dd49b2d1f0
This commit adds PCM functionality to transmit/receive PCM samples. When one of PCM substreams are running or external clock source is selected, current sampling rate is used. Else, the sampling rate is changed according to requests from a userspace application. Available number of samples in a frame of PCM substream is determined at open(2) to corresponding PCM character device. Later, packet streaming starts by ioctl(2) with SNDRV_PCM_IOCTL_PREPARE. In theory, between them, applications can change state of the unit by any write transaction to change the number. In this case, this driver may fail packet streaming due to wrong data format. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> 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.