static ssize_t light_enable_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
struct cm3663_data *cm3663 = dev_get_drvdata(dev);
bool new_value;
if (sysfs_streq(buf, "1"))
new_value = true;
else if (sysfs_streq(buf, "0"))
new_value = false;
else {
pr_err("%s: invalid value %d\n", __func__, *buf);
return -EINVAL;
}
mutex_lock(&cm3663->power_lock);
if (new_value && !(cm3663->power_state & LIGHT_ENABLED)) {
cm3663->power_state |= LIGHT_ENABLED;
cm3663_light_enable(cm3663);
} else if (!new_value && (cm3663->power_state & LIGHT_ENABLED)) {
cm3663_light_disable(cm3663);
cm3663->power_state &= ~LIGHT_ENABLED;
}
mutex_unlock(&cm3663->power_lock);
return size;
}
static int cm3663_i2c_remove(struct i2c_client *client)
{
struct cm3663_data *cm3663 = i2c_get_clientdata(client);
device_remove_file(cm3663->switch_cmd_dev, &dev_attr_adc);
device_remove_file(cm3663->proximity_dev, &dev_attr_prox_cal);
device_remove_file(cm3663->proximity_dev, &dev_attr_prox_avg);
device_remove_file(cm3663->proximity_dev, &dev_attr_state);
device_destroy(sensors_class, 0);
sysfs_remove_group(&cm3663->light_input_dev->dev.kobj,
&light_attribute_group);
input_unregister_device(cm3663->light_input_dev);
sysfs_remove_group(&cm3663->proximity_input_dev->dev.kobj,
&proximity_attribute_group);
input_unregister_device(cm3663->proximity_input_dev);
free_irq(cm3663->irq, NULL);
if (cm3663->power_state) {
if (cm3663->power_state & LIGHT_ENABLED)
cm3663_light_disable(cm3663);
if (cm3663->power_state & PROXIMITY_ENABLED) {
cm3663_i2c_write(cm3663, REGS_PS_CMD, 0x01);
cm3663->pdata->proximity_power(0);
}
}
destroy_workqueue(cm3663->light_wq);
destroy_workqueue(cm3663->prox_wq);
mutex_destroy(&cm3663->power_lock);
wake_lock_destroy(&cm3663->prx_wake_lock);
kfree(cm3663);
return 0;
}
static ssize_t poll_delay_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
struct cm3663_data *cm3663 = dev_get_drvdata(dev);
int64_t new_delay;
int err;
err = strict_strtoll(buf, 10, &new_delay);
if (err < 0)
return err;
printk(KERN_INFO "[CM3663] poll_delay_store : new_delay=%lld\n", new_delay);
mutex_lock(&cm3663->power_lock);
if (new_delay != ktime_to_ns(cm3663->light_poll_delay)) {
cm3663->light_poll_delay = ns_to_ktime(new_delay);
if (cm3663->power_state & LIGHT_ENABLED) {
cm3663_light_disable(cm3663);
cm3663_light_enable(cm3663);
}
}
mutex_unlock(&cm3663->power_lock);
return size;
}
/*
* sysfs interface
* Turn on or off the light sensor
*/
static ssize_t cm3663_light_enable_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
struct cm3663_data *cm3663 = dev_get_drvdata(dev);
int enable;
if (strict_strtoul(buf, 10, &enable))
return -EINVAL;
int enabled = cm3663->power_state & LIGHT_ENABLED;
if (enable == enabled)
return size;
mutex_lock(&cm3663->power_lock);
if (enable) {
if (!(cm3663->power_state)) {
pr_info("\n light_power true\n");
cm3663->pdata->proximity_power(true);
}
cm3663->power_state |= LIGHT_ENABLED;
cm3663_light_enable(cm3663);
if (!((cm3663->power_state)&PROXIMITY_ENABLED))
cm3663_i2c_write(cm3663, REGS_PS_CMD, 0x01);
} else {
cm3663_light_disable(cm3663);
cm3663->power_state &= ~LIGHT_ENABLED;
if (!((cm3663->power_state)&PROXIMITY_ENABLED))
pr_info("\n light_power false\n");
}
mutex_unlock(&cm3663->power_lock);
return size;
}
static int cm3663_suspend(struct device *dev)
{
/* We disable power only if proximity is disabled. If proximity
is enabled, we leave power on because proximity is allowed
to wake up device. We remove power without changing
cm3663->power_state because we use that state in resume.
*/
struct i2c_client *client = to_i2c_client(dev);
struct cm3663_data *cm3663 = i2c_get_clientdata(client);
if (cm3663->power_state & LIGHT_ENABLED)
cm3663_light_disable(cm3663);
return 0;
}
static ssize_t lightsensor_file_state_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct cm3663_data *cm3663 = dev_get_drvdata(dev);
int adc = 0;
if (!(cm3663->power_state & LIGHT_ENABLED))
cm3663_light_enable(cm3663);
adc = lightsensor_get_alsvalue(cm3663);
if (!(cm3663->power_state & LIGHT_ENABLED))
cm3663_light_disable(cm3663);
return sprintf(buf, "%d\n", adc);
}
