| // SPDX-License-Identifier: MIT |
| /* |
| * Copyright © 2019 Intel Corporation |
| */ |
| |
| #include <linux/util_macros.h> |
| |
| #include "intel_ddi.h" |
| #include "intel_ddi_buf_trans.h" |
| #include "intel_de.h" |
| #include "intel_display_types.h" |
| #include "intel_snps_phy.h" |
| #include "intel_snps_phy_regs.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. |
| */ |
| |
| void intel_snps_phy_wait_for_calibration(struct drm_i915_private *i915) |
| { |
| enum phy phy; |
| |
| for_each_phy_masked(phy, ~0) { |
| if (!intel_phy_is_snps(i915, phy)) |
| continue; |
| |
| /* |
| * If calibration does not complete successfully, we'll remember |
| * which phy was affected and skip setup of the corresponding |
| * output later. |
| */ |
| if (intel_de_wait_for_clear(i915, DG2_PHY_MISC(phy), |
| DG2_PHY_DP_TX_ACK_MASK, 25)) |
| i915->snps_phy_failed_calibration |= BIT(phy); |
| } |
| } |
| |
| void intel_snps_phy_update_psr_power_state(struct drm_i915_private *dev_priv, |
| enum phy phy, bool enable) |
| { |
| u32 val; |
| |
| if (!intel_phy_is_snps(dev_priv, phy)) |
| return; |
| |
| val = REG_FIELD_PREP(SNPS_PHY_TX_REQ_LN_DIS_PWR_STATE_PSR, |
| enable ? 2 : 3); |
| intel_uncore_rmw(&dev_priv->uncore, SNPS_PHY_TX_REQ(phy), |
| SNPS_PHY_TX_REQ_LN_DIS_PWR_STATE_PSR, val); |
| } |
| |
| void intel_snps_phy_set_signal_levels(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_ddi_buf_trans *trans; |
| enum phy phy = intel_port_to_phy(dev_priv, encoder->port); |
| int n_entries, ln; |
| |
| trans = encoder->get_buf_trans(encoder, crtc_state, &n_entries); |
| if (drm_WARN_ON_ONCE(&dev_priv->drm, !trans)) |
| return; |
| |
| for (ln = 0; ln < 4; ln++) { |
| int level = intel_ddi_level(encoder, crtc_state, ln); |
| u32 val = 0; |
| |
| val |= REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, trans->entries[level].snps.vswing); |
| val |= REG_FIELD_PREP(SNPS_PHY_TX_EQ_PRE, trans->entries[level].snps.pre_cursor); |
| val |= REG_FIELD_PREP(SNPS_PHY_TX_EQ_POST, trans->entries[level].snps.post_cursor); |
| |
| intel_de_write(dev_priv, SNPS_PHY_TX_EQ(ln, phy), val); |
| } |
| } |
| |
| /* |
| * 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_uhbr10_100 = { |
| .clock = 1000000, |
| .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, 21) | |
| 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_DIV_CLK_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_MULTIPLIER, 8) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_WORD_DIV2_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_DP2_MODE, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_SHIM_DIV32_CLK_SEL, 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, 368), |
| .mpllb_fracn1 = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1), |
| |
| /* |
| * SSC will be enabled, DP UHBR has a minimum SSC requirement. |
| */ |
| .mpllb_sscen = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 58982), |
| .mpllb_sscstep = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 76101), |
| }; |
| |
| static const struct intel_mpllb_state dg2_dp_uhbr13_100 = { |
| .clock = 1350000, |
| .ref_control = |
| REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3), |
| .mpllb_cp = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 5) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 45) | |
| 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_DIV_CLK_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_MULTIPLIER, 8) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_WORD_DIV2_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_DP2_MODE, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 3), |
| .mpllb_div2 = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 508), |
| .mpllb_fracn1 = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1), |
| |
| /* |
| * SSC will be enabled, DP UHBR has a minimum SSC requirement. |
| */ |
| .mpllb_sscen = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 79626), |
| .mpllb_sscstep = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 102737), |
| }; |
| |
| static const struct intel_mpllb_state * const dg2_dp_100_tables[] = { |
| &dg2_dp_rbr_100, |
| &dg2_dp_hbr1_100, |
| &dg2_dp_hbr2_100, |
| &dg2_dp_hbr3_100, |
| &dg2_dp_uhbr10_100, |
| &dg2_dp_uhbr13_100, |
| 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 * const 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, |
| }; |
| |
| /* |
| * HDMI link rates with 100 MHz reference clock. |
| */ |
| |
| static const struct intel_mpllb_state dg2_hdmi_25_175 = { |
| .clock = 25175, |
| .ref_control = |
| REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3), |
| .mpllb_cp = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 5) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 15) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124), |
