From 2720bb9037270b9480660bc238a8a15768811232 Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jeremy@system76.com>
Date: Fri, 25 Jun 2021 15:25:01 -0600
Subject: [PATCH] Use PME virtual wire for suspend/resume

---
 src/board/system76/common/pmc.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/board/system76/common/pmc.c b/src/board/system76/common/pmc.c
index 521418d..539bb22 100644
--- a/src/board/system76/common/pmc.c
+++ b/src/board/system76/common/pmc.c
@@ -71,8 +71,17 @@ bool pmc_sci(struct Pmc * pmc, uint8_t sci) {
 
 void pmc_swi(void) {
 #if EC_ESPI
-    // Use SCI interrupt
-    pmc_sci_interrupt();
+    // Start PME interrupt
+    vw_set(&VW_PME_N, VWS_LOW);
+
+    // Delay T_HOLD (value assumed)
+    delay_us(65);
+
+    // Stop PME interrupt
+    vw_set(&VW_PME_N, VWS_HIGH);
+
+    // Delay T_HOLD (value assumed)
+    delay_us(65);
 #else // EC_ESPI
     // Start SWI interrupt
     gpio_set(&SWI_N, false);