From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/drivers/firmware/arm_scmi/sensors.c | 857 +++++++++++++++++++++++++++++++++++++++++++++++++++-----
1 files changed, 777 insertions(+), 80 deletions(-)
diff --git a/kernel/drivers/firmware/arm_scmi/sensors.c b/kernel/drivers/firmware/arm_scmi/sensors.c
index add3833..d426b84 100644
--- a/kernel/drivers/firmware/arm_scmi/sensors.c
+++ b/kernel/drivers/firmware/arm_scmi/sensors.c
@@ -2,16 +2,31 @@
/*
* System Control and Management Interface (SCMI) Sensor Protocol
*
- * Copyright (C) 2018 ARM Ltd.
+ * Copyright (C) 2018-2020 ARM Ltd.
*/
+#define pr_fmt(fmt) "SCMI Notifications SENSOR - " fmt
+
+#include <linux/bitfield.h>
+#include <linux/module.h>
+#include <linux/scmi_protocol.h>
+
#include "common.h"
+#include "notify.h"
+
+#define SCMI_MAX_NUM_SENSOR_AXIS 63
+#define SCMIv2_SENSOR_PROTOCOL 0x10000
enum scmi_sensor_protocol_cmd {
SENSOR_DESCRIPTION_GET = 0x3,
SENSOR_TRIP_POINT_NOTIFY = 0x4,
SENSOR_TRIP_POINT_CONFIG = 0x5,
SENSOR_READING_GET = 0x6,
+ SENSOR_AXIS_DESCRIPTION_GET = 0x7,
+ SENSOR_LIST_UPDATE_INTERVALS = 0x8,
+ SENSOR_CONFIG_GET = 0x9,
+ SENSOR_CONFIG_SET = 0xA,
+ SENSOR_CONTINUOUS_UPDATE_NOTIFY = 0xB,
};
struct scmi_msg_resp_sensor_attributes {
@@ -23,29 +38,106 @@
__le32 reg_size;
};
+/* v3 attributes_low macros */
+#define SUPPORTS_UPDATE_NOTIFY(x) FIELD_GET(BIT(30), (x))
+#define SENSOR_TSTAMP_EXP(x) FIELD_GET(GENMASK(14, 10), (x))
+#define SUPPORTS_TIMESTAMP(x) FIELD_GET(BIT(9), (x))
+#define SUPPORTS_EXTEND_ATTRS(x) FIELD_GET(BIT(8), (x))
+
+/* v2 attributes_high macros */
+#define SENSOR_UPDATE_BASE(x) FIELD_GET(GENMASK(31, 27), (x))
+#define SENSOR_UPDATE_SCALE(x) FIELD_GET(GENMASK(26, 22), (x))
+
+/* v3 attributes_high macros */
+#define SENSOR_AXIS_NUMBER(x) FIELD_GET(GENMASK(21, 16), (x))
+#define SUPPORTS_AXIS(x) FIELD_GET(BIT(8), (x))
+
+/* v3 resolution macros */
+#define SENSOR_RES(x) FIELD_GET(GENMASK(26, 0), (x))
+#define SENSOR_RES_EXP(x) FIELD_GET(GENMASK(31, 27), (x))
+
+struct scmi_msg_resp_attrs {
+ __le32 min_range_low;
+ __le32 min_range_high;
+ __le32 max_range_low;
+ __le32 max_range_high;
+};
+
struct scmi_msg_resp_sensor_description {
__le16 num_returned;
__le16 num_remaining;
- struct {
+ struct scmi_sensor_descriptor {
__le32 id;
__le32 attributes_low;
-#define SUPPORTS_ASYNC_READ(x) ((x) & BIT(31))
-#define NUM_TRIP_POINTS(x) ((x) & 0xff)
+/* Common attributes_low macros */
+#define SUPPORTS_ASYNC_READ(x) FIELD_GET(BIT(31), (x))
+#define NUM_TRIP_POINTS(x) FIELD_GET(GENMASK(7, 0), (x))
__le32 attributes_high;
-#define SENSOR_TYPE(x) ((x) & 0xff)
-#define SENSOR_SCALE(x) (((x) >> 11) & 0x1f)
-#define SENSOR_SCALE_SIGN BIT(4)
-#define SENSOR_SCALE_EXTEND GENMASK(7, 5)
-#define SENSOR_UPDATE_SCALE(x) (((x) >> 22) & 0x1f)
-#define SENSOR_UPDATE_BASE(x) (((x) >> 27) & 0x1f)
- u8 name[SCMI_MAX_STR_SIZE];
- } desc[0];
+/* Common attributes_high macros */
+#define SENSOR_SCALE(x) FIELD_GET(GENMASK(15, 11), (x))
+#define SENSOR_SCALE_SIGN BIT(4)
+#define SENSOR_SCALE_EXTEND GENMASK(31, 5)
+#define SENSOR_TYPE(x) FIELD_GET(GENMASK(7, 0), (x))
+ u8 name[SCMI_MAX_STR_SIZE];
+ /* only for version > 2.0 */
+ __le32 power;
+ __le32 resolution;
+ struct scmi_msg_resp_attrs scalar_attrs;
+ } desc[];
};
-struct scmi_msg_sensor_trip_point_notify {
+/* Base scmi_sensor_descriptor size excluding extended attrs after name */
+#define SCMI_MSG_RESP_SENS_DESCR_BASE_SZ 28
+
+/* Sign extend to a full s32 */
+#define S32_EXT(v) \
+ ({ \
+ int __v = (v); \
+ \
+ if (__v & SENSOR_SCALE_SIGN) \
+ __v |= SENSOR_SCALE_EXTEND; \
+ __v; \
+ })
+
+struct scmi_msg_sensor_axis_description_get {
+ __le32 id;
+ __le32 axis_desc_index;
+};
+
+struct scmi_msg_resp_sensor_axis_description {
+ __le32 num_axis_flags;
+#define NUM_AXIS_RETURNED(x) FIELD_GET(GENMASK(5, 0), (x))
+#define NUM_AXIS_REMAINING(x) FIELD_GET(GENMASK(31, 26), (x))
