diff options
Diffstat (limited to 'include/linux/mpu.h')
| -rw-r--r-- | include/linux/mpu.h | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/include/linux/mpu.h b/include/linux/mpu.h new file mode 100644 index 000000000000..1977b38b8c15 --- /dev/null +++ b/include/linux/mpu.h @@ -0,0 +1,367 @@ +/* + $License: + Copyright (C) 2011 InvenSense Corporation, All Rights Reserved. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + $ + */ + +#ifndef __MPU_H_ +#define __MPU_H_ + +#include <linux/types.h> +#include <linux/ioctl.h> + +/* Number of axes on each sensor */ +#define GYRO_NUM_AXES (3) +#define ACCEL_NUM_AXES (3) +#define COMPASS_NUM_AXES (3) + +struct mpu_read_write { + /* Memory address or register address depending on ioctl */ + __u16 address; + __u16 length; + __u8 *data; +}; + +enum mpuirq_data_type { + MPUIRQ_DATA_TYPE_MPU_IRQ, + MPUIRQ_DATA_TYPE_SLAVE_IRQ, + MPUIRQ_DATA_TYPE_PM_EVENT, + MPUIRQ_DATA_TYPE_NUM_TYPES, +}; + +/* User space PM event notification */ +#define MPU_PM_EVENT_SUSPEND_PREPARE (3) +#define MPU_PM_EVENT_POST_SUSPEND (4) + +struct mpuirq_data { + __u32 interruptcount; + __u64 irqtime; + __u32 data_type; + __s32 data; +}; + +enum ext_slave_config_key { + MPU_SLAVE_CONFIG_ODR_SUSPEND, + MPU_SLAVE_CONFIG_ODR_RESUME, + MPU_SLAVE_CONFIG_FSR_SUSPEND, + MPU_SLAVE_CONFIG_FSR_RESUME, + MPU_SLAVE_CONFIG_MOT_THS, + MPU_SLAVE_CONFIG_NMOT_THS, + MPU_SLAVE_CONFIG_MOT_DUR, + MPU_SLAVE_CONFIG_NMOT_DUR, + MPU_SLAVE_CONFIG_IRQ_SUSPEND, + MPU_SLAVE_CONFIG_IRQ_RESUME, + MPU_SLAVE_WRITE_REGISTERS, + MPU_SLAVE_READ_REGISTERS, + MPU_SLAVE_CONFIG_INTERNAL_REFERENCE, + /* AMI 306 specific config keys */ + MPU_SLAVE_PARAM, + MPU_SLAVE_WINDOW, + MPU_SLAVE_READWINPARAMS, + MPU_SLAVE_SEARCHOFFSET, + /* AKM specific config keys */ + MPU_SLAVE_READ_SCALE, + /* MPU3050 and MPU6050 Keys */ + MPU_SLAVE_INT_CONFIG, + MPU_SLAVE_EXT_SYNC, + MPU_SLAVE_FULL_SCALE, + MPU_SLAVE_LPF, + MPU_SLAVE_CLK_SRC, + MPU_SLAVE_DIVIDER, + MPU_SLAVE_DMP_ENABLE, + MPU_SLAVE_FIFO_ENABLE, + MPU_SLAVE_DMP_CFG1, + MPU_SLAVE_DMP_CFG2, + MPU_SLAVE_TC, + MPU_SLAVE_GYRO, + MPU_SLAVE_ADDR, + MPU_SLAVE_PRODUCT_REVISION, + MPU_SLAVE_SILICON_REVISION, + MPU_SLAVE_PRODUCT_ID, + MPU_SLAVE_GYRO_SENS_TRIM, + MPU_SLAVE_ACCEL_SENS_TRIM, + MPU_SLAVE_RAM, + /* -------------------------- */ + MPU_SLAVE_CONFIG_NUM_CONFIG_KEYS +}; + +/* For the MPU_SLAVE_CONFIG_IRQ_SUSPEND and MPU_SLAVE_CONFIG_IRQ_RESUME */ +enum ext_slave_config_irq_type { + MPU_SLAVE_IRQ_TYPE_NONE, + MPU_SLAVE_IRQ_TYPE_MOTION, + MPU_SLAVE_IRQ_TYPE_DATA_READY, +}; + +/* Structure for the following IOCTS's + * MPU_CONFIG_GYRO + * MPU_CONFIG_ACCEL + * MPU_CONFIG_COMPASS + * MPU_CONFIG_PRESSURE + * MPU_GET_CONFIG_GYRO + * MPU_GET_CONFIG_ACCEL + * MPU_GET_CONFIG_COMPASS + * MPU_GET_CONFIG_PRESSURE + * + * @key one