static int __init stmvl6180_init(void)
{
struct stmvl6180_data *vl6180_data = NULL;
int ret = 0;
vl6180_dbgmsg("Enter\n");
vl6180_data = kzalloc(sizeof(struct stmvl6180_data), GFP_KERNEL);
if (!vl6180_data) {
vl6180_errmsg("%d failed no memory\n", __LINE__);
return -ENOMEM;
}
/* assign to global variable */
gp_vl6180_data = vl6180_data;
vl6180_data->tof_start = stmvl6180_start;
vl6180_data->tof_stop = stmvl6180_stop;
/* assign function table */
vl6180_data->pmodule_func_tbl = &stmvl6180_module_func_tbl;
/* client specific init function */
ret = vl6180_data->pmodule_func_tbl->init();
if (!ret)
ret = stmvl6180_setup(vl6180_data);
if (ret) {
kfree(vl6180_data);
gp_vl6180_data = NULL;
vl6180_errmsg("%d failed with %d\n", __LINE__, ret);
}
vl6180_dbgmsg("End\n");
return ret;
}
static int32_t stmvl6180_vreg_control(struct cci_data *data, int config)
{
int rc = 0, i, cnt;
struct msm_tof_vreg *vreg_cfg;
vl6180_dbgmsg("Enter\n");
vreg_cfg = &data->vreg_cfg;
cnt = vreg_cfg->num_vreg;
vl6180_dbgmsg("num_vreg: %d\n", cnt);
if (!cnt) {
vl6180_errmsg("failed %d\n", __LINE__);
return 0;
}
if (cnt >= MSM_TOF_MAX_VREGS) {
vl6180_errmsg("failed %d cnt %d\n", __LINE__, cnt);
return -EINVAL;
}
for (i = 0; i < cnt; i++) {
rc = msm_camera_config_single_vreg(&(data->pdev->dev), &vreg_cfg->cam_vreg[i], (struct regulator **)&vreg_cfg->data[i], config);
}
vl6180_dbgmsg("EXIT rc =%d\n", rc);
return rc;
}
static ssize_t stmvl6180_store_enable_ps_sensor(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct stmvl6180_data *data = gp_vl6180_data;
unsigned long val = simple_strtoul(buf, NULL, 10);
if ((val != 0) && (val != 1)) {
vl6180_errmsg("store unvalid value=%ld\n", val);
return count;
}
vl6180_dbgmsg("Enter, enable ps senosr ( %ld)\n", val);
mutex_lock(&data->work_mutex);
vl6180_dbgmsg("enable_ps_sensor old flag:%d\n", data->enable_ps_sensor);
if (val == 1) {
/* turn on tof sensor */
if (data->enable_ps_sensor == 0)
stmvl6180_start(data, 3, NORMAL_MODE);
} else {
/* turn off tof sensor */
if (data->enable_ps_sensor == 1) {
data->enable_ps_sensor = 0;
/* to stop */
stmvl6180_stop(data);
}
}
mutex_unlock(&data->work_mutex);
vl6180_dbgmsg("End\n");
return count;
}
int stmvl6180_power_up_cci(void *cci_object, unsigned int *preset_flag)
{
int ret = 0;
struct cci_data *data = (struct cci_data *)cci_object;
vl6180_dbgmsg("Enter");
/* need to init cci first */
ret = stmvl6180_cci_init(data);
if (ret) {
vl6180_errmsg("stmvl6180_stmvl6180_cci_init failed %d\n", __LINE__);
return ret;
}
/* actual power up */
if (data && data->device_type == MSM_CAMERA_PLATFORM_DEVICE) {
ret = stmvl6180_vreg_control(data, 1);
if (ret < 0) {
vl6180_errmsg("stmvl6180_vreg_control failed %d\n", __LINE__);
return ret;
}
gpio_set_value(data->en_gpio,STMVL6180_GPIO_ENABLE);
}
msleep(3);
data->power_up = 1;
*preset_flag = 1;
vl6180_dbgmsg("End\n");
return ret;
}
int stmvl6180_power_down_cci(void *cci_object)
{
int ret = 0;
struct cci_data *data = (struct cci_data *)cci_object;
vl6180_dbgmsg("Enter\n");
if (data->power_up) {
/* need to release cci first */
ret = data->client->i2c_func_tbl->i2c_util(data->client, MSM_CCI_RELEASE);
if (ret < 0) {
vl6180_errmsg("CCI Release failed rc %d\n", ret);
}
/* actual power down */
if (data->device_type == MSM_CAMERA_PLATFORM_DEVICE) {
gpio_set_value(data->en_gpio,STMVL6180_GPIO_DISABLE);
ret = stmvl6180_vreg_control(data, 0);
if (ret < 0) {
vl6180_errmsg("stmvl6180_vreg_control failed %d\n", __LINE__);
return ret;
}
}
}
data->power_up = 0;
vl6180_dbgmsg("End\n");
return ret;
}
int stmvl6180_power_down_i2c(void *i2c_object)
{
int ret = 0;
#ifndef STM_TEST
struct i2c_data *data = (struct i2c_data *)i2c_object;
#endif
vl6180_dbgmsg("Enter\n");
#ifndef STM_TEST
msleep(3);
