[8/8] ARM: S5PV210: example of CMA private area for FIMC device on Goni board

Commit Message

Marek Szyprowski July 20, 2011, 8:57 a.m. UTC

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 <[e-mail]>
Signed-off-by: Kyungmin Park <[e-mail]>
---
 arch/arm/mach-s5pv210/Kconfig     |    1 +
 arch/arm/mach-s5pv210/mach-goni.c |    8 ++++++++
 2 files changed, 9 insertions(+), 0 deletions(-)

Patch

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 <[e-mail]> */
 	.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