of enum ext_slave_config_key + * @len length of data pointed to by data + * @apply zero if communication with the chip is not necessary, false otherwise + * This flag can be used to select cached data or to refresh cashed data + * cache data to be pushed later or push immediately. If true and the + * slave is on the secondary bus the MPU will first enger bypass mode + * before calling the slaves .config or .get_config funcion + * @data pointer to the data to confgure or get + */ +struct ext_slave_config { + __u8 key; + __u16 len; + __u8 apply; + void *data; +}; + +enum ext_slave_type { + EXT_SLAVE_TYPE_GYROSCOPE, + EXT_SLAVE_TYPE_ACCEL, + EXT_SLAVE_TYPE_COMPASS, + EXT_SLAVE_TYPE_PRESSURE, + /*EXT_SLAVE_TYPE_TEMPERATURE */ + + EXT_SLAVE_NUM_TYPES +}; + +enum ext_slave_id { + ID_INVALID = 0, + + ACCEL_ID_LIS331, + ACCEL_ID_LSM303DLX, + ACCEL_ID_LIS3DH, + ACCEL_ID_KXSD9, + ACCEL_ID_KXTF9, + ACCEL_ID_BMA150, + ACCEL_ID_BMA222, + ACCEL_ID_BMA250, + ACCEL_ID_ADXL34X, + ACCEL_ID_MMA8450, + ACCEL_ID_MMA845X, + ACCEL_ID_MPU6050, + + COMPASS_ID_AK8975, + COMPASS_ID_AK8963, + COMPASS_ID_AK8972, + COMPASS_ID_AMI30X, + COMPASS_ID_AMI306, + COMPASS_ID_YAS529, + COMPASS_ID_YAS530, + COMPASS_ID_HMC5883, + COMPASS_ID_LSM303DLH, + COMPASS_ID_LSM303DLM, + COMPASS_ID_MMC314X, + COMPASS_ID_HSCDTD002B, + COMPASS_ID_HSCDTD004A, + + PRESSURE_ID_BMA085, +}; + +enum ext_slave_endian { + EXT_SLAVE_BIG_ENDIAN, + EXT_SLAVE_LITTLE_ENDIAN, + EXT_SLAVE_FS8_BIG_ENDIAN, + EXT_SLAVE_FS16_BIG_ENDIAN, +}; + +enum ext_slave_bus { + EXT_SLAVE_BUS_INVALID = -1, + EXT_SLAVE_BUS_PRIMARY = 0, + EXT_SLAVE_BUS_SECONDARY = 1 +}; + + +/** + * struct ext_slave_platform_data - Platform data for mpu3050 and mpu6050 + * slave devices + * + * @type: the type of slave device based on the enum ext_slave_type + * definitions. + * @irq: the irq number attached to the slave if any. + * @adapt_num: the I2C adapter number. + * @bus: the bus the slave is attached to: enum ext_slave_bus + * @address: the I2C slave address of the slave device. + * @orientation: the mounting matrix of the device relative to MPU. + * @irq_data: private data for the slave irq handler + * @private_data: additional data, user customizable. Not touched by the MPU + * driver. + * + * The orientation matricies are 3x3 rotation matricies + * that are applied to the data to rotate from the mounting orientation to the + * platform orientation. The values must be one of 0, 1, or -1 and each row and + * column should have exactly 1 non-zero value. + */ +struct ext_slave_platform_data { + __u8 type; + __u32 irq; + __u32 adapt_num; + __u32 bus; + __u8 address; + __s8 orientation[9]; + void *irq_data; + void *private_data; +}; + +struct fix_pnt_range { + __s32 mantissa; + __s32 fraction; +}; + +static inline long