From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wang Xingchao Subject: [PATCH] drm/i915: HDMI/DP - ELD info refresh support for Haswell Date: Mon, 7 Jan 2013 13:20:14 +0800 Message-ID: <1357536014-6187-1-git-send-email-xingchao.wang@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id 8CEFCE5CE7 for ; Sun, 6 Jan 2013 21:40:40 -0800 (PST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: daniel.vetter@ffwll.ch, intel-gfx@lists.freedesktop.org, paulo.r.zanoni@intel.com List-Id: intel-gfx@lists.freedesktop.org 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 --- 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