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bma250.c
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bma250.c
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/* Date: 2014.2.27
* Revision: 2.5
*/
/*
* This software program is licensed subject to the GNU General Public License
* (GPL).Version 2,June 1991, available at http://www.fsf.org/copyleft/gpl.html
* (C) Copyright 2011 Bosch Sensortec GmbH
* All Rights Reserved
*/
/* file BMA250.c
brief This file contains all function implementations for the BMA250 in linux
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/workqueue.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <mach/system.h>
#include <mach/hardware.h>
#include <mach/sys_config.h>
#include <linux/init-input.h>
#include <linux/kobject.h>
#include <linux/sysfs.h>
#ifdef CONFIG_HAS_EARLYSUSPEND
#include <linux/earlysuspend.h>
#endif
#if defined(CONFIG_HAS_EARLYSUSPEND) || defined(CONFIG_PM)
#include <linux/pm.h>
#endif
static u32 debug_mask = 0;
#define dprintk(level_mask, fmt, arg...) if (unlikely(debug_mask & level_mask)) \
printk(KERN_DEBUG fmt , ## arg)
module_param_named(debug_mask, debug_mask, int, S_IRUGO | S_IWUSR | S_IWGRP);
#define SENSOR_NAME "bma250"
#define GRAVITY_EARTH 9806550
#define ABSMIN_2G (-GRAVITY_EARTH * 2)
#define ABSMAX_2G (GRAVITY_EARTH * 2)
#define SLOPE_THRESHOLD_VALUE 32
#define SLOPE_DURATION_VALUE 1
#define INTERRUPT_LATCH_MODE 13
#define INTERRUPT_ENABLE 1
#define INTERRUPT_DISABLE 0
#define MAP_SLOPE_INTERRUPT 2
#define SLOPE_X_INDEX 5
#define SLOPE_Y_INDEX 6
#define SLOPE_Z_INDEX 7
#define BMA250_MAX_DELAY 200
#define BMA150_CHIP_ID 2
#define BMA250_CHIP_ID 3
#define BMA250E_CHIP_ID 0xF9
#define BMA250_RANGE_SET 0
#define BMA250_BW_SET 4
/*
*
* register definitions
*
*/
#define BMA250_CHIP_ID_REG 0x00
#define BMA250_VERSION_REG 0x01
#define BMA250_X_AXIS_LSB_REG 0x02
#define BMA250_X_AXIS_MSB_REG 0x03
#define BMA250_Y_AXIS_LSB_REG 0x04
#define BMA250_Y_AXIS_MSB_REG 0x05
#define BMA250_Z_AXIS_LSB_REG 0x06
#define BMA250_Z_AXIS_MSB_REG 0x07
#define BMA250_TEMP_RD_REG 0x08
#define BMA250_STATUS1_REG 0x09
#define BMA250_STATUS2_REG 0x0A
#define BMA250_STATUS_TAP_SLOPE_REG 0x0B
#define BMA250_STATUS_ORIENT_HIGH_REG 0x0C
#define BMA250_RANGE_SEL_REG 0x0F
#define BMA250_BW_SEL_REG 0x10
#define BMA250_MODE_CTRL_REG 0x11
#define BMA250_LOW_NOISE_CTRL_REG 0x12
#define BMA250_DATA_CTRL_REG 0x13
#define BMA250_RESET_REG 0x14
#define BMA250_INT_ENABLE1_REG 0x16
#define BMA250_INT_ENABLE2_REG 0x17
#define BMA250_INT1_PAD_SEL_REG 0x19
#define BMA250_INT_DATA_SEL_REG 0x1A
#define BMA250_INT2_PAD_SEL_REG 0x1B
#define BMA250_INT_SRC_REG 0x1E
#define BMA250_INT_SET_REG 0x20
#define BMA250_INT_CTRL_REG 0x21
#define BMA250_LOW_DURN_REG 0x22
#define BMA250_LOW_THRES_REG 0x23
#define BMA250_LOW_HIGH_HYST_REG 0x24
#define BMA250_HIGH_DURN_REG 0x25
#define BMA250_HIGH_THRES_REG 0x26
#define BMA250_SLOPE_DURN_REG 0x27