if (data != NULL) {
ret = regulator_disable(data->vdd);
if (ret < 0) {
pr_err("%s: failed to disable st vdd\n", __func__);
return ret;
}
ret = regulator_disable(data->vcc);
if (ret < 0) {
pr_err("%s: failed to disable st vcc\n", __func__);
return ret;
}
gpio_set_value(data->cs_gpio_num, 0);
data->power_up = 0;
}
#endif
vl6180_dbgmsg("End\n");
return ret;
}
int stmvl6180_power_up_i2c(void *i2c_object, unsigned int *preset_flag)
{
int ret = 0;
#ifndef STM_TEST
struct i2c_data *data = (struct i2c_data *)i2c_object;
#endif
vl6180_dbgmsg("Enter\n");
/* actual power on */
#ifndef STM_TEST
if (data != NULL) {
ret = regulator_set_optimum_mode(data->vdd, 100000);
pr_info("%s: stmvl6180 set L18 to mode %d\n", __func__, ret);
ret = regulator_enable(data->vdd);
if (ret < 0) {
pr_err("%s: failed to enable st vdd\n", __func__);
return ret;
}
ret = regulator_enable(data->vcc);
if ( ret < 0) {
pr_err("%s: failed to enable st vcc\n", __func__);
return ret;
}
gpio_set_value(data->cs_gpio_num, 1);
/* Delay 3 ms to wait for chip power up */
msleep(3);
data->power_up = 1;
}
*preset_flag = 1;
#endif
vl6180_dbgmsg("End\n");
return ret;
}
static int stmvl6180_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int rc = 0;
struct stmvl6180_data *vl6180_data = NULL;
struct i2c_data *data = NULL;
vl6180_dbgmsg("Enter\n");
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE)) {
rc = -EIO;
return rc;
}
vl6180_data = stmvl6180_getobject();
if (vl6180_data)
data = &(vl6180_data->client_object);
data->client = client;
/* setup regulator */
stmvl6180_parse_vdd(&data->client->dev, data);
/* setup client data */
i2c_set_clientdata(client, vl6180_data);
/* setup platform i2c client */
i2c_setclient((void *)client);
vl6180_dbgmsg("End\n");
return rc;
}
/*
* Initialization function
*/
static int stmvl6180_init_client(struct stmvl6180_data *data)
{
uint8_t id = 0, module_major = 0, module_minor = 0;
uint8_t model_major = 0, model_minor = 0;
uint8_t i = 0, val;
vl6180_dbgmsg("Enter\n");
/* Read Model ID */
VL6180x_RdByte(vl6180x_dev, VL6180_MODEL_ID_REG, &id);
vl6180_errmsg("read MODLE_ID: 0x%x\n", id);
if (id == 0xb4) {
vl6180_errmsg("STM VL6180 Found\n");
} else if (id == 0) {
vl6180_errmsg("Not found STM VL6180\n");
}
/* Read Model Version */
VL6180x_RdByte(vl6180x_dev, VL6180_MODEL_REV_MAJOR_REG, &model_major);
model_major &= 0x07;
VL6180x_RdByte(vl6180x_dev, VL6180_MODEL_REV_MINOR_REG, &model_minor);
model_minor &= 0x07;
vl6180_errmsg("STM VL6180 Model Version : %d.%d\n", model_major, model_minor);
/* Read Module Version */
VL6180x_RdByte(vl6180x_dev, VL6180_MODULE_REV_MAJOR_REG, &module_major);
VL6180x_RdByte(vl6180x_dev, VL6180_MODULE_REV_MINOR_REG, &module_minor);
vl6180_errmsg("STM VL6180 Module Version : %d.%d\n", module_major, module_minor);
/* Read Identification */
printk("STM VL6180 Serial Numbe: ");
for (i = 0; i <= (VL6180_FIRMWARE_REVISION_ID_REG - VL6180_REVISION_ID_REG); i++) {
VL6180x_RdByte(vl6180x_dev, (VL6180_REVISION_ID_REG + i), &val);
printk("0x%x-", val);
}
printk("\n");
/* intialization */
if (data->reset) {
/* no need
vl6180_dbgmsg("WaitDeviceBoot");
VL6180x_WaitDeviceBooted(vl6180x_dev);
*/
/* only called if device being reset, otherwise data being overwrite */
vl6180_dbgmsg("Init data!");
VL6180x_InitData(vl6180x_dev); /* only called if device being reset */
data->reset = 0;
}
/* set user calibration data - need to be called after VL6180x_InitData */
#ifdef CALIBRATION_FILE
stmvl6180_read_calibration_file();
#endif
vl6180_dbgmsg("End\n");
return 0;
}
static int32_t stmvl6180_platform_probe(struct platform_device *pdev)
{
struct stmvl6180_data *vl6180_data = NULL;
struct cci_data *data = NULL;
int32_t rc = 0;
vl6180_dbgmsg("Enter\n");
if (!pdev->dev.of_node) {
