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hybris-dev
android_kernel_samsung_a7y1.../drivers/sensors/k2hh.c
prashantpaddune 3bca37f224 A750FXXU4CTBC
2020-03-27 21:51:54 +05:30

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/*
* Copyright (C) 2013 Samsung Electronics. 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
* 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 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/>.
*/
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/errno.h>
#include <linux/input.h>
#include <linux/workqueue.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/of_gpio.h>
#include <linux/wakelock.h>
#include <linux/regulator/consumer.h>
#include <linux/sensor/sensors_core.h>
#define I2C_M_WR 0 /* for i2c Write */
#define I2c_M_RD 1 /* for i2c Read */
#define READ_DATA_LENGTH 6
#define VENDOR_NAME "STM"
#define MODEL_NAME "K2HH"
#define MODULE_NAME "accelerometer_sensor"
#define CALIBRATION_FILE_PATH "/efs/FactoryApp/accel_calibration_data"
#define CALIBRATION_DATA_AMOUNT 20
#define MAX_ACCEL_1G 8192
#define K2HH_DEFAULT_DELAY 200000000LL
#define K2HH_MIN_DELAY 5000000LL
#define CHIP_ID_RETRIES 3
#define ACCEL_LOG_TIME 15 /* 15 sec */
#define K2HH_MODE_SUSPEND 0
#define K2HH_MODE_NORMAL 1
#define SENSITIVITY_2G 61
#define SENSITIVITY_4G 122
#define SENSITIVITY_8G 244
#define K2HH_RANGE_2G 0
#define K2HH_RANGE_4G 1
#define K2HH_RANGE_8G 2
#define WHOAMI_REG 0x0F
#define AXISDATA_REG 0x28
#define CTRL1_REG 0x20
#define CTRL2_REG 0x21
#define CTRL3_REG 0x22
#define CTRL4_REG 0x23
#define CTRL5_REG 0x24
#define CTRL6_REG 0x25
#define CTRL7_REG 0x26
#define STATUS_REG 0x27
/* CTRL1 */
#define CTRL1_HR_DISABLE 0x00
#define CTRL1_HR_ENABLE 0x80
#define CTRL1_HR_MASK 0x80
#define CTRL1_BDU_ENABLE 0x08
#define CTRL1_BDU_MASK 0x08
/* CTRL2 */
#define CTRL2_DFC_MASK 0x60
#define CTRL2_DFC_50 0x00
#define CTRL2_DFC_100 0x20
#define CTRL2_DFC_9 0x40
#define CTRL2_DFC_400 0x60
/* CTRL3 */
#define CTRL3_IG1_INT1 0x08
/* CTRL7 */
#define CTRL7_LIR2 0x08
#define CTRL7_LIR1 0x04
#define ACC_PM_OFF 0x00
#define ACC_ENABLE_ALL_AXES 0x07
#define INT_CFG1_REG 0x30
#define INT_SRC1_REG 0x31
#define K2HH_CHIP_ID 0x41
#define K2HH_ACC_FS_MASK 0x30
#define K2HH_ACC_ODR_MASK 0x70
#define K2HH_ACC_BW_MASK 0xC0
#define K2HH_ACC_AXES_MASK 0x07
#define K2HH_ACC_BW_SCALE_ODR_MASK 0x08
#define SELF_TEST_2G_MAX_LSB 24576
#define SELF_TEST_2G_MIN_LSB 1146
#define K2HH_ACC_FS_2G 0x00
#define K2HH_ACC_FS_4G 0x20
#define K2HH_ACC_FS_8G 0x30
#define K2HH_ACC_BW_50 0xC0
#define K2HH_ACC_BW_100 0x80
#define K2HH_ACC_BW_200 0x40
#define K2HH_ACC_BW_400 0x00
#define INT_THSX1_REG 0x32
#define INT_THSY1_REG 0x33
#define INT_THSZ1_REG 0x34
#define K2HH_ACC_BW_SCALE_ODR_ENABLE 0x08
#define K2HH_ACC_BW_SCALE_ODR_DISABLE 0x00
#define DYNAMIC_THRESHOLD 5000
#define ENABLE_LPF_CUT_OFF_FREQ 1
#define ENABLE_LOG_ACCEL_MAX_OUT 1
#if defined(ENABLE_LOG_ACCEL_MAX_OUT)
#define ACCEL_MAX_OUTPUT 32760
#endif
#if defined(CONFIG_SAMSUNG_LPM_MODE)
extern int poweroff_charging;
#endif
enum {
OFF = 0,
ON = 1
};
struct k2hh_v {
union {
s16 v[3];
struct {
s16 x;
s16 y;
s16 z;
};
};
};
struct k2hh_p {
struct wake_lock reactive_wake_lock;
struct i2c_client *client;
struct input_dev *input;
struct delayed_work irq_work;
struct device *factory_device;
struct k2hh_v accdata;
struct k2hh_v caldata;
struct mutex mode_mutex;
struct hrtimer accel_timer;
struct workqueue_struct *accel_wq;
struct work_struct work_accel;
struct regulator *reg_vio;
#ifdef CONFIG_SENSORS_K2HH_VDD
struct regulator *reg_vdd;
#endif
ktime_t poll_delay;
atomic_t enable;
int recog_flag;
int irq1;
int irq_state;
int acc_int1;
int time_count;
u8 odr;
u8 hr;
u8 axis_map_x;
u8 axis_map_y;
u8 axis_map_z;
u8 negate_x;
u8 negate_y;
u8 negate_z;
u64 old_timestamp;
};
#define ACC_ODR10 0x10 /* 10Hz output data rate */
#define ACC_ODR50 0x20 /* 50Hz output data rate */
#define ACC_ODR100 0x30 /* 100Hz output data rate */
#define ACC_ODR200 0x40 /* 200Hz output data rate */
#define ACC_ODR400 0x50 /* 400Hz output data rate */
#define ACC_ODR800 0x60 /* 800Hz output data rate */
#define ACC_ODR_MASK 0X70
struct k2hh_acc_odr {
unsigned int cutoff_ms;
unsigned int mask;
};
#define OUTPUT_ALWAYS_ANTI_ALIASED /* Anti aliasing filter */
const struct k2hh_acc_odr k2hh_acc_odr_table[] = {
{ 2, ACC_ODR800},
{ 3, ACC_ODR400},
{ 5, ACC_ODR200},
{ 10, ACC_ODR100},
