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* [PATCH] yavta: Fix usage documentation for --field option
@ 2019-12-09 21:22 Niklas Söderlund
  2019-12-10  8:18 ` Geert Uytterhoeven
  0 siblings, 1 reply; 6+ messages in thread
From: Niklas Söderlund @ 2019-12-09 21:22 UTC (permalink / raw)
  To: Laurent Pinchart
  Cc: linux-renesas-soc, Niklas Söderlund, Niklas Söderlund

The --field option takes an argument selecting the field order. Update
the usage text to reflect this.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
---
 yavta.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/yavta.c b/yavta.c
index f83e143c051396c4..196345c323c662d3 100644
--- a/yavta.c
+++ b/yavta.c
@@ -2286,7 +2286,7 @@ static void usage(const char *argv0)
 	printf("    --enum-formats		Enumerate formats\n");
 	printf("    --enum-inputs		Enumerate inputs\n");
 	printf("    --fd                        Use a numeric file descriptor insted of a device\n");
-	printf("    --field			Interlaced format field order\n");
+	printf("    --field field		Set the format field order\n");
 	printf("    --log-status		Log device status\n");
 	printf("    --no-query			Don't query capabilities on open\n");
 	printf("    --offset			User pointer buffer offset from page start\n");
-- 
2.24.0


^ permalink raw reply related	[flat|nested] 6+ messages in thread

* Re: [PATCH] yavta: Fix usage documentation for --field option
  2019-12-09 21:22 [PATCH] yavta: Fix usage documentation for --field option Niklas Söderlund
@ 2019-12-10  8:18 ` Geert Uytterhoeven
  2019-12-12 23:45   ` Laurent Pinchart
  0 siblings, 1 reply; 6+ messages in thread
From: Geert Uytterhoeven @ 2019-12-10  8:18 UTC (permalink / raw)
  To: Niklas Söderlund
  Cc: Laurent Pinchart, Linux-Renesas, Niklas Söderlund

Hi Niklas,

On Mon, Dec 9, 2019 at 10:23 PM Niklas Söderlund
<niklas.soderlund@ragnatech.se> wrote:
> The --field option takes an argument selecting the field order. Update
> the usage text to reflect this.
>
> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> ---
>  yavta.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/yavta.c b/yavta.c
> index f83e143c051396c4..196345c323c662d3 100644
> --- a/yavta.c
> +++ b/yavta.c
> @@ -2286,7 +2286,7 @@ static void usage(const char *argv0)
>         printf("    --enum-formats              Enumerate formats\n");
>         printf("    --enum-inputs               Enumerate inputs\n");
>         printf("    --fd                        Use a numeric file descriptor insted of a device\n");
> -       printf("    --field                     Interlaced format field order\n");
> +       printf("    --field field               Set the format field order\n");

"Valid values for field are ..."?

>         printf("    --log-status                Log device status\n");
>         printf("    --no-query                  Don't query capabilities on open\n");
>         printf("    --offset                    User pointer buffer offset from page start\n");

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH] yavta: Fix usage documentation for --field option
  2019-12-10  8:18 ` Geert Uytterhoeven
@ 2019-12-12 23:45   ` Laurent Pinchart
  2019-12-13  1:02     ` Niklas Söderlund
  0 siblings, 1 reply; 6+ messages in thread
From: Laurent Pinchart @ 2019-12-12 23:45 UTC (permalink / raw)
  To: Niklas Söderlund; +Cc: Geert Uytterhoeven, Linux-Renesas

Hi Niklas,

On Tue, Dec 10, 2019 at 09:18:37AM +0100, Geert Uytterhoeven wrote:
> On Mon, Dec 9, 2019 at 10:23 PM Niklas Söderlund wrote:
> > The --field option takes an argument selecting the field order. Update
> > the usage text to reflect this.
> >
> > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> > ---
> >  yavta.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/yavta.c b/yavta.c
> > index f83e143c051396c4..196345c323c662d3 100644
> > --- a/yavta.c
> > +++ b/yavta.c
> > @@ -2286,7 +2286,7 @@ static void usage(const char *argv0)
> >         printf("    --enum-formats              Enumerate formats\n");
> >         printf("    --enum-inputs               Enumerate inputs\n");
> >         printf("    --fd                        Use a numeric file descriptor insted of a device\n");
> > -       printf("    --field                     Interlaced format field order\n");
> > +       printf("    --field field               Set the format field order\n");
> 
> "Valid values for field are ..."?

Please let me know if you want to send a v2. yavta is a low-level tool
so I don't think this is critical, users are expected to know that the
value comes from the V4L2 API, but stating hit wouldn't hurt either.

