ASoC: Blackfin: add multi-channel function support

This patch provides a option for users to enable multi-channel function support
in Blackfin ASoC driver. Because Blackfin is without MMU, it is easy for us and
the user to enable this function at compiling stage not dynamically on the fly.

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 11 insertions, 3 deletions

diff --git a/sound/soc/blackfin/Kconfig b/sound/soc/blackfin/Kconfig
index 3fce18788b77..43d89fc253ae 100644
--- a/sound/soc/blackfin/Kconfig
+++ b/sound/soc/blackfin/Kconfig
@@ -47,7 +47,7 @@ config SND_BF5XX_AC97
           properly with this driver. This driver is known to work with the
           Analog Devices line of AC97 codecs.
 
-config SND_MMAP_SUPPORT
+config SND_BF5XX_MMAP_SUPPORT
         bool "Enable MMAP Support"
         depends on SND_BF5XX_AC97
         default y
@@ -55,9 +55,17 @@ config SND_MMAP_SUPPORT
           Say y if you want AC97 driver to support mmap mode.
           We introduce an intermediate buffer to simulate mmap.
 
+config SND_BF5XX_MULTICHAN_SUPPORT
+        bool "Enable Multichannel Support"
+        depends on SND_BF5XX_AC97
+        default n
+        help
+          Say y if you want AC97 driver to support up to 5.1 channel audio.
+          this mode will consume much more memory for DMA.
+
 config SND_BF5XX_SOC_SPORT
         tristate
-        
+
 config SND_BF5XX_SOC_I2S
         tristate
         select SND_BF5XX_SOC_SPORT
@@ -90,7 +98,7 @@ config SND_BF5XX_HAVE_COLD_RESET
         depends on SND_BF5XX_AC97
         default y if BFIN548_EZKIT
         default n if !BFIN548_EZKIT
-        
+
 config SND_BF5XX_RESET_GPIO_NUM
         int "Set a GPIO for cold reset"
         depends on SND_BF5XX_HAVE_COLD_RESET