#ifndef OUTPUT_ALWAYS_ANTI_ALIASED
{ 20, ACC_ODR50},
{100, ACC_ODR10},
#endif
};
static int k2hh_i2c_read(struct k2hh_p *data,
unsigned char reg_addr, unsigned char *buf, unsigned int len)
{
int ret, retries = 0;
struct i2c_msg msg[2];
msg[0].addr = data->client->addr;
msg[0].flags = I2C_M_WR;
msg[0].len = 1;
msg[0].buf = &reg_addr;
msg[1].addr = data->client->addr;
msg[1].flags = I2C_M_RD;
msg[1].len = len;
msg[1].buf = buf;
do {
ret = i2c_transfer(data->client->adapter, msg, 2);
if (ret >= 0)
break;
} while (retries++ < 2);
if (ret < 0) {
SENSOR_ERR("i2c read error %d\n", ret);
return ret;
}
return 0;
}
static int k2hh_i2c_write(struct k2hh_p *data,
unsigned char reg_addr, unsigned char buf)
{
int ret, retries = 0;
struct i2c_msg msg;
unsigned char w_buf[2];
w_buf[0] = reg_addr;
w_buf[1] = buf;
msg.addr = data->client->addr;
msg.flags = I2C_M_WR;
msg.len = 2;
msg.buf = (char *)w_buf;
do {
ret = i2c_transfer(data->client->adapter, &msg, 1);
if (ret >= 0)
break;
} while (retries++ < 2);
if (ret < 0) {
SENSOR_ERR("i2c write error %d\n", ret);
return ret;
}
return 0;
}
static int k2hh_read_accel_xyz(struct k2hh_p *data, struct k2hh_v *acc)
{
int ret = 0;
struct k2hh_v rawdata;
unsigned char buf[READ_DATA_LENGTH];
ret = k2hh_i2c_read(data, AXISDATA_REG, buf, READ_DATA_LENGTH);
if (ret < 0)
goto exit;
rawdata.v[0] = ((s16) ((buf[1] << 8) | buf[0]));
rawdata.v[1] = ((s16) ((buf[3] << 8) | buf[2]));
rawdata.v[2] = ((s16) ((buf[5] << 8) | buf[4]));
acc->v[0] = ((data->negate_x) ? (-rawdata.v[data->axis_map_x]) :
(rawdata.v[data->axis_map_x]));
acc->v[1] = ((data->negate_y) ? (-rawdata.v[data->axis_map_y]) :
(rawdata.v[data->axis_map_y]));
acc->v[2] = ((data->negate_z) ? (-rawdata.v[data->axis_map_z]) :
(rawdata.v[data->axis_map_z]));
exit:
return ret;
}
static int k2hh_set_range(struct k2hh_p *data, unsigned char range)
{
int ret = 0;
unsigned char temp, new_range, buf, mask;
switch (range) {
case K2HH_RANGE_2G:
new_range = K2HH_ACC_FS_2G;
break;
case K2HH_RANGE_4G:
new_range = K2HH_ACC_FS_4G;
break;
case K2HH_RANGE_8G:
new_range = K2HH_ACC_FS_8G;
break;
default:
new_range = K2HH_ACC_FS_2G;
break;
}
mask = K2HH_ACC_FS_MASK;
ret = k2hh_i2c_read(data, CTRL4_REG, &temp, 1);
buf = (mask & new_range) | ((~mask) & temp);
ret += k2hh_i2c_write(data, CTRL4_REG, buf);
SENSOR_INFO("0x%x\n", new_range);
return ret;
}
static int k2hh_set_odr(struct k2hh_p *data)
{
int ret = 0, i;
unsigned char buf, new_odr, mask, temp;
for (i = ARRAY_SIZE(k2hh_acc_odr_table) - 1; i >= 0; i--) {
if ((k2hh_acc_odr_table[i].cutoff_ms <=
ktime_to_ms(data->poll_delay)) || (i == 0))
break;
}
if (data->recog_flag == ON)
i = ARRAY_SIZE(k2hh_acc_odr_table) - 1;
new_odr = k2hh_acc_odr_table[i].mask;
mask = K2HH_ACC_ODR_MASK;
ret = k2hh_i2c_read(data, CTRL1_REG, &temp, 1);
buf = ((mask & new_odr) | ((~mask) & temp));
ret += k2hh_i2c_write(data, CTRL1_REG, buf);
data->odr = new_odr;
SENSOR_INFO("change odr %d\n", i);
#if defined(ENABLE_LPF_CUT_OFF_FREQ)
/* To increase LPF cut-off frequency, ODR/DFC */
k2hh_i2c_read(data, CTRL2_REG, &buf, 1);
buf = (CTRL2_DFC_MASK & CTRL2_DFC_9) | ((~CTRL2_DFC_MASK) & buf);
k2hh_i2c_write(data, CTRL2_REG, buf);
SENSOR_INFO("ctrl2:%x\n", buf);
#endif
return ret;
}
static int k2hh_set_bw(struct k2hh_p *data)
{
int ret = 0;
unsigned char temp, buf, mask, new_range;
#if defined(OUTPUT_ALWAYS_ANTI_ALIASED)
new_range = K2HH_ACC_BW_SCALE_ODR_ENABLE;
mask = K2HH_ACC_BW_SCALE_ODR_MASK;
ret = k2hh_i2c_read(data, CTRL4_REG, &temp, 1);
buf = (mask & new_range) | ((~mask) & temp);
ret += k2hh_i2c_write(data, CTRL4_REG, buf);
new_range = K2HH_ACC_BW_50;
#else
new_range = K2HH_ACC_BW_400;
#endif
mask = K2HH_ACC_BW_MASK;
ret = k2hh_i2c_read(data, CTRL4_REG, &temp, 1);
buf = (mask & new_range) | ((~mask) & temp);
ret += k2hh_i2c_write(data, CTRL4_REG, buf);
return ret;
}
static int k2hh_set_hr(struct k2hh_p *data, int set)
{
int ret;
u8 buf, bw, odr;
SENSOR_INFO("%d\n", set);
if (set) {
data->hr = CTRL1_HR_ENABLE;
odr = data->odr;
k2hh_set_bw(data);
} else {
data->hr = CTRL1_HR_DISABLE;
odr = ACC_ODR800;
bw = K2HH_ACC_BW_400;
k2hh_i2c_read(data, CTRL4_REG, &buf, 1);
buf = (K2HH_ACC_BW_MASK & bw) | ((~K2HH_ACC_BW_MASK) & buf);
k2hh_i2c_write(data, CTRL4_REG, buf);
#if defined(OUTPUT_ALWAYS_ANTI_ALIASED)
bw = K2HH_ACC_BW_SCALE_ODR_DISABLE;
k2hh_i2c_read(data, CTRL4_REG, &buf, 1);
buf = (K2HH_ACC_BW_SCALE_ODR_MASK & bw) |
((~K2HH_ACC_BW_SCALE_ODR_MASK) & buf);