+ struct scmi_axis_descriptor {
+ __le32 id;
+ __le32 attributes_low;
+ __le32 attributes_high;
+ u8 name[SCMI_MAX_STR_SIZE];
+ __le32 resolution;
+ struct scmi_msg_resp_attrs attrs;
+ } desc[];
+};
+
+/* Base scmi_axis_descriptor size excluding extended attrs after name */
+#define SCMI_MSG_RESP_AXIS_DESCR_BASE_SZ 28
+
+struct scmi_msg_sensor_list_update_intervals {
+ __le32 id;
+ __le32 index;
+};
+
+struct scmi_msg_resp_sensor_list_update_intervals {
+ __le32 num_intervals_flags;
+#define NUM_INTERVALS_RETURNED(x) FIELD_GET(GENMASK(11, 0), (x))
+#define SEGMENTED_INTVL_FORMAT(x) FIELD_GET(BIT(12), (x))
+#define NUM_INTERVALS_REMAINING(x) FIELD_GET(GENMASK(31, 16), (x))
+ __le32 intervals[];
+};
+
+struct scmi_msg_sensor_request_notify {
__le32 id;
__le32 event_control;
-#define SENSOR_TP_NOTIFY_ALL BIT(0)
+#define SENSOR_NOTIFY_ALL BIT(0)
};
struct scmi_msg_set_sensor_trip_point {
@@ -61,10 +153,45 @@
__le32 value_high;
};
+struct scmi_msg_sensor_config_set {
+ __le32 id;
+ __le32 sensor_config;
+};
+
struct scmi_msg_sensor_reading_get {
__le32 id;
__le32 flags;
#define SENSOR_READ_ASYNC BIT(0)
+};
+
+struct scmi_resp_sensor_reading_complete {
+ __le32 id;
+ __le32 readings_low;
+ __le32 readings_high;
+};
+
+struct scmi_sensor_reading_resp {
+ __le32 sensor_value_low;
+ __le32 sensor_value_high;
+ __le32 timestamp_low;
+ __le32 timestamp_high;
+};
+
+struct scmi_resp_sensor_reading_complete_v3 {
+ __le32 id;
+ struct scmi_sensor_reading_resp readings[];
+};
+
+struct scmi_sensor_trip_notify_payld {
+ __le32 agent_id;
+ __le32 sensor_id;
+ __le32 trip_point_desc;
+};
+
+struct scmi_sensor_update_notify_payld {
+ __le32 agent_id;
+ __le32 sensor_id;
+ struct scmi_sensor_reading_resp readings[];
};
struct sensors_info {
@@ -76,21 +203,21 @@
struct scmi_sensor_info *sensors;
};
-static int scmi_sensor_attributes_get(const struct scmi_handle *handle,
+static int scmi_sensor_attributes_get(const struct scmi_protocol_handle *ph,
struct sensors_info *si)
{
int ret;
struct scmi_xfer *t;
struct scmi_msg_resp_sensor_attributes *attr;
- ret = scmi_xfer_get_init(handle, PROTOCOL_ATTRIBUTES,
- SCMI_PROTOCOL_SENSOR, 0, sizeof(*attr), &t);
+ ret = ph->xops->xfer_get_init(ph, PROTOCOL_ATTRIBUTES,
+ 0, sizeof(*attr), &t);
if (ret)
return ret;
attr = t->rx.buf;
- ret = scmi_do_xfer(handle, t);
+ ret = ph->xops->do_xfer(ph, t);
if (!ret) {
si->num_sensors = le16_to_cpu(attr->num_sensors);
si->max_requests = attr->max_requests;
@@ -99,11 +226,199 @@
si->reg_size = le32_to_cpu(attr->reg_size);
}
- scmi_xfer_put(handle, t);
+ ph->xops->xfer_put(ph, t);
return ret;
}
-static int scmi_sensor_description_get(const struct scmi_handle *handle,
+static inline void scmi_parse_range_attrs(struct scmi_range_attrs *out,
+ struct scmi_msg_resp_attrs *in)
+{
+ out->min_range = get_unaligned_le64((void *)&in->min_range_low);
+ out->max_range = get_unaligned_le64((void *)&in->max_range_low);
+}
+
+static int scmi_sensor_update_intervals(const struct scmi_protocol_handle *ph,
+ struct scmi_sensor_info *s)
+{
+ int ret, cnt;
+ u32 desc_index = 0;
+ u16 num_returned, num_remaining;
+ struct scmi_xfer *ti;
+ struct scmi_msg_resp_sensor_list_update_intervals *buf;
+ struct scmi_msg_sensor_list_update_intervals *msg;
+
+ ret = ph->xops->xfer_get_init(ph, SENSOR_LIST_UPDATE_INTERVALS,
+ sizeof(*msg), 0, &ti);
+ if (ret)
+ return ret;
+
+ buf = ti->rx.buf;
+ do {
+ u32 flags;
+
+ msg = ti->tx.buf;
+ /* Set the number of sensors to be skipped/already read */
+ msg->id = cpu_to_le32(s->id);
+ msg->index = cpu_to_le32(desc_index);
+
+ ret = ph->xops->do_xfer(ph, ti);
+ if (ret)
+ break;
+
+ flags = le32_to_cpu(buf->num_intervals_flags);
+ num_returned = NUM_INTERVALS_RETURNED(flags);
+ num_remaining = NUM_INTERVALS_REMAINING(flags);
+
+ /*
+ * Max intervals is not declared previously anywhere so we
+ * assume it's returned+remaining.
