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[0/2] media: camss: Simplify and improve power management of VFEs

Message ID 20220704221548.629302-1-vladimir.zapolskiy@linaro.org (mailing list archive)
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Series media: camss: Simplify and improve power management of VFEs | expand

Message

Vladimir Zapolskiy July 4, 2022, 10:15 p.m. UTC
Since a rework of CAMSS power domain management for newer platforms done in
commit 2f6f8af67203 ("media: camss: Refactor VFE power domain toggling"),
all operations over CAMSS imply enablement of all power domains described
in the correspondent device tree node. Apparently it's too excessive and it's
quite a complicated scheme to allow simple addition of newer platforms with
even more power domains.

I would appreciate, if somebody can test the changes on db820 for any probable
regressions.

The change is based on changes in clock framework [1] and on a recent fix-up [2]
in camss.

[1] https://lore.kernel.org/linux-clk/20220519214133.1728979-1-vladimir.zapolskiy@linaro.org/
[2] https://lore.kernel.org/linux-media/20220704220814.629130-1-vladimir.zapolskiy@linaro.org/

Vladimir Zapolskiy (2):
  media: camss: Collect information about a number of lite VFEs
  media: camss: Split power domain management

 .../media/platform/qcom/camss/camss-vfe-170.c | 20 +++++++-
 .../media/platform/qcom/camss/camss-vfe-480.c | 20 +++++++-
 drivers/media/platform/qcom/camss/camss.c     | 50 ++++++++++---------
 drivers/media/platform/qcom/camss/camss.h     |  1 +
 4 files changed, 66 insertions(+), 25 deletions(-)

Comments

Vladimir Zapolskiy Sept. 9, 2022, 12:22 p.m. UTC | #1
On 7/5/22 01:15, Vladimir Zapolskiy wrote:
> Since a rework of CAMSS power domain management for newer platforms done in
> commit 2f6f8af67203 ("media: camss: Refactor VFE power domain toggling"),
> all operations over CAMSS imply enablement of all power domains described
> in the correspondent device tree node. Apparently it's too excessive and it's
> quite a complicated scheme to allow simple addition of newer platforms with
> even more power domains.
> 
> I would appreciate, if somebody can test the changes on db820 for any probable
> regressions.
> 
> The change is based on changes in clock framework [1] and on a recent fix-up [2]
> in camss.
> 
> [1] https://lore.kernel.org/linux-clk/20220519214133.1728979-1-vladimir.zapolskiy@linaro.org/
> [2] https://lore.kernel.org/linux-media/20220704220814.629130-1-vladimir.zapolskiy@linaro.org/
> 
> Vladimir Zapolskiy (2):
>    media: camss: Collect information about a number of lite VFEs
>    media: camss: Split power domain management
> 
>   .../media/platform/qcom/camss/camss-vfe-170.c | 20 +++++++-
>   .../media/platform/qcom/camss/camss-vfe-480.c | 20 +++++++-
>   drivers/media/platform/qcom/camss/camss.c     | 50 ++++++++++---------
>   drivers/media/platform/qcom/camss/camss.h     |  1 +
>   4 files changed, 66 insertions(+), 25 deletions(-)
> 

Gentle ping, I hope the changes are good to be included.

--
Best wishes,
Vladimir