#define BMA250_SLOPE_THRES_REG 0x28
#define BMA250_TAP_PARAM_REG 0x2A
#define BMA250_TAP_THRES_REG 0x2B
#define BMA250_ORIENT_PARAM_REG 0x2C
#define BMA250_THETA_BLOCK_REG 0x2D
#define BMA250_THETA_FLAT_REG 0x2E
#define BMA250_FLAT_HOLD_TIME_REG 0x2F
#define BMA250_STATUS_LOW_POWER_REG 0x31
#define BMA250_SELF_TEST_REG 0x32
#define BMA250_EEPROM_CTRL_REG 0x33
#define BMA250_SERIAL_CTRL_REG 0x34
#define BMA250_CTRL_UNLOCK_REG 0x35
#define BMA250_OFFSET_CTRL_REG 0x36
#define BMA250_OFFSET_PARAMS_REG 0x37
#define BMA250_OFFSET_FILT_X_REG 0x38
#define BMA250_OFFSET_FILT_Y_REG 0x39
#define BMA250_OFFSET_FILT_Z_REG 0x3A
#define BMA250_OFFSET_UNFILT_X_REG 0x3B
#define BMA250_OFFSET_UNFILT_Y_REG 0x3C
#define BMA250_OFFSET_UNFILT_Z_REG 0x3D
#define BMA250_SPARE_0_REG 0x3E
#define BMA250_SPARE_1_REG 0x3F
#define BMA250_ACC_X_LSB__POS 6
#define BMA250_ACC_X_LSB__LEN 2
#define BMA250_ACC_X_LSB__MSK 0xC0
#define BMA250_ACC_X_LSB__REG BMA250_X_AXIS_LSB_REG
#define BMA250_ACC_X_MSB__POS 0
#define BMA250_ACC_X_MSB__LEN 8
#define BMA250_ACC_X_MSB__MSK 0xFF
#define BMA250_ACC_X_MSB__REG BMA250_X_AXIS_MSB_REG
#define BMA250_ACC_Y_LSB__POS 6
#define BMA250_ACC_Y_LSB__LEN 2
#define BMA250_ACC_Y_LSB__MSK 0xC0
#define BMA250_ACC_Y_LSB__REG BMA250_Y_AXIS_LSB_REG
#define BMA250_ACC_Y_MSB__POS 0
#define BMA250_ACC_Y_MSB__LEN 8
#define BMA250_ACC_Y_MSB__MSK 0xFF
#define BMA250_ACC_Y_MSB__REG BMA250_Y_AXIS_MSB_REG
#define BMA250_ACC_Z_LSB__POS 6
#define BMA250_ACC_Z_LSB__LEN 2
#define BMA250_ACC_Z_LSB__MSK 0xC0
#define BMA250_ACC_Z_LSB__REG BMA250_Z_AXIS_LSB_REG
#define BMA250_ACC_Z_MSB__POS 0
#define BMA250_ACC_Z_MSB__LEN 8
#define BMA250_ACC_Z_MSB__MSK 0xFF
#define BMA250_ACC_Z_MSB__REG BMA250_Z_AXIS_MSB_REG
#define BMA250_RANGE_SEL__POS 0
#define BMA250_RANGE_SEL__LEN 4
#define BMA250_RANGE_SEL__MSK 0x0F
#define BMA250_RANGE_SEL__REG BMA250_RANGE_SEL_REG
#define BMA250_BANDWIDTH__POS 0
#define BMA250_BANDWIDTH__LEN 5
#define BMA250_BANDWIDTH__MSK 0x1F
#define BMA250_BANDWIDTH__REG BMA250_BW_SEL_REG
#define BMA250_EN_LOW_POWER__POS 6
#define BMA250_EN_LOW_POWER__LEN 1
#define BMA250_EN_LOW_POWER__MSK 0x40
#define BMA250_EN_LOW_POWER__REG BMA250_MODE_CTRL_REG
#define BMA250_EN_SUSPEND__POS 7
#define BMA250_EN_SUSPEND__LEN 1
#define BMA250_EN_SUSPEND__MSK 0x80
#define BMA250_EN_SUSPEND__REG BMA250_MODE_CTRL_REG
#define BMA250_GET_BITSLICE(regvar, bitname)\
((regvar & bitname##__MSK) >> bitname##__POS)
#define BMA250_SET_BITSLICE(regvar, bitname, val)\
((regvar & ~bitname##__MSK) | ((val<<bitname##__POS)&bitname##__MSK))
/* range and bandwidth */
#define BMA250_RANGE_2G 0
#define BMA250_RANGE_4G 1
#define BMA250_RANGE_8G 2
#define BMA250_RANGE_16G 3
#define BMA250_BW_7_81HZ 0x08
#define BMA250_BW_15_63HZ 0x09
#define BMA250_BW_31_25HZ 0x0A
#define BMA250_BW_62_50HZ 0x0B
#define BMA250_BW_125HZ 0x0C
#define BMA250_BW_250HZ 0x0D
#define BMA250_BW_500HZ 0x0E