+ */
+ if (!s->intervals.count) {
+ s->intervals.segmented = SEGMENTED_INTVL_FORMAT(flags);
+ s->intervals.count = num_returned + num_remaining;
+ /* segmented intervals are reported in one triplet */
+ if (s->intervals.segmented &&
+ (num_remaining || num_returned != 3)) {
+ dev_err(ph->dev,
+ "Sensor ID:%d advertises an invalid segmented interval (%d)\n",
+ s->id, s->intervals.count);
+ s->intervals.segmented = false;
+ s->intervals.count = 0;
+ ret = -EINVAL;
+ break;
+ }
+ /* Direct allocation when exceeding pre-allocated */
+ if (s->intervals.count >= SCMI_MAX_PREALLOC_POOL) {
+ s->intervals.desc =
+ devm_kcalloc(ph->dev,
+ s->intervals.count,
+ sizeof(*s->intervals.desc),
+ GFP_KERNEL);
+ if (!s->intervals.desc) {
+ s->intervals.segmented = false;
+ s->intervals.count = 0;
+ ret = -ENOMEM;
+ break;
+ }
+ }
+ } else if (desc_index + num_returned > s->intervals.count) {
+ dev_err(ph->dev,
+ "No. of update intervals can't exceed %d\n",
+ s->intervals.count);
+ ret = -EINVAL;
+ break;
+ }
+
+ for (cnt = 0; cnt < num_returned; cnt++)
+ s->intervals.desc[desc_index + cnt] =
+ le32_to_cpu(buf->intervals[cnt]);
+
+ desc_index += num_returned;
+
+ ph->xops->reset_rx_to_maxsz(ph, ti);
+ /*
+ * check for both returned and remaining to avoid infinite
+ * loop due to buggy firmware
+ */
+ } while (num_returned && num_remaining);
+
+ ph->xops->xfer_put(ph, ti);
+ return ret;
+}
+
+static int scmi_sensor_axis_description(const struct scmi_protocol_handle *ph,
+ struct scmi_sensor_info *s)
+{
+ int ret, cnt;
+ u32 desc_index = 0;
+ u16 num_returned, num_remaining;
+ struct scmi_xfer *te;
+ struct scmi_msg_resp_sensor_axis_description *buf;
+ struct scmi_msg_sensor_axis_description_get *msg;
+
+ s->axis = devm_kcalloc(ph->dev, s->num_axis,
+ sizeof(*s->axis), GFP_KERNEL);
+ if (!s->axis)
+ return -ENOMEM;
+
+ ret = ph->xops->xfer_get_init(ph, SENSOR_AXIS_DESCRIPTION_GET,
+ sizeof(*msg), 0, &te);
+ if (ret)
+ return ret;
+
+ buf = te->rx.buf;
+ do {
+ u32 flags;
+ struct scmi_axis_descriptor *adesc;
+
+ msg = te->tx.buf;
+ /* Set the number of sensors to be skipped/already read */
+ msg->id = cpu_to_le32(s->id);
+ msg->axis_desc_index = cpu_to_le32(desc_index);
+
+ ret = ph->xops->do_xfer(ph, te);
+ if (ret)
+ break;
+
+ flags = le32_to_cpu(buf->num_axis_flags);
+ num_returned = NUM_AXIS_RETURNED(flags);
+ num_remaining = NUM_AXIS_REMAINING(flags);
+
+ if (desc_index + num_returned > s->num_axis) {
+ dev_err(ph->dev, "No. of axis can't exceed %d\n",
+ s->num_axis);
+ break;
+ }
+
+ adesc = &buf->desc[0];
+ for (cnt = 0; cnt < num_returned; cnt++) {
+ u32 attrh, attrl;
+ struct scmi_sensor_axis_info *a;
+ size_t dsize = SCMI_MSG_RESP_AXIS_DESCR_BASE_SZ;
+
+ attrl = le32_to_cpu(adesc->attributes_low);
+
+ a = &s->axis[desc_index + cnt];
+
+ a->id = le32_to_cpu(adesc->id);
+ a->extended_attrs = SUPPORTS_EXTEND_ATTRS(attrl);
+
+ attrh = le32_to_cpu(adesc->attributes_high);
+ a->scale = S32_EXT(SENSOR_SCALE(attrh));
+ a->type = SENSOR_TYPE(attrh);
+ strlcpy(a->name, adesc->name, SCMI_MAX_STR_SIZE);
+
+ if (a->extended_attrs) {
+ unsigned int ares =
+ le32_to_cpu(adesc->resolution);
+
