openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

firmware: arm_scmi: Add sensor notifications support 

Make SCMI sensor protocol register with the notification core.

Link: https://lore.kernel.org/r/20200701155348.52864-8-cristian.marussi@arm.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Cristian Marussi 2020-07-01 16:53:46 +01:00 committed by Sudeep Holla
parent fb5086dc47
commit 128e3e9311
2 changed files with 72 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

69
drivers/firmware/arm_scmi/sensors.c
View File

@ -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;

13
include/linux/scmi_protocol.h
View File

@ -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 */