bfin: add 32M, 16M and 8M uncached DMA region options

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

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>

authored by

Scott Jiang and committed by

Bob Liu 13 years ago c8d11a06 2cdd7008

+13 -1

2 changed files

expand all

arch

blackfin

Kconfig

include

asm

bfin-global.h

arch/blackfin/Kconfig

··· 1009 1009 choice 1010 1010 prompt "Uncached DMA region" 1011 1011 default DMA_UNCACHED_1M 1012 + config DMA_UNCACHED_32M 1013 + bool "Enable 32M DMA region" 1014 + config DMA_UNCACHED_16M 1015 + bool "Enable 16M DMA region" 1016 + config DMA_UNCACHED_8M 1017 + bool "Enable 8M DMA region" 1012 1018 config DMA_UNCACHED_4M 1013 1019 bool "Enable 4M DMA region" 1014 1020 config DMA_UNCACHED_2M

+7 -1

arch/blackfin/include/asm/bfin-global.h

··· 14 14 #include <linux/linkage.h> 15 15 #include <linux/types.h> 16 16 17 - #if defined(CONFIG_DMA_UNCACHED_4M) 17 + #if defined(CONFIG_DMA_UNCACHED_32M) 18 + # define DMA_UNCACHED_REGION (32 * 1024 * 1024) 19 + #elif defined(CONFIG_DMA_UNCACHED_16M) 20 + # define DMA_UNCACHED_REGION (16 * 1024 * 1024) 21 + #elif defined(CONFIG_DMA_UNCACHED_8M) 22 + # define DMA_UNCACHED_REGION (8 * 1024 * 1024) 23 + #elif defined(CONFIG_DMA_UNCACHED_4M) 18 24 # define DMA_UNCACHED_REGION (4 * 1024 * 1024) 19 25 #elif defined(CONFIG_DMA_UNCACHED_2M) 20 26 # define DMA_UNCACHED_REGION (2 * 1024 * 1024)