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bc1d038eac5003cdc9cab2c363a88dbbc9bebe92
android/drivers/misc/mediatek/sensors-1.0/accelerometer/lis3dh/lis3dh.c
T
threeeye bc1d038eac REVVL 6 Pro kernel bring-up: full working tree snapshot (2026-09-12) 
Squashed backup commit (no shallow-clone history issues) of
xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream
commit 9eece662e) plus all fixes applied to get everpal_defconfig building
clean against a modern (GCC 15.2.0) toolchain -- see the previous commit
message on the lineage-23.2 branch (also in this repo history is not
available here since this is a squashed snapshot; full incremental history
lives in the local DL380 checkout and the upstream GitHub remote).

Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
2026-09-12 13:36:46 +00:00

1870 lines
43 KiB
C
Raw Blame History

/*****************************************************************************
* Copyright (C) 2016 MediaTek Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 http://www.gnu.org/licenses/gpl-2.0.html for more details.
*
* Accelerometer Sensor Driver
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*
*
*****************************************************************************/
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/irq.h>
#include <linux/miscdevice.h>
#include <linux/uaccess.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/workqueue.h>
#include <linux/kobject.h>
#include <linux/platform_device.h>
#include <linux/atomic.h>
#include "cust_acc.h"
#include "accel.h"
#include "sensors_io.h"
#include "lis3dh.h"
#define POWER_NONE_MACRO MT65XX_POWER_NONE
/*----------------------------------------------------------------------------*/
/* #define I2C_DRIVERID_LIS3DH 345 */
/*----------------------------------------------------------------------------*/
#define DEBUG 1
#define CONFIG_LIS3DH_LOWPASS /*apply low pass filter on output*/
#define LIS3DH_AXIS_X 0
#define LIS3DH_AXIS_Y 1
#define LIS3DH_AXIS_Z 2
#define LIS3DH_AXES_NUM 3
#define LIS3DH_DATA_LEN 6
#define LIS3DH_DEV_NAME "LIS3DH"
#define GSENSOR_IOCTL_READ_OFFSET \
_IOR(GSENSOR, 0x04, struct GSENSOR_VECTOR3D)
#define GSENSOR_IOCTL_READ_GAIN \
_IOR(GSENSOR, 0x05, struct GSENSOR_VECTOR3D)
#define ACC_TAG "<ACCELEROMETER> "
#define ACC_LOG(fmt, args...) pr_debug(ACC_TAG"%s %d : "\
fmt, __func__, __LINE__, ##args)
static const struct i2c_device_id lis3dh_i2c_id[] = {
{LIS3DH_DEV_NAME, 0},
{}
};
/* Maintain cust info here */
struct acc_hw accel_cust;
static struct acc_hw *hw = &accel_cust;
/* For driver get cust info */
struct acc_hw *get_cust_acc(void)
{
return &accel_cust;
}
static int lis3dh_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id);
static int lis3dh_i2c_remove(struct i2c_client *client);
static int lis3dh_i2c_detect(struct i2c_client *client,
struct i2c_board_info *info);
#ifdef CONFIG_PM_SLEEP
static int lis3dh_suspend(struct device *dev);
static int lis3dh_resume(struct device *dev);
#endif
static int lis3dh_local_init(void);
static int lis3dh_remove(void);
static int lis3dh_init_flag = -1;/* 0<==>OK -1 <==> fail */
enum {
ADX_TRC_FILTER = 0x01,
ADX_TRC_RAWDATA = 0x02,
ADX_TRC_IOCTL = 0x04,
ADX_TRC_CALI = 0X08,
ADX_TRC_INFO = 0X10,
} ADX_TRC;
struct scale_factor {
u8 whole;
u8 fraction;
};
struct data_resolution {
struct scale_factor scalefactor;
int sensitivity;
};
#define C_MAX_FIR_LENGTH (32)
struct data_filter {
s16 raw[C_MAX_FIR_LENGTH][LIS3DH_AXES_NUM];
int sum[LIS3DH_AXES_NUM];
int num;
int idx;
};
static struct acc_init_info lis3dh_init_info = {
.name = "lis3dh",
.init = lis3dh_local_init,
.uninit = lis3dh_remove,
};
#ifdef CONFIG_OF
static const struct of_device_id accel_of_match[] = {
{.compatible = "mediatek,gsensor"},
{},
};
#endif
struct lis3dh_i2c_data {
struct i2c_client *client;
struct acc_hw *hw;
struct hwmsen_convert cvt;
/*misc*/
struct data_resolution *reso;
atomic_t trace;
atomic_t suspend;
atomic_t selftest;
atomic_t filter;
s16 cali_sw[LIS3DH_AXES_NUM+1];
/*data*/
s8 offset[LIS3DH_AXES_NUM+1]; /*+1: for 4-byte alignment*/
s16 data[LIS3DH_AXES_NUM+1];
#if defined(CONFIG_LIS3DH_LOWPASS)
atomic_t firlen;
atomic_t fir_en;
struct data_filter fir;
#endif
};
#ifdef CONFIG_PM_SLEEP
static const struct dev_pm_ops lis3dh_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(lis3dh_suspend, lis3dh_resume)
};
#endif
static struct i2c_driver lis3dh_i2c_driver = {
.driver = {
.name = LIS3DH_DEV_NAME,
#ifdef CONFIG_PM_SLEEP
.pm = &lis3dh_pm_ops,
#endif
#ifdef CONFIG_OF
.of_match_table = accel_of_match,
#endif
},
.probe = lis3dh_i2c_probe,
.remove = lis3dh_i2c_remove,
.detect = lis3dh_i2c_detect,
.id_table = lis3dh_i2c_id,
/* .address_data = &lis3dh_addr_data, */
};
static struct i2c_client *lis3dh_i2c_client;
static struct lis3dh_i2c_data *obj_i2c_data;
static bool sensor_power = true;
static struct GSENSOR_VECTOR3D gsensor_gain, gsensor_offset;
/* static char selftestRes[10] = {0}; */
static DEFINE_MUTEX(lis3dh_i2c_mutex);
static DEFINE_MUTEX(lis3dh_op_mutex);
static bool enable_status;
static int sensor_suspend;
static struct data_resolution lis3dh_data_resolution[] = {
/* combination by {FULL_RES,RANGE}*/
/* dataformat +/-2g in 12-bit resolution;
* { 1, 0} = 1.0 = (2*2*1000)/(2^12);
