diff options
Diffstat (limited to 'include/linux/mma8452.h')
| -rw-r--r-- | include/linux/mma8452.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/include/linux/mma8452.h b/include/linux/mma8452.h new file mode 100644 index 000000000000..b97d2900d833 --- /dev/null +++ b/include/linux/mma8452.h @@ -0,0 +1,139 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Definitions for mma8452 compass chip. + */ +#ifndef MMA8452_H +#define MMA8452_H + +#include <linux/ioctl.h> + +/* Default register settings */ +#define RBUFF_SIZE 12 /* Rx buffer size */ + +#define MMA8452_REG_STATUS 0x0 //RO +#define MMA8452_REG_X_OUT_MSB 0x1 //RO +#define MMA8452_REG_X_OUT_LSB 0x2 //RO +#define MMA8452_REG_Y_OUT_MSB 0x3 //RO +#define MMA8452_REG_Y_OUT_LSB 0x4 //RO +#define MMA8452_REG_Z_OUT_MSB 0x5 //RO +#define MMA8452_REG_Z_OUT_LSB 0x6 //RO +#define MMA8452_REG_F_SETUP 0x9 //RW + +#define MMA8452_REG_SYSMOD 0xB //RO +#define MMA8452_REG_INTSRC 0xC //RO +#define MMA8452_REG_WHO_AM_I 0xD //RO +#define MMA8452_REG_XYZ_DATA_CFG 0xE //RW +#define MMA8452_REG_HP_FILTER_CUTOFF 0xF //RW +#define MMA8452_REG_PL_STATUS 0x10 //RO +#define MMA8452_REG_PL_CFG 0x11 //RW +#define MMA8452_REG_PL_COUNT 0x12 //RW +#define MMA8452_REG_PL_BF_ZCOMP 0x13 //RW +#define MMA8452_REG_P_L_THS_REG 0x14 //RW +#define MMA8452_REG_FF_MT_CFG 0x15 //RW +#define MMA8452_REG_FF_MT_SRC 0x16 //RO +#define MMA8452_REG_FF_MT_THS 0x17 //RW +#define MMA8452_REG_FF_MT_COUNT 0x18 //RW +#define MMA8452_REG_TRANSIENT_CFG 0x1D //RW +#define MMA8452_REG_TRANSIENT_SRC 0x1E //RO +#define MMA8452_REG_TRANSIENT_THS 0x1F //RW +#define MMA8452_REG_TRANSIENT_COUNT 0x20 //RW +#define MMA8452_REG_PULSE_CFG 0x21 //RW +#define MMA8452_REG_PULSE_SRC 0x22 //RO +#define MMA8452_REG_PULSE_THSX 0x23 //RW +#define MMA8452_REG_PULSE_THSY 0x24 //RW +#define MMA8452_REG_PULSE_THSZ 0x25 //RW +#define MMA8452_REG_PULSE_TMLT 0x26 //RW +#define MMA8452_REG_PULSE_LTCY 0x27 //RW +#define MMA8452_REG_PULSE_WIND 0x28 //RW +#define MMA8452_REG_ASLP_COUNT 0x29 //RW +#define MMA8452_REG_CTRL_REG1 0x2A //RW +#define MMA8452_REG_CTRL_REG2 0x2B //RW +#define MMA8452_REG_CTRL_REG3 0x2C //RW +#define MMA8452_REG_CTRL_REG4 0x2D //RW +#define MMA8452_REG_CTRL_REG5 0x2E //RW +#define MMA8452_REG_OFF_X 0x2F //RW +#define MMA8452_REG_OFF_Y 0x30 //RW +#define MMA8452_REG_OFF_Z 0x31 //RW + +#define MMAIO 0xA1 + +/* IOCTLs for MMA8452 library */ +#define MMA_IOCTL_INIT _IO(MMAIO, 0x01) +#define MMA_IOCTL_RESET _IO(MMAIO, 0x04) +#define MMA_IOCTL_CLOSE _IO(MMAIO, 0x02) +#define MMA_IOCTL_START _IO(MMAIO, 0x03) +#define MMA_IOCTL_GETDATA _IOR(MMAIO, 0x08, char[RBUFF_SIZE+1]) + +/* IOCTLs for APPs */ +#define MMA_IOCTL_APP_SET_RATE _IOW(MMAIO, 0x10, char) + + +/*rate*/ +#define MMA8452_RATE_800 0 +#define MMA8452_RATE_400 1 +#define MMA8452_RATE_200 2 +#define MMA8452_RATE_100 3 +#define MMA8452_RATE_50 4 +#define MMA8452_RATE_12P5 5 +#define MMA8452_RATE_6P25 6 +#define MMA8452_RATE_1P56 7 +#define MMA8452_RATE_SHIFT 3 + + +#define MMA8452_ASLP_RATE_50 0 +#define MMA8452_ASLP_RATE_12P5 1 +#define MMA8452_ASLP_RATE_6P25 2 +#define MMA8452_ASLP_RATE_1P56 3 +#define MMA8452_ASLP_RATE_SHIFT 6 + +/*Auto-adapt mma845x series*/ +/*Modified by Yick @ROCKCHIP + xieyi@rockchips.com*/ +/* + Range: unit(ug 1g=1 000 000 ug) + option(2g,4g,8g) + G would be defined on android HAL + Precision: bit wide of valid data + Boundary: Max positive count + Gravity_step: gravity value indicated by per count + */ +#define FREAD_MASK 0 /* enabled(1<<1) only if reading MSB 8bits*/ +#define MMA845X_RANGE 2000000 +/* mma8451 */ +#define MMA8451_PRECISION 14 +#define MMA8451_BOUNDARY (0x1 << (MMA8451_PRECISION - 1)) +#define MMA8451_GRAVITY_STEP MMA845X_RANGE / MMA8451_BOUNDARY + +/* mma8452 */ +#define MMA8452_PRECISION 12 +#define MMA8452_BOUNDARY (0x1 << (MMA8452_PRECISION - 1)) +#define MMA8452_GRAVITY_STEP MMA845X_RANGE / MMA8452_BOUNDARY + +/* mma8453 */ +#define MMA8453_PRECISION 10 +#define MMA8453_BOUNDARY (0x1 << (MMA8453_PRECISION - 1)) +#define MMA8453_GRAVITY_STEP MMA845X_RANGE / MMA8453_BOUNDARY + +/*End of precision adaption*/ + +#define MMA8452_TOTAL_TIME 10 + +#define ACTIVE_MASK 1 + +/*status*/ +#define MMA8452_SUSPEND 2 +#define MMA8452_OPEN 1 +#define MMA8452_CLOSE 0 + +#define MMA8452_REG_LEN 11 + +struct mma8452_axis { + int x; + int y; + int z; +}; + +#define GSENSOR_DEV_PATH "/dev/mma8452_daemon" + +#endif + |