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

   1 From 4998fad71d9539a6f6e28c7ad54142950c85cbe5 Mon Sep 17 00:00:00 2001
   2 From: popcornmix <popcornmix@gmail.com>
   3 Date: Thu, 28 Mar 2013 00:10:32 +0000
   4 Subject: [PATCH 039/196] bcm2708: Add vc_cma driver to enable use of CMA
   5
   6 ---
   7  arch/arm/mach-bcm2708/bcm2708.c | 16 ++++++++++++++++
   8  1 file changed, 16 insertions(+)
   9
  10 diff --git a/arch/arm/mach-bcm2708/bcm2708.c b/arch/arm/mach-bcm2708/bcm2708.c
  11 index 5a7437b..13b91de 100644
  12 --- a/arch/arm/mach-bcm2708/bcm2708.c
  13 +++ b/arch/arm/mach-bcm2708/bcm2708.c
  14 @@ -60,6 +60,11 @@
  15  #include "armctrl.h"
  16  #include "clock.h"
  17
  18 +#ifdef CONFIG_BCM_VC_CMA
  19 +#include <linux/broadcom/vc_cma.h>
  20 +#endif
  21 +
  22 +
  23  /* Effectively we have an IOMMU (ARM<->VideoCore map) that is set up to
  24   * give us IO access only to 64Mbytes of physical memory (26 bits).  We could
  25   * represent this window by setting our dmamasks to 26 bits but, in fact
  26 @@ -693,6 +698,9 @@ void __init bcm2708_init(void)
  27  {
  28         int i;
  29
  30 +#if defined(CONFIG_BCM_VC_CMA)
  31 +       vc_cma_early_init();
  32 +#endif
  33         printk("bcm2708.uart_clock = %d\n", uart_clock);
  34         pm_power_off = bcm2708_power_off;
  35
  36 @@ -889,6 +897,13 @@ void __init bcm2708_init_early(void)
  37         init_dma_coherent_pool_size(SZ_4M);
  38  }
  39
  40 +static void __init board_reserve(void)
  41 +{
  42 +#if defined(CONFIG_BCM_VC_CMA)
  43 +       vc_cma_reserve();
  44 +#endif
  45 +}
  46 +
  47  MACHINE_START(BCM2708, "BCM2708")
  48      /* Maintainer: Broadcom Europe Ltd. */
  49         .map_io = bcm2708_map_io,
  50 @@ -897,6 +912,7 @@ MACHINE_START(BCM2708, "BCM2708")
  51         .init_machine = bcm2708_init,
  52         .init_early = bcm2708_init_early,
  53         .restart = bcm2708_restart,
  54 +       .reserve = board_reserve,
  55  MACHINE_END
  56
  57  module_param(boardrev, uint, 0644);
  58 --
  59 1.9.1
  60