From b4eeae3bda9ea0381477ab0a0b9d9ccde2526ebe Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jeremy@system76.com>
Date: Tue, 1 Oct 2019 13:40:29 -0600
Subject: [PATCH] Fixes for smbus

---
 src/board/system76/galp3-c/include/board/smbus.h |  8 ++++++++
 src/board/system76/galp3-c/main.c                |  4 +++-
 src/board/system76/galp3-c/smbus.c               | 11 +++++++++++
 src/ec/it8587e/include/ec/smbus.h                |  8 ++++++++
 4 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 src/board/system76/galp3-c/include/board/smbus.h
 create mode 100644 src/board/system76/galp3-c/smbus.c

diff --git a/src/board/system76/galp3-c/include/board/smbus.h b/src/board/system76/galp3-c/include/board/smbus.h
new file mode 100644
index 0000000..437844a
--- /dev/null
+++ b/src/board/system76/galp3-c/include/board/smbus.h
@@ -0,0 +1,8 @@
+#ifndef _BOARD_SMBUS_H
+#define _BOARD_SMBUS_H
+
+#include <ec/smbus.h>
+
+void smbus_init(void);
+
+#endif // _BOARD_SMBUS_H
diff --git a/src/board/system76/galp3-c/main.c b/src/board/system76/galp3-c/main.c
index c81f7b3..6fed4ed 100644
--- a/src/board/system76/galp3-c/main.c
+++ b/src/board/system76/galp3-c/main.c
@@ -10,6 +10,7 @@
 #include <board/pmc.h>
 #include <board/ps2.h>
 #include <board/pwm.h>
+#include <board/smbus.h>
 #include <common/macro.h>
 
 void external_0(void) __interrupt(0) {
@@ -43,8 +44,9 @@ void init(void) {
     pmc_init();
     kbscan_init();
     pwm_init();
+    smbus_init();
 
-    //TODO: INTC, PECI, SMBUS
+    //TODO: INTC, PECI
 
     // PECI information can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/design-guides/core-i7-lga-2011-guide.pdf
 }
diff --git a/src/board/system76/galp3-c/smbus.c b/src/board/system76/galp3-c/smbus.c
new file mode 100644
index 0000000..2d68b1f
--- /dev/null
+++ b/src/board/system76/galp3-c/smbus.c
@@ -0,0 +1,11 @@
+#include <board/smbus.h>
+
+void smbus_init(void) {
+    SMB4P7USL = 0x2F;
+    SMB4P0USL = 0x5A;
+    SMB300NS = 0x03;
+    SMB250NS = 0x30;
+    SMB25MS = 0x19;
+    SMB45P3USL = 0x5C;
+    SMB45P3USH = 0x01;
+}
diff --git a/src/ec/it8587e/include/ec/smbus.h b/src/ec/it8587e/include/ec/smbus.h
index 2f864bb..47e6656 100644
--- a/src/ec/it8587e/include/ec/smbus.h
+++ b/src/ec/it8587e/include/ec/smbus.h
@@ -42,5 +42,13 @@ volatile uint8_t __xdata __at(0x1C10) HOCTL2A;
 // SMCLK timing setting for channel A
 volatile uint8_t __xdata __at(0x1C10) SCLKTSA;
 
+// Timing registers
+volatile uint8_t __xdata __at(0x1C22) SMB4P7USL;
+volatile uint8_t __xdata __at(0x1C23) SMB4P0USL;
+volatile uint8_t __xdata __at(0x1C24) SMB300NS;
+volatile uint8_t __xdata __at(0x1C25) SMB250NS;
+volatile uint8_t __xdata __at(0x1C26) SMB25MS;
+volatile uint8_t __xdata __at(0x1C27) SMB45P3USL;
+volatile uint8_t __xdata __at(0x1C28) SMB45P3USH;
 
 #endif // _EC_SMBUS_H