Hi Aguirre Sergio,
1) Looks like it could be a data lane issue. OMAP detects lots of
ERRSOTSYNCHS errors
on the datalanes (CSI2_COMPLEXIO_IRQSTATUS)
2) Even if i configure it to use only one data lane on both sides. It detects
errors on other data lanes.
That explains the abnormally high number of these error interrupts and a
frame completion interrupt once in a while.
I guess, I need to check my configuration settings.
Thanks,
Sriram
On Tue, Feb 28, 2012 at 9:12 PM, Aguirre, Sergio <saaguirre@xxxxxx> wrote:
> Hi Sriram,
>
> On Tue, Feb 28, 2012 at 8:46 AM, Sriram V <vshrirama@xxxxxxxxx> wrote:
>> Hi Aguirre Sergio,
>>
>> On Tue, Feb 28, 2012 at 9:08 AM, Aguirre, Sergio <saaguirre@xxxxxx> wrote:
>>> Sriram,
>>>
>>> On Sun, Feb 26, 2012 at 8:54 AM, Sriram V <vshrirama@xxxxxxxxx> wrote:
>>>> Hi,
>>>> When I take the dump of the buffer which is pointed by "DATA MEM
>>>> PING ADDRESS". It always shows 0x55.
>>>> Even if i write 0x00 to the address. I do notice that it quickly
>>>> changes to 0x55.
>>>> Under what conditions could this happen? What am i missing here.
>>>
>>> If you're using "yavta" for capture, notice that it clears out the
>>> buffers before queuing them in:
>>>
>>> static int video_queue_buffer(struct device *dev, int index, enum
>>> buffer_fill_mode fill)
>>> {
>>> struct v4l2_buffer buf;
>>> int ret;
>>>
>>> ...
>>> ...
>>> if (dev->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
>>> ...
>>> } else {
>>> if (fill & BUFFER_FILL_FRAME)
>>> memset(dev->buffers[buf.index].mem, 0x55, dev->buffers[index].size);
>>> if (fill & BUFFER_FILL_PADDING)
>>> memset(dev->buffers[buf.index].mem + dev->buffers[index].size,
>>> 0x55, dev->buffers[index].padding);
>>> }
>>> ...
>>> }
>>>
>>> So, just make sure this condition is not met.
>>>
>>>>
>>
>> Unfortunately, this condition is met. For some reason, ISS thinks
>> it has got valid frame. Whereas the Image data is not populated into
>> the buffers.
>> The register CSI2_CTX_CTRL1_i[COUNT] keeps getting toggled between 0 and 1
>> indicating a frame arrival.
>>
>> I also notice that on some frames, The first 0x200 bytes contains data
>> other than 0x55
>> and the rest are 0x55.
>>
>> Probably this could be related to resolution settings or hsync and
>> vsync settings.
>> Probably, my chip configuration is faulty.
>
> Hmm, sounds like it.
>
> Can you try adding this to the top of the file?
>
> #define DEBUG
>
> So that the dev_dbg() prints get executed?
>
> I'm curious to see if you detect any ComplexIO errors on omap4iss_csi2_isr()...
>
>>
>>>> I do notice that the OMAP4 ISS is tested to work with OV5640 (YUV422
>>>> Frames) and OV5650 (Raw Data)
>>>> When you say 422 Frames only. Do you mean 422-8Bit Mode?.
>>>
>>> Yes. When saving YUV422 to memory, you can only use this mode AFAIK.
>>>
>>>>
>>>> I havent tried RAW12 which my device gives, Do i have to update only
>>>> the Data Format Selection register
>>>> of the ISS for RAW12?
>>>
>>> Ok, now it makes sense.
>>>
>>> So, if your CSI2 source is giving, you need to make sure:
>>>
>>> CSI2_CTX_CTRL2_0.FORMAT[9:0] is:
>>>
>>> - 0xAC: RAW12 + EXP16
>>> or
>>> - 0x2C: RAW12
>>>
>>> The difference is that the EXP16 variant, will save to memory in
>>> expansion to 2 bytes, instead of 12 bits, so it'll be byte aligned.
>>>
>>> Can you try attached patch?
>>
>> With RAW12 configuration, I dont see any interrupts at all.
>
> Ok,
>
> Then this means your CSI2 transmitter (sensor) is actually sending
> YUV422, and not RAW12.
>
> Nevermind that patch then...
>
> Regards,
> Sergio
>>
>>
>>>
>>> Regards,
>>> Sergio
>>>
>>>>
>>>> Please advice.
>>>>
>>>>
>>>> On Thu, Feb 23, 2012 at 11:24 PM, Sriram V <vshrirama@xxxxxxxxx> wrote:
>>>>> Hi,
>>>>> 1) An Hexdump of the captured file shows 0x55 at all locations.
>>>>> Is there any buffer location i need to check.
>>>>> 2) I have tried with "devel" branch.
>>>>> 3) Changing the polarities doesnt help either.
>>>>> 4) The sensor is giving out YUV422 8Bit Mode,
>>>>> Will 0x52001074 = 0x0A00001E (UYVY Format) it bypass the ISP
>>>>> and dump directly into memory.
>>>>>
>>>>> On 2/23/12, Aguirre, Sergio <saaguirre@xxxxxx> wrote:
>>>>>> Hi Sriram,
>>>>>>
>>>>>> On Thu, Feb 23, 2012 at 11:25 AM, Sriram V <vshrirama@xxxxxxxxx> wrote:
>>>>>>> Hi,
>>>>>>> 1) I am trying to get a HDMI to CSI Bridge chip working with OMAP4 ISS.
>>>>>>> The issue is the captured frames are completely green in color.
>>>>>>
>>>>>> Sounds like the buffer is all zeroes, can you confirm?
>>>>>>
>>>>>>> 2) The Chip is configured to output VGA Color bar sequence with
>>>>>>> YUV422-8Bit and
>>>>>>> uses datalane 0 only.
>>>>>>> 3) The Format on OMAP4 ISS is UYVY (Register 0x52001074 = 0x0A00001E)
>>>>>>> I am trying to directly dump the data into memory without ISP processing.
>>>>>>>
>>>>>>>
>>>>>>> Please advice.
>>>>>>
>>>>>> Just to be clear on your environment, which branch/commitID are you based
>>>>>> on?
>>>>>>
>>>>>> Regards,
>>>>>> Sergio
>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Regards,
>>>>>>> Sriram
>>>>>>> --
>>>>>>> To unsubscribe from this list: send the line "unsubscribe linux-media" in
>>>>>>> the body of a message to majordomo@xxxxxxxxxxxxxxx
>>>>>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Regards,
>>>>> Sriram
>>>>
>>>>
>>>>
>>>> --
>>>> Regards,
>>>> Sriram
>>
>>
>>
>> --
>> Regards,
>> Sriram
--
Regards,
Sriram
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