Oh, bxt is here..:) Spoke too soon.. But will need to make it based upon intel_encoder->hpd_pin because of the A0/A1 WA for BXT. Also, we need to make intel_digital_port_connected global to be accessed from intel_hdmi.c
Regards, Sonika -----Original Message----- From: Intel-gfx [mailto:intel-gfx-boun...@lists.freedesktop.org] On Behalf Of Jani Nikula Sent: Thursday, August 20, 2015 1:18 PM To: intel-gfx@lists.freedesktop.org Cc: Nikula, Jani Subject: [Intel-gfx] [PATCH v2 7/7] drm/i915/bxt: Use correct live status register for BXT platform BXT platform uses live status bits from 0x44440 register to obtain DP status on hotplug. The existing g4x_digital_port_connected() uses a different register and hence misses DP hotplug events on BXT platform. This patch fixes it by using the appropriate register(0x44440) and live status bits(3:5). Based on a patch by Durgadoss R <durgados...@intel.com>, from whom the commit message is shamelessly copy pasted. Reported-by: Durgadoss R <durgados...@intel.com> Signed-off-by: Jani Nikula <jani.nik...@intel.com> --- drivers/gpu/drm/i915/intel_dp.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 36291838409b..508156cc750d 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -4569,6 +4569,29 @@ static bool vlv_digital_port_connected(struct drm_i915_private *dev_priv, return I915_READ(PORT_HOTPLUG_STAT) & bit; } +static bool bxt_digital_port_connected(struct drm_i915_private *dev_priv, + struct intel_digital_port *port) { + u32 bit; + + switch (port->port) { + case PORT_A: + bit = BXT_DE_PORT_HP_DDIA; + break; + case PORT_B: + bit = BXT_DE_PORT_HP_DDIB; + break; + case PORT_C: + bit = BXT_DE_PORT_HP_DDIC; + break; + default: + MISSING_CASE(port->port); + return false; + } + + return I915_READ(GEN8_DE_PORT_ISR) & bit; } + /* * intel_digital_port_connected - is the specified port connected? * @dev_priv: i915 private structure @@ -4583,6 +4606,8 @@ static bool intel_digital_port_connected(struct drm_i915_private *dev_priv, return ibx_digital_port_connected(dev_priv, port); if (HAS_PCH_SPLIT(dev_priv)) return cpt_digital_port_connected(dev_priv, port); + else if (IS_BROXTON(dev_priv)) + return bxt_digital_port_connected(dev_priv, port); else if (IS_VALLEYVIEW(dev_priv)) return vlv_digital_port_connected(dev_priv, port); else -- 2.1.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
