path: root/drivers/cdrom/sonycd535.c

/*
 * Sony CDU-535 interface device driver
 *
 * This is a modified version of the CDU-31A device driver (see below).
 * Changes were made using documentation for the CDU-531 (which Sony
 * assures me is very similar to the 535) and partial disassembly of the
 * DOS driver.  I used Minyard's driver and replaced the CDU-31A
 * commands with the CDU-531 commands.  This was complicated by a different
 * interface protocol with the drive.  The driver is still polled.
 *
 * Data transfer rate is about 110 Kb/sec, theoretical maximum is 150 Kb/sec.
 * I tried polling without the sony_sleep during the data transfers but
 * it did not speed things up any.
 *
 * 1993-05-23 (rgj) changed the major number to 21 to get rid of conflict
 * with CDU-31A driver.  This is the also the number from the Linux
 * Device Driver Registry for the Sony Drive.  Hope nobody else is using it.
 *
 * 1993-08-29 (rgj) remove the configuring of the interface board address
 * from the top level configuration, you have to modify it in this file.
 *
 * 1995-01-26 Made module-capable (Joel Katz <Stimpson@Panix.COM>)
 *
 * 1995-05-20
 *  Modified to support CDU-510/515 series
 *      (Claudio Porfiri<C.Porfiri@nisms.tei.ericsson.se>)
 *  Fixed to report verify_area() failures
 *      (Heiko Eissfeldt <heiko@colossus.escape.de>)
 *
 * 1995-06-01