#define BMA250_BW_1000HZ 0x0F
/* mode settings */
#define BMA250_MODE_NORMAL 0
#define BMA250_MODE_LOWPOWER 1
#define BMA250_MODE_SUSPEND 2
struct bma250acc{
s16 x,
y,
z;
} ;
struct bma250_data {
struct i2c_client *bma250_client;
atomic_t delay;
atomic_t enable;
unsigned char mode;
struct input_dev *input;
struct bma250acc value;
struct mutex value_mutex;
struct mutex enable_mutex;
struct mutex mode_mutex;
struct delayed_work work;
struct delayed_work pickup_timeout;
struct work_struct irq_work;
#ifdef CONFIG_HAS_EARLYSUSPEND
struct early_suspend early_suspend;
#endif
#if defined(CONFIG_HAS_EARLYSUSPEND) || defined(CONFIG_PM)
unsigned char range_state;
unsigned char bandwidth_state;
#endif
};
/* Addresses to scan */
static const unsigned short normal_i2c[] = {0x18,0x19,0x38,0x08,I2C_CLIENT_END};
static const int chip_id_value[4] = {0x02,0x03,0xf9,0xfa};
struct input_dev *this_dev =NULL;
extern flag_suspend;
static int old_value = 0;
static struct sensor_config_info config_info = {
.input_type = GSENSOR_TYPE,
};
#ifdef CONFIG_HAS_EARLYSUSPEND
static void bma250_early_suspend(struct early_suspend *h);
static void bma250_late_resume(struct early_suspend *h);
#endif
static int pickup_timeout_mins;
static ssize_t pickup_timeout_mins_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
if (strcmp(attr->attr.name, "pickup_timeout_mins") == 0)
return sprintf(buf, "%d\n", pickup_timeout_mins);
return -1;
}
static ssize_t pickup_timeout_mins_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t count)
{
int var;
sscanf(buf, "%du", &var);
if (strcmp(attr->attr.name, "pickup_timeout_mins") == 0)
pickup_timeout_mins = var;
return count;
}
static struct kobj_attribute bma250_interface_attribute =
__ATTR(pickup_timeout_mins, 0666,
pickup_timeout_mins_show, pickup_timeout_mins_store);
static struct attribute *bma250_interface_attrs[] = {
&bma250_interface_attribute.attr,
NULL
};
static struct attribute_group bma250_interface_attr_group = {
.attrs = bma250_interface_attrs
};
static struct kobject *bma250_interface;
/**
* gsensor_detect - Device detection callback for automatic device creation
* return value:
* = 0; success;
* < 0; err
*/
static int gsensor_detect(struct i2c_client *client, struct i2c_board_info *info)
{
struct i2c_adapter *adapter = client->adapter;
int ret , i = 0 ,retry = 2;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
if (config_info.twi_id == adapter->nr) {
while(retry--) {
ret = i2c_smbus_read_byte_data(client,BMA250_CHIP_ID_REG);
dprintk(DEBUG_INIT, "%s:addr = 0x%x, Read ID value is :%d\n",
__func__, client->addr, ret);
while((chip_id_value[i++]) && (i < 5)){
dprintk(DEBUG_INIT, "chip:%d\n", chip_id_value[i - 1]);
if((ret & 0x00FF) == chip_id_value[i - 1]){
strlcpy(info->type, SENSOR_NAME, I2C_NAME_SIZE);
return 0;
}
}
msleep(1);
}
dprintk(DEBUG_INIT, "%s:Bosch Sensortec Device not found,\
maybe the other gsensor equipment! \n",__func__);
