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06aa82e498
linux/drivers/tty/serial
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Murali Karicheri 06aa82e498 serial: uart: add hw flow control support configuration 
8250 uart driver currently supports only software assisted hw flow
control. The software assisted hw flow control maintains a hw_stopped
flag in the tty structure to stop and start transmission and use modem
status interrupt for the event to drive the handshake signals. This is
not needed if hw has flow control capabilities. This patch adds a
DT attribute for enabling hw flow control for a uart port. Also skip
stop and start if this flag is present in flag field of the port
structure.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
CC: Rob Herring <robh+dt@kernel.org>
CC: Pawel Moll <pawel.moll@arm.com>
CC: Mark Rutland <mark.rutland@arm.com>
CC: Ian Campbell <ijc+devicetree@hellion.org.uk>
CC: Kumar Gala <galak@codeaurora.org>
CC: Randy Dunlap <rdunlap@infradead.org>
CC: Jiri Slaby <jslaby@suse.cz>
CC: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-28 13:04:46 -07:00
..
8250 serial: uart: add hw flow control support configuration 2014-05-28 13:04:46 -07:00
cpm_uart tty: delete non-required instances of include <linux/init.h> 2014-01-07 17:05:21 -08:00
jsm
21285.c
68328serial.c
altera_jtaguart.c ARM: SoC DT updates for 3.12 2013-09-06 13:26:27 -07:00
altera_uart.c ARM: SoC DT updates for 3.12 2013-09-06 13:26:27 -07:00
amba-pl010.c serial: pl010: Convert to modern PM ops 2013-12-08 17:09:07 -08:00
amba-pl011.c tty/serial: pl011: add generic earlycon support 2014-04-24 16:32:27 -07:00
apbuart.c
apbuart.h
ar933x_uart.c tty: ar933x_uart: add device tree support and binding documentation 2013-08-30 14:11:27 -07:00
arc_uart.c serial: arc_uart: Remove casting the return value which is a void pointer 2013-09-26 14:29:58 -07:00
atmel_serial.c tty/serial: at91: add interrupts for modem control lines 2014-05-28 12:51:18 -07:00
bcm63xx_uart.c tty: serial: bcm63xx_uart: add support for DT probing 2014-02-28 16:27:18 -08:00
bfin_sport_uart.c serial: bfin_sport_uart: Remove casting the return value which is a void pointer 2013-09-26 14:29:58 -07:00
bfin_sport_uart.h
bfin_uart.c tty: Remove unnecessary semicolons 2013-10-16 13:08:16 -07:00
clps711x.c Revert "serial: clps711x: Give a chance to perform useful tasks during wait loop" 2014-04-16 14:17:44 -07:00
crisv10.c tty: serial: crisv10: Drop remaining code for CRISv10 CPU simulator 2014-02-15 12:16:21 -08:00
crisv10.h
dz.c
dz.h
earlycon-arm-semihost.c tty/serial: add arm/arm64 semihosting earlycon 2014-04-24 16:32:27 -07:00
earlycon.c tty/serial: fix generic earlycon option parsing 2014-05-03 18:16:38 -04:00
efm32-uart.c serial: efm32: add module_exit 2014-05-28 12:30:48 -07:00
fsl_lpuart.c serial: fsl_lpuart: add DMA support 2014-02-18 12:50:26 -08:00
icom.c serial: icom: dereference after free in load_code() 2013-12-08 17:16:05 -08:00
icom.h
ifx6x60.c serial: ifx6x60: Remove casting the return value which is a void pointer 2013-09-26 14:29:58 -07:00
ifx6x60.h
imx.c serial: imx: disable the receiver ready interrupt for imx_stop_rx 2014-05-28 12:41:32 -07:00
ioc3_serial.c
ioc4_serial.c
ip22zilog.c tty: Remove unnecessary semicolons 2013-10-16 13:08:16 -07:00
ip22zilog.h
Kconfig tty/serial: at91: use mctrl_gpio helpers 2014-05-28 12:49:44 -07:00
kgdb_nmi.c tty: delete non-required instances of include <linux/init.h> 2014-01-07 17:05:21 -08:00
kgdboc.c treewide: Convert retrun typos to return 2013-09-04 12:26:36 +02:00
lantiq.c
lpc32xx_hs.c
m32r_sio_reg.h
m32r_sio.c
m32r_sio.h
Makefile tty/serial: Add GPIOLIB helpers for controlling modem lines 2014-05-28 12:49:14 -07:00
max310x.c serial: max310x: Add missing #include <linux/uaccess.h> 2014-03-17 16:13:23 -07:00
max3100.c
mcf.c
men_z135_uart.c tty: serial: men_z135_uart: Don't activate TX Space available IRQ on startup 2014-05-28 12:27:22 -07:00
