diff --git a/include/gfx.h b/include/gfx.h
index 372c5e1..85e8b29 100644
--- a/include/gfx.h
+++ b/include/gfx.h
@@ -42,7 +42,8 @@
 void GX_memoryFill(u64 *buf0a, u32 buf0v, u32 buf0Sz, u32 val0, u64 *buf1a, u32 buf1v, u32 buf1Sz, u32 val1);
 void GX_displayTransfer(u64 *in, u32 indim, u64 *out, u32 outdim, u32 flags);
 void GX_textureCopy(u64 *in, u32 indim, u64 *out, u32 outdim, u32 size);
-void gfx_swapFramebufs(void);
-void gfx_init();
-void gfx_deinit();
+void GFX_setBrightness(u32 brightness);
+void GFX_swapFramebufs(void);
+void GFX_init(void);
+void GFX_deinit(void);
 #endif
diff --git a/include/pxi.h b/include/pxi.h
index 410780f..08c48bb 100644
--- a/include/pxi.h
+++ b/include/pxi.h
@@ -58,17 +58,18 @@
 #define PXI_ENABLE_SEND_RECV_FIFO   (1u<<15)
 
 // Custom PXI Command/Reply Definitions
-#define PXI_CMD_ENABLE_LCDS			0x4C434453
-#define PXI_CMD_POWER_OFF			0x504F4646
-#define PXI_CMD_REBOOT				0x48326482
-#define PXI_CMD_ALLOW_POWER_OFF		0x504F4F4B
-#define PXI_CMD_FORBID_POWER_OFF	0x504F4E4F
-#define PXI_CMD_FIRM_LAUNCH			0x544F4F42
-#define PXI_RPL_FIRM_LAUNCH_READY	0x4F4B6666
-#define PXI_RPL_OK					0x4F4B4F4B
-#define PXI_RPL_HOME_PRESSED		0x484F4D45
-#define PXI_RPL_HOME_HELD			0x484F4D22
-#define PXI_RPL_POWER_PRESSED		0x504F5752
+#define PXI_CMD_ENABLE_LCDS        (0x4C434453)
+#define PXI_CMD_SET_BRIGHTNESS     (0x78D28107)
+#define PXI_CMD_POWER_OFF          (0x504F4646)
+#define PXI_CMD_REBOOT             (0x48326482)
+#define PXI_CMD_ALLOW_POWER_OFF    (0x504F4F4B)
+#define PXI_CMD_FORBID_POWER_OFF   (0x504F4E4F)
+#define PXI_CMD_FIRM_LAUNCH        (0x544F4F42)
+#define PXI_RPL_FIRM_LAUNCH_READY  (0x4F4B6666)
+#define PXI_RPL_OK                 (0x4F4B4F4B)
+#define PXI_RPL_HOME_PRESSED       (0x484F4D45)
+#define PXI_RPL_HOME_HELD          (0x484F4D22)
+#define PXI_RPL_POWER_PRESSED      (0x504F5752)
 
 
 void PXI_init(void);
@@ -76,3 +77,4 @@
 bool PXI_trySendWord(u32 val);
 u32  PXI_recvWord(void);
 u32 PXI_tryRecvWord(bool *success);
+void PXI_sendBuf(const u32 *const buf, u32 size);
diff --git a/source/arm11/gfx.c b/source/arm11/gfx.c
index 160cf06..4f1f4d1 100644
--- a/source/arm11/gfx.c
+++ b/source/arm11/gfx.c
@@ -49,7 +49,7 @@
 
 
 
-static void gfx_setup_framebuf_top()
+static void gfxSetupFramebufTop(void)
 {
 	*((vu32*)(0x10400400+0x00)) = 0x000001C2;
 	*((vu32*)(0x10400400+0x04)) = 0x000000D1;
@@ -91,7 +91,7 @@
 	}
 }
 
-static void gfx_setup_framebuf_low()
+static void gfxSetupFramebufLow(void)
 {
 	*((vu32*)(0x10400500+0x00)) = 0x000001C2;
 	*((vu32*)(0x10400500+0x04)) = 0x000000D1;
@@ -174,7 +174,13 @@
 	REGs_TE[6] = 1;
 }
 