return -ENODEV;
} else {
return -ENODEV;
}
}
static int bma250_smbus_read_byte(struct i2c_client *client,
unsigned char reg_addr, unsigned char *data)
{
s32 dummy;
dummy = i2c_smbus_read_byte_data(client, reg_addr);
if (dummy < 0)
return -1;
*data = dummy & 0x000000ff;
return 0;
}
static int bma250_smbus_write_byte(struct i2c_client *client,
unsigned char reg_addr, unsigned char *data)
{
s32 dummy;
dummy = i2c_smbus_write_byte_data(client, reg_addr, *data);
if (dummy < 0)
return -1;
return 0;
}
static void key_pess_powerkey_power(void)
{
input_report_key(this_dev, KEY_POWER, 1);
input_sync(this_dev);
// msleep(10);
// printk(" key_pess_powerkey_short ++++++++++++++++++++++++ \n");
input_report_key(this_dev, KEY_POWER, 0);
input_sync(this_dev);
flag_suspend = 0;
}
static int bma250_smbus_read_byte_block(struct i2c_client *client,
unsigned char reg_addr, unsigned char *data, unsigned char len)
{
s32 dummy;
dummy = i2c_smbus_read_i2c_block_data(client, reg_addr, len, data);
if (dummy < 0)
return -1;
return 0;
}
static int bma250_set_mode(struct i2c_client *client, unsigned char Mode)
{
int comres = 0;
unsigned char data1 = '\0';
if (client == NULL) {
comres = -1;
} else{
if (Mode < 3) {
comres = bma250_smbus_read_byte(client,
BMA250_EN_LOW_POWER__REG, &data1);
switch (Mode) {
case BMA250_MODE_NORMAL:
printk(KERN_INFO "Entering normal mode\n");
data1 = BMA250_SET_BITSLICE(data1,
BMA250_EN_LOW_POWER, 0);
data1 = BMA250_SET_BITSLICE(data1,
BMA250_EN_SUSPEND, 0);
struct bma250_data *bma250 = i2c_get_clientdata(client);
if (bma250 != NULL) {
cancel_delayed_work_sync(&bma250->pickup_timeout);
printk(KERN_INFO "Pickup timeout cancelled\n");
}
else {
printk(KERN_INFO "bma250 returned NULL");
}
break;
case BMA250_MODE_LOWPOWER:
printk(KERN_INFO "Entering low power mode\n");
data1 = BMA250_SET_BITSLICE(data1,
BMA250_EN_LOW_POWER, 1);
data1 = BMA250_SET_BITSLICE(data1,
BMA250_EN_SUSPEND, 0);
break;
case BMA250_MODE_SUSPEND:
printk(KERN_INFO "Entering suspend mode\n");
data1 = BMA250_SET_BITSLICE(data1,
BMA250_EN_LOW_POWER, 1);
data1 = BMA250_SET_BITSLICE(data1,
BMA250_EN_SUSPEND, 0);
break;
default:
break;
}
comres += bma250_smbus_write_byte(client,
BMA250_EN_LOW_POWER__REG, &data1);
} else{
comres = -1;
}
}
return comres;
}
static int bma250_get_mode(struct i2c_client *client, unsigned char *Mode)
{
int comres = 0;
if (client == NULL) {
comres = -1;
} else{
comres = bma250_smbus_read_byte(client,
BMA250_EN_LOW_POWER__REG, Mode);
*Mode = (*Mode) >> 6;
}
return comres;
}
static int bma250_set_range(struct i2c_client *client, unsigned char Range)
{
int comres = 0;
unsigned char data1 = '\0';
if (client == NULL) {
comres = -1;
} else{
if (Range < 4) {
comres = bma250_smbus_read_byte(client,
BMA250_RANGE_SEL_REG, &data1);
switch (Range) {
case 0:
data1 = BMA250_SET_BITSLICE(data1,
BMA250_RANGE_SEL, 0);
break;
case 1:
data1 = BMA250_SET_BITSLICE(data1,
