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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-26 13:11:09 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-26 13:11:09 (GMT) |
| commit | efb8d21b2c6db3497655cc6a033ae8a9883e4063 (patch) | |
| tree | a14a0dbb9fec3a6db5e542ba7ed4a49681706420 /Documentation/serial/serial-rs485.txt | |
| parent | 3cb603284b3d256ae9ae9e65887cee8416bfef15 (diff) | |
| parent | d208a3bf77f902283894f546b6b5383202cf7882 (diff) | |
| download | linux-fsl-qoriq-efb8d21b2c6db3497655cc6a033ae8a9883e4063.tar.xz | |
Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
* 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (79 commits)
TTY: serial_core: Fix crash if DCD drop during suspend
tty/serial: atmel_serial: bootconsole removed from auto-enumerates
Revert "TTY: call tty_driver_lookup_tty unconditionally"
tty/serial: atmel_serial: add device tree support
tty/serial: atmel_serial: auto-enumerate ports
tty/serial: atmel_serial: whitespace and braces modifications
tty/serial: atmel_serial: change platform_data variable name
tty/serial: RS485 bindings for device tree
TTY: call tty_driver_lookup_tty unconditionally
TTY: pty, release tty in all ptmx_open fail paths
TTY: make tty_add_file non-failing
TTY: drop driver reference in tty_open fail path
8250_pci: Fix kernel panic when pch_uart is disabled
h8300: drivers/serial/Kconfig was moved
parport_pc: release IO region properly if unsupported ITE887x card is found
tty: Support compat_ioctl get/set termios_locked
hvc_console: display printk messages on console.
TTY: snyclinkmp: forever loop in tx_load_dma_buffer()
tty/n_gsm: avoid fifo overflow in gsm_dlci_data_output
tty/n_gsm: fix a bug in gsm_dlci_data_output (adaption = 2 case)
...
Fix up Conflicts in:
- drivers/tty/serial/8250_pci.c
Trivial conflict with removed duplicate device ID
- drivers/tty/serial/atmel_serial.c
Annoying silly conflict between "specify the port num via
platform_data" and other changes to atmel_console_init
Diffstat (limited to 'Documentation/serial/serial-rs485.txt')
| -rw-r--r-- | Documentation/serial/serial-rs485.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/serial/serial-rs485.txt b/Documentation/serial/serial-rs485.txt index a493238..079cb3d 100644 --- a/Documentation/serial/serial-rs485.txt +++ b/Documentation/serial/serial-rs485.txt @@ -28,6 +28,10 @@ RS485 communications. This data structure is used to set and configure RS485 parameters in the platform data and in ioctls. + The device tree can also provide RS485 boot time parameters (see [2] + for bindings). The driver is in charge of filling this data structure from + the values given by the device tree. + Any driver for devices capable of working both as RS232 and RS485 should provide at least the following ioctls: @@ -104,6 +108,9 @@ rs485conf.flags |= SER_RS485_RTS_AFTER_SEND; rs485conf.delay_rts_after_send = ...; + /* Set this flag if you want to receive data even whilst sending data */ + rs485conf.flags |= SER_RS485_RX_DURING_TX; + if (ioctl (fd, TIOCSRS485, &rs485conf) < 0) { /* Error handling. See errno. */ } @@ -118,3 +125,4 @@ 5. REFERENCES [1] include/linux/serial.h + [2] Documentation/devicetree/bindings/serial/rs485.txt |