* 1024 = (2^12)/(2*2)
*/
{{ 1, 0}, 1024},
/* dataformat +/-4g in 12-bit resolution;
* { 1, 9} = 1.9 = (2*4*1000)/(2^12);
* 512 = (2^12)/(2*4)
*/
{{ 1, 9}, 512},
/* dataformat +/-8g in 12-bit resolution;
* { 1, 0} = 1.0 = (2*8*1000)/(2^12);
* 1024 = (2^12)/(2*8)
*/
{{ 3, 9}, 256},
};
static struct data_resolution lis3dh_offset_resolution = {{15, 6}, 64};
/*--------------------read function----------------------------------*/
static int lis_i2c_read_block(struct i2c_client *client, u8 addr,
u8 *data, u8 len)
{
u8 beg = addr;
int err;
struct i2c_msg msgs[2] = { {0}, {0} };
mutex_lock(&lis3dh_i2c_mutex);
msgs[0].addr = client->addr;
msgs[0].flags = 0;
msgs[0].len = 1;
msgs[0].buf = &beg;
msgs[1].addr = client->addr;
msgs[1].flags = I2C_M_RD;
msgs[1].len = len;
msgs[1].buf = data;
if (!client) {
mutex_unlock(&lis3dh_i2c_mutex);
return -EINVAL;
} else if (len > C_I2C_FIFO_SIZE) {
ACC_LOG(" length %d exceeds %d\n", len, C_I2C_FIFO_SIZE);
mutex_unlock(&lis3dh_i2c_mutex);
return -EINVAL;
}
err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
/* ACC_LOG(" lis_i2c_read_block return value %d\n", err); */
if (err < 0) {
ACC_LOG("i2c_transfer error: (%d %p %d) %d\n", addr, data,
len, err);
err = -EIO;
} else
err = 0;
mutex_unlock(&lis3dh_i2c_mutex);
return err;
}
static int lis_i2c_write_block(struct i2c_client *client, u8 addr,
u8 *data, u8 len)
{
/*
* because address also occupies one byte,
* the maximum length for write is 7 bytes
*/
int err, idx, num;
char buf[C_I2C_FIFO_SIZE];
err = 0;
mutex_lock(&lis3dh_i2c_mutex);
if (!client) {
mutex_unlock(&lis3dh_i2c_mutex);
return -EINVAL;
} else if (len >= C_I2C_FIFO_SIZE) {
ACC_LOG(" length %d exceeds %d\n", len, C_I2C_FIFO_SIZE);
mutex_unlock(&lis3dh_i2c_mutex);
return -EINVAL;
}
num = 0;
buf[num++] = addr;
for (idx = 0; idx < len; idx++)
buf[num++] = data[idx];
err = i2c_master_send(client, buf, num);
if (err < 0) {
ACC_LOG("send command error!!\n");
mutex_unlock(&lis3dh_i2c_mutex);
return -EFAULT;
}
mutex_unlock(&lis3dh_i2c_mutex);
return err;
}
static void dumpReg(struct i2c_client *client)
{
int i = 0;
u8 addr = 0x20;
u8 regdata = 0;
for (i = 0; i < 3; i++) {
lis_i2c_read_block(client, addr, &regdata, 1);
ACC_LOG("Reg addr=%x regdata=%x\n", addr, regdata);
addr++;
}
}
/*--------------------ADXL power control function-----------------------*/
static void LIS3DH_power(struct acc_hw *hw, unsigned int on)
{
}
static int LIS3DH_SetDataResolution(struct lis3dh_i2c_data *obj)
{
int err;
u8 dat, reso;
err = lis_i2c_read_block(obj->client, LIS3DH_REG_CTL_REG4, &dat, 0x01);
if (err < 0) {
ACC_LOG("write data format fail!!\n");
return err;
}
/* the data_reso is combined by 3 bits: {FULL_RES, DATA_RANGE}*/
reso = (dat & 0x30)>>4;
if (reso >= 0x3)
reso = 0x2;
if (reso < ARRAY_SIZE(lis3dh_data_resolution)) {
obj->reso = &lis3dh_data_resolution[reso];
return 0;
} else
return -EINVAL;
}
static int LIS3DH_ReadData(struct i2c_client *client,
s16 data[LIS3DH_AXES_NUM])
{
struct lis3dh_i2c_data *priv = i2c_get_clientdata(client);
/* u8 addr = LIS3DH_REG_DATAX0; */
u8 buf[LIS3DH_DATA_LEN] = {0};
int err = 0;
if (client == NULL)
err = -EINVAL;
else {
if ((lis_i2c_read_block(client, LIS3DH_REG_OUT_X,
buf, 0x01)) < 0) {
ACC_LOG("read G sensor data register err!\n");
return -1;
}
if ((lis_i2c_read_block(client, LIS3DH_REG_OUT_X+1,
&buf[1], 0x01)) < 0) {
ACC_LOG("read G sensor data register err!\n");
return -1;
}
data[LIS3DH_AXIS_X] = (s16)((buf[0]+(buf[1]<<8))>>4);
if ((lis_i2c_read_block(client, LIS3DH_REG_OUT_Y,
&buf[2], 0x01)) < 0) {
ACC_LOG("read G sensor data register err!\n");
return -1;
}
if ((lis_i2c_read_block(client, LIS3DH_REG_OUT_Y+1,
&buf[3], 0x01)) < 0) {
ACC_LOG("read G sensor data register err!\n");
return -1;
}
data[LIS3DH_AXIS_Y] = (s16)((s16)(buf[2] + (buf[3]<<8))>>4);
if ((lis_i2c_read_block(client, LIS3DH_REG_OUT_Z,
&buf[4], 0x01)) < 0) {
ACC_LOG("read G sensor data register err!\n");
return -1;
}
if ((lis_i2c_read_block(client, LIS3DH_REG_OUT_Z+1,
&buf[5], 0x01)) < 0) {
ACC_LOG("read G sensor data register err!\n");
return -1;
}
data[LIS3DH_AXIS_Z] = (s16)((buf[4]+(buf[5]<<8))>>4);
/*
* ACC_LOG("[%08X %08X %08X %08x %08x %08x]\n",
* buf[0],buf[1],buf[2],buf[3],buf[4],buf[5]);
*/
data[LIS3DH_AXIS_X] &= 0xfff;
data[LIS3DH_AXIS_Y] &= 0xfff;
data[LIS3DH_AXIS_Z] &= 0xfff;
if (atomic_read(&priv->trace) & ADX_TRC_RAWDATA)
ACC_LOG("[%08X %08X %08X] => [%5d %5d %5d]\n",
data[LIS3DH_AXIS_X], data[LIS3DH_AXIS_Y],
data[LIS3DH_AXIS_Z], data[LIS3DH_AXIS_X],
data[LIS3DH_AXIS_Y], data[LIS3DH_AXIS_Z]);
if (data[LIS3DH_AXIS_X]&0x800) {
data[LIS3DH_AXIS_X] = ~data[LIS3DH_AXIS_X];
data[LIS3DH_AXIS_X] &= 0xfff;
data[LIS3DH_AXIS_X] += 1;
data[LIS3DH_AXIS_X] = -data[LIS3DH_AXIS_X];
}
if (data[LIS3DH_AXIS_Y]&0x800) {
data[LIS3DH_AXIS_Y] = ~data[LIS3DH_AXIS_Y];
data[LIS3DH_AXIS_Y] &= 0xfff;
data[LIS3DH_AXIS_Y] += 1;
data[LIS3DH_AXIS_Y] = -data[LIS3DH_AXIS_Y];
}
if (data[LIS3DH_AXIS_Z]&0x800) {
data[LIS3DH_AXIS_Z] = ~data[LIS3DH_AXIS_Z];
data[LIS3DH_AXIS_Z] &= 0xfff;
data[LIS3DH_AXIS_Z] += 1;
data[LIS3DH_AXIS_Z] = -data[LIS3DH_AXIS_Z];
}
if (atomic_read(&priv->trace) & ADX_TRC_RAWDATA) {
ACC_LOG("[%08X %08X %08X] => [%5d %5d %5d] after\n",
data[LIS3DH_AXIS_X], data[LIS3DH_AXIS_Y],
