--- /dev/null
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_snps_phy.h"
+
+/**
+ * DOC: Synopsis PHY support
+ *
+ * Synopsis PHYs are primarily programmed by looking up magic register values
+ * in tables rather than calculating the necessary values at runtime.
+ *
+ * Of special note is that the SNPS PHYs include a dedicated port PLL, known as
+ * an "MPLLB." The MPLLB replaces the shared DPLL functionality used on other
+ * platforms and must be programming directly during the modeset sequence
+ * since it is not handled by the shared DPLL framework as on other platforms.
+ */
+
+/*
+ * Basic DP link rates with 100 MHz reference clock.
+ */
+
+static const struct intel_mpllb_state dg2_dp_rbr_100 = {
+ .clock = 162000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 20) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 2),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 226),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+ .mpllb_fracn2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 39321) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 3),
+};
+
+static const struct intel_mpllb_state dg2_dp_hbr1_100 = {
+ .clock = 270000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 20) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 184),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+};
+
+static const struct intel_mpllb_state dg2_dp_hbr2_100 = {
+ .clock = 540000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 20) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 184),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+};
+
+static const struct intel_mpllb_state dg2_dp_hbr3_100 = {
+ .clock = 810000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 19) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 292),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+};
+
+static const struct intel_mpllb_state *dg2_dp_100_tables[] = {
+ &dg2_dp_rbr_100,
+ &dg2_dp_hbr1_100,
+ &dg2_dp_hbr2_100,
+ &dg2_dp_hbr3_100,
+ NULL,
+};
+
+/*
+ * Basic DP link rates with 38.4 MHz reference clock.
+ */
+
+static const struct intel_mpllb_state dg2_dp_rbr_38_4 = {
+ .clock = 162000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 1),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 5) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 25) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 2),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 304),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+ .mpllb_fracn2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 49152),
+};
+
+static const struct intel_mpllb_state dg2_dp_hbr1_38_4 = {
+ .clock = 270000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 1),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 5) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 25) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 248),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+ .mpllb_fracn2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 40960),
+};
+
+static const struct intel_mpllb_state dg2_dp_hbr2_38_4 = {
+ .clock = 540000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 1),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 5) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 25) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 248),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+ .mpllb_fracn2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 40960),
+};
+
+static const struct intel_mpllb_state dg2_dp_hbr3_38_4 = {
+ .clock = 810000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 1),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 26) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 388),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+ .mpllb_fracn2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 61440),
+};
+
+static const struct intel_mpllb_state *dg2_dp_38_4_tables[] = {
+ &dg2_dp_rbr_38_4,
+ &dg2_dp_hbr1_38_4,
+ &dg2_dp_hbr2_38_4,
+ &dg2_dp_hbr3_38_4,
+ NULL,
+};
+
+/*
+ * eDP link rates with 100 MHz reference clock.
+ */
+
+static const struct intel_mpllb_state dg2_edp_r216 = {
+ .clock = 216000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 19) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 312),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+ .mpllb_fracn2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 52428) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 4),
+ .mpllb_sscen =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 50961),
+ .mpllb_sscstep =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 65752),
+};
+
+static const struct intel_mpllb_state dg2_edp_r243 = {
+ .clock = 243000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 20) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 356),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+ .mpllb_fracn2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 2),
+ .mpllb_sscen =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 57331),
+ .mpllb_sscstep =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 73971),
+};
+
+static const struct intel_mpllb_state dg2_edp_r324 = {
+ .clock = 324000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 20) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 2),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 226),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+ .mpllb_fracn2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 39321) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 3),
+ .mpllb_sscen =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 38221),
+ .mpllb_sscstep =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 49314),
+};
+
+static const struct intel_mpllb_state dg2_edp_r432 = {
+ .clock = 432000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 19) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 312),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+ .mpllb_fracn2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 52428) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 4),
+ .mpllb_sscen =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 50961),
+ .mpllb_sscstep =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 65752),
+};
+
+static const struct intel_mpllb_state *dg2_edp_tables[] = {
+ &dg2_dp_rbr_100,
+ &dg2_edp_r216,
+ &dg2_edp_r243,
+ &dg2_dp_hbr1_100,
+ &dg2_edp_r324,
+ &dg2_edp_r432,
+ &dg2_dp_hbr2_100,
+ &dg2_dp_hbr3_100,
+ NULL,
+};
+
+int intel_mpllb_calc_state(struct intel_crtc_state *crtc_state,
+ struct intel_encoder *encoder)
+{
+ const struct intel_mpllb_state **tables;
+ int i;
+
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP)) {
+ tables = dg2_edp_tables;
+ } else if (intel_crtc_has_dp_encoder(crtc_state)) {
+ /*
+ * FIXME: Initially we're just enabling the "combo" outputs on
+ * port A-D. The MPLLB for those ports takes an input from the
+ * "Display Filter PLL" which always has an output frequency
+ * of 100 MHz, hence the use of the _100 tables below.
+ *
+ * Once we enable port TC1 it will either use the same 100 MHz
+ * "Display Filter PLL" (when strapped to support a native
+ * display connection) or different 38.4 MHz "Filter PLL" when
+ * strapped to support a USB connection, so we'll need to check
+ * that to determine which table to use.
