linux-toradex.git/drivers/tty/serial/sccnxp.c, branch v4.1.10

tty: serial: drop owner assignment from platform_drivers

2014-10-20T14:21:45+00:00

A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang

serial: treewide: Remove empty implementations of enable_ms()

2014-07-10T00:29:38+00:00

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

serial: Fix IGNBRK handling

2014-06-19T20:04:52+00:00

If IGNBRK is set without either BRKINT or PARMRK set, some uart
drivers send a 0x00 byte for BREAK without the TTYBREAK flag to the
line discipline, when it should send either nothing or the TTYBREAK flag
set. This happens because the read_status_mask masks out the BI
condition, which uart_insert_char() then interprets as a normal 0x00 byte.

SUS v3 is clear regarding the meaning of IGNBRK; Section 11.2.2, General
Terminal Interface - Input Modes, states:
  "If IGNBRK is set, a break condition detected on input shall be ignored;
   that is, not put on the input queue and therefore not read by any
   process."

Fix read_status_mask to include the BI bit if IGNBRK is set; the
lsr status retains the BI bit if a BREAK is recv'd, which is
subsequently ignored in uart_insert_char() when masked with the
ignore_status_mask.

Affected drivers:
8250 - all
serial_txx9
mfd
amba-pl010
amba-pl011
atmel_serial
bfin_uart
dz
ip22zilog
max310x
mxs-auart
netx-serial
pnx8xxx_uart
pxa
sb1250-duart
sccnxp
serial_ks8695
sirfsoc_uart
st-asc
vr41xx_siu
zs
sunzilog
fsl_lpuart
sunsab
ucc_uart
bcm63xx_uart
sunsu
efm32-uart
pmac_zilog
mpsc
msm_serial
m32r_sio

Unaffected drivers:
omap-serial
rp2
sa1100
imx
icom

Annotated for fixes:
altera_uart
mcf

Drivers without break detection:
21285
xilinx-uartps
altera_jtaguart
apbuart
arc-uart
clps711x
max3100
uartlite
msm_serial_hs
nwpserial
lantiq
vt8500_serial

Unknown:
samsung
mpc52xx_uart
bfin_sport_uart
cpm_uart/core

Fixes: Bugzilla #71651, '8250_core.c incorrectly handles IGNBRK flag'
Reported-by: Ivan 
Signed-off-by: Peter Hurley 
Signed-off-by: Greg Kroah-Hartman

serial: sccnxp: Add IGNPAR flag handling

2014-05-28T19:41:58+00:00

This patch add IGNPAR flag handling for the driver.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

serial: sccnxp: Remove useless timer_pending() check

2014-05-28T19:41:58+00:00

sccnxp_timer() is triggered only by timer, so there are no need to
check for timer_pending().

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

serial: sccnxp: missing uart_unregister_driver() on error in sccnxp_probe()

2013-09-26T22:44:45+00:00

Add the missing uart_unregister_driver() before return
from sccnxp_probe() in the error handling case.

Signed-off-by: Wei Yongjun 
Signed-off-by: Greg Kroah-Hartman

Revert "serial: sccnxp: Add DT support"

2013-08-02T07:25:19+00:00

This reverts commit 85c996907473e4ef824774b97b26499adf66521f.

Alexander wishes to remove this patch as it is incorrect.

Reported-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

serial: sccnxp: Add DT support

2013-08-01T01:09:35+00:00

Add DT support to the SCCNCP serial driver.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

serial: sccnxp: Using structure for each supported IC instead of switch in probe

2013-08-01T01:08:02+00:00

This patch replaces switch in probe function to constant structure
for each supported IC. This makes code a bit smaller and cleaner and
helps adding DT support to the driver in the future.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

serial: sccnxp: Using CLK API for getting UART clock

2013-08-01T01:08:01+00:00

This patch removes "frequency" parameter from SCCNXP platform_data
and uses CLK API for getting clock. If CLK ommited, default IC
frequency will be used instead.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman