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d1ec8a2eab
linux/drivers/tty
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Erwan Le Ray d1ec8a2eab serial: stm32: update throttle and unthrottle ops for dma mode 
Disable DMA request line (if enabled) to switch in PIO mode in throttle
ops, so the RX data gets queues into the FIFO. The hardware flow control
is triggered when the RX FIFO is full.

Switch back to DMA mode (re-enable DMA request line) in unthrottle ops.
Hardware flow control is stopped when FIFO is not full anymore.

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/20211020150332.10214-4-erwan.leray@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-21 10:36:29 +02:00
..
hvc tty: hvc: pass DMA capable memory to put_chars() 2021-10-21 10:34:33 +02:00
ipwireless tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
serdev TTY / Serial patches for 5.15-rc1 2021-09-01 09:51:16 -07:00
serial serial: stm32: update throttle and unthrottle ops for dma mode 2021-10-21 10:36:29 +02:00
vt TTY / Serial patches for 5.15-rc1 2021-09-01 09:51:16 -07:00
amiserial.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
ehv_bytechan.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
goldfish.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
Kconfig This pull request contains the following changes for UML: 2021-07-09 10:19:13 -07:00
Makefile tty: remove broken r3964 line discipline 2021-05-13 16:57:15 +02:00
mips_ejtag_fdc.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
moxa.c tty: moxa: merge moxa.h into moxa.c 2021-09-14 11:17:27 +02:00
mxser.c mxser: store FCR state in mxser_port::FCR 2021-10-05 14:08:09 +02:00
n_gsm.c tty: n_gsm: Don't ignore write return value in gsmld_output() 2021-10-05 14:05:59 +02:00
n_hdlc.c tty: remove file from n_tty_ioctl_helper 2021-09-22 16:59:13 +02:00
n_null.c tty: make tty_ldisc_ops a param in tty_unregister_ldisc 2021-05-13 16:57:16 +02:00
n_tty.c tty: remove file from n_tty_ioctl_helper 2021-09-22 16:59:13 +02:00
nozomi.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
pty.c tty: pty: correct function name pty_resize() 2021-05-20 16:33:06 +02:00
synclink_gt.c tty: synclink_gt: rename a conflicting function name 2021-09-14 10:51:37 +02:00
sysrq.c tty/sysrq: More intuitive Shift handling 2021-10-10 15:19:43 +02:00
tty_audit.c tty: audit: move some local functions out of tty.h 2021-04-15 10:24:58 +02:00
tty_baudrate.c tty: baudrate: Explicit usage of B0 for encoding input baudrate 2021-10-05 15:00:56 +02:00
tty_buffer.c tty: tty_buffer: Fix the softlockup issue in flush_to_ldisc 2021-10-18 16:53:18 +02:00
tty_io.c tty: Fix data race between tiocsti() and flush_to_ldisc() 2021-08-26 14:51:38 +02:00
tty_ioctl.c tty: remove file from n_tty_ioctl_helper 2021-09-22 16:59:13 +02:00
tty_jobctrl.c tty: tty_jobctrl: Fix 2 incorrectly documented functions 2021-05-20 17:06:15 +02:00
tty_ldisc.c tty: unexport tty_ldisc_release 2021-09-22 16:59:13 +02:00
tty_ldsem.c
tty_mutex.c tty: move some internal tty lock enums and functions out of tty.h 2021-04-15 10:26:58 +02:00
tty_port.c tty: tty_port: Fix coding style issues of block comments 2021-05-13 18:29:13 +02:00
tty.h tty: clean include/linux/tty.h up 2021-04-15 10:32:17 +02:00
ttynull.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
vcc.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00