Merge pull request zephyrproject-rtos#8 from FrameworkComputer/azalea…

….ibf_delay

azalea: add small delay for ibf data loss

Kconfig.zephyr

@@ -890,3 +890,10 @@ config THIRD_PARTY_CUSTOMIZED_DESIGN
 	help
 	  because framework use windows platform, will need change third
 	  party function to assort windows.
+
+config THIRD_PARTY_CUSTOMIZED_IBF_DELAY
+	bool "add delay for framework at subs ibf handle"
+	default n
+	help
+	  at framework have 8042 data loss issue, need to add a small delay
+	  to make sure we wouldn't loss data in the ibf handle.

drivers/espi/host_subs_npcx.c

@@ -249,8 +249,14 @@ static void host_kbc_ibf_isr(const void *arg)
 	struct espi_evt_data_kbc *kbc_evt =
 				(struct espi_evt_data_kbc *)&evt.evt_data;
 
+#if defined(CONFIG_THIRD_PARTY_CUSTOMIZED_IBF_DELAY)
+	k_busy_wait(4);
+#endif
 	/* KBC Input Buffer Full event */
 	kbc_evt->evt = HOST_KBC_EVT_IBF;
+#if defined(CONFIG_THIRD_PARTY_CUSTOMIZED_IBF_DELAY)
+	k_busy_wait(4);
+#endif
 #if defined(CONFIG_THIRD_PARTY_CUSTOMIZED_DESIGN)
 	/* The data in KBC Input Buffer */
 	kbc_evt->data = inst_kbc->SHIKMDI;
@@ -265,6 +271,9 @@ static void host_kbc_ibf_isr(const void *arg)
 	 */
 	kbc_evt->type = IS_BIT_SET(inst_kbc->HIKMST, NPCX_HIKMST_A2);
 
+#if defined(CONFIG_THIRD_PARTY_CUSTOMIZED_IBF_DELAY)
+	k_busy_wait(40);
+#endif
 	LOG_DBG("%s: kbc data 0x%02x", __func__, evt.evt_data);
 	espi_send_callbacks(host_sub_data.callbacks, host_sub_data.host_bus_dev,
 							evt);