<div dir="ltr"> <div class="gmail_quote"><div dir="ltr">On Thu, Aug 6, 2015 at 12:45 AM Xiong Zhang <<a href="mailto:xiong.y.zhang@intel.com">xiong.y.zhang@intel.com</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">DDI-E doesn't have the correspondent GMBUS pin. We rely on VBT to tell us which one it being used instead. The DVI/HDMI on shared port couldn't exist. This patch isn't tested without hardware wchich has HDMI on DDI-E. Signed-off-by: Xiong Zhang <<a href="mailto:xiong.y.zhang@intel.com" target="_blank">xiong.y.zhang@intel.com</a>> --- drivers/gpu/drm/i915/i915_drv.h | 5 +++++ drivers/gpu/drm/i915/intel_bios.c | 28 ++++++++++++++++++++++++---- drivers/gpu/drm/i915/intel_hdmi.c | 18 ++++++++++++++++++ 3 files changed, 47 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 6d93334..5d8e7fe 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1414,6 +1414,10 @@ enum modeset_restore { #define DP_AUX_C 0x20 #define DP_AUX_D 0x30 +#define DDC_PIN_B 0x05 +#define DDC_PIN_C 0x04 +#define DDC_PIN_D 0x06 + struct ddi_vbt_port_info { /* * This is an index in the HDMI/DVI DDI buffer translation table. @@ -1428,6 +1432,7 @@ struct ddi_vbt_port_info { uint8_t supports_dp:1; uint8_t alternate_aux_channel; + uint8_t alternate_ddc_pin; }; enum psr_lines_to_wait { diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index 16cdf17..265227f 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -894,7 +894,7 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, uint8_t hdmi_level_shift; int i, j; bool is_dvi, is_hdmi, is_dp, is_edp, is_crt; - uint8_t aux_channel; + uint8_t aux_channel, ddc_pin; /* Each DDI port can have more than one value on the "DVO Port" field, * so look for all the possible values for each port and abort if more * than one is found. */ @@ -928,6 +928,7 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, return; aux_channel = child->raw[25]; + ddc_pin = child->common.ddc_pin; is_dvi = child->common.device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING; is_dp = child->common.device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT; @@ -959,11 +960,30 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port)); if (is_dvi) { - if (child->common.ddc_pin == 0x05 && port != PORT_B) + if (port == PORT_E) { + info->alternate_ddc_pin = ddc_pin; + /* if DDIE share ddc pin with other port, then + * dvi/hdmi couldn't exist on the shared port. </blockquote><div> </div><div>I see a trailing space here </div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> + * Otherwise they share the same ddc bin and system + * couldn't communicate with them seperately. */ + if (ddc_pin == DDC_PIN_B) { + dev_priv->vbt.ddi_port_info[PORT_B].supports_dvi = 0; + dev_priv->vbt.ddi_port_info[PORT_B].supports_hdmi = 0; + } + else if (ddc_pin == DDC_PIN_C) { + dev_priv->vbt.ddi_port_info[PORT_C].supports_dvi = 0; + dev_priv->vbt.ddi_port_info[PORT_C].supports_hdmi = 0; + } </blockquote><div> </div><div>and here</div><div> </div><div>But the concept and patch is totally right so with trailing whitespaces fixed</div><div>Reviewed-by: Rodrigo Vivi <<a href="mailto:rodrigo.vivi@intel.com">rodrigo.vivi@intel.com</a>></div><div> </div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> + else if (ddc_pin == DDC_PIN_D) { + dev_priv->vbt.ddi_port_info[PORT_D].supports_dvi = 0; + dev_priv->vbt.ddi_port_info[PORT_D].supports_hdmi = 0; + } + } + else if (ddc_pin == DDC_PIN_B && port != PORT_B) DRM_DEBUG_KMS("Unexpected DDC pin for port B\n"); - if (child->common.ddc_pin == 0x04 && port != PORT_C) + else if (ddc_pin == DDC_PIN_C && port != PORT_C) DRM_DEBUG_KMS("Unexpected DDC pin for port C\n"); - if (child->common.ddc_pin == 0x06 && port != PORT_D) + else if (ddc_pin == DDC_PIN_D && port != PORT_D) DRM_DEBUG_KMS("Unexpected DDC pin for port D\n"); } </blockquote><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 70bad5b..e1f6e81 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -1991,6 +1991,24 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port, intel_hdmi->ddc_bus = GMBUS_PIN_DPD; intel_encoder->hpd_pin = HPD_PORT_D; break; + case PORT_E: + /* On SKL PORT E doesn't have seperate GMBUS pin + * We rely on VBT to set a proper alternate GMBUS pin. */ + switch (dev_priv->vbt.ddi_port_info[PORT_E].alternate_ddc_pin) { + case DDC_PIN_B: + intel_hdmi->ddc_bus = GMBUS_PIN_DPB; + break; + case DDC_PIN_C: + intel_hdmi->ddc_bus = GMBUS_PIN_DPC; + break; + case DDC_PIN_D: + intel_hdmi->ddc_bus = GMBUS_PIN_DPD; + break; + default: + BUG(); + } + intel_encoder->hpd_pin = HPD_PORT_E; + break; case PORT_A: intel_encoder->hpd_pin = HPD_PORT_A; /* Internal port only for eDP. */ -- 2.1.4 _______________________________________________ Intel-gfx mailing list <a href="mailto:Intel-gfx@lists.freedesktop.org" target="_blank">Intel-gfx@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/intel-gfx" rel="noreferrer" target="_blank">http://lists.freedesktop.org/mailman/listinfo/intel-gfx</a> </blockquote></div></div>