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drm/i915: Query the vswing levels per-lane for icl mg phy
Prepare for per-lane drive settings by querying the desired vswing level per-lane. Note that the code only does two loops, with each one writing the levels for two TX lanes. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211006204937.30774-10-ville.syrjala@linux.intel.com Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
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31e914a230
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1 changed files with 12 additions and 1 deletions
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@ -1164,7 +1164,6 @@ static void icl_mg_phy_set_signal_levels(struct intel_encoder *encoder,
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{
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struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
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enum tc_port tc_port = intel_port_to_tc(dev_priv, encoder->port);
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int level = intel_ddi_level(encoder, crtc_state, 0);
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const struct intel_ddi_buf_trans *trans;
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int n_entries, ln;
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u32 val;
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@ -1189,12 +1188,18 @@ static void icl_mg_phy_set_signal_levels(struct intel_encoder *encoder,
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/* Program MG_TX_SWINGCTRL with values from vswing table */
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for (ln = 0; ln < 2; ln++) {
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int level;
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level = intel_ddi_level(encoder, crtc_state, 2*ln+0);
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val = intel_de_read(dev_priv, MG_TX1_SWINGCTRL(ln, tc_port));
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val &= ~CRI_TXDEEMPH_OVERRIDE_17_12_MASK;
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val |= CRI_TXDEEMPH_OVERRIDE_17_12(
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trans->entries[level].mg.cri_txdeemph_override_17_12);
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intel_de_write(dev_priv, MG_TX1_SWINGCTRL(ln, tc_port), val);
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level = intel_ddi_level(encoder, crtc_state, 2*ln+1);
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val = intel_de_read(dev_priv, MG_TX2_SWINGCTRL(ln, tc_port));
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val &= ~CRI_TXDEEMPH_OVERRIDE_17_12_MASK;
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val |= CRI_TXDEEMPH_OVERRIDE_17_12(
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@ -1204,6 +1209,10 @@ static void icl_mg_phy_set_signal_levels(struct intel_encoder *encoder,
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/* Program MG_TX_DRVCTRL with values from vswing table */
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for (ln = 0; ln < 2; ln++) {
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int level;
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level = intel_ddi_level(encoder, crtc_state, 2*ln+0);
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val = intel_de_read(dev_priv, MG_TX1_DRVCTRL(ln, tc_port));
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val &= ~(CRI_TXDEEMPH_OVERRIDE_11_6_MASK |
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CRI_TXDEEMPH_OVERRIDE_5_0_MASK);
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@ -1214,6 +1223,8 @@ static void icl_mg_phy_set_signal_levels(struct intel_encoder *encoder,
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CRI_TXDEEMPH_OVERRIDE_EN;
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intel_de_write(dev_priv, MG_TX1_DRVCTRL(ln, tc_port), val);
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level = intel_ddi_level(encoder, crtc_state, 2*ln+1);
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val = intel_de_read(dev_priv, MG_TX2_DRVCTRL(ln, tc_port));
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val &= ~(CRI_TXDEEMPH_OVERRIDE_11_6_MASK |
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CRI_TXDEEMPH_OVERRIDE_5_0_MASK);
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