firmware: arm_scmi: Add flags field to xfer

Add a 'flags' field to xfer and define a flagbit and related macro to easily
identify xfers originated from the raw transmissions.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20230118121426.492864-5-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

diff --git a/drivers/firmware/arm_scmi/protocols.h b/drivers/firmware/arm_scmi/protocols.h
index 2f3bf69..b5941be 100644 (file)
--- a/drivers/firmware/arm_scmi/protocols.h
+++ b/drivers/firmware/arm_scmi/protocols.h
@@ -115,6 +115,7 @@ struct scmi_msg_hdr {
  *         - SCMI_XFER_SENT_OK -> SCMI_XFER_RESP_OK [ -> SCMI_XFER_DRESP_OK ]
  *         - SCMI_XFER_SENT_OK -> SCMI_XFER_DRESP_OK
  *           (Missing synchronous response is assumed OK and ignored)
+ * @flags: Optional flags associated to this xfer.
  * @lock: A spinlock to protect state and busy fields.
  * @priv: A pointer for transport private usage.
  */
@@ -135,6 +136,9 @@ struct scmi_xfer {
 #define SCMI_XFER_RESP_OK      1
 #define SCMI_XFER_DRESP_OK     2
        int state;
+#define SCMI_XFER_FLAG_IS_RAW  BIT(0)
+#define SCMI_XFER_IS_RAW(x)    ((x)->flags & SCMI_XFER_FLAG_IS_RAW)
+       int flags;
        /* A lock to protect state and busy fields */
        spinlock_t lock;
        void *priv;