On 2020-04-29 at 15:54:49 -0400, Sean Paul wrote:
> From: Sean Paul
>
> HDCP signalling should not be left on, WARN if it is
>
> Cc: Ville Syrjälä
> Cc: Daniel Vetter
> Reviewed-by: Ramalingam C
Just reconfirming the R-b.
-Ram
> Signed-off-by: Sean Paul
> Link:
> https://patchwork.freedesktop.org/patch/msgid/20191212190230.188505-4-s...@poorly.run
> #v2
> Link:
> https://patchwork.freedesktop.org/patch/msgid/20200117193103.156821-4-s...@poorly.run
> #v3
> Link:
> https://patchwork.freedesktop.org/patch/msgid/20200218220242.107265-4-s...@poorly.run
> #v4
> Link:
> https://patchwork.freedesktop.org/patch/msgid/20200305201236.152307-4-s...@poorly.run
> #v5
>
> Changes in v2:
> -Added to the set in lieu of just clearing the bit
> Changes in v3:
> -None
> Changes in v4:
> -None
> Changes in v5:
> -Change WARN_ON to drm_WARN_ON
> Changes in v6:
> -None
> ---
> drivers/gpu/drm/i915/display/intel_ddi.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
> b/drivers/gpu/drm/i915/display/intel_ddi.c
> index 5601673c3f30..08844ba9dcb5 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -1663,6 +1663,8 @@ void intel_ddi_disable_transcoder_func(const struct
> intel_crtc_state *crtc_state
>
> ctl = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
>
> + drm_WARN_ON(crtc->base.dev, ctl & TRANS_DDI_HDCP_SIGNALLING);
> +
> ctl &= ~TRANS_DDI_FUNC_ENABLE;
>
> if (IS_GEN_RANGE(dev_priv, 8, 10))
> --
> Sean Paul, Software Engineer, Google / Chromium OS
>
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