/*For Factory Test Mode*/
static ssize_t lightsensor_file_state_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct bh1721_data *bh1721 = dev_get_drvdata(dev);
unsigned int result;
/*
* POWER ON command is possible to omit.
*/
printk("[%s] lightsensor_file_state_show \n", __func__);
bh1721_write_command(bh1721->i2c_client, &POWER_ON);
bh1721_write_command(bh1721->i2c_client, &H_RESOLUTION_2);
/* Maximum measurement time */
msleep(180);
bh1721_read_value(bh1721->i2c_client, bh1721->illuminance_data);
bh1721_write_command(bh1721->i2c_client, &POWER_DOWN);
result = bh1721->illuminance_data[0] << 8 | bh1721->illuminance_data[1];
result = (result*10)/12;
/* apply hysteresis */
printk("[%s] original lux = %u\n", __func__, result);
result = get_next_level(result);
printk("[%s] representative lux = %u\n", __func__, result);
return sprintf(buf, "%d\n", result);
}
static ssize_t lightsensor_lux_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned int result;
struct bh1721_data *bh1721 = dev_get_drvdata(dev);
/*
* POWER ON command is possible to omit.
*/
if (!(bh1721->power_state & LIGHT_ENABLED)){
if((bh1721_write_command(bh1721->i2c_client, &POWER_ON))>0)
light_enable = ON;
bh1721_write_command(bh1721->i2c_client, &AUTO_RESOLUTION_1);
/* Maximum measurement time */
msleep(180);
}
bh1721_read_value(bh1721->i2c_client, bh1721->illuminance_data);
if ( !(bh1721->power_state & LIGHT_ENABLED) ){
if((bh1721_write_command(bh1721->i2c_client, &POWER_DOWN))>0)
light_enable = OFF;
}
result = bh1721->illuminance_data[0] << 8 | bh1721->illuminance_data[1];
result = (result * 10) / 12;
result = result * 139 / 13;
return sprintf(buf, "%d\n", result);
}
static void bh1721_light_enable(struct bh1721_data *bh1721)
{
printk("[Light Sensor] starting poll timer, delay %lldns\n",
ktime_to_ns(bh1721->light_poll_delay));
hrtimer_start(&bh1721->timer, bh1721->light_poll_delay, HRTIMER_MODE_REL);
if((bh1721_write_command(bh1721->i2c_client, &POWER_ON))>0)
printk("[Light Sensor] Power ON");
if((bh1721_write_command(bh1721->i2c_client, &AUTO_RESOLUTION_1 ))>0)
printk("[Light Sensor] auto resoulution ON");
}
static ssize_t lightsensor_file_cmd_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
int mode,ret;
ret=0;
sscanf(buf,"%d",&mode);
if(mode ==0)
{
bh1721_write_command(chip->client, &POWER_DOWN);
light_enable = OFF;
}
else if(mode ==1)
{
bh1721_write_command(chip->client, &POWER_ON);
light_enable = ON;
}
return count;
}
static void bh1721_light_disable(struct bh1721_data *bh1721)
{
printk("[Light Sensor] cancelling poll timer\n");
hrtimer_cancel(&bh1721->timer);
cancel_work_sync(&bh1721->work_light);
if((bh1721_write_command(bh1721->i2c_client, &POWER_DOWN))>0)
printk("[Light Sensor] Power off");
}
/*For Factory Test Mode*/
static ssize_t lightsensor_file_state_show(struct device *dev, struct device_attribute *attr, char *buf)
{
unsigned int result;
/*
* POWER ON command is possible to omit.
*/
if((bh1721_write_command(chip->client, &POWER_ON))>0)
light_enable = ON;
bh1721_write_command(chip->client, &H_RESOLUTION_2);
/* Maximum measurement time */
msleep(180);
bh1721_read_value(chip->client, chip->illuminance_data);
if((bh1721_write_command(chip->client, &POWER_DOWN))>0)
light_enable = OFF;
result = chip->illuminance_data[0] << 8 | chip->illuminance_data[1];
result = (result*10)/12;
return sprintf(buf, "%d\n", result);
}
/*For Factory Test Mode*/
static ssize_t bh1721_show_illuminance(struct device *dev, struct device_attribute *attr, char *buf)
{
struct bh1721_data *bh1721 = dev_get_drvdata(dev);
unsigned int result;
/*
* POWER ON command is possible to omit.
*/
if((bh1721_write_command(bh1721->i2c_client, &POWER_ON))>0)
light_enable = ON;
bh1721_write_command(bh1721->i2c_client, &AUTO_RESOLUTION_1);
/* Maximum measurement time */
msleep(180);
bh1721_read_value(bh1721->i2c_client, bh1721->illuminance_data);
if((bh1721_write_command(bh1721->i2c_client, &POWER_DOWN))>0)
light_enable = OFF;
result = bh1721->illuminance_data[0] << 8 | bh1721->illuminance_data[1];
return sprintf(buf, "%d\n", result);
}
static unsigned int lightsensor_get_adcvalue(struct bh1721_data *bh1721)
{
unsigned int result;
bh1721_write_command(bh1721->i2c_client, &H_RESOLUTION_2);
/* Maximum measurement time */
msleep(180);
bh1721_read_value(bh1721->i2c_client, bh1721->illuminance_data);
result = bh1721->illuminance_data[0] << 8 | bh1721->illuminance_data[1];
result = (result*10)/12;
result = get_next_level(result);
return result;
}
static int bh1721_suspend(struct i2c_client *client, pm_message_t mesg)
{
bh1721_write_command(chip->client, &POWER_DOWN);
return 0;
}
