Android系统中app层调用硬件信息

device_create_file(&client->dev, &dev_attr_dev_info);

/*Add By XXX*/

static ssize_t mobile_camera_show(struct device *dev, struct device_attribute *attr, char *buff)

{

char *buff_bak = buff;

struct v4l2_subdev *sd = dev_get_drvdata(dev);

struct b52_sensor *sensor = to_b52_sensor(sd);

buff += sprintf(buff, "name = %s", sensor->drvdata->name);

buff += sprintf(buff, ", position = %d", sensor->cur_mod_id);

return buff - buff_bak;

}

static DEVICE_ATTR(dev_info, S_IRUGO, mobile_camera_show, NULL);

/*End Add*/

static ssize_t mobile_camera_show(struct device *dev, struct device_attribute *attr, char *buff)

{

char *buff_bak = buff;

int i=0;

struct x_subdev *xsd = container_of(dev_get_drvdata(dev), struct x_subdev, subdev);

struct v4l2_subdev *sd = &(xsd->subdev);

struct i2c_client *client = v4l2_get_subdevdata(sd);

struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);

struct sensor_board_data *sdata = ssdd->drv_priv;

buff += sprintf(buff, "name = %s", xsd->name);

/*if(!(strcmp(xsd->name,"sp0a20-pxa-mipi")))

i=1;

buff += sprintf(buff, ", position = %d", i);*/

buff += sprintf(buff, ", position = %d", (sdata->mount_pos & SENSOR_POS_FRONT) >> 1);

return buff - buff_bak;

}

static DEVICE_ATTR(dev_info, S_IRUGO, mobile_camera_show, NULL);