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

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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: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Fabien Parent <fparent@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Fabien Parent 2016-02-23 18:46:08 +01:00 committed by Greg Kroah-Hartman
parent c5e7cbaf3a
commit 9ed5e1ba33
2 changed files with 30 additions and 0 deletions
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28
drivers/staging/greybus/connection.c
View file

@ -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.

2
drivers/staging/greybus/hd.h
View file

@ -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 {