range_fixedpoint_to_long_mg(struct fix_pnt_range rng) +{ + return (long)(rng.mantissa * 1000 + rng.fraction / 10); +} + +struct ext_slave_read_trigger { + __u8 reg; + __u8 value; +}; + +/** + * struct ext_slave_descr - Description of the slave device for programming. + * + * @suspend: function pointer to put the device in suspended state + * @resume: function pointer to put the device in running state + * @read: function that reads the device data + * @init: function used to preallocate memory used by the driver + * @exit: function used to free memory allocated for the driver + * @config: function used to configure the device + * @get_config:function used to get the device's configuration + * + * @name: text name of the device + * @type: device type. enum ext_slave_type + * @id: enum ext_slave_id + * @read_reg: starting register address to retrieve data. + * @read_len: length in bytes of the sensor data. Typically 6. + * @endian: byte order of the data. enum ext_slave_endian + * @range: full scale range of the slave ouput: struct fix_pnt_range + * @trigger: If reading data first requires writing a register this is the + * data to write. + * + * Defines the functions and information about the slave the mpu3050 and + * mpu6050 needs to use the slave device. + */ +struct ext_slave_descr { + int (*init) (void *mlsl_handle, + struct ext_slave_descr *slave, + struct ext_slave_platform_data *pdata); + int (*exit) (void *mlsl_handle, + struct ext_slave_descr *slave, + struct ext_slave_platform_data *pdata); + int (*suspend) (void *mlsl_handle, + struct ext_slave_descr *slave, + struct ext_slave_platform_data *pdata); + int (*resume) (void *mlsl_handle, + struct ext_slave_descr *slave, + struct ext_slave_platform_data *pdata); + int (*read) (void *mlsl_handle, + struct ext_slave_descr *slave, + struct ext_slave_platform_data *pdata, + __u8 *data); + int (*config) (void *mlsl_handle, + struct ext_slave_descr *slave, + struct ext_slave_platform_data *pdata, + struct ext_slave_config *config); + int (*get_config) (void *mlsl_handle, + struct ext_slave_descr *slave, + struct ext_slave_platform_data *pdata, + struct ext_slave_config *config); + + char *name; + __u8 type; + __u8 id; + __u8 read_reg; + __u8 read_len; + __u8 endian; + struct fix_pnt_range range; + struct ext_slave_read_trigger *trigger; +}; + +/** + * struct mpu_platform_data - Platform data for the mpu driver + * @int_config: Bits [7:3] of the int config register. + * @level_shifter: 0: VLogic, 1: VDD + * @orientation: Orientation matrix of the gyroscope + * + * Contains platform specific information on how to configure the MPU3050 to + * work on this platform. The orientation matricies are 3x3 rotation matricies + * that are applied to the data to rotate from the mounting orientation to the + * platform