mfd.c serial: mfd: Staticize local symbols 2013-10-29 16:34:11 -07:00
mpc52xx_uart.c serial: mpc512x: setup the PSC FIFO clock as well 2014-01-12 18:53:05 +01:00
mpsc.c serial: mpsc: Remove casting the return value which is a void pointer 2013-09-26 14:29:58 -07:00
mrst_max3110.c mrst_max3110: fix unbalanced IRQ issue during resume 2013-10-29 16:26:54 -07:00
mrst_max3110.h
msm_serial_hs.c
msm_serial.c msm_serial: Add support for poll_{get,put}_char() 2014-02-12 11:34:23 -08:00
msm_serial.h msm_serial: Add support for poll_{get,put}_char() 2014-02-12 11:34:23 -08:00
msm_smd_tty.c
mux.c tty: serial: replace del_timer by del_timer_sync 2014-04-24 16:13:01 -07:00
mxs-auart.c tty: serial: mxs-auart: Check the return value from clk_prepare_enable() 2013-12-08 17:14:58 -08:00
netx-serial.c tty: serial: netx: drop uart_port->lock before calling tty_flip_buffer_push() 2013-08-27 16:17:34 -07:00
nwpserial.c tty: serial: nwpserial: drop uart_port->lock before calling tty_flip_buffer_push() 2013-08-27 16:17:35 -07:00
of_serial.c serial: uart: add hw flow control support configuration 2014-05-28 13:04:46 -07:00
omap-serial.c tty: serial: omap: fix Sparse warnings 2014-04-24 16:19:02 -07:00
pch_uart.c serial_core: Commonalize crlf when working w/ a non open console port 2014-04-24 16:13:01 -07:00
pmac_zilog.c TTY: pmac_zilog, check existence of ports in pmz_console_init() 2013-11-25 08:54:25 -08:00
pmac_zilog.h
pnx8xxx_uart.c tty: serial: pnx8xxx: drop uart_port->lock before calling tty_flip_buffer_push() 2013-08-27 16:17:35 -07:00
pxa.c serial_core: Commonalize crlf when working w/ a non open console port 2014-04-24 16:13:01 -07:00
rp2.c tty: remove DEFINE_PCI_DEVICE_TABLE macro 2013-12-08 17:09:07 -08:00
sa1100.c serial: sa1100: delete .set_wake callback 2013-10-16 13:16:18 -07:00
samsung.c serial: samsung: Neaten dbg uses 2014-05-28 12:27:22 -07:00
samsung.h serial: samsung: Neaten dbg uses 2014-05-28 12:27:22 -07:00
sb1250-duart.c
sc16is7xx.c serial: sc16is7xx: dynamically allocate tx/rx buffer 2014-05-28 12:22:42 -07:00
sccnxp.c serial: sccnxp: Add IGNPAR flag handling 2014-05-28 12:41:58 -07:00
serial_core.c serial: uart: add hw flow control support configuration 2014-05-28 13:04:46 -07:00
serial_ks8695.c
serial_mctrl_gpio.c tty/serial: Add GPIOLIB helpers for controlling modem lines 2014-05-28 12:49:14 -07:00
serial_mctrl_gpio.h tty/serial: Add GPIOLIB helpers for controlling modem lines 2014-05-28 12:49:14 -07:00
serial_txx9.c serial_core: Commonalize crlf when working w/ a non open console port 2014-04-24 16:13:01 -07:00
serial-tegra.c serial: tegra: convert to standard DMA DT bindings 2013-12-11 16:44:35 -07:00
sh-sci.c Revert "serial: sh-sci: Add device tree support for r8a7779" 2014-04-24 19:26:16 -07:00
sh-sci.h serial: sh-sci: Move overrun_bit and error_mask fields out of pdata 2013-12-24 11:17:48 +09:00
sirfsoc_uart.c serial: sirf: fix spinlock deadlock issue 2014-05-28 12:22:43 -07:00
sirfsoc_uart.h serial: sirf: fix spinlock deadlock issue 2014-05-28 12:22:43 -07:00
sn_console.c
st-asc.c serial: st-asc: Fix data corruption during long console bursts 2014-05-28 12:24:31 -07:00
suncore.c
sunhv.c sparc: serial: Clean up the locking for -rt 2014-03-06 16:32:25 -05:00
sunsab.c sparc: serial: Clean up the locking for -rt 2014-03-06 16:32:25 -05:00
sunsab.h
sunsu.c sparc: serial: Clean up the locking for -rt 2014-03-06 16:32:25 -05:00
sunzilog.c sparc: serial: Clean up the locking for -rt 2014-03-06 16:32:25 -05:00
sunzilog.h
tilegx.c tilegx: Add tty serial support for TILE-Gx on-chip UART 2013-09-03 14:50:40 -04:00
timbuart.c
timbuart.h
uartlite.c tty: serial: uartlite: Specify time for sending chars 2014-05-28 12:24:31 -07:00
ucc_uart.c DeviceTree updates for 3.13. This is a bit larger pull request than 2013-11-12 16:52:17 +09:00
vr41xx_siu.c
vt8500_serial.c serial: vt8500: add missing braces 2013-10-16 13:22:16 -07:00
xilinx_uartps.c tty: xuartps: Rebrand driver as Cadence UART 2014-04-24 16:21:51 -07:00
zs.c
zs.h