diff options
| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-12-30 16:59:37 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-12-30 16:59:37 +0100 |
| commit | b4d48c942c17ce3d3a330ad91e109e522bc97378 (patch) | |
| tree | 3365292f3a5a502edb51492d011fd326c930ca40 /Documentation/serial/serial-rs485.txt | |
| parent | [media] tda10021: Add support for DVB-C Annex C (diff) | |
| parent | Linux 3.2-rc7 (diff) | |
| download | linux-b4d48c942c17ce3d3a330ad91e109e522bc97378.tar.xz linux-b4d48c942c17ce3d3a330ad91e109e522bc97378.zip | |
Merge tag 'v3.2-rc7' into staging/for_v3.3
Linux 3.2-rc7
* tag 'v3.2-rc7': (1304 commits)
Linux 3.2-rc7
netfilter: xt_connbytes: handle negation correctly
Btrfs: call d_instantiate after all ops are setup
Btrfs: fix worker lock misuse in find_worker
net: relax rcvbuf limits
rps: fix insufficient bounds checking in store_rps_dev_flow_table_cnt()
net: introduce DST_NOPEER dst flag
mqprio: Avoid panic if no options are provided
bridge: provide a mtu() method for fake_dst_ops
md/bitmap: It is OK to clear bits during recovery.
md: don't give up looking for spares on first failure-to-add
md/raid5: ensure correct assessment of drives during degraded reshape.
md/linear: fix hot-add of devices to linear arrays.
sparc64: Fix MSIQ HV call ordering in pci_sun4v_msiq_build_irq().
pata_of_platform: Add missing CONFIG_OF_IRQ dependency.
ipv4: using prefetch requires including prefetch.h
VFS: Fix race between CPU hotplug and lglocks
vfs: __read_cache_page should use gfp argument rather than GFP_KERNEL
USB: Fix usb/isp1760 build on sparc
net: Add a flow_cache_flush_deferred function
...
Conflicts:
drivers/media/common/tuners/tda18218.c
drivers/media/video/omap3isp/ispccdc.c
drivers/staging/media/as102/as102_drv.h
Diffstat (limited to 'Documentation/serial/serial-rs485.txt')
| -rw-r--r-- | Documentation/serial/serial-rs485.txt | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/Documentation/serial/serial-rs485.txt b/Documentation/serial/serial-rs485.txt index 079cb3df62cf..41c8378c0b2f 100644 --- a/Documentation/serial/serial-rs485.txt +++ b/Documentation/serial/serial-rs485.txt @@ -97,15 +97,23 @@ struct serial_rs485 rs485conf; - /* Set RS485 mode: */ + /* Enable RS485 mode: */ rs485conf.flags |= SER_RS485_ENABLED; + /* Set logical level for RTS pin equal to 1 when sending: */ + rs485conf.flags |= SER_RS485_RTS_ON_SEND; + /* or, set logical level for RTS pin equal to 0 when sending: */ + rs485conf.flags &= ~(SER_RS485_RTS_ON_SEND); + + /* Set logical level for RTS pin equal to 1 after sending: */ + rs485conf.flags |= SER_RS485_RTS_AFTER_SEND; + /* or, set logical level for RTS pin equal to 0 after sending: */ + rs485conf.flags &= ~(SER_RS485_RTS_AFTER_SEND); + /* Set rts delay before send, if needed: */ - rs485conf.flags |= SER_RS485_RTS_BEFORE_SEND; rs485conf.delay_rts_before_send = ...; /* Set rts delay after send, if needed: */ - 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 */ |