Hi Vivi, > -----Original Message----- > From: Rodrigo Vivi [mailto:rodrigo.vivi at gmail.com] > Sent: Tuesday, January 15, 2013 1:00 AM > To: Wang, Xingchao > Cc: Daniel Vetter; intel-gfx; Zanoni, Paulo R > Subject: Re: [PATCH] drm/i915: HDMI/DP - ELD info refresh support > for Haswell > > Hi Wang, > > I would prefer to use defined HSW_AUD_PIN_ELD_CP_VLD directly at > read/write macros instead of creating an variable aud_cntrl_st2. Okay, will modify that in second version patch. > But this is minor, the other question I have here, why are you doing this only for > pipe A instead of pipe in use? > No, the patch is making fix for the current using pipe, not only for pipe A. please note below line: tmp |= ((AUDIO_OUTPUT_ENABLE_A | AUDIO_ELD_VALID_A) << (pipe * 4)); Thanks --xingchao > On Mon, Jan 7, 2013 at 3:20 AM, Wang Xingchao <xingchao.wang at intel.com> > wrote: > > ELD info should be updated dynamically according to hot plug event. > > For haswell chip, clear/set the eld valid bit and output enable bit > > from callback intel_disable/eanble_ddi(). > > > > Signed-off-by: Wang Xingchao <xingchao.wang at intel.com> > > --- > > drivers/gpu/drm/i915/intel_ddi.c | 20 ++++++++++++++++++++ > > 1 file changed, 20 insertions(+) > > > > diff --git a/drivers/gpu/drm/i915/intel_ddi.c > > b/drivers/gpu/drm/i915/intel_ddi.c > > index f02b3fe..a80125f 100644 > > --- a/drivers/gpu/drm/i915/intel_ddi.c > > +++ b/drivers/gpu/drm/i915/intel_ddi.c > > @@ -1274,10 +1274,15 @@ static void intel_ddi_post_disable(struct > > intel_encoder *intel_encoder) static void intel_enable_ddi(struct > > intel_encoder *intel_encoder) { > > struct drm_encoder *encoder = &intel_encoder->base; > > + struct drm_crtc *crtc = encoder->crtc; > > + struct intel_crtc *intel_crtc = to_intel_crtc(crtc); > > + int pipe = intel_crtc->pipe; > > struct drm_device *dev = encoder->dev; > > struct drm_i915_private *dev_priv = dev->dev_private; > > enum port port = intel_ddi_get_encoder_port(intel_encoder); > > int type = intel_encoder->type; > > + int aud_cntrl_st2 = HSW_AUD_PIN_ELD_CP_VLD; > > + int tmp; > > > > if (type == INTEL_OUTPUT_HDMI) { > > /* In HDMI/DVI mode, the port width, and > > swing/emphasis values @@ -1290,18 +1295,33 @@ static void > > intel_enable_ddi(struct intel_encoder *intel_encoder) > > > > ironlake_edp_backlight_on(intel_dp); > > } > > + > > + tmp = I915_READ(aud_cntrl_st2); > > + tmp |= ((AUDIO_OUTPUT_ENABLE_A | AUDIO_ELD_VALID_A) << > (pipe * 4)); > > + I915_WRITE(aud_cntrl_st2, tmp); > > } > > > > static void intel_disable_ddi(struct intel_encoder *intel_encoder) { > > struct drm_encoder *encoder = &intel_encoder->base; > > + struct drm_crtc *crtc = encoder->crtc; > > + struct intel_crtc *intel_crtc = to_intel_crtc(crtc); > > + int pipe = intel_crtc->pipe; > > int type = intel_encoder->type; > > + int aud_cntrl_st2 = HSW_AUD_PIN_ELD_CP_VLD; > > + struct drm_device *dev = encoder->dev; > > + struct drm_i915_private *dev_priv = dev->dev_private; > > + int tmp; > > > > if (type == INTEL_OUTPUT_EDP) { > > struct intel_dp *intel_dp = enc_to_intel_dp(encoder); > > > > ironlake_edp_backlight_off(intel_dp); > > } > > + > > + tmp = I915_READ(aud_cntrl_st2); > > + tmp &= ~((AUDIO_OUTPUT_ENABLE_A | AUDIO_ELD_VALID_A) << > (pipe * 4)); > > + I915_WRITE(aud_cntrl_st2, tmp); > > } > > > > int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv) > > -- > > 1.7.9.5 > > > > _______________________________________________ > > Intel-gfx mailing list > > Intel-gfx at lists.freedesktop.org > > http://lists.freedesktop.org/mailman/listinfo/intel-gfx > > > > -- > Rodrigo Vivi > Blog: http://blog.vivi.eng.br
