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[0/6] Remove last users of v4l2-clk and remove v4l2-clk

Message ID 20210104165739.116404-1-ezequiel@collabora.com (mailing list archive)
Headers show
Series Remove last users of v4l2-clk and remove v4l2-clk | expand

Message

Ezequiel Garcia Jan. 4, 2021, 4:57 p.m. UTC
The V4L2 temporary clock helper API is used by just one last capture
driver, pxa-camera, which registers a dummy clock; and then by just
a few sensor drivers, consuming clocks through the v4l2-clk API.

It's possible to convert these few last users, and so remove
the v4l2-clk API, which hasn't been used for a few years.

The sensor drivers are already using the CCF API,
which v4l2-clk API uses as fallback.

To convert the pxa-camera driver, a fixed-rate clock
is registered for the mach-based platforms that still exist,
for mt9m111 to work (the only sensor that PXA currently
registers).

Ezequiel Garcia (6):
  media: mach-pxa: Register the camera sensor fixed-rate clock
  media: pxa_camera: Drop the v4l2-clk clock register
  media: ov9640: Use the generic clock framework
  media: mt9m111: Use the generic clock framework
  media: ov6650: Use the generic clock framework
  media: Remove the legacy v4l2-clk API

 .../driver-api/media/v4l2-clocks.rst          |  31 --
 Documentation/driver-api/media/v4l2-core.rst  |   1 -
 arch/arm/mach-pxa/devices.c                   |   8 +
 drivers/media/i2c/mt9m111.c                   |  17 +-
 drivers/media/i2c/ov6650.c                    |  26 +-
 drivers/media/i2c/ov9640.c                    |  15 +-
 drivers/media/i2c/ov9640.h                    |   4 +-
 drivers/media/platform/pxa_camera.c           |  30 +-
 drivers/media/v4l2-core/Makefile              |   2 +-
 drivers/media/v4l2-core/v4l2-clk.c            | 321 ------------------
 include/media/v4l2-clk.h                      |  73 ----
 11 files changed, 37 insertions(+), 491 deletions(-)
 delete mode 100644 Documentation/driver-api/media/v4l2-clocks.rst
 delete mode 100644 drivers/media/v4l2-core/v4l2-clk.c
 delete mode 100644 include/media/v4l2-clk.h

Comments

Ezequiel Garcia Jan. 4, 2021, 8:51 p.m. UTC | #1
Robert's mailbox is bouncing, so let's add Daniel
and Haojian.

Could you guys review the PXA changes?

Thanks,
Ezequiel

On Mon, 2021-01-04 at 13:57 -0300, Ezequiel Garcia wrote:
> The V4L2 temporary clock helper API is used by just one last capture
> driver, pxa-camera, which registers a dummy clock; and then by just
> a few sensor drivers, consuming clocks through the v4l2-clk API.
> 
> It's possible to convert these few last users, and so remove
> the v4l2-clk API, which hasn't been used for a few years.
> 
> The sensor drivers are already using the CCF API,
> which v4l2-clk API uses as fallback.
> 
> To convert the pxa-camera driver, a fixed-rate clock
> is registered for the mach-based platforms that still exist,
> for mt9m111 to work (the only sensor that PXA currently
> registers).
> 
> Ezequiel Garcia (6):
>   media: mach-pxa: Register the camera sensor fixed-rate clock
>   media: pxa_camera: Drop the v4l2-clk clock register
>   media: ov9640: Use the generic clock framework
>   media: mt9m111: Use the generic clock framework
>   media: ov6650: Use the generic clock framework
>   media: Remove the legacy v4l2-clk API
> 
>  .../driver-api/media/v4l2-clocks.rst          |  31 --
>  Documentation/driver-api/media/v4l2-core.rst  |   1 -
>  arch/arm/mach-pxa/devices.c                   |   8 +
>  drivers/media/i2c/mt9m111.c                   |  17 +-
>  drivers/media/i2c/ov6650.c                    |  26 +-
>  drivers/media/i2c/ov9640.c                    |  15 +-
>  drivers/media/i2c/ov9640.h                    |   4 +-
>  drivers/media/platform/pxa_camera.c           |  30 +-
>  drivers/media/v4l2-core/Makefile              |   2 +-
>  drivers/media/v4l2-core/v4l2-clk.c            | 321 ------------------
>  include/media/v4l2-clk.h                      |  73 ----
>  11 files changed, 37 insertions(+), 491 deletions(-)
>  delete mode 100644 Documentation/driver-api/media/v4l2-clocks.rst
>  delete mode 100644 drivers/media/v4l2-core/v4l2-clk.c
>  delete mode 100644 include/media/v4l2-clk.h
> 
> -- 
> 2.29.2
> 
>
Petr Cvek Jan. 5, 2021, 4:08 p.m. UTC | #2
I don't have a working magician setup at the moment, so I can only test the compilation (which works).

