Merge pull request #693 from FrameworkComputer/azalea.keyboard_issue

azalea: fixed PS2 yellow band

Author: kiram9

zephyr/program/lotus/azalea/project.conf

@@ -24,3 +24,6 @@ CONFIG_PLATFORM_EC_PWM_KBLIGHT=y
 CONFIG_PLATFORM_EC_KEYBOARD_VIVALDI=n
 CONFIG_PLATFORM_EC_KEYBOARD_CUSTOMIZATION=y
 CONFIG_PLATFORM_KEYBOARD_SCANCODE_CALLBACK=y
+
+# Thrid party change
+CONFIG_THIRD_PARTY_CUSTOMIZED_DESIGN=y

zephyr/shim/src/espi.c

@@ -644,6 +644,67 @@ void lpc_aux_put_char(uint8_t chr, int send_irq)
 	LOG_INF("AUX put %02x", kb_char);
 }
 
+#ifdef CONFIG_THIRD_PARTY_CUSTOMIZED_DESIGN
+
+/*
+ * this can delay EC release irq and clear IBF
+ * it will let host not send data too fast, make EC
+ * have time to process 8042 data and also not lose data
+ * after delay finish read HIKMDI clear IBF data and release 8042 irq
+ */
+static void lpc_kbc_process(void)
+{
+	int rv;
+	uint32_t status;
+
+	rv = espi_read_lpc_request(espi_dev, E8042_CLEAR_IBF, &status);
+	if (rv) {
+		LOG_ERR("ESPI read failed: E8042_CLEAR_IBF = %d", rv);
+		return;
+	}
+
+	rv = espi_write_lpc_request(espi_dev, E8042_RESUME_IRQ, 0);
+	if (rv) {
+		LOG_ERR("ESPI write failed: E8042_RESUME_IRQ = %d", rv);
+	}
+}
+DECLARE_DEFERRED(lpc_kbc_process);
+
+static void kbc_ibf_obe_handler(uint32_t data)
+{
+#ifdef HAS_TASK_KEYPROTO
+	uint8_t is_ibf = is_8042_ibf(data);
+	uint32_t status = I8042_AUX_DATA;
+	int rv;
+
+	if (is_ibf == HOST_KBC_EVT_IBF) {
+
+		/* put data to queue and trigger 8042 task*/
+		keyboard_host_write(get_8042_data(data), get_8042_type(data));
+
+		/* Pause 8042 irq let KB task process data */
+		rv = espi_write_lpc_request(espi_dev, E8042_PAUSE_IRQ, 0);
+		if (rv) {
+			LOG_ERR("ESPI write failed: E8042_PAUSE_IRQ = %d", rv);
+		}
+
+		hook_call_deferred(&lpc_kbc_process_data, 200);
+
+	} else if (IS_ENABLED(CONFIG_8042_AUX)) {
+		rv = espi_write_lpc_request(espi_dev, E8042_CLEAR_FLAG,
+					    &status);
+		if (rv) {
+			LOG_ERR("ESPI write failed: E8042_CLEAR_FLAG = %d", rv);
+		}
+	}
+
+	/* OBE data coming */
+	if (is_ibf != HOST_KBC_EVT_IBF)
+		task_wake(TASK_ID_KEYPROTO);
+
+#endif
+}
+#else
 static void kbc_ibf_obe_handler(uint32_t data)
 {
 #ifdef HAS_TASK_KEYPROTO
@@ -663,6 +724,7 @@ static void kbc_ibf_obe_handler(uint32_t data)
 	task_wake(TASK_ID_KEYPROTO);
 #endif
 }
+#endif
 
 int lpc_keyboard_input_pending(void)
 {