+ a->resolution = SENSOR_RES(ares);
+ a->exponent =
+ S32_EXT(SENSOR_RES_EXP(ares));
+ dsize += sizeof(adesc->resolution);
+
+ scmi_parse_range_attrs(&a->attrs,
+ &adesc->attrs);
+ dsize += sizeof(adesc->attrs);
+ }
+
+ adesc = (typeof(adesc))((u8 *)adesc + dsize);
+ }
+
+ desc_index += num_returned;
+
+ ph->xops->reset_rx_to_maxsz(ph, te);
+ /*
+ * check for both returned and remaining to avoid infinite
+ * loop due to buggy firmware
+ */
+ } while (num_returned && num_remaining);
+
+ ph->xops->xfer_put(ph, te);
+ return ret;
+}
+
+static int scmi_sensor_description_get(const struct scmi_protocol_handle *ph,
struct sensors_info *si)
{
int ret, cnt;
@@ -112,18 +427,20 @@
struct scmi_xfer *t;
struct scmi_msg_resp_sensor_description *buf;
- ret = scmi_xfer_get_init(handle, SENSOR_DESCRIPTION_GET,
- SCMI_PROTOCOL_SENSOR, sizeof(__le32), 0, &t);
+ ret = ph->xops->xfer_get_init(ph, SENSOR_DESCRIPTION_GET,
+ sizeof(__le32), 0, &t);
if (ret)
return ret;
buf = t->rx.buf;
do {
+ struct scmi_sensor_descriptor *sdesc;
+
/* Set the number of sensors to be skipped/already read */
put_unaligned_le32(desc_index, t->tx.buf);
- ret = scmi_do_xfer(handle, t);
+ ret = ph->xops->do_xfer(ph, t);
if (ret)
break;
@@ -131,50 +448,128 @@
num_remaining = le16_to_cpu(buf->num_remaining);
if (desc_index + num_returned > si->num_sensors) {
- dev_err(handle->dev, "No. of sensors can't exceed %d",
+ dev_err(ph->dev, "No. of sensors can't exceed %d",
si->num_sensors);
break;
}
+ sdesc = &buf->desc[0];
for (cnt = 0; cnt < num_returned; cnt++) {
u32 attrh, attrl;
struct scmi_sensor_info *s;
+ size_t dsize = SCMI_MSG_RESP_SENS_DESCR_BASE_SZ;
- attrl = le32_to_cpu(buf->desc[cnt].attributes_low);
- attrh = le32_to_cpu(buf->desc[cnt].attributes_high);
s = &si->sensors[desc_index + cnt];
- s->id = le32_to_cpu(buf->desc[cnt].id);
- s->type = SENSOR_TYPE(attrh);
- s->scale = SENSOR_SCALE(attrh);
- /* Sign extend to a full s8 */
- if (s->scale & SENSOR_SCALE_SIGN)
- s->scale |= SENSOR_SCALE_EXTEND;
+ s->id = le32_to_cpu(sdesc->id);
+
+ attrl = le32_to_cpu(sdesc->attributes_low);
+ /* common bitfields parsing */
s->async = SUPPORTS_ASYNC_READ(attrl);
s->num_trip_points = NUM_TRIP_POINTS(attrl);
- strlcpy(s->name, buf->desc[cnt].name, SCMI_MAX_STR_SIZE);
+ /**
+ * only SCMIv3.0 specific bitfield below.
+ * Such bitfields are assumed to be zeroed on non
+ * relevant fw versions...assuming fw not buggy !
+ */
+ s->update = SUPPORTS_UPDATE_NOTIFY(attrl);
+ s->timestamped = SUPPORTS_TIMESTAMP(attrl);
+ if (s->timestamped)
+ s->tstamp_scale =
+ S32_EXT(SENSOR_TSTAMP_EXP(attrl));
+ s->extended_scalar_attrs =
+ SUPPORTS_EXTEND_ATTRS(attrl);
+
+ attrh = le32_to_cpu(sdesc->attributes_high);
+ /* common bitfields parsing */
+ s->scale = S32_EXT(SENSOR_SCALE(attrh));
+ s->type = SENSOR_TYPE(attrh);
+ /* Use pre-allocated pool wherever possible */
+ s->intervals.desc = s->intervals.prealloc_pool;
+ if (si->version == SCMIv2_SENSOR_PROTOCOL) {
+ s->intervals.segmented = false;
+ s->intervals.count = 1;
+ /*
+ * Convert SCMIv2.0 update interval format to
+ * SCMIv3.0 to be used as the common exposed
+ * descriptor, accessible via common macros.
