static int apds990x_init_client(struct i2c_client *client)
{
struct apds990x_data *data = i2c_get_clientdata(client);
int err;
int id;
data->enable_ps_sensor = 1;
data->enable_als_sensor = 1;
err = apds990x_set_enable(client, 0);
if (err < 0)
return err;
id = i2c_smbus_read_byte_data(client, CMD_BYTE|APDS990x_ID_REG);
if (id == 0x20) {
APDS_DEBUG_LOG("APDS-9901\n");
}
else if (id == 0x29) {
APDS_DEBUG_LOG("APDS-990x\n");
}
else {
APDS_DEBUG_LOG("Neither APDS-9901 nor APDS-9901\n");
return -EIO;
}
apds990x_set_atime(client, 0xC0);
apds990x_set_ptime(client, 0xFF);
apds990x_set_wtime(client, 0xE8);
apds990x_set_ppcount(client, 0x04);
apds990x_set_config(client, 0);
apds990x_set_control(client, 0x20);
apds990x_set_pilt(client, 0);
apds990x_set_piht(client, guc_nv_proximity_sensor_near[0]);
data->ps_threshold = guc_nv_proximity_sensor_near[0];
data->ps_hysteresis_threshold = guc_nv_proximity_sensor_far[0];
apds990x_set_ailt(client, 0);
apds990x_set_aiht(client, 0xFFFF);
apds990x_set_pers(client, 0x22);
data->enable_ps_sensor = 0;
data->enable_als_sensor = 0;
err = apds990x_set_enable(client, 0);
return 0;
}
static int apds990x_init_client(struct i2c_client *client)
{
struct apds990x_data *data = i2c_get_clientdata(client);
int err;
int id;
err = apds990x_set_enable(client, 0);
if (err < 0)
return err;
id = i2c_smbus_read_byte_data(client, CMD_BYTE|APDS990x_ID_REG);
if (id == 0x20) {
printk("APDS-9901\n");
}
else if (id == 0x29) {
printk("APDS-990x\n");
}
else {
printk("Neither APDS-9901 nor APDS-9901\n");
return -EIO;
}
apds990x_set_atime(client, 0xDB); // 100.64ms ALS integration time
apds990x_set_ptime(client, 0xFF); // 2.72ms Prox integration time
apds990x_set_wtime(client, 0xFF); // 2.72ms Wait time
apds990x_set_ppcount(client, 0x08); // 8-Pulse for proximity
apds990x_set_config(client, 0); // no long wait
apds990x_set_control(client, 0x60); // 100mA, IR-diode, 1X PGAIN, 1X AGAIN
apds990x_set_pilt(client, 0); // init threshold for proximity
apds990x_set_piht(client, APDS990x_PS_DETECTION_THRESHOLD);
data->ps_threshold = APDS990x_PS_DETECTION_THRESHOLD;
data->ps_hysteresis_threshold = APDS990x_PS_HSYTERESIS_THRESHOLD;
apds990x_set_ailt(client, 0); // init threshold for als
apds990x_set_aiht(client, 0xFFFF);
apds990x_set_pers(client, 0x22); // 2 consecutive Interrupt persistence
// sensor is in disabled mode but all the configurations are preset
return 0;
}
static ssize_t apds990x_store_enable_ps_sensor(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct apds990x_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
unsigned long flags;
printk("%s: enable ps senosr ( %ld)\n", __func__, val);
if ((val != 0) && (val != 1)) {
printk("%s:store unvalid value=%ld\n", __func__, val);
return count;
}
if(val == 1) {
//turn on p sensor
if (data->enable_ps_sensor==0) {
data->enable_ps_sensor= 1;
apds990x_set_enable(client,0); /* Power Off */
apds990x_set_atime(client, 0xf6); /* 27.2ms */
apds990x_set_ptime(client, 0xff); /* 2.72ms */
apds990x_set_ppcount(client, 8); /* 8-pulse */
apds990x_set_control(client, data->control); /* 100mA, IR-diode, 1X PGAIN, 1X AGAIN */
apds990x_set_pilt(client, 0); // init threshold for proximity
apds990x_set_piht(client, APDS990x_PS_DETECTION_THRESHOLD);
data->ps_threshold = APDS990x_PS_DETECTION_THRESHOLD;
data->ps_hysteresis_threshold = APDS990x_PS_HSYTERESIS_THRESHOLD;
apds990x_set_ailt( client, 0);
apds990x_set_aiht( client, 0xffff);
apds990x_set_pers(client, 0x33); /* 3 persistence */
if (data->enable_als_sensor==0) {
/* we need this polling timer routine for sunlight canellation */
spin_lock_irqsave(&data->update_lock.wait_lock, flags);
/*
* If work is already scheduled then subsequent schedules will not
* change the scheduled time that's why we have to cancel it first.
