[Intel-gfx] [PATCH 0/6] Introduce struct cdclk_step

[Ville Syrjälä]

On Fri, Sep 16, 2022 at 05:43:58PM -0700, Anusha Srivatsa wrote:
> This is a prep series for the actual cdclk refactoring
> that will be sent following this. Idea is to have a
> struct - cdclk_step that holds the following:
> - cdclk action (squash, crawl or modeset)
> - cdclk frequency
> which gets populated in atomic check. Driver
> uses the populated values during atomic commit
> to do the suitable sequence of actions like
> programming squash ctl registers in case of squashing
> or PLL sequence incase of modeset and so on.
> 
> This series just addresses the initial idea. The actual plumming
> in the atomic commit phase will be sent shortly.

OK, people keep ignoring what I say so I just typed up the
code quickly. This to me seems like the most straightforward
way to do what we need:
https://github.com/vsyrjala/linux.git cdclk_crawl_and_squash

Totally untested ofc, apart from me doing a quick scan
through our cdclk tables for the crawl+squahs platforms
to make sure that this approach should produce sane values.

> 
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Cc: Uma Shankar <uma.shankar at intel.com>
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> 
> Anusha Srivatsa (6):
>   drm/i915/display Add dg2_prog_squash_ctl() helper
>   drm/i915/display: add cdclk action struct to cdclk_config
>   drm/i915/display: Embed the new struct steps for squashing
>   drm/i915/display: Embed the new struct steps for crawling
>   drm/i915/display: Embed the new struct steps for modeset
>   drm/i915/display: Dump the new cdclk config values
> 
>  drivers/gpu/drm/i915/display/intel_cdclk.c | 77 +++++++++++++++++-----
>  drivers/gpu/drm/i915/display/intel_cdclk.h | 16 ++++-
>  2 files changed, 74 insertions(+), 19 deletions(-)
> 
> -- 
> 2.25.1

-- 
Ville Syrjälä
Intel