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greybus: control: add bundle deactivate and activate operation 

Add the AP implementation for the Greybus Control Bundle Deactivate
Operation. This operation requests a Bundle to enter the BUNDLE_OFF
state. All Connections associated with the Bundle must be closed prior
sending this operation.

Add the AP implementation for the Greybus Control Bundle Activate
Operation. This operation requests a specific Bundle to transition from
the BUNDLE_OFF state to the BUNDLE_ACTIVE state.

[elder@linaro.org: fixed a typo pointed out by Johan]

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 2c8e8841e3
commit f61908f94a
3 changed files with 54 additions and 0 deletions
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50
drivers/staging/greybus/control.c
View File

@ -298,6 +298,56 @@ int gb_control_bundle_resume(struct gb_control *control, u8 bundle_id)
return 0; return 0;
} }
int gb_control_bundle_deactivate(struct gb_control *control, u8 bundle_id)
{
struct gb_control_bundle_pm_request request;
struct gb_control_bundle_pm_response response;
int ret;
request.bundle_id = bundle_id;
ret = gb_operation_sync(control->connection,
GB_CONTROL_TYPE_BUNDLE_DEACTIVATE, &request,
sizeof(request), &response, sizeof(response));
if (ret) {
dev_err(&control->dev,
"failed to send bundle deactivate: %d\n", ret);
return ret;
}
if (response.status != GB_CONTROL_BUNDLE_PM_OK) {
dev_err(&control->dev,
"bundle error while deactivating: %d\n", response.status);
return gb_control_bundle_pm_status_map(response.status);
}
return 0;
}
int gb_control_bundle_activate(struct gb_control *control, u8 bundle_id)
{
struct gb_control_bundle_pm_request request;
struct gb_control_bundle_pm_response response;
int ret;
request.bundle_id = bundle_id;
ret = gb_operation_sync(control->connection,
GB_CONTROL_TYPE_BUNDLE_ACTIVATE, &request,
sizeof(request), &response, sizeof(response));
if (ret) {
dev_err(&control->dev,
"failed to send bundle activate: %d\n", ret);
return ret;
}
if (response.status != GB_CONTROL_BUNDLE_PM_OK) {
dev_err(&control->dev,
"bundle error while activating: %d\n", response.status);
return gb_control_bundle_pm_status_map(response.status);
}
return 0;
}
static ssize_t vendor_string_show(struct device *dev, static ssize_t vendor_string_show(struct device *dev,
struct device_attribute *attr, char *buf) struct device_attribute *attr, char *buf)
{ {

2
drivers/staging/greybus/control.h
View File

@ -54,4 +54,6 @@ int gb_control_timesync_authoritative(struct gb_control *control,
u64 *frame_time); u64 *frame_time);
int gb_control_bundle_suspend(struct gb_control *control, u8 bundle_id); int gb_control_bundle_suspend(struct gb_control *control, u8 bundle_id);
int gb_control_bundle_resume(struct gb_control *control, u8 bundle_id); int gb_control_bundle_resume(struct gb_control *control, u8 bundle_id);
int gb_control_bundle_deactivate(struct gb_control *control, u8 bundle_id);
int gb_control_bundle_activate(struct gb_control *control, u8 bundle_id);
#endif /* __CONTROL_H */ #endif /* __CONTROL_H */

2
drivers/staging/greybus/greybus_protocols.h
View File

@ -128,6 +128,8 @@ struct gb_protocol_version_response {
#define GB_CONTROL_TYPE_MODE_SWITCH 0x0e #define GB_CONTROL_TYPE_MODE_SWITCH 0x0e
#define GB_CONTROL_TYPE_BUNDLE_SUSPEND 0x0f #define GB_CONTROL_TYPE_BUNDLE_SUSPEND 0x0f
#define GB_CONTROL_TYPE_BUNDLE_RESUME 0x10 #define GB_CONTROL_TYPE_BUNDLE_RESUME 0x10
#define GB_CONTROL_TYPE_BUNDLE_DEACTIVATE 0x11
#define GB_CONTROL_TYPE_BUNDLE_ACTIVATE 0x12
struct gb_control_version_request { struct gb_control_version_request {
__u8 major; __u8 major;