+ */
+ s->intervals.desc[0] =
+ (SENSOR_UPDATE_BASE(attrh) << 5) |
+ SENSOR_UPDATE_SCALE(attrh);
+ } else {
+ /*
+ * From SCMIv3.0 update intervals are retrieved
+ * via a dedicated (optional) command.
+ * Since the command is optional, on error carry
+ * on without any update interval.
+ */
+ if (scmi_sensor_update_intervals(ph, s))
+ dev_dbg(ph->dev,
+ "Update Intervals not available for sensor ID:%d\n",
+ s->id);
+ }
+ /**
+ * only > SCMIv2.0 specific bitfield below.
+ * Such bitfields are assumed to be zeroed on non
+ * relevant fw versions...assuming fw not buggy !
+ */
+ s->num_axis = min_t(unsigned int,
+ SUPPORTS_AXIS(attrh) ?
+ SENSOR_AXIS_NUMBER(attrh) : 0,
+ SCMI_MAX_NUM_SENSOR_AXIS);
+ strlcpy(s->name, sdesc->name, SCMI_MAX_STR_SIZE);
+
+ if (s->extended_scalar_attrs) {
+ s->sensor_power = le32_to_cpu(sdesc->power);
+ dsize += sizeof(sdesc->power);
+ /* Only for sensors reporting scalar values */
+ if (s->num_axis == 0) {
+ unsigned int sres =
+ le32_to_cpu(sdesc->resolution);
+
+ s->resolution = SENSOR_RES(sres);
+ s->exponent =
+ S32_EXT(SENSOR_RES_EXP(sres));
+ dsize += sizeof(sdesc->resolution);
+
+ scmi_parse_range_attrs(&s->scalar_attrs,
+ &sdesc->scalar_attrs);
+ dsize += sizeof(sdesc->scalar_attrs);
+ }
+ }
+ if (s->num_axis > 0) {
+ ret = scmi_sensor_axis_description(ph, s);
+ if (ret)
+ goto out;
+ }
+
+ sdesc = (typeof(sdesc))((u8 *)sdesc + dsize);
}
desc_index += num_returned;
+
+ ph->xops->reset_rx_to_maxsz(ph, t);
/*
* check for both returned and remaining to avoid infinite
* loop due to buggy firmware
*/
} while (num_returned && num_remaining);
- scmi_xfer_put(handle, t);
+out:
+ ph->xops->xfer_put(ph, t);
return ret;
}
-static int scmi_sensor_trip_point_notify(const struct scmi_handle *handle,
- u32 sensor_id, bool enable)
+static inline int
+scmi_sensor_request_notify(const struct scmi_protocol_handle *ph, u32 sensor_id,
+ u8 message_id, bool enable)
{
int ret;
- u32 evt_cntl = enable ? SENSOR_TP_NOTIFY_ALL : 0;
+ u32 evt_cntl = enable ? SENSOR_NOTIFY_ALL : 0;
struct scmi_xfer *t;
- struct scmi_msg_sensor_trip_point_notify *cfg;
+ struct scmi_msg_sensor_request_notify *cfg;
- ret = scmi_xfer_get_init(handle, SENSOR_TRIP_POINT_NOTIFY,
- SCMI_PROTOCOL_SENSOR, sizeof(*cfg), 0, &t);
+ ret = ph->xops->xfer_get_init(ph, message_id, sizeof(*cfg), 0, &t);
if (ret)
return ret;
@@ -182,23 +577,40 @@
cfg->id = cpu_to_le32(sensor_id);
cfg->event_control = cpu_to_le32(evt_cntl);
- ret = scmi_do_xfer(handle, t);
+ ret = ph->xops->do_xfer(ph, t);
- scmi_xfer_put(handle, t);
+ ph->xops->xfer_put(ph, t);
return ret;
}
+static int scmi_sensor_trip_point_notify(const struct scmi_protocol_handle *ph,
+ u32 sensor_id, bool enable)
+{
+ return scmi_sensor_request_notify(ph, sensor_id,
+ SENSOR_TRIP_POINT_NOTIFY,
+ enable);
+}
+
static int
-scmi_sensor_trip_point_config(const struct scmi_handle *handle, u32 sensor_id,
- u8 trip_id, u64 trip_value)
+scmi_sensor_continuous_update_notify(const struct scmi_protocol_handle *ph,
+ u32 sensor_id, bool enable)
+{
+ return scmi_sensor_request_notify(ph, sensor_id,
+ SENSOR_CONTINUOUS_UPDATE_NOTIFY,
+ enable);
+}
+
+static int
+scmi_sensor_trip_point_config(const struct scmi_protocol_handle *ph,
+ u32 sensor_id, u8 trip_id, u64 trip_value)
{
int ret;
u32 evt_cntl = SENSOR_TP_BOTH;
struct scmi_xfer *t;
struct scmi_msg_set_sensor_trip_point *trip;
- ret = scmi_xfer_get_init(handle, SENSOR_TRIP_POINT_CONFIG,
- SCMI_PROTOCOL_SENSOR, sizeof(*trip), 0, &t);
+ ret = ph->xops->xfer_get_init(ph, SENSOR_TRIP_POINT_CONFIG,
+ sizeof(*trip), 0, &t);
if (ret)
return ret;
@@ -208,98 +620,383 @@
trip->value_low = cpu_to_le32(trip_value & 0xffffffff);
trip->value_high = cpu_to_le32(trip_value >> 32);
- ret = scmi_do_xfer(handle, t);
+ ret = ph->xops->do_xfer(ph, t);