BMA250_RANGE_SEL, 5);
break;
case 2:
data1 = BMA250_SET_BITSLICE(data1,
BMA250_RANGE_SEL, 8);
break;
case 3:
data1 = BMA250_SET_BITSLICE(data1,
BMA250_RANGE_SEL, 12);
break;
default:
break;
}
comres += bma250_smbus_write_byte(client,
BMA250_RANGE_SEL_REG, &data1);
} else{
comres = -1;
}
}
return comres;
}
static int bma250_get_range(struct i2c_client *client, unsigned char *Range)
{
int comres = 0;
unsigned char data = '\0';
if (client == NULL) {
comres = -1;
} else{
comres = bma250_smbus_read_byte(client, BMA250_RANGE_SEL__REG,
&data);
data = BMA250_GET_BITSLICE(data, BMA250_RANGE_SEL);
*Range = data;
}
return comres;
}
static int bma250_set_bandwidth(struct i2c_client *client, unsigned char BW)
{
int comres = 0;
unsigned char data = '\0';
int Bandwidth = 0;
if (client == NULL) {
comres = -1;
} else{
if (BW < 8) {
switch (BW) {
case 0:
Bandwidth = BMA250_BW_7_81HZ;
break;
case 1:
Bandwidth = BMA250_BW_15_63HZ;
break;
case 2:
Bandwidth = BMA250_BW_31_25HZ;
break;
case 3:
Bandwidth = BMA250_BW_62_50HZ;
break;
case 4:
Bandwidth = BMA250_BW_125HZ;
break;
case 5:
Bandwidth = BMA250_BW_250HZ;
break;
case 6:
Bandwidth = BMA250_BW_500HZ;
break;
case 7:
Bandwidth = BMA250_BW_1000HZ;
break;
default:
break;
}
comres = bma250_smbus_read_byte(client,
BMA250_BANDWIDTH__REG, &data);
data = BMA250_SET_BITSLICE(data, BMA250_BANDWIDTH,
Bandwidth);
comres += bma250_smbus_write_byte(client,
BMA250_BANDWIDTH__REG, &data);
} else{
comres = -1;
}
}
return comres;
}
static int bma250_get_bandwidth(struct i2c_client *client, unsigned char *BW)
{
int comres = 0;
unsigned char data = '\0';
if (client == NULL) {
comres = -1;
} else{
comres = bma250_smbus_read_byte(client, BMA250_BANDWIDTH__REG,
&data);
data = BMA250_GET_BITSLICE(data, BMA250_BANDWIDTH);
if (data <= 8) {
*BW = 0;
} else{
if (data >= 0x0F)
*BW = 7;
else
*BW = data - 8;
}
}
return comres;
}
static int bma250_read_accel_xyz(struct i2c_client *client,
struct bma250acc *acc)
{
int comres;
unsigned char data[6] = {0};
if (client == NULL) {
comres = -1;
} else{
comres = bma250_smbus_read_byte_block(client,
BMA250_ACC_X_LSB__REG, data, 6);
acc->x = BMA250_GET_BITSLICE(data[0], BMA250_ACC_X_LSB)
|(BMA250_GET_BITSLICE(data[1],
BMA250_ACC_X_MSB)<<BMA250_ACC_X_LSB__LEN);
acc->x = acc->x << (sizeof(short)*8-(BMA250_ACC_X_LSB__LEN
+ BMA250_ACC_X_MSB__LEN));
acc->x = acc->x >> (sizeof(short)*8-(BMA250_ACC_X_LSB__LEN
+ BMA250_ACC_X_MSB__LEN));
acc->y = BMA250_GET_BITSLICE(data[2], BMA250_ACC_Y_LSB)
| (BMA250_GET_BITSLICE(data[3],
BMA250_ACC_Y_MSB)<<BMA250_ACC_Y_LSB__LEN);
acc->y = acc->y << (sizeof(short)*8-(BMA250_ACC_Y_LSB__LEN
+ BMA250_ACC_Y_MSB__LEN));
acc->y = acc->y >> (sizeof(short)*8-(BMA250_ACC_Y_LSB__LEN
+ BMA250_ACC_Y_MSB__LEN));
acc->z = BMA250_GET_BITSLICE(data[4], BMA250_ACC_Z_LSB)
| (BMA250_GET_BITSLICE(data[5],
BMA250_ACC_Z_MSB)<<BMA250_ACC_Z_LSB__LEN);
acc->z = acc->z << (sizeof(short)*8-(BMA250_ACC_Z_LSB__LEN