k2hh_i2c_write(data, CTRL4_REG, buf);
#endif
}
ret = k2hh_i2c_read(data, CTRL1_REG, &buf, 1);
buf = data->hr | ((~CTRL1_HR_MASK) & buf);
ret += k2hh_i2c_write(data, CTRL1_REG, buf);
ret += k2hh_i2c_read(data, CTRL1_REG, &buf, 1);
buf = ((K2HH_ACC_ODR_MASK & odr) | ((~K2HH_ACC_ODR_MASK) & buf));
ret += k2hh_i2c_write(data, CTRL1_REG, buf);
return ret;
}
static void k2hh_set_enable(struct k2hh_p *data, int enable)
{
if (enable == ON) {
hrtimer_start(&data->accel_timer, data->poll_delay,
HRTIMER_MODE_REL);
} else {
hrtimer_cancel(&data->accel_timer);
cancel_work_sync(&data->work_accel);
}
}
static int k2hh_set_mode(struct k2hh_p *data, unsigned char mode)
{
int ret = 0;
unsigned char buf, mask, temp;
mutex_lock(&data->mode_mutex);
switch (mode) {
case K2HH_MODE_NORMAL:
mask = K2HH_ACC_ODR_MASK;
ret = k2hh_i2c_read(data, CTRL1_REG, &temp, 1);
buf = ((mask & data->odr) | ((~mask) & temp));
buf = data->hr | ((~CTRL1_HR_MASK) & buf);
buf = CTRL1_BDU_ENABLE | ((~CTRL1_BDU_MASK) & buf);
ret += k2hh_i2c_write(data, CTRL1_REG, buf);
break;
case K2HH_MODE_SUSPEND:
if (data->recog_flag == ON)
break;
mask = K2HH_ACC_ODR_MASK;
ret = k2hh_i2c_read(data, CTRL1_REG, &temp, 1);
buf = ((mask & ACC_PM_OFF) | ((~mask) & temp));
ret += k2hh_i2c_write(data, CTRL1_REG, buf);
break;
default:
ret = -EINVAL;
break;
}
mutex_unlock(&data->mode_mutex);
SENSOR_INFO("change mode %u\n", mode);
return ret;
}
static int k2hh_open_calibration(struct k2hh_p *data)
{
int ret = 0;
mm_segment_t old_fs;
struct file *cal_filp = NULL;
old_fs = get_fs();
set_fs(KERNEL_DS);
cal_filp = filp_open(CALIBRATION_FILE_PATH, O_RDONLY, 0);
if (IS_ERR(cal_filp)) {
set_fs(old_fs);
ret = PTR_ERR(cal_filp);
data->caldata.x = 0;
data->caldata.y = 0;
data->caldata.z = 0;
SENSOR_INFO("No Calibration\n");
return ret;
}
ret = cal_filp->f_op->read(cal_filp, (char *)&data->caldata.v,
3 * sizeof(s16), &cal_filp->f_pos);
if (ret != 3 * sizeof(s16)) {
SENSOR_ERR("can't read the cal data\n");
ret = -EIO;
}
filp_close(cal_filp, current->files);
set_fs(old_fs);
SENSOR_INFO("open accel calibration %d, %d, %d\n",
data->caldata.x, data->caldata.y, data->caldata.z);
if ((data->caldata.x == 0) && (data->caldata.y == 0)
&& (data->caldata.z == 0))
return -EIO;
return ret;
}
static int k2hh_do_calibrate(struct k2hh_p *data, int enable)
{
int sum[3] = { 0, };
int ret = 0, cnt;
struct file *cal_filp = NULL;
struct k2hh_v acc;
mm_segment_t old_fs;
data->caldata.x = 0;
data->caldata.y = 0;
data->caldata.z = 0;
if (enable) {
if (atomic_read(&data->enable) == ON)
k2hh_set_enable(data, OFF);
else
k2hh_set_mode(data, K2HH_MODE_NORMAL);
msleep(300);
for (cnt = 0; cnt < CALIBRATION_DATA_AMOUNT; cnt++) {
k2hh_read_accel_xyz(data, &acc);
sum[0] += acc.x;
sum[1] += acc.y;
sum[2] += acc.z;
msleep(20);
}
if (atomic_read(&data->enable) == ON)
k2hh_set_enable(data, ON);
else
k2hh_set_mode(data, K2HH_MODE_SUSPEND);
data->caldata.x = (sum[0] / CALIBRATION_DATA_AMOUNT);
data->caldata.y = (sum[1] / CALIBRATION_DATA_AMOUNT);
data->caldata.z = (sum[2] / CALIBRATION_DATA_AMOUNT);
if (data->caldata.z > 0)
data->caldata.z -= MAX_ACCEL_1G;
else if (data->caldata.z < 0)
data->caldata.z += MAX_ACCEL_1G;
}
SENSOR_INFO("do accel calibrate %d, %d, %d\n",
data->caldata.x, data->caldata.y, data->caldata.z);
old_fs = get_fs();
set_fs(KERNEL_DS);
cal_filp = filp_open(CALIBRATION_FILE_PATH,
O_CREAT | O_TRUNC | O_WRONLY, 0660);
if (IS_ERR(cal_filp)) {
SENSOR_ERR("can't open calibration file\n");
set_fs(old_fs);
ret = PTR_ERR(cal_filp);
return ret;
}
ret = cal_filp->f_op->write(cal_filp, (char *)&data->caldata.v,
3 * sizeof(s16), &cal_filp->f_pos);
if (ret != 3 * sizeof(s16)) {
SENSOR_ERR("can't write the caldata to file\n");
ret = -EIO;
}
filp_close(cal_filp, current->files);
set_fs(old_fs);
return ret;
}
static enum hrtimer_restart k2hh_timer_func(struct hrtimer *timer)
{
struct k2hh_p *data = container_of(timer,
struct k2hh_p, accel_timer);
if (!work_pending(&data->work_accel))
queue_work(data->accel_wq, &data->work_accel);
hrtimer_forward_now(&data->accel_timer, data->poll_delay);
return HRTIMER_RESTART;
}
static void k2hh_work_func(struct work_struct *work)
{
struct k2hh_v acc;
struct k2hh_p *data = container_of(work, struct k2hh_p, work_accel);
struct timespec ts;
u64 timestamp_new;
u64 delay = ktime_to_ns(data->poll_delay);
int time_hi, time_lo;
int ret;
ret = k2hh_read_accel_xyz(data, &acc);
if (ret < 0)
goto exit;
