static ssize_t
proximity_enable_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct gp2a_data *data = dev_get_drvdata(dev);
int value = 0;
int err = 0;
int16_t thrd;
u8 reg;
err = kstrtoint(buf, 10, &value);
if (err) {
pr_err("%s, kstrtoint failed.", __func__);
goto done;
}
if (value != 0 && value != 1)
goto done;
printk(KERN_INFO "[GP2A] proximity_enable_store : value=%d, offset=%d\n", value, data->offset_value);
if (data->proximity_enabled && !value) { /* Prox power off */
data->proximity_enabled = value;
disable_irq(data->irq);
proximity_onoff(0, data);
if (data->pdata->led_on)
data->pdata->led_on(0);
}
if (!data->proximity_enabled && value) { /* prox power on */
data->proximity_enabled = value;
if (data->pdata->led_on)
data->pdata->led_on(1);
msleep(5);
proximity_onoff(1, data);
thrd = gp2a_reg[3][1]+(data->offset_value);
THR_REG_LSB(thrd, reg);
gp2a_i2c_write(gp2a_reg[3][0], ®);
THR_REG_MSB(thrd, reg);
gp2a_i2c_write(gp2a_reg[4][0], ®);
thrd = gp2a_reg[5][1]+(data->offset_value);
THR_REG_LSB(thrd, reg);
gp2a_i2c_write(gp2a_reg[5][0], ®);
THR_REG_MSB(thrd, reg);
gp2a_i2c_write(gp2a_reg[6][0], ®);
input_report_abs(data->proximity_input_dev, ABS_DISTANCE, 1);
input_sync(data->proximity_input_dev);
enable_irq(data->irq);
}
done:
return count;
}
static int gp2a_prox_manual_offset(struct gp2a_data *data, u8 change_on)
{
struct file *cal_filp;
int err;
int16_t thrd;
u8 reg;
mm_segment_t old_fs;
data->offset_value = change_on;
/* update threshold */
thrd = gp2a_reg[3][1]+(data->offset_value);
THR_REG_LSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[3][0], ®);
THR_REG_MSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[4][0], ®);
thrd = gp2a_reg[5][1]+(data->offset_value);
THR_REG_LSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[5][0], ®);
THR_REG_MSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[6][0], ®);
/* calibration result */
data->cal_result = 1;
old_fs = get_fs();
set_fs(KERNEL_DS);
cal_filp = filp_open(CAL_PATH,
O_CREAT | O_TRUNC | O_WRONLY,
S_IRUGO | S_IWUSR | S_IWGRP);
if (IS_ERR(cal_filp)) {
pr_err("%s Can't open calibration file\n", __func__);
set_fs(old_fs);
err = PTR_ERR(cal_filp);
goto done;
}
err = cal_filp->f_op->write(cal_filp,
(char *)&data->offset_value, sizeof(int),
&cal_filp->f_pos);
if (err != sizeof(int)) {
pr_err("%s Can't write the cal data to file\n",
__func__);
err = -EIO;
}
filp_close(cal_filp, current->files);
done:
set_fs(old_fs);
return err;
}
static long gp2a_opt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int ret = 0;
short data = 0;
u8 thrd = 0;
u8 reg;
switch (cmd)
{
case PROX_IOC_SET_CALIBRATION:
{
printk(KERN_INFO "[GP2A] PROX_IOC_SET_CALIBRATION\n");
if (copy_from_user(&data, (void __user *)arg, sizeof(data)))
return -EFAULT;
ret = proximity_open_calibration(gp2a_opt_data);
if (ret < 0 && ret != -ENOENT)
{
printk(KERN_INFO "[GP2A] proximity_open_offset() failed\n");
}else {
thrd = gp2a_reg[3][1]+(gp2a_opt_data->offset_value);
THR_REG_LSB(thrd, reg);
gp2a_i2c_write(gp2a_reg[3][0], ®);
THR_REG_MSB(thrd, reg);
gp2a_i2c_write(gp2a_reg[4][0], ®);
thrd = gp2a_reg[5][1]+(gp2a_opt_data->offset_value);
THR_REG_LSB(thrd, reg);
gp2a_i2c_write(gp2a_reg[5][0], ®);
THR_REG_MSB(thrd, reg);
gp2a_i2c_write(gp2a_reg[6][0], ®);
}
break;
}
case PROX_IOC_GET_CALIBRATION:
{
printk(KERN_INFO "[GP2A] PROX_IOC_GET_CALIBRATION\n");
data = gp2a_opt_data->offset_value;
if (copy_to_user((void __user *)arg, &data, sizeof(data)))
return -EFAULT;
break;
}
default:
printk(KERN_ERR "Unknown IOCTL command");
ret = -ENOTTY;
break;
}
return ret;
}
static ssize_t
proximity_enable_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct gp2a_data *data = dev_get_drvdata(dev);
int value = 0;
char input;
int err = 0;
int16_t thrd;
u8 reg;
err = kstrtoint(buf, 10, &value);
if (err) {
pr_err("%s, kstrtoint failed.", __func__);
goto done;
}
if (value != 0 && value != 1)
goto done;
pr_info("%s, %d value = %d\n", __func__, __LINE__, value);
if (data->proximity_enabled && !value) { /* Prox power off */
disable_irq(data->irq);
proximity_onoff(0, data);
disable_irq_wake(data->irq);
if (data->pdata->led_on)
data->pdata->led_on(false);
}
if (!data->proximity_enabled && value) { /* prox power on */
if (data->pdata->led_on)
data->pdata->led_on(true);
usleep_range(1000, 1100);
proximity_onoff(1, data);
err = proximity_open_calibration(data);
if (err < 0 && err != -ENOENT)
