diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_ddi.c | 344 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 5 |
3 files changed, 345 insertions, 12 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h index 9cfa7f508c90..fe2e3edef69b 100644 --- a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h @@ -59,8 +59,16 @@ _XELPDP_PORT_BUF_CTL1_LN0_B, \ _XELPDP_PORT_BUF_CTL1_LN0_USBC1, \ _XELPDP_PORT_BUF_CTL1_LN0_USBC2)) +#define XELPDP_PORT_BUF_D2D_LINK_ENABLE REG_BIT(29) +#define XELPDP_PORT_BUF_D2D_LINK_STATE REG_BIT(28) #define XELPDP_PORT_BUF_SOC_PHY_READY REG_BIT(24) +#define XELPDP_PORT_BUF_PORT_DATA_WIDTH_MASK REG_GENMASK(19, 18) +#define XELPDP_PORT_BUF_PORT_DATA_10BIT REG_FIELD_PREP(XELPDP_PORT_BUF_PORT_DATA_WIDTH_MASK, 0) +#define XELPDP_PORT_BUF_PORT_DATA_20BIT REG_FIELD_PREP(XELPDP_PORT_BUF_PORT_DATA_WIDTH_MASK, 1) +#define XELPDP_PORT_BUF_PORT_DATA_40BIT REG_FIELD_PREP(XELPDP_PORT_BUF_PORT_DATA_WIDTH_MASK, 2) #define XELPDP_PORT_REVERSAL REG_BIT(16) +#define XELPDP_PORT_BUF_IO_SELECT_TBT REG_BIT(11) +#define XELPDP_PORT_BUF_PHY_IDLE REG_BIT(7) #define XELPDP_TC_PHY_OWNERSHIP REG_BIT(6) #define XELPDP_TCSS_POWER_REQUEST REG_BIT(5) #define XELPDP_TCSS_POWER_STATE REG_BIT(4) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 0a057624ae7c..842095ae3e0b 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -40,6 +40,7 @@ #include "intel_connector.h" #include "intel_crtc.h" #include "intel_cx0_phy.h" +#include "intel_cx0_phy_regs.h" #include "intel_ddi.h" #include "intel_ddi_buf_trans.h" #include "intel_de.h" @@ -169,6 +170,18 @@ static void hsw_prepare_hdmi_ddi_buffers(struct intel_encoder *encoder, trans->entries[level].hsw.trans2); } +static void mtl_wait_ddi_buf_idle(struct drm_i915_private *i915, enum port port) +{ + int ret; + + /* FIXME: find out why Bspec's 100us timeout is too short */ + ret = wait_for_us((intel_de_read(i915, XELPDP_PORT_BUF_CTL1(port)) & + XELPDP_PORT_BUF_PHY_IDLE), 10000); + if (ret) + drm_err(&i915->drm, "Timeout waiting for DDI BUF %c to get idle\n", + port_name(port)); +} + void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv, enum port port) { @@ -196,7 +209,9 @@ static void intel_wait_ddi_buf_active(struct drm_i915_private *dev_priv, return; } - if (IS_DG2(dev_priv)) { + if (DISPLAY_VER(dev_priv) >= 14) { + timeout_us = 10000; + } else if (IS_DG2(dev_priv)) { timeout_us = 1200; } else if (DISPLAY_VER(dev_priv) >= 12) { if (intel_phy_is_tc(dev_priv, phy)) @@ -207,8 +222,12 @@ static void intel_wait_ddi_buf_active(struct drm_i915_private *dev_priv, timeout_us = 500; } - ret = _wait_for(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) & - DDI_BUF_IS_IDLE), timeout_us, 10, 10); + if (DISPLAY_VER(dev_priv) >= 14) + ret = _wait_for(!(intel_de_read(dev_priv, XELPDP_PORT_BUF_CTL1(port)) & XELPDP_PORT_BUF_PHY_IDLE), + timeout_us, 10, 10); + else + ret = _wait_for(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) & DDI_BUF_IS_IDLE), + timeout_us, 10, 10); if (ret) drm_err(&dev_priv->drm, "Timeout waiting for DDI BUF %c to get active\n", @@ -313,6 +332,13 @@ static void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder, DDI_PORT_WIDTH(crtc_state->lane_count) | DDI_BUF_TRANS_SELECT(0); + if (DISPLAY_VER(i915) >= 14) { + if (intel_dp_is_uhbr(crtc_state)) + intel_dp->DP |= DDI_BUF_PORT_DATA_40BIT; + else + intel_dp->DP |= DDI_BUF_PORT_DATA_10BIT; + } + if (IS_ALDERLAKE_P(i915) && intel_phy_is_tc(i915, phy)) { intel_dp->DP |= ddi_buf_phy_link_rate(crtc_state->port_clock); if (!intel_tc_port_in_tbt_alt_mode(dig_port)) @@ -2309,6 +2335,179 @@ static void intel_ddi_mso_configure(const struct intel_crtc_state *crtc_state) OVERLAP_PIXELS_MASK, dss1); } +static u8 mtl_get_port_width(u8 lane_count) +{ + switch (lane_count) { + case 1: + return 0; + case 2: + return 1; + case 3: + return 4; + case 4: + return 3; + default: + MISSING_CASE(lane_count); + return 4; + } +} + +static void +mtl_ddi_enable_d2d(struct intel_encoder *encoder) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + enum port port = encoder->port; + + intel_de_rmw(dev_priv, XELPDP_PORT_BUF_CTL1(port), 0, + XELPDP_PORT_BUF_D2D_LINK_ENABLE); + + if (wait_for_us((intel_de_read(dev_priv, XELPDP_PORT_BUF_CTL1(port)) & + XELPDP_PORT_BUF_D2D_LINK_STATE), 100)) { + drm_err(&dev_priv->drm, "Timeout waiting for D2D Link enable for PORT_BUF_CTL %c\n", + port_name(port)); + } +} + +static void mtl_port_buf_ctl_program(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state) +{ + struct drm_i915_private *i915 = to_i915(encoder->base.dev); + struct intel_digital_port *dig_port = enc_to_dig_port(encoder); + enum port port = encoder->port; + u32 val; + + val = intel_de_read(i915, XELPDP_PORT_BUF_CTL1(port)); + val &= ~XELPDP_PORT_WIDTH_MASK; + val |= XELPDP_PORT_WIDTH(mtl_get_port_width(crtc_state->lane_count)); + + val &= ~XELPDP_PORT_BUF_PORT_DATA_WIDTH_MASK; + if (intel_dp_is_uhbr(crtc_state)) + val |= XELPDP_PORT_BUF_PORT_DATA_40BIT; + else + val |= XELPDP_PORT_BUF_PORT_DATA_10BIT; + + if (dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL) + val |= XELPDP_PORT_REVERSAL; + + intel_de_write(i915, XELPDP_PORT_BUF_CTL1(port), val); +} + +static void mtl_port_buf_ctl_io_selection(struct intel_encoder *encoder) +{ + struct drm_i915_private *i915 = to_i915(encoder->base.dev); + struct intel_digital_port *dig_port = enc_to_dig_port(encoder); + u32 val; + + val = intel_tc_port_in_tbt_alt_mode(dig_port) ? + XELPDP_PORT_BUF_IO_SELECT_TBT : 0; + intel_de_rmw(i915, XELPDP_PORT_BUF_CTL1(encoder->port), + XELPDP_PORT_BUF_IO_SELECT_TBT, val); +} + +static void mtl_ddi_pre_enable_dp(struct intel_atomic_state *state, + struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state, + const struct drm_connector_state *conn_state) +{ + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + bool is_mst = intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST); + + intel_dp_set_link_params(intel_dp, + crtc_state->port_clock, + crtc_state->lane_count); + + /* + * We only configure what the register value will be here. Actual + * enabling happens during link training farther down. + */ + intel_ddi_init_dp_buf_reg(encoder, crtc_state); + + /* + * 1. Enable Power Wells + * + * This was handled at the beginning of intel_atomic_commit_tail(), + * before we called down into this function. + */ + + /* 2. PMdemand was already set */ + + /* 3. Select Thunderbolt */ + mtl_port_buf_ctl_io_selection(encoder); + + /* 4. Enable Panel Power if PPS is required */ + intel_pps_on(intel_dp); + + /* 5. Enable the port PLL */ + intel_ddi_enable_clock(encoder, crtc_state); + + /* + * 6.a Configure Transcoder Clock Select to direct the Port clock to the + * Transcoder. + */ + intel_ddi_enable_transcoder_clock(encoder, crtc_state); + + /* + * 6.b If DP v2.0/128b mode - Configure TRANS_DP2_CTL register settings. + */ + intel_ddi_config_transcoder_dp2(encoder, crtc_state); + + /* + * 6.c Configure