> >         printf("    --log-status                Log device status\n");
> >         printf("    --no-query                  Don't query capabilities on open\n");
> >         printf("    --offset                    User pointer buffer offset from page start\n");

-- 
Regards,

Laurent Pinchart

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH] yavta: Fix usage documentation for --field option
  2019-12-12 23:45   ` Laurent Pinchart
@ 2019-12-13  1:02     ` Niklas Söderlund
  2021-04-21  8:09       ` Niklas Söderlund
  2021-04-21  8:58       ` Laurent Pinchart
  0 siblings, 2 replies; 6+ messages in thread
From: Niklas Söderlund @ 2019-12-13  1:02 UTC (permalink / raw)
  To: Laurent Pinchart; +Cc: Geert Uytterhoeven, Linux-Renesas

Hi Laurent,

Thanks for your feedback.

On 2019-12-13 01:45:35 +0200, Laurent Pinchart wrote:
> Hi Niklas,
> 
> On Tue, Dec 10, 2019 at 09:18:37AM +0100, Geert Uytterhoeven wrote:
> > On Mon, Dec 9, 2019 at 10:23 PM Niklas Söderlund wrote:
> > > The --field option takes an argument selecting the field order. Update
> > > the usage text to reflect this.
> > >
> > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> > > ---
> > >  yavta.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/yavta.c b/yavta.c
> > > index f83e143c051396c4..196345c323c662d3 100644
> > > --- a/yavta.c
> > > +++ b/yavta.c
> > > @@ -2286,7 +2286,7 @@ static void usage(const char *argv0)
> > >         printf("    --enum-formats              Enumerate formats\n");
> > >         printf("    --enum-inputs               Enumerate inputs\n");
> > >         printf("    --fd                        Use a numeric file descriptor insted of a device\n");
> > > -       printf("    --field                     Interlaced format field order\n");
> > > +       printf("    --field field               Set the format field order\n");
> > 
> > "Valid values for field are ..."?
> 
> Please let me know if you want to send a v2. yavta is a low-level tool
> so I don't think this is critical, users are expected to know that the
> value comes from the V4L2 API, but stating hit wouldn't hurt either.

I'm open to send a v2 based out your feedback.

I was prompted to write this patch when writing a test for vin-tests for 
TB/BT and I had to look in the yavta sources to find which strings yavta 
used for the different field options and misinterpreting the help for 
--field to only concern interlaced field formats.

As you state yavta is a low-level tool so I'm fine with the patch as is 
just to demonstrate that the --field argument takes a value and is not 
exclusive to interlaced formats or extend it similar to '--format help'.

> 
> > >         printf("    --log-status                Log device status\n");
> > >         printf("    --no-query                  Don't query capabilities on open\n");
> > >         printf("    --offset                    User pointer buffer offset from page start\n");
> 
> -- 
> Regards,
> 
> Laurent Pinchart

-- 
Regards,
Niklas Söderlund

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH] yavta: Fix usage documentation for --field option
  2019-12-13  1:02     ` Niklas Söderlund
@ 2021-04-21  8:09       ` Niklas Söderlund
  2021-04-21  8:58       ` Laurent Pinchart
  1 sibling, 0 replies; 6+ messages in thread
From: Niklas Söderlund @ 2021-04-21  8:09 UTC (permalink / raw)
  To: Laurent Pinchart; +Cc: Geert Uytterhoeven, Linux-Renesas

Hi Laurent,

Necro ping :-)