- scmi_xfer_put(handle, t);
+ ph->xops->xfer_put(ph, t);
return ret;
}
-static int scmi_sensor_reading_get(const struct scmi_handle *handle,
+static int scmi_sensor_config_get(const struct scmi_protocol_handle *ph,
+ u32 sensor_id, u32 *sensor_config)
+{
+ int ret;
+ struct scmi_xfer *t;
+
+ ret = ph->xops->xfer_get_init(ph, SENSOR_CONFIG_GET,
+ sizeof(__le32), sizeof(__le32), &t);
+ if (ret)
+ return ret;
+
+ put_unaligned_le32(sensor_id, t->tx.buf);
+ ret = ph->xops->do_xfer(ph, t);
+ if (!ret) {
+ struct sensors_info *si = ph->get_priv(ph);
+ struct scmi_sensor_info *s = si->sensors + sensor_id;
+
+ *sensor_config = get_unaligned_le64(t->rx.buf);
+ s->sensor_config = *sensor_config;
+ }
+
+ ph->xops->xfer_put(ph, t);
+ return ret;
+}
+
+static int scmi_sensor_config_set(const struct scmi_protocol_handle *ph,
+ u32 sensor_id, u32 sensor_config)
+{
+ int ret;
+ struct scmi_xfer *t;
+ struct scmi_msg_sensor_config_set *msg;
+
+ ret = ph->xops->xfer_get_init(ph, SENSOR_CONFIG_SET,
+ 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 = ph->xops->do_xfer(ph, t);
+ if (!ret) {
+ struct sensors_info *si = ph->get_priv(ph);
+ struct scmi_sensor_info *s = si->sensors + sensor_id;
+
+ s->sensor_config = sensor_config;
+ }
+
+ ph->xops->xfer_put(ph, t);
+ return ret;
+}
+
+/**
+ * scmi_sensor_reading_get - Read scalar sensor value
+ * @ph: Protocol handle
+ * @sensor_id: Sensor ID
+ * @value: The 64bit value sensor reading
+ *
+ * This function returns a single 64 bit reading value representing the sensor
+ * value; if the platform SCMI Protocol implementation and the sensor support
+ * multiple axis and timestamped-reads, this just returns the first axis while
+ * dropping the timestamp value.
+ * Use instead the @scmi_sensor_reading_get_timestamped to retrieve the array of
+ * timestamped multi-axis values.
+ *
+ * Return: 0 on Success
+ */
+static int scmi_sensor_reading_get(const struct scmi_protocol_handle *ph,
u32 sensor_id, u64 *value)
{
int ret;
struct scmi_xfer *t;
struct scmi_msg_sensor_reading_get *sensor;
- struct sensors_info *si = handle->sensor_priv;
+ struct sensors_info *si = ph->get_priv(ph);
struct scmi_sensor_info *s = si->sensors + sensor_id;
- ret = scmi_xfer_get_init(handle, SENSOR_READING_GET,
- SCMI_PROTOCOL_SENSOR, sizeof(*sensor),
- sizeof(u64), &t);
+ ret = ph->xops->xfer_get_init(ph, SENSOR_READING_GET,
+ sizeof(*sensor), 0, &t);
if (ret)
return ret;
sensor = t->tx.buf;
sensor->id = cpu_to_le32(sensor_id);
-
if (s->async) {
sensor->flags = cpu_to_le32(SENSOR_READ_ASYNC);
- ret = scmi_do_xfer_with_response(handle, t);
- if (!ret)
- *value = get_unaligned_le64((void *)
- ((__le32 *)t->rx.buf + 1));
+ ret = ph->xops->do_xfer_with_response(ph, t);
+ if (!ret) {
+ struct scmi_resp_sensor_reading_complete *resp;
+
+ resp = t->rx.buf;
+ if (le32_to_cpu(resp->id) == sensor_id)
+ *value =
+ get_unaligned_le64(&resp->readings_low);
+ else
+ ret = -EPROTO;
+ }
} else {
sensor->flags = cpu_to_le32(0);
- ret = scmi_do_xfer(handle, t);
+ ret = ph->xops->do_xfer(ph, t);
if (!ret)
*value = get_unaligned_le64(t->rx.buf);
}
- scmi_xfer_put(handle, t);
+ ph->xops->xfer_put(ph, t);
+ return ret;
+}
+
+static inline void
+scmi_parse_sensor_readings(struct scmi_sensor_reading *out,
+ const struct scmi_sensor_reading_resp *in)
+{
+ out->value = get_unaligned_le64((void *)&in->sensor_value_low);
+ out->timestamp = get_unaligned_le64((void *)&in->timestamp_low);
+}
+
+/**
+ * scmi_sensor_reading_get_timestamped - Read multiple-axis timestamped values
+ * @ph: Protocol handle
+ * @sensor_id: Sensor ID
+ * @count: The length of the provided @readings array
+ * @readings: An array of elements each representing a timestamped per-axis
+ * reading of type @struct scmi_sensor_reading.
