This patch is an example how device private CMA area can be activated.
It creates one CMA region and assigns it to the first s5p-fimc device on
Samsung Goni S5PC110 board.
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
arch/arm/mach-s5pv210/Kconfig | 1 +
arch/arm/mach-s5pv210/mach-goni.c | 8 ++++++++
2 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
index 37b5a97..c09a92c 100644
--- a/arch/arm/mach-s5pv210/Kconfig
+++ b/arch/arm/mach-s5pv210/Kconfig
@@ -64,6 +64,7 @@ menu "S5PC110 Machines"
config MACH_AQUILA
bool "Aquila"
select CPU_S5PV210
+ select CMA
select S3C_DEV_FB
select S5P_DEV_FIMC0
select S5P_DEV_FIMC1
diff --git a/arch/arm/mach-s5pv210/mach-goni.c b/arch/arm/mach-s5pv210/mach-goni.c
index 31d5aa7..d9e565d 100644
--- a/arch/arm/mach-s5pv210/mach-goni.c
+++ b/arch/arm/mach-s5pv210/mach-goni.c
@@ -26,6 +26,7 @@
#include <linux/input.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
+#include <linux/dma-contiguous.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -886,6 +887,12 @@ static void __init goni_machine_init(void)
platform_add_devices(goni_devices, ARRAY_SIZE(goni_devices));
}
+static void __init goni_reserve(void)
+{
+ /* Create private 16MiB contiguous memory area for s5p-fimc.0 device */
+ dma_declare_contiguous(&s5p_device_fimc0.dev, 16*SZ_1M, 0);
+}
+
MACHINE_START(GONI, "GONI")
/* Maintainers: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> */
.boot_params = S5P_PA_SDRAM + 0x100,
@@ -893,4 +900,5 @@ MACHINE_START(GONI, "GONI")
.map_io = goni_map_io,
.init_machine = goni_machine_init,
.timer = &s5p_timer,
+ .reserve = goni_reserve,
MACHINE_END
--
1.7.1.569.g6f426
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