+ BMA250_ACC_Z_MSB__LEN));
acc->z = acc->z >> (sizeof(short)*8-(BMA250_ACC_Z_LSB__LEN
+ BMA250_ACC_Z_MSB__LEN));
}
return comres;
}
static void bma250_work_func(struct work_struct *work)
{
struct bma250_data *bma250 = container_of((struct delayed_work *)work,
struct bma250_data, work);
static struct bma250acc acc;
unsigned long delay = msecs_to_jiffies(atomic_read(&bma250->delay));
bma250_read_accel_xyz(bma250->bma250_client, &acc);
input_report_abs(bma250->input, ABS_X, acc.x);
input_report_abs(bma250->input, ABS_Y, acc.y);
input_report_abs(bma250->input, ABS_Z, acc.z);
dprintk(DEBUG_DATA_INFO, "acc.x %d, acc.y %d, acc.z %d\n", acc.x, acc.y, acc.z);
// printk("acc.x %d, acc.y %d, acc.z %d bma250_work_func +++++++++++++++++++++++++++++++++++++++\n", acc.x, acc.y, acc.z);
if(flag_suspend == 1)
if( old_value < acc.z )
{
if( (old_value + 20) < acc.z)
{
key_pess_powerkey_power();
}
}
else
{
if( (old_value - 20) > acc.z)
{
key_pess_powerkey_power();
}
}
input_sync(bma250->input);
mutex_lock(&bma250->value_mutex);
bma250->value = acc;
mutex_unlock(&bma250->value_mutex);
old_value = acc.z;
schedule_delayed_work(&bma250->work, delay);
}
static ssize_t bma250_range_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned char data;
struct i2c_client *client = to_i2c_client(dev);
struct bma250_data *bma250 = i2c_get_clientdata(client);
if (bma250_get_range(bma250->bma250_client, &data) < 0)
return sprintf(buf, "Read error\n");
dprintk(DEBUG_CONTROL_INFO, "%d, %s\n", data, __FUNCTION__);
return sprintf(buf, "%d\n", data);
}
static ssize_t bma250_range_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned long data;
int error;
struct i2c_client *client = to_i2c_client(dev);
struct bma250_data *bma250 = i2c_get_clientdata(client);
error = strict_strtoul(buf, 10, &data);
if (error)
return error;
if (bma250_set_range(bma250->bma250_client, (unsigned char) data) < 0)
return -EINVAL;
return count;
}
static ssize_t bma250_bandwidth_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned char data;
struct i2c_client *client = to_i2c_client(dev);
struct bma250_data *bma250 = i2c_get_clientdata(client);
if (bma250_get_bandwidth(bma250->bma250_client, &data) < 0)
return sprintf(buf, "Read error\n");
dprintk(DEBUG_CONTROL_INFO, "%d, %s\n", data, __FUNCTION__);
return sprintf(buf, "%d\n", data);
}
static ssize_t bma250_bandwidth_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned long data;
int error;
struct i2c_client *client = to_i2c_client(dev);
struct bma250_data *bma250 = i2c_get_clientdata(client);
error = strict_strtoul(buf, 10, &data);
if (error)
return error;
if (bma250_set_bandwidth(bma250->bma250_client,
(unsigned char) data) < 0)
return -EINVAL;
return count;
}
static ssize_t bma250_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned char data;
struct i2c_client *client = to_i2c_client(dev);
struct bma250_data *bma250 = i2c_get_clientdata(client);
