From 8711dda0d31cae8719ca5fa20729cc877e1dee3c Mon Sep 17 00:00:00 2001
From: cmdremily <68452184+cmdremily@users.noreply.github.com>
Date: Sat, 12 Sep 2020 22:32:28 +0200
Subject: [PATCH 1/2] Allow the use of a single IS31FL3731 LED driver

---
 quantum/rgb_matrix_drivers.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/quantum/rgb_matrix_drivers.c b/quantum/rgb_matrix_drivers.c
index 0403d6c96a..8f670f9a33 100644
--- a/quantum/rgb_matrix_drivers.c
+++ b/quantum/rgb_matrix_drivers.c
@@ -31,7 +31,9 @@ static void init(void) {
     i2c_init();
 #    ifdef IS31FL3731
     IS31FL3731_init(DRIVER_ADDR_1);
+#      ifdef DRIVER_ADDR_2
     IS31FL3731_init(DRIVER_ADDR_2);
+#      endif
 #    elif defined(IS31FL3733)
     IS31FL3733_init(DRIVER_ADDR_1, 0);
 #    elif defined(IS31FL3737)
@@ -55,7 +57,9 @@ static void init(void) {
     // This actually updates the LED drivers
 #    ifdef IS31FL3731
     IS31FL3731_update_led_control_registers(DRIVER_ADDR_1, 0);
+#      ifdef DRIVER_ADDR_2
     IS31FL3731_update_led_control_registers(DRIVER_ADDR_2, 1);
+#      endif
 #    elif defined(IS31FL3733)
     IS31FL3733_update_led_control_registers(DRIVER_ADDR_1, 0);
     IS31FL3733_update_led_control_registers(DRIVER_ADDR_2, 1);
@@ -69,7 +73,9 @@ static void init(void) {
 #    ifdef IS31FL3731
 static void flush(void) {
     IS31FL3731_update_pwm_buffers(DRIVER_ADDR_1, 0);
+#      ifdef DRIVER_ADDR_2
     IS31FL3731_update_pwm_buffers(DRIVER_ADDR_2, 1);
+#      endif
 }
 
 const rgb_matrix_driver_t rgb_matrix_driver = {

From ef7c79b781318faaef4e6fe318fffade1b1ed299 Mon Sep 17 00:00:00 2001
From: cmdremily <68452184+cmdremily@users.noreply.github.com>
Date: Sat, 12 Sep 2020 22:32:46 +0200
Subject: [PATCH 2/2] Fix issues with unused variables and functions preventing
 a clean compile.

---
 quantum/process_keycode/process_rgb.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/quantum/process_keycode/process_rgb.c b/quantum/process_keycode/process_rgb.c
index a1e46e0348..d38af74f41 100644
--- a/quantum/process_keycode/process_rgb.c
+++ b/quantum/process_keycode/process_rgb.c
@@ -23,6 +23,7 @@ typedef void (*rgb_func_pointer)(void);
  *
  * noinline to optimise for firmware size not speed (not in hot path)
  */
+#if !(defined(RGBLIGHT_DISABLE_KEYCODES) || defined(RGB_MATRIX_DISABLE_KEYCODES))
 static void __attribute__((noinline)) handleKeycodeRGB(const uint8_t is_shifted, const rgb_func_pointer inc_func, const rgb_func_pointer dec_func) {
     if (is_shifted) {
         dec_func();
@@ -30,6 +31,7 @@ static void __attribute__((noinline)) handleKeycodeRGB(const uint8_t is_shifted,
         inc_func();
     }
 }
+#endif
 
 /**
  * Wrapper for animation mode
@@ -56,7 +58,9 @@ bool process_rgb(const uint16_t keycode, const keyrecord_t *record) {
     // Split keyboards need to trigger on key-up for edge-case issue
     if (!record->event.pressed) {
 #endif
+#if !(defined(RGBLIGHT_DISABLE_KEYCODES) || defined(RGB_MATRIX_DISABLE_KEYCODES))
         uint8_t shifted = get_mods() & MOD_MASK_SHIFT;
+#endif
         switch (keycode) {
             case RGB_TOG:
 #if defined(RGBLIGHT_ENABLE) && !defined(RGBLIGHT_DISABLE_KEYCODES)