openwrt/target/linux/brcm2708/patches-3.10/0039-bcm2708-Add-vc_cma-driver-to-enable-use-of-CMA.patch

From bf571a571b090c16cd49458126e996243d8a2626 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Thu, 28 Mar 2013 00:10:32 +0000
Subject: [PATCH 039/174] bcm2708: Add vc_cma driver to enable use of CMA

---
 arch/arm/mach-bcm2708/bcm2708.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

--- a/arch/arm/mach-bcm2708/bcm2708.c
+++ b/arch/arm/mach-bcm2708/bcm2708.c
@@ -60,6 +60,11 @@
 #include "armctrl.h"
 #include "clock.h"
 
+#ifdef CONFIG_BCM_VC_CMA
+#include <linux/broadcom/vc_cma.h>
+#endif
+
+
 /* Effectively we have an IOMMU (ARM<->VideoCore map) that is set up to
  * give us IO access only to 64Mbytes of physical memory (26 bits).  We could
  * represent this window by setting our dmamasks to 26 bits but, in fact
@@ -693,6 +698,9 @@ void __init bcm2708_init(void)
 {
 	int i;
 
+#if defined(CONFIG_BCM_VC_CMA)
+	vc_cma_early_init();
+#endif
 	printk("bcm2708.uart_clock = %d\n", uart_clock);
 	pm_power_off = bcm2708_power_off;
 
@@ -889,6 +897,13 @@ void __init bcm2708_init_early(void)
 	init_dma_coherent_pool_size(SZ_4M);
 }
 
+static void __init board_reserve(void)
+{
+#if defined(CONFIG_BCM_VC_CMA)
+	vc_cma_reserve();
+#endif
+}
+
 MACHINE_START(BCM2708, "BCM2708")
     /* Maintainer: Broadcom Europe Ltd. */
 	.map_io = bcm2708_map_io,
@@ -897,6 +912,7 @@ MACHINE_START(BCM2708, "BCM2708")
 	.init_machine = bcm2708_init,
 	.init_early = bcm2708_init_early,
 	.restart = bcm2708_restart,
+	.reserve = board_reserve,
 MACHINE_END
 
 module_param(boardrev, uint, 0644);