zephyr: DT: basic support for motion sensor

This change allows sensor drivers to create
motion sensor entry using the information from DT.

BUG=b:173507858
BRANCH=none
TEST=make buildall -j8
build volteer on zephyr

Signed-off-by: Hyungwoo Yang <hyungwoo.yang@intel.corp-partner.google.com>
Change-Id: I1cae9760492966601c1d98050764a2e93b4fc013
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2778816
Reviewed-by: Simon Glass <sjg@chromium.org>

2 files changed, 140 insertions, 0 deletions

diff --git a/zephyr/dts/bindings/motionsense/cros-ec,motionsense-sensor-config.yaml b/zephyr/dts/bindings/motionsense/cros-ec,motionsense-sensor-config.yaml
new file mode 100644
index 0000000000..68cdd15637
--- /dev/null
+++ b/zephyr/dts/bindings/motionsense/cros-ec,motionsense-sensor-config.yaml
@@ -0,0 +1,66 @@
+# Copyright 2021 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+description: |
+    There are 4 configuration parameters to deal with different
+    configuration
+    Power   |         S0        |            S3     |      S5
+    --------+-------------------+-------------------+-----------------
+    From AP | <------- SENSOR_CONFIG_AP ----------> |
+            | Use for normal    | While sleeping    | Always disabled
+            | operation (game,  | For Activity      |
+            | screen rotation)  | Recognition       |
+    --------+-------------------+-------------------+------------------
+    From EC |SENSOR_CONFIG_EC_S0|SENSOR_CONFIG_EC_S3|SENSOR_CONFIG_EC_S5
+            | Background        | Gesture  Recognition (Double tap, ...)
+            | Activity (compass,|
+            | ambient light)    |
+
+compatible: "cros-ec,motionsense-sensor-config"
+
+child-binding:
+  description: |
+    A config node is used to create a motion_data_t instance.
+    Node name can only be either ap, ec-s0, ec-s3, or ec-s5,
+    and it is used to indicate one of the 4 configurations.
+    For example, node name ec-s0 is for SENSOR_CONFIG_EC_S0.
+    ec-s0 {
+       label = "SENSOR_CONFIG_EC_S0";
+       odr = <1000>;
+       ec_rate = <1000>;
+    };
+  properties:
+    label:
+      type: string
+      required: false
+      description: |
+        Human-readable string describing the config.
+        see the example the above.
+    odr:
+      type: int
+      required: false
+      description: |
+        Sensor output data rate in mHz.
+        MSB is used to know if we are rounding up.
+    ec-rate:
+      type: int
+      required: false
+      description: Delay between collection by EC, in us.
+
+#
+# examples:
+#
+# configs {
+#         compatible =
+#                 "cros-ec,motionsense-sensor-config";
+#         ec-s0 {
+#                 label = "SENSOR_CONFIG_EC_S0";
+#                 odr = <(10000 | ROUND_UP_FLAG)>;
+#         };
+#         ec-s3 {
+#                 label = "SENSOR_CONFIG_EC_S3";
+#                 odr = <(10000 | ROUND_UP_FLAG)>;
+#         };
+# };
+#
diff --git a/zephyr/dts/bindings/motionsense/motionsense-sensor-base.yaml b/zephyr/dts/bindings/motionsense/motionsense-sensor-base.yaml
new file mode 100644
index 0000000000..87d54dbbe6
--- /dev/null
+++ b/zephyr/dts/bindings/motionsense/motionsense-sensor-base.yaml
@@ -0,0 +1,74 @@
+# Copyright 2021 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Common fields for motion sensors
+
+include: base.yaml
+
+properties:
+  status:
+    required: true
+  label:
+    type: string
+    required: true
+    description: |
+        Human readable string describing the motion sensor.
+        This is used as the name of the motion sensor.
+        e.g) label = "Lid Accel";
+  active-mask:
+    type: string
+    required: true
+    description: indicates system power state for sensor to be active
+    enum:
+      - "SENSOR_ACTIVE_S5"
+      - "SENSOR_ACTIVE_S3"
+      - "SENSOR_ACTIVE_S0"
+      - "SENSOR_ACTIVE_S0_S3"
+      - "SENSOR_ACTIVE_S0_S3_S5"
+  location:
+    type: string
+    required: true
+    description: location of the motion sensor
+    enum:
+      - "MOTIONSENSE_LOC_BASE"
+      - "MOTIONSENSE_LOC_LID"
+      - "MOTIONSENSE_LOC_CAMERA"
+  mutex:
+    type: phandle
+    required: false
+    description: mutex used by chip driver
+  port:
+    type: phandle
+    required: false
+    description: phandle to the named i2c port
+  rot-standard-ref:
+    type: phandle
+    required: false
+    description: phandle to 3x3 rotation matrix
+  default-range:
+    type: int
+    required: false
+    description: default range of sensor read
+  drv-data:
+    type: phandle
+    required: false
+    description: phandle to driver data to be used for the motion sensor
+
+#
+# examples:
+#
+# lid_accel: lid-accel {
+#           compatible = "cros-ec,bma255";
+#           status = "okay";
+#
+#           label = "Lid Accel";
+#           active-mask = "SENSOR_ACTIVE_S0_S3";
+#           location = "MOTIONSENSE_LOC_LID";
+#           mutex = <&mutex_bma255>;
+#           port = <&i2c_sensor>;
+#           rot-standard-ref = <&lid_rot_ref>;
+#           default-range = <2>;
+#           drv-data = <&bma255_data>;
+# };
+#