ALSA: HDAC: move SND_HDA_PREALLOC_SIZE to core

Since this is common option for HDA driver to specfiy pre-allocated
buffer, we should make this option availble to all HDA driver by
moving this to HDA core

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 13 insertions, 0 deletions

diff --git a/sound/hda/Kconfig b/sound/hda/Kconfig
index 6dc3914fd28b..3129546398d0 100644
--- a/sound/hda/Kconfig
+++ b/sound/hda/Kconfig
@@ -14,3 +14,16 @@ config SND_HDA_I915
 config SND_HDA_EXT_CORE
        tristate
        select SND_HDA_CORE
+
+config SND_HDA_PREALLOC_SIZE
+        int "Pre-allocated buffer size for HD-audio driver"
+        range 0 32768
+        default 64
+        help
+          Specifies the default pre-allocated buffer-size in kB for the
+          HD-audio driver.  A larger buffer (e.g. 2048) is preferred
+          for systems using PulseAudio.  The default 64 is chosen just
+          for compatibility reasons.
+
+          Note that the pre-allocation size can be changed dynamically
+          via a proc file (/proc/asound/card*/pcm*/sub*/prealloc), too.