kernel/git/stable/linux.git/drivers/serial/bfin_5xx.c, branch master

tty: move drivers/serial/ to drivers/tty/serial/

2011-01-13T20:10:18+00:00

The serial drivers are really just tty drivers, so move them to drivers/tty/ to make things a bit neater overall. This is part of the tty/serial driver movement proceedure as proposed by Arnd Bergmann and approved by everyone involved a number of months ago. Cc: Arnd Bergmann Cc: Alan Cox Cc: Geert Uytterhoeven Cc: Rogier Wolff Cc: Michael H. Warfield Signed-off-by: Greg Kroah-Hartman

serial: bfin_5xx: move resources into board files

2011-01-10T12:18:11+00:00

Rather than maintain Kconfig entries where people have to enter raw numbers and hardcode lists of addresses/pins in the driver itself, push it all to platform resources. This lets us simplify the driver, the Kconfig, and gives board porters greater flexibility. In the process, we need to also start supporting the early platform interface. Not a big deal, but it causes the patch to be bigger than a simple resource relocation. All the Blackfin boards already have their resources updated and in place for this change. Signed-off-by: Sonic Zhang Acked-by: Greg Kroah-Hartman Signed-off-by: Mike Frysinger

serial: bfin_5xx: grab port lock before making port termios changes

2010-11-11T19:06:08+00:00

The port lock exists to protect these resources, so we need to grab it before making changes. Signed-off-by: Sonic Zhang Signed-off-by: Mike Frysinger Signed-off-by: Greg Kroah-Hartman

serial: bfin_5xx: disable CON_PRINTBUFFER for consoles

2010-11-11T19:06:08+00:00

If we are using early serial, don't let the normal console rewind the log buffer, since that causes things to be printed multiple times. Signed-off-by: Sonic Zhang Signed-off-by: Mike Frysinger Signed-off-by: Greg Kroah-Hartman

serial: bfin_5xx: remove redundant SSYNC to improve TX speed

2010-11-11T19:06:08+00:00

We don't need to force a SSYNC here as the LSR register will already be updated by the time we get back to reading it. This speeds up TX throughput and lowers general system overhead (since SSYNC is system wide, not peripheral-specific). Signed-off-by: Sonic Zhang Signed-off-by: Mike Frysinger Signed-off-by: Greg Kroah-Hartman

serial: bfin_5xx: always include DMA headers

2010-11-11T19:06:07+00:00

On Blackfin systems, peripherals that have optional DMA support always route their interrupts through the corresponding DMA channel -- even when DMA is not being used. So in PIO mode, we still need to request the DMA channel (so interrupts are delivered) which means we need to always include the DMA header for the DMA defines/functions. Signed-off-by: Sonic Zhang Signed-off-by: Mike Frysinger Signed-off-by: Greg Kroah-Hartman

drivers/serial/bfin_5xx.c: Fix line continuation defects

2010-11-09T23:03:06+00:00

Signed-off-by: Joe Perches Acked-by: Sonic Zhang Signed-off-by: Greg Kroah-Hartman

tty: serial - fix tty referencing in set_ldisc

2010-08-10T20:47:41+00:00

Pass down the ldisc number so that the drivers don't have to peek into the tty object themselves. This lets us get rid of another case of back referencing port to tty which we don't want (because of races versus hangup/close). Signed-off-by: Alan Cox Cc: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman

serial: bfin_5xx: fix typo in IER check

2010-06-04T20:37:17+00:00

This most likely won't cause problems on systems as people don't typically enable GPIO RTS/CTS if they don't actually use it. Signed-off-by: Sonic Zhang Signed-off-by: Mike Frysinger Signed-off-by: Greg Kroah-Hartman

serial: bfin_5xx: IRDA is not affected by anomaly 05000230

2010-06-04T20:37:17+00:00

Anomaly 05000230 (over sampling of the UART STOP bit) applies only when the peripheral is operating in UART mode. So drop the anomaly handling when the UART is in IRDA mode. Signed-off-by: Graf Yang Signed-off-by: Mike Frysinger Signed-off-by: Greg Kroah-Hartman