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linux/drivers/tty/serial
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Ilpo Järvinen 2ac6276864 serial: 8250_lpss: Use 16B DMA burst with Elkhart Lake 
commit 7090abd6ad upstream.

Configure DMA to use 16B burst size with Elkhart Lake. This makes the
bus use more efficient and works around an issue which occurs with the
previously used 1B.

The fix was initially developed by Srikanth Thokala and Aman Kumar.
This together with the previous config change is the cleaned up version
of the original fix.

Fixes: 0a9410b981 ("serial: 8250_lpss: Enable DMA on Intel Elkhart Lake")
Cc: <stable@vger.kernel.org> # serial: 8250_lpss: Configure DMA also w/o DMA filter
Reported-by: Wentong Wu <wentong.wu@intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20221108121952.5497-4-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2022-11-26 09:24:49 +01:00
..
8250 serial: 8250_lpss: Use 16B DMA burst with Elkhart Lake 2022-11-26 09:24:49 +01:00
cpm_uart serial: cpm_uart: Fix build error without CONFIG_SERIAL_CPM_CONSOLE 2022-06-14 18:36:08 +02:00
jsm drivers: serial: jsm: fix some leaks in probe 2022-10-26 12:35:13 +02:00
21285.c tty: serial: 21285: fix lockup on open 2020-10-28 13:39:14 +01:00
altera_jtaguart.c serial: altera_jtaguart: drop low-latency workaround 2021-04-22 12:09:24 +02:00
altera_uart.c serial: altera_uart: drop low-latency workaround 2021-04-22 12:09:24 +02:00
amba-pl010.c serial: pl010: Drop CR register reset on set_termios 2022-01-27 11:04:54 +01:00
amba-pl011.c serial: pl011: UPSTAT_AUTORTS requires .throttle/unthrottle 2022-07-21 21:24:43 +02:00
amba-pl011.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
apbuart.c serial: apbuart: drop low-latency workaround 2021-04-22 12:09:25 +02:00
apbuart.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ar933x_uart.c serial: ar933x: Deassert Transmit Enable on ->rs485_config() 2022-11-10 18:15:24 +01:00
arc_uart.c tty: cumulate and document tty_struct::flow* members 2021-05-13 16:57:16 +02:00
atmel_serial.c tty: serial: atmel: Preserve previous USART mode if RS485 disabled 2022-09-23 14:15:46 +02:00
atmel_serial.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
bcm63xx_uart.c serial: bcm63xx: drop low-latency workaround 2021-04-22 12:09:25 +02:00
clps711x.c tty/serial: Migrate clps711x to use has_sysrq 2019-12-18 15:04:46 +01:00
digicolor-usart.c serial: digicolor-usart: Don't allow CS5-6 2022-06-14 18:36:08 +02:00
dz.c tty: serial: dz: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:11 +02:00
dz.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
earlycon-arm-semihost.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
earlycon-riscv-sbi.c tty/serial: use uart_console_write in the RISC-V SBL early console 2019-01-23 15:41:50 -08:00
earlycon.c earlycon: simplify earlycon-table implementation 2020-12-04 15:49:48 +01:00
fsl_linflexuart.c tty: serial: linflexuart: Remove redundant check to simplify the code 2021-08-26 14:51:04 +02:00
fsl_lpuart.c serial: Deassert Transmit Enable on probe in driver-specific way 2022-11-03 23:59:20 +09:00
icom.c tty: Fix a possible resource leak in icom_probe 2022-06-14 18:36:20 +02:00
icom.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
imx.c serial: imx: Add missing .thaw_noirq hook 2022-11-26 09:24:35 +01:00
imx_earlycon.c tty: serial: imx: add imx earlycon driver 2020-07-29 17:11:02 +02:00
ip22zilog.c tty: serial: ip22zilog: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
ip22zilog.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig serial: omap: Only allow if 8250_omap is not selected 2021-07-29 17:03:04 +02:00
kgdb_nmi.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
kgdboc.c kgdboc: fix return value of __setup handler 2022-04-08 14:23:50 +02:00
lantiq.c tty/serial/lantiq: convert comma to semicolon 2020-12-28 16:10:50 +01:00
liteuart.c serial: liteuart: fix MODULE_ALIAS 2022-01-27 11:03:55 +01:00
lpc32xx_hs.c tty: drivers/tty/, stop using tty_schedule_flip() 2022-07-29 17:25:31 +02:00
Makefile Revert "tty: serial: Add UART driver for Cortina-Access platform" 2021-06-24 14:46:32 +02:00
max310x.c Merge 5.14-rc5 into tty-next 2021-08-09 08:52:46 +02:00
max3100.c tty_port: drop last traces of low_latency 2021-01-07 16:17:32 +01:00
mcf.c serial: mcf: drop low-latency workaround 2021-04-22 12:09:25 +02:00
men_z135_uart.c tty: serial, fix kernel-doc 2020-08-18 13:51:18 +02:00
meson_uart.c serial: meson: acquire port->lock in startup() 2022-06-14 18:36:08 +02:00
