[Intel-gfx] [PATCH 05/39] drm/i915: move clock_gating_funcs to display.funcs

[Jani Nikula]

On Tue, 16 Aug 2022, Lucas De Marchi <lucas.demarchi at intel.com> wrote:
> On Thu, Aug 11, 2022 at 06:07:16PM +0300, Jani Nikula wrote:
>>Move display related members under drm_i915_private display sub-struct.
>>
>>Rename struct i915_clock_gating_funcs to intel_clock_gating_funcs while
>>at it.
>>
>>Signed-off-by: Jani Nikula <jani.nikula at intel.com>
>>---
>> .../gpu/drm/i915/display/intel_display_core.h |  4 ++
>> drivers/gpu/drm/i915/i915_drv.h               |  4 --
>> drivers/gpu/drm/i915/intel_pm.c               | 58 +++++++++----------
>> 3 files changed, 33 insertions(+), 33 deletions(-)
>>
>>diff --git a/drivers/gpu/drm/i915/display/intel_display_core.h b/drivers/gpu/drm/i915/display/intel_display_core.h
>>index ff76bd4079e4..98c6ccdc9100 100644
>>--- a/drivers/gpu/drm/i915/display/intel_display_core.h
>>+++ b/drivers/gpu/drm/i915/display/intel_display_core.h
>>@@ -10,6 +10,7 @@
>>
>> struct intel_atomic_state;
>> struct intel_cdclk_funcs;
>>+struct intel_clock_gating_funcs;
>> struct intel_crtc;
>> struct intel_crtc_state;
>> struct intel_dpll_funcs;
>>@@ -44,6 +45,9 @@ struct intel_display {
>>
>> 		/* irq display functions */
>> 		const struct intel_hotplug_funcs *hotplug;
>>+
>>+		/* pm private clock gating functions */
>>+		const struct intel_clock_gating_funcs *clock_gating;
>
> did we get this correct moving clock_gating to display? The question I'd
> ask is: if a platform doesn't have display, would it need to do
> anything clock-gating related? Looking at the current functions e.g. 
> gen9_init_clock_gating setting some chicken bits, I'd say yes.
>
> Another reasoning I'd have is regarding the registers it touches.
> And here they are not from display.
>
> So, I don't really understand the reason for moving clock_gating here,
> except that there are indeed several functions doing display-related
> things. Should we rather split one for i915 and one for i915-display?

Mmmh, maybe. It's hard to split the driver nicely when the hardware
isn't!

BR,
Jani.

-- 
Jani Nikula, Intel Open Source Graphics Center