I have also tried these settings
#define VIDIOC_AVANCA_ZOOM (0x009a0000|0x900)+14
#define VIDIOC_RECUA_ZOOM (0x009a0000|0x900)+14
#define VIDIOC_ATIVA_FLASH (0x009a0000|0x900)+3
#define VIDIOC_WHITE_BALANCE (0x009a0000|0x900)+13
Em 08/05/2014, à(s) 18:01, Guennadi Liakhovetski <g.liakhovet...@gmx.de>
escreveu:
> On Thu, 8 May 2014, Marcio Campos de Lima wrote:
>
>> Hi Guennadi
>> Thank you very much for your answer.
>> The driver is a modified OV5642.c for the Omnivision OV5642 sensor. The
>> platform is a custom AT91SAM9M10 board with a camera paralell interface.
>> the driver is working quite well (capturing images) apart the set control
>> interface.
>
> So, you're using the atmel-isi camera _host_ driver.
>
>> Unfortunately I cannot move to the most current kernel now.
>
> I don't find VIDIOC_AVANCA_ZOOM in the mainline kernel, it seems to be a
> part of your modification, so, I don't think I can help you, sorry.
>
> Thanks
> Guennadi
>
>> Thanks again
>> Regards
>> Marcio
>> Em 08/05/2014, à(s) 17:14, Guennadi Liakhovetski <g.liakhovet...@gmx.de>
>> escreveu:
>>
>>> Hi Marcio,
>>>
>>> Firstly, please direct all V4L related questions to the linux-media list
>>> (added to CC), secondly, your problem will have much better chances to
>>> attract attention if you use a current kernel, thirdly, please, specify
>>> which camera host driver / which ARM platform you're dealing with.
>>>
>>> Thanks
>>> Guennadi
>>>
>>> On Thu, 8 May 2014, Marcio Campos de Lima wrote:
>>>
>>>> Hi
>>>>
>>>> Can anybody tell me why the set control function is not working in Linux
>>>> 3.6.9? Thanks.
>>>>
>>>> —— APPLICATION CALL ——
>>>> struct v4l2_control controle;
>>>> controle.id = VIDIOC_AVANCA_ZOOM;
>>>> controle.value = time;
>>>> if (-1 == xioctl(fd_camera, VIDIOC_S_CTRL,&controle))
>>>> {
>>>> printf ("%s erro\n",__FUNCTION__);
>>>> perror ("erro iotcl");
>>>> }
>>>>
>>>> The ioctl call returns with invalid argument. It is amazing because the
>>>> first time the ioctl is called it is executed ok. Then no more call is
>>>> allowed and return the invalid
>>>>
>>>> below is the device driver code I think may be relevant.
>>>>
>>>> v4l2_ctrl_handler_init(&priv->ctrls, ARRAY_SIZE(ov5642_ctrls));
>>>> printk ("handler_init\n");
>>>> v4l2_ctrl_new_std(&priv->ctrls, &ov5642_ctrl_ops,V4L2_CID_ZOOM_RELATIVE,
>>>> -1000, 1000, 1, 500);
>>>> v4l2_ctrl_new_std(&priv->ctrls, &ov5642_ctrl_ops,V4L2_CID_FLASH_STROBE,
>>>> -100, 100, 1, 5);
>>>>
>>>>
>>>> priv->subdev.ctrl_handler=&priv->ctrls;
>>>> v4l2_i2c_subdev_init(&priv->subdev, client, &ov5642_subdev_ops);
>>>> return ov5642_video_probe(client);
>>>>
>>>> static int ov5642_s_ctrl(struct v4l2_ctrl *ctrl)
>>>> {
>>>> struct ov5642 *ov5642 =
>>>> container_of(ctrl->handler, struct ov5642, ctrls);
>>>> struct i2c_client *client = v4l2_get_subdevdata(&ov5642->subdev);
>>>> u16 data;
>>>> int ret;
>>>> printk ("%s: id=%08x val=%d\n",__FUNCTION__, ctrl->id, ctrl->val);
>>>> switch (ctrl->id) {
>>>> case V4L2_CID_DO_WHITE_BALANCE:
>>>> ov5640_set_wb_oem(client, ctrl->val);
>>>> break;
>>>> case V4L2_CID_EXPOSURE:
>>>>
>>>> break;
>>>> case V4L2_CID_GAIN:
>>>> /* Gain is controlled by 2 analog stages and a digital stage.
>>>> * Valid values for the 3 stages are
>>>> *
>>>> * Stage Min Max Step
>>>> * ------------------------------------------
>>>> * First analog stage x1 x2 1
>>>> * Second analog stage x1 x4 0.125
>>>> * Digital stage x1 x16 0.125
>>>> *
>>>> * To minimize noise, the gain stages should be used in the
>>>> * second analog stage, first analog stage, digital stage order.
>>>> * Gain from a previous stage should be pushed to its maximum
>>>> * value before the next stage is used.
>>>> */
>>>> if (ctrl->val <= 32) {
>>>> data = ctrl->val;
>>>> } else if (ctrl->val <= 64) {
>>>> ctrl->val &= ~1;
>>>> data = (1 << 6) | (ctrl->val >> 1);
>>>> } else {
>>>> ctrl->val &= ~7;
>>>> data = ((ctrl->val - 64) << 5) | (1 << 6) | 32;
>>>> }
>>>> break;
>>>> case V4L2_CID_ZOOM_RELATIVE:
>>>> if (ctrl->val>0)
>>>> avanca_zoom(sysPriv.v4l2_int_device, ctrl->val);
>>>> else
>>>> recua_zoom(sysPriv.v4l2_int_device, ctrl->val);
>>>>
>>>> break;
>>>> case V4L2_CID_BRIGHTNESS:
>>>> ov5640_set_brightness(client, ctrl->val);
>>>> break;
>>>> case V4L2_CID_CONTRAST:
>>>> ov5640_set_contrast(client, ctrl->val);
>>>> break;
>>>> case V4L2_CID_FLASH_STROBE:
>>>> ativa_flash (sysPriv.v4l2_int_device, ctrl->val);
>>>> break;
>>>> case V4L2_CID_VFLIP:
>>>>
>>>> case V4L2_CID_TEST_PATTERN:
>>>>
>>>>
>>>>
>>>> case V4L2_CID_BLC_AUTO:
>>>>
>>>> case V4L2_CID_BLC_TARGET_LEVEL:
>>>>
>>>> case V4L2_CID_BLC_ANALOG_OFFSET:
>>>>
>>>> case V4L2_CID_BLC_DIGITAL_OFFSET:
>>>> return 1;
>>>> }
>>>>
>>>> return 0;
>>>> }
>>>>
>>>> static struct v4l2_ctrl_ops ov5642_ctrl_ops = {
>>>> .s_ctrl = ov5642_s_ctrl,
>>>> };
>>>>
>>>>
>>>> _______________________________________________
>>>> linux-arm-kernel mailing list
>>>> linux-arm-ker...@lists.infradead.org
>>>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>>>>
>>>
>>> ---
>>> Guennadi Liakhovetski, Ph.D.
>>> Freelance Open-Source Software Developer
>>> http://www.open-technology.de/
>>
>
> ---
> Guennadi Liakhovetski, Ph.D.
> Freelance Open-Source Software Developer
> http://www.open-technology.de/
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