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Message-Id: <20201119174906.43862-6-cristian.marussi@arm.com>
Date: Thu, 19 Nov 2020 17:49:05 +0000
From: Cristian Marussi <cristian.marussi@....com>
To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc: sudeep.holla@....com, lukasz.luba@....com,
james.quinlan@...adcom.com, Jonathan.Cameron@...wei.com,
egranata@...gle.com, jbhayana@...gle.com,
peter.hilber@...nsynergy.com, mikhail.golubev@...nsynergy.com,
Igor.Skalkin@...nsynergy.com,
Cristian Marussi <cristian.marussi@....com>
Subject: [PATCH v4 5/6] firmware: arm_scmi: add SCMIv3.0 Sensor configuration support
Add SCMIv3.0 Sensor support for CONFIG_GET/CONFIG_SET commands.
Signed-off-by: Cristian Marussi <cristian.marussi@....com>
---
v3 --> v4
- dropped single field structs
---
drivers/firmware/arm_scmi/sensors.c | 63 +++++++++++++++++++++++++++++
include/linux/scmi_protocol.h | 37 +++++++++++++++++
2 files changed, 100 insertions(+)
diff --git a/drivers/firmware/arm_scmi/sensors.c b/drivers/firmware/arm_scmi/sensors.c
index 2239af5f9e6e..10c271d430e7 100644
--- a/drivers/firmware/arm_scmi/sensors.c
+++ b/drivers/firmware/arm_scmi/sensors.c
@@ -23,6 +23,8 @@ enum scmi_sensor_protocol_cmd {
SENSOR_READING_GET = 0x6,
SENSOR_AXIS_DESCRIPTION_GET = 0x7,
SENSOR_LIST_UPDATE_INTERVALS = 0x8,
+ SENSOR_CONFIG_GET = 0x9,
+ SENSOR_CONFIG_SET = 0xA,
};
struct scmi_msg_resp_sensor_attributes {
@@ -149,6 +151,11 @@ struct scmi_msg_set_sensor_trip_point {
__le32 value_high;
};
+struct scmi_msg_sensor_config_set {
+ __le32 id;
+ __le32 sensor_config;
+};
+
struct scmi_msg_sensor_reading_get {
__le32 id;
__le32 flags;
@@ -592,6 +599,60 @@ scmi_sensor_trip_point_config(const struct scmi_handle *handle, u32 sensor_id,
return ret;
}
+static int scmi_sensor_config_get(const struct scmi_handle *handle,
+ u32 sensor_id, u32 *sensor_config)
+{
+ int ret;
+ struct scmi_xfer *t;
+
+ ret = scmi_xfer_get_init(handle, SENSOR_CONFIG_GET,
+ SCMI_PROTOCOL_SENSOR, sizeof(__le32),
+ sizeof(__le32), &t);
+ if (ret)
+ return ret;
+
+ put_unaligned_le32(cpu_to_le32(sensor_id), t->tx.buf);
+ ret = scmi_do_xfer(handle, t);
+ if (!ret) {
+ struct sensors_info *si = handle->sensor_priv;
+ struct scmi_sensor_info *s = si->sensors + sensor_id;
+
+ *sensor_config = get_unaligned_le64(t->rx.buf);
+ s->sensor_config = *sensor_config;
+ }
+
+ scmi_xfer_put(handle, t);
+ return ret;
+}
+
+static int scmi_sensor_config_set(const struct scmi_handle *handle,
+ u32 sensor_id, u32 sensor_config)
+{
+ int ret;
+ struct scmi_xfer *t;
+ struct scmi_msg_sensor_config_set *msg;
+
+ ret = scmi_xfer_get_init(handle, SENSOR_CONFIG_SET,
+ SCMI_PROTOCOL_SENSOR, sizeof(*msg), 0, &t);
+ if (ret)
+ return ret;
+
+ msg = t->tx.buf;
+ msg->id = cpu_to_le32(sensor_id);
+ msg->sensor_config = cpu_to_le32(sensor_config);
+
+ ret = scmi_do_xfer(handle, t);
+ if (!ret) {
+ struct sensors_info *si = handle->sensor_priv;