orientation. The values must be one of 0, 1, or -1 and each row and + * column should have exactly 1 non-zero value. + */ +struct mpu_platform_data { + __u8 int_config; + __u8 level_shifter; + __s8 orientation[GYRO_NUM_AXES * GYRO_NUM_AXES]; +}; + +#define MPU_IOCTL (0x81) /* Magic number for MPU Iocts */ +/* IOCTL commands for /dev/mpu */ + +/*-------------------------------------------------------------------------- + * Deprecated, debugging only + */ +#define MPU_SET_MPU_PLATFORM_DATA \ + _IOWR(MPU_IOCTL, 0x01, struct mpu_platform_data) +#define MPU_SET_EXT_SLAVE_PLATFORM_DATA \ + _IOWR(MPU_IOCTL, 0x01, struct ext_slave_platform_data) +/*--------------------------------------------------------------------------*/ +#define MPU_GET_EXT_SLAVE_PLATFORM_DATA \ + _IOWR(MPU_IOCTL, 0x02, struct ext_slave_platform_data) +#define MPU_GET_MPU_PLATFORM_DATA \ + _IOWR(MPU_IOCTL, 0x02, struct mpu_platform_data) +#define MPU_GET_EXT_SLAVE_DESCR \ + _IOWR(MPU_IOCTL, 0x02, struct ext_slave_descr) + +#define MPU_READ _IOWR(MPU_IOCTL, 0x10, struct mpu_read_write) +#define MPU_WRITE _IOW(MPU_IOCTL, 0x10, struct mpu_read_write) +#define MPU_READ_MEM _IOWR(MPU_IOCTL, 0x11, struct mpu_read_write) +#define MPU_WRITE_MEM _IOW(MPU_IOCTL, 0x11, struct mpu_read_write) +#define MPU_READ_FIFO _IOWR(MPU_IOCTL, 0x12, struct mpu_read_write) +#define MPU_WRITE_FIFO _IOW(MPU_IOCTL, 0x12, struct mpu_read_write) + +#define MPU_READ_COMPASS _IOR(MPU_IOCTL, 0x12, __u8) +#define MPU_READ_ACCEL _IOR(MPU_IOCTL, 0x13, __u8) +#define MPU_READ_PRESSURE _IOR(MPU_IOCTL, 0x14, __u8) + +#define MPU_CONFIG_GYRO _IOW(MPU_IOCTL, 0x20, struct ext_slave_config) +#define MPU_CONFIG_ACCEL _IOW(MPU_IOCTL, 0x21, struct ext_slave_config) +#define MPU_CONFIG_COMPASS _IOW(MPU_IOCTL, 0x22, struct ext_slave_config) +#define MPU_CONFIG_PRESSURE _IOW(MPU_IOCTL, 0x23, struct ext_slave_config) + +#define MPU_GET_CONFIG_GYRO _IOWR(MPU_IOCTL, 0x20, struct ext_slave_config) +#define MPU_GET_CONFIG_ACCEL _IOWR(MPU_IOCTL, 0x21, struct ext_slave_config) +#define MPU_GET_CONFIG_COMPASS _IOWR(MPU_IOCTL, 0x22, struct ext_slave_config) +#define MPU_GET_CONFIG_PRESSURE _IOWR(MPU_IOCTL, 0x23, struct ext_slave_config) + +#define MPU_SUSPEND _IOW(MPU_IOCTL, 0x30, __u32) +#define MPU_RESUME _IOW(MPU_IOCTL, 0x31, __u32) +/* Userspace PM Event response */ +#define MPU_PM_EVENT_HANDLED _IO(MPU_IOCTL, 0x32) + +#define MPU_GET_REQUESTED_SENSORS _IOR(MPU_IOCTL, 0x40, __u8) +#define MPU_SET_REQUESTED_SENSORS _IOW(MPU_IOCTL, 0x40, __u8) +#define MPU_GET_IGNORE_SYSTEM_SUSPEND _IOR(MPU_IOCTL, 0x41, __u8) +#define MPU_SET_IGNORE_SYSTEM_SUSPEND _IOW(MPU_IOCTL, 0x41, __u8) +#define MPU_GET_MLDL_STATUS _IOR(MPU_IOCTL, 0x42, __u8) +#define MPU_GET_I2C_SLAVES_ENABLED _IOR(MPU_IOCTL, 0x43, __u8) + + +#endif /* __MPU_H_ */ |