| .mpllb_div = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 5) | |
| 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, 128) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1), |
| .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, 143), |
| .mpllb_fracn2 = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 36663) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 71), |
| .mpllb_sscen = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1), |
| }; |
| |
| static const struct intel_mpllb_state dg2_hdmi_27_0 = { |
| .clock = 27000, |
| .ref_control = |
| REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3), |
| .mpllb_cp = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 5) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 15) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124), |
| .mpllb_div = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 5) | |
| 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, 140) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1), |
| .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_UP_SPREAD, 1), |
| }; |
| |
| static const struct intel_mpllb_state dg2_hdmi_74_25 = { |
| .clock = 74250, |
| .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, 15) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124), |
| .mpllb_div = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) | |
| 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, 86) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1), |
| .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_UP_SPREAD, 1), |
| }; |
| |
| static const struct intel_mpllb_state dg2_hdmi_148_5 = { |
| .clock = 148500, |
| .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, 15) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124), |
| .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, 3), |
| .mpllb_div2 = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 86) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1), |
| .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_UP_SPREAD, 1), |
| }; |
| |
| /* values in the below table are calculted using the algo */ |
| static const struct intel_mpllb_state dg2_hdmi_297 = { |
| .clock = 297000, |
| .ref_control = |
| REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3), |
| .mpllb_cp = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124), |
| .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, 86) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1), |
| .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, 65535), |
| .mpllb_fracn2 = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 26214), |
| .mpllb_sscen = |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1), |
| }; |
| |
| static const struct intel_mpllb_state dg2_hdmi_594 = { |
| .clock = 594000, |
| .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, 15) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124), |
| .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, 86) | |
| REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1), |
| .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_UP_SPREAD, 1), |
| }; |
| |
| static const struct intel_mpllb_state * const dg2_hdmi_tables[] = { |
| &dg2_hdmi_25_175, |
| &dg2_hdmi_27_0, |
| &dg2_hdmi_74_25, |
| &dg2_hdmi_148_5, |
| &dg2_hdmi_297, |
| &dg2_hdmi_594, |
| NULL, |
| }; |
| |
| static const struct intel_mpllb_state * const * |
| intel_mpllb_tables_get(struct intel_crtc_state *crtc_state, |
| struct intel_encoder *encoder) |
| { |
| if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP)) { |
| return dg2_edp_tables; |
| } else if (intel_crtc_has_dp_encoder(crtc_state)) { |
| return dg2_dp_100_tables; |
| } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) { |
| return dg2_hdmi_tables; |
| } |
| |
| MISSING_CASE(encoder->type); |
| return NULL; |
| } |
| |
| int intel_mpllb_calc_state(struct intel_crtc_state *crtc_state, |
| struct intel_encoder *encoder) |
| { |
| struct drm_i915_private *i915 = to_i915(encoder->base.dev); |
| const struct intel_mpllb_state * const *tables; |
| int i; |
| |
| if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) { |
| if (intel_snps_phy_check_hdmi_link_rate(crtc_state->port_clock) |
| != MODE_OK) { |
| /* |
| * FIXME: Can only support fixed HDMI frequencies |
| * until we have a proper algorithm under a valid |
| * license. |
| */ |
| drm_dbg_kms(&i915->drm, "Can't support HDMI link rate %d\n", |
| crtc_state->port_clock); |
| return -EINVAL; |
| } |
| } |
| |
| tables = intel_mpllb_tables_get(crtc_state, encoder); |
| if (!tables) |
| 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_dbg_kms(&dev_priv->drm, "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 *i915 = to_i915(encoder->base.dev); |
