linux-kernel - Re: [PATCH v10 4/4] [media] platform: Add Synopsys DesignWare HDMI RX Controller Driver

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Message-ID: <3c15b537-33b3-f786-369e-5d82ab9eeb9c@synopsys.com>
Date:   Fri, 15 Dec 2017 11:23:04 +0000
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     Hans Verkuil <hverkuil@...all.nl>, <linux-media@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     Joao Pinto <Joao.Pinto@...opsys.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hans.verkuil@...co.com>,
        "Sylwester Nawrocki" <snawrocki@...nel.org>,
        Sakari Ailus <sakari.ailus@....fi>,
        Philippe Ombredanne <pombredanne@...b.com>
Subject: Re: [PATCH v10 4/4] [media] platform: Add Synopsys DesignWare HDMI RX
 Controller Driver

Hi Hans,

On 13-12-2017 20:49, Hans Verkuil wrote:
> On 13/12/17 15:00, Jose Abreu wrote:
>>
>> Indeed. I compared the values with the spec and they are not
>> correct. Even hsync is wrong. I already corrected in the code the
>> hsync but regarding interlace I'm not seeing an easy way to do
>> this without using interrupts in each vsync because the register
>> I was toggling does not behave as I expected (I misunderstood the
>> databook). Maybe we should not detect interlaced modes for now?
>> Or not fill the il_ fields?
> As I mentioned above you as long as you get a good backporch value you
> can deduce from whether it is an odd or even number to which field it
> belongs and fill in the other values. So I think you only need to read
> these values for one field.
>
> Filling in good values here (at least as far as is possible since not all
> hardware can give it) will help debugging issues, even if you otherwise do
> not support interlaced.

Ok, I will fill the fields.

Until the end of January I will be quite busy in another project
so if you could review the remaining patches of this series I
would appreciate very much ... This way when I have the time I
can code all the changes and send them at once.

Thanks and Best Regards,
Jose Miguel Abreu

>
> Regards,
>
> 	Hans