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Commit 64a6d138 authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
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greybus: connection: add CSD connection flag 



Add CSD connection flag that can be specified when allocating a
connection to enable Controlled Segment Dropping in favour of E2EFC
which is enabled by default.

Note that most connections are expected to have E2EFC enabled.

Signed-off-by: default avatarJohan Hovold <johan@hovoldconsulting.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent 27f25c17

drivers/staging/greybus/connection.c

+1 −1
Original line number Diff line number Diff line
@@ -339,7 +339,7 @@ gb_connection_svc_connection_create(struct gb_connection *connection) 
	cport_flags = GB_SVC_CPORT_FLAG_CSV_N;

	if (intf->boot_over_unipro) {

		cport_flags |= GB_SVC_CPORT_FLAG_CSD_N;

	} else {

	} else if (gb_connection_e2efc_enabled(connection)) {

		cport_flags |= GB_SVC_CPORT_FLAG_CSD_N |

				GB_SVC_CPORT_FLAG_E2EFC;

	}

drivers/staging/greybus/connection.h

+7 −0
Original line number Diff line number Diff line
@@ -13,6 +13,8 @@ 
#include <linux/list.h>

#include <linux/kfifo.h>



#define GB_CONNECTION_FLAG_CSD		BIT(0)



enum gb_connection_state {

	GB_CONNECTION_STATE_INVALID	= 0,

	GB_CONNECTION_STATE_DISABLED	= 1,
@@ -81,4 +83,9 @@ void greybus_data_rcvd(struct gb_host_device *hd, u16 cport_id, 
void gb_connection_latency_tag_enable(struct gb_connection *connection);

void gb_connection_latency_tag_disable(struct gb_connection *connection);



static inline bool gb_connection_e2efc_enabled(struct gb_connection *connection)

{

	return !(connection->flags & GB_CONNECTION_FLAG_CSD);

}



#endif /* __CONNECTION_H */