zephyr: DT: support sensor driver data

This has basic support to create instances of sensor-specific
driver data using the information from device tree.

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: I196d7595e8bd880e2314290660f08274ad99e172
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2778815
Reviewed-by: Simon Glass <sjg@chromium.org>

1 files changed, 127 insertions, 0 deletions

diff --git a/zephyr/shim/src/motionsense_driver/drvdata-accelgyro.h b/zephyr/shim/src/motionsense_driver/drvdata-accelgyro.h
new file mode 100644
index 0000000000..069587f90f
--- /dev/null
+++ b/zephyr/shim/src/motionsense_driver/drvdata-accelgyro.h
@@ -0,0 +1,127 @@
+/* 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.
+ */
+
+/*
+ * Macros are to help creating driver data. A driver data that uses
+ * any data structures defined in accelgyro.h should use the macros here
+ * to utilize the information in device tree.
+ *
+ */
+#ifndef __ZEPHYR_SHIM_SRC_MOTIONSENSE_DRIVER_DRVDATA_ACCELGYRO_H
+#define __ZEPHYR_SHIM_SRC_MOTIONSENSE_DRIVER_DRVDATA_ACCELGYRO_H
+
+/*
+ * compatible = "cros-ec,accelgyro-als-channel-scale"
+ * als_channel_scale_t in accelgyro.h
+ *
+ * e.g) The following is the example in DT for als_channel_scale_t
+ * als-channel-scale {
+ *	compatible = "cros-ec,accelgyro-als-channel-scale";
+ *		k-channel-scale = <1>;
+ *		cover-scale = <1>;
+ *	};
+ */
+#define ACCELGYRO_ALS_CHANNEL_SCALE(id)					\
+	{								\
+		.k_channel_scale =					\
+			ALS_CHANNEL_SCALE(DT_PROP(id, k_channel_scale)),\
+		.cover_scale =						\
+			ALS_CHANNEL_SCALE(DT_PROP(id, cover_scale)),	\
+	}
+
+#define ALS_CALIBRATION_CHANNEL_SCALE(id)				\
+	.als_cal.channel_scale = ACCELGYRO_ALS_CHANNEL_SCALE(id),
+
+#define ALS_CALIBRATION_SET(id)					\
+	.als_cal.scale = DT_PROP(id, scale),			\
+	.als_cal.uscale = DT_PROP(id, uscale),			\
+	.als_cal.offset = DT_PROP(id, offset),			\
+	ALS_CALIBRATION_CHANNEL_SCALE(DT_CHILD(id, als_channel_scale))
+
+/*
+ * compatible = "cros-ec,accelgyro-als-drv-data"
+ * als_drv_data_t in accelgyro.h
+ *
+ * e.g) The following is the example in DT for als_drv_data_t 
+ * als-drv-data {
+ *	compatible = "cros-ec,accelgyro-als-drv-data";
+ *	als-cal {
+ *		scale = <1>;
+ *		uscale = <0>;
+ *		offset = <0>;
+ *		als-channel-scale {
+ *		compatible = "cros-ec,accelgyro-als-channel-scale";
+ *			k-channel-scale = <1>;
+ *			cover-scale = <1>;
+ *		};
+ *	};
+ * };
+ */
+#define ACCELGYRO_ALS_DRV_DATA(id)					\
+	{								\
+		ALS_CALIBRATION_SET(DT_CHILD(id, als_cal))		\
+	}
+
+#define RGB_CAL_RGB_SET_SCALE(id)			\
+	.scale = ACCELGYRO_ALS_CHANNEL_SCALE(id),
+
+#define RGB_CAL_RGB_SET_ONE(id, suffix)					\
+	.rgb_cal[suffix] = {						\
+	    .offset = DT_PROP(id, offset),				\
+	    .coeff[0] = FLOAT_TO_FP(DT_PROP_BY_IDX(id, coeff, 0)),	\
+	    .coeff[1] = FLOAT_TO_FP(DT_PROP_BY_IDX(id, coeff, 1)),	\
+	    .coeff[2] = FLOAT_TO_FP(DT_PROP_BY_IDX(id, coeff, 2)),	\
+	    .coeff[3] = FLOAT_TO_FP(DT_PROP_BY_IDX(id, coeff, 3)),	\
+	    RGB_CAL_RGB_SET_SCALE(DT_CHILD(id, als_channel_scale))	\
+	},
+
+/*
+ * compatible = "cros-ec,accelgyro-rgb-calibration"
+ * rgb_calibration_t in accelgyro.h
+ *
+ * e.g) The following is the example in DT for rgb_calibration_t
+ * rgb_calibration {
+ * 	compatible = "cros-ec,accelgyro-rgb-calibration";
+ *
+ *	irt = <1>;
+ *
+ *	rgb-cal-x {
+ *		offset = <0>;
+ *		coeff = <0 0 0 0>;
+ *		als-channel-scale {
+ *		compatible = "cros-ec,accelgyro-als-channel-scale";
+ *			k-channel-scale = <1>;
+ *			cover-scale = <1>;
+ *		};
+ *	};
+ *	rgb-cal-y {
+ *		offset = <0>;
+ *		coeff = <0 0 0 0>;
+ *		als-channel-scale {
+ *		compatible = "cros-ec,accelgyro-als-channel-scale";
+ *			k-channel-scale = <1>;
+ *			cover-scale = <1>;
+ *		};
+ *	};
+ *	rgb-cal-z {
+ *		offset = <0>;
+ *		coeff = <0 0 0 0>;
+ *		als-channel-scale {
+ *		compatible = "cros-ec,accelgyro-als-channel-scale";
+ *			k-channel-scale = <1>;
+ *			cover-scale = <1>;
+ *		};
+ *	};
+ * };
+ */
+#define ACCELGYRO_RGB_CALIBRATION(id)				\
+	{							\
+		RGB_CAL_RGB_SET_ONE(DT_CHILD(id, rgb_cal_x), X)	\
+		RGB_CAL_RGB_SET_ONE(DT_CHILD(id, rgb_cal_y), Y)	\
+		RGB_CAL_RGB_SET_ONE(DT_CHILD(id, rgb_cal_z), Z)	\
+		.irt = INT_TO_FP(DT_PROP(id, irt)),		\
+	}
+
+#endif /* __ZEPHYR_SHIM_SRC_MOTIONSENSE_DRIVER_DRVDATA_ACCELGYRO_H */