Petr

Dne 04. 01. 21 v 17:57 Ezequiel Garcia napsal(a):
> The V4L2 temporary clock helper API is used by just one last capture
> driver, pxa-camera, which registers a dummy clock; and then by just
> a few sensor drivers, consuming clocks through the v4l2-clk API.
> 
> It's possible to convert these few last users, and so remove
> the v4l2-clk API, which hasn't been used for a few years.
> 
> The sensor drivers are already using the CCF API,
> which v4l2-clk API uses as fallback.
> 
> To convert the pxa-camera driver, a fixed-rate clock
> is registered for the mach-based platforms that still exist,
> for mt9m111 to work (the only sensor that PXA currently
> registers).
> 
> Ezequiel Garcia (6):
>   media: mach-pxa: Register the camera sensor fixed-rate clock
>   media: pxa_camera: Drop the v4l2-clk clock register
>   media: ov9640: Use the generic clock framework
>   media: mt9m111: Use the generic clock framework
>   media: ov6650: Use the generic clock framework
>   media: Remove the legacy v4l2-clk API
> 
>  .../driver-api/media/v4l2-clocks.rst          |  31 --
>  Documentation/driver-api/media/v4l2-core.rst  |   1 -
>  arch/arm/mach-pxa/devices.c                   |   8 +
>  drivers/media/i2c/mt9m111.c                   |  17 +-
>  drivers/media/i2c/ov6650.c                    |  26 +-
>  drivers/media/i2c/ov9640.c                    |  15 +-
>  drivers/media/i2c/ov9640.h                    |   4 +-
>  drivers/media/platform/pxa_camera.c           |  30 +-
>  drivers/media/v4l2-core/Makefile              |   2 +-
>  drivers/media/v4l2-core/v4l2-clk.c            | 321 ------------------
>  include/media/v4l2-clk.h                      |  73 ----
>  11 files changed, 37 insertions(+), 491 deletions(-)
>  delete mode 100644 Documentation/driver-api/media/v4l2-clocks.rst
>  delete mode 100644 drivers/media/v4l2-core/v4l2-clk.c
>  delete mode 100644 include/media/v4l2-clk.h
>
Ezequiel Garcia Jan. 6, 2021, 2:24 p.m. UTC | #3
Hi Petr,

On Tue, 2021-01-05 at 17:08 +0100, Petr Cvek wrote:
> I don't have a working magician setup at the moment, so I can only test the compilation (which works).
> 

Thanks for the testing! Does that mean I can take your Tested-by ?