+ * Returned readings are ordered as the @axis descriptors array
+ * included in @struct scmi_sensor_info and the max number of
+ * returned elements is min(@count, @num_axis); ideally the provided
+ * array should be of length @count equal to @num_axis.
+ *
+ * Return: 0 on Success
+ */
+static int
+scmi_sensor_reading_get_timestamped(const struct scmi_protocol_handle *ph,
+ u32 sensor_id, u8 count,
+ struct scmi_sensor_reading *readings)
+{
+ int ret;
+ struct scmi_xfer *t;
+ struct scmi_msg_sensor_reading_get *sensor;
+ struct sensors_info *si = ph->get_priv(ph);
+ struct scmi_sensor_info *s = si->sensors + sensor_id;
+
+ if (!count || !readings ||
+ (!s->num_axis && count > 1) || (s->num_axis && count > s->num_axis))
+ return -EINVAL;
+
+ ret = ph->xops->xfer_get_init(ph, SENSOR_READING_GET,
+ sizeof(*sensor), 0, &t);
+ if (ret)
+ return ret;
+
+ sensor = t->tx.buf;
+ sensor->id = cpu_to_le32(sensor_id);
+ if (s->async) {
+ sensor->flags = cpu_to_le32(SENSOR_READ_ASYNC);
+ ret = ph->xops->do_xfer_with_response(ph, t);
+ if (!ret) {
+ int i;
+ struct scmi_resp_sensor_reading_complete_v3 *resp;
+
+ resp = t->rx.buf;
+ /* Retrieve only the number of requested axis anyway */
+ if (le32_to_cpu(resp->id) == sensor_id)
+ for (i = 0; i < count; i++)
+ scmi_parse_sensor_readings(&readings[i],
+ &resp->readings[i]);
+ else
+ ret = -EPROTO;
+ }
+ } else {
+ sensor->flags = cpu_to_le32(0);
+ ret = ph->xops->do_xfer(ph, t);
+ if (!ret) {
+ int i;
+ struct scmi_sensor_reading_resp *resp_readings;
+
+ resp_readings = t->rx.buf;
+ for (i = 0; i < count; i++)
+ scmi_parse_sensor_readings(&readings[i],
+ &resp_readings[i]);
+ }
+ }
+
+ ph->xops->xfer_put(ph, t);
return ret;
}
static const struct scmi_sensor_info *
-scmi_sensor_info_get(const struct scmi_handle *handle, u32 sensor_id)
+scmi_sensor_info_get(const struct scmi_protocol_handle *ph, u32 sensor_id)
{
- struct sensors_info *si = handle->sensor_priv;
+ struct sensors_info *si = ph->get_priv(ph);
return si->sensors + sensor_id;
}
-static int scmi_sensor_count_get(const struct scmi_handle *handle)
+static int scmi_sensor_count_get(const struct scmi_protocol_handle *ph)
{
- struct sensors_info *si = handle->sensor_priv;
+ struct sensors_info *si = ph->get_priv(ph);
return si->num_sensors;
}
-static struct scmi_sensor_ops sensor_ops = {
+static const struct scmi_sensor_proto_ops sensor_proto_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,
+ .reading_get_timestamped = scmi_sensor_reading_get_timestamped,
+ .config_get = scmi_sensor_config_get,
+ .config_set = scmi_sensor_config_set,
};
-static int scmi_sensors_protocol_init(struct scmi_handle *handle)
+static int scmi_sensor_set_notify_enabled(const struct scmi_protocol_handle *ph,
+ u8 evt_id, u32 src_id, bool enable)
+{
+ int ret;
+
+ switch (evt_id) {
+ case SCMI_EVENT_SENSOR_TRIP_POINT_EVENT:
+ ret = scmi_sensor_trip_point_notify(ph, src_id, enable);
+ break;
+ case SCMI_EVENT_SENSOR_UPDATE:
+ ret = scmi_sensor_continuous_update_notify(ph, src_id, enable);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ 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_protocol_handle *ph,
+ u8 evt_id, ktime_t timestamp,
+ const void *payld, size_t payld_sz,
+ void *report, u32 *src_id)
+{
+ void *rep = NULL;
+
+ switch (evt_id) {
+ case SCMI_EVENT_SENSOR_TRIP_POINT_EVENT:
+ {
+ const struct scmi_sensor_trip_notify_payld *p = payld;
+ struct scmi_sensor_trip_point_report *r = report;
+
+ if (sizeof(*p) != payld_sz)
+ break;
+
+ 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;
+ rep = r;
+ break;
+ }
+ case SCMI_EVENT_SENSOR_UPDATE:
+ {
+ int i;
+ struct scmi_sensor_info *s;
+ const struct scmi_sensor_update_notify_payld *p = payld;
+ struct scmi_sensor_update_report *r = report;
+ struct sensors_info *sinfo = ph->get_priv(ph);
+
+ /* payld_sz is variable for this event */
+ r->sensor_id = le32_to_cpu(p->sensor_id);
+ if (r->sensor_id >= sinfo->num_sensors)
+ break;
+ r->timestamp = timestamp;
+ r->agent_id = le32_to_cpu(p->agent_id);
+ s = &sinfo->sensors[r->sensor_id];
+ /*
+ * The generated report r (@struct scmi_sensor_update_report)
+ * was pre-allocated to contain up to SCMI_MAX_NUM_SENSOR_AXIS
+ * readings: here it is filled with the effective @num_axis
+ * readings defined for this sensor or 1 for scalar sensors.
