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Subject[PATCH 2/2] drm/i915/edp/jsl: Update vswing table for HBR and HBR2
Date
JSL has update in vswing table for eDP

BSpec: 21257
Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 67 ++++++++++++++++++++++--
1 file changed, 64 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 4d06178cd76c..fa08463bcf2e 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -582,6 +582,34 @@ static const struct cnl_ddi_buf_trans ehl_combo_phy_ddi_translations_dp[] = {
{ 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */
};

+static const struct cnl_ddi_buf_trans jsl_combo_phy_ddi_translations_edp_hbr[] = {
+ /* NT mV Trans mV db */
+ { 0x8, 0x7F, 0x3F, 0x00, 0x00 }, /* 200 200 0.0 */
+ { 0x8, 0x7F, 0x38, 0x00, 0x07 }, /* 200 250 1.9 */
+ { 0x1, 0x7F, 0x33, 0x00, 0x0C }, /* 200 300 3.5 */
+ { 0xA, 0x35, 0x36, 0x00, 0x09 }, /* 200 350 4.9 */
+ { 0x8, 0x7F, 0x3F, 0x00, 0x00 }, /* 250 250 0.0 */
+ { 0x1, 0x7F, 0x38, 0x00, 0x07 }, /* 250 300 1.6 */
+ { 0xA, 0x35, 0x35, 0x00, 0x0A }, /* 250 350 2.9 */
+ { 0x1, 0x7F, 0x3F, 0x00, 0x00 }, /* 300 300 0.0 */
+ { 0xA, 0x35, 0x38, 0x00, 0x07 }, /* 300 350 1.3 */
+ { 0xA, 0x35, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */
+};
+
+static const struct cnl_ddi_buf_trans jsl_combo_phy_ddi_translations_edp_hbr2[] = {
+ /* NT mV Trans mV db */
+ { 0x8, 0x7F, 0x3F, 0x00, 0x00 }, /* 200 200 0.0 */
+ { 0x8, 0x7F, 0x3F, 0x00, 0x00 }, /* 200 250 1.9 */
+ { 0x1, 0x7F, 0x3D, 0x00, 0x02 }, /* 200 300 3.5 */
+ { 0xA, 0x35, 0x38, 0x00, 0x07 }, /* 200 350 4.9 */
+ { 0x8, 0x7F, 0x3F, 0x00, 0x00 }, /* 250 250 0.0 */
+ { 0x1, 0x7F, 0x3F, 0x00, 0x00 }, /* 250 300 1.6 */
+ { 0xA, 0x35, 0x3A, 0x00, 0x05 }, /* 250 350 2.9 */
+ { 0x1, 0x7F, 0x3F, 0x00, 0x00 }, /* 300 300 0.0 */
+ { 0xA, 0x35, 0x38, 0x00, 0x07 }, /* 300 350 1.3 */
+ { 0xA, 0x35, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */
+};
+
struct icl_mg_phy_ddi_buf_trans {
u32 cri_txdeemph_override_11_6;
u32 cri_txdeemph_override_5_0;
@@ -1069,7 +1097,6 @@ icl_get_mg_buf_trans(struct intel_encoder *encoder, int type, int rate,
*n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations_rbr_hbr);
return icl_mg_phy_ddi_translations_rbr_hbr;
}
-
static const struct cnl_ddi_buf_trans *
ehl_get_combo_buf_trans(struct intel_encoder *encoder, int type, int rate,
int *n_entries)
@@ -1098,6 +1125,34 @@ ehl_get_combo_buf_trans(struct intel_encoder *encoder, int type, int rate,
}
}

+static const struct cnl_ddi_buf_trans *
+jsl_get_combo_buf_trans(struct intel_encoder *encoder, int type, int rate,
+ int *n_entries)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+ switch (type) {
+ case INTEL_OUTPUT_HDMI:
+ *n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_hdmi);
+ return icl_combo_phy_ddi_translations_hdmi;
+ case INTEL_OUTPUT_EDP:
+ if (dev_priv->vbt.edp.low_vswing) {
+ if (rate > 270000) {
+ *n_entries = ARRAY_SIZE(jsl_combo_phy_ddi_translations_edp_hbr2);
+ return jsl_combo_phy_ddi_translations_edp_hbr2;
+ } else {
+ *n_entries = ARRAY_SIZE(jsl_combo_phy_ddi_translations_edp_hbr);
+ return jsl_combo_phy_ddi_translations_edp_hbr;
+ }
+ }
+ /* fall through */
+ default:
+ /* All combo DP and eDP ports that do not support low_vswing */
+ *n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_dp_hbr2);
+ return icl_combo_phy_ddi_translations_dp_hbr2;
+ }
+}
+
static const struct cnl_ddi_buf_trans *
tgl_get_combo_buf_trans(struct intel_encoder *encoder, int type, int rate,
int *n_entries)
@@ -2265,9 +2320,12 @@ static u8 intel_ddi_dp_voltage_max(struct intel_dp *intel_dp)
tgl_get_dkl_buf_trans(encoder, encoder->type,
intel_dp->link_rate, &n_entries);
} else if (INTEL_GEN(dev_priv) == 11) {
- if (IS_ELKHARTLAKE(dev_priv))
+ if (IS_JASPERLAKE(dev_priv))
+ jsl_get_combo_buf_trans(encoder, encoder->type,
+ intel_dp->link_rate, &n_entries);
+ else if (IS_ELKHARTLAKE(dev_priv))
ehl_get_combo_buf_trans(encoder, encoder->type,
- intel_dp->link_rate, &n_entries);
+ intel_dp->link_rate, &n_entries);
else if (intel_phy_is_combo(dev_priv, phy))
icl_get_combo_buf_trans(encoder, encoder->type,
intel_dp->link_rate, &n_entries);
@@ -2454,6 +2512,9 @@ static void icl_ddi_combo_vswing_program(struct intel_encoder *encoder,
if (INTEL_GEN(dev_priv) >= 12)
ddi_translations = tgl_get_combo_buf_trans(encoder, type, rate,
&n_entries);
+ else if (IS_JASPERLAKE(dev_priv))
+ ddi_translations = jsl_get_combo_buf_trans(encoder, type, rate,
+ &n_entries);
else if (IS_ELKHARTLAKE(dev_priv))
ddi_translations = ehl_get_combo_buf_trans(encoder, type, rate,
&n_entries);
--
2.25.1
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