[Intel-gfx] [PATCH v2 3/3] drm/i915/tc/icl: Update TC vswing tables
José Roberto de Souza
jose.souza at intel.com
Mon Mar 30 21:00:44 UTC 2020
Specification was updated with vswing tables for different
configurations.
Also reordering icl_mg_phy_ddi_buf_trans struct to match table order.
BSpec: 21735
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 93 +++++++++++++++++++-----
1 file changed, 73 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index dedb86712a98..c214c9569109 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -583,23 +583,51 @@ static const struct cnl_ddi_buf_trans ehl_combo_phy_ddi_translations_dp[] = {
};
struct icl_mg_phy_ddi_buf_trans {
- u32 cri_txdeemph_override_5_0;
u32 cri_txdeemph_override_11_6;
+ u32 cri_txdeemph_override_5_0;
u32 cri_txdeemph_override_17_12;
};
-static const struct icl_mg_phy_ddi_buf_trans icl_mg_phy_ddi_translations[] = {
+static const struct icl_mg_phy_ddi_buf_trans icl_mg_phy_ddi_translations_rbr_hbr[] = {
+ /* Voltage swing pre-emphasis */
+ { 0x18, 0x00, 0x00 }, /* 0 0 */
+ { 0x1D, 0x00, 0x05 }, /* 0 1 */
+ { 0x24, 0x00, 0x0C }, /* 0 2 */
+ { 0x2B, 0x00, 0x14 }, /* 0 3 */
+ { 0x21, 0x00, 0x00 }, /* 1 0 */
+ { 0x2B, 0x00, 0x08 }, /* 1 1 */
+ { 0x30, 0x00, 0x0F }, /* 1 2 */
+ { 0x31, 0x00, 0x03 }, /* 2 0 */
+ { 0x34, 0x00, 0x0B }, /* 2 1 */
+ { 0x3F, 0x00, 0x00 }, /* 3 0 */
+};
+
+static const struct icl_mg_phy_ddi_buf_trans icl_mg_phy_ddi_translations_hbr2_hbr3[] = {
/* Voltage swing pre-emphasis */
- { 0x0, 0x1B, 0x00 }, /* 0 0 */
- { 0x0, 0x23, 0x08 }, /* 0 1 */
- { 0x0, 0x2D, 0x12 }, /* 0 2 */
- { 0x0, 0x00, 0x00 }, /* 0 3 */
- { 0x0, 0x23, 0x00 }, /* 1 0 */
- { 0x0, 0x2B, 0x09 }, /* 1 1 */
- { 0x0, 0x2E, 0x11 }, /* 1 2 */
- { 0x0, 0x2F, 0x00 }, /* 2 0 */
- { 0x0, 0x33, 0x0C }, /* 2 1 */
- { 0x0, 0x00, 0x00 }, /* 3 0 */
+ { 0x18, 0x00, 0x00 }, /* 0 0 */
+ { 0x1D, 0x00, 0x05 }, /* 0 1 */
+ { 0x24, 0x00, 0x0C }, /* 0 2 */
+ { 0x2B, 0x00, 0x14 }, /* 0 3 */
+ { 0x26, 0x00, 0x00 }, /* 1 0 */
+ { 0x2C, 0x00, 0x07 }, /* 1 1 */
+ { 0x33, 0x00, 0x0C }, /* 1 2 */
+ { 0x2E, 0x00, 0x00 }, /* 2 0 */
+ { 0x36, 0x00, 0x09 }, /* 2 1 */
+ { 0x3F, 0x00, 0x00 }, /* 3 0 */
+};
+
+static const struct icl_mg_phy_ddi_buf_trans icl_mg_phy_ddi_translations_hdmi[] = {
+ /* HDMI Preset VS Pre-emph */
+ { 0x1A, 0x0, 0x0 }, /* 1 400mV 0dB */
+ { 0x20, 0x0, 0x0 }, /* 2 500mV 0dB */
+ { 0x29, 0x0, 0x0 }, /* 3 650mV 0dB */
+ { 0x32, 0x0, 0x0 }, /* 4 800mV 0dB */
+ { 0x3F, 0x0, 0x0 }, /* 5 1000mV 0dB */
+ { 0x3A, 0x0, 0x5 }, /* 6 Full -1.5 dB */
+ { 0x39, 0x0, 0x6 }, /* 7 Full -1.8 dB */
+ { 0x38, 0x0, 0x7 }, /* 8 Full -2 dB */
+ { 0x37, 0x0, 0x8 }, /* 9 Full -2.5 dB */
+ { 0x36, 0x0, 0x9 }, /* 10 Full -3 dB */
};
struct tgl_dkl_phy_ddi_buf_trans {
@@ -943,6 +971,22 @@ icl_get_combo_buf_trans(struct drm_i915_private *dev_priv, int type, int rate,
