Since commit 1cf6e8fc8341 ("tty/serial: at91: fix RTS line management when
hardware handshake is enabled"), hardware handshake is not working
anymore on SAM9x5 platforms.
The first two patches fix the hardware handshake when CTS/RTS pins are
handle by GPIOs.
The last patch fixes hardware handshake when CTS/RTS pins are not GPIOs.
Changes since v1:
- Correct patch 1 with the error found by kbuild.
- Add Alexandre's Acked-by on patch 2
- Rewrite patch 3 logic in the light of the on-going discussion
with Cyrille and Alexandre.
NB: patch 2 NEEDS patch 1 to compile.
Richard Genoud (3):
serial: mctrl_gpio: implement mctrl_gpio_use_rtscts
tty/serial: at91: fix hardware handshake with GPIOs
tty/serial: at91: fix hardware handshake when DMA is not used
drivers/tty/serial/atmel_serial.c | 25 +++++++++++++++++--------
drivers/tty/serial/serial_mctrl_gpio.c | 8 ++++++++
drivers/tty/serial/serial_mctrl_gpio.h | 10 ++++++++++
3 files changed, 35 insertions(+), 8 deletions(-)
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