msm: IPA: add functional flag for MHI Proxy

Android Q update, enable MHI Proxy on msm-4.14 master branch.
Add functional flag to only call MHI proxy functions when MHI
proxy functional flag enabled.

Change-Id: I342d0c9aefcf958226a0b697e6e8fce68bf81d15
Signed-off-by: Bojun Pan <[email protected]>

drivers/platform/msm/ipa/ipa_v3/ipa.c

@@ -7464,6 +7464,7 @@ static int ipa3_pre_init(const struct ipa3_plat_drv_res *resource_p,
 	ipa3_ctx->tx_wrapper_cache_max_size = get_tx_wrapper_cache_size(
 			resource_p->tx_wrapper_cache_max_size);
 	ipa3_ctx->ipa_config_is_auto = resource_p->ipa_config_is_auto;
+	ipa3_ctx->ipa_mhi_proxy = resource_p->ipa_mhi_proxy;
 
 	if (resource_p->gsi_fw_file_name) {
 		ipa3_ctx->gsi_fw_file_name =
@@ -8512,6 +8513,13 @@ static int get_ipa_dts_configuration(struct platform_device *pdev,
 	else
 		IPADBG("uC IPA FW file not defined. Using default one\n");
 
+	ipa_drv_res->ipa_mhi_proxy =
+		of_property_read_bool(pdev->dev.of_node,
+		"qcom,ipa-mhi-proxy");
+	IPADBG(": Use mhi proxy = %s\n",
+		ipa_drv_res->ipa_mhi_proxy
+		? "True" : "False");
+
 	/* Get IPA wrapper address */
 	result = of_property_read_u32(pdev->dev.of_node, "qcom,ipa-cfg-offset",
 		&ipa_drv_res->ipa_cfg_offset);

drivers/platform/msm/ipa/ipa_v3/ipa_i.h

@@ -2172,6 +2172,7 @@ struct ipa3_context {
 	struct ipa3_eth_info
 		eth_info[IPA_ETH_CLIENT_MAX][IPA_ETH_INST_ID_MAX];
 	u32 ipa_wan_aggr_pkt_cnt;
+	bool ipa_mhi_proxy;
 };
 
 struct ipa3_plat_drv_res {
@@ -2239,6 +2240,7 @@ struct ipa3_plat_drv_res {
 	const char *uc_fw_file_name;
 	u32 tx_wrapper_cache_max_size;
 	u32 ipa_wan_aggr_pkt_cnt;
+	bool ipa_mhi_proxy;
 };
 
 /**

drivers/platform/msm/ipa/ipa_v3/rmnet_ipa.c

@@ -2896,7 +2896,8 @@ static int ipa3_lcl_mdm_ssr_notifier_cb(struct notifier_block *this,
 		ipa_stop_polling_stats();
 		if (atomic_read(&rmnet_ipa3_ctx->is_initialized))
 			platform_driver_unregister(&rmnet_ipa_driver);
-		imp_handle_modem_shutdown();
+		if (ipa3_ctx->ipa_mhi_proxy)
+			imp_handle_modem_shutdown();
 		if (atomic_read(&rmnet_ipa3_ctx->is_ssr) &&
 			ipa3_ctx_get_type(IPA_HW_TYPE) >= IPA_HW_v4_0)
 			ipa3_q6_post_shutdown_cleanup();
@@ -4284,7 +4285,12 @@ void ipa3_q6_handshake_complete(bool ssr_bootup)
 		 */
 		rmnet_ipa_get_network_stats_and_update();
 	}
+
+	if (ipa3_ctx->ipa_mhi_proxy)
 		imp_handle_modem_ready();
+
+	if (ipa3_ctx->ipa_config_is_mhi)
+		ipa_send_mhi_endp_ind_to_modem();
 }
 
 static inline bool rmnet_ipa3_check_any_client_inited