vl6180_errmsg("of_node NULL\n");
return -EINVAL;
}
vl6180_data = stmvl6180_getobject();
if (NULL == vl6180_data) {
vl6180_errmsg("Object not found!\n");
return -EINVAL;
}
data = &(vl6180_data->client_object);
if (!data) {
vl6180_errmsg("data NULL\n");
return -EINVAL;
}
data->client = (struct msm_camera_i2c_client *)&data->g_client;
/* setup platform i2c client */
i2c_setclient((void *)data->client);
/* Set platform device handle */
data->subdev_ops = &msm_tof_subdev_ops;
data->pdev = pdev;
rc = stmvl6180_get_dt_data(&pdev->dev, data);
if (rc < 0) {
vl6180_errmsg("%d, failed rc %d\n", __LINE__, rc);
return rc;
}
data->subdev_id = pdev->id;
rc = gpio_request_one(data->en_gpio,GPIOF_OUT_INIT_LOW,
"stmvl6180_ldaf_en_gpio");
if(rc) {
vl6180_errmsg("failed gpio request %u\n",data->en_gpio);
return -EINVAL;
}
/* ldaf_int not used */
data->int_gpio = -1;
/* Set device type as platform device */
data->device_type = MSM_CAMERA_PLATFORM_DEVICE;
data->subdev_initialized = FALSE;
vl6180_dbgmsg("End\n");
return rc;
}
void stmvl6180_exit_cci(void *cci_object)
{
struct cci_data *data = (struct cci_data *)cci_object;
vl6180_dbgmsg("Enter\n");
if (data && data->client->cci_client)
kfree(data->client->cci_client);
vl6180_dbgmsg("End\n");
}
static int stmvl6180_remove(struct i2c_client *client)
{
struct stmvl6180_data *data = stmvl6180_getobject();
vl6180_dbgmsg("Enter\n");
/* Power down the device */
stmvl6180_power_down_i2c((void *)&data->client_object);
vl6180_dbgmsg("End\n");
return 0;
}
int stmvl6180_init_cci(void)
{
int ret = 0;
vl6180_dbgmsg("Enter\n");
/* register as a platform device */
ret = platform_driver_register(&stmvl6180_platform_driver);
if (ret)
vl6180_errmsg("%d, error ret:%d\n", __LINE__, ret);
vl6180_dbgmsg("End\n");
return ret;
}
static int stmvl6180_start(struct stmvl6180_data *data, uint8_t scaling, init_mode_e mode)
{
int rc = 0;
vl6180_dbgmsg("Enter\n");
/* Power up */
rc = data->pmodule_func_tbl->power_up(&data->client_object, &data->reset);
if (rc) {
vl6180_errmsg("%d,error rc %d\n", __LINE__, rc);
return rc;
}
/* init */
rc = stmvl6180_init_client(data);
if (rc) {
vl6180_errmsg("%d, error rc %d\n", __LINE__, rc);
data->pmodule_func_tbl->power_down(&data->client_object);
return -EINVAL;
}
/* prepare */
VL6180x_Prepare(vl6180x_dev);
VL6180x_UpscaleSetScaling(vl6180x_dev, scaling);
/* check mode */
if (mode != NORMAL_MODE) {
#if VL6180x_WRAP_AROUND_FILTER_SUPPORT
/* turn off wrap around filter */
VL6180x_FilterSetState(vl6180x_dev, 0);
#endif
VL6180x_SetXTalkCompensationRate(vl6180x_dev, 0);
VL6180x_UpdateByte(vl6180x_dev, SYSRANGE_RANGE_CHECK_ENABLES,
~RANGE_CHECK_RANGE_ENABLE_MASK, 0);
}
if (mode == OFFSETCALIB_MODE)
VL6180x_SetOffsetCalibrationData(vl6180x_dev, 0);
/* start - single shot mode */
VL6180x_RangeSetSystemMode(vl6180x_dev, MODE_START_STOP|MODE_SINGLESHOT);
data->ps_is_singleshot = 1;
data->enable_ps_sensor = 1;
/* enable work handler */
stmvl6180_schedule_handler(data);
vl6180_dbgmsg("End\n");
return rc;
}
static void __exit stmvl6180_exit(void)
{
vl6180_dbgmsg("Enter\n");
if (gp_vl6180_data) {
input_unregister_device(gp_vl6180_data->input_dev_ps);
input_free_device(gp_vl6180_data->input_dev_ps);
#ifdef USE_INT
free_irq(data->irq, gp_vl6180_data);
#endif
sysfs_remove_group(gp_vl6180_data->range_kobj, &stmvl6180_attr_group);
gp_vl6180_data->pmodule_func_tbl->deinit(&gp_vl6180_data->client_object);
kfree(gp_vl6180_data);
gp_vl6180_data = NULL;
}
vl6180_dbgmsg("End\n");
}
int stmvl6180_init_i2c(void)
{
int ret = 0;
#ifdef STM_TEST
struct i2c_client *client = NULL;
struct i2c_adapter *adapter;
struct i2c_board_info info = {
.type = "stmvl6180",
.addr = VL6180_I2C_ADDRESS,
};
#endif
vl6180_dbgmsg("Enter\n");
