_remove_interrupt_handler);

		/**
		* ipa_restore_suspend_handler() - restores the original suspend IRQ handler
		* as it was registered in the IPA init sequence.
		* Return codes:
		* 0: success
		* -EPERM: failed to remove current handler or failed to add original handler
		* */
		int ipa_restore_suspend_handler(void)
		{
		int ret;

		IPA_API_DISPATCH_RETURN(ipa_restore_suspend_handler);

		return ret;
		}
		EXPORT_SYMBOL(ipa_restore_suspend_handler);

		/**
		* ipa_bam_reg_dump() - Dump selected BAM registers for IPA and DMA-BAM
		*

+2 −0

Original line number	Diff line number	Diff line
		@@ -282,6 +282,8 @@ struct ipa_api_controller {

		int (*ipa_remove_interrupt_handler)(enum ipa_irq_type interrupt);

		int (*ipa_restore_suspend_handler)(void);

		void (*ipa_bam_reg_dump)(void);

		int (*ipa_get_ep_mapping)(enum ipa_client_type client);

+27 −0

Original line number	Diff line number	Diff line
		@@ -3042,6 +3042,33 @@ void ipa_suspend_handler(enum ipa_irq_type interrupt,
		}
		}

		/**
		* ipa2_restore_suspend_handler() - restores the original suspend IRQ handler
		* as it was registered in the IPA init sequence.
		* Return codes:
		* 0: success
		* -EPERM: failed to remove current handler or failed to add original handler
		* */
		int ipa2_restore_suspend_handler(void)
		{
		int result = 0;

		result = ipa2_remove_interrupt_handler(IPA_TX_SUSPEND_IRQ);
		if (result) {
		IPAERR("remove handler for suspend interrupt failed\n");
		return -EPERM;
		}

		result = ipa2_add_interrupt_handler(IPA_TX_SUSPEND_IRQ,
		ipa_suspend_handler, true, NULL);
		if (result) {
		IPAERR("register handler for suspend interrupt failed\n");
		result = -EPERM;
		}

		return result;
		}

		static int apps_cons_release_resource(void)
		{
		return 0;

+1 −0

Original line number	Diff line number	Diff line
		@@ -1975,4 +1975,5 @@ void ipa_suspend_apps_pipes(bool suspend);
		void ipa_update_repl_threshold(enum ipa_client_type ipa_client);
		void ipa_flow_control(enum ipa_client_type ipa_client, bool enable,
		uint32_t qmap_id);
		int ipa2_restore_suspend_handler(void);
		#endif /* _IPA_I_H_ */

+1 −0

Original line number	Diff line number	Diff line
		@@ -278,6 +278,7 @@ int ipa2_remove_interrupt_handler(enum ipa_irq_type interrupt)
		return -EFAULT;
		}

		kfree(ipa_interrupt_to_cb[irq_num].private_data);
		ipa_interrupt_to_cb[irq_num].deferred_flag = false;
		ipa_interrupt_to_cb[irq_num].handler = NULL;
		ipa_interrupt_to_cb[irq_num].private_data = NULL;