#if defined(ENABLE_LOG_ACCEL_MAX_OUT)
/* For debugging if happened exceptional situation */
if (acc.x > ACCEL_MAX_OUTPUT ||
acc.y > ACCEL_MAX_OUTPUT ||
acc.z > ACCEL_MAX_OUTPUT) {
unsigned char buf[4], status;
k2hh_i2c_read(data, CTRL1_REG, buf, 4);
k2hh_i2c_read(data, STATUS_REG, &status, 1);
SENSOR_INFO("MAX_OUTPUT x = %d, y = %d, z = %d\n",
acc.x, acc.y, acc.z);
SENSOR_INFO("CTRL(20h~23h) : %X, %X, %X, %X - STATUS(27h) : %X\n",
buf[0], buf[1], buf[2], buf[3], status);
}
#endif
ts = ktime_to_timespec(ktime_get_boottime());
timestamp_new = ts.tv_sec * 1000000000ULL + ts.tv_nsec;
data->accdata.x = acc.x - data->caldata.x;
data->accdata.y = acc.y - data->caldata.y;
data->accdata.z = acc.z - data->caldata.z;
if (((timestamp_new - data->old_timestamp) * 10 > delay * 18)
&& (data->old_timestamp != 0)) {
u64 shift_timestamp = delay >> 1;
u64 timestamp = 0ULL;
for (timestamp = data->old_timestamp + delay;
timestamp < timestamp_new - shift_timestamp; timestamp += delay) {
time_hi = (int)((timestamp & TIME_HI_MASK) >> TIME_HI_SHIFT);
time_lo = (int)(timestamp & TIME_LO_MASK);
input_report_rel(data->input, REL_X, data->accdata.x);
input_report_rel(data->input, REL_Y, data->accdata.y);
input_report_rel(data->input, REL_Z, data->accdata.z);
input_report_rel(data->input, REL_DIAL, time_hi);
input_report_rel(data->input, REL_MISC, time_lo);
input_sync(data->input);
}
}
time_hi = (int)((timestamp_new & TIME_HI_MASK) >> TIME_HI_SHIFT);
time_lo = (int)(timestamp_new & TIME_LO_MASK);
input_report_rel(data->input, REL_X, data->accdata.x);
input_report_rel(data->input, REL_Y, data->accdata.y);
input_report_rel(data->input, REL_Z, data->accdata.z);
input_report_rel(data->input, REL_DIAL, time_hi);
input_report_rel(data->input, REL_MISC, time_lo);
input_sync(data->input);
data->old_timestamp = timestamp_new;
exit:
if ((ktime_to_ns(data->poll_delay) * (int64_t)data->time_count)
>= ((int64_t)ACCEL_LOG_TIME * NSEC_PER_SEC)) {
SENSOR_INFO("x = %d, y = %d, z = %d (ra:%d)\n",
data->accdata.x, data->accdata.y,
data->accdata.z, data->recog_flag);
data->time_count = 0;
} else
data->time_count++;
}
static ssize_t k2hh_enable_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct k2hh_p *data = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&data->enable));
}
static ssize_t k2hh_enable_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
u8 enable;
int ret, pre_enable;
struct k2hh_p *data = dev_get_drvdata(dev);
ret = kstrtou8(buf, 2, &enable);
if (ret) {
SENSOR_ERR("Invalid Argument\n");
return ret;
}
pre_enable = atomic_read(&data->enable);
SENSOR_INFO("pre_enable = %d, enable = %d\n", pre_enable, enable);
if (enable) {
if (pre_enable == OFF) {
data->old_timestamp = 0LL;
if (data->caldata.x == 0 && data->caldata.y == 0
&& data->caldata.z == 0)
k2hh_open_calibration(data);
k2hh_set_range(data, K2HH_RANGE_4G);
k2hh_set_bw(data);
k2hh_set_mode(data, K2HH_MODE_NORMAL);
atomic_set(&data->enable, ON);
k2hh_set_enable(data, ON);
}
} else {
if (pre_enable == ON) {
atomic_set(&data->enable, OFF);
k2hh_set_mode(data, K2HH_MODE_SUSPEND);
k2hh_set_enable(data, OFF);
}
}
return size;
}
static ssize_t k2hh_delay_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct k2hh_p *data = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE, "%lld\n",
ktime_to_ns(data->poll_delay));
}
static ssize_t k2hh_delay_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
int ret;
int64_t delay;
struct k2hh_p *data = dev_get_drvdata(dev);
ret = kstrtoll(buf, 10, &delay);
if (ret) {
SENSOR_ERR("Invalid Argument\n");
return ret;
}
if (delay > K2HH_DEFAULT_DELAY)
delay = K2HH_DEFAULT_DELAY;
else if (delay < K2HH_MIN_DELAY)
delay = K2HH_MIN_DELAY;
data->poll_delay = ns_to_ktime(delay);
k2hh_set_odr(data);
if (atomic_read(&data->enable) == ON) {
k2hh_set_mode(data, K2HH_MODE_SUSPEND);
k2hh_set_mode(data, K2HH_MODE_NORMAL);
}
SENSOR_INFO("poll_delay = %lld\n", delay);
return size;
}
static DEVICE_ATTR(poll_delay, 0664,
k2hh_delay_show, k2hh_delay_store);
static DEVICE_ATTR(enable, 0664,
k2hh_enable_show, k2hh_enable_store);
static struct attribute *k2hh_attributes[] = {
&dev_attr_poll_delay.attr,
&dev_attr_enable.attr,
NULL
};
static struct attribute_group k2hh_attribute_group = {
.attrs = k2hh_attributes
};
static ssize_t k2hh_vendor_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%s\n", VENDOR_NAME);
}
static ssize_t k2hh_name_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%s\n", MODEL_NAME);
