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authorAndrea Paterniani <a.paterniani@swapp-eng.it>2007-05-08 03:32:15 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-08 14:15:15 -0400
commit814a8d50eb1d88cedcef97567be53ee0d4512631 (patch)
treeedf10598ae95e5729edca3095b60641606b62939 /Documentation/IO-mapping.txt
parent735ce95e6b9a262d1fbc0ddb5620deb3a29d1067 (diff)
/dev/spidevB.C interface
Add a filesystem API for <linux/spi/spi.h> stack. The initial version of this interface is purely synchronous. dbrownell@users.sourceforge.net: Cleaned up, bugfixed; much simplified; added preliminary documentation. Works with mdev given CONFIG_SYSFS_DEPRECATED; and presumably udev. Updated SPI_IOC_MESSAGE ioctl to full spi_message semantics, supporting groups of one or more transfers (each of which may be full duplex if desired). This is marked as EXPERIMENTAL with an explicit disclaimer that the API (notably the ioctls) is subject to change. Signed-off-by: Andrea Paterniani <a.paterniani@swapp-eng.it> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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