data[LIS3DH_AXIS_Z], data[LIS3DH_AXIS_X],
data[LIS3DH_AXIS_Y], data[LIS3DH_AXIS_Z]);
}
#ifdef CONFIG_LIS3DH_LOWPASS
if (atomic_read(&priv->filter)) {
if (atomic_read(&priv->fir_en) &&
!atomic_read(&priv->suspend)) {
int idx, firlen = atomic_read(&priv->firlen);
if (priv->fir.num < firlen) {
/* 0->LIS3DH_AXIS_X */
/* 1->LIS3DH_AXIS_Y */
/* 2->LIS3DH_AXIS_Z */
priv->fir.raw[priv->fir.num][0]
= data[LIS3DH_AXIS_X];
priv->fir.raw[priv->fir.num][1]
= data[LIS3DH_AXIS_Y];
priv->fir.raw[priv->fir.num][2]
= data[LIS3DH_AXIS_Z];
priv->fir.sum[LIS3DH_AXIS_X] +=
data[LIS3DH_AXIS_X];
priv->fir.sum[LIS3DH_AXIS_Y] +=
data[LIS3DH_AXIS_Y];
priv->fir.sum[LIS3DH_AXIS_Z] +=
data[LIS3DH_AXIS_Z];
if (atomic_read(&priv->trace) &
ADX_TRC_FILTER) {
ACC_LOG("[%2d][%5d %5d %5d]",
priv->fir.num,
priv->fir.raw[priv->fir.num][LIS3DH_AXIS_X],
priv->fir.raw[priv->fir.num][LIS3DH_AXIS_Y],
priv->fir.raw[priv->fir.num][LIS3DH_AXIS_Z]);
ACC_LOG(" => [%5d %5d %5d]\n",
priv->fir.sum[LIS3DH_AXIS_X],
priv->fir.sum[LIS3DH_AXIS_Y],
priv->fir.sum[LIS3DH_AXIS_Z]);
}
priv->fir.num++;
priv->fir.idx++;
} else {
idx = priv->fir.idx % firlen;
priv->fir.sum[LIS3DH_AXIS_X] -=
priv->fir.raw[idx][LIS3DH_AXIS_X];
priv->fir.sum[LIS3DH_AXIS_Y] -=
priv->fir.raw[idx][LIS3DH_AXIS_Y];
priv->fir.sum[LIS3DH_AXIS_Z] -=
priv->fir.raw[idx][LIS3DH_AXIS_Z];
priv->fir.raw[idx][LIS3DH_AXIS_X] =
data[LIS3DH_AXIS_X];
priv->fir.raw[idx][LIS3DH_AXIS_Y] =
data[LIS3DH_AXIS_Y];
priv->fir.raw[idx][LIS3DH_AXIS_Z] =
data[LIS3DH_AXIS_Z];
priv->fir.sum[LIS3DH_AXIS_X] +=
data[LIS3DH_AXIS_X];
priv->fir.sum[LIS3DH_AXIS_Y] +=
data[LIS3DH_AXIS_Y];
priv->fir.sum[LIS3DH_AXIS_Z] +=
data[LIS3DH_AXIS_Z];
priv->fir.idx++;
data[LIS3DH_AXIS_X] =
priv->fir.sum[LIS3DH_AXIS_X]/firlen;
data[LIS3DH_AXIS_Y] =
priv->fir.sum[LIS3DH_AXIS_Y]/firlen;
data[LIS3DH_AXIS_Z] =
priv->fir.sum[LIS3DH_AXIS_Z]/firlen;
if (atomic_read(&priv->trace) &
ADX_TRC_FILTER) {
ACC_LOG("[%2d][%5d %5d %5d]",
idx,
priv->fir.raw[idx][LIS3DH_AXIS_X],
priv->fir.raw[idx][LIS3DH_AXIS_Y],
priv->fir.raw[idx][LIS3DH_AXIS_Z]);
ACC_LOG(" => [%5d %5d %5d] : ",
priv->fir.sum[LIS3DH_AXIS_X],
priv->fir.sum[LIS3DH_AXIS_Y],
priv->fir.sum[LIS3DH_AXIS_Z]);
ACC_LOG("[%5d %5d %5d]\n",
data[LIS3DH_AXIS_X],
data[LIS3DH_AXIS_Y],
data[LIS3DH_AXIS_Z]);
}
}
}
}
#endif
}
return err;
}
static int LIS3DH_ResetCalibration(struct i2c_client *client)
{
struct lis3dh_i2c_data *obj = i2c_get_clientdata(client);
memset(obj->cali_sw, 0x00, sizeof(obj->cali_sw));
return 0;
}
static int LIS3DH_ReadCalibration(struct i2c_client *client,
int dat[LIS3DH_AXES_NUM])
{
struct lis3dh_i2c_data *obj = i2c_get_clientdata(client);
dat[obj->cvt.map[LIS3DH_AXIS_X]] =
obj->cvt.sign[LIS3DH_AXIS_X] *
obj->cali_sw[LIS3DH_AXIS_X];
dat[obj->cvt.map[LIS3DH_AXIS_Y]] =
obj->cvt.sign[LIS3DH_AXIS_Y] *
obj->cali_sw[LIS3DH_AXIS_Y];
dat[obj->cvt.map[LIS3DH_AXIS_Z]] =
obj->cvt.sign[LIS3DH_AXIS_Z] *
obj->cali_sw[LIS3DH_AXIS_Z];
return 0;
}
static int LIS3DH_WriteCalibration(struct i2c_client *client,
int dat[LIS3DH_AXES_NUM])
{
struct lis3dh_i2c_data *obj = i2c_get_clientdata(client);
int err = 0;
/* int cali[LIS3DH_AXES_NUM]; */
if (!obj || !dat) {
ACC_LOG("null ptr!!\n");
err = -EINVAL;
} else {
s16 cali[LIS3DH_AXES_NUM];
cali[obj->cvt.map[LIS3DH_AXIS_X]] =
obj->cvt.sign[LIS3DH_AXIS_X] *
obj->cali_sw[LIS3DH_AXIS_X];
cali[obj->cvt.map[LIS3DH_AXIS_Y]] =
obj->cvt.sign[LIS3DH_AXIS_Y] *
obj->cali_sw[LIS3DH_AXIS_Y];
cali[obj->cvt.map[LIS3DH_AXIS_Z]] =
obj->cvt.sign[LIS3DH_AXIS_Z] *
obj->cali_sw[LIS3DH_AXIS_Z];
cali[LIS3DH_AXIS_X] += dat[LIS3DH_AXIS_X];
cali[LIS3DH_AXIS_Y] += dat[LIS3DH_AXIS_Y];
cali[LIS3DH_AXIS_Z] += dat[LIS3DH_AXIS_Z];
obj->cali_sw[LIS3DH_AXIS_X] +=
obj->cvt.sign[LIS3DH_AXIS_X] *
dat[obj->cvt.map[LIS3DH_AXIS_X]];
obj->cali_sw[LIS3DH_AXIS_Y] +=
obj->cvt.sign[LIS3DH_AXIS_Y] *
dat[obj->cvt.map[LIS3DH_AXIS_Y]];
obj->cali_sw[LIS3DH_AXIS_Z] +=
obj->cvt.sign[LIS3DH_AXIS_Z] *
dat[obj->cvt.map[LIS3DH_AXIS_Z]];
}
return err;
}
static int LIS3DH_SetPowerMode(struct i2c_client *client,
bool enable)
{
u8 databuf[2];
int res = 0;
u8 addr = LIS3DH_REG_CTL_REG1;
struct lis3dh_i2c_data *obj = i2c_get_clientdata(client);
/*
* ACC_LOG("enter Sensor power status is sensor_power = %d\n",
* sensor_power);
*/
if (enable == sensor_power) {
ACC_LOG("Sensor power status is newest!\n");
return LIS3DH_SUCCESS;
}
if ((lis_i2c_read_block(client, addr, databuf, 0x01)) < 0) {
ACC_LOG("read power ctl register err!\n");
return LIS3DH_ERR_I2C;
}
if (enable)
databuf[0] &= ~LIS3DH_MEASURE_MODE;
else
databuf[0] |= LIS3DH_MEASURE_MODE;
res = lis_i2c_write_block(client, LIS3DH_REG_CTL_REG1,
databuf, 0x1);
if (res <= 0) {
ACC_LOG("set power mode failed!\n");
return LIS3DH_ERR_I2C;
} else if (atomic_read(&obj->trace) & ADX_TRC_INFO)
ACC_LOG("set power mode ok %d!\n", databuf[1]);
sensor_power = enable;
/*
* ACC_LOG("leave Sensor power status is sensor_power = %d\n",
* sensor_power);
*/
return LIS3DH_SUCCESS;
}
static int LIS3DH_SetDataFormat(struct i2c_client *client,
u8 dataformat)
{
struct lis3dh_i2c_data *obj = i2c_get_clientdata(client);
u8 databuf[10];
u8 addr = LIS3DH_REG_CTL_REG4;
int res = 0;
memset(databuf, 0, sizeof(u8) * 10);
if ((lis_i2c_read_block(client, addr, databuf, 0x01)) < 0) {
ACC_LOG("read reg_ctl_reg1 register err!\n");
