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samv7: raise input flow control warning only for serial drivers

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Hardware flow control for serial requires the usage of DMAC channels
which is not yet supported for SAMv7 MCU. However the same config option
CONFIG_SERIAL_IFLOWCONTROL is also used for USB CDC/ACM flow control which
works well. Therefore the warning message should be raised only if
flow control is configured for USART driver and not for USB CDC/ACM.

Signed-off-by: Michal Lenc <michallenc@seznam.cz>
This commit is contained in:
Michal Lenc 2023-03-04 13:43:57 +01:00 committed by Xiang Xiao
parent 84d8b821e0
commit 1d88bceb79
1 changed files with 14 additions and 6 deletions
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20
arch/arm/src/samv7/sam_config.h
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@ -154,14 +154,22 @@
#undef CONFIG_UART3_IFLOWCONTROL
#undef CONFIG_UART4_IFLOWCONTROL
/* Hardware flow control requires using a DMAC channel (not yet supported) */
/* Hardware flow control requires using a DMAC channel (not yet supported).
* However CONFIG_SERIAL_IFLOWCONTROL is also used for USB CDC/ACM flow
* control which is supported, therefore the warning flag should be raised
* only if flowcontrol is configured for USART drivers.
*/
#ifdef CONFIG_SERIAL_IFLOWCONTROL
# warning XDMAC support is required for RTS hardware flow control
# undef CONFIG_SERIAL_IFLOWCONTROL
# undef CONFIG_USART0_IFLOWCONTROL
# undef CONFIG_USART1_IFLOWCONTROL
# undef CONFIG_USART2_IFLOWCONTROL
# if defined(CONFIG_USART0_IFLOWCONTROL) || \
defined(CONFIG_USART1_IFLOWCONTROL) || \
defined(CONFIG_USART2_IFLOWCONTROL)
# warning XDMAC support is required for RTS hardware flow control
# undef CONFIG_USART0_IFLOWCONTROL
# undef CONFIG_USART1_IFLOWCONTROL
# undef CONFIG_USART2_IFLOWCONTROL
# undef CONFIG_SERIAL_IFLOWCONTROL
# endif
#endif
/* Serial Console ***********************************************************/