From 9dfbffcf4ac0707097af9e6c1372192b9d03a357 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 24 Feb 2016 15:35:22 +0100 Subject: [PATCH] drm/i915: Fix bogus dig_port_map[] assignment for pre-HSW MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The recent commit [0bdf5a05647a: drm/i915: Add reverse mapping between port and intel_encoder] introduced a reverse mapping to retrieve intel_dig_port object from the port number. The code assumed that the port vs intel_dig_port are 1:1 mapping. But in reality, this was a too naive assumption. As Martin reported about the missing HDMI audio on his SNB machine, pre-HSW chips may have multiple intel_dig_port objects corresponding to the same port. Since we assign the mapping statically at the init time and the multiple objects override the map, it may not match with the actually enabled output. This patch tries to address the regression above. The reverse mapping is provided basically only for the audio callbacks, so now we set / clear the mapping dynamically at enabling and disabling HDMI/DP audio, so that we can always track the latest and correct object corresponding to the given port. Fixes: 0bdf5a05647a ('drm/i915: Add reverse mapping between port and intel_encoder') Reported-and-tested-by: Martin Kepplinger Cc: drm-intel-fixes@lists.freedesktop.org Signed-off-by: Takashi Iwai Reviewed-by: Ville Syrjälä Signed-off-by: Jani Nikula Link: http://patchwork.freedesktop.org/patch/msgid/1456324522-21591-1-git-send-email-tiwai@suse.de --- drivers/gpu/drm/i915/intel_audio.c | 3 +++ drivers/gpu/drm/i915/intel_ddi.c | 1 - drivers/gpu/drm/i915/intel_dp.c | 1 - drivers/gpu/drm/i915/intel_hdmi.c | 2 -- 4 files changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 31f6d212fb1b..30f921421b0c 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -527,6 +527,8 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) mutex_lock(&dev_priv->av_mutex); intel_dig_port->audio_connector = connector; + /* referred in audio callbacks */ + dev_priv->dig_port_map[port] = intel_encoder; mutex_unlock(&dev_priv->av_mutex); if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify) @@ -554,6 +556,7 @@ void intel_audio_codec_disable(struct intel_encoder *intel_encoder) mutex_lock(&dev_priv->av_mutex); intel_dig_port->audio_connector = NULL; + dev_priv->dig_port_map[port] = NULL; mutex_unlock(&dev_priv->av_mutex); if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 21a9b83f3bfc..62de9f4bce09 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -3326,7 +3326,6 @@ void intel_ddi_init(struct drm_device *dev, enum port port) intel_encoder->get_config = intel_ddi_get_config; intel_dig_port->port = port; - dev_priv->dig_port_map[port] = intel_encoder; intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) & (DDI_BUF_PORT_REVERSAL | DDI_A_4_LANES); diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 7a0f99db47b0..109ae6166db1 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -6045,7 +6045,6 @@ intel_dp_init(struct drm_device *dev, } intel_dig_port->port = port; - dev_priv->dig_port_map[port] = intel_encoder; intel_dig_port->dp.output_reg = output_reg; intel_dig_port->max_lanes = 4; diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index d8060e6251f8..e2dab4828508 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -2164,7 +2164,6 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port, void intel_hdmi_init(struct drm_device *dev, i915_reg_t hdmi_reg, enum port port) { - struct drm_i915_private *dev_priv = dev->dev_private; struct intel_digital_port *intel_dig_port; struct intel_encoder *intel_encoder; struct intel_connector *intel_connector; @@ -2233,7 +2232,6 @@ void intel_hdmi_init(struct drm_device *dev, intel_encoder->cloneable |= 1 << INTEL_OUTPUT_HDMI; intel_dig_port->port = port; - dev_priv->dig_port_map[port] = intel_encoder; intel_dig_port->hdmi.hdmi_reg = hdmi_reg; intel_dig_port->dp.output_reg = INVALID_MMIO_REG; intel_dig_port->max_lanes = 4; -- 2.20.1