return LIS3DH_ERR_I2C;
}
databuf[0] &= ~0x30;
databuf[0] |= dataformat;
res = lis_i2c_write_block(client, LIS3DH_REG_CTL_REG4,
databuf, 0x1);
if (res < 0)
return LIS3DH_ERR_I2C;
return LIS3DH_SetDataResolution(obj);
}
static int LIS3DH_SetBWRate(struct i2c_client *client, u8 bwrate)
{
u8 databuf[10];
u8 addr = LIS3DH_REG_CTL_REG1;
int res = 0;
memset(databuf, 0, sizeof(u8) * 10);
if ((lis_i2c_read_block(client, addr, databuf, 0x01)) < 0) {
ACC_LOG("read reg_ctl_reg1 register err!\n");
return LIS3DH_ERR_I2C;
}
databuf[0] &= ~0xF0;
databuf[0] |= bwrate;
res = lis_i2c_write_block(client, LIS3DH_REG_CTL_REG1,
databuf, 0x1);
if (res < 0)
return LIS3DH_ERR_I2C;
return LIS3DH_SUCCESS;
}
/* enalbe data ready interrupt */
static int LIS3DH_SetIntEnable(struct i2c_client *client,
u8 intenable)
{
u8 databuf[2];
u8 addr = LIS3DH_REG_CTL_REG3;
int res = 0;
memset(databuf, 0, sizeof(u8) * 2);
if ((lis_i2c_read_block(client, addr, databuf, 0x01)) < 0) {
ACC_LOG("read reg_ctl_reg1 register err!\n");
return LIS3DH_ERR_I2C;
}
databuf[0] = 0x00;
res = lis_i2c_write_block(client, LIS3DH_REG_CTL_REG3,
databuf, 0x01);
if (res < 0)
return LIS3DH_ERR_I2C;
return LIS3DH_SUCCESS;
}
static int LIS3DH_Init(struct i2c_client *client, int reset_cali)
{
struct lis3dh_i2c_data *obj = i2c_get_clientdata(client);
int res = 0;
u8 databuf[2] = {0, 0};
#if 0
res = LIS3DH_CheckDeviceID(client);
if (res != LIS3DH_SUCCESS)
return res;
#endif
/* first clear reg1 */
databuf[0] = 0x0f;
res = lis_i2c_write_block(client, LIS3DH_REG_CTL_REG1, databuf, 0x01);
if (res < 0) {
ACC_LOG("%s step 1!\n", __func__);
return res;
}
res = LIS3DH_SetBWRate(client, LIS3DH_BW_100HZ);
if (res < 0) {
ACC_LOG("%s step 2!\n", __func__);
return res;
}
res = LIS3DH_SetDataFormat(client, LIS3DH_RANGE_2G);
if (res < 0) {
ACC_LOG("%s step 3!\n", __func__);
return res;
}
gsensor_gain.x = gsensor_gain.y = gsensor_gain.z =
obj->reso->sensitivity;
res = LIS3DH_SetIntEnable(client, false);
if (res < 0) {
ACC_LOG("%s step 4!\n", __func__);
return res;
}
res = LIS3DH_SetPowerMode(client, enable_status);
if (res < 0) {
ACC_LOG("%s step 5!\n", __func__);
return res;
}
/* reset calibration only in power on */
if (reset_cali != 0) {
res = LIS3DH_ResetCalibration(client);
if (res < 0)
return res;
}
#ifdef CONFIG_LIS3DH_LOWPASS
memset(&obj->fir, 0x00, sizeof(obj->fir));
#endif
return LIS3DH_SUCCESS;
}
static int LIS3DH_ReadChipInfo(struct i2c_client *client,
char *buf, int bufsize)
{
u8 databuf[10];
memset(databuf, 0, sizeof(u8) * 10);
if ((buf == NULL) || (bufsize <= 30))
return -1;
if (client == NULL) {
*buf = 0;
return -2;
}
sprintf(buf, "LIS3DH Chip");
return 0;
}
static int LIS3DH_ReadSensorData(struct i2c_client *client,
char *buf, int bufsize)
{
struct lis3dh_i2c_data *obj =
(struct lis3dh_i2c_data *)i2c_get_clientdata(client);
u8 databuf[20];
int acc[LIS3DH_AXES_NUM];
int res = 0;
memset(databuf, 0, sizeof(u8) * 10);
if (buf == NULL)
return -1;
if (client == NULL) {
*buf = 0;
return -2;
}
if (sensor_suspend == 1)
/* ACC_LOG("sensor in suspend read not data!\n"); */
return 0;
#if 0
if (sensor_power == FALSE) {
res = LIS3DH_SetPowerMode(client, true);
if (res)
ACC_LOG("Power on lis3dh error %d!\n", res);
msleep(20);
}
#endif
res = LIS3DH_ReadData(client, obj->data);
if (!res) {
obj->data[LIS3DH_AXIS_X] += obj->cali_sw[LIS3DH_AXIS_X];
obj->data[LIS3DH_AXIS_Y] += obj->cali_sw[LIS3DH_AXIS_Y];
obj->data[LIS3DH_AXIS_Z] += obj->cali_sw[LIS3DH_AXIS_Z];
/* remap coordinate */
acc[obj->cvt.map[LIS3DH_AXIS_X]] =
obj->cvt.sign[LIS3DH_AXIS_X] * obj->data[LIS3DH_AXIS_X];
acc[obj->cvt.map[LIS3DH_AXIS_Y]] =
obj->cvt.sign[LIS3DH_AXIS_Y] * obj->data[LIS3DH_AXIS_Y];
acc[obj->cvt.map[LIS3DH_AXIS_Z]] =
obj->cvt.sign[LIS3DH_AXIS_Z] * obj->data[LIS3DH_AXIS_Z];
/* ACC_LOG("Mapped gsensor data: %d, %d, %d!\n",
* acc[LIS3DH_AXIS_X], acc[LIS3DH_AXIS_Y],
* acc[LIS3DH_AXIS_Z]);
*/
/* Out put the mg */
acc[LIS3DH_AXIS_X] = acc[LIS3DH_AXIS_X] *
GRAVITY_EARTH_1000 / obj->reso->sensitivity;
acc[LIS3DH_AXIS_Y] = acc[LIS3DH_AXIS_Y] *
GRAVITY_EARTH_1000 / obj->reso->sensitivity;
acc[LIS3DH_AXIS_Z] = acc[LIS3DH_AXIS_Z] *
GRAVITY_EARTH_1000 / obj->reso->sensitivity;
sprintf(buf, "%04x %04x %04x", acc[LIS3DH_AXIS_X],
acc[LIS3DH_AXIS_Y], acc[LIS3DH_AXIS_Z]);
if (atomic_read(&obj->trace) & ADX_TRC_IOCTL) {
ACC_LOG("gsensor data: %s!\n", buf);
dumpReg(client);
}
} else {
ACC_LOG("I2C error: ret value=%d", res);
return -3;
}
return 0;
}
static int LIS3DH_ReadRawData(struct i2c_client *client, char *buf)
{
struct lis3dh_i2c_data *obj =
(struct lis3dh_i2c_data *)i2c_get_clientdata(client);
int res = 0;
if (!buf || !client)
return -EINVAL;
res = LIS3DH_ReadData(client, obj->data);
if (!res)
sprintf(buf, "%04x %04x %04x", obj->data[LIS3DH_AXIS_X],
obj->data[LIS3DH_AXIS_Y], obj->data[LIS3DH_AXIS_Z]);
else {
ACC_LOG("I2C error: ret value=%d", res);
return -EIO;
}
return 0;
}
static ssize_t show_chipinfo_value(struct device_driver *ddri,
char *buf)
{
struct i2c_client *client = lis3dh_i2c_client;
char strbuf[LIS3DH_BUFSIZE];
if (client == NULL) {
ACC_LOG("i2c client is null!!\n");
return 0;
}
LIS3DH_ReadChipInfo(client, strbuf, LIS3DH_BUFSIZE);
return snprintf(buf, PAGE_SIZE, "%s\n", strbuf);
}
static ssize_t show_sensordata_value(struct device_driver *ddri,
