2013/8/23 Jani Nikula <jani.nikula@xxxxxxxxx>:
> The spec says to notify prior to power down and after power up. It is
> unclear whether it makes a difference.
>
> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_display.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index bcb62fe..a6df68e 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -3404,8 +3404,10 @@ static void haswell_crtc_enable(struct drm_crtc *crtc)
> intel_update_fbc(dev);
> mutex_unlock(&dev->struct_mutex);
>
> - for_each_encoder_on_crtc(dev, crtc, encoder)
> + for_each_encoder_on_crtc(dev, crtc, encoder) {
> encoder->enable(encoder);
> + intel_opregion_notify_encoder(encoder, true);
No error checking. But if you followed my bikesheds on the previous
patches, I believe all the error cases have already been singaled by
error messages, so this could be fine.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx> (and you can
remove the DRAFT word form the patch title)
> + }
>
> /*
> * There seems to be a race in PCH platform hw (at least on some
> @@ -3519,8 +3521,10 @@ static void haswell_crtc_disable(struct drm_crtc *crtc)
> if (!intel_crtc->active)
> return;
>
> - for_each_encoder_on_crtc(dev, crtc, encoder)
> + for_each_encoder_on_crtc(dev, crtc, encoder) {
> + intel_opregion_notify_encoder(encoder, false);
> encoder->disable(encoder);
> + }
>
> intel_crtc_wait_for_pending_flips(crtc);
> drm_vblank_off(dev, pipe);
> --
> 1.7.9.5
>
--
Paulo Zanoni
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