/* register as a i2c client device */
ret = i2c_add_driver(&stmvl6180_driver);
if (ret)
vl6180_errmsg("%d erro ret:%d\n", __LINE__, ret);
#ifdef STM_TEST
if (!ret) {
adapter = i2c_get_adapter(4);
if (!adapter)
ret = -EINVAL;
else
client = i2c_new_device(adapter, &info);
if (!client)
ret = -EINVAL;
}
#endif
vl6180_dbgmsg("End with rc:%d\n", ret);
return ret;
}
void stmvl6180_exit_i2c(void *i2c_object)
{
vl6180_dbgmsg("Enter\n");
i2c_del_driver(&stmvl6180_driver);
vl6180_dbgmsg("End\n");
}
static int stmvl6180_stop(struct stmvl6180_data *data)
{
int rc = 0;
vl6180_dbgmsg("Enter\n");
/* stop - if continuous mode */
if (data->ps_is_singleshot == 0)
VL6180x_RangeSetSystemMode(vl6180x_dev, MODE_START_STOP);
/* clean interrupt */
VL6180x_RangeClearInterrupt(vl6180x_dev);
/* cancel work handler */
stmvl6180_cancel_handler(data);
/* power down */
rc = data->pmodule_func_tbl->power_down(&data->client_object);
if (rc) {
vl6180_errmsg("%d, error rc %d\n", __LINE__, rc);
return rc;
}
vl6180_dbgmsg("End\n");
return rc;
}
static int stmvl6180_cci_init(struct cci_data *data)
{
int rc = 0;
struct msm_camera_cci_client *cci_client = data->client->cci_client;
if (FALSE == data->subdev_initialized) {
data->client->i2c_func_tbl = &msm_sensor_cci_func_tbl;
data->client->cci_client = kzalloc(sizeof(struct msm_camera_cci_client), GFP_KERNEL);
if (!data->client->cci_client) {
vl6180_errmsg("%d, failed no memory\n", __LINE__);
return -ENOMEM;
}
cci_client = data->client->cci_client;
cci_client->cci_subdev = msm_cci_get_subdev();
cci_client->cci_i2c_master = data->cci_master;
v4l2_subdev_init(&data->msm_sd.sd, data->subdev_ops);
v4l2_set_subdevdata(&data->msm_sd.sd, data);
data->msm_sd.sd.internal_ops = &msm_tof_internal_ops;
data->msm_sd.sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
snprintf(data->msm_sd.sd.name, ARRAY_SIZE(data->msm_sd.sd.name), "msm_tof");
media_entity_init(&data->msm_sd.sd.entity, 0, NULL, 0);
data->msm_sd.sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV;
data->msm_sd.sd.entity.group_id = MSM_CAMERA_SUBDEV_TOF;
data->msm_sd.close_seq = MSM_SD_CLOSE_2ND_CATEGORY | 0x2;
msm_sd_register(&data->msm_sd);
msm_tof_v4l2_subdev_fops = v4l2_subdev_fops;
/*
#ifdef CONFIG_COMPAT
msm_tof_v4l2_subdev_fops.compat_ioctl32 = msm_tof_subdev_fops_ioctl;
#endif
*/
data->msm_sd.sd.devnode->fops = &msm_tof_v4l2_subdev_fops;
data->subdev_initialized = TRUE;
}
cci_client->sid = data->slave_addr;
cci_client->i2c_freq_mode = data->i2c_freq_mode;
cci_client->retries = 3;
cci_client->id_map = 0;
cci_client->cci_i2c_master = data->cci_master;
rc = data->client->i2c_func_tbl->i2c_util(data->client, MSM_CCI_INIT);
if (rc < 0) {
vl6180_errmsg("%d: CCI Init failed\n", __LINE__);
return rc;
}
vl6180_dbgmsg("CCI Init Succeeded\n");
data->client->addr_type = MSM_CAMERA_I2C_WORD_ADDR;
return 0;
}
static int32_t msm_tof_power(struct v4l2_subdev *sd, int on)
{
struct stmvl6180_data *stmdata = stmvl6180_getobject();
if(stmdata) {
mutex_lock(&stmdata->work_mutex);
if(on) {
if(stmdata->tof_start && stmdata->enable_ps_sensor == 0)
stmdata->tof_start(stmdata, 3, NORMAL_MODE);
} else {
if(stmdata->tof_stop && stmdata->enable_ps_sensor == 1) {
stmdata->enable_ps_sensor = 0;
stmdata->tof_stop(stmdata);
}
}
mutex_unlock(&stmdata->work_mutex);
}
vl6180_dbgmsg("TOF power called %d\n", on);
return 0;
}
static void stmvl6180_write_offset_calibration_file(void)
{
struct file *f;
char buf[8];
mm_segment_t fs;
f = filp_open("/persist/calibration/offset", O_RDWR|O_CREAT, 0644);
if (IS_ERR(f)) {
vl6180_errmsg("%ld\n", PTR_ERR(f));
return;
}
fs = get_fs();
set_fs(get_ds());
sprintf(buf, "%d", offset_calib);
vl6180_dbgmsg("write offset as:%s, buf[0]:%c\n", buf, buf[0]);
f->f_op->write(f, buf, 8, &f->f_pos);
