Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
serial: stm32: add support for break control
Add support for break control to the stm32 serial driver.
Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com>
Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20230906151547.840302-1-valentin.caron@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
authored by
Erwan Le Ray
and committed by
Greg Kroah-Hartman
30e94586
46c4699d
+12
-1
+12
-1
drivers/tty/serial/stm32-usart.c
+12
-1
drivers/tty/serial/stm32-usart.c
···
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stm32_usart_clr_bits(port, ofs->cr3, stm32_port->cr3_irq);
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}
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-
/* Handle breaks - ignored by us */
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static void stm32_usart_break_ctl(struct uart_port *port, int break_state)
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{
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struct stm32_port *stm32_port = to_stm32_port(port);
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const struct stm32_usart_offsets *ofs = &stm32_port->info->ofs;
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unsigned long flags;
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spin_lock_irqsave(&port->lock, flags);
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+
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if (break_state)
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stm32_usart_set_bits(port, ofs->rqr, USART_RQR_SBKRQ);
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else
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stm32_usart_clr_bits(port, ofs->rqr, USART_RQR_SBKRQ);
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spin_unlock_irqrestore(&port->lock, flags);
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}
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static int stm32_usart_startup(struct uart_port *port)