+ */
+ r->readings_count = s->num_axis ?: 1;
+ for (i = 0; i < r->readings_count; i++)
+ scmi_parse_sensor_readings(&r->readings[i],
+ &p->readings[i]);
+ *src_id = r->sensor_id;
+ rep = r;
+ break;
+ }
+ default:
+ break;
+ }
+
+ return rep;
+}
+
+static int scmi_sensor_get_num_sources(const struct scmi_protocol_handle *ph)
+{
+ struct sensors_info *si = ph->get_priv(ph);
+
+ return si->num_sensors;
+}
+
+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),
+ },
+ {
+ .id = SCMI_EVENT_SENSOR_UPDATE,
+ .max_payld_sz =
+ sizeof(struct scmi_sensor_update_notify_payld) +
+ SCMI_MAX_NUM_SENSOR_AXIS *
+ sizeof(struct scmi_sensor_reading_resp),
+ .max_report_sz = sizeof(struct scmi_sensor_update_report) +
+ SCMI_MAX_NUM_SENSOR_AXIS *
+ sizeof(struct scmi_sensor_reading),
+ },
+};
+
+static const struct scmi_event_ops sensor_event_ops = {
+ .get_num_sources = scmi_sensor_get_num_sources,
+ .set_notify_enabled = scmi_sensor_set_notify_enabled,
+ .fill_custom_report = scmi_sensor_fill_custom_report,
+};
+
+static const struct scmi_protocol_events sensor_protocol_events = {
+ .queue_sz = SCMI_PROTO_QUEUE_SZ,
+ .ops = &sensor_event_ops,
+ .evts = sensor_events,
+ .num_events = ARRAY_SIZE(sensor_events),
+};
+
+static int scmi_sensors_protocol_init(const struct scmi_protocol_handle *ph)
{
u32 version;
+ int ret;
struct sensors_info *sinfo;
- scmi_version_get(handle, SCMI_PROTOCOL_SENSOR, &version);
+ ph->xops->version_get(ph, &version);
- dev_dbg(handle->dev, "Sensor Version %d.%d\n",
+ dev_dbg(ph->dev, "Sensor Version %d.%d\n",
PROTOCOL_REV_MAJOR(version), PROTOCOL_REV_MINOR(version));
- sinfo = devm_kzalloc(handle->dev, sizeof(*sinfo), GFP_KERNEL);
+ sinfo = devm_kzalloc(ph->dev, sizeof(*sinfo), GFP_KERNEL);
if (!sinfo)
return -ENOMEM;
+ sinfo->version = version;
- scmi_sensor_attributes_get(handle, sinfo);
-
- sinfo->sensors = devm_kcalloc(handle->dev, sinfo->num_sensors,
+ ret = scmi_sensor_attributes_get(ph, sinfo);
+ if (ret)
+ return ret;
+ sinfo->sensors = devm_kcalloc(ph->dev, sinfo->num_sensors,
sizeof(*sinfo->sensors), GFP_KERNEL);
if (!sinfo->sensors)
return -ENOMEM;
- scmi_sensor_description_get(handle, sinfo);
+ ret = scmi_sensor_description_get(ph, sinfo);
+ if (ret)
+ return ret;
- sinfo->version = version;
- handle->sensor_ops = &sensor_ops;
- handle->sensor_priv = sinfo;
-
- return 0;
+ return ph->set_priv(ph, sinfo);
}
-DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(SCMI_PROTOCOL_SENSOR, sensors)
+static const struct scmi_protocol scmi_sensors = {
+ .id = SCMI_PROTOCOL_SENSOR,
+ .owner = THIS_MODULE,
+ .init_instance = &scmi_sensors_protocol_init,
+ .ops = &sensor_proto_ops,
+ .events = &sensor_protocol_events,
+};
+
+DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(sensors, scmi_sensors)
--
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