firmware: arm_scmi: Add sensor notifications support (128e3e93) · Commits · 戴 / test

drivers/firmware/arm_scmi/sensors.c

+64 −5

Original line number	Diff line number	Diff line
		@@ -5,7 +5,12 @@
		* Copyright (C) 2018 ARM Ltd.
		*/

		#define pr_fmt(fmt) "SCMI Notifications SENSOR - " fmt

		#include <linux/scmi_protocol.h>

		#include "common.h"
		#include "notify.h"

		enum scmi_sensor_protocol_cmd {
		SENSOR_DESCRIPTION_GET = 0x3,
		@@ -14,10 +19,6 @@ enum scmi_sensor_protocol_cmd {
		SENSOR_READING_GET = 0x6,
		};

		enum scmi_sensor_protocol_notify {
		SENSOR_TRIP_POINT_EVENT = 0x0,
		};

		struct scmi_msg_resp_sensor_attributes {
		__le16 num_sensors;
		u8 max_requests;
		@@ -71,6 +72,12 @@ struct scmi_msg_sensor_reading_get {
		#define SENSOR_READ_ASYNC BIT(0)
		};

		struct scmi_sensor_trip_notify_payld {
		__le32 agent_id;
		__le32 sensor_id;
		__le32 trip_point_desc;
		};

		struct sensors_info {
		u32 version;
		int num_sensors;
		@@ -271,11 +278,57 @@ static int scmi_sensor_count_get(const struct scmi_handle *handle)
		static struct scmi_sensor_ops sensor_ops = {
		.count_get = scmi_sensor_count_get,
		.info_get = scmi_sensor_info_get,
		.trip_point_notify = scmi_sensor_trip_point_notify,
		.trip_point_config = scmi_sensor_trip_point_config,
		.reading_get = scmi_sensor_reading_get,
		};

		static int scmi_sensor_set_notify_enabled(const struct scmi_handle *handle,
		u8 evt_id, u32 src_id, bool enable)
		{
		int ret;

		ret = scmi_sensor_trip_point_notify(handle, src_id, enable);
		if (ret)
		pr_debug("FAIL_ENABLED - evt[%X] dom[%d] - ret:%d\n",
		evt_id, src_id, ret);

		return ret;
		}

		static void scmi_sensor_fill_custom_report(const struct scmi_handle handle,
		u8 evt_id, u64 timestamp,
		const void *payld, size_t payld_sz,
		void report, u32 src_id)
		{
		const struct scmi_sensor_trip_notify_payld *p = payld;
		struct scmi_sensor_trip_point_report *r = report;

		if (evt_id != SCMI_EVENT_SENSOR_TRIP_POINT_EVENT \|\|
		sizeof(*p) != payld_sz)
		return NULL;

		r->timestamp = timestamp;
		r->agent_id = le32_to_cpu(p->agent_id);
		r->sensor_id = le32_to_cpu(p->sensor_id);
		r->trip_point_desc = le32_to_cpu(p->trip_point_desc);
		*src_id = r->sensor_id;

		return r;
		}

		static const struct scmi_event sensor_events[] = {
		{
		.id = SCMI_EVENT_SENSOR_TRIP_POINT_EVENT,
		.max_payld_sz = sizeof(struct scmi_sensor_trip_notify_payld),
		.max_report_sz = sizeof(struct scmi_sensor_trip_point_report),
		},
		};

		static const struct scmi_event_ops sensor_event_ops = {
		.set_notify_enabled = scmi_sensor_set_notify_enabled,
		.fill_custom_report = scmi_sensor_fill_custom_report,
		};

		static int scmi_sensors_protocol_init(struct scmi_handle *handle)
		{
		u32 version;
		@@ -299,6 +352,12 @@ static int scmi_sensors_protocol_init(struct scmi_handle *handle)

		scmi_sensor_description_get(handle, sinfo);

		scmi_register_protocol_events(handle,
		SCMI_PROTOCOL_SENSOR, SCMI_PROTO_QUEUE_SZ,
		&sensor_event_ops, sensor_events,
		ARRAY_SIZE(sensor_events),
		sinfo->num_sensors);

		sinfo->version = version;
		handle->sensor_ops = &sensor_ops;
		handle->sensor_priv = sinfo;

include/linux/scmi_protocol.h

+8 −5

Original line number	Diff line number	Diff line
		@@ -176,18 +176,13 @@ enum scmi_sensor_class {
		*
		* @count_get: get the count of sensors provided by SCMI
		* @info_get: get the information of the specified sensor
		* @trip_point_notify: control notifications on cross-over events for
		* the trip-points
		* @trip_point_config: selects and configures a trip-point of interest
		* @reading_get: gets the current value of the sensor
		*/
		struct scmi_sensor_ops {
		int (count_get)(const struct scmi_handle handle);

		const struct scmi_sensor_info (info_get)
		(const struct scmi_handle *handle, u32 sensor_id);
		int (trip_point_notify)(const struct scmi_handle handle,
		u32 sensor_id, bool enable);
		int (trip_point_config)(const struct scmi_handle handle,
		u32 sensor_id, u8 trip_id, u64 trip_value);
		int (reading_get)(const struct scmi_handle handle, u32 sensor_id,
		@@ -380,6 +375,7 @@ enum scmi_notification_events {
		SCMI_EVENT_POWER_STATE_CHANGED = 0x0,
		SCMI_EVENT_PERFORMANCE_LIMITS_CHANGED = 0x0,
		SCMI_EVENT_PERFORMANCE_LEVEL_CHANGED = 0x1,
		SCMI_EVENT_SENSOR_TRIP_POINT_EVENT = 0x0,
		};

		struct scmi_power_state_changed_report {
		@@ -404,4 +400,11 @@ struct scmi_perf_level_report {
		u32 performance_level;
		};

		struct scmi_sensor_trip_point_report {
		u64 timestamp;
		u32 agent_id;
		u32 sensor_id;
		u32 trip_point_desc;
		};

		#endif /* _LINUX_SCMI_PROTOCOL_H */

Admin message