| enum phy phy = intel_port_to_phy(i915, 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(&i915->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(&i915->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(i915, enable_reg, PLL_LOCK, 5)) |
| drm_err(&i915->drm, "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(). |
| */ |
| } |
| |
| int intel_mpllb_calc_port_clock(struct intel_encoder *encoder, |
| const struct intel_mpllb_state *pll_state) |
| { |
| unsigned int frac_quot = 0, frac_rem = 0, frac_den = 1; |
| unsigned int multiplier, tx_clk_div, refclk; |
| bool frac_en; |
| |
| if (0) |
| refclk = 38400; |
| else |
| refclk = 100000; |
| |
| refclk >>= REG_FIELD_GET(SNPS_PHY_MPLLB_REF_CLK_DIV, pll_state->mpllb_div2) - 1; |
| |
| frac_en = REG_FIELD_GET(SNPS_PHY_MPLLB_FRACN_EN, pll_state->mpllb_fracn1); |
| |
| if (frac_en) { |
| frac_quot = REG_FIELD_GET(SNPS_PHY_MPLLB_FRACN_QUOT, pll_state->mpllb_fracn2); |
| frac_rem = REG_FIELD_GET(SNPS_PHY_MPLLB_FRACN_REM, pll_state->mpllb_fracn2); |
| frac_den = REG_FIELD_GET(SNPS_PHY_MPLLB_FRACN_DEN, pll_state->mpllb_fracn1); |
| } |
| |
| multiplier = REG_FIELD_GET(SNPS_PHY_MPLLB_MULTIPLIER, pll_state->mpllb_div2) / 2 + 16; |
| |
| tx_clk_div = REG_FIELD_GET(SNPS_PHY_MPLLB_TX_CLK_DIV, pll_state->mpllb_div); |
| |
| return DIV_ROUND_CLOSEST_ULL(mul_u32_u32(refclk, (multiplier << 16) + frac_quot) + |
| DIV_ROUND_CLOSEST(refclk * frac_rem, frac_den), |
| 10 << (tx_clk_div + 16)); |
| } |
| |
| void intel_mpllb_readout_hw_state(struct intel_encoder *encoder, |
| struct intel_mpllb_state *pll_state) |
| { |
| struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); |
| enum phy phy = intel_port_to_phy(dev_priv, encoder->port); |
| |
| pll_state->mpllb_cp = intel_de_read(dev_priv, SNPS_PHY_MPLLB_CP(phy)); |
| pll_state->mpllb_div = intel_de_read(dev_priv, SNPS_PHY_MPLLB_DIV(phy)); |
| pll_state->mpllb_div2 = intel_de_read(dev_priv, SNPS_PHY_MPLLB_DIV2(phy)); |
| pll_state->mpllb_sscen = intel_de_read(dev_priv, SNPS_PHY_MPLLB_SSCEN(phy)); |
| pll_state->mpllb_sscstep = intel_de_read(dev_priv, SNPS_PHY_MPLLB_SSCSTEP(phy)); |
| pll_state->mpllb_fracn1 = intel_de_read(dev_priv, SNPS_PHY_MPLLB_FRACN1(phy)); |
| pll_state->mpllb_fracn2 = intel_de_read(dev_priv, SNPS_PHY_MPLLB_FRACN2(phy)); |
| |
| /* |
| * REF_CONTROL is under firmware control and never programmed by the |
| * driver; we read it only for sanity checking purposes. The bspec |
| * only tells us the expected value for one field in this register, |
| * so we'll only read out those specific bits here. |
| */ |
| pll_state->ref_control = intel_de_read(dev_priv, SNPS_PHY_REF_CONTROL(phy)) & |
| SNPS_PHY_REF_CONTROL_REF_RANGE; |
| |
| /* |
| * MPLLB_DIV is programmed twice, once with the software-computed |
| * state, then again with the MPLLB_FORCE_EN bit added. Drop that |
| * extra bit during readout so that we return the actual expected |
| * software state. |
| */ |
| pll_state->mpllb_div &= ~SNPS_PHY_MPLLB_FORCE_EN; |
| } |
| |
| int intel_snps_phy_check_hdmi_link_rate(int clock) |
| { |
| const struct intel_mpllb_state * const *tables = dg2_hdmi_tables; |
| int i; |
| |
| for (i = 0; tables[i]; i++) { |
| if (clock == tables[i]->clock) |
| return MODE_OK; |
| } |
| |
| return MODE_CLOCK_RANGE; |
| } |
| |
| void intel_mpllb_state_verify(struct intel_atomic_state *state, |
| struct intel_crtc_state *new_crtc_state) |
| { |
| struct drm_i915_private *i915 = to_i915(state->base.dev); |
| struct intel_mpllb_state mpllb_hw_state = { 0 }; |
| struct intel_mpllb_state *mpllb_sw_state = &new_crtc_state->mpllb_state; |
| struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc); |
| struct intel_encoder *encoder; |
| |
| if (!IS_DG2(i915)) |
| return; |
| |
| if (!new_crtc_state->hw.active) |
| return; |
| |
| encoder = intel_get_crtc_new_encoder(state, new_crtc_state); |
| intel_mpllb_readout_hw_state(encoder, &mpllb_hw_state); |
| |
| #define MPLLB_CHECK(__name) \ |
| I915_STATE_WARN(mpllb_sw_state->__name != mpllb_hw_state.__name, \ |
| "[CRTC:%d:%s] mismatch in MPLLB: %s (expected 0x%08x, found 0x%08x)", \ |
| crtc->base.base.id, crtc->base.name, \ |
| __stringify(__name), \ |
| mpllb_sw_state->__name, mpllb_hw_state.__name) |
| |
| MPLLB_CHECK(mpllb_cp); |
| MPLLB_CHECK(mpllb_div); |
| MPLLB_CHECK(mpllb_div2); |
| MPLLB_CHECK(mpllb_fracn1); |
| MPLLB_CHECK(mpllb_fracn2); |
| MPLLB_CHECK(mpllb_sscen); |
| MPLLB_CHECK(mpllb_sscstep); |
| |
| /* |
| * ref_control is handled by the hardware/firemware and never |
| * programmed by the software, but the proper values are supplied |
| * in the bspec for verification purposes. |
| */ |
| MPLLB_CHECK(ref_control); |
| |
| #undef MPLLB_CHECK |
| } |
