phy: qcom: edp: Add SC7280/SC8180X swing/pre-emphasis tables

SC7280 and SC8180X previously shared the same cfg because they did not use
swing/pre-emphasis tables. Add the corresponding tables for these
platforms. Since they have different PHY sub-versions, their eDP/DP mode
tables also differ, so move SC8180X to its own cfg instead of reusing the
SC7280 one.

Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://patch.msgid.link/20260427-edp_phy-v5-3-3bb876824475@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c
index 3266026cfe37212d23296e91ae7f0023c0b8ee22..3e613b3740327282bf10c3c280510c1c26e5f34b 100644 (file)
--- a/drivers/phy/qualcomm/phy-qcom-edp.c
+++ b/drivers/phy/qualcomm/phy-qcom-edp.c
@@ -165,6 +165,33 @@ static const struct qcom_edp_swing_pre_emph_cfg dp_phy_swing_pre_emph_cfg_v8 = {
        .pre_emphasis_hbr3_hbr2 = &dp_pre_emp_hbr2_hbr3,
 };
 
+static const u8 dp_swing_hbr2_hbr3_v2[4][4] = {
+       { 0x27, 0x2f, 0x36, 0xff },
+       { 0x31, 0x3e, 0x3f, 0xff },
+       { 0x3a, 0x3f, 0xff, 0xff },
+       { 0xff, 0xff, 0xff, 0xff }
+};
+
+static const u8 dp_pre_emp_hbr2_hbr3_v2[4][4] = {
+       { 0x20, 0x2e, 0x35, 0xff },
+       { 0x20, 0x2e, 0x35, 0xff },
+       { 0x20, 0x2e, 0xff, 0xff },
+       { 0xff, 0xff, 0xff, 0xff }
+};
+
+static const struct qcom_edp_swing_pre_emph_cfg dp_phy_swing_pre_emph_cfg_v2 = {
+       /*
+        * NOTE: The HPG does not specify a separate swing_hbr_rbr table.
+        * Reuse the HBR2/HBR3 table for now.
+        *
+        * TODO: Update this once the HPG explicitly defines RBR/HBR swing values.
+        */
+       .swing_hbr_rbr = &dp_swing_hbr2_hbr3_v2,
+       .swing_hbr3_hbr2 = &dp_swing_hbr2_hbr3_v2,
+       .pre_emphasis_hbr_rbr = &dp_pre_emp_hbr2_hbr3_v2,
+       .pre_emphasis_hbr3_hbr2 = &dp_pre_emp_hbr2_hbr3_v2,
+};
+
 static const u8 edp_swing_hbr_rbr[4][4] = {
        { 0x07, 0x0f, 0x16, 0x1f },
        { 0x0d, 0x16, 0x1e, 0xff },
@@ -208,6 +235,48 @@ static const u8 edp_phy_vco_div_cfg_v4[4] = {
        0x01, 0x01, 0x02, 0x00,
 };
 
