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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2012-04-24 13:10:05 +0400
committerRafael J. Wysocki <rjw@sisk.pl>2012-05-13 00:33:06 +0400
commit3841e6f561af717478b253ce1dcba7bff9e9f890 (patch)
tree29dda70fad9e760fba90a3027af13c027a261ef9 /arch/arm/mach-shmobile/setup-r8a7740.c
parent0a4266bb22774bb0b6390d2633a151d996a14e77 (diff)
downloadlinux-3841e6f561af717478b253ce1dcba7bff9e9f890.tar.xz
ARM: mach-shmobile: r8a7740: reserve DMA memory for the frame buffer
The default 2MB size of DMA coherent memory isn't enough for allocate frame buffer memory. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Tested-by: Simon Horman <horms@verge.net.au> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'arch/arm/mach-shmobile/setup-r8a7740.c')
-rw-r--r--arch/arm/mach-shmobile/setup-r8a7740.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c
index 34a1548dbda6..ec4eb49c1693 100644
--- a/arch/arm/mach-shmobile/setup-r8a7740.c
+++ b/arch/arm/mach-shmobile/setup-r8a7740.c
@@ -18,6 +18,7 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/delay.h>
+#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
@@ -60,6 +61,12 @@ static struct map_desc r8a7740_io_desc[] __initdata = {
void __init r8a7740_map_io(void)
{
iotable_init(r8a7740_io_desc, ARRAY_SIZE(r8a7740_io_desc));
+
+ /*
+ * DMA memory at 0xff200000 - 0xffdfffff. The default 2MB size isn't
+ * enough to allocate the frame buffer memory.
+ */
+ init_consistent_dma_size(12 << 20);
}
/* SCIFA0 */