}
static ssize_t k2hh_calibration_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ret;
struct k2hh_p *data = dev_get_drvdata(dev);
ret = k2hh_open_calibration(data);
if (ret < 0)
SENSOR_ERR("calibration open failed(%d)\n", ret);
SENSOR_INFO("cal data %d %d %d - ret : %d\n",
data->caldata.x, data->caldata.y, data->caldata.z, ret);
return snprintf(buf, PAGE_SIZE, "%d %d %d %d\n", ret,
data->caldata.x, data->caldata.y, data->caldata.z);
}
static ssize_t k2hh_calibration_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
int ret;
int64_t d_enable;
struct k2hh_p *data = dev_get_drvdata(dev);
ret = kstrtoll(buf, 10, &d_enable);
if (ret < 0)
return ret;
ret = k2hh_do_calibrate(data, (int)d_enable);
if (ret < 0)
SENSOR_ERR("accel calibrate failed\n");
return size;
}
static ssize_t k2hh_lowpassfilter_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ret;
struct k2hh_p *data = dev_get_drvdata(dev);
if (data->hr == CTRL1_HR_ENABLE)
ret = 1;
else
ret = 0;
return snprintf(buf, PAGE_SIZE, "%d\n", ret);
}
static ssize_t k2hh_lowpassfilter_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
int ret;
int64_t d_enable;
struct k2hh_p *data = dev_get_drvdata(dev);
SENSOR_INFO("\n");
ret = kstrtoll(buf, 10, &d_enable);
if (ret < 0)
SENSOR_ERR("kstrtoll failed\n");
ret = k2hh_set_hr(data, d_enable);
if (ret < 0)
SENSOR_ERR("set_hr failed\n");
return size;
}
static ssize_t k2hh_raw_data_read(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct k2hh_v acc;
struct k2hh_p *data = dev_get_drvdata(dev);
if (atomic_read(&data->enable) == OFF) {
k2hh_set_mode(data, K2HH_MODE_NORMAL);
msleep(20);
k2hh_read_accel_xyz(data, &acc);
k2hh_set_mode(data, K2HH_MODE_SUSPEND);
acc.x = acc.x - data->caldata.x;
acc.y = acc.y - data->caldata.y;
acc.z = acc.z - data->caldata.z;
} else
acc = data->accdata;
return snprintf(buf, PAGE_SIZE, "%d,%d,%d\n",
acc.x, acc.y, acc.z);
}
static ssize_t k2hh_reactive_alert_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct k2hh_p *data = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE, "%d\n", data->irq_state);
}
static ssize_t k2hh_reactive_alert_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
unsigned char threshx, threshy, threshz;
int enable = OFF, factory_mode = OFF;
struct k2hh_v acc;
struct k2hh_p *data = dev_get_drvdata(dev);
if (sysfs_streq(buf, "0")) {
enable = OFF;
factory_mode = OFF;
SENSOR_INFO("disable\n");
} else if (sysfs_streq(buf, "1")) {
enable = ON;
factory_mode = OFF;
SENSOR_INFO("enable\n");
} else if (sysfs_streq(buf, "2")) {
enable = ON;
factory_mode = ON;
SENSOR_INFO("factory mode\n");
} else {
SENSOR_ERR("invalid value %d\n", *buf);
return -EINVAL;
}
if ((enable == ON) && (data->recog_flag == OFF)) {
data->irq_state = 0;
data->recog_flag = ON;
if (factory_mode == ON) {
k2hh_i2c_write(data, INT_THSX1_REG, 0x00);
k2hh_i2c_write(data, INT_THSY1_REG, 0x00);
k2hh_i2c_write(data, INT_THSZ1_REG, 0x00);
k2hh_i2c_write(data, INT_CFG1_REG, 0x3f);
} else {
k2hh_set_odr(data);
if (atomic_read(&data->enable) == OFF) {
k2hh_set_mode(data, K2HH_MODE_NORMAL);
msleep(20);
k2hh_read_accel_xyz(data, &acc);
k2hh_set_mode(data, K2HH_MODE_SUSPEND);
} else {
acc.x = data->accdata.x;
acc.y = data->accdata.y;
acc.z = data->accdata.z;
}
threshx = (abs(acc.v[data->axis_map_x])
+ DYNAMIC_THRESHOLD) >> 8;
threshy = (abs(acc.v[data->axis_map_y])
+ DYNAMIC_THRESHOLD) >> 8;
threshz = (abs(acc.v[data->axis_map_z])
+ DYNAMIC_THRESHOLD) >> 8;
k2hh_i2c_write(data, INT_THSX1_REG, threshx);
k2hh_i2c_write(data, INT_THSY1_REG, threshy);
k2hh_i2c_write(data, INT_THSZ1_REG, threshz);
k2hh_i2c_write(data, INT_CFG1_REG, 0x0a);
}
enable_irq(data->irq1);
enable_irq_wake(data->irq1);
k2hh_i2c_write(data, CTRL7_REG, CTRL7_LIR1);
k2hh_i2c_write(data, CTRL3_REG, CTRL3_IG1_INT1);
SENSOR_INFO("reactive alert is on!\n");
} else if ((enable == OFF) && (data->recog_flag == ON)) {
k2hh_i2c_write(data, CTRL3_REG, 0x00);
disable_irq_wake(data->irq1);
disable_irq_nosync(data->irq1);
data->recog_flag = OFF;
SENSOR_INFO("reactive alert is off! irq = %d\n",
data->irq_state);
}
return size;
}
static ssize_t k2hh_selftest_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct k2hh_p *data = dev_get_drvdata(dev);
struct k2hh_v acc;
unsigned char temp, backup[4];
int result = 1, i, retry;
ssize_t ret;
s32 NO_ST[3] = {0, 0, 0};
s32 ST[3] = {0, 0, 0};
k2hh_i2c_read(data, CTRL1_REG, &backup[0], 1);
