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drm/i915/tgl: Add HBR and HBR2+ voltage swing table 

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@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Tested-by: Khaled Almahallawy <khaled.almahallawy@intel.com>
Reviewed-by: Khaled Almahallawy<khaled.almahallawy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200602205424.138143-1-jose.souza@intel.com
This commit is contained in:
José Roberto de Souza 2020-06-02 13:54:24 -07:00
parent 19aefbc778
commit 9fa6769952
1 changed files with 42 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
drivers/gpu/drm/i915/display/intel_ddi.c
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@ -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 */
@ -1028,6 +1042,22 @@ 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);
@ -1039,7 +1069,8 @@ 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))
@ -2122,7 +2153,8 @@ static u8 intel_ddi_dp_voltage_max(struct intel_dp *intel_dp)
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,
@ -2589,15 +2621,17 @@ 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;