As latest update we have now 2 voltage swing tables for DP over DKL
PHY with only one difference in Level 0 pre-emphasis 3.
So with 2 tables for DP is time to have one single function to return
all DKL voltage swing tables.
BSpec: 49292
Cc: Khaled Almahallawy <khaled.almahallawy@xxxxxxxxx>
Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 50 ++++++++++++++++++++----
1 file changed, 42 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index cd211f48c401..763d76056ca9 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -641,6 +641,20 @@ static const struct tgl_dkl_phy_ddi_buf_trans tgl_dkl_phy_dp_ddi_trans[] = {
{ 0x7, 0x0, 0x00 }, /* 0 0 400mV 0 dB */
{ 0x5, 0x0, 0x05 }, /* 0 1 400mV 3.5 dB */
{ 0x2, 0x0, 0x0B }, /* 0 2 400mV 6 dB */
+ { 0x0, 0x0, 0x18 }, /* 0 3 400mV 9.5 dB */
+ { 0x5, 0x0, 0x00 }, /* 1 0 600mV 0 dB */
+ { 0x2, 0x0, 0x08 }, /* 1 1 600mV 3.5 dB */
+ { 0x0, 0x0, 0x14 }, /* 1 2 600mV 6 dB */
+ { 0x2, 0x0, 0x00 }, /* 2 0 800mV 0 dB */
+ { 0x0, 0x0, 0x0B }, /* 2 1 800mV 3.5 dB */
+ { 0x0, 0x0, 0x00 }, /* 3 0 1200mV 0 dB HDMI default */
+};
+
+static const struct tgl_dkl_phy_ddi_buf_trans tgl_dkl_phy_dp_ddi_trans_hbr2[] = {
+ /* VS pre-emp Non-trans mV Pre-emph dB */
+ { 0x7, 0x0, 0x00 }, /* 0 0 400mV 0 dB */
+ { 0x5, 0x0, 0x05 }, /* 0 1 400mV 3.5 dB */
+ { 0x2, 0x0, 0x0B }, /* 0 2 400mV 6 dB */
{ 0x0, 0x0, 0x19 }, /* 0 3 400mV 9.5 dB */
{ 0x5, 0x0, 0x00 }, /* 1 0 600mV 0 dB */
{ 0x2, 0x0, 0x08 }, /* 1 1 600mV 3.5 dB */
@@ -1014,6 +1028,22 @@ tgl_get_combo_buf_trans(struct drm_i915_private *dev_priv, int type, int rate,
return tgl_combo_phy_ddi_translations_dp_hbr;
}
+static const struct tgl_dkl_phy_ddi_buf_trans *
+tgl_get_dkl_buf_trans(struct drm_i915_private *dev_priv, int type, int rate,
+ int *n_entries)
+{
+ if (type == INTEL_OUTPUT_HDMI) {
+ *n_entries = ARRAY_SIZE(tgl_dkl_phy_hdmi_ddi_trans);
+ return tgl_dkl_phy_hdmi_ddi_trans;
+ } else if (rate > 270000) {
+ *n_entries = ARRAY_SIZE(tgl_dkl_phy_dp_ddi_trans_hbr2);
+ return tgl_dkl_phy_dp_ddi_trans_hbr2;
+ }
+
+ *n_entries = ARRAY_SIZE(tgl_dkl_phy_dp_ddi_trans);
+ return tgl_dkl_phy_dp_ddi_trans;
+}
+
static int intel_ddi_hdmi_level(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
@@ -1025,7 +1055,8 @@ static int intel_ddi_hdmi_level(struct intel_encoder *encoder)
tgl_get_combo_buf_trans(dev_priv, INTEL_OUTPUT_HDMI,
0, &n_entries);
else
- n_entries = ARRAY_SIZE(tgl_dkl_phy_hdmi_ddi_trans);
+ tgl_get_dkl_buf_trans(dev_priv, INTEL_OUTPUT_HDMI, 0,
+ &n_entries);
default_entry = n_entries - 1;
} else if (INTEL_GEN(dev_priv) == 11) {
if (intel_phy_is_combo(dev_priv, phy))
@@ -2108,7 +2139,8 @@ u8 intel_ddi_dp_voltage_max(struct intel_encoder *encoder)
tgl_get_combo_buf_trans(dev_priv, encoder->type,
intel_dp->link_rate, &n_entries);
else
- n_entries = ARRAY_SIZE(tgl_dkl_phy_dp_ddi_trans);
+ tgl_get_dkl_buf_trans(dev_priv, encoder->type,
+ intel_dp->link_rate, &n_entries);
} else if (INTEL_GEN(dev_priv) == 11) {
if (IS_ELKHARTLAKE(dev_priv))
ehl_get_combo_buf_trans(dev_priv, encoder->type,
@@ -2585,15 +2617,17 @@ tgl_dkl_phy_ddi_vswing_sequence(struct intel_encoder *encoder, int link_clock,
enum tc_port tc_port = intel_port_to_tc(dev_priv, encoder->port);
const struct tgl_dkl_phy_ddi_buf_trans *ddi_translations;
u32 n_entries, val, ln, dpcnt_mask, dpcnt_val;
+ int rate = 0;
- if (encoder->type == INTEL_OUTPUT_HDMI) {
- n_entries = ARRAY_SIZE(tgl_dkl_phy_hdmi_ddi_trans);
- ddi_translations = tgl_dkl_phy_hdmi_ddi_trans;
- } else {
- n_entries = ARRAY_SIZE(tgl_dkl_phy_dp_ddi_trans);
- ddi_translations = tgl_dkl_phy_dp_ddi_trans;
+ if (encoder->type != INTEL_OUTPUT_HDMI) {
+ struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+ rate = intel_dp->link_rate;
}
+ ddi_translations = tgl_get_dkl_buf_trans(dev_priv, encoder->type, rate,
+ &n_entries);
+
if (level >= n_entries)
level = n_entries - 1;
--
2.26.2
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