Currently, The fixed 512KB prealloc buffer size is too larger for
tiny memory kernel (such as 16MB memory). This patch adds the module
option "prealloc_buffer_size_kbytes" to specify prealloc buffer size.
It's suitable for cards which use the generic dmaengine pcm driver
with no config.
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Link: https://lore.kernel.org/r/1632394246-59341-1-git-send-email-sugar.zhang@rock-chips.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Bug: 226673331
Change-Id: I13e4e65502e8e9625577e9a9bb9f3e02154f31f4
(cherry picked from commit b0e3b0a7078d71455747025e7deee766d4d43432)
Signed-off-by: Zhipeng Wang <zhipeng.wang_1@nxp.com>
cd54a8bad4
