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From:   Cristian Marussi <cristian.marussi@arm.com>
To:     linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc:     sudeep.holla@arm.com, james.quinlan@broadcom.com,
        Jonathan.Cameron@Huawei.com, f.fainelli@gmail.com,
        etienne.carriere@linaro.org, vincent.guittot@linaro.org,
        souvik.chakravarty@arm.com, wleavitt@marvell.com,
        peter.hilber@opensynergy.com, nicola.mazzucato@arm.com,
        tarek.el-sherbiny@arm.com, quic_kshivnan@quicinc.com,
        cristian.marussi@arm.com
Subject: [PATCH v8 04/17] firmware: arm_scmi: Add flags field to xfer
Date:   Wed, 18 Jan 2023 12:14:13 +0000
Message-Id: <20230118121426.492864-5-cristian.marussi@arm.com>
In-Reply-To: <20230118121426.492864-1-cristian.marussi@arm.com>
References: <20230118121426.492864-1-cristian.marussi@arm.com>
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Add a flags field to xfer and define a flagbit and related macro to easily
identify xfers originated from Raw transmissions.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
---
v5 --> v6
- convert is_raw boolean to a bitflag
---
 drivers/firmware/arm_scmi/protocols.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/firmware/arm_scmi/protocols.h b/drivers/firmware/arm_scmi/protocols.h
index 2f3bf691db7c..b5941beb8b03 100644
--- 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;
-- 
2.34.1