firmware: arm_scmi: Add optional flags to extended names helper

Some recently added SCMI protocols needs an additional flags parameter to
be able to properly configure the command used to query the extended name
of a resource.

Modify extended_name_get helper accordingly.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20231114145449.3136412-1-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

9 files changed, 18 insertions, 12 deletions

diff --git a/drivers/firmware/arm_scmi/clock.c b/drivers/firmware/arm_scmi/clock.c
index 42b81c181d68..98511a3aa367 100644
--- a/drivers/firmware/arm_scmi/clock.c
+++ b/drivers/firmware/arm_scmi/clock.c
@@ -318,7 +318,7 @@ static int scmi_clock_attributes_get(const struct scmi_protocol_handle *ph,
 	if (!ret && PROTOCOL_REV_MAJOR(version) >= 0x2) {
 		if (SUPPORTS_EXTENDED_NAMES(attributes))
 			ph->hops->extended_name_get(ph, CLOCK_NAME_GET, clk_id,
-						    clk->name,
+						    NULL, clk->name,
 						    SCMI_MAX_STR_SIZE);
 
 		if (SUPPORTS_RATE_CHANGED_NOTIF(attributes))
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 09371f40d61f..3eb19ed6f148 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -1438,6 +1438,7 @@ struct scmi_msg_resp_domain_name_get {
  * @ph: A protocol handle reference.
  * @cmd_id: The specific command ID to use.
  * @res_id: The specific resource ID to use.
+ * @flags: A pointer to specific flags to use, if any.
  * @name: A pointer to the preallocated area where the retrieved name will be
  *	  stored as a NULL terminated string.
  * @len: The len in bytes of the @name char array.
@@ -1445,19 +1446,22 @@ struct scmi_msg_resp_domain_name_get {
  * Return: 0 on Succcess
  */
 static int scmi_common_extended_name_get(const struct scmi_protocol_handle *ph,
-					 u8 cmd_id, u32 res_id, char *name,
-					 size_t len)
+					 u8 cmd_id, u32 res_id, u32 *flags,
+					 char *name, size_t len)
 {
 	int ret;
+	size_t txlen;
 	struct scmi_xfer *t;
 	struct scmi_msg_resp_domain_name_get *resp;
 
-	ret = ph->xops->xfer_get_init(ph, cmd_id, sizeof(res_id),
-				      sizeof(*resp), &t);
+	txlen = !flags ? sizeof(res_id) : sizeof(res_id) + sizeof(*flags);
+	ret = ph->xops->xfer_get_init(ph, cmd_id, txlen, sizeof(*resp), &t);
 	if (ret)
 		goto out;
 
 	put_unaligned_le32(res_id, t->tx.buf);
+	if (flags)
+		put_unaligned_le32(*flags, t->tx.buf + sizeof(res_id));
 	resp = t->rx.buf;
 
 	ret = ph->xops->do_xfer(ph, t);
diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index 36cdcfaf4324..d1323c5d9c27 100644
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/drivers/firmware/arm_scmi/perf.c
@@ -288,7 +288,7 @@ scmi_perf_domain_attributes_get(const struct scmi_protocol_handle *ph,
 	if (!ret && PROTOCOL_REV_MAJOR(version) >= 0x3 &&
 	    SUPPORTS_EXTENDED_NAMES(flags))
 		ph->hops->extended_name_get(ph, PERF_DOMAIN_NAME_GET,
-					    dom_info->id, dom_info->info.name,
+					    dom_info->id, NULL, dom_info->info.name,
 					    SCMI_MAX_STR_SIZE);
 
 	if (dom_info->level_indexing_mode) {
diff --git a/drivers/firmware/arm_scmi/power.c b/drivers/firmware/arm_scmi/power.c
index 356e83631664..077767d6e902 100644
--- a/drivers/firmware/arm_scmi/power.c
+++ b/drivers/firmware/arm_scmi/power.c
@@ -133,7 +133,7 @@ scmi_power_domain_attributes_get(const struct scmi_protocol_handle *ph,
 	if (!ret && PROTOCOL_REV_MAJOR(version) >= 0x3 &&
 	    SUPPORTS_EXTENDED_NAMES(flags)) {
 		ph->hops->extended_name_get(ph, POWER_DOMAIN_NAME_GET,
-					    domain, dom_info->name,
+					    domain, NULL, dom_info->name,
 					    SCMI_MAX_STR_SIZE);
 	}
 
