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Commit 385227fc authored by David Lin's avatar David Lin Committed by Alex Elder
Browse files

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: default avatarDavid Lin <dtwlin@google.com>
Reviewed-by: default avatarJohan Hovold <johan@hovoldconsulting.com>
Signed-off-by: default avatarAlex Elder <elder@linaro.org>
parent 30ea26bd

drivers/staging/greybus/control.c

+24 −0
Original line number Diff line number Diff line
@@ -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)

{

drivers/staging/greybus/control.h

+1 −0
Original line number Diff line number Diff line
@@ -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 */

drivers/staging/greybus/greybus_protocols.h

+1 −0
Original line number Diff line number Diff line
@@ -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;