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path: root/drivers/firmware/arm_scmi/driver.c
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Diffstat (limited to 'drivers/firmware/arm_scmi/driver.c')
-rw-r--r--drivers/firmware/arm_scmi/driver.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 27213bf768c0..563a64131035 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -113,6 +113,7 @@ struct scmi_protocol_instance {
* @protocols_mtx: A mutex to protect protocols instances initialization.
* @protocols_imp: List of protocols implemented, currently maximum of
* MAX_PROTOCOLS_IMP elements allocated by the base protocol
+ * @notify_priv: Pointer to private data structure specific to notifications.
* @node: List head
* @users: Number of users of this instance
*/
@@ -129,6 +130,7 @@ struct scmi_info {
/* Ensure mutual exclusive access to protocols instance array */
struct mutex protocols_mtx;
u8 *protocols_imp;
+ void *notify_priv;
struct list_head node;
int users;
};
@@ -170,6 +172,25 @@ static inline void scmi_dump_header_dbg(struct device *dev,
hdr->id, hdr->seq, hdr->protocol_id);
}
+void scmi_notification_instance_data_set(const struct scmi_handle *handle,
+ void *priv)
+{
+ struct scmi_info *info = handle_to_scmi_info(handle);
+
+ info->notify_priv = priv;
+ /* Ensure updated protocol private date are visible */
+ smp_wmb();
+}
+
+void *scmi_notification_instance_data_get(const struct scmi_handle *handle)
+{
+ struct scmi_info *info = handle_to_scmi_info(handle);
+
+ /* Ensure protocols_private_data has been updated */
+ smp_rmb();
+ return info->notify_priv;
+}
+
/**
* scmi_xfer_get() - Allocate one message
*