milbeaut_usio.c tty/serial: Migrate milbeaut_usio to use has_sysrq 2019-12-18 15:04:51 +01:00
mpc52xx_uart.c serial: mpc52xx_uart: drop low-latency workaround 2021-04-22 12:09:25 +02:00
mps2-uart.c serial: mps2-uart: Add parentheses around conditional in mps2_uart_shutdown 2019-01-31 19:34:10 +01:00
msm_serial.c serial: msm_serial: disable interrupts in __msm_console_write() 2022-06-14 18:36:22 +02:00
mux.c parisc: Make struct parisc_driver::remove() return void 2021-08-30 10:18:25 +02:00
mvebu-uart.c serial: mvebu-uart: uart2 error bits clearing 2022-08-17 14:22:56 +02:00
mxs-auart.c tty: make use of tty_get_{char,frame}_size 2021-06-15 14:03:27 +02:00
omap-serial.c serial: omap: Disable PM runtime autoidle to remove pm_runtime_irq_safe() 2021-07-29 17:03:04 +02:00
owl-uart.c tty: serial: owl: Fix missing clk_disable_unprepare() in owl_uart_probe 2022-06-14 18:36:03 +02:00
pch_uart.c serial: pch: don't overwrite xmit->buf[0] by x_char 2022-06-09 10:23:29 +02:00
pic32_uart.c serial: pic32_uart: Use uart_console() helper 2020-03-12 10:00:22 +01:00
pic32_uart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
pmac_zilog.c tty: serial: pmac_zilog: include <linux/io.h> insteiad of <asm/io.h> 2021-05-13 18:29:12 +02:00
pmac_zilog.h tty: serial: pmac_zilog: Remove unused disposable variable 'garbage' 2020-11-13 15:28:27 +01:00
pxa.c tty/serial: Migrate pxa to use has_sysrq 2019-12-18 15:04:57 +01:00
qcom_geni_serial.c serial: qcom_geni_serial: use DT aliases according to DT bindings 2021-06-24 14:51:28 +02:00
rda-uart.c serial: rda-uart: Don't allow CS5-6 2022-06-14 18:36:08 +02:00
rp2.c serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait' 2021-05-21 20:34:02 +02:00
sa1100.c drivers: tty: serial: Fix deadlock in sa1100_set_termios() 2022-06-14 18:36:21 +02:00
samsung_tty.c tty: serial: samsung_tty: set dma burst_size to 1 2022-07-21 21:24:42 +02:00
sb1250-duart.c tty: serial: sb1250-duart: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
sc16is7xx.c Revert "serial: sc16is7xx: Clear RS485 bits in the shutdown" 2022-07-12 16:35:11 +02:00
sccnxp.c tty/serial: Migrate sccnxp to use has_sysrq 2019-12-18 15:05:00 +01:00
serial-tegra.c serial: tegra: Use uart_xmit_advance(), fixes icount.tx accounting 2022-09-28 11:11:54 +02:00
serial_core.c serial: Deassert Transmit Enable on probe in driver-specific way 2022-11-03 23:59:20 +09:00
serial_mctrl_gpio.c serial: mctrl_gpio: Fix passing zero to 'ERR_PTR' warning 2020-11-06 17:12:05 +01:00
serial_mctrl_gpio.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
serial_txx9.c serial: txx9: Don't allow CS5-6 2022-06-14 18:36:08 +02:00
sh-sci.c serial: sh-sci: Don't allow CS5-6 2022-06-14 18:36:08 +02:00
sh-sci.h serial: sh-sci: Add support for RZ/G2L SoC 2021-06-04 15:12:40 +02:00
sifive.c serial: sifive: Sanitize CSIZE and c_iflag 2022-06-14 18:36:08 +02:00
sprd_serial.c serial: sprd: remove redundant sprd_port cleanup 2020-03-18 12:20:04 +01:00
st-asc.c serial: st-asc: Sanitize CSIZE and correct PARENB for CS7 2022-06-14 18:36:08 +02:00
stm32-usart.c serial: stm32: Clear prev values before setting RTS delays 2022-07-21 21:24:43 +02:00
stm32-usart.h serial: stm32: add FIFO threshold configuration 2021-04-22 12:11:25 +02:00
suncore.c tty: Use of_node_name_{eq,prefix} for node name comparisons 2018-12-17 16:12:17 +01:00
sunhv.c Revert "serial: sunhv: Initialize lock for non-registered console" 2020-07-21 18:21:49 +02:00
sunsab.c tty: serial: sunsab: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
sunsab.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sunsu.c tty: serial: sunsu: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
sunzilog.c tty: serial: sunzilog: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
sunzilog.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tegra-tcu.c serial: tegra-tcu: Use uart_xmit_advance(), fixes icount.tx accounting 2022-09-28 11:11:54 +02:00
timbuart.c serial: timbuart: drop low-latency workaround 2021-04-22 12:09:26 +02:00
timbuart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
uartlite.c tty: serial: uartlite: allow 64 bit address 2022-01-27 11:03:25 +01:00
ucc_uart.c tty: serial: Fix refcount leak bug in ucc_uart.c 2022-08-25 11:40:40 +02:00
vr41xx_siu.c tty: serial: vr41xx_siu: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
vt8500_serial.c serial: vt8500: Use of_device_get_match_data 2021-08-26 14:51:10 +02:00
xilinx_uartps.c tty: xilinx_uartps: Fix the ignore_status 2022-10-26 12:35:05 +02:00
zs.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
zs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00