On Fri, 11 Nov 2016, libin.y...@intel.com wrote:
> From: Libin Yang <libin.y...@intel.com>
>
> Some monitors will have noise or even no sound after
> applying the patch 6014ac12.
>
> In patch 6014ac12, it will reset the cts value to 0 for HDMI.
> However, we need to disable Enable CTS or M Prog bit. This is
> the initial setting after HW reset.
>
> Fixes: 6014ac122ed0 ("drm/i915/audio: set proper N/M in modeset")
> Signed-off-by: Libin Yang <libin.y...@intel.com>If this works, I guess all I can say is, Acked-by: Jani Nikula <jani.nik...@intel.com> > --- > drivers/gpu/drm/i915/intel_audio.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_audio.c > b/drivers/gpu/drm/i915/intel_audio.c > index 195223d..88ed869 100644 > --- a/drivers/gpu/drm/i915/intel_audio.c > +++ b/drivers/gpu/drm/i915/intel_audio.c > @@ -351,10 +351,13 @@ hsw_hdmi_audio_config_update(struct intel_crtc > *intel_crtc, enum port port, > > I915_WRITE(HSW_AUD_CFG(pipe), tmp); > > + /* > + * Let's disable "Enable CTS or M Prog bit" > + * and let HW calculate the value > + */ > tmp = I915_READ(HSW_AUD_M_CTS_ENABLE(pipe)); > - tmp &= ~AUD_CONFIG_M_MASK; > + tmp &= ~AUD_M_CTS_M_PROG_ENABLE; > tmp &= ~AUD_M_CTS_M_VALUE_INDEX; > - tmp |= AUD_M_CTS_M_PROG_ENABLE; > I915_WRITE(HSW_AUD_M_CTS_ENABLE(pipe), tmp); > } -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