if (bma250_get_mode(bma250->bma250_client, &data) < 0)
return sprintf(buf, "Read error\n");
dprintk(DEBUG_CONTROL_INFO, "%d, %s\n", data, __FUNCTION__);
return sprintf(buf, "%d\n", data);
}
static ssize_t bma250_mode_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned long data;
int error;
struct i2c_client *client = to_i2c_client(dev);
struct bma250_data *bma250 = i2c_get_clientdata(client);
error = strict_strtoul(buf, 10, &data);
if (error)
return error;
if (bma250_set_mode(bma250->bma250_client, (unsigned char) data) < 0)
return -EINVAL;
return count;
}
static ssize_t bma250_value_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct input_dev *input = to_input_dev(dev);
struct bma250_data *bma250 = input_get_drvdata(input);
struct bma250acc acc_value;
mutex_lock(&bma250->value_mutex);
acc_value = bma250->value;
mutex_unlock(&bma250->value_mutex);
printk("x=%d, y=%d, z=%d ,%s\n", acc_value.x, acc_value.y, acc_value.z, __FUNCTION__);
return sprintf(buf, "%d %d %d\n", acc_value.x, acc_value.y,
acc_value.z);
}
static ssize_t bma250_delay_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct bma250_data *bma250 = i2c_get_clientdata(client);
dprintk(DEBUG_CONTROL_INFO, "%d, %s\n", atomic_read(&bma250->delay), __FUNCTION__);
return sprintf(buf, "%d\n", atomic_read(&bma250->delay));
}
static ssize_t bma250_delay_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned long data;
int error;
struct i2c_client *client = to_i2c_client(dev);
struct bma250_data *bma250 = i2c_get_clientdata(client);
error = strict_strtoul(buf, 10, &data);
if (error)
return error;
if (data > BMA250_MAX_DELAY)
data = BMA250_MAX_DELAY;
atomic_set(&bma250->delay, (unsigned int) data);
return count;
}
static ssize_t bma250_enable_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct bma250_data *bma250 = i2c_get_clientdata(client);
dprintk(DEBUG_CONTROL_INFO, "%d, %s\n", atomic_read(&bma250->enable), __FUNCTION__);
return sprintf(buf, "%d\n", atomic_read(&bma250->enable));
}
static void bma250_set_enable(struct device *dev, int enable)
{
struct i2c_client *client = to_i2c_client(dev);
struct bma250_data *bma250 = i2c_get_clientdata(client);
int pre_enable = atomic_read(&bma250->enable);
printk(" bma250_set_enable 888888888888888888888 \n");
mutex_lock(&bma250->enable_mutex);
if (enable) {
if (pre_enable ==0) {
bma250_set_mode(bma250->bma250_client,
BMA250_MODE_NORMAL);
schedule_delayed_work(&bma250->work,
msecs_to_jiffies(atomic_read(&bma250->delay)));
atomic_set(&bma250->enable, 1);
}
} else {
if (pre_enable ==1) {
printk(" 7777777888888888 \n");
// bma250_set_mode(bma250->bma250_client,
// BMA250_MODE_SUSPEND);
// cancel_delayed_work_sync(&bma250->work);
atomic_set(&bma250->enable, 0);
}
}
mutex_unlock(&bma250->enable_mutex);
}
static ssize_t bma250_enable_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned long data;
int error;
error = strict_strtoul(buf, 10, &data);
