From 5cd6f77e2ab40dfe175f7661873ddbb1d77c73a1 Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jeremy@system76.com>
Date: Tue, 28 Jan 2020 14:59:54 -0700
Subject: [PATCH] Add DAC initialization

---
 src/board/system76/galp3-c/dac.c               |  8 ++++++++
 src/board/system76/galp3-c/gpio.c              |  2 +-
 src/board/system76/galp3-c/include/board/dac.h |  8 ++++++++
 src/board/system76/galp3-c/main.c              | 11 +++++++----
 4 files changed, 24 insertions(+), 5 deletions(-)
 create mode 100644 src/board/system76/galp3-c/dac.c
 create mode 100644 src/board/system76/galp3-c/include/board/dac.h

diff --git a/src/board/system76/galp3-c/dac.c b/src/board/system76/galp3-c/dac.c
new file mode 100644
index 0000000..52f1bd6
--- /dev/null
+++ b/src/board/system76/galp3-c/dac.c
@@ -0,0 +1,8 @@
+#include <board/dac.h>
+
+void dac_init(void) {
+    // Enable DAC5, used for KBLIGHT_ADJ
+    DACPDREG &= ~(1 << 5);
+    // Set DAC5 to 0V
+    DACDAT5 = 0;
+}
diff --git a/src/board/system76/galp3-c/gpio.c b/src/board/system76/galp3-c/gpio.c
index c9a882c..b8f11e1 100644
--- a/src/board/system76/galp3-c/gpio.c
+++ b/src/board/system76/galp3-c/gpio.c
@@ -210,7 +210,7 @@ void gpio_init() {
     // WLAN_PWR_EN
     GPCRJ4 = GPIO_OUT | GPIO_UP;
     // KBLIGHT_ADJ
-    GPCRJ5 = GPIO_OUT;
+    GPCRJ5 = GPIO_ALT;
     // 3G_PWR_EN
     GPCRJ6 = GPIO_OUT | GPIO_UP;
     // NC
diff --git a/src/board/system76/galp3-c/include/board/dac.h b/src/board/system76/galp3-c/include/board/dac.h
new file mode 100644
index 0000000..fedf609
--- /dev/null
+++ b/src/board/system76/galp3-c/include/board/dac.h
@@ -0,0 +1,8 @@
+#ifndef _BOARD_DAC_H
+#define _BOARD_DAC_H
+
+#include <ec/dac.h>
+
+void dac_init(void);
+
+#endif // _BOARD_DAC_H
diff --git a/src/board/system76/galp3-c/main.c b/src/board/system76/galp3-c/main.c
index 996092f..6266062 100644
--- a/src/board/system76/galp3-c/main.c
+++ b/src/board/system76/galp3-c/main.c
@@ -4,6 +4,7 @@
 
 #include <arch/delay.h>
 #include <board/battery.h>
+#include <board/dac.h>
 #include <board/gpio.h>
 #include <board/gctrl.h>
 #include <board/kbc.h>
@@ -46,12 +47,14 @@ void timer_2(void) __interrupt(5) {
 void init(void) {
     gpio_init();
     gctrl_init();
-    kbc_init();
-    pmc_init();
-    kbscan_init();
+    dac_init();
     pwm_init();
-    smbus_init();
+
+    kbc_init();
+    kbscan_init();
+    pmc_init();
     peci_init();
+    smbus_init();
 
     //TODO: INTC
 }