From c8d11a06bf8242d5d6ff86fa2514c4f50cb847fb Mon Sep 17 00:00:00 2001 From: Scott Jiang <scott.jiang.linux@gmail.com> Date: Fri, 18 May 2012 16:27:22 -0400 Subject: [PATCH] bfin: add 32M, 16M and 8M uncached DMA region options We need larger DMA region to support HD video. Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com> --- arch/blackfin/Kconfig | 6 ++++++ arch/blackfin/include/asm/bfin-global.h | 8 +++++++- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index fef96f47876c..2baa4938d741 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -1009,6 +1009,12 @@ config HAVE_PWM choice prompt "Uncached DMA region" default DMA_UNCACHED_1M +config DMA_UNCACHED_32M + bool "Enable 32M DMA region" +config DMA_UNCACHED_16M + bool "Enable 16M DMA region" +config DMA_UNCACHED_8M + bool "Enable 8M DMA region" config DMA_UNCACHED_4M bool "Enable 4M DMA region" config DMA_UNCACHED_2M diff --git a/arch/blackfin/include/asm/bfin-global.h b/arch/blackfin/include/asm/bfin-global.h index 608be5e6d25c..dc47d79287f9 100644 --- a/arch/blackfin/include/asm/bfin-global.h +++ b/arch/blackfin/include/asm/bfin-global.h @@ -14,7 +14,13 @@ #include <linux/linkage.h> #include <linux/types.h> -#if defined(CONFIG_DMA_UNCACHED_4M) +#if defined(CONFIG_DMA_UNCACHED_32M) +# define DMA_UNCACHED_REGION (32 * 1024 * 1024) +#elif defined(CONFIG_DMA_UNCACHED_16M) +# define DMA_UNCACHED_REGION (16 * 1024 * 1024) +#elif defined(CONFIG_DMA_UNCACHED_8M) +# define DMA_UNCACHED_REGION (8 * 1024 * 1024) +#elif defined(CONFIG_DMA_UNCACHED_4M) # define DMA_UNCACHED_REGION (4 * 1024 * 1024) #elif defined(CONFIG_DMA_UNCACHED_2M) # define DMA_UNCACHED_REGION (2 * 1024 * 1024)