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linux/drivers/tty/serial
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Bhuvanchandra DV 5887ad43ee tty: serial: fsl_lpuart: Use cyclic DMA for Rx 
The initial approach of DMA implementatin for RX is inefficient due to switching
from PIO to DMA, this leads to overruns especially on instances with the smaller
FIFO. To address these issues this patch uses a cyclic DMA for receiver path.

Some part of the code is borrowed from atmel serial driver.

Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31 15:48:29 +02:00
..
8250
serial: 8250_dw: Check the data->pclk when get apb_pclk
2016-08-31 15:43:52 +02:00
cpm_uart
tty: serial: cpm_uart: Fix module autoload for OF platform driver
2015-10-04 19:09:21 +01:00
jsm
tty: serial: jsm_tty: fixed redundant variable issue.
2016-02-07 13:36:09 -08:00
21285.c
…
altera_jtaguart.c
…
altera_uart.c
serial: altera_uart: Use of_property_read_u32 instead of open-coding it
2015-10-04 17:47:49 +01:00
amba-pl010.c
…
amba-pl011.c
tty: amba-pl011: probe ZTE device from AMBA bus with a pseudo-ID
2016-08-31 15:24:23 +02:00
amba-pl011.h
tty: amba-pl011: clean up LCR register offsets
2015-12-13 19:59:48 -08:00
apbuart.c
tty: serial: apbuart: Fix module autoload for OF platform driver
2015-10-04 19:09:21 +01:00
apbuart.h
…
ar933x_uart.c
tree-wide: replace config_enabled() with IS_ENABLED()
2016-08-04 08:50:07 -04:00
arc_uart.c
earlycon: Use common framework for earlycon declarations
2016-02-06 22:07:37 -08:00
atmel_serial.c
tty/serial: atmel: add fractional baud rate support
2016-08-31 15:39:58 +02:00
bcm63xx_uart.c
serial/bcm63xx_uart: use correct alias naming
2016-06-25 14:00:06 -07:00
bfin_sport_uart.c
…
bfin_sport_uart.h
…
bfin_uart.c
serial:bfin-uart:Remove 'struct timeval'
2015-12-13 19:59:48 -08:00
clps711x.c
serial: clps711x: Changing the compatibility string to match with the smallest supported chip
2016-07-06 17:38:16 +02:00
crisv10.c
tty: Replace ASYNC_INITIALIZED bit and update atomically
2016-04-30 09:26:55 -07:00
crisv10.h
…
digicolor-usart.c
tty/serial: digicolor: Fix bad usage of IS_ERR_VALUE
2016-02-14 17:39:36 -08:00
dz.c
…
dz.h
…
earlycon-arm-semihost.c
…
earlycon.c
serial: earlycon: Show the earlycon "driver" in banner
2016-02-06 22:07:37 -08:00
efm32-uart.c
…
etraxfs-uart.c
serial: etraxfs-uart: Fix crash
2015-11-20 16:19:54 -08:00
fsl_lpuart.c
tty: serial: fsl_lpuart: Use cyclic DMA for Rx
2016-08-31 15:48:29 +02:00
icom.c
tty: Remove unused SERIAL_DO_RESTART define
2015-12-13 19:59:48 -08:00
icom.h
…
ifx6x60.c
TTY: serial/ifx6x60, initialize more
2016-04-30 09:26:55 -07:00
ifx6x60.h
…
imx.c
serial: imx: Use generic uart-has-rtscts DT property
2016-04-30 09:26:55 -07:00
ioc3_serial.c
…
ioc4_serial.c
…
ip22zilog.c
…
ip22zilog.h
…
Kconfig
serial: Make SERIAL_MPS2_UART depend on ARCH_MPS2
2016-06-25 10:40:33 -07:00
kgdb_nmi.c
…
kgdboc.c
…
lantiq.c
…
lpc32xx_hs.c
tty: serial: lpc32xx_hs: fix handling platform_get_irq result
2015-10-04 19:09:21 +01:00
m32r_sio_reg.h
…
m32r_sio.c
serial: m32r_sio: make it explicitly non-modular
2016-06-25 14:00:06 -07:00
Makefile
TTY and Serial driver update for 4.7-rc1
2016-05-20 20:57:27 -07:00
max310x.c
serial: max310x: Assign port line automatically
2016-06-25 13:55:35 -07:00
max3100.c
spi: Drop owner assignment from spi_drivers
2015-10-28 10:30:17 +09:00
mcf.c
…
men_z135_uart.c
serial/men_z135_uart: Deinline men_z135_reg_clr, save 176 bytes
2015-12-13 19:59:48 -08:00
meson_uart.c
tty: serial: meson: Implement earlycon support
2016-04-30 09:26:55 -07:00
mpc52xx_uart.c
tty: serial: constify psc_ops structs
2016-02-06 22:31:47 -08:00
mps2-uart.c
serial: mps2-uart: make driver explicitly non-modular
2016-06-25 14:01:57 -07:00
mpsc.c
TTY: serial/mpsc, remove unused fields
2016-02-06 22:16:21 -08:00
msm_serial.c
tty: serial: msm: fix definition of msm_stop_dma
2016-06-25 10:23:54 -07:00
mux.c
parisc: serial/mux: Convert to uart_console_device instead of open-coded
2015-10-22 15:44:28 +02:00
mvebu-uart.c
serial: mvebu-uart: free the IRQ in ->shutdown()
2016-06-25 14:00:06 -07:00
mxs-auart.c
serial: mxs-auart: Use generic uart-has-rtscts DT property
2016-04-30 09:26:55 -07:00
netx-serial.c
…
omap-serial.c
Merge 4.5-rc4 into tty-next
2016-02-14 14:36:04 -08:00
pch_uart.c
…
pic32_uart.c
serial: pic32_uart: Fix double free of 'sport->irq_fault_name'.