set_fs(fs);
filp_close(f, NULL);
return;
}
/*
* QCOM specific functions
*/
static int stmvl6180_parse_vdd(struct device *dev, struct i2c_data *data)
{
int err = 0;
vl6180_dbgmsg("Enter\n");
err = of_property_read_string(dev->of_node, "st,vdd", &power_pin_vdd);
if (err) {
pr_err("%s: OF error rc=%d at line %d for st,vdd\n",
__func__, err, __LINE__);
goto exit;
}
err = of_property_read_string(dev->of_node, "st,vcc", &power_pin_vcc);
if (err) {
pr_err("%s: OF error rc=%d at line %d for st,vdd\n",
__func__, err, __LINE__);
goto exit;
}
data->cs_gpio_num = of_get_named_gpio(dev->of_node, "st,cs_gpio", 0);
if (!gpio_is_valid(data->cs_gpio_num)) {
pr_err("%s: OF error rc=%d at line %d for cy,cs_gpio\n",
__func__, err, __LINE__);
goto exit;
}
/* VDD power on */
data->vdd = regulator_get(dev, power_pin_vdd);
if (IS_ERR(data->vdd)) {
pr_err("%s: failed to get st vdd\n", __func__);
goto exit;
}
err = regulator_set_voltage(data->vdd, 2850000, 2850000);
if (err < 0) {
pr_err("%s: failed to set st vdd\n", __func__);
goto exit_vdd_regulator_put;
}
/* VCC power on */
data->vcc = regulator_get(dev, power_pin_vcc);
if (IS_ERR(data->vcc)) {
pr_err("%s: failed to get st vcc\n", __func__);
goto exit_vdd_regulator_put;
}
err = regulator_set_voltage(data->vcc, 0, 0);
if (err < 0) {
pr_err("%s: failed to set st vcc\n", __func__);
goto exit_vcc_regulator_put;
}
err = gpio_request(data->cs_gpio_num, "tmvl6180");
if (err < 0) {
pr_err("%s: failed to get cs gpio\n", __func__);
goto exit_vcc_regulator_put;
}
err = gpio_direction_output(data->cs_gpio_num, 1);
if (err < 0) {
pr_err("%s: failed to get cs gpio\n", __func__);
goto exit_vcc_regulator_put;
}
vl6180_dbgmsg("End\n");
return err;
exit_vcc_regulator_put:
regulator_put(data->vcc);
exit_vdd_regulator_put:
regulator_put(data->vdd);
exit:
return err;
}
static void stmvl6180_read_calibration_file(void)
{
struct file *f;
char buf[8];
mm_segment_t fs;
int i, is_sign = 0;
if(gp_vl6180_data->offset_buf.file_opened == true) {
vl6180_dbgmsg("offset_calib as %d\n",
gp_vl6180_data->offset_buf.value);
VL6180x_SetOffsetCalibrationData(vl6180x_dev,
gp_vl6180_data->offset_buf.value);
} else {
f = filp_open("/persist/calibration/offset", O_RDONLY, 0);
if (f != NULL && !IS_ERR(f) && f->f_dentry != NULL) {
fs = get_fs();
set_fs(get_ds());
/* init the buffer with 0 */
for (i = 0; i < 8; i++)
buf[i] = 0;
f->f_op->read(f, buf, 8, &f->f_pos);
set_fs(fs);
vl6180_dbgmsg("offset as:%s, buf[0]:%c\n", buf, buf[0]);
offset_calib = 0;
for (i = 0; i < 8; i++) {
if (i == 0 && buf[0] == '-')
is_sign = 1;
else if (buf[i] >= '0' && buf[i] <= '9')
offset_calib = offset_calib * 10 + (buf[i] - '0');
else
break;
}
if (is_sign == 1)
offset_calib = -1 * offset_calib;
vl6180_dbgmsg("file open offset_calib as %d\n", offset_calib);
gp_vl6180_data->offset_buf.file_opened = true;
gp_vl6180_data->offset_buf.value = offset_calib;
VL6180x_SetOffsetCalibrationData(vl6180x_dev, offset_calib);
filp_close(f, NULL);
} else {
gp_vl6180_data->offset_buf.file_opened = true;
gp_vl6180_data->offset_buf.value = 0;
vl6180_errmsg("no offset calibration file exist!\n");
}
}
is_sign = 0;
if(gp_vl6180_data->xtalk_buf.file_opened == true) {
vl6180_dbgmsg("xtalk_calib as %d\n",
gp_vl6180_data->xtalk_buf.value);
/* set up threshold ignore */
if ((gp_vl6180_data->xtalk_buf.value+13) < 64 )
VL6180x_WrWord(vl6180x_dev, SYSRANGE_RANGE_IGNORE_THRESHOLD, 64); /* 0.5Mcps */
else
VL6180x_WrWord(vl6180x_dev, SYSRANGE_RANGE_IGNORE_THRESHOLD, (gp_vl6180_data->xtalk_buf.value+13)); /* +0.1Mcps */
VL6180x_WrByte(vl6180x_dev, SYSRANGE_RANGE_IGNORE_VALID_HEIGHT, 100);
VL6180x_UpdateByte(vl6180x_dev, SYSRANGE_RANGE_CHECK_ENABLES,
~RANGE_CHECK_RANGE_ENABLE_MASK, RANGE_CHECK_RANGE_ENABLE_MASK);
