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This is an implementation of PCM streaming with only 1 period. Since the hardware requires the refresh of BDs after each BD processing finishes, we'd need at least two BDs. The trick is that both BDs point to the same content: the address of the PCM buffer head, and the whole buffer size. Then it loops over to the whole buffer again after it finished once. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.