[Intel-gfx] [PATCH] drm/i915/rkl: Add DP vswing programming tables

[Dhanavanthri, Swathi]

Reviewed-by: Swathi Dhanavanthri <swathi.dhanavanthri at intel.com>

-----Original Message-----
From: Matt Roper <matthew.d.roper at intel.com> 
Sent: Thursday, December 17, 2020 8:06 PM
To: intel-gfx at lists.freedesktop.org
Cc: Roper, Matthew D <matthew.d.roper at intel.com>
Subject: [PATCH] drm/i915/rkl: Add DP vswing programming tables

The bspec has been updated with new vswing programming for RKL DP.  No data is provided for HDMI or eDP, so for now we'll continue to assume that those are the same as TGL.

Bspec: 49291
Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c | 42 ++++++++++++++++++++++--
 1 file changed, 39 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 6863236df1d0..7fb168c52c58 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -766,6 +766,34 @@ static const struct cnl_ddi_buf_trans tgl_combo_phy_ddi_translations_edp_hbr2_ho
 	{ 0x6, 0x7F, 0x3F, 0x00, 0x00 },	/* 2	1	*/
 };
 
+static const struct cnl_ddi_buf_trans rkl_combo_phy_ddi_translations_dp_hbr[] = {
+						/* NT mV Trans mV db    */
+	{ 0xA, 0x2F, 0x3F, 0x00, 0x00 },	/* 350   350      0.0   */
+	{ 0xA, 0x4F, 0x37, 0x00, 0x08 },	/* 350   500      3.1   */
+	{ 0xC, 0x63, 0x2F, 0x00, 0x10 },	/* 350   700      6.0   */
+	{ 0x6, 0x7D, 0x2A, 0x00, 0x15 },	/* 350   900      8.2   */
+	{ 0xA, 0x4C, 0x3F, 0x00, 0x00 },	/* 500   500      0.0   */
+	{ 0xC, 0x73, 0x34, 0x00, 0x0B },	/* 500   700      2.9   */
+	{ 0x6, 0x7F, 0x2F, 0x00, 0x10 },	/* 500   900      5.1   */
+	{ 0xC, 0x6E, 0x3E, 0x00, 0x01 },	/* 650   700      0.6   */
+	{ 0x6, 0x7F, 0x35, 0x00, 0x0A },	/* 600   900      3.5   */
+	{ 0x6, 0x7F, 0x3F, 0x00, 0x00 },	/* 900   900      0.0   */
+};
+
+static const struct cnl_ddi_buf_trans rkl_combo_phy_ddi_translations_dp_hbr2_hbr3[] = {
+						/* NT mV Trans mV db    */
+	{ 0xA, 0x35, 0x3F, 0x00, 0x00 },	/* 350   350      0.0   */
+	{ 0xA, 0x50, 0x38, 0x00, 0x07 },	/* 350   500      3.1   */
+	{ 0xC, 0x61, 0x33, 0x00, 0x0C },	/* 350   700      6.0   */
+	{ 0x6, 0x7F, 0x2E, 0x00, 0x11 },	/* 350   900      8.2   */
+	{ 0xA, 0x47, 0x3F, 0x00, 0x00 },	/* 500   500      0.0   */
+	{ 0xC, 0x5F, 0x38, 0x00, 0x07 },	/* 500   700      2.9   */
+	{ 0x6, 0x7F, 0x2F, 0x00, 0x10 },	/* 500   900      5.1   */
+	{ 0xC, 0x5F, 0x3F, 0x00, 0x00 },	/* 650   700      0.6   */
+	{ 0x6, 0x7E, 0x36, 0x00, 0x09 },	/* 600   900      3.5   */
+	{ 0x6, 0x7F, 0x3F, 0x00, 0x00 },	/* 900   900      0.0   */
+};
+
 static bool is_hobl_buf_trans(const struct cnl_ddi_buf_trans *table)  {
 	return table == tgl_combo_phy_ddi_translations_edp_hbr2_hobl;
@@ -1259,7 +1287,10 @@ tgl_get_combo_buf_trans_dp(struct intel_encoder *encoder,
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 
 	if (crtc_state->port_clock > 270000) {
-		if (IS_TGL_U(dev_priv) || IS_TGL_Y(dev_priv)) {
+		if (IS_ROCKETLAKE(dev_priv)) {
+			*n_entries = ARRAY_SIZE(rkl_combo_phy_ddi_translations_dp_hbr2_hbr3);
+			return rkl_combo_phy_ddi_translations_dp_hbr2_hbr3;
+		} else if (IS_TGL_U(dev_priv) || IS_TGL_Y(dev_priv)) {
 			*n_entries = ARRAY_SIZE(tgl_uy_combo_phy_ddi_translations_dp_hbr2);
 			return tgl_uy_combo_phy_ddi_translations_dp_hbr2;
 		} else {
@@ -1267,8 +1298,13 @@ tgl_get_combo_buf_trans_dp(struct intel_encoder *encoder,
 			return tgl_combo_phy_ddi_translations_dp_hbr2;
 		}
 	} else {
-		*n_entries = ARRAY_SIZE(tgl_combo_phy_ddi_translations_dp_hbr);
-		return tgl_combo_phy_ddi_translations_dp_hbr;
+		if (IS_ROCKETLAKE(dev_priv)) {
+			*n_entries = ARRAY_SIZE(rkl_combo_phy_ddi_translations_dp_hbr);
+			return rkl_combo_phy_ddi_translations_dp_hbr;
+		} else {
+			*n_entries = ARRAY_SIZE(tgl_combo_phy_ddi_translations_dp_hbr);
+			return tgl_combo_phy_ddi_translations_dp_hbr;
+		}
 	}
 }
 
--
2.24.1