TRANS_DDI_FUNC_CTL DDI Select, DDI Mode Select & MST + * Transport Select + */ + intel_ddi_config_transcoder_func(encoder, crtc_state); + + /* + * 6.e Program CoG/MSO configuration bits in DSS_CTL1 if selected. + */ + intel_ddi_mso_configure(crtc_state); + + if (!is_mst) + intel_dp_set_power(intel_dp, DP_SET_POWER_D0); + + intel_dp_configure_protocol_converter(intel_dp, crtc_state); + intel_dp_sink_set_decompression_state(intel_dp, crtc_state, true); + /* + * DDI FEC: "anticipates enabling FEC encoding sets the FEC_READY bit + * in the FEC_CONFIGURATION register to 1 before initiating link + * training + */ + intel_dp_sink_set_fec_ready(intel_dp, crtc_state); + + intel_dp_check_frl_training(intel_dp); + intel_dp_pcon_dsc_configure(intel_dp, crtc_state); + + /* + * 6. The rest of the below are substeps under the bspec's "Enable and + * Train Display Port" step. Note that steps that are specific to + * MST will be handled by intel_mst_pre_enable_dp() before/after it + * calls into this function. Also intel_mst_pre_enable_dp() only calls + * us when active_mst_links==0, so any steps designated for "single + * stream or multi-stream master transcoder" can just be performed + * unconditionally here. + * + * mtl_ddi_prepare_link_retrain() that is called by + * intel_dp_start_link_train() will execute steps: 6.d, 6.f, 6.g, 6.h, + * 6.i and 6.j + * + * 6.k Follow DisplayPort specification training sequence (see notes for + * failure handling) + * 6.m If DisplayPort multi-stream - Set DP_TP_CTL link training to Idle + * Pattern, wait for 5 idle patterns (DP_TP_STATUS Min_Idles_Sent) + * (timeout after 800 us) + */ + intel_dp_start_link_train(intel_dp, crtc_state); + + /* 6.n Set DP_TP_CTL link training to Normal */ + if (!is_trans_port_sync_mode(crtc_state)) + intel_dp_stop_link_train(intel_dp, crtc_state); + + /* 6.o Configure and enable FEC if needed */ + intel_ddi_enable_fec(encoder, crtc_state); + + intel_dsc_dp_pps_write(encoder, crtc_state); +} + static void tgl_ddi_pre_enable_dp(struct intel_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, @@ -2523,7 +2722,9 @@ static void intel_ddi_pre_enable_dp(struct intel_atomic_state *state, intel_dp_128b132b_sdp_crc16(enc_to_intel_dp(encoder), crtc_state); - if (DISPLAY_VER(dev_priv) >= 12) + if (DISPLAY_VER(dev_priv) >= 14) + mtl_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state); + else if (DISPLAY_VER(dev_priv) >= 12) tgl_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state); else hsw_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state); @@ -2604,8 +2805,50 @@ static void intel_ddi_pre_enable(struct intel_atomic_state *state, } } -static void intel_disable_ddi_buf(struct intel_encoder *encoder, - const struct intel_crtc_state *crtc_state) +static void +mtl_ddi_disable_d2d_link(struct intel_encoder *encoder) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + enum port port = encoder->port; + + intel_de_rmw(dev_priv, XELPDP_PORT_BUF_CTL1(port), + XELPDP_PORT_BUF_D2D_LINK_ENABLE, 0); + + if (wait_for_us(!