+static const u8 edp_pre_emp_hbr_rbr_v2[4][4] = {
+       { 0x05, 0x12, 0x17, 0x1d },
+       { 0x05, 0x11, 0x18, 0xff },
+       { 0x06, 0x11, 0xff, 0xff },
+       { 0x00, 0xff, 0xff, 0xff }
+};
+
+static const u8 edp_pre_emp_hbr2_hbr3_v2[4][4] = {
+       { 0x0c, 0x15, 0x19, 0x1e },
+       { 0x08, 0x15, 0x19, 0xff },
+       { 0x0e, 0x14, 0xff, 0xff },
+       { 0x0d, 0xff, 0xff, 0xff }
+};
+
+static const struct qcom_edp_swing_pre_emph_cfg edp_phy_swing_pre_emph_cfg_v2 = {
+       .swing_hbr_rbr = &edp_swing_hbr_rbr,
+       .swing_hbr3_hbr2 = &edp_swing_hbr2_hbr3,
+       .pre_emphasis_hbr_rbr = &edp_pre_emp_hbr_rbr_v2,
+       .pre_emphasis_hbr3_hbr2 = &edp_pre_emp_hbr2_hbr3_v2,
+};
+
+static const u8 edp_swing_hbr2_hbr3_v3[4][4] = {
+       { 0x06, 0x11, 0x16, 0x1b },
+       { 0x0b, 0x19, 0x1f, 0xff },
+       { 0x18, 0x1f, 0xff, 0xff },
+       { 0x1f, 0xff, 0xff, 0xff }
+};
+
+static const u8 edp_pre_emp_hbr2_hbr3_v3[4][4] = {
+       { 0x0c, 0x15, 0x19, 0x1e },
+       { 0x09, 0x14, 0x19, 0xff },
+       { 0x0f, 0x14, 0xff, 0xff },
+       { 0x0d, 0xff, 0xff, 0xff }
+};
+
+static const struct qcom_edp_swing_pre_emph_cfg edp_phy_swing_pre_emph_cfg_v3 = {
+       .swing_hbr_rbr = &edp_swing_hbr_rbr,
+       .swing_hbr3_hbr2 = &edp_swing_hbr2_hbr3_v3,
+       .pre_emphasis_hbr_rbr = &edp_pre_emp_hbr_rbr,
+       .pre_emphasis_hbr3_hbr2 = &edp_pre_emp_hbr2_hbr3_v3,
+};
+
 static const u8 edp_phy_aux_cfg_v5[DP_AUX_CFG_SIZE] = {
        0x00, 0x13, 0xa4, 0x00, 0x0a, 0x26, 0x0a, 0x03, 0x37, 0x03, 0x02, 0x02, 0x00,
 };
@@ -298,9 +367,6 @@ static int qcom_edp_set_voltages(struct qcom_edp *edp, const struct phy_configur
        else
                cfg = edp->cfg->dp_swing_pre_emph_cfg;
 
-       if (!cfg)
-               return 0;
-
        for (i = 0; i < dp_opts->lanes; i++) {
                v_level = max(v_level, dp_opts->voltage[i]);
                p_level = max(p_level, dp_opts->pre[i]);
@@ -568,6 +634,16 @@ static const struct qcom_edp_phy_cfg sa8775p_dp_phy_cfg = {
 static const struct qcom_edp_phy_cfg sc7280_dp_phy_cfg = {
        .aux_cfg = edp_phy_aux_cfg_v4,
        .vco_div_cfg = edp_phy_vco_div_cfg_v4,
+       .dp_swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg,
+       .edp_swing_pre_emph_cfg = &edp_phy_swing_pre_emph_cfg_v3,
+       .ver_ops = &qcom_edp_phy_ops_v4,
+};
+
+static const struct qcom_edp_phy_cfg sc8180x_dp_phy_cfg = {
+       .aux_cfg = edp_phy_aux_cfg_v4,
+       .vco_div_cfg = edp_phy_vco_div_cfg_v4,
+       .dp_swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg_v2,
+       .edp_swing_pre_emph_cfg = &edp_phy_swing_pre_emph_cfg_v2,
        .ver_ops = &qcom_edp_phy_ops_v4,
 };
 
@@ -1348,7 +1424,7 @@ static const struct of_device_id qcom_edp_phy_match_table[] = {
        { .compatible = "qcom,glymur-dp-phy", .data = &glymur_phy_cfg, },
        { .compatible = "qcom,sa8775p-edp-phy", .data = &sa8775p_dp_phy_cfg, },
        { .compatible = "qcom,sc7280-edp-phy", .data = &sc7280_dp_phy_cfg, },
-       { .compatible = "qcom,sc8180x-edp-phy", .data = &sc7280_dp_phy_cfg, },
+       { .compatible = "qcom,sc8180x-edp-phy", .data = &sc8180x_dp_phy_cfg, },
        { .compatible = "qcom,sc8280xp-dp-phy", .data = &sc8280xp_dp_phy_cfg, },
        { .compatible = "qcom,sc8280xp-edp-phy", .data = &sc8280xp_edp_phy_cfg, },
        { .compatible = "qcom,x1e80100-dp-phy", .data = &x1e80100_phy_cfg, },