pr_err("%s: proximity_open_offset() failed\n",
__func__);
else {
thrd = gp2a_reg[3][1]+(data->offset_value);
THR_REG_LSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[3][0], ®);
THR_REG_MSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[4][0], ®);
thrd = gp2a_reg[5][1]+(data->offset_value);
THR_REG_LSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[5][0], ®);
THR_REG_MSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[6][0], ®);
}
enable_irq_wake(data->irq);
msleep(160);
input = gpio_get_value_cansleep(data->pdata->p_out);
if (input == 0) {
input_report_abs(data->proximity_input_dev,
ABS_DISTANCE, 1);
input_sync(data->proximity_input_dev);
}
enable_irq(data->irq);
}
data->proximity_enabled = value;
done:
return count;
}
static int proximity_do_calibrate(struct gp2a_data *data,
bool do_calib, bool thresh_set)
{
struct file *cal_filp;
int err;
int xtalk_avg = 0;
int offset_change = 0;
uint16_t thrd = 0;
u8 reg;
mm_segment_t old_fs;
if (do_calib) {
if (thresh_set) {
/* for proximity_thresh_store */
data->offset_value =
data->threshold_high -
(gp2a_reg[6][1] << 8 | gp2a_reg[5][1]);
} else {
/* tap offset button */
/* get offset value */
xtalk_avg = proximity_adc_read(data);
offset_change =
(gp2a_reg[6][1] << 8 | gp2a_reg[5][1])
- DEFAULT_HI_THR;
if (xtalk_avg < offset_change) {
/* do not need calibration */
data->cal_result = 0;
err = 0;
goto no_cal;
}
data->offset_value = xtalk_avg - offset_change;
}
/* update threshold */
thrd = (gp2a_reg[4][1] << 8 | gp2a_reg[3][1])
+ (data->offset_value);
THR_REG_LSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[3][0], ®);
THR_REG_MSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[4][0], ®);
thrd = (gp2a_reg[4][1] << 8 | gp2a_reg[5][1])
+(data->offset_value);
THR_REG_LSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[5][0], ®);
THR_REG_MSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[6][0], ®);
/* calibration result */
if (!thresh_set)
data->cal_result = 1;
} else {
/* tap reset button */
data->offset_value = 0;
/* update threshold */
gp2a_i2c_write(data, gp2a_reg[3][0], &gp2a_reg[3][1]);
gp2a_i2c_write(data, gp2a_reg[4][0], &gp2a_reg[4][1]);
gp2a_i2c_write(data, gp2a_reg[5][0], &gp2a_reg[5][1]);
gp2a_i2c_write(data, gp2a_reg[6][0], &gp2a_reg[6][1]);
/* calibration result */
data->cal_result = 2;
}
old_fs = get_fs();
set_fs(KERNEL_DS);
cal_filp = filp_open(data->pdata->prox_cal_path,
O_CREAT | O_TRUNC | O_WRONLY,
S_IRUGO | S_IWUSR | S_IWGRP);
if (IS_ERR(cal_filp)) {
pr_err("%s: Can't open calibration file\n", __func__);
set_fs(old_fs);
err = PTR_ERR(cal_filp);
goto done;
}
err = cal_filp->f_op->write(cal_filp,
(char *)&data->offset_value, sizeof(int),
&cal_filp->f_pos);
if (err != sizeof(int)) {
pr_err("%s: Can't write the cal data to file\n", __func__);
err = -EIO;
}
filp_close(cal_filp, current->files);
done:
set_fs(old_fs);
no_cal:
return err;
}
static ssize_t gp2a_prox_enable_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct gp2a_data *data = dev_get_drvdata(dev);
int value;
int err = 0;
err = kstrtoint(buf, 10, &value);
if (err) {
pr_err("%s kstrtoint failed.", __func__);
goto done;
}
pr_info("%s %d value = %d\n", __func__, __LINE__, value);
if (value != SENSOR_DISABLE && value != SENSOR_ENABLE)
goto done;
if (value) {
if (data->prox_enabled == SENSOR_DISABLE) {
uint16_t thrd = 0;
u8 reg;
gp2a_prox_onoff(1, data);
err = gp2a_prox_open_calibration(data);
if (err < 0 && err != -ENOENT)
pr_err("%s gp2a_prox_open_offset() failed\n",
__func__);
else {
thrd = gp2a_reg[3][1]+(data->offset_value);
THR_REG_LSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[3][0], ®);
THR_REG_MSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[4][0], ®);
thrd = gp2a_reg[5][1]+(data->offset_value);
THR_REG_LSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[5][0], ®);
THR_REG_MSB(thrd, reg);
gp2a_i2c_write(data, gp2a_reg[6][0], ®);
}
enable_irq_wake(data->irq);
enable_irq(data->irq);
input_report_abs(data->prox_input_dev, ABS_DISTANCE, 1);
input_sync(data->prox_input_dev);
data->prox_enabled = SENSOR_ENABLE;
} else {
pr_err("%s already enabled\n", __func__);
}
} else {
if (data->prox_enabled == SENSOR_ENABLE) {
disable_irq(data->irq);
disable_irq_wake(data->irq);
gp2a_prox_onoff(0, data);
data->prox_enabled = SENSOR_DISABLE;
} else {
pr_err("%s already disabled\n", __func__);
}
}
done:
return count;
}