diff --git a/drivers/firmware/arm_scmi/powercap.c b/drivers/firmware/arm_scmi/powercap.c
index cb5617443a14..62a7780fedbb 100644
--- a/drivers/firmware/arm_scmi/powercap.c
+++ b/drivers/firmware/arm_scmi/powercap.c
@@ -270,7 +270,7 @@ clean:
 	 */
 	if (!ret && SUPPORTS_EXTENDED_NAMES(flags))
 		ph->hops->extended_name_get(ph, POWERCAP_DOMAIN_NAME_GET,
-					    domain, dom_info->name,
+					    domain, NULL, dom_info->name,
 					    SCMI_MAX_STR_SIZE);
 
 	return ret;
diff --git a/drivers/firmware/arm_scmi/protocols.h b/drivers/firmware/arm_scmi/protocols.h
index 78e1a01eb656..b3c6314bb4b8 100644
--- a/drivers/firmware/arm_scmi/protocols.h
+++ b/drivers/firmware/arm_scmi/protocols.h
@@ -256,7 +256,8 @@ struct scmi_fc_info {
  */
 struct scmi_proto_helpers_ops {
 	int (*extended_name_get)(const struct scmi_protocol_handle *ph,
-				 u8 cmd_id, u32 res_id, char *name, size_t len);
+				 u8 cmd_id, u32 res_id, u32 *flags, char *name,
+				 size_t len);
 	void *(*iter_response_init)(const struct scmi_protocol_handle *ph,
 				    struct scmi_iterator_ops *ops,
 				    unsigned int max_resources, u8 msg_id,
diff --git a/drivers/firmware/arm_scmi/reset.c b/drivers/firmware/arm_scmi/reset.c
index e9afa8cab730..7217fd7c6afa 100644
--- a/drivers/firmware/arm_scmi/reset.c
+++ b/drivers/firmware/arm_scmi/reset.c
@@ -128,7 +128,8 @@ scmi_reset_domain_attributes_get(const struct scmi_protocol_handle *ph,
 	if (!ret && PROTOCOL_REV_MAJOR(version) >= 0x3 &&
 	    SUPPORTS_EXTENDED_NAMES(attributes))
 		ph->hops->extended_name_get(ph, RESET_DOMAIN_NAME_GET, domain,
-					    dom_info->name, SCMI_MAX_STR_SIZE);
+					    NULL, dom_info->name,
+					    SCMI_MAX_STR_SIZE);
 
 	return ret;
 }
diff --git a/drivers/firmware/arm_scmi/sensors.c b/drivers/firmware/arm_scmi/sensors.c
index 0b5853fa9d87..9952a7bc6682 100644
--- a/drivers/firmware/arm_scmi/sensors.c
+++ b/drivers/firmware/arm_scmi/sensors.c
@@ -644,7 +644,7 @@ iter_sens_descr_process_response(const struct scmi_protocol_handle *ph,
 	if (PROTOCOL_REV_MAJOR(si->version) >= 0x3 &&
 	    SUPPORTS_EXTENDED_NAMES(attrl))
 		ph->hops->extended_name_get(ph, SENSOR_NAME_GET, s->id,
-					    s->name, SCMI_MAX_STR_SIZE);
+					    NULL, s->name, SCMI_MAX_STR_SIZE);
 
 	if (s->extended_scalar_attrs) {
 		s->sensor_power = le32_to_cpu(sdesc->power);
diff --git a/drivers/firmware/arm_scmi/voltage.c b/drivers/firmware/arm_scmi/voltage.c
index eaa8d944926a..36e2df77738c 100644
--- a/drivers/firmware/arm_scmi/voltage.c
+++ b/drivers/firmware/arm_scmi/voltage.c
@@ -242,7 +242,7 @@ static int scmi_voltage_descriptors_get(const struct scmi_protocol_handle *ph,
 			if (SUPPORTS_EXTENDED_NAMES(attributes))
 				ph->hops->extended_name_get(ph,
 							VOLTAGE_DOMAIN_NAME_GET,
-							v->id, v->name,
+							v->id, NULL, v->name,
 							SCMI_MAX_STR_SIZE);
 			if (SUPPORTS_ASYNC_LEVEL_SET(attributes))
 				v->async_level_set = true;