The vswing sequence is related to the DPIO phy, so move it closer to the
rest of DPIO phy related code.
Signed-off-by: Ander Conselvan de Oliveira
<ander.conselvan.de.olive...@intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 3 +++
drivers/gpu/drm/i915/intel_ddi.c | 38 +++++-----------------------------
drivers/gpu/drm/i915/intel_dpio_phy.c | 39 +++++++++++++++++++++++++++++++++++
3 files changed, 47 insertions(+), 33 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 8bdbbb5..77f1374 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3735,6 +3735,9 @@ u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv,
u32 reg);
void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
/* intel_dpio_phy.c */
+void bxt_ddi_phy_set_signal_level(struct drm_i915_private *dev_priv,
+ enum port port, u32 margin, u32 scale,
+ u32 enable, u32 deemphasis);
void bxt_ddi_phy_init(struct drm_i915_private *dev_priv, enum dpio_phy phy);
void bxt_ddi_phy_uninit(struct drm_i915_private *dev_priv, enum dpio_phy phy);
bool bxt_ddi_phy_is_enabled(struct drm_i915_private *dev_priv,
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index d69d231..f27cd67 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1477,7 +1477,6 @@ static void bxt_ddi_vswing_sequence(struct
drm_i915_private *dev_priv,
{
const struct bxt_ddi_buf_trans *ddi_translations;
u32 n_entries, i;
- uint32_t val;
if (type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp.low_vswing) {
n_entries = ARRAY_SIZE(bxt_ddi_translations_edp);
@@ -1506,38 +1505,11 @@ static void bxt_ddi_vswing_sequence(struct
drm_i915_private *dev_priv,
}
}
- /*
- * While we write to the group register to program all lanes at once we
- * can read only lane registers and we pick lanes 0/1 for that.
- */
- val = I915_READ(BXT_PORT_PCS_DW10_LN01(port));
- val &= ~(TX2_SWING_CALC_INIT | TX1_SWING_CALC_INIT);
- I915_WRITE(BXT_PORT_PCS_DW10_GRP(port), val);
-
- val = I915_READ(BXT_PORT_TX_DW2_LN0(port));
- val &= ~(MARGIN_000 | UNIQ_TRANS_SCALE);
- val |= ddi_translations[level].margin << MARGIN_000_SHIFT |
- ddi_translations[level].scale << UNIQ_TRANS_SCALE_SHIFT;
- I915_WRITE(BXT_PORT_TX_DW2_GRP(port), val);
-
- val = I915_READ(BXT_PORT_TX_DW3_LN0(port));
- val &= ~SCALE_DCOMP_METHOD;
- if (ddi_translations[level].enable)
- val |= SCALE_DCOMP_METHOD;
-
- if ((val & UNIQUE_TRANGE_EN_METHOD) && !(val & SCALE_DCOMP_METHOD))
- DRM_ERROR("Disabled scaling while ouniqetrangenmethod was set");
-
- I915_WRITE(BXT_PORT_TX_DW3_GRP(port), val);
-
- val = I915_READ(BXT_PORT_TX_DW4_LN0(port));
- val &= ~DE_EMPHASIS;
- val |= ddi_translations[level].deemphasis << DEEMPH_SHIFT;
- I915_WRITE(BXT_PORT_TX_DW4_GRP(port), val);
-
- val = I915_READ(BXT_PORT_PCS_DW10_LN01(port));
- val |= TX2_SWING_CALC_INIT | TX1_SWING_CALC_INIT;
- I915_WRITE(BXT_PORT_PCS_DW10_GRP(port), val);
+ bxt_ddi_phy_set_signal_level(dev_priv, port,
+ ddi_translations[level].margin,
+ ddi_translations[level].scale,
+ ddi_translations[level].enable,
+ ddi_translations[level].deemphasis);
}
static uint32_t translate_signal_level(int signal_levels)
diff --git a/drivers/gpu/drm/i915/intel_dpio_phy.c
b/drivers/gpu/drm/i915/intel_dpio_phy.c
index 6806296..2a18724 100644
--- a/drivers/gpu/drm/i915/intel_dpio_phy.c
+++ b/drivers/gpu/drm/i915/intel_dpio_phy.c
@@ -114,6 +114,45 @@
* -----------------
*/
+void bxt_ddi_phy_set_signal_level(struct drm_i915_private *dev_priv,
+ enum port port, u32 margin, u32 scale,
+ u32 enable, u32 deemphasis)
+{
+ u32 val;
+
+ /*
+ * While we write to the group register to program all lanes at once we
+ * can read only lane registers and we pick lanes 0/1 for that.
+ */
+ val = I915_READ(BXT_PORT_PCS_DW10_LN01(port));
+ val &= ~(TX2_SWING_CALC_INIT | TX1_SWING_CALC_INIT);
+ I915_WRITE(BXT_PORT_PCS_DW10_GRP(port), val);
+
+ val = I915_READ(BXT_PORT_TX_DW2_LN0(port));
+ val &= ~(MARGIN_000 | UNIQ_TRANS_SCALE);
+ val |= margin << MARGIN_000_SHIFT | scale << UNIQ_TRANS_SCALE_SHIFT;
+ I915_WRITE(BXT_PORT_TX_DW2_GRP(port), val);
+
+ val = I915_READ(BXT_PORT_TX_DW3_LN0(port));
+ val &= ~SCALE_DCOMP_METHOD;
+ if (enable)
+ val |= SCALE_DCOMP_METHOD;
+
+ if ((val & UNIQUE_TRANGE_EN_METHOD) && !(val & SCALE_DCOMP_METHOD))
+ DRM_ERROR("Disabled scaling while ouniqetrangenmethod was set");
+
+ I915_WRITE(BXT_PORT_TX_DW3_GRP(port), val);
+
+ val = I915_READ(BXT_PORT_TX_DW4_LN0(port));
+ val &= ~DE_EMPHASIS;
+ val |= deemphasis << DEEMPH_SHIFT;
+ I915_WRITE(BXT_PORT_TX_DW4_GRP(port), val);
+
+ val = I915_READ(BXT_PORT_PCS_DW10_LN01(port));
+ val |= TX2_SWING_CALC_INIT | TX1_SWING_CALC_INIT;
+ I915_WRITE(BXT_PORT_PCS_DW10_GRP(port), val);
+}
+
bool bxt_ddi_phy_is_enabled(struct drm_i915_private *dev_priv,
enum dpio_phy phy)
{
--
2.5.5
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