/* setup xtalk compensation rate */
VL6180x_SetXTalkCompensationRate(vl6180x_dev, gp_vl6180_data->xtalk_buf.value);
} else {
f = filp_open("/persist/calibration/xtalk", O_RDONLY, 0);
if (f != NULL && !IS_ERR(f) && f->f_dentry != NULL) {
fs = get_fs();
set_fs(get_ds());
/* init the buffer with 0 */
for (i = 0; i < 8; i++)
buf[i] = 0;
f->f_op->read(f, buf, 8, &f->f_pos);
set_fs(fs);
vl6180_dbgmsg("xtalk as:%s, buf[0]:%c\n", buf, buf[0]);
xtalk_calib = 0;
for (i = 0; i < 8; i++) {
if (i == 0 && buf[0] == '-')
is_sign = 1;
else if (buf[i] >= '0' && buf[i] <= '9')
xtalk_calib = xtalk_calib * 10 + (buf[i] - '0');
else
break;
}
if (is_sign == 1)
xtalk_calib = -1 * xtalk_calib;
vl6180_dbgmsg("file open xtalk_calib as %d\n", xtalk_calib);
gp_vl6180_data->xtalk_buf.file_opened = true;
gp_vl6180_data->xtalk_buf.value = xtalk_calib;
/* set up threshold ignore */
if ((xtalk_calib+13) < 64 )
VL6180x_WrWord(vl6180x_dev, SYSRANGE_RANGE_IGNORE_THRESHOLD, 64); /* 0.5Mcps */
else
VL6180x_WrWord(vl6180x_dev, SYSRANGE_RANGE_IGNORE_THRESHOLD, (xtalk_calib+13)); /* +0.1Mcps */
VL6180x_WrByte(vl6180x_dev, SYSRANGE_RANGE_IGNORE_VALID_HEIGHT, 100);
VL6180x_UpdateByte(vl6180x_dev, SYSRANGE_RANGE_CHECK_ENABLES,
~RANGE_CHECK_RANGE_ENABLE_MASK, RANGE_CHECK_RANGE_ENABLE_MASK);
/* setup xtalk compensation rate */
VL6180x_SetXTalkCompensationRate(vl6180x_dev, xtalk_calib);
filp_close(f, NULL);
} else {
gp_vl6180_data->xtalk_buf.file_opened = true;
gp_vl6180_data->xtalk_buf.value = XTALK_CALIBRATION_DEFAULT;
vl6180_errmsg("no xtalk calibration file exist!\n");
}
}
return;
}
static long msm_tof_subdev_ioctl(struct v4l2_subdev *sd,
unsigned int cmd, void *arg)
{
vl6180_dbgmsg("Subdev_ioctl not handled cmd: %u arg: %p\n",cmd,arg);
return 0;
}
/*
* misc device file operation functions
*/
static int stmvl6180_ioctl_handler(struct file *file,
unsigned int cmd, unsigned long arg, void __user *p)
{
int rc = 0;
unsigned int xtalkint = 0;
int8_t offsetint = 0;
struct stmvl6180_data *data = gp_vl6180_data;
struct stmvl6180_register reg;
if (!data)
return -EINVAL;
vl6180_dbgmsg("Enter enable_ps_sensor:%d\n", data->enable_ps_sensor);
switch (cmd) {
/* enable */
case VL6180_IOCTL_INIT:
pr_err("%s: VL6180_IOCTL_INIT\n", __func__);
/* turn on tof sensor only if it's not enabled by other client */
if (data->enable_ps_sensor == 0) {
/* to start */
stmvl6180_start(data, 3, NORMAL_MODE);
} else
rc = -EINVAL;
break;
/* crosstalk calibration */
case VL6180_IOCTL_XTALKCALB:
vl6180_dbgmsg("VL6180_IOCTL_XTALKCALB\n");
/* turn on tof sensor only if it's not enabled by other client */
if (data->enable_ps_sensor == 0) {
/* to start */
stmvl6180_start(data, 3, XTALKCALIB_MODE);
} else
rc = -EINVAL;
break;
/* set up Xtalk value */
case VL6180_IOCTL_SETXTALK:
vl6180_dbgmsg("VL6180_IOCTL_SETXTALK\n");
if (copy_from_user(&xtalkint, (unsigned int *)p, sizeof(unsigned int))) {
vl6180_errmsg("%d, fail\n", __LINE__);
return -EFAULT;
}
vl6180_dbgmsg("SETXTALK as 0x%x\n", xtalkint);
#ifdef CALIBRATION_FILE
xtalk_calib = xtalkint;
stmvl6180_write_xtalk_calibration_file();
#endif
VL6180x_SetXTalkCompensationRate(vl6180x_dev, xtalkint);
break;
/* offset calibration */
case VL6180_IOCTL_OFFCALB:
vl6180_dbgmsg("VL6180_IOCTL_OFFCALB\n");
if (data->enable_ps_sensor == 0) {
/* to start */
stmvl6180_start(data, 3, OFFSETCALIB_MODE);
} else
rc = -EINVAL;
break;
/* set up offset value */
case VL6180_IOCTL_SETOFFSET:
vl6180_dbgmsg("VL6180_IOCTL_SETOFFSET\n");
if (copy_from_user(&offsetint, (int8_t *)p, sizeof(int8_t))) {
vl6180_errmsg("%d, fail\n", __LINE__);
return -EFAULT;
}
vl6180_dbgmsg("SETOFFSET as %d\n", offsetint);
#ifdef CALIBRATION_FILE
offset_calib = offsetint;
stmvl6180_write_offset_calibration_file();
#endif