if (error)
return error;
if ((data == 0)||(data==1)) {
bma250_set_enable(dev,data);
}
return count;
}
static DEVICE_ATTR(range, S_IRUGO|S_IWUSR|S_IWGRP,
bma250_range_show, bma250_range_store);
static DEVICE_ATTR(bandwidth, S_IRUGO|S_IWUSR|S_IWGRP,
bma250_bandwidth_show, bma250_bandwidth_store);
static DEVICE_ATTR(mode, S_IRUGO|S_IWUSR|S_IWGRP,
bma250_mode_show, bma250_mode_store);
static DEVICE_ATTR(value, S_IRUGO,
bma250_value_show, NULL);
static DEVICE_ATTR(delay, S_IRUGO|S_IWUSR|S_IWGRP,
bma250_delay_show, bma250_delay_store);
static DEVICE_ATTR(enable, S_IRUGO|S_IWUSR|S_IWGRP,
bma250_enable_show, bma250_enable_store);
static struct attribute *bma250_attributes[] = {
&dev_attr_range.attr,
&dev_attr_bandwidth.attr,
&dev_attr_mode.attr,
&dev_attr_value.attr,
&dev_attr_delay.attr,
&dev_attr_enable.attr,
NULL
};
static struct attribute_group bma250_attribute_group = {
.attrs = bma250_attributes
};
static int bma250_input_init(struct bma250_data *bma250)
{
struct input_dev *dev;
int err;
dev = input_allocate_device();
if (!dev)
return -ENOMEM;
dev->name = SENSOR_NAME;
dev->id.bustype = BUS_I2C;
input_set_capability(dev, EV_ABS, ABS_MISC);
input_set_abs_params(dev, ABS_X, ABSMIN_2G, ABSMAX_2G, 0, 0);
input_set_abs_params(dev, ABS_Y, ABSMIN_2G, ABSMAX_2G, 0, 0);
input_set_abs_params(dev, ABS_Z, ABSMIN_2G, ABSMAX_2G, 0, 0);
input_set_drvdata(dev, bma250);
set_bit(EV_KEY, dev->evbit);
set_bit(EV_REL, dev->evbit);
set_bit(KEY_POWER, dev->keybit);
err = input_register_device(dev);
if (err < 0) {
input_free_device(dev);
return err;
}
this_dev = dev;
bma250->input = dev;
return 0;
}
static void bma250_input_delete(struct bma250_data *bma250)
{
struct input_dev *dev = bma250->input;
input_unregister_device(dev);
input_free_device(dev);
}
static void bma250_pickup_timeout_func(struct work_struct *work)
{
struct bma250_data *bma250 =
container_of((struct delayed_work *)work,
struct bma250_data, work);
struct i2c_client *client = bma250->bma250_client;
unsigned char data1 = '\0';
printk(KERN_INFO "Pickup timeout function called\n");
if (client != NULL) {
/* go into full suspend */
bma250_smbus_read_byte(client,
BMA250_EN_LOW_POWER__REG, &data1);
data1 = BMA250_SET_BITSLICE(data1,
BMA250_EN_LOW_POWER, 0);
data1 = BMA250_SET_BITSLICE(data1,
BMA250_EN_SUSPEND, 1);
bma250_smbus_write_byte(client,
BMA250_EN_LOW_POWER__REG, &data1);
/* indicate that no timeout is in progress */
printk(KERN_INFO "Pickup timeout complete\n");
}
else {
printk(KERN_INFO "Pickup timeout: no client\n");
}
}
static int bma250_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int err = 0;
struct bma250_data *data;
dprintk(DEBUG_INIT, "bma250: probe\n");
dprintk(DEBUG_INIT, "bma250 probe i2c address is 0x%x \n",
client->addr);
data = kzalloc(sizeof(struct bma250_data), GFP_KERNEL);
if (!data) {
err = -ENOMEM;
goto exit;
}
i2c_set_clientdata(client, data);
data->bma250_client = client;