From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Rather than computing on demand, store also the aux data reg
offsets under intel_dp.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dp.c | 49 +++++++++++++++++++++++++++-------------
drivers/gpu/drm/i915/intel_drv.h | 1 +
2 files changed, 34 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 27df240..0e5f674 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -791,7 +791,6 @@ intel_dp_aux_ch(struct intel_dp *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->aux_ch_ctl_reg;
- uint32_t ch_data = ch_ctl + 4;
uint32_t aux_clock_divider;
int i, ret, recv_bytes;
uint32_t status;
@@ -857,7 +856,7 @@ intel_dp_aux_ch(struct intel_dp *intel_dp,
for (try = 0; try < 5; try++) {
/* Load the send data into the aux channel data registers */
for (i = 0; i < send_bytes; i += 4)
- I915_WRITE(ch_data + i,
+ I915_WRITE(intel_dp->aux_ch_data_reg[i >> 2],
intel_dp_pack_aux(send + i,
send_bytes - i));
@@ -921,7 +920,7 @@ done:
recv_bytes = recv_size;
for (i = 0; i < recv_bytes; i += 4)
- intel_dp_unpack_aux(I915_READ(ch_data + i),
+ intel_dp_unpack_aux(I915_READ(intel_dp->aux_ch_data_reg[i >> 2]),
recv + i, recv_bytes - i);
ret = recv_bytes;
@@ -1009,19 +1008,22 @@ intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
return ret;
}
-static uint32_t g4x_aux_ctl_reg(struct drm_i915_private *dev_priv,
- enum port port)
+static uint32_t g4x_aux_reg(struct drm_i915_private *dev_priv,
+ enum port port, int index)
{
- return DP_AUX_CH_CTL(port);
+ return index < 0 ? DP_AUX_CH_CTL(port) :
+ DP_AUX_CH_DATA(port, index);
}
-static uint32_t ilk_aux_ctl_reg(struct drm_i915_private *dev_priv,
- enum port port)
+static uint32_t ilk_aux_reg(struct drm_i915_private *dev_priv,
+ enum port port, int index)
{
if (port == PORT_A)
- return DP_AUX_CH_CTL(port);
+ return index < 0 ? DP_AUX_CH_CTL(port) :
+ DP_AUX_CH_DATA(port, index);
else
- return PCH_DP_AUX_CH_CTL(port);
+ return index < 0 ? PCH_DP_AUX_CH_CTL(port) :
+ PCH_DP_AUX_CH_DATA(port, index);
}
/*
@@ -1048,13 +1050,28 @@ static enum port skl_porte_aux_port(struct drm_i915_private *dev_priv)
}
}
-static uint32_t skl_aux_ctl_reg(struct drm_i915_private *dev_priv,
- enum port port)
+static uint32_t skl_aux_reg(struct drm_i915_private *dev_priv,
+ enum port port, int index)
{
if (port == PORT_E)
port = skl_porte_aux_port(dev_priv);
- return DP_AUX_CH_CTL(port);
+ return index < 0 ? DP_AUX_CH_CTL(port) :
+ DP_AUX_CH_DATA(port, index);
+}
+
+static void aux_reg_init(struct intel_dp *intel_dp,
+ uint32_t (*aux_reg)(struct drm_i915_private *dev_priv,
+ enum port port, int index))
+{
+ struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+ enum port port = dp_to_dig_port(intel_dp)->port;
+ int i;
+
+ intel_dp->aux_ch_ctl_reg = aux_reg(dev_priv, port, -1);
+
+ for (i = 0; i < ARRAY_SIZE(intel_dp->aux_ch_data_reg); i++)
+ intel_dp->aux_ch_data_reg[i] = aux_reg(dev_priv, port, i);
}
static void
@@ -1074,11 +1091,11 @@ intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector)
};
if (INTEL_INFO(dev_priv)->gen >= 9)
- intel_dp->aux_ch_ctl_reg = skl_aux_ctl_reg(dev_priv, port);
+ aux_reg_init(intel_dp, skl_aux_reg);
else if (HAS_PCH_SPLIT(dev_priv))
- intel_dp->aux_ch_ctl_reg = ilk_aux_ctl_reg(dev_priv, port);
+ aux_reg_init(intel_dp, ilk_aux_reg);
else
- intel_dp->aux_ch_ctl_reg = g4x_aux_ctl_reg(dev_priv, port);
+ aux_reg_init(intel_dp, g4x_aux_reg);
intel_dp->aux.name = ddc_name[port];
intel_dp->aux.dev = dev->dev;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 1df6ebf..3fea039 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -717,6 +717,7 @@ struct sink_crc {
struct intel_dp {
uint32_t output_reg;
uint32_t aux_ch_ctl_reg;
+ uint32_t aux_ch_data_reg[5];
uint32_t DP;
int link_rate;
uint8_t lane_count;
--
2.4.6
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