*/
__cancel_delayed_work(&data->als_dwork);
schedule_delayed_work(&data->als_dwork, msecs_to_jiffies(data->als_poll_delay)); // 100ms
spin_unlock_irqrestore(&data->update_lock.wait_lock, flags);
}
apds990x_set_enable(client, 0x27); /* only enable PS interrupt */
}
}
else {
//turn off p sensor - kk 25 Apr 2011 we can't turn off the entire sensor, the light sensor may be needed by HAL
data->enable_ps_sensor = 0;
if (data->enable_als_sensor) {
// reconfigute light sensor setting
apds990x_set_enable(client,0); /* Power Off */
apds990x_set_atime(client, data->als_atime); /* previous als poll delay */
apds990x_set_ailt( client, 0);
apds990x_set_aiht( client, 0xffff);
apds990x_set_control(client, data->control); /* 100mA, IR-diode, 1X PGAIN, 1X AGAIN */
apds990x_set_pers(client, 0x33); /* 3 persistence */
apds990x_set_enable(client, 0x3); /* only enable light sensor */
spin_lock_irqsave(&data->update_lock.wait_lock, flags);
/*
* If work is already scheduled then subsequent schedules will not
* change the scheduled time that's why we have to cancel it first.
*/
__cancel_delayed_work(&data->als_dwork);
schedule_delayed_work(&data->als_dwork, msecs_to_jiffies(data->als_poll_delay)); // 100ms
spin_unlock_irqrestore(&data->update_lock.wait_lock, flags);
}
else {
apds990x_set_enable(client, 0);
spin_lock_irqsave(&data->update_lock.wait_lock, flags);
/*
* If work is already scheduled then subsequent schedules will not
* change the scheduled time that's why we have to cancel it first.
*/
__cancel_delayed_work(&data->als_dwork);
spin_unlock_irqrestore(&data->update_lock.wait_lock, flags);
}
}
return count;
}
static ssize_t apds990x_store_enable_ps_sensor(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct apds990x_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
unsigned long flags;
APDS_DEBUG_LOG("%s: enable ps senosr ( %ld)\n", __func__, val);
if ((val != 0) && (val != 1)) {
APDS_DEBUG_LOG("%s:store unvalid value=%ld\n", __func__, val);
return count;
}
if(val == 1) {
if (data->enable_ps_sensor<=0) {
data->enable_ps_sensor=1;
if (data->enable_als_sensor<=0) {
apds990x_set_enable(client,0);
apds990x_set_atime(client, 0xC0);
apds990x_set_ptime(client, 0xff);
apds990x_set_ppcount(client, 0x04);
apds990x_set_pers(client, 0x22);
apds990x_set_config(client, 0x00);
}
apds990x_set_wtime(client, 0xE5);
apds990x_set_ailt(client, guc_nv_photo_sensor_dark[0]);
apds990x_set_aiht(client, 0xffff);
apds990x_set_pilt(client, 0);
apds990x_set_piht(client, guc_nv_proximity_sensor_near[0]);
if( data->als_gain == APDS990X_ALS_GAIN_1X )
{
apds990x_set_control(client, 0x20);
}
else
{
apds990x_set_control(client, 0x20);
msleep(250);
}
data->ps_threshold = guc_nv_proximity_sensor_near[0];
data->ps_hysteresis_threshold = guc_nv_proximity_sensor_far[0];
data->ps_detection = 0;
apds990x_set_enable(client, 0x2F);
apds990x_enable_ps_irq(data);
} else
{
data->enable_ps_sensor++;
}
}
else {
data->enable_ps_sensor--;
if (data->enable_ps_sensor>0) {
;
} else if(data->enable_als_sensor) {
apds990x_disable_ps_irq(data);
apds990x_set_enable(client, 0x0A);
i2c_smbus_write_byte(client, CMD_SPECIAL|0x07);
apds990x_set_wtime(client, 0xE8);
apds990x_set_enable(client, 0xB);
if( data->ps_detection != 0 )
{
data->ps_detection = 0;
input_report_abs(data->input_dev_ps, ABS_DISTANCE, 0);
input_sync(data->input_dev_ps);
}
spin_lock_irqsave(&data->update_lock.wait_lock, flags);
__cancel_delayed_work(&data->als_dwork);
schedule_delayed_work(&data->als_dwork, msecs_to_jiffies(data->als_poll_delay));
spin_unlock_irqrestore(&data->update_lock.wait_lock, flags);
}
else {
apds990x_disable_ps_irq(data);
i2c_smbus_write_byte_data(client, CMD_BYTE|APDS990x_ENABLE_REG, 0x08);
i2c_smbus_write_byte(client, CMD_SPECIAL|0x07);
apds990x_set_wtime(client, 0xE8);
apds990x_set_enable(client, 0);
if( data->ps_detection != 0 )
{
data->ps_detection = 0;
input_report_abs(data->input_dev_ps, ABS_DISTANCE, 0);
input_sync(data->input_dev_ps);
}
}
}
return count;
}