Per BSpec, 400us is "BDW+ Do not use this setting." Also rename 1600us to
MAX, as the value varies per platform - pre-CNL it means 1600us, and CNL is
3200us.
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: James Ausmus <james.ausmus@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 2 +-
drivers/gpu/drm/i915/intel_dp.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index ee0d4f14ac98..997a60bd6140 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5229,7 +5229,7 @@ enum {
#define DP_AUX_CH_CTL_TIME_OUT_400us (0 << 26)
#define DP_AUX_CH_CTL_TIME_OUT_600us (1 << 26)
#define DP_AUX_CH_CTL_TIME_OUT_800us (2 << 26)
-#define DP_AUX_CH_CTL_TIME_OUT_1600us (3 << 26)
+#define DP_AUX_CH_CTL_TIME_OUT_MAX (3 << 26) /* Varies per platform */
#define DP_AUX_CH_CTL_TIME_OUT_MASK (3 << 26)
#define DP_AUX_CH_CTL_RECEIVE_ERROR (1 << 25)
#define DP_AUX_CH_CTL_MESSAGE_SIZE_MASK (0x1f << 20)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 90e756c76f10..df301e00d9d9 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1019,7 +1019,7 @@ static uint32_t g4x_get_aux_send_ctl(struct intel_dp *intel_dp,
else
precharge = 5;
- if (IS_BROADWELL(dev_priv) && intel_dig_port->port == PORT_A)
+ if (IS_BROADWELL(dev_priv))
timeout = DP_AUX_CH_CTL_TIME_OUT_600us;
else
timeout = DP_AUX_CH_CTL_TIME_OUT_400us;
@@ -1044,7 +1044,7 @@ static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp,
DP_AUX_CH_CTL_DONE |
(has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) |
DP_AUX_CH_CTL_TIME_OUT_ERROR |
- DP_AUX_CH_CTL_TIME_OUT_1600us |
+ DP_AUX_CH_CTL_TIME_OUT_MAX |
DP_AUX_CH_CTL_RECEIVE_ERROR |
(send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(32) |
--
2.14.1
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