linux-kernel - Re: [PATCH] media: davinci: vpif: set device capabilities

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Date:	Tue, 25 Sep 2012 17:17:41 +0530
From:	Prabhakar Lad <prabhakar.csengg@...il.com>
To:	Hans Verkuil <hansverk@...co.com>
Cc:	LMML <linux-media@...r.kernel.org>,
	DLOS <davinci-linux-open-source@...ux.davincidsp.com>,
	Manjunath Hadli <manjunath.hadli@...com>,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	VGER <linux-kernel@...r.kernel.org>,
	"Lad, Prabhakar" <prabhakar.lad@...com>,
	Hans Verkuil <hans.verkuil@...co.com>
Subject: Re: [PATCH] media: davinci: vpif: set device capabilities

Hi Hans,

Thanks for the review.

On Tue, Sep 25, 2012 at 5:13 PM, Hans Verkuil <hansverk@...co.com> wrote:
> On Tue 25 September 2012 13:16:24 Prabhakar wrote:
>> From: Lad, Prabhakar <prabhakar.lad@...com>
>>
>> Signed-off-by: Lad, Prabhakar <prabhakar.lad@...com>
>> Signed-off-by: Manjunath Hadli <manjunath.hadli@...com>
>> Cc: Hans Verkuil <hans.verkuil@...co.com>
>> ---
>>  drivers/media/platform/davinci/vpif_capture.c |    4 +++-
>>  drivers/media/platform/davinci/vpif_display.c |    4 +++-
>>  2 files changed, 6 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
>> index 4828888..faeca98 100644
>> --- a/drivers/media/platform/davinci/vpif_capture.c
>> +++ b/drivers/media/platform/davinci/vpif_capture.c
>> @@ -1630,7 +1630,9 @@ static int vpif_querycap(struct file *file, void  *priv,
>>  {
>>       struct vpif_capture_config *config = vpif_dev->platform_data;
>>
>> -     cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
>> +     cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
>> +                     V4L2_CAP_READWRITE;
>> +     cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
>>       strlcpy(cap->driver, "vpif capture", sizeof(cap->driver));
>
> This should be the real driver name which is 'vpif_capture'.
>
Ok.

>>       strlcpy(cap->bus_info, "VPIF Platform", sizeof(cap->bus_info));
>
> For bus_info I would use: "platform:vpif_capture".
>
> The 'platform:' prefix is going to be the standard for platform drivers.
>
Ok.

>>       strlcpy(cap->card, config->card_name, sizeof(cap->card));
>> diff --git a/drivers/media/platform/davinci/vpif_display.c b/drivers/media/platform/davinci/vpif_display.c
>> index d94b8a2..171e449 100644
>> --- a/drivers/media/platform/davinci/vpif_display.c
>> +++ b/drivers/media/platform/davinci/vpif_display.c
>> @@ -827,7 +827,9 @@ static int vpif_querycap(struct file *file, void  *priv,
>>  {
>>       struct vpif_display_config *config = vpif_dev->platform_data;
>>
>> -     cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
>> +     cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING |
>> +                         V4L2_CAP_READWRITE;
>> +     cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
>>       strlcpy(cap->driver, "vpif display", sizeof(cap->driver));
>
> vpif_driver
>
>>       strlcpy(cap->bus_info, "Platform", sizeof(cap->bus_info));
>
> Ditto: "platform:vpif_driver".
>
>>       strlcpy(cap->card, config->card_name, sizeof(cap->card));
>>
>
Ok, I'll respin v2 with all the changes.

Regards,
--Prabhakar Lad

> Regards,
>
>         Hans
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