char *buf)
{
struct i2c_client *client = lis3dh_i2c_client;
char strbuf[LIS3DH_BUFSIZE];
if (client == NULL) {
ACC_LOG("i2c client is null!!\n");
return 0;
}
LIS3DH_ReadSensorData(client, strbuf, LIS3DH_BUFSIZE);
return snprintf(buf, PAGE_SIZE, "%s\n", strbuf);
}
static ssize_t show_cali_value(struct device_driver *ddri, char *buf)
{
struct i2c_client *client = lis3dh_i2c_client;
struct lis3dh_i2c_data *obj;
int err, len, mul;
int tmp[LIS3DH_AXES_NUM];
len = 0;
if (client == NULL) {
ACC_LOG("i2c client is null!!\n");
return 0;
}
obj = i2c_get_clientdata(client);
err = LIS3DH_ReadCalibration(client, tmp);
if (!err) {
mul = obj->reso->sensitivity /
lis3dh_offset_resolution.sensitivity;
len += snprintf(buf+len, PAGE_SIZE-len,
"[HW ][%d] (%+3d, %+3d, %+3d) : (0x%02X, 0x%02X, 0x%02X)\n",
mul, obj->offset[LIS3DH_AXIS_X],
obj->offset[LIS3DH_AXIS_Y],
obj->offset[LIS3DH_AXIS_Z],
obj->offset[LIS3DH_AXIS_X],
obj->offset[LIS3DH_AXIS_Y],
obj->offset[LIS3DH_AXIS_Z]);
len += snprintf(buf+len, PAGE_SIZE-len,
"[SW ][%d] (%+3d, %+3d, %+3d)\n", 1,
obj->cali_sw[LIS3DH_AXIS_X],
obj->cali_sw[LIS3DH_AXIS_Y],
obj->cali_sw[LIS3DH_AXIS_Z]);
len += snprintf(buf+len, PAGE_SIZE-len,
"[ALL] (%+3d, %+3d, %+3d) : (%+3d, %+3d, %+3d)\n",
obj->offset[LIS3DH_AXIS_X] * mul +
obj->cali_sw[LIS3DH_AXIS_X],
obj->offset[LIS3DH_AXIS_Y] * mul +
obj->cali_sw[LIS3DH_AXIS_Y],
obj->offset[LIS3DH_AXIS_Z] * mul +
obj->cali_sw[LIS3DH_AXIS_Z],
tmp[LIS3DH_AXIS_X],
tmp[LIS3DH_AXIS_Y],
tmp[LIS3DH_AXIS_Z]);
return len;
} else
return -EINVAL;
}
static ssize_t store_cali_value(struct device_driver *ddri,
const char *buf, size_t count)
{
struct i2c_client *client = lis3dh_i2c_client;
int err, x, y, z;
int dat[LIS3DH_AXES_NUM];
if (!strncmp(buf, "rst", 3)) {
err = LIS3DH_ResetCalibration(client);
if (err)
ACC_LOG("reset offset err = %d\n", err);
} else if (sscanf(buf, "0x%02X 0x%02X 0x%02X",
&x, &y, &z) == 3) {
dat[LIS3DH_AXIS_X] = x;
dat[LIS3DH_AXIS_Y] = y;
dat[LIS3DH_AXIS_Z] = z;
err = LIS3DH_WriteCalibration(client, dat);
if (err)
ACC_LOG("write calibration err = %d\n", err);
} else
ACC_LOG("invalid format\n");
return count;
}
static ssize_t show_power_status(struct device_driver *ddri, char *buf)
{
struct i2c_client *client = lis3dh_i2c_client;
struct lis3dh_i2c_data *obj;
u8 data;
if (client == NULL) {
ACC_LOG("i2c client is null!!\n");
return 0;
}
obj = i2c_get_clientdata(client);
lis_i2c_read_block(client, LIS3DH_REG_CTL_REG1, &data, 0x01);
return snprintf(buf, PAGE_SIZE, "%x\n", data);
}
static ssize_t show_firlen_value(struct device_driver *ddri, char *buf)
{
#ifdef CONFIG_LIS3DH_LOWPASS
struct i2c_client *client = lis3dh_i2c_client;
struct lis3dh_i2c_data *obj = i2c_get_clientdata(client);
if (atomic_read(&obj->firlen)) {
int idx, len = atomic_read(&obj->firlen);
ACC_LOG("len = %2d, idx = %2d\n",
obj->fir.num, obj->fir.idx);
for (idx = 0; idx < len; idx++)
ACC_LOG("[%5d %5d %5d]\n",
obj->fir.raw[idx][LIS3DH_AXIS_X],
obj->fir.raw[idx][LIS3DH_AXIS_Y],
obj->fir.raw[idx][LIS3DH_AXIS_Z]);
ACC_LOG("sum = [%5d %5d %5d]\n",
obj->fir.sum[LIS3DH_AXIS_X],
obj->fir.sum[LIS3DH_AXIS_Y],
obj->fir.sum[LIS3DH_AXIS_Z]);
ACC_LOG("avg = [%5d %5d %5d]\n",
obj->fir.sum[LIS3DH_AXIS_X]/len,
obj->fir.sum[LIS3DH_AXIS_Y]/len,
obj->fir.sum[LIS3DH_AXIS_Z]/len);
}
return snprintf(buf, PAGE_SIZE, "%d\n",
atomic_read(&obj->firlen));
#else
return snprintf(buf, PAGE_SIZE, "not support\n");
#endif
}
static ssize_t store_firlen_value(struct device_driver *ddri,
const char *buf, size_t count)
{
#ifdef CONFIG_LIS3DH_LOWPASS
struct i2c_client *client = lis3dh_i2c_client;
struct lis3dh_i2c_data *obj = i2c_get_clientdata(client);
int firlen, err;
err = kstrtoint(buf, 10, &firlen);
if (err)
ACC_LOG("invallid format\n");
else if (firlen > C_MAX_FIR_LENGTH)
ACC_LOG("exceeds maximum filter length\n");
else {
atomic_set(&obj->firlen, firlen);
if (firlen == 0)
atomic_set(&obj->fir_en, 0);
else {
memset(&obj->fir, 0x00, sizeof(obj->fir));
atomic_set(&obj->fir_en, 1);
}
}
#endif
return count;
}
static ssize_t show_trace_value(struct device_driver *ddri,
char *buf)
{
ssize_t res;
struct lis3dh_i2c_data *obj = obj_i2c_data;
if (obj == NULL) {
ACC_LOG("i2c_data obj is null!!\n");
return 0;
}
res = snprintf(buf, PAGE_SIZE, "0x%04X\n",
atomic_read(&obj->trace));
return res;
}
static ssize_t store_trace_value(struct device_driver *ddri,
const char *buf, size_t count)
{
struct lis3dh_i2c_data *obj = obj_i2c_data;
int trace;
if (obj == NULL) {
ACC_LOG("i2c_data obj is null!!\n");
return 0;
}
if (sscanf(buf, "0x%x", &trace) == 1)
atomic_set(&obj->trace, trace);
else
ACC_LOG("invalid content: %s, length = %d\n",
buf, (int)count);
return count;
}
static ssize_t show_status_value(struct device_driver *ddri,
char *buf)
{
ssize_t len = 0;
struct lis3dh_i2c_data *obj = obj_i2c_data;
if (obj == NULL) {
ACC_LOG("i2c_data obj is null!!\n");
return 0;
}
if (obj->hw)
len += snprintf(buf+len, PAGE_SIZE-len,
"CUST: %d %d (%d %d)\n",
obj->hw->i2c_num, obj->hw->direction,
obj->hw->power_id, obj->hw->power_vol);
else
len += snprintf(buf+len, PAGE_SIZE-len, "CUST: NULL\n");
return len;
}
static DRIVER_ATTR(chipinfo, 0444, show_chipinfo_value, NULL);
static DRIVER_ATTR(sensordata, 0444, show_sensordata_value, NULL);
