On Fri, 2015-07-17 at 13:47 +0530, Sonika Jindal wrote: > As per bspec, on BXT A0/A1, sw needs to activate DDIA HPD logic > and interrupts to check the external panel connection and DDIC HPD > logic for edp panel. > > v2: For DP, irq_port is used to determine the encoder instead of > hpd_pin and removing the edp HPD logic because port A HPD is not > present(Imre) > > Signed-off-by: Sonika Jindal <sonika.jindal@xxxxxxxxx> > --- > drivers/gpu/drm/i915/intel_ddi.c | 10 +++++++++- > drivers/gpu/drm/i915/intel_hdmi.c | 9 ++++++++- > 2 files changed, 17 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c > index e2c6f73..777e3a3 100644 > --- a/drivers/gpu/drm/i915/intel_ddi.c > +++ b/drivers/gpu/drm/i915/intel_ddi.c > @@ -3225,7 +3225,15 @@ void intel_ddi_init(struct drm_device *dev, enum port port) > goto err; > > intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; > - dev_priv->hotplug.irq_port[port] = intel_dig_port; > + /* > + * On BXT A0/A1, sw needs to activate DDIA HPD logic and > + * interrupts to check the external panel connection. > + */ > + if (IS_BROXTON(dev_priv) && (INTEL_REVID(dev) < BXT_REVID_B0) > + && port == PORT_B) > + dev_priv->hotplug.irq_port[PORT_A] = intel_dig_port; This happens to work but is confusing. irq_port[PORT_A] will be set here already and the above will simply overwrite it without explanation. I would also handle the port == PORT_A case and not set irq_port for it. The same swapping for hpd_pin is missing from intel_dp_init_connector(). > + else > + dev_priv->hotplug.irq_port[port] = intel_dig_port; > } > > /* In theory we don't need the encoder->type check, but leave it just in > diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c > index 70bad5b..94fa716 100644 > --- a/drivers/gpu/drm/i915/intel_hdmi.c > +++ b/drivers/gpu/drm/i915/intel_hdmi.c > @@ -1973,7 +1973,14 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port, > intel_hdmi->ddc_bus = GMBUS_PIN_1_BXT; > else > intel_hdmi->ddc_bus = GMBUS_PIN_DPB; > - intel_encoder->hpd_pin = HPD_PORT_B; > + /* > + * On BXT A0/A1, sw needs to activate DDIA HPD logic and > + * interrupts to check the external panel connection. > + */ > + if (IS_BROXTON(dev_priv) && (INTEL_REVID(dev) < BXT_REVID_B0)) > + intel_encoder->hpd_pin = HPD_PORT_A; > + else > + intel_encoder->hpd_pin = HPD_PORT_B; > break; > case PORT_C: > if (IS_BROXTON(dev_priv)) As I earlier pointed out with the above approach, you need to add support for HPD events on the HPD_PORT_A pin. If you look at the for_each_hpd_pin() macro and intel_hpd_irq_handler()/is_dig_port you'll notice that any interrupt event on the HPD_PORT_A pin will be ignored now. --Imre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
