Commit 9ed5e1ba authored by Fabien Parent's avatar Fabien Parent Committed by Greg Kroah-Hartman
Browse files

greybus: connection: add api to {en,dis}able unipro fct flow 



In order to support mailbox-free control cport init on the bridges the AP must
be able to enable/disable the flow of unipro fct tokens. Add a new API that
will enable or disable on APBA the flow of fct tokens.

Reviewed-by: default avatarJohan Hovold <johan@hovoldconsulting.com>
Signed-off-by: default avatarFabien Parent <fparent@baylibre.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent c5e7cbaf

drivers/staging/greybus/connection.c

+28 −0
Original line number Diff line number Diff line
@@ -274,6 +274,34 @@ static void gb_connection_hd_cport_disable(struct gb_connection *connection) 
	hd->driver->cport_disable(hd, connection->hd_cport_id);

}



static int gb_connection_hd_fct_flow_enable(struct gb_connection *connection)

{

	struct gb_host_device *hd = connection->hd;

	int ret;



	if (!hd->driver->fct_flow_enable)

		return 0;



	ret = hd->driver->fct_flow_enable(hd, connection->hd_cport_id);

	if (ret) {

		dev_err(&hd->dev, "%s: failed to enable FCT flow: %d\n",

			connection->name, ret);

		return ret;

	}



	return 0;

}



static void gb_connection_hd_fct_flow_disable(struct gb_connection *connection)

{

	struct gb_host_device *hd = connection->hd;



	if (!hd->driver->fct_flow_disable)

		return;



	hd->driver->fct_flow_disable(hd, connection->hd_cport_id);

}



/*

 * Request the SVC to create a connection from AP's cport to interface's

 * cport.

drivers/staging/greybus/hd.h

+2 −0
Original line number Diff line number Diff line
@@ -25,6 +25,8 @@ struct gb_hd_driver { 
	int (*latency_tag_disable)(struct gb_host_device *hd, u16 cport_id);

	int (*output)(struct gb_host_device *hd, void *req, u16 size, u8 cmd,

		      bool async);

	int (*fct_flow_enable)(struct gb_host_device *hd, u16 cport_id);

	int (*fct_flow_disable)(struct gb_host_device *hd, u16 cport_id);

};



struct gb_host_device {

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