static DRIVER_ATTR(cali, 0644, show_cali_value, store_cali_value);
static DRIVER_ATTR(power, 0444, show_power_status, NULL);
static DRIVER_ATTR(firlen, 0644, show_firlen_value, store_firlen_value);
static DRIVER_ATTR(trace, 0644, show_trace_value, store_trace_value);
static DRIVER_ATTR(status, 0444, show_status_value, NULL);
static struct driver_attribute *lis3dh_attr_list[] = {
&driver_attr_chipinfo, /*chip information*/
&driver_attr_sensordata, /*dump sensor data*/
&driver_attr_cali, /*show calibration data*/
&driver_attr_power, /*show power reg*/
&driver_attr_firlen, /*filter length: 0: disable, others: enable*/
&driver_attr_trace, /*trace log*/
&driver_attr_status,
};
static int lis3dh_create_attr(struct device_driver *driver)
{
int idx, err = 0;
int num = (int)(ARRAY_SIZE(lis3dh_attr_list));
if (driver == NULL)
return -EINVAL;
for (idx = 0; idx < num; idx++) {
err = driver_create_file(driver, lis3dh_attr_list[idx]);
if (err) {
ACC_LOG("driver_create_file (%s) = %d\n",
lis3dh_attr_list[idx]->attr.name, err);
break;
}
}
return err;
}
static int lis3dh_delete_attr(struct device_driver *driver)
{
int idx, err = 0;
int num = (int)(ARRAY_SIZE(lis3dh_attr_list));
if (driver == NULL)
return -EINVAL;
for (idx = 0; idx < num; idx++)
driver_remove_file(driver, lis3dh_attr_list[idx]);
return err;
}
int lis3dh_operate(void *self, uint32_t command,
void *buff_in, int size_in, void *buff_out,
int size_out, int *actualout)
{
int err = 0;
int value, sample_delay;
struct lis3dh_i2c_data *priv = (struct lis3dh_i2c_data *)self;
struct hwm_sensor_data *gsensor_data;
char buff[LIS3DH_BUFSIZE];
switch (command) {
case SENSOR_DELAY:
if ((buff_in == NULL) || (size_in < sizeof(int))) {
ACC_LOG("Set delay parameter error!\n");
err = -EINVAL;
} else {
value = *(int *)buff_in;
if (value <= 5)
sample_delay = LIS3DH_BW_200HZ;
else if (value <= 10)
sample_delay = LIS3DH_BW_100HZ;
else
sample_delay = LIS3DH_BW_50HZ;
mutex_lock(&lis3dh_op_mutex);
err = LIS3DH_SetBWRate(priv->client, sample_delay);
if (err != LIS3DH_SUCCESS)/* 0x2C->BW=100Hz */
ACC_LOG("Set delay parameter error!\n");
mutex_unlock(&lis3dh_op_mutex);
if (value >= 50)
atomic_set(&priv->filter, 0);
else {
priv->fir.num = 0;
priv->fir.idx = 0;
priv->fir.sum[LIS3DH_AXIS_X] = 0;
priv->fir.sum[LIS3DH_AXIS_Y] = 0;
priv->fir.sum[LIS3DH_AXIS_Z] = 0;
atomic_set(&priv->filter, 1);
}
}
break;
case SENSOR_ENABLE:
if ((buff_in == NULL) || (size_in < sizeof(int))) {
ACC_LOG("Enable sensor parameter error!\n");
err = -EINVAL;
} else {
value = *(int *)buff_in;
mutex_lock(&lis3dh_op_mutex);
ACC_LOG("Gsensor enable = %d, power = %d\n",
value, sensor_power);
if (((value == 0) && (sensor_power == false)) ||
((value == 1) && (sensor_power == true))) {
enable_status = sensor_power;
ACC_LOG("Gsensor device have updated!\n");
} else {
enable_status = !sensor_power;
err = LIS3DH_SetPowerMode(priv->client,
!sensor_power);
ACC_LOG("Gsensor not suspend, enable=%d\n",
enable_status);
}
mutex_unlock(&lis3dh_op_mutex);
}
break;
case SENSOR_GET_DATA:
if ((buff_out == NULL) ||
(size_out < sizeof(struct hwm_sensor_data))) {
ACC_LOG("get sensor data parameter error!\n");
err = -EINVAL;
} else {
mutex_lock(&lis3dh_op_mutex);
gsensor_data = (struct hwm_sensor_data *)buff_out;
LIS3DH_ReadSensorData(priv->client, buff,
LIS3DH_BUFSIZE);
if (sscanf(buff, "%x %x %x",
&gsensor_data->values[0],
&gsensor_data->values[1],
&gsensor_data->values[2]) != 3)
err = -EINVAL;
gsensor_data->status = SENSOR_STATUS_ACCURACY_MEDIUM;
gsensor_data->value_divide = 1000;
mutex_unlock(&lis3dh_op_mutex);
}
break;
default:
ACC_LOG("gsensor operate function no this parameter %d!\n",
command);
err = -1;
break;
}
return err;
}
static int lis3dh_open(struct inode *inode, struct file *file)
{
file->private_data = lis3dh_i2c_client;
if (file->private_data == NULL) {
ACC_LOG("null pointer!!\n");
return -EINVAL;
}
return nonseekable_open(inode, file);
}
static int lis3dh_release(struct inode *inode, struct file *file)
{
file->private_data = NULL;
return 0;
}
#ifdef CONFIG_COMPAT
static long lis3dh_compat_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
long err = 0;
void __user *arg32 = compat_ptr(arg);
if (!file->f_op || !file->f_op->unlocked_ioctl)
return -ENOTTY;
switch (cmd) {
case COMPAT_GSENSOR_IOCTL_READ_SENSORDATA:
if (arg32 == NULL) {
err = -EINVAL;
break;
}
err = file->f_op->unlocked_ioctl(file,
GSENSOR_IOCTL_READ_SENSORDATA, (unsigned long)arg32);
if (err) {
ACC_LOG("GSENSOR_IOCTL_READ_SENSORDATA failed.");
return err;
}
break;
case COMPAT_GSENSOR_IOCTL_SET_CALI:
if (arg32 == NULL) {
err = -EINVAL;
break;
}
err = file->f_op->unlocked_ioctl(file,
GSENSOR_IOCTL_SET_CALI, (unsigned long)arg32);
if (err) {
ACC_LOG("GSENSOR_IOCTL_SET_CALI failed.");
return err;
}
break;
case COMPAT_GSENSOR_IOCTL_GET_CALI:
if (arg32 == NULL) {
err = -EINVAL;
break;
}
err = file->f_op->unlocked_ioctl(file,
GSENSOR_IOCTL_GET_CALI, (unsigned long)arg32);
if (err) {
ACC_LOG("GSENSOR_IOCTL_GET_CALI failed.");
return err;
}
break;
case COMPAT_GSENSOR_IOCTL_CLR_CALI:
if (arg32 == NULL) {
err = -EINVAL;
break;
}
err = file->f_op->unlocked_ioctl(file,
GSENSOR_IOCTL_CLR_CALI, (unsigned long)arg32);
if (err) {
ACC_LOG("GSENSOR_IOCTL_CLR_CALI failed.");
return err;
}
break;