> Petr
> 
> Dne 04. 01. 21 v 17:57 Ezequiel Garcia napsal(a):
> > The V4L2 temporary clock helper API is used by just one last capture
> > driver, pxa-camera, which registers a dummy clock; and then by just
> > a few sensor drivers, consuming clocks through the v4l2-clk API.
> > 
> > It's possible to convert these few last users, and so remove
> > the v4l2-clk API, which hasn't been used for a few years.
> > 
> > The sensor drivers are already using the CCF API,
> > which v4l2-clk API uses as fallback.
> > 
> > To convert the pxa-camera driver, a fixed-rate clock
> > is registered for the mach-based platforms that still exist,
> > for mt9m111 to work (the only sensor that PXA currently
> > registers).
> > 
> > Ezequiel Garcia (6):
> >   media: mach-pxa: Register the camera sensor fixed-rate clock
> >   media: pxa_camera: Drop the v4l2-clk clock register
> >   media: ov9640: Use the generic clock framework
> >   media: mt9m111: Use the generic clock framework
> >   media: ov6650: Use the generic clock framework
> >   media: Remove the legacy v4l2-clk API
> > 
> >  .../driver-api/media/v4l2-clocks.rst          |  31 --
> >  Documentation/driver-api/media/v4l2-core.rst  |   1 -
> >  arch/arm/mach-pxa/devices.c                   |   8 +
> >  drivers/media/i2c/mt9m111.c                   |  17 +-
> >  drivers/media/i2c/ov6650.c                    |  26 +-
> >  drivers/media/i2c/ov9640.c                    |  15 +-
> >  drivers/media/i2c/ov9640.h                    |   4 +-
> >  drivers/media/platform/pxa_camera.c           |  30 +-
> >  drivers/media/v4l2-core/Makefile              |   2 +-
> >  drivers/media/v4l2-core/v4l2-clk.c            | 321 ------------------
> >  include/media/v4l2-clk.h                      |  73 ----
> >  11 files changed, 37 insertions(+), 491 deletions(-)
> >  delete mode 100644 Documentation/driver-api/media/v4l2-clocks.rst
> >  delete mode 100644 drivers/media/v4l2-core/v4l2-clk.c
> >  delete mode 100644 include/media/v4l2-clk.h
> >
Petr Cvek Jan. 8, 2021, 11:04 a.m. UTC | #4
Dne 06. 01. 21 v 15:24 Ezequiel Garcia napsal(a):
> Hi Petr,
> 
> On Tue, 2021-01-05 at 17:08 +0100, Petr Cvek wrote:
>> I don't have a working magician setup at the moment, so I can only test the compilation (which works).
>>
> 
> Thanks for the testing! Does that mean I can take your Tested-by ?

Well it was just a compilation and I don't know ov6650 nor mt9m111. And I may have some time in the next month to try it on the real device.


> 
>> Petr
>>
>> Dne 04. 01. 21 v 17:57 Ezequiel Garcia napsal(a):
>>> The V4L2 temporary clock helper API is used by just one last capture
>>> driver, pxa-camera, which registers a dummy clock; and then by just
>>> a few sensor drivers, consuming clocks through the v4l2-clk API.
>>>
>>> It's possible to convert these few last users, and so remove
>>> the v4l2-clk API, which hasn't been used for a few years.
>>>
>>> The sensor drivers are already using the CCF API,
>>> which v4l2-clk API uses as fallback.
>>>
>>> To convert the pxa-camera driver, a fixed-rate clock
>>> is registered for the mach-based platforms that still exist,
>>> for mt9m111 to work (the only sensor that PXA currently
>>> registers).
>>>
>>> Ezequiel Garcia (6):
>>>   media: mach-pxa: Register the camera sensor fixed-rate clock
>>>   media: pxa_camera: Drop the v4l2-clk clock register
>>>   media: ov9640: Use the generic clock framework
>>>   media: mt9m111: Use the generic clock framework
>>>   media: ov6650: Use the generic clock framework
>>>   media: Remove the legacy v4l2-clk API
>>>
>>>  .../driver-api/media/v4l2-clocks.rst          |  31 --
>>>  Documentation/driver-api/media/v4l2-core.rst  |   1 -
>>>  arch/arm/mach-pxa/devices.c                   |   8 +
>>>  drivers/media/i2c/mt9m111.c                   |  17 +-
>>>  drivers/media/i2c/ov6650.c                    |  26 +-
>>>  drivers/media/i2c/ov9640.c                    |  15 +-
>>>  drivers/media/i2c/ov9640.h                    |   4 +-
>>>  drivers/media/platform/pxa_camera.c           |  30 +-
>>>  drivers/media/v4l2-core/Makefile              |   2 +-
>>>  drivers/media/v4l2-core/v4l2-clk.c            | 321 ------------------
>>>  include/media/v4l2-clk.h                      |  73 ----
>>>  11 files changed, 37 insertions(+), 491 deletions(-)
>>>  delete mode 100644 Documentation/driver-api/media/v4l2-clocks.rst
>>>  delete mode 100644 drivers/media/v4l2-core/v4l2-clk.c
>>>  delete mode 100644 include/media/v4l2-clk.h
>>>
> 
>