k2hh_i2c_read(data, CTRL4_REG, &backup[1], 1);
k2hh_i2c_read(data, CTRL5_REG, &backup[2], 1);
k2hh_i2c_read(data, CTRL6_REG, &backup[3], 1);
if (atomic_read(&data->enable) == OFF)
k2hh_set_mode(data, K2HH_MODE_NORMAL);
else
k2hh_set_enable(data, OFF);
k2hh_i2c_write(data, CTRL1_REG, 0x3f);
k2hh_i2c_write(data, CTRL4_REG, 0x04);
k2hh_i2c_write(data, CTRL5_REG, 0x00);
k2hh_i2c_write(data, CTRL6_REG, 0x00);
msleep(80);
k2hh_read_accel_xyz(data, &acc);
for (i = 0; i < 5; i++) {
retry = 5;
do {
ret = k2hh_i2c_read(data, STATUS_REG, &temp, 1);
if (ret < 0) {
SENSOR_ERR("i2c error");
goto exit_status_err;
}
if (temp & 0x08)
break;
msleep(20);
} while (retry-- >= 0);
if (retry < 0) {
SENSOR_ERR("failed to update data\n");
goto exit_status_err;
}
k2hh_read_accel_xyz(data, &acc);
NO_ST[0] += acc.x;
NO_ST[1] += acc.y;
NO_ST[2] += acc.z;
}
NO_ST[0] /= 5;
NO_ST[1] /= 5;
NO_ST[2] /= 5;
k2hh_i2c_write(data, CTRL5_REG, 0x04);
msleep(80);
k2hh_read_accel_xyz(data, &acc);
for (i = 0; i < 5; i++) {
retry = 5;
do {
ret = k2hh_i2c_read(data, STATUS_REG, &temp, 1);
if (ret < 0) {
SENSOR_ERR("i2c error");
goto exit_status_err;
}
if (temp & 0x08)
break;
msleep(20);
} while (retry-- >= 0);
if (retry < 0) {
SENSOR_ERR("failed to update data\n");
goto exit_status_err;
}
k2hh_read_accel_xyz(data, &acc);
ST[0] += acc.x;
ST[1] += acc.y;
ST[2] += acc.z;
}
ST[0] /= 5;
ST[1] /= 5;
ST[2] /= 5;
for (i = 0; i < 3; i++) {
ST[i] -= NO_ST[i];
ST[i] = abs(ST[i]);
if ((ST[i] < SELF_TEST_2G_MIN_LSB)
|| (ST[i] > SELF_TEST_2G_MAX_LSB)) {
SENSOR_ERR("%d Out of range!! (%d)\n", i, ST[i]);
result = 0;
}
}
if (result)
ret = snprintf(buf, 0xff, "1,%d,%d,%d\n", ST[0], ST[1], ST[2]);
else
ret = snprintf(buf, 0xff, "0,%d,%d,%d\n", ST[0], ST[1], ST[2]);
goto exit;
exit_status_err:
ret = snprintf(buf, 0xff, "-1,0,0,0\n");
exit:
k2hh_i2c_write(data, CTRL1_REG, 0x00);
k2hh_i2c_write(data, CTRL5_REG, 0x00);
k2hh_i2c_write(data, CTRL1_REG, backup[0]);
k2hh_i2c_write(data, CTRL4_REG, backup[1]);
k2hh_i2c_write(data, CTRL5_REG, backup[2]);
k2hh_i2c_write(data, CTRL6_REG, backup[3]);
if (atomic_read(&data->enable) == OFF) {
k2hh_set_mode(data, K2HH_MODE_SUSPEND);
} else {
k2hh_set_mode(data, K2HH_MODE_NORMAL);
k2hh_set_enable(data, ON);
}
return ret;
}
static DEVICE_ATTR(selftest, 0444, k2hh_selftest_show, NULL);
static DEVICE_ATTR(name, 0444, k2hh_name_show, NULL);
static DEVICE_ATTR(vendor, 0444, k2hh_vendor_show, NULL);
static DEVICE_ATTR(calibration, 0664,
k2hh_calibration_show, k2hh_calibration_store);
static DEVICE_ATTR(lowpassfilter, 0664,
k2hh_lowpassfilter_show, k2hh_lowpassfilter_store);
static DEVICE_ATTR(raw_data, 0444, k2hh_raw_data_read, NULL);
static DEVICE_ATTR(reactive_alert, 0664,
k2hh_reactive_alert_show, k2hh_reactive_alert_store);
static struct device_attribute *sensor_attrs[] = {
&dev_attr_name,
&dev_attr_vendor,
&dev_attr_calibration,
&dev_attr_lowpassfilter,
&dev_attr_raw_data,
&dev_attr_reactive_alert,
&dev_attr_selftest,
NULL,
};
static void k2hh_irq_work_func(struct work_struct *work)
{
struct k2hh_p *data = container_of((struct delayed_work *)work,
struct k2hh_p, irq_work);
unsigned char buf;
k2hh_i2c_write(data, INT_CFG1_REG, 0x00);
k2hh_i2c_read(data, INT_SRC1_REG, &buf, 1);
}
static irqreturn_t k2hh_irq_thread(int irq, void *k2hh_data_p)
{
struct k2hh_p *data = k2hh_data_p;
data->irq_state = 1;
wake_lock_timeout(&data->reactive_wake_lock,
msecs_to_jiffies(2000));
schedule_delayed_work(&data->irq_work, msecs_to_jiffies(100));
SENSOR_INFO("###### reactive irq ######\n");
return IRQ_HANDLED;
}
static int k2hh_setup_pin(struct k2hh_p *data)
{
int ret;
ret = gpio_request(data->acc_int1, "ACC_INT1");
if (ret < 0) {
SENSOR_ERR("gpio %d request failed (%d)\n",
data->acc_int1, ret);
goto exit;
}
ret = gpio_direction_input(data->acc_int1);
if (ret < 0) {
SENSOR_ERR("failed to set gpio %d as input (%d)\n",
data->acc_int1, ret);
goto exit_acc_int1;
}
wake_lock_init(&data->reactive_wake_lock, WAKE_LOCK_SUSPEND,
"reactive_wake_lock");
data->irq1 = gpio_to_irq(data->acc_int1);
/* add IRQF_NO_SUSPEND option in case of Spreadtrum AP */
ret = request_threaded_irq(data->irq1, NULL, k2hh_irq_thread,
IRQF_TRIGGER_RISING | IRQF_ONESHOT, "k2hh_accel", data);
if (ret < 0) {
SENSOR_ERR("can't allocate irq.\n");
goto exit_reactive_irq;
}
disable_irq(data->irq1);
goto exit;
exit_reactive_irq:
wake_lock_destroy(&data->reactive_wake_lock);
exit_acc_int1:
gpio_free(data->acc_int1);
exit:
return ret;
}
static int k2hh_input_init(struct k2hh_p *data)
{
int ret = 0;
struct input_dev *dev;
dev = input_allocate_device();
if (!dev)
return -ENOMEM;
dev->name = MODULE_NAME;
dev->id.bustype = BUS_I2C;
input_set_capability(dev, EV_REL, REL_X);
input_set_capability(dev, EV_REL, REL_Y);
input_set_capability(dev, EV_REL, REL_Z);
input_set_capability(dev, EV_REL, REL_DIAL);
input_set_capability(dev, EV_REL, REL_MISC);
input_set_drvdata(dev, data);
ret = input_register_device(dev);
if (ret < 0)
goto err_register_input_dev;
ret = sensors_create_symlink(&dev->dev.kobj, dev->name);
if (ret < 0)
goto err_create_sensor_symlink;
/* sysfs node creation */
ret = sysfs_create_group(&dev->dev.kobj, &k2hh_attribute_group);
if (ret < 0)
goto err_create_sysfs_group;
data->input = dev;
return 0;
err_create_sysfs_group:
sensors_remove_symlink(&dev->dev.kobj, dev->name);
err_create_sensor_symlink:
input_unregister_device(dev);
err_register_input_dev:
input_free_device(dev);
return ret;
}
static int k2hh_parse_dt(struct k2hh_p *data, struct device *dev)
{
struct device_node *d_node = dev->of_node;
enum of_gpio_flags flags;
int ret;
u32 temp;
if (d_node == NULL)
return -ENODEV;
data->acc_int1 = of_get_named_gpio_flags(d_node, "k2hh,irq_gpio", 0, &flags);
if (data->acc_int1 < 0) {
SENSOR_ERR("get acc_int1 error\n");
return -ENODEV;
}
ret = of_property_read_u32(d_node, "k2hh,axis_map_x", &temp);
if ((data->axis_map_x > 2) || (ret < 0)) {
SENSOR_ERR("invalid x axis_map value %u\n",
data->axis_map_x);
data->axis_map_x = 0;
} else
data->axis_map_x = (u8)temp;
ret = of_property_read_u32(d_node, "k2hh,axis_map_y", &temp);
if ((data->axis_map_y > 2) || (ret < 0)) {
SENSOR_ERR("invalid y axis_map value %u\n",
data->axis_map_y);
data->axis_map_y = 1;
} else
data->axis_map_y = (u8)temp;
ret = of_property_read_u32(d_node, "k2hh,axis_map_z", &temp);
if ((data->axis_map_z > 2) || (ret < 0)) {
SENSOR_ERR("invalid z axis_map value %u\n",
data->axis_map_z);
data->axis_map_z = 2;
} else
data->axis_map_z = (u8)temp;
ret = of_property_read_u32(d_node, "k2hh,negate_x", &temp);
if ((data->negate_x > 1) || (ret < 0)) {
SENSOR_ERR("invalid x axis_map value %u\n",
data->negate_x);
data->negate_x = 0;
} else
data->negate_x = (u8)temp;
ret = of_property_read_u32(d_node, "k2hh,negate_y", &temp);
if ((data->negate_y > 1) || (ret < 0)) {
SENSOR_ERR("invalid y axis_map value %u\n",
data->negate_y);
data->negate_y = 0;
} else
data->negate_y = (u8)temp;
ret = of_property_read_u32(d_node, "k2hh,negate_z", &temp);
if ((data->negate_z > 1) || (ret < 0)) {
SENSOR_ERR("invalid z axis_map value %u\n",
data->negate_z);
data->negate_z = 0;
} else
data->negate_z = (u8)temp;
return 0;
}
static int k2hh_regulator_onoff(struct k2hh_p *data, bool onoff)
{
int ret = 0;
SENSOR_INFO("%s\n", (onoff) ? "on" : "off");
#ifdef CONFIG_SENSORS_K2HH_VDD
if (!data->reg_vdd) {
SENSOR_INFO("VDD get regulator\n");
data->reg_vdd = devm_regulator_get(&data->client->dev,
"k2hh,vdd");
if (IS_ERR(data->reg_vdd)) {
SENSOR_ERR("could not get vdd, %ld\n",
PTR_ERR(data->reg_vdd));
ret = -ENODEV;
goto err_vdd;
}
regulator_set_voltage(data->reg_vdd, 2850000, 2850000);
}
#endif
if (!data->reg_vio) {
SENSOR_INFO("VIO get regulator\n");
data->reg_vio = devm_regulator_get(&data->client->dev,
"k2hh,vio");
if (IS_ERR(data->reg_vio)) {
SENSOR_ERR("could not get vio, %ld\n",
PTR_ERR(data->reg_vio));
ret = -ENODEV;
goto err_vio;
}
regulator_set_voltage(data->reg_vio, 1800000, 1800000);
}
if (onoff) {
#ifdef CONFIG_SENSORS_K2HH_VDD
ret = regulator_enable(data->reg_vdd);
if (ret)
SENSOR_ERR("failed to enable vdd.\n");
#endif
ret = regulator_enable(data->reg_vio);
if (ret)
SENSOR_ERR("failed to enable vio.\n");
msleep(30);
} else {
#ifdef CONFIG_SENSORS_K2HH_VDD
ret = regulator_disable(data->reg_vdd);
if (ret)
SENSOR_ERR("failed to disable vdd.\n");
#endif
ret = regulator_disable(data->reg_vio);
if (ret)
SENSOR_ERR("failed to disable vio.\n");
msleep(30);
}
return 0;
err_vio:
#ifdef CONFIG_SENSORS_K2HH_VDD
SENSOR_INFO("VDD put\n");
devm_regulator_put(data->reg_vdd);
err_vdd:
#endif
return ret;
}
static int k2hh_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
u8 temp;
int ret = -ENODEV, i;
struct k2hh_p *data;
SENSOR_INFO("start!\n");
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
SENSOR_ERR("i2c_check_functionality error\n");
goto exit;
}