2016-06-25 13:50:53 -07:00
pic32_uart.h
serial: pic32_uart: Add PIC32 UART driver
2016-05-13 14:01:56 +02:00
pmac_zilog.c
TTY: serial, handle platform_get_irq retval properly
2016-06-25 09:01:52 -07:00
pmac_zilog.h
…
pnx8xxx_uart.c
…
pxa.c
serial: pxa: make it explicitly non-modular
2016-06-25 14:00:06 -07:00
rp2.c
…
sa1100.c
…
samsung.c
serial: samsung: Register cpufreq notifier only on S3C24xx
2016-08-31 15:39:58 +02:00
samsung.h
serial: samsung: Register cpufreq notifier only on S3C24xx
2016-08-31 15:39:58 +02:00
sb1250-duart.c
…
sc16is7xx.c
TTY and Serial driver update for 4.7-rc1
2016-05-20 20:57:27 -07:00
sccnxp.c
…
serial_core.c
tty: serial_core: convert uart_close to use tty_port_close
2016-08-31 15:42:28 +02:00
serial_ks8695.c
serial: Fix ASYNC_* => UPF_* flags misuse
2016-01-28 14:17:42 -08:00
serial_mctrl_gpio.c
serial: mctrl_gpio: enable API usage only for initialized mctrl_gpios struct
2016-06-25 14:30:42 -07:00
serial_mctrl_gpio.h
serial: mctrl_gpio: add modem control read routine
2016-06-25 14:30:42 -07:00
serial_txx9.c
…
serial-tegra.c
TTY: serial, handle platform_get_irq retval properly
2016-06-25 09:01:52 -07:00
sh-sci.c
serial: sh-sci: Stop transfers in sci_shutdown()
2016-06-26 10:57:13 -07:00
sh-sci.h
serial: sh-sci: Clear (H)SCIF timeout and overrun during reset
2016-06-25 09:09:53 -07:00
sirfsoc_uart.c
serial: sirf: Use generic uart-has-rtscts DT property
2016-04-30 09:26:55 -07:00
sirfsoc_uart.h
serial: sirf: make fifo functions static
2016-06-25 14:01:57 -07:00
sn_console.c
…
sprd_serial.c
remove lots of IS_ERR_VALUE abuses
2016-05-27 15:26:11 -07:00
st-asc.c
tty/serial: st-asc: drop the use of IRQF_NO_SUSPEND
2015-10-04 19:11:05 +01:00
stm32-usart.c
tty/serial: st-asc: drop the use of IRQF_NO_SUSPEND
2015-10-04 19:11:05 +01:00
suncore.c
…
sunhv.c
sparc: serial: sunhv: fix a double lock bug
2016-07-27 22:54:52 -07:00
sunsab.c
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sunsab.h
…
sunsu.c
serial/sunsu: Deinline wait_for_xmitr, save 165 bytes
2015-12-13 19:59:48 -08:00
sunzilog.c
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sunzilog.h
…
tilegx.c
…
timbuart.c
…
timbuart.h
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uartlite.c
serial-uartlite: Constify uartlite_be/uartlite_le
2016-04-30 09:26:55 -07:00
ucc_uart.c
QE-UART: add "fsl,t1040-ucc-uart" to of_device_id
2016-05-01 13:55:12 -07:00
vr41xx_siu.c
…
vt8500_serial.c
serial: vt8500_serial: Fix a parameter of find_first_zero_bit.
2016-08-31 15:42:28 +02:00
xilinx_uartps.c
tty: xuartps: disable clocks when not used
2016-06-25 13:50:53 -07:00
zs.c
serial: zs: Fix a transmit lockup in console output
2016-02-06 23:13:30 -08:00
zs.h
…