-void gfx_swapFramebufs(void)
+void GFX_setBrightness(u32 brightness)
+{
+	REG_LCD_BACKLIGHT_MAIN = brightness;
+	REG_LCD_BACKLIGHT_SUB = brightness;
+}
+
+void GFX_swapFramebufs(void)
 {
 	static u8 activeFb = 0;
 	activeFb ^= 1;
@@ -188,7 +194,7 @@
 	GX_textureCopy((u64*)FRAMEBUF_TOP_A_1, 0, (u64*)FRAMEBUF_TOP_A_2, 0, SCREEN_SIZE_TOP + SCREEN_SIZE_SUB);
 }
 
-void gfx_init(void)
+void GFX_init(void)
 {
 	REG_PDN_GPU_CNT = 0x1007F;
 	*((vu32*)0x10202014) = 0x00000001;
@@ -200,8 +206,8 @@
 	*((vu32*)0x10202244) = 0x1023E;
 	*((vu32*)0x10202A44) = 0x1023E;
 
-	gfx_setup_framebuf_top();
-	gfx_setup_framebuf_low();
+	gfxSetupFramebufTop();
+	gfxSetupFramebufLow();
 
 	// The GPU mem fill races against the console.
 	//GX_memoryFill((u64*)FRAMEBUF_TOP_A_1, 1u<<9, SCREEN_SIZE_TOP + SCREEN_SIZE_SUB, 0,
@@ -213,13 +219,13 @@
 	TIMER_sleepMs(3);
 
 	IRQ_registerHandler(IRQ_PDC0, 14, 0, true, vblankIrqHandler);
-	gfx_swapFramebufs();
+	GFX_swapFramebufs();
 
 	REG_LCD_COLORFILL_MAIN = 0;
 	REG_LCD_COLORFILL_SUB = 0;
 }
 
-void gfx_deinit()
+void GFX_deinit(void)
 {
 	/*i2cmcu_lcd_poweroff();
 
diff --git a/source/arm11/main.c b/source/arm11/main.c
index 6df8d5c..470d0ac 100644
--- a/source/arm11/main.c
+++ b/source/arm11/main.c
@@ -65,7 +65,7 @@
 			PXI_trySendWord(PXI_RPL_HOME_HELD);
 	}
 
-	gfx_deinit(); // TODO: Let ARM9 decide when to deinit gfx
+	GFX_deinit(); // TODO: Let ARM9 decide when to deinit gfx
 
 	firm_launch();
 
diff --git a/source/arm11/pxi.c b/source/arm11/pxi.c
index 9430a57..f58d0cc 100644
--- a/source/arm11/pxi.c
+++ b/source/arm11/pxi.c
@@ -45,9 +45,13 @@
 	switch(cmdCode)
 	{
 		case PXI_CMD_ENABLE_LCDS:
-			gfx_init();
+			GFX_init();
 			PXI_sendWord(PXI_RPL_OK);
 			break;
+		case PXI_CMD_SET_BRIGHTNESS:
+			cmdCode = PXI_recvWord();
+			GFX_setBrightness(cmdCode);
+			break;
 		case PXI_CMD_ALLOW_POWER_OFF:
 			g_poweroffAllowed = true;
 			break;
@@ -100,3 +104,13 @@
 	*success = true;
 	return REG_PXI_RECV11;
 }
+
+void PXI_sendBuf(const u32 *const buf, u32 size)
+{
+	while(REG_PXI_CNT11 & PXI_SEND_FIFO_FULL);
+	for(u32 i = 0; i < size / 4; i++)
+	{
+		REG_PXI_SEND11 = buf[i];
+	}
+	REG_PXI_SYNC11 |= PXI_NOTIFY_9;
+}
diff --git a/source/arm9/pxi.c b/source/arm9/pxi.c
index caf317c..0e4fc48 100644
--- a/source/arm9/pxi.c
+++ b/source/arm9/pxi.c
@@ -66,3 +66,13 @@
 	*success = true;
 	return REG_PXI_RECV9;
 }
+
+void PXI_sendBuf(const u32 *const buf, u32 size)
+{
+	while(REG_PXI_CNT9 & PXI_SEND_FIFO_FULL);
+	for(u32 i = 0; i < size / 4; i++)
+	{
+		REG_PXI_SEND9 = buf[i];
+	}
+	REG_PXI_SYNC9 |= PXI_NOTIFY_11;
+}