Re: [PATCH v5 4/6] drm/i915/skl: Ensure pipes with changed wms get added to the state

Matt Roper
2016-08-02T21:28:08Z

On Tue, Aug 02, 2016 at 02:52:52PM -0400, Lyude wrote:
> If we're enabling a pipe, we'll need to modify the watermarks on all
> other active pipes. Since those pipes won't be added to the state on
> their own, we need to add them ourselves.

All pipes (crtc's) are already added to the state if we have a change in
active pipes. I think what you meant to write was "...we'll need to
modify the watermarks on all active *planes*. Since those *planes*
won't..."

Aside from the commit message, I believe the logic is correct, so you
can consider this
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
once you reword it.

Matt

>
> Signed-off-by: Lyude <cpaul@redhat.com>
> Cc: stable@vger.kernel.org
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Cc: Daniel Vetter <daniel.vetter@intel.com>
> Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
> Cc: Hans de Goede <hdegoede@redhat.com>
> Cc: Matt Roper <matthew.d.roper@intel.com>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 53adcbf..6b2452b 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4085,6 +4085,10 @@ skl_compute_ddb(struct drm_atomic_state *state)
> ret = skl_allocate_pipe_ddb(cstate, ddb);
> if (ret)
> return ret;
> +
> + ret = drm_atomic_add_affected_planes(state, &intel_crtc->base);
> + if (ret)
> + return ret;
> }
>
> return 0;
> --
> 2.7.4
>

--
Matt Roper
Graphics Software Engineer
IoTG Platform Enabling & Development
Intel Corporation
(916) 356-2795