data = kzalloc(sizeof(struct k2hh_p), GFP_KERNEL);
if (data == NULL) {
SENSOR_ERR("kzalloc error\n");
ret = -ENOMEM;
goto exit;
}
i2c_set_clientdata(client, data);
data->client = client;
ret = k2hh_parse_dt(data, &client->dev);
if (ret < 0) {
SENSOR_ERR("of_node error\n");
ret = -ENODEV;
goto exit_of_node;
}
ret = k2hh_regulator_onoff(data, true);
if (ret < 0) {
SENSOR_ERR("No regulator\n");
goto exit_no_regulator;
}
mutex_init(&data->mode_mutex);
/* read chip id */
k2hh_set_mode(data, K2HH_MODE_NORMAL);
for (i = 0; i < CHIP_ID_RETRIES; i++) {
ret = k2hh_i2c_read(data, WHOAMI_REG, &temp, 1);
if (temp != K2HH_CHIP_ID) {
SENSOR_INFO("chip id failed 0x%x : %d\n",
temp, ret);
} else {
SENSOR_INFO("chip id success 0x%x\n",
temp);
break;
}
msleep(20);
}
if (i >= CHIP_ID_RETRIES) {
ret = -ENODEV;
goto exit_read_chipid;
}
/* input device init */
ret = k2hh_input_init(data);
if (ret < 0)
goto exit_input_init;
ret = sensors_register(&data->factory_device, data, sensor_attrs,
MODULE_NAME);
if (ret) {
SENSOR_ERR("failed to sensors_register (%d)\n", ret);
goto exit_sensor_register_failed;
}
/* accel_timer settings. we poll for light values using a timer. */
hrtimer_init(&data->accel_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
data->poll_delay = ns_to_ktime(K2HH_DEFAULT_DELAY);
data->accel_timer.function = k2hh_timer_func;
data->accel_wq = create_singlethread_workqueue("accel_wq");
if (!data->accel_wq) {
ret = -ENOMEM;
SENSOR_ERR("could not create workqueue\n");
goto exit_create_workqueue;
}
/* this is the thread function we run on the work queue */
INIT_WORK(&data->work_accel, k2hh_work_func);
INIT_DELAYED_WORK(&data->irq_work, k2hh_irq_work_func);
ret = k2hh_setup_pin(data);
if (ret < 0) {
SENSOR_ERR("could not setup pin\n");
goto exit_setup_pin;
}
atomic_set(&data->enable, OFF);
data->time_count = 0;
data->irq_state = 0;
data->recog_flag = OFF;
data->hr = CTRL1_HR_ENABLE;
k2hh_set_range(data, K2HH_RANGE_4G);
k2hh_set_mode(data, K2HH_MODE_SUSPEND);
SENSOR_INFO("done!\n");
return 0;
exit_setup_pin:
cancel_delayed_work_sync(&data->irq_work);
destroy_workqueue(data->accel_wq);
exit_create_workqueue:
sensors_unregister(data->factory_device, sensor_attrs);
exit_sensor_register_failed:
sensors_remove_symlink(&data->input->dev.kobj, data->input->name);
sysfs_remove_group(&data->input->dev.kobj, &k2hh_attribute_group);
input_unregister_device(data->input);
exit_input_init:
exit_read_chipid:
mutex_destroy(&data->mode_mutex);
k2hh_regulator_onoff(data, false);
exit_no_regulator:
exit_of_node:
kfree(data);
exit:
SENSOR_ERR("fail!\n");
return ret;
}
static int k2hh_remove(struct i2c_client *client)
{
SENSOR_INFO("\n");
return 0;
}
static int k2hh_suspend(struct device *dev)
{
struct k2hh_p *data = dev_get_drvdata(dev);
SENSOR_INFO("\n");
if (atomic_read(&data->enable) == ON) {
k2hh_set_mode(data, K2HH_MODE_SUSPEND);
k2hh_set_enable(data, OFF);
}
return 0;
}
static int k2hh_resume(struct device *dev)
{
struct k2hh_p *data = dev_get_drvdata(dev);
SENSOR_INFO("\n");
if (atomic_read(&data->enable) == ON) {
k2hh_set_mode(data, K2HH_MODE_NORMAL);
k2hh_set_enable(data, ON);
}
return 0;
}
static void k2hh_shutdown(struct i2c_client *client)
{
struct k2hh_p *data = i2c_get_clientdata(client);
if (atomic_read(&data->enable) == ON)
k2hh_set_enable(data, OFF);
atomic_set(&data->enable, OFF);
k2hh_set_mode(data, K2HH_MODE_SUSPEND);
}
static const struct of_device_id k2hh_match_table[] = {
{ .compatible = "k2hh-i2c",},
{},
};
static const struct i2c_device_id k2hh_id[] = {
{ "k2hh_match_table", 0 },
{ }
};
static const struct dev_pm_ops k2hh_pm_ops = {
.suspend = k2hh_suspend,
.resume = k2hh_resume
};
static struct i2c_driver k2hh_driver = {
.driver = {
.name = "k2hh-i2c",
.owner = THIS_MODULE,
.of_match_table = k2hh_match_table,
.pm = &k2hh_pm_ops
},
.probe = k2hh_probe,
.remove = k2hh_remove,
.shutdown = k2hh_shutdown,
.id_table = k2hh_id,
};
static int __init k2hh_init(void)
{
#if defined(CONFIG_SAMSUNG_LPM_MODE)
if (poweroff_charging) {
SENSOR_INFO("Skip init due to low power charging mode %d\n", poweroff_charging);
return 0;
}
#endif
return i2c_add_driver(&k2hh_driver);
}
static void __exit k2hh_exit(void)
{
i2c_del_driver(&k2hh_driver);
}
module_init(k2hh_init);
module_exit(k2hh_exit);
MODULE_DESCRIPTION("k2hh accelerometer sensor driver");
MODULE_AUTHOR("Samsung Electronics");
MODULE_LICENSE("GPL");
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