lwn.git/drivers/serial/atmel_serial.c, branch docs-5.10-2

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: general fixes in the serial_rs485 structure

2010-08-10T20:47:45+00:00

Fix several issues related to the RS485 interface: - It adds the flag SER_RS485_RTS_BEFORE_SEND that was missing from the serial_rs485 structure (even if "delay_rts_before_send" was existing) - It adds a further "delay_rts_after_send" field for those drivers that can have a delay after send (e.g., atmel_serial) - It fixes the usage of the structure in the atmel_serial driver (where "delay_rts_before_send" should be used instead of "delay_rts_after_send"). Signed-off-by: Claudio Scordino Signed-off-by: Bernhard Roth Cc: Philippe De Muyter Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman

serial: fix rs485 for atmel_serial on avr32

2010-07-26T18:59:31+00:00

This patch fixes a build failure [1-4] in the atmel_serial code introduced by patch the patch ARM: 6092/1: atmel_serial: support for RS485 communications (e8faff7330a3501eafc9bfe5f4f15af444be29f5) The build failure was caused by missing struct field and missing defines for the avr32 board - the patch fixes this. [1] http://kisskb.ellerman.id.au/kisskb/buildresult/2575242/ - first failure in linux-next, may 11th [2] http://kisskb.ellerman.id.au/kisskb/buildresult/2816418/ - still exists as of today [3] http://kisskb.ellerman.id.au/kisskb/buildresult/2617511/ - first failure in Linus' tree - May 20th - did really no one notice this?! [4] http://kisskb.ellerman.id.au/kisskb/buildresult/2813956/ - still exists in Linus' tree as of today Signed-off-by: Peter Huewe Signed-off-by: Greg Kroah-Hartman

ARM: 6092/1: atmel_serial: support for RS485 communications

2010-05-04T15:59:11+00:00

Final version of the patch that adds support for RS485 communications to the atmel_serial driver. The patch has been already sent and discussed on both linux-kernel and linux-arm-kernel mailing lists several times. Many people collaborated to improve and test the code: Tested-by: Sebastian Heutling Tested-by: Bernhard Roth Reviewed-by: Ryan Mallon Signed-off-by: Claudio Scordino Signed-off-by: Michael Trimarchi Signed-off-by: Rick Bronson Signed-off-by: Sebastian Heutling Signed-off-by: Russell King

serial: atmel_serial: add poll_get_char and poll_put_char uart_ops

2010-03-02T22:43:08+00:00

Permits using KGDB over the console with the atmel_serial driver. [akpm@linux-foundation.org: s/barrier/cpu_relax/] Signed-off-by: Albin Tonnerre Acked-by: Andrew Victor Acked-by: Haavard Skinnemoen Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman

atmel_serial: fix bad BUILD_BUG_ON() usage

2009-10-29T14:39:30+00:00

is_power_of_2() appears not to be constant enough for BUILD_BUG_ON() after the latest rework, so replace it with an open-coded test. Signed-off-by: Haavard Skinnemoen Cc: Uwe Kleine-König Cc: Jan Beulich Cc: Haavard Skinnemoen Cc: Alan Cox Cc: Nicolas Ferre Cc: Claudio Scordino Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

serial: move delta_msr_wait into the tty_port

2009-09-19T20:13:31+00:00

This is used by various drivers not just serial and can be extracted as commonality Signed-off-by: Alan Cox

serial: kill off uart_info

2009-09-19T20:13:28+00:00

We moved this into uart_state, now move the fields out of the separate structure and kill it off. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

drivers/serial/atmel_serial.c: fix compile when CONFIG_SERIAL_ATMEL=Y and CONFIG_SERIAL_ATMEL_CONSOLE=N

2009-07-30T02:10:37+00:00

When SERIAL_ATMEL_CONSOLE is disabled, ATMEL_CONSOLE_DEVICE is set to NULL, and trying to access ATMEL_CONSOLE_DEVICE->flags in atmel_serial_probe makes the compile fail. This fixes the issue by only accessing it if CONFIG_SERIAL_ATMEL_CONSOLE is defined Signed-off-by: Albin Tonnerre Signed-off-by: Haavard Skinnemoen Cc: Nicolas Ferre Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

atmel_serial: fix hang in set_termios when crtscts is enabled

2009-06-16T19:01:16+00:00

After enabling hardware flow control, any subsequent termios call may hang waiting for the transmitter to drain. This appears to be caused by a busy-loop in set_termios() waiting for the transmitter to become empty, which may take a very long time (or hang indefinitely) if the device at the other end is blocking us. A quick look through the tty and serial_core code indicates that any necessary flushing (which is optional) has already been done at this point, so there's no need for the driver to flush the transmitter on its own. Fix it by removing the busy-loop altogether. Tested-by: Eirik Aanonsen Signed-off-by: Haavard Skinnemoen Signed-off-by: Andrew Morton Signed-off-by: Alan Cox Signed-off-by: Linus Torvalds