[Intel-gfx] [PATCH] drm/i915/icl: Fix initing the DSI DSC power refcount during HW readout

[Jani Nikula]

On Wed, 09 Dec 2020, Imre Deak <imre.deak at intel.com> wrote:
> For an enabled DSC during HW readout the corresponding power reference
> is taken along the CRTC power domain references in
> get_crtc_power_domains(). Remove the incorrect get ref from the DSI
> encoder hook.

Does this fix [1] which is v5.11-rc2 on TGL DSI? Should we pick this up
for fixes?


BR,
Jani.


[1] https://intel-gfx-ci.01.org/tree/drm-intel-fixes/CI_DIF_538/fi-tgl-dsi/igt@gem_exec_suspend@basic-s0.html



>
> Cc: Vandita Kulkarni <vandita.kulkarni at intel.com>
> Cc: Jani Nikula <jani.nikula at intel.com>
> Signed-off-by: Imre Deak <imre.deak at intel.com>
> ---
>  drivers/gpu/drm/i915/display/icl_dsi.c | 4 ----
>  1 file changed, 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
> index a9439b415603..b3533a32f8ba 100644
> --- a/drivers/gpu/drm/i915/display/icl_dsi.c
> +++ b/drivers/gpu/drm/i915/display/icl_dsi.c
> @@ -1616,10 +1616,6 @@ static void gen11_dsi_get_power_domains(struct intel_encoder *encoder,
>  
>  	get_dsi_io_power_domains(i915,
>  				 enc_to_intel_dsi(encoder));
> -
> -	if (crtc_state->dsc.compression_enable)
> -		intel_display_power_get(i915,
> -					intel_dsc_power_domain(crtc_state));
>  }
>  
>  static bool gen11_dsi_get_hw_state(struct intel_encoder *encoder,

-- 
Jani Nikula, Intel Open Source Graphics Center