+ struct scmi_sensor_info *s = si->sensors + sensor_id;
+
+ s->sensor_config = sensor_config;
+ }
+
+ scmi_xfer_put(handle, t);
+ return ret;
+}
+
/**
* scmi_sensor_reading_get - Read scalar sensor value
* @handle: Platform handle
@@ -745,6 +806,8 @@ static const struct scmi_sensor_ops sensor_ops = {
.trip_point_config = scmi_sensor_trip_point_config,
.reading_get = scmi_sensor_reading_get,
.reading_get_timestamped = scmi_sensor_reading_get_timestamped,
+ .config_get = scmi_sensor_config_get,
+ .config_set = scmi_sensor_config_set,
};
static int scmi_sensor_set_notify_enabled(const struct scmi_handle *handle,
diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h
index 0c52bf0cbee4..7e9e2cd3d46b 100644
--- a/include/linux/scmi_protocol.h
+++ b/include/linux/scmi_protocol.h
@@ -286,7 +286,38 @@ struct scmi_sensor_info {
unsigned int num_axis;
struct scmi_sensor_axis_info *axis;
struct scmi_sensor_intervals_info intervals;
+ unsigned int sensor_config;
+#define SCMI_SENS_CFG_UPDATE_SECS_MASK GENMASK(31, 16)
+#define SCMI_SENS_CFG_GET_UPDATE_SECS(x) \
+ FIELD_GET(SCMI_SENS_CFG_UPDATE_SECS_MASK, (x))
+
+#define SCMI_SENS_CFG_UPDATE_EXP_MASK GENMASK(15, 11)
+#define SCMI_SENS_CFG_GET_UPDATE_EXP(x) \
+ ({ \
+ int __signed_exp = \
+ FIELD_GET(SCMI_SENS_CFG_UPDATE_EXP_MASK, (x)); \
+ \
+ if (__signed_exp & BIT(4)) \
+ __signed_exp |= GENMASK(31, 5); \
+ __signed_exp; \
+ })
+
+#define SCMI_SENS_CFG_ROUND_MASK GENMASK(10, 9)
+#define SCMI_SENS_CFG_ROUND_AUTO 2
+#define SCMI_SENS_CFG_ROUND_UP 1
+#define SCMI_SENS_CFG_ROUND_DOWN 0
+
+#define SCMI_SENS_CFG_TSTAMP_ENABLED_MASK BIT(1)
+#define SCMI_SENS_CFG_TSTAMP_ENABLE 1
+#define SCMI_SENS_CFG_TSTAMP_DISABLE 0
+#define SCMI_SENS_CFG_IS_TSTAMP_ENABLED(x) \
+ FIELD_GET(SCMI_SENS_CFG_TSTAMP_ENABLED_MASK, (x))
+
+#define SCMI_SENS_CFG_SENSOR_ENABLED_MASK BIT(0)
+#define SCMI_SENS_CFG_SENSOR_ENABLE 1
+#define SCMI_SENS_CFG_SENSOR_DISABLE 0
char name[SCMI_MAX_STR_SIZE];
+#define SCMI_SENS_CFG_IS_ENABLED(x) FIELD_GET(BIT(0), (x))
bool extended_scalar_attrs;
unsigned int sensor_power;
unsigned int resolution;
@@ -409,6 +440,8 @@ enum scmi_sensor_class {
* Supports multi-axis sensors for sensors which
* supports it and if the @reading array size of
* @count entry equals the sensor num_axis
+ * @config_get: Get sensor current configuration
+ * @config_set: Set sensor current configuration
*/
struct scmi_sensor_ops {
int (*count_get)(const struct scmi_handle *handle);
@@ -421,6 +454,10 @@ struct scmi_sensor_ops {
int (*reading_get_timestamped)(const struct scmi_handle *handle,
u32 sensor_id, u8 count,
struct scmi_sensor_reading *readings);
+ int (*config_get)(const struct scmi_handle *handle,
+ u32 sensor_id, u32 *sensor_config);
+ int (*config_set)(const struct scmi_handle *handle,
+ u32 sensor_id, u32 sensor_config);
};
/**
--
2.17.1
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