+ */
+ if (0)
+ tables = dg2_dp_38_4_tables;
+ else
+ tables = dg2_dp_100_tables;
+ } else {
+ /* TODO: Add HDMI support */
+ MISSING_CASE(encoder->type);
+ return -EINVAL;
+ }
+
+ for (i = 0; tables[i]; i++) {
+ if (crtc_state->port_clock <= tables[i]->clock) {
+ crtc_state->mpllb_state = *tables[i];
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
+void intel_mpllb_enable(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ const struct intel_mpllb_state *pll_state = &crtc_state->mpllb_state;
+ enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+ i915_reg_t enable_reg = (phy <= PHY_D ?
+ DG2_PLL_ENABLE(phy) : MG_PLL_ENABLE(0));
+
+ /*
+ * 3. Software programs the following PLL registers for the desired
+ * frequency.
+ */
+ intel_de_write(dev_priv, SNPS_PHY_MPLLB_CP(phy), pll_state->mpllb_cp);
+ intel_de_write(dev_priv, SNPS_PHY_MPLLB_DIV(phy), pll_state->mpllb_div);
+ intel_de_write(dev_priv, SNPS_PHY_MPLLB_DIV2(phy), pll_state->mpllb_div2);
+ intel_de_write(dev_priv, SNPS_PHY_MPLLB_SSCEN(phy), pll_state->mpllb_sscen);
+ intel_de_write(dev_priv, SNPS_PHY_MPLLB_SSCSTEP(phy), pll_state->mpllb_sscstep);
+ intel_de_write(dev_priv, SNPS_PHY_MPLLB_FRACN1(phy), pll_state->mpllb_fracn1);
+ intel_de_write(dev_priv, SNPS_PHY_MPLLB_FRACN2(phy), pll_state->mpllb_fracn2);
+
+ /*
+ * 4. If the frequency will result in a change to the voltage
+ * requirement, follow the Display Voltage Frequency Switching -
+ * Sequence Before Frequency Change.
+ *
+ * We handle this step in bxt_set_cdclk().
+ */
+
+ /* 5. Software sets DPLL_ENABLE [PLL Enable] to "1". */
+ intel_uncore_rmw(&dev_priv->uncore, enable_reg, 0, PLL_ENABLE);
+
+ /*
+ * 9. Software sets SNPS_PHY_MPLLB_DIV dp_mpllb_force_en to "1". This
+ * will keep the PLL running during the DDI lane programming and any
+ * typeC DP cable disconnect. Do not set the force before enabling the
+ * PLL because that will start the PLL before it has sampled the
+ * divider values.
+ */
+ intel_de_write(dev_priv, SNPS_PHY_MPLLB_DIV(phy),
+ pll_state->mpllb_div | SNPS_PHY_MPLLB_FORCE_EN);
+
+ /*
+ * 10. Software polls on register DPLL_ENABLE [PLL Lock] to confirm PLL
+ * is locked at new settings. This register bit is sampling PHY
+ * dp_mpllb_state interface signal.
+ */
+ if (intel_de_wait_for_set(dev_priv, enable_reg, PLL_LOCK, 5))
+ DRM_ERROR("Port %c PLL not locked\n", phy_name(phy));
+
+ /*
+ * 11. If the frequency will result in a change to the voltage
+ * requirement, follow the Display Voltage Frequency Switching -
+ * Sequence After Frequency Change.
+ *
+ * We handle this step in bxt_set_cdclk().
+ */
+}
+
+void intel_mpllb_disable(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+ i915_reg_t enable_reg = (phy <= PHY_D ?
+ DG2_PLL_ENABLE(phy) : MG_PLL_ENABLE(0));
+
+ /*
+ * 1. If the frequency will result in a change to the voltage
+ * requirement, follow the Display Voltage Frequency Switching -
+ * Sequence Before Frequency Change.
+ *
+ * We handle this step in bxt_set_cdclk().
+ */
+
+ /* 2. Software programs DPLL_ENABLE [PLL Enable] to "0" */
+ intel_uncore_rmw(&dev_priv->uncore, enable_reg, PLL_ENABLE, 0);
+
+ /*
+ * 4. Software programs SNPS_PHY_MPLLB_DIV dp_mpllb_force_en to "0".
+ * This will allow the PLL to stop running.
+ */
+ intel_uncore_rmw(&dev_priv->uncore, SNPS_PHY_MPLLB_DIV(phy),
+ SNPS_PHY_MPLLB_FORCE_EN, 0);
+
+ /*
+ * 5. Software polls DPLL_ENABLE [PLL Lock] for PHY acknowledgment
+ * (dp_txX_ack) that the new transmitter setting request is completed.
+ */
+ if (intel_de_wait_for_clear(dev_priv, enable_reg, PLL_LOCK, 5))
+ DRM_ERROR("Port %c PLL not locked\n", phy_name(phy));
+
+ /*
+ * 6. If the frequency will result in a change to the voltage
+ * requirement, follow the Display Voltage Frequency Switching -
+ * Sequence After Frequency Change.
+ *
+ * We handle this step in bxt_set_cdclk().
+ */
+}
projects / linux.git / commitdiff