From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Thu, 4 Aug 2011 15:12:56 +0000 (-0500)
Subject: ALSA: hda: option to enable arbitrary buffer/period sizes
X-Git-Tag: v3.2-rc1~127^2~75
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ae66c26550cd94b0e2606a9275eb0ab7070ad0e;p=pandora-kernel.git

ALSA: hda: option to enable arbitrary buffer/period sizes

Add new parameter to disable rounding of buffer/period sizes to
multiples of 128 bytes. This is more efficient in terms of memory
access but isn't required by the HDA spec and prevents users from
specifying exact period/buffer sizes. For example for 44.1kHz, a
period size set to 20ms will be rounded to 19.59ms.

Tested and enabled on Intel HDA controllers. Option is disabled by
default for other controllers.

Tested-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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