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greybus: svc: define the version request

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Define the SVC version request, which need not need to stay the same as
the legacy version request.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Johan Hovold 2016-04-29 17:08:36 +02:00 committed by Greg Kroah-Hartman
parent b1f8bfea65
commit a2cf2e5946
2 changed files with 14 additions and 8 deletions
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14
drivers/staging/greybus/greybus_protocols.h
View File

@ -781,6 +781,7 @@ struct gb_spi_transfer_response {
#define GB_SVC_VERSION_MINOR 0x01
/* Greybus SVC request types */
#define GB_SVC_TYPE_PROTOCOL_VERSION 0x01
#define GB_SVC_TYPE_SVC_HELLO 0x02
#define GB_SVC_TYPE_INTF_DEVICE_ID 0x03
#define GB_SVC_TYPE_INTF_HOTPLUG 0x04
@ -808,10 +809,15 @@ struct gb_spi_transfer_response {
#define GB_SVC_TYPE_INTF_ACTIVATE 0x27
#define GB_SVC_TYPE_INTF_MAILBOX_EVENT 0x29
/*
* SVC version request/response has the same payload as
* gb_protocol_version_request/response.
*/
struct gb_svc_version_request {
__u8 major;
__u8 minor;
} __packed;
struct gb_svc_version_response {
__u8 major;
__u8 minor;
} __packed;
/* SVC protocol hello request */
struct gb_svc_hello_request {

8
drivers/staging/greybus/svc.c
View File

@ -465,8 +465,8 @@ static int gb_svc_version_request(struct gb_operation *op)
{
struct gb_connection *connection = op->connection;
struct gb_svc *svc = gb_connection_get_data(connection);
struct gb_protocol_version_request *request;
struct gb_protocol_version_response *response;
struct gb_svc_version_request *request;
struct gb_svc_version_response *response;
if (op->request->payload_size < sizeof(*request)) {
dev_err(&svc->dev, "short version request (%zu < %zu)\n",
@ -1192,7 +1192,7 @@ static int gb_svc_request_handler(struct gb_operation *op)
* need to protect 'state' for any races.
*/
switch (type) {
case GB_REQUEST_TYPE_PROTOCOL_VERSION:
case GB_SVC_TYPE_PROTOCOL_VERSION:
if (svc->state != GB_SVC_STATE_RESET)
ret = -EINVAL;
break;
@ -1213,7 +1213,7 @@ static int gb_svc_request_handler(struct gb_operation *op)
}
switch (type) {
case GB_REQUEST_TYPE_PROTOCOL_VERSION:
case GB_SVC_TYPE_PROTOCOL_VERSION:
ret = gb_svc_version_request(op);
if (!ret)
svc->state = GB_SVC_STATE_PROTOCOL_VERSION;