Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 97 insertions, 0 deletions

diff --git a/drivers/iio/gyro/mpu3050.h b/drivers/iio/gyro/mpu3050.h
new file mode 100644
index 000000000..835b0249c
--- /dev/null
+++ b/drivers/iio/gyro/mpu3050.h
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/iio/iio.h>
+#include <linux/mutex.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/i2c.h>
+
+/**
+ * enum mpu3050_fullscale - indicates the full range of the sensor in deg/sec
+ */
+enum mpu3050_fullscale {
+	FS_250_DPS = 0,
+	FS_500_DPS,
+	FS_1000_DPS,
+	FS_2000_DPS,
+};
+
+/**
+ * enum mpu3050_lpf - indicates the low pass filter width
+ */
+enum mpu3050_lpf {
+	/* This implicity sets sample frequency to 8 kHz */
+	LPF_256_HZ_NOLPF = 0,
+	/* All others sets the sample frequency to 1 kHz */
+	LPF_188_HZ,
+	LPF_98_HZ,
+	LPF_42_HZ,
+	LPF_20_HZ,
+	LPF_10_HZ,
+	LPF_5_HZ,
+	LPF_2100_HZ_NOLPF,
+};
+
+enum mpu3050_axis {
+	AXIS_X = 0,
+	AXIS_Y,
+	AXIS_Z,
+	AXIS_MAX,
+};
+
+/**
+ * struct mpu3050 - instance state container for the device
+ * @dev: parent device for this instance
+ * @orientation: mounting matrix, flipped axis etc
+ * @map: regmap to reach the registers
+ * @lock: serialization lock to marshal all requests
+ * @irq: the IRQ used for this device
+ * @regs: the regulators to power this device
+ * @fullscale: the current fullscale setting for the device
+ * @lpf: digital low pass filter setting for the device
+ * @divisor: base frequency divider: divides 8 or 1 kHz
+ * @calibration: the three signed 16-bit calibration settings that
+ * get written into the offset registers for each axis to compensate
+ * for DC offsets
+ * @trig: trigger for the MPU-3050 interrupt, if present
+ * @hw_irq_trigger: hardware interrupt trigger is in use
+ * @irq_actl: interrupt is active low
+ * @irq_latch: latched IRQ, this means that it is a level IRQ
+ * @irq_opendrain: the interrupt line shall be configured open drain
+ * @pending_fifo_footer: tells us if there is a pending footer in the FIFO
+ * that we have to read out first when handling the FIFO
+ * @hw_timestamp: latest hardware timestamp from the trigger IRQ, when in
+ * use
+ * @i2cmux: an I2C mux reflecting the fact that this sensor is a hub with
+ * a pass-through I2C interface coming out of it: this device needs to be
+ * powered up in order to reach devices on the other side of this mux
+ */
+struct mpu3050 {
+	struct device *dev;
+	struct iio_mount_matrix orientation;
+	struct regmap *map;
+	struct mutex lock;
+	int irq;
+	struct regulator_bulk_data regs[2];
+	enum mpu3050_fullscale fullscale;
+	enum mpu3050_lpf lpf;
+	u8 divisor;
+	s16 calibration[3];
+	struct iio_trigger *trig;
+	bool hw_irq_trigger;
+	bool irq_actl;
+	bool irq_latch;
+	bool irq_opendrain;
+	bool pending_fifo_footer;
+	s64 hw_timestamp;
+	struct i2c_mux_core *i2cmux;
+};
+
+/* Probe called from different transports */
+int mpu3050_common_probe(struct device *dev,
+			 struct regmap *map,
+			 int irq,
+			 const char *name);
+int mpu3050_common_remove(struct device *dev);
+
+/* PM ops */
+extern const struct dev_pm_ops mpu3050_dev_pm_ops;