default:
ACC_LOG("unknown IOCTL: 0x%08x\n", cmd);
err = -ENOIOCTLCMD;
break;
}
return err;
}
#endif
static long lis3dh_unlocked_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct i2c_client *client = (struct i2c_client *)file->private_data;
struct lis3dh_i2c_data *obj =
(struct lis3dh_i2c_data *)i2c_get_clientdata(client);
char strbuf[LIS3DH_BUFSIZE];
void __user *data;
struct SENSOR_DATA sensor_data;
long err = 0;
int cali[3];
if (_IOC_DIR(cmd) & _IOC_READ)
err = !access_ok(VERIFY_WRITE, (void __user *)arg,
_IOC_SIZE(cmd));
else if (_IOC_DIR(cmd) & _IOC_WRITE)
err = !access_ok(VERIFY_READ, (void __user *)arg,
_IOC_SIZE(cmd));
if (err) {
ACC_LOG("access error: %08X, (%2d, %2d)\n", cmd,
_IOC_DIR(cmd), _IOC_SIZE(cmd));
return -EFAULT;
}
switch (cmd) {
case GSENSOR_IOCTL_INIT:
LIS3DH_Init(client, 0);
break;
case GSENSOR_IOCTL_READ_CHIPINFO:
data = (void __user *) arg;
if (data == NULL) {
err = -EINVAL;
break;
}
LIS3DH_ReadChipInfo(client, strbuf, LIS3DH_BUFSIZE);
if (copy_to_user(data, strbuf, strlen(strbuf)+1)) {
err = -EFAULT;
break;
}
break;
case GSENSOR_IOCTL_READ_SENSORDATA:
data = (void __user *) arg;
if (data == NULL) {
err = -EINVAL;
break;
}
LIS3DH_SetPowerMode(client, true);
LIS3DH_ReadSensorData(client, strbuf, LIS3DH_BUFSIZE);
if (copy_to_user(data, strbuf, strlen(strbuf)+1)) {
err = -EFAULT;
break;
}
break;
case GSENSOR_IOCTL_READ_GAIN:
data = (void __user *) arg;
if (data == NULL) {
err = -EINVAL;
break;
}
if (copy_to_user(data, &gsensor_gain,
sizeof(struct GSENSOR_VECTOR3D))) {
err = -EFAULT;
break;
}
break;
case GSENSOR_IOCTL_READ_OFFSET:
data = (void __user *) arg;
if (data == NULL) {
err = -EINVAL;
break;
}
if (copy_to_user(data, &gsensor_offset,
sizeof(struct GSENSOR_VECTOR3D))) {
err = -EFAULT;
break;
}
break;
case GSENSOR_IOCTL_READ_RAW_DATA:
data = (void __user *) arg;
if (data == NULL) {
err = -EINVAL;
break;
}
LIS3DH_ReadRawData(client, strbuf);
if (copy_to_user(data, &strbuf, strlen(strbuf)+1)) {
err = -EFAULT;
break;
}
break;
case GSENSOR_IOCTL_SET_CALI:
data = (void __user *)arg;
if (data == NULL) {
err = -EINVAL;
break;
}
if (copy_from_user(&sensor_data, data, sizeof(sensor_data))) {
err = -EFAULT;
break;
}
if (atomic_read(&obj->suspend)) {
ACC_LOG("Perform calibration in suspend state!!\n");
err = -EINVAL;
} else {
cali[LIS3DH_AXIS_X] = sensor_data.x *
obj->reso->sensitivity / GRAVITY_EARTH_1000;
cali[LIS3DH_AXIS_Y] = sensor_data.y *
obj->reso->sensitivity / GRAVITY_EARTH_1000;
cali[LIS3DH_AXIS_Z] = sensor_data.z *
obj->reso->sensitivity / GRAVITY_EARTH_1000;
err = LIS3DH_WriteCalibration(client, cali);
}
break;
case GSENSOR_IOCTL_CLR_CALI:
err = LIS3DH_ResetCalibration(client);
break;
case GSENSOR_IOCTL_GET_CALI:
data = (void __user *)arg;
if (data == NULL) {
err = -EINVAL;
break;
}
err = LIS3DH_ReadCalibration(client, cali);
if (err)
break;
sensor_data.x = cali[LIS3DH_AXIS_X] *
GRAVITY_EARTH_1000 / obj->reso->sensitivity;
sensor_data.y = cali[LIS3DH_AXIS_Y] *
GRAVITY_EARTH_1000 / obj->reso->sensitivity;
sensor_data.z = cali[LIS3DH_AXIS_Z] *
GRAVITY_EARTH_1000 / obj->reso->sensitivity;
if (copy_to_user(data, &sensor_data, sizeof(sensor_data))) {
err = -EFAULT;
break;
}
break;
default:
ACC_LOG("unknown IOCTL: 0x%08x\n", cmd);
err = -ENOIOCTLCMD;
break;
}
return err;
}
static const struct file_operations lis3dh_fops = {
.owner = THIS_MODULE,
.open = lis3dh_open,
.release = lis3dh_release,
.unlocked_ioctl = lis3dh_unlocked_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = lis3dh_compat_ioctl,
#endif
};
static struct miscdevice lis3dh_device = {
.minor = MISC_DYNAMIC_MINOR,
.name = "gsensor",
.fops = &lis3dh_fops,
};
#ifdef CONFIG_PM_SLEEP
static int lis3dh_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct lis3dh_i2c_data *obj = i2c_get_clientdata(client);
int err = 0;
mutex_lock(&lis3dh_op_mutex);
if (obj == NULL) {
mutex_unlock(&lis3dh_op_mutex);
ACC_LOG("null pointer!!\n");
return -EINVAL;
}
/* read old data */
err = LIS3DH_SetPowerMode(obj->client, false);
if (err) {
ACC_LOG("write power control fail!!\n");
mutex_unlock(&lis3dh_op_mutex);
return err;
}
atomic_set(&obj->suspend, 1);
LIS3DH_power(obj->hw, 0);
sensor_suspend = 1;
mutex_unlock(&lis3dh_op_mutex);
return err;
}
static int lis3dh_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct lis3dh_i2c_data *obj = i2c_get_clientdata(client);
int err;
mutex_lock(&lis3dh_op_mutex);
if (obj == NULL) {
mutex_unlock(&lis3dh_op_mutex);
ACC_LOG("null pointer!!\n");
return -EINVAL;
}
LIS3DH_power(obj->hw, 1);
err = LIS3DH_Init(client, 0);
if (err) {
mutex_unlock(&lis3dh_op_mutex);
ACC_LOG("initialize client fail!!\n");
return err;
}
atomic_set(&obj->suspend, 0);
sensor_suspend = 0;
mutex_unlock(&lis3dh_op_mutex);
return 0;
}
#endif /*CONFIG_PM_SLEEP*/
static int lis3dh_i2c_detect(struct i2c_client *client,
struct i2c_board_info *info)
{
strcpy(info->type, LIS3DH_DEV_NAME);
return 0;
}
/* if use this typ of enable,
* Gsensor should report inputEvent(x, y, z, stats, div) to HAL
*/
static int lis3dh_open_report_data(int open)
{
/*
* should queue work to report event
* if is_report_input_direct=true
*/
return 0;
}
/*
* if use this type of enable,
* Gsensor only enabled but not report inputEvent to HAL
*/
static int lis3dh_enable_nodata(int en)
