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6eeb348c8482862a788a2903e3fc45e76d4ea6b5
linux/drivers/tty/serial
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Erwan Le Ray 6eeb348c84 serial: stm32: terminate / restart DMA transfer at suspend / resume 
DMA prevents the system to suspend when an UART RX wake-up source is
using DMA. DMA can't suspend while DMA channels are still active.

Terminate DMA transfer at suspend, and restart a new DMA transfer at
resume. Create stm32_usart_start_rx_dma_cyclic function to factorize
dma RX initialization. Move RX DMA code related to wakeup into
stm32_usart_serial_en_wakeup() routine to ease further improvements
on wakeup from low power modes.

Don't enable/disable wakeup on uninitialized port.

There may be data residue in the RX FIFO while suspending. Flush it at
suspend time. Receiver timeout interrupt won't trigger later in low power
mode, so call stm32_usart_receive_chars() in case there's data to handle.

Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com>
Link: https://lore.kernel.org/r/20211025134229.8456-3-erwan.leray@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-26 19:18:47 +02:00
..
8250
serial: 8250_pci: Remove empty stub pci_quatech_exit()
2021-10-26 19:18:10 +02:00
cpm_uart
tty: make use of tty_get_{char,frame}_size
2021-06-15 14:03:27 +02:00
jsm
tty: serial: jsm: hold port lock when reporting modem line changes
2021-07-21 12:36:48 +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: amba-pl010: drop low-latency workaround
2021-04-22 12:09:24 +02:00
amba-pl011.c
Revert "arm pl011 serial: support multi-irq request"
2021-08-16 18:52:08 +02:00
amba-pl011.h
…
apbuart.c
serial: apbuart: drop low-latency workaround
2021-04-22 12:09:25 +02:00
apbuart.h
…
ar933x_uart.c
serial: ar933x: drop low-latency workaround
2021-04-22 12:09:25 +02:00
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: use macros instead of hardcoded values
2021-10-10 15:20:09 +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
…
digicolor-usart.c
…
dz.c
tty: serial: dz: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:11 +02:00
dz.h
…
earlycon-arm-semihost.c
…
earlycon-riscv-sbi.c
…
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
tty: serial: fsl_lpuart: do software reset for imx7ulp and imx8qxp
2021-08-26 14:49:20 +02:00
icom.c
tty: serial: icom: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:11 +02:00
icom.h
tty: serial: Use the correct style for SPDX License Identifier
2020-03-07 09:52:01 +01:00
imx_earlycon.c
tty: serial: imx: add imx earlycon driver
2020-07-29 17:11:02 +02:00
imx.c
serial: imx: disable console clocks on unregister
2021-10-21 10:30:08 +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
…
Kconfig
tty: serial: samsung: describe driver in KConfig
2021-10-05 14:04:13 +02:00
kgdb_nmi.c
tty: drop put_tty_driver
2021-07-27 12:17:21 +02:00
kgdboc.c
Merge 5.8-rc6 into tty-next
2020-07-20 09:39:11 +02:00
lantiq.c
tty/serial/lantiq: convert comma to semicolon
2020-12-28 16:10:50 +01:00
liteuart.c
serial: liteuart: Add support for earlycon
2021-05-20 16:35:01 +02:00
lpc32xx_hs.c
serial: lpc32xx_hs: drop low-latency workaround
2021-04-22 12:09:25 +02:00
Makefile
Revert "tty: serial: Add UART driver for Cortina-Access platform"
2021-06-24 14:46:32 +02:00
max310x.c
serial: max310x: Make max310x_remove() return void
2021-10-13 14:33:59 +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
tty: serial: meson: retrieve port FIFO size from DT
2021-05-20 16:11:20 +02:00
milbeaut_usio.c
…
mpc52xx_uart.c
serial: mpc52xx_uart: drop low-latency workaround
2021-04-22 12:09:25 +02:00
mps2-uart.c
…
msm_serial.c
serial: msm_serial: drop low-latency workaround
2021-04-22 12:09:25 +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: fix driver's tx_empty callback
2021-09-14 10:07:10 +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
serial: owl: drop low-latency workaround
2021-04-22 12:09:25 +02:00
pch_uart.c
serial: pch_uart: fix build error with !CONFIG_DEBUG_FS
2021-03-23 10:31:09 +01:00
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: drop low-latency workaround
2021-04-22 12:09:26 +02:00
rp2.c
serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait'
2021-05-21 20:34:02 +02:00
sa1100.c
serial: sa1100: drop low-latency workaround
2021-04-22 12:09:26 +02:00
samsung_tty.c
tty: serial: samsung: Improve naming for common macro
2021-10-10 15:20:16 +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
serial: sc16is7xx: Make sc16is7xx_remove() return void
2021-10-13 14:34:07 +02:00
sccnxp.c
tty/serial: Migrate sccnxp to use has_sysrq
2019-12-18 15:05:00 +01:00
serial_core.c
serial: core: Fix initializing and restoring termios speed
2021-10-05 15:02:44 +02:00
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
tty: serial: txx9: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:12 +02:00
serial-tegra.c
serial: tegra: Use of_device_get_match_data
2021-08-26 14:51:10 +02:00
sh-sci.c
serial: sh-sci: fix break handling for sysrq
2021-08-16 18:53:40 +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: set pointer to NULL rather than 0.
2021-10-05 14:54:21 +02:00
sprd_serial.c
serial: sprd: remove redundant sprd_port cleanup
2020-03-18 12:20:04 +01:00
st-asc.c
tty: serial: st-asc: Demote a kernel-doc formatting abuse
2021-05-20 17:06:17 +02:00
stm32-usart.c
serial: stm32: terminate / restart DMA transfer at suspend / resume
2021-10-26 19:18:47 +02:00
stm32-usart.h
serial: stm32: update throttle and unthrottle ops for dma mode
2021-10-21 10:36:29 +02:00
suncore.c
…
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
…
sunsu.c
tty: serial: sunsu: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:12 +02:00
sunzilog.c
serial: sunzilog: Mark sunzilog_putchar() __maybe_unused
2021-10-26 19:15:04 +02:00
sunzilog.h
…
tegra-tcu.c
serial: tegra-tcu: Reorder channel initialization
2021-06-15 14:02:06 +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: Prevent changing fixed parameters
2021-09-14 10:05:32 +02:00
ucc_uart.c
firmware: replace HOTPLUG with UEVENT in FW_ACTION defines
2021-05-13 16:14:45 +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
serial: xilinx_uartps: Fix race condition causing stuck TX
2021-10-26 19:17:05 +02:00
zs.c
Merge tag 'tty-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
2020-01-29 10:13:27 -08:00
zs.h
…