VL6180x_SetOffsetCalibrationData(vl6180x_dev, offsetint);
break;
/* disable */
case VL6180_IOCTL_STOP:
vl6180_errmsg("VL6180_IOCTL_STOP\n");
/* turn off tof sensor only if it's enabled by other client */
if (data->enable_ps_sensor == 1) {
data->enable_ps_sensor = 0;
/* to stop */
stmvl6180_stop(data);
}
break;
/* Get all range data */
case VL6180_IOCTL_GETDATAS:
vl6180_dbgmsg("VL6180_IOCTL_GETDATAS\n");
if (copy_to_user((VL6180x_RangeData_t *)p, &(data->rangeData), sizeof(VL6180x_RangeData_t))) {
vl6180_errmsg("%d, fail\n", __LINE__);
return -EFAULT;
}
break;
case VL6180_IOCTL_REGISTER:
vl6180_dbgmsg("VL6180_IOCTL_REGISTER\n");
if (copy_from_user(®, (struct stmvl6180_register *)p,
sizeof(struct stmvl6180_register))) {
vl6180_errmsg("%d, fail\n", __LINE__);
return -EFAULT;
}
reg.status = 0;
switch (reg.reg_bytes) {
case(4):
if (reg.is_read)
reg.status = VL6180x_RdDWord(vl6180x_dev, (uint16_t)reg.reg_index,
®.reg_data);
else
reg.status = VL6180x_WrDWord(vl6180x_dev, (uint16_t)reg.reg_index,
reg.reg_data);
break;
case(2):
if (reg.is_read)
reg.status = VL6180x_RdWord(vl6180x_dev, (uint16_t)reg.reg_index,
(uint16_t *)®.reg_data);
else
reg.status = VL6180x_WrWord(vl6180x_dev, (uint16_t)reg.reg_index,
(uint16_t)reg.reg_data);
break;
case(1):
if (reg.is_read)
reg.status = VL6180x_RdByte(vl6180x_dev, (uint16_t)reg.reg_index,
(uint8_t *)®.reg_data);
else
reg.status = VL6180x_WrByte(vl6180x_dev, (uint16_t)reg.reg_index,
(uint8_t)reg.reg_data);
break;
default:
reg.status = -1;
}
if (copy_to_user((struct stmvl6180_register *)p, ®,
sizeof(struct stmvl6180_register))) {
vl6180_errmsg("%d, fail\n", __LINE__);
return -EFAULT;
}
break;
default:
rc = -EINVAL;
break;
}
return rc;
}
/*
* QCOM specific functions
*/
static int stmvl6180_get_dt_data(struct device *dev, struct cci_data *data)
{
int rc = 0;
vl6180_dbgmsg("Enter\n");
if (dev->of_node) {
struct device_node *of_node = dev->of_node;
struct msm_tof_vreg *vreg_cfg;
if (!of_node) {
vl6180_errmsg("failed %d\n", __LINE__);
return -EINVAL;
}
rc = of_property_read_u32(of_node, "cell-index", &data->pdev->id);
if (rc < 0) {
vl6180_errmsg("failed %d\n", __LINE__);
return rc;
}
vl6180_dbgmsg("cell-index: %d\n", data->pdev->id);
rc = of_property_read_u32(of_node, "qcom,cci-master", &data->cci_master);
if (rc < 0) {
vl6180_errmsg("failed %d\n", __LINE__);
/* Set default master 0 */
data->cci_master = MASTER_0;
rc = 0;
}
vl6180_dbgmsg("cci_master: %d\n", data->cci_master);
rc = of_property_read_u32(of_node, "qcom,slave-addr",&data->slave_addr);
if (rc < 0) {
vl6180_errmsg("failed %d\n", __LINE__);
data->slave_addr = 0x29;
rc = 0;
}
vl6180_dbgmsg("slave addr: %d\n", data->slave_addr);
if (of_find_property(of_node, "qcom,cam-vreg-name", NULL)) {
vreg_cfg = &data->vreg_cfg;
rc = msm_camera_get_dt_vreg_data(of_node,
&vreg_cfg->cam_vreg, &vreg_cfg->num_vreg);
if (rc < 0) {
vl6180_errmsg("failed %d\n", __LINE__);
return rc;
}
}
vl6180_dbgmsg("vreg-name: %s min_volt: %d max_volt: %d",
vreg_cfg->cam_vreg->reg_name,
vreg_cfg->cam_vreg->min_voltage,
vreg_cfg->cam_vreg->max_voltage);
data->en_gpio = of_get_named_gpio(of_node,
"stmvl6180,ldaf-en-gpio",0);
if (data->en_gpio < 0 || !gpio_is_valid(data->en_gpio)) {
vl6180_errmsg("en_gpio is unavailable or invalid\n");
return data->en_gpio;
}
data->int_gpio = of_get_named_gpio(of_node,
"stmvl6180,ldaf-int-gpio",0);
if (data->int_gpio < 0 || !gpio_is_valid(data->int_gpio)) {
vl6180_errmsg("en_gpio is unvailable or invalid\n");
return data->int_gpio;
}
vl6180_dbgmsg("ldaf_int: %u,ldaf_en: %u\n",
data->int_gpio,data->en_gpio);
rc = of_property_read_u32(of_node, "qcom,i2c-freq-mode",
&data->i2c_freq_mode);
if (rc < 0 || data->i2c_freq_mode >= I2C_MAX_MODES) {
data->i2c_freq_mode = 0;