return icl_combo_phy_ddi_translations_dp_hbr2;
}
+static const struct icl_mg_phy_ddi_buf_trans *
+icl_get_mg_buf_trans(struct drm_i915_private *dev_priv, int type, int rate,
+ int *n_entries)
+{
+ if (type == INTEL_OUTPUT_HDMI) {
+ *n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations_hdmi);
+ return icl_mg_phy_ddi_translations_hdmi;
+ } else if (rate > 270000) {
+ *n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations_hbr2_hbr3);
+ return icl_mg_phy_ddi_translations_hbr2_hbr3;
+ }
+
+ *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 drm_i915_private *dev_priv, int type, int rate,
int *n_entries)
@@ -988,7 +1032,8 @@ static int intel_ddi_hdmi_level(struct intel_encoder *encoder)
icl_get_combo_buf_trans(dev_priv, INTEL_OUTPUT_HDMI,
0, &n_entries);
else
- n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations);
+ icl_get_mg_buf_trans(dev_priv, INTEL_OUTPUT_HDMI, 0,
+ &n_entries);
default_entry = n_entries - 1;
} else if (IS_CANNONLAKE(dev_priv)) {
cnl_get_buf_trans_hdmi(dev_priv, &n_entries);
@@ -2062,7 +2107,8 @@ u8 intel_ddi_dp_voltage_max(struct intel_encoder *encoder)
icl_get_combo_buf_trans(dev_priv, encoder->type,
intel_dp->link_rate, &n_entries);
else
- n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations);
+ icl_get_mg_buf_trans(dev_priv, encoder->type,
+ intel_dp->link_rate, &n_entries);
} else if (IS_CANNONLAKE(dev_priv)) {
if (encoder->type == INTEL_OUTPUT_EDP)
cnl_get_buf_trans_edp(dev_priv, &n_entries);
@@ -2377,17 +2423,23 @@ static void icl_combo_phy_ddi_vswing_sequence(struct intel_encoder *encoder,
}
static void icl_mg_phy_ddi_vswing_sequence(struct intel_encoder *encoder,
- int link_clock,
- u32 level)
+ int link_clock, u32 level,
+ enum intel_output_type type)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum tc_port tc_port = intel_port_to_tc(dev_priv, encoder->port);
const struct icl_mg_phy_ddi_buf_trans *ddi_translations;
u32 n_entries, val;
- int ln;
+ int ln, rate = 0;
+
+ if (type != INTEL_OUTPUT_HDMI) {
+ struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+ rate = intel_dp->link_rate;
+ }
- n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations);
- ddi_translations = icl_mg_phy_ddi_translations;
+ ddi_translations = icl_get_mg_buf_trans(dev_priv, type, rate,
+ &n_entries);
/* The table does not have values for level 3 and level 9. */
if (level >= n_entries || level == 3 || level == 9) {
drm_dbg_kms(&dev_priv->drm,
@@ -2511,7 +2563,8 @@ static void icl_ddi_vswing_sequence(struct intel_encoder *encoder,
if (intel_phy_is_combo(dev_priv, phy))
icl_combo_phy_ddi_vswing_sequence(encoder, level, type);
else
- icl_mg_phy_ddi_vswing_sequence(encoder, link_clock, level);
+ icl_mg_phy_ddi_vswing_sequence(encoder, link_clock, level,
+ type);
}
static void
--
2.26.0
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