(intel_de_read(dev_priv, XELPDP_PORT_BUF_CTL1(port)) & + XELPDP_PORT_BUF_D2D_LINK_STATE), 100)) + drm_err(&dev_priv->drm, "Timeout waiting for D2D Link disable for PORT_BUF_CTL %c\n", + port_name(port)); +} + +static void mtl_disable_ddi_buf(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + enum port port = encoder->port; + u32 val; + + /* 3.b Clear DDI_CTL_DE Enable to 0. */ + val = intel_de_read(dev_priv, DDI_BUF_CTL(port)); + if (val & DDI_BUF_CTL_ENABLE) { + val &= ~DDI_BUF_CTL_ENABLE; + intel_de_write(dev_priv, DDI_BUF_CTL(port), val); + + /* 3.c Poll for PORT_BUF_CTL Idle Status == 1, timeout after 100us */ + mtl_wait_ddi_buf_idle(dev_priv, port); + } + + /* 3.d Disable D2D Link */ + mtl_ddi_disable_d2d_link(encoder); + + /* 3.e Disable DP_TP_CTL */ + if (intel_crtc_has_dp_encoder(crtc_state)) { + intel_de_rmw(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), + DP_TP_CTL_ENABLE, 0); + } +} + +static void disable_ddi_buf(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state) { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); enum port port = encoder->port; @@ -2630,6 +2873,21 @@ static void intel_disable_ddi_buf(struct intel_encoder *encoder, intel_wait_ddi_buf_idle(dev_priv, port); } +static void intel_disable_ddi_buf(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + + if (DISPLAY_VER(dev_priv) >= 14) { + mtl_disable_ddi_buf(encoder, crtc_state); + + /* 3.f Disable DP_TP_CTL FEC Enable if it is needed */ + intel_ddi_disable_fec_state(encoder, crtc_state); + } else { + disable_ddi_buf(encoder, crtc_state); + } +} + static void intel_ddi_post_disable_dp(struct intel_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, @@ -2638,6 +2896,7 @@ static void intel_ddi_post_disable_dp(struct intel_atomic_state *state, struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct intel_digital_port *dig_port = enc_to_dig_port(encoder); struct intel_dp *intel_dp = &dig_port->dp; + intel_wakeref_t wakeref; bool is_mst = intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DP_MST); @@ -2677,12 +2936,19 @@ static void intel_ddi_post_disable_dp(struct intel_atomic_state *state, intel_pps_vdd_on(intel_dp); intel_pps_off(intel_dp); - if (!intel_tc_port_in_tbt_alt_mode(dig_port)) + wakeref = fetch_and_zero(&dig_port->ddi_io_wakeref); + + if (wakeref) intel_display_power_put(dev_priv, dig_port->ddi_io_power_domain, - fetch_and_zero(&dig_port->ddi_io_wakeref)); + wakeref); intel_ddi_disable_clock(encoder); + + /* De-select Thunderbolt */ + if (DISPLAY_VER(dev_priv) >= 14) + intel_de_rmw(dev_priv, XELPDP_PORT_BUF_CTL1(encoder->port), + XELPDP_PORT_BUF_IO_SELECT_TBT, 0); } static void intel_ddi_post_disable_hdmi(struct intel_atomic_state *state, @@ -2693,6 +2959,7 @@ static void intel_ddi_post_disable_hdmi(struct intel_atomic_state *state, struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct intel_digital_port *dig_port = enc_to_dig_port(encoder); struct intel_hdmi *intel_hdmi = &dig_port->hdmi; + intel_wakeref_t wakeref; dig_port->set_infoframes(encoder, false, old_crtc_state, old_conn_state); @@ -2705,9 +2972,11 @@ static void intel_ddi_post_disable_hdmi(struct intel_atomic_state *state, if (DISPLAY_VER(dev_priv) >= 12) intel_ddi_disable_transcoder_clock(old_crtc_state); - intel_display_power_put(dev_priv, - dig_port->ddi_io_power_domain, - fetch_and_zero(&dig_port->ddi_io_wakeref)); + wakeref = fetch_and_zero(&dig_port->ddi_io_wakeref); + if (wakeref) + intel_display_power_put(dev_priv, + dig_port->ddi_io_power_domain, + wakeref); intel_ddi_disable_clock(encoder); @@ -3104,6 +3373,53 @@ static void adlp_tbt_to_dp_alt_switch_wa(struct intel_encoder *encoder) intel_dkl_phy_rmw(i915, DKL_PCS_DW5(tc_port, ln), DKL_PCS_DW5_CORE_SOFTRESET, 0); } +static void mtl_ddi_prepare_link_retrain(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state) +{ + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); + struct