Cc: Art Runyan <arthur.j.runyan@xxxxxxxxx> Signed-off-by: Ben Widawsky <ben@xxxxxxxxxxxx> --- drivers/gpu/drm/i915/intel_dp.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 6e4246f..dc216e7 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -405,6 +405,7 @@ intel_dp_aux_ch(struct intel_dp *intel_dp, uint32_t status; int try, precharge, clock = 0; bool has_aux_irq = INTEL_INFO(dev)->gen >= 5 && !IS_VALLEYVIEW(dev); + uint32_t timeout; /* dp aux is extremely sensitive to irq latency, hence request the * lowest possible wakeup latency and so prevent the cpu from going into @@ -419,6 +420,11 @@ intel_dp_aux_ch(struct intel_dp *intel_dp, else precharge = 5; + if (IS_BROADWELL(dev) && ch_ctl == DPA_AUX_CH_CTL) + timeout = DP_AUX_CH_CTL_TIME_OUT_600us; + else + timeout = DP_AUX_CH_CTL_TIME_OUT_400us; + intel_aux_display_runtime_get(dev_priv); /* Try to wait for any previous AUX channel activity */ @@ -454,7 +460,7 @@ intel_dp_aux_ch(struct intel_dp *intel_dp, I915_WRITE(ch_ctl, DP_AUX_CH_CTL_SEND_BUSY | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | - DP_AUX_CH_CTL_TIME_OUT_400us | + timeout | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT) | -- 1.8.4.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
