From: Paulo Zanoni <paulo.r.zanoni at intel.com>
Otherwise DP won't work.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 3ed5f60..3f633ca 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -325,12 +325,32 @@ intel_dp_check_edp(struct intel_dp *intel_dp)
static uint32_t
intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq)
{
- struct drm_device *dev = intel_dp_to_dev(intel_dp);
+ struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+ struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t ch_ctl = intel_dp->output_reg + 0x10;
uint32_t status;
bool done;
+ if (IS_HASWELL(dev)) {
+ switch (intel_dig_port->port) {
+ case PORT_A:
+ ch_ctl = DPA_AUX_CH_CTL;
+ break;
+ case PORT_B:
+ ch_ctl = PCH_DPB_AUX_CH_CTL;
+ break;
+ case PORT_C:
+ ch_ctl = PCH_DPC_AUX_CH_CTL;
+ break;
+ case PORT_D:
+ ch_ctl = PCH_DPD_AUX_CH_CTL;
+ break;
+ default:
+ BUG();
+ }
+ }
+
#define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0)
if (has_aux_irq)
done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, 10);
--
1.7.11.7
