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greybus: control: add interface hibernate abort operation 

Add the AP implementation for the Greybus Control Hibernate Abort
Operation. AP may use this Operation to abort a previous Control
Interface Suspend or Control Interface Deactivate Prepare Operation.

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
This commit is contained in:
David Lin 2016-07-07 22:07:00 -05:00 committed by Alex Elder
parent 30ea26bdd4
commit 385227fce6
3 changed files with 26 additions and 0 deletions
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24
drivers/staging/greybus/control.c
View File

@ -406,6 +406,30 @@ int gb_control_interface_deactivate_prepare(struct gb_control *control)
return 0;
}
int gb_control_interface_hibernate_abort(struct gb_control *control)
{
struct gb_control_intf_pm_response response;
int ret;
ret = gb_operation_sync(control->connection,
GB_CONTROL_TYPE_INTF_HIBERNATE_ABORT, NULL, 0,
&response, sizeof(response));
if (ret) {
dev_err(&control->dev,
"failed to send interface aborting hibernate: %d\n",
ret);
return ret;
}
if (response.status != GB_CONTROL_INTF_PM_OK) {
dev_err(&control->dev, "interface error while aborting hibernate: %d\n",
response.status);
return gb_control_interface_pm_status_map(response.status);
}
return 0;
}
static ssize_t vendor_string_show(struct device *dev,
struct device_attribute *attr, char *buf)
{

1
drivers/staging/greybus/control.h
View File

@ -58,4 +58,5 @@ int gb_control_bundle_deactivate(struct gb_control *control, u8 bundle_id);
int gb_control_bundle_activate(struct gb_control *control, u8 bundle_id);
int gb_control_interface_suspend_prepare(struct gb_control *control);
int gb_control_interface_deactivate_prepare(struct gb_control *control);
int gb_control_interface_hibernate_abort(struct gb_control *control);
#endif /* __CONTROL_H */

1
drivers/staging/greybus/greybus_protocols.h
View File

@ -132,6 +132,7 @@ struct gb_protocol_version_response {
#define GB_CONTROL_TYPE_BUNDLE_ACTIVATE 0x12
#define GB_CONTROL_TYPE_INTF_SUSPEND_PREPARE 0x13
#define GB_CONTROL_TYPE_INTF_DEACTIVATE_PREPARE 0x14
#define GB_CONTROL_TYPE_INTF_HIBERNATE_ABORT 0x15
struct gb_control_version_request {
__u8 major;