power

struct  ds90ub940_power_items[] = {
    {
        .type = CRL_POWER_ETY_GPIO_FROM_PDATA,
        .val = 1,
        .undo_val = 1, 
    },
};

struct crl_sensor_configuration ds90ub940_crl_configuration = {
    .power_items = ARRAY_SIZE(ds90ub940_power_items),
    .power_entities = ds90ub940_power_items,
};

static const struct crlmodule_sensors supported_sensors[] = {
    { "DS90UB940-1", "ds90ub940", &ds90ub940_crl_configuration },
};

static const struct dev_pm_ops crlmodule_pm_ops = {
    .runtime_suspend = crlmodule_runtime_suspend,
    .runtime_resume = crlmodule_runtime_resume,
    .suspend	= crlmodule_suspend,
    .resume		= crlmodule_resume,
};

static struct i2c_driver crlmodule_i2c_driver = {
    .driver	= {
        .name = CRLMODULE_NAME,
        .pm = &crlmodule_pm_ops,
    },
    .probe	= crlmodule_probe,
    .remove	= crlmodule_remove,
    .id_table = crlmodule_id_table,

static int crlmodule_runtime_resume(struct device *dev)
{
    struct i2c_client *client = to_i2c_client(dev);
    struct v4l2_subdev *sd = i2c_get_clientdata(client);
    struct crl_sensor *sensor = to_crlmodule_sensor(sd);

    return __crlmodule_powerup_sequence(sensor);
        for (idx = 0; idx < sensor->sensor_ds->power_items; idx++) {
            entity = &sensor->pwr_entity[idx];
            switch (entity->type) {
            case CRL_POWER_ETY_GPIO_FROM_PDATA:
                gpio_set_value(sensor->platform_data->xshutdown,
                        entity->val);
                break;
            }
        }
}