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greybus: svc: implement connection_quiescing call

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Implement Greybus remote call to connection_quiescing operation. This
operation disables flow contorl for the connection and resets associated
attributes.

Testing done: tested along with required NuttX firmware changes, booted
EVT2, inserted module, removed module, inserted module. Verified module
was functioning as expected.

Signed-off-by: Jeffrey Carlyle <jcarlyle@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Jeffrey Carlyle 2016-06-07 08:22:22 -07:00 committed by Greg Kroah-Hartman
parent 423042f4b2
commit 109fbdfd6a
2 changed files with 34 additions and 1 deletions
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12
drivers/staging/greybus/greybus_protocols.h
View File

@ -904,6 +904,7 @@ struct gb_spi_transfer_response {
#define GB_SVC_TYPE_TIMESYNC_WAKE_PINS_ACQUIRE 0x18
#define GB_SVC_TYPE_TIMESYNC_WAKE_PINS_RELEASE 0x19
#define GB_SVC_TYPE_TIMESYNC_PING 0x1a
#define GB_SVC_TYPE_CONN_QUIESCING 0x1e
#define GB_SVC_TYPE_MODULE_INSERTED 0x1f
#define GB_SVC_TYPE_MODULE_REMOVED 0x20
#define GB_SVC_TYPE_INTF_VSYS_ENABLE 0x21
@ -1215,6 +1216,17 @@ struct gb_svc_intf_mailbox_event_request {
} __packed;
/* intf_mailbox_event response has no payload */
struct gb_svc_conn_quiescing_request {
__u8 intf1_id;
__le16 cport1_id;
__u8 intf2_id;
__le16 cport2_id;
} __packed;
struct gb_svc_conn_quiescing_response {
__u8 status;
} __packed;
/* RAW */

23
drivers/staging/greybus/svc.c
View File

@ -441,10 +441,31 @@ EXPORT_SYMBOL_GPL(gb_svc_connection_create);
void gb_svc_connection_quiescing(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
u8 intf2_id, u16 cport2_id)
{
/* FIXME: implement */
struct gb_svc_conn_quiescing_request request;
struct gb_svc_conn_quiescing_response response;
int ret;
dev_dbg(&svc->dev, "%s - (%u:%u %u:%u)\n", __func__,
intf1_id, cport1_id, intf2_id, cport2_id);
request.intf1_id = intf1_id;
request.cport1_id = cpu_to_le16(cport1_id);
request.intf2_id = intf2_id;
request.cport2_id = cpu_to_le16(cport2_id);
ret = gb_operation_sync(svc->connection, GB_SVC_TYPE_CONN_QUIESCING,
&request, sizeof(request),
&response, sizeof(response));
if (ret < 0)
return;
if (response.status != GB_SVC_OP_SUCCESS) {
dev_err(&svc->dev, "quiescing connection failed (%u:%u %u:%u): %u\n",
intf1_id, cport1_id, intf2_id, cport2_id,
response.status);
return;
}
return;
}
EXPORT_SYMBOL_GPL(gb_svc_connection_quiescing);