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drm/i915/tgl: Add DKL PHY vswing table for HDMI 

The bspec initially provided a single DKL PHY vswing table for both HDMI
and DP, but was recently updated to include an independent table for
HDMI.

Bspec: 49292
Fixes: 978c3e539b ("drm/i915/tgl: Add dkl phy programming sequences")
Cc: Clinton A Taylor <clinton.a.taylor@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191118180219.9309-1-matthew.d.roper@intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
(cherry picked from commit 362bfb995b)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
This commit is contained in:
Matt Roper 2019-11-18 10:02:19 -08:00 committed by Joonas Lahtinen
parent d74a7566be
commit 198dfe671f
1 changed files with 24 additions and 5 deletions
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29
drivers/gpu/drm/i915/display/intel_ddi.c
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@ -593,7 +593,7 @@ struct tgl_dkl_phy_ddi_buf_trans {
u32 dkl_de_emphasis_control;
};
static const struct tgl_dkl_phy_ddi_buf_trans tgl_dkl_phy_ddi_translations[] = {
static const struct tgl_dkl_phy_ddi_buf_trans tgl_dkl_phy_dp_ddi_trans[] = {
/* VS pre-emp Non-trans mV Pre-emph dB */
{ 0x7, 0x0, 0x00 }, /* 0 0 400mV 0 dB */
{ 0x5, 0x0, 0x03 }, /* 0 1 400mV 3.5 dB */
@ -607,6 +607,20 @@ static const struct tgl_dkl_phy_ddi_buf_trans tgl_dkl_phy_ddi_translations[] = {
{ 0x0, 0x0, 0x00 }, /* 3 0 1200mV 0 dB HDMI default */
};
static const struct tgl_dkl_phy_ddi_buf_trans tgl_dkl_phy_hdmi_ddi_trans[] = {
/* HDMI Preset VS Pre-emph */
{ 0x7, 0x0, 0x0 }, /* 1 400mV 0dB */
{ 0x6, 0x0, 0x0 }, /* 2 500mV 0dB */
{ 0x4, 0x0, 0x0 }, /* 3 650mV 0dB */
{ 0x2, 0x0, 0x0 }, /* 4 800mV 0dB */
{ 0x0, 0x0, 0x0 }, /* 5 1000mV 0dB */
{ 0x0, 0x0, 0x5 }, /* 6 Full -1.5 dB */
{ 0x0, 0x0, 0x6 }, /* 7 Full -1.8 dB */
{ 0x0, 0x0, 0x7 }, /* 8 Full -2 dB */
{ 0x0, 0x0, 0x8 }, /* 9 Full -2.5 dB */
{ 0x0, 0x0, 0xA }, /* 10 Full -3 dB */
};
static const struct ddi_buf_trans *
bdw_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries)
{
@ -898,7 +912,7 @@ static int intel_ddi_hdmi_level(struct drm_i915_private *dev_priv, enum port por
icl_get_combo_buf_trans(dev_priv, INTEL_OUTPUT_HDMI,
0, &n_entries);
else
n_entries = ARRAY_SIZE(tgl_dkl_phy_ddi_translations);
n_entries = ARRAY_SIZE(tgl_dkl_phy_hdmi_ddi_trans);
default_entry = n_entries - 1;
} else if (INTEL_GEN(dev_priv) == 11) {
if (intel_phy_is_combo(dev_priv, phy))
@ -2371,7 +2385,7 @@ 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(tgl_dkl_phy_ddi_translations);
n_entries = ARRAY_SIZE(tgl_dkl_phy_dp_ddi_trans);
} else if (INTEL_GEN(dev_priv) == 11) {
if (intel_phy_is_combo(dev_priv, phy))
icl_get_combo_buf_trans(dev_priv, encoder->type,
@ -2823,8 +2837,13 @@ tgl_dkl_phy_ddi_vswing_sequence(struct intel_encoder *encoder, int link_clock,
const struct tgl_dkl_phy_ddi_buf_trans *ddi_translations;
u32 n_entries, val, ln, dpcnt_mask, dpcnt_val;
n_entries = ARRAY_SIZE(tgl_dkl_phy_ddi_translations);
ddi_translations = tgl_dkl_phy_ddi_translations;
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 (level >= n_entries)
level = n_entries - 1;