{
int res = 0;
bool power = false;
if (en == 1)
power = true;
if (en == 0)
power = false;
res = LIS3DH_SetPowerMode(obj_i2c_data->client, power);
if (res != LIS3DH_SUCCESS) {
ACC_LOG("LIS3DH_SetPowerMode fail!\n");
return -1;
}
ACC_LOG("%s OK!\n", __func__);
return 0;
}
static int lis3dh_batch(int flag, int64_t samplingPeriodNs,
int64_t maxBatchReportLatencyNs)
{
int value = 0;
value = (int)samplingPeriodNs/1000/1000;
ACC_LOG("%s(%d), chip only use 1024HZ\n", __func__, value);
return 0;
}
static int lis3dh_flush(void)
{
return acc_flush_report();
}
static int lis3dh_set_delay(u64 ns)
{
int value = 0;
int sample_delay = 0;
int err;
value = (int)ns/1000/1000;
if (value <= 5)
sample_delay = LIS3DH_BW_200HZ;
else if (value <= 10)
sample_delay = LIS3DH_BW_100HZ;
else
sample_delay = LIS3DH_BW_50HZ;
mutex_lock(&lis3dh_op_mutex);
err = LIS3DH_SetBWRate(obj_i2c_data->client, sample_delay);
if (err != LIS3DH_SUCCESS)/* 0x2C->BW=100Hz */
ACC_LOG("Set delay parameter error!\n");
mutex_unlock(&lis3dh_op_mutex);
if (value >= 50)
atomic_set(&obj_i2c_data->filter, 0);
else {
obj_i2c_data->fir.num = 0;
obj_i2c_data->fir.idx = 0;
obj_i2c_data->fir.sum[LIS3DH_AXIS_X] = 0;
obj_i2c_data->fir.sum[LIS3DH_AXIS_Y] = 0;
obj_i2c_data->fir.sum[LIS3DH_AXIS_Z] = 0;
atomic_set(&obj_i2c_data->filter, 1);
}
ACC_LOG("%s (%d)\n", __func__, value);
return 0;
}
static int lis3dh_get_data(int *x, int *y, int *z, int *status)
{
char buff[LIS3DH_BUFSIZE];
LIS3DH_ReadSensorData(obj_i2c_data->client, buff, LIS3DH_BUFSIZE);
if (sscanf(buff, "%x %x %x", x, y, z) != 3)
return -1;
*status = SENSOR_STATUS_ACCURACY_MEDIUM;
return 0;
}
static int lis3dh_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct i2c_client *new_client;
struct lis3dh_i2c_data *obj;
/* struct acc_drv_obj sobj; */
int err = 0;
int retry = 0;
struct acc_control_path ctl = {0};
struct acc_data_path data = {0};
err = get_accel_dts_func(client->dev.of_node, hw);
if (err < 0) {
ACC_LOG("get cust_baro dts info fail\n");
goto exit;
}
obj = kzalloc(sizeof(*obj), GFP_KERNEL);
if (!obj) {
err = -ENOMEM;
goto exit;
}
memset(obj, 0, sizeof(struct lis3dh_i2c_data));
obj->hw = hw;
err = hwmsen_get_convert(obj->hw->direction, &obj->cvt);
if (err) {
ACC_LOG("invalid direction: %d\n", obj->hw->direction);
goto exit;
}
obj_i2c_data = obj;
obj->client = client;
new_client = obj->client;
i2c_set_clientdata(new_client, obj);
atomic_set(&obj->trace, 0);
atomic_set(&obj->suspend, 0);
#ifdef CONFIG_LIS3DH_LOWPASS
if (obj->hw->firlen > C_MAX_FIR_LENGTH)
atomic_set(&obj->firlen, C_MAX_FIR_LENGTH);
else
atomic_set(&obj->firlen, obj->hw->firlen);
if (atomic_read(&obj->firlen) > 0)
atomic_set(&obj->fir_en, 1);
#endif
lis3dh_i2c_client = new_client;
for (retry = 0; retry < 3; retry++) {
err = LIS3DH_Init(new_client, 1);
if (err) {
ACC_LOG("lis3dh_device init cilent fail time: %d\n",
retry);
continue;
}
}
if (err != 0)
goto exit_init_failed;
err = misc_register(&lis3dh_device);
if (err) {
ACC_LOG("lis3dh_device register failed\n");
goto exit_misc_device_register_failed;
}
err = lis3dh_create_attr(
&(lis3dh_init_info.platform_diver_addr->driver));
if (err) {
ACC_LOG("create attribute err = %d\n", err);
goto exit_create_attr_failed;
}
ctl.open_report_data = lis3dh_open_report_data;
ctl.enable_nodata = lis3dh_enable_nodata;
ctl.batch = lis3dh_batch;
ctl.flush = lis3dh_flush;
ctl.set_delay = lis3dh_set_delay;
ctl.is_report_input_direct = false;
err = acc_register_control_path(&ctl);
if (err) {
ACC_LOG("register acc control path err\n");
goto exit_kfree;
}
data.get_data = lis3dh_get_data;
data.vender_div = 1000;
err = acc_register_data_path(&data);
if (err) {
ACC_LOG("register acc data path err\n");
goto exit_kfree;
}
#ifdef USE_EARLY_SUSPEND
obj->early_drv.level = EARLY_SUSPEND_LEVEL_STOP_DRAWING - 2,
obj->early_drv.suspend = lis3dh_early_suspend,
obj->early_drv.resume = lis3dh_late_resume,
register_early_suspend(&obj->early_drv);
#endif
ACC_LOG("%s: OK\n", __func__);
lis3dh_init_flag = 0;
return 0;
exit_create_attr_failed:
misc_deregister(&lis3dh_device);
exit_misc_device_register_failed:
exit_init_failed:
/*i2c_detach_client(new_client); */
exit_kfree:
kfree(obj);
exit:
ACC_LOG("%s: err = %d\n", __func__, err);
lis3dh_init_flag = -1;
return err;
}
static int lis3dh_i2c_remove(struct i2c_client *client)
{
int err = 0;
err = lis3dh_delete_attr(
&(lis3dh_init_info.platform_diver_addr->driver));
if (err)
ACC_LOG("lis3dh_delete_attr fail: %d\n", err);
misc_deregister(&lis3dh_device);
lis3dh_i2c_client = NULL;
i2c_unregister_device(client);
kfree(i2c_get_clientdata(client));
return 0;
}
static int lis3dh_remove(void)
{
LIS3DH_power(hw, 0);
i2c_del_driver(&lis3dh_i2c_driver);
return 0;
}
static int lis3dh_local_init(void)
{
LIS3DH_power(hw, 1);
if (i2c_add_driver(&lis3dh_i2c_driver)) {
ACC_LOG("add driver error\n");
return -1;
}
if (lis3dh_init_flag == -1)
return -1;
return 0;
}
static int __init lis3dh_init(void)
{
acc_driver_add(&lis3dh_init_info);
return 0;
}
static void __exit lis3dh_exit(void)
{
}
module_init(lis3dh_init);
module_exit(lis3dh_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("LIS3DH I2C driver");
MODULE_AUTHOR("Chunlei.Wang@mediatek.com");
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