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rpmsg: char: Add RPMSG GET/SET FLOWCONTROL IOCTL support

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Add RPMSG_GET_OUTGOING_FLOWCONTROL and RPMSG_SET_INCOMING_FLOWCONTROL
IOCTL support for rpmsg char device nodes to get/set the low level
transport signals.

Signed-off-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Deepak Kumar Singh <quic_deesin@quicinc.com>
Signed-off-by: Sarannya S <quic_sarannya@quicinc.com>
Acked-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Link: https://lore.kernel.org/r/1688679698-31274-4-git-send-email-quic_sarannya@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
This commit is contained in:
Chris Lew
2023-07-07 03:11:38 +05:30
committed by Bjorn Andersson
parent a2b73aa512
commit 5550201c0f
2 changed files with 58 additions and 6 deletions
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include/uapi/linux/rpmsg.h
+10
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@@ -43,4 +43,14 @@ struct rpmsg_endpoint_info {
*/
#define RPMSG_RELEASE_DEV_IOCTL _IOW(0xb5, 0x4, struct rpmsg_endpoint_info)
/**
* Get the flow control state of the remote rpmsg char device.
*/
#define RPMSG_GET_OUTGOING_FLOWCONTROL _IOR(0xb5, 0x5, int)
/**
* Set the flow control state of the local rpmsg char device.
*/
#define RPMSG_SET_INCOMING_FLOWCONTROL _IOR(0xb5, 0x6, int)
#endif