intel_encoder *encoder = &dig_port->base; + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + enum port port = encoder->port; + u32 dp_tp_ctl; + + /* + * TODO: To train with only a different voltage swing entry is not + * necessary disable and enable port + */ + dp_tp_ctl = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state)); + if (dp_tp_ctl & DP_TP_CTL_ENABLE) + mtl_disable_ddi_buf(encoder, crtc_state); + + /* 6.d Configure and enable DP_TP_CTL with link training pattern 1 selected */ + dp_tp_ctl = DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_PAT1; + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) { + dp_tp_ctl |= DP_TP_CTL_MODE_MST; + } else { + dp_tp_ctl |= DP_TP_CTL_MODE_SST; + if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) + dp_tp_ctl |= DP_TP_CTL_ENHANCED_FRAME_ENABLE; + } + intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), dp_tp_ctl); + intel_de_posting_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state)); + + /* 6.f Enable D2D Link */ + mtl_ddi_enable_d2d(encoder); + + /* 6.g Configure voltage swing and related IO settings */ + encoder->set_signal_levels(encoder, crtc_state); + + /* 6.h Configure PORT_BUF_CTL1 */ + mtl_port_buf_ctl_program(encoder, crtc_state); + + /* 6.i Configure and enable DDI_CTL_DE to start sending valid data to port slice */ + intel_dp->DP |= DDI_BUF_CTL_ENABLE; + intel_de_write(dev_priv, DDI_BUF_CTL(port), intel_dp->DP); + intel_de_posting_read(dev_priv, DDI_BUF_CTL(port)); + + /* 6.j Poll for PORT_BUF_CTL Idle Status == 0, timeout after 100 us */ + intel_wait_ddi_buf_active(dev_priv, port); +} + static void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state) { @@ -3871,6 +4187,7 @@ static const struct drm_encoder_funcs intel_ddi_funcs = { static struct intel_connector * intel_ddi_init_dp_connector(struct intel_digital_port *dig_port) { + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); struct intel_connector *connector; enum port port = dig_port->base.port; @@ -3879,7 +4196,10 @@ intel_ddi_init_dp_connector(struct intel_digital_port *dig_port) return NULL; dig_port->dp.output_reg = DDI_BUF_CTL(port); - dig_port->dp.prepare_link_retrain = intel_ddi_prepare_link_retrain; + if (DISPLAY_VER(i915) >= 14) + dig_port->dp.prepare_link_retrain = mtl_ddi_prepare_link_retrain; + else + dig_port->dp.prepare_link_retrain = intel_ddi_prepare_link_retrain; dig_port->dp.set_link_train = intel_ddi_set_link_train; dig_port->dp.set_idle_link_train = intel_ddi_set_idle_link_train; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index de95e81007c2..33bc06011235 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -5645,11 +5645,16 @@ enum skl_power_gate { /* DDI Buffer Control */ #define _DDI_BUF_CTL_A 0x64000 #define _DDI_BUF_CTL_B 0x64100 +/* Known as DDI_CTL_DE in MTL+ */ #define DDI_BUF_CTL(port) _MMIO_PORT(port, _DDI_BUF_CTL_A, _DDI_BUF_CTL_B) #define DDI_BUF_CTL_ENABLE (1 << 31) #define DDI_BUF_TRANS_SELECT(n) ((n) << 24) #define DDI_BUF_EMP_MASK (0xf << 24) #define DDI_BUF_PHY_LINK_RATE(r) ((r) << 20) +#define DDI_BUF_PORT_DATA_MASK REG_GENMASK(19, 18) +#define DDI_BUF_PORT_DATA_10BIT REG_FIELD_PREP(DDI_BUF_PORT_DATA_MASK, 0) +#define DDI_BUF_PORT_DATA_20BIT REG_FIELD_PREP(DDI_BUF_PORT_DATA_MASK, 1) +#define DDI_BUF_PORT_DATA_40BIT REG_FIELD_PREP(DDI_BUF_PORT_DATA_MASK, 2) #define DDI_BUF_PORT_REVERSAL (1 << 16) #define DDI_BUF_IS_IDLE (1 << 7) #define DDI_BUF_CTL_TC_PHY_OWNERSHIP REG_BIT(6) |