On 2019-12-13 02:02:09 +0100, Niklas Söderlund wrote:
> Hi Laurent,
> 
> Thanks for your feedback.
> 
> On 2019-12-13 01:45:35 +0200, Laurent Pinchart wrote:
> > Hi Niklas,
> > 
> > On Tue, Dec 10, 2019 at 09:18:37AM +0100, Geert Uytterhoeven wrote:
> > > On Mon, Dec 9, 2019 at 10:23 PM Niklas Söderlund wrote:
> > > > The --field option takes an argument selecting the field order. Update
> > > > the usage text to reflect this.
> > > >
> > > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> > > > ---
> > > >  yavta.c | 2 +-
> > > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > >
> > > > diff --git a/yavta.c b/yavta.c
> > > > index f83e143c051396c4..196345c323c662d3 100644
> > > > --- a/yavta.c
> > > > +++ b/yavta.c
> > > > @@ -2286,7 +2286,7 @@ static void usage(const char *argv0)
> > > >         printf("    --enum-formats              Enumerate formats\n");
> > > >         printf("    --enum-inputs               Enumerate inputs\n");
> > > >         printf("    --fd                        Use a numeric file descriptor insted of a device\n");
> > > > -       printf("    --field                     Interlaced format field order\n");
> > > > +       printf("    --field field               Set the format field order\n");
> > > 
> > > "Valid values for field are ..."?
> > 
> > Please let me know if you want to send a v2. yavta is a low-level tool
> > so I don't think this is critical, users are expected to know that the
> > value comes from the V4L2 API, but stating hit wouldn't hurt either.
> 
> I'm open to send a v2 based out your feedback.
> 
> I was prompted to write this patch when writing a test for vin-tests for 
> TB/BT and I had to look in the yavta sources to find which strings yavta 
> used for the different field options and misinterpreting the help for 
> --field to only concern interlaced field formats.
> 
> As you state yavta is a low-level tool so I'm fine with the patch as is 
> just to demonstrate that the --field argument takes a value and is not 
> exclusive to interlaced formats or extend it similar to '--format help'.
> 
> > 
> > > >         printf("    --log-status                Log device status\n");
> > > >         printf("    --no-query                  Don't query capabilities on open\n");
> > > >         printf("    --offset                    User pointer buffer offset from page start\n");
> > 
> > -- 
> > Regards,
> > 
> > Laurent Pinchart
> 
> -- 
> Regards,
> Niklas Söderlund

-- 
Regards,
Niklas Söderlund

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH] yavta: Fix usage documentation for --field option
  2019-12-13  1:02     ` Niklas Söderlund
  2021-04-21  8:09       ` Niklas Söderlund
@ 2021-04-21  8:58       ` Laurent Pinchart
  1 sibling, 0 replies; 6+ messages in thread
From: Laurent Pinchart @ 2021-04-21  8:58 UTC (permalink / raw)
  To: Niklas Söderlund; +Cc: Geert Uytterhoeven, Linux-Renesas

Hi Niklas,

On Fri, Dec 13, 2019 at 02:02:07AM +0100, Niklas Söderlund wrote:
> On 2019-12-13 01:45:35 +0200, Laurent Pinchart wrote:
> > On Tue, Dec 10, 2019 at 09:18:37AM +0100, Geert Uytterhoeven wrote:
> > > On Mon, Dec 9, 2019 at 10:23 PM Niklas Söderlund wrote:
> > > > The --field option takes an argument selecting the field order. Update
> > > > the usage text to reflect this.
> > > >
> > > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> > > > ---
> > > >  yavta.c | 2 +-
> > > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > >
> > > > diff --git a/yavta.c b/yavta.c
> > > > index f83e143c051396c4..196345c323c662d3 100644
> > > > --- a/yavta.c
> > > > +++ b/yavta.c
> > > > @@ -2286,7 +2286,7 @@ static void usage(const char *argv0)
> > > >         printf("    --enum-formats              Enumerate formats\n");
> > > >         printf("    --enum-inputs               Enumerate inputs\n");
> > > >         printf("    --fd                        Use a numeric file descriptor insted of a device\n");
> > > > -       printf("    --field                     Interlaced format field order\n");
> > > > +       printf("    --field field               Set the format field order\n");
> > > 
> > > "Valid values for field are ..."?
> > 
> > Please let me know if you want to send a v2. yavta is a low-level tool
> > so I don't think this is critical, users are expected to know that the
> > value comes from the V4L2 API, but stating hit wouldn't hurt either.
> 
> I'm open to send a v2 based out your feedback.
> 
> I was prompted to write this patch when writing a test for vin-tests for 
> TB/BT and I had to look in the yavta sources to find which strings yavta 
> used for the different field options and misinterpreting the help for 
> --field to only concern interlaced field formats.
> 
> As you state yavta is a low-level tool so I'm fine with the patch as is 
> just to demonstrate that the --field argument takes a value and is not 
> exclusive to interlaced formats or extend it similar to '--format help'.

Listing the supported values in the help text would be helpful I think.
As the number of possible values for the field is limited, I don't think
we need '--field help'. "Valid values for field are TB, BT, ..." should
be short enough.

> > > >         printf("    --log-status                Log device status\n");
> > > >         printf("    --no-query                  Don't query capabilities on open\n");
> > > >         printf("    --offset                    User pointer buffer offset from page start\n");

-- 
Regards,

Laurent Pinchart

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2021-04-21  8:58 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-12-09 21:22 [PATCH] yavta: Fix usage documentation for --field option Niklas Söderlund
2019-12-10  8:18 ` Geert Uytterhoeven
2019-12-12 23:45   ` Laurent Pinchart
2019-12-13  1:02     ` Niklas Söderlund
2021-04-21  8:09       ` Niklas Söderlund
2021-04-21  8:58       ` Laurent Pinchart

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