vl6180_errmsg("invalid i2c frequency mode\n");
}
vl6180_dbgmsg("i2c_freq_mode: %u\n",data->i2c_freq_mode);
}
vl6180_dbgmsg("End rc =%d\n", rc);
return rc;
}
static int stmvl6180_setup(struct stmvl6180_data *data)
{
int rc = 0;
#ifdef USE_INT
int irq = 0;
#endif
vl6180_dbgmsg("Enter\n");
/* init mutex */
mutex_init(&data->update_lock);
mutex_init(&data->work_mutex);
#ifdef USE_INT
/* init interrupt */
gpio_request(IRQ_NUM, "vl6180_gpio_int");
gpio_direction_input(IRQ_NUM);
irq = gpio_to_irq(IRQ_NUM);
if (irq < 0) {
vl6180_errmsg("filed to map GPIO: %d to interrupt:%d\n", IRQ_NUM, irq);
} else {
int result;
vl6180_dbgmsg("register_irq:%d\n", irq);
/* IRQF_TRIGGER_FALLING- poliarity:0 IRQF_TRIGGER_RISNG - poliarty:1 */
rc = request_threaded_irq(irq, NULL, stmvl6180_interrupt_handler, IRQF_TRIGGER_RISING, "vl6180_lb_gpio_int", (void *)data);
if (rc) {
vl6180_errmsg("%d, Could not allocate STMVL6180_INT ! result:%d\n", __LINE__, result);
return rc;
}
}
data->irq = irq;
vl6180_dbgmsg("interrupt is hooked\n");
#endif
/* init work handler */
INIT_DELAYED_WORK(&data->dwork, stmvl6180_work_handler);
/* Register to Input Device */
data->input_dev_ps = input_allocate_device();
if (!data->input_dev_ps) {
rc = -ENOMEM;
vl6180_errmsg("%d error:%d\n", __LINE__, rc);
#ifdef USE_INT
free_irq(irq, data);
#endif
return rc;
}
set_bit(EV_ABS, data->input_dev_ps->evbit);
/* range in cm*/
input_set_abs_params(data->input_dev_ps, ABS_DISTANCE, 0, 76, 0, 0);
/* tv_sec */
input_set_abs_params(data->input_dev_ps, ABS_HAT0X, 0, 0xffffffff, 0, 0);
/* tv_usec */
input_set_abs_params(data->input_dev_ps, ABS_HAT0Y, 0, 0xffffffff, 0, 0);
/* range in_mm */
input_set_abs_params(data->input_dev_ps, ABS_HAT1X, 0, 765, 0, 0);
/* error code change maximum to 0xff for more flexibility */
input_set_abs_params(data->input_dev_ps, ABS_HAT1Y, 0, 0xff, 0, 0);
/* rtnRate */
input_set_abs_params(data->input_dev_ps, ABS_HAT2X, 0, 0xffffffff, 0, 0);
/* rtn_amb_rate */
input_set_abs_params(data->input_dev_ps, ABS_HAT2Y, 0, 0xffffffff, 0, 0);
/* rtn_conv_time */
input_set_abs_params(data->input_dev_ps, ABS_HAT3X, 0, 0xffffffff, 0, 0);
/* dmax */
input_set_abs_params(data->input_dev_ps, ABS_HAT3Y, 0, 0xffffffff, 0, 0);
data->input_dev_ps->name = "STM VL6180 proximity sensor";
/* setup the open/close callbacks for the input_device */
data->input_dev_ps->open = stmvl6180_data_dev_open;
data->input_dev_ps->close = stmvl6180_data_dev_close;
rc = input_register_device(data->input_dev_ps);
if (rc) {
rc = -ENOMEM;
vl6180_errmsg("%d error:%d\n", __LINE__, rc);
#ifdef USE_INT
free_irq(irq, data);
#endif
input_free_device(data->input_dev_ps);
return rc;
}
/* Register sysfs hooks */
data->range_kobj = kobject_create_and_add("range", kernel_kobj);
if (!data->range_kobj) {
rc = -ENOMEM;
vl6180_errmsg("%d error:%d\n", __LINE__, rc);
#ifdef USE_INT
free_irq(irq, data);
#endif
input_unregister_device(data->input_dev_ps);
input_free_device(data->input_dev_ps);
return rc;
}
rc = sysfs_create_group(data->range_kobj, &stmvl6180_attr_group);
if (rc) {
rc = -ENOMEM;
vl6180_errmsg("%d error:%d\n", __LINE__, rc);
#ifdef USE_INT
free_irq(irq, data);
#endif
kobject_put(data->range_kobj);
input_unregister_device(data->input_dev_ps);
input_free_device(data->input_dev_ps);
return rc;
}
/* to register as a misc device */
if (misc_register(&stmvl6180_ranging_dev) != 0)
vl6180_errmsg("Could not register misc. dev for stmvl6180 ranging\n");
/* init default value */
data->enable_ps_sensor = 0;
data->reset = 1;
data->delay_ms = 30; /* delay time to 30ms */
data->enableDebug = 0;
data->client_object.power_up = 0; /* for those one-the-fly power on/off flag */
vl6180_dbgmsg("support ver. %s enabled\n", DRIVER_VERSION);
vl6180_dbgmsg("End");
return rc;
}
