diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 541 |
1 files changed, 467 insertions, 74 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 1193202766a2..3fae4dab295f 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -107,13 +107,6 @@ bool intel_dp_is_edp(struct intel_dp *intel_dp) return intel_dig_port->base.type == INTEL_OUTPUT_EDP; } -static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) -{ - struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); - - return intel_dig_port->base.base.dev; -} - static struct intel_dp *intel_attached_dp(struct drm_connector *connector) { return enc_to_intel_dp(&intel_attached_encoder(connector)->base); @@ -176,14 +169,45 @@ static int intel_dp_max_common_rate(struct intel_dp *intel_dp) return intel_dp->common_rates[intel_dp->num_common_rates - 1]; } +static int intel_dp_get_fia_supported_lane_count(struct intel_dp *intel_dp) +{ + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); + struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); + enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port); + u32 lane_info; + + if (tc_port == PORT_TC_NONE || dig_port->tc_type != TC_PORT_TYPEC) + return 4; + + lane_info = (I915_READ(PORT_TX_DFLEXDPSP) & + DP_LANE_ASSIGNMENT_MASK(tc_port)) >> + DP_LANE_ASSIGNMENT_SHIFT(tc_port); + + switch (lane_info) { + default: + MISSING_CASE(lane_info); + case 1: + case 2: + case 4: + case 8: + return 1; + case 3: + case 12: + return 2; + case 15: + return 4; + } +} + /* Theoretical max between source and sink */ static int intel_dp_max_common_lane_count(struct intel_dp *intel_dp) { struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); int source_max = intel_dig_port->max_lanes; int sink_max = drm_dp_max_lane_count(intel_dp->dpcd); + int fia_max = intel_dp_get_fia_supported_lane_count(intel_dp); - return min(source_max, sink_max); + return min3(source_max, sink_max, fia_max); } int intel_dp_max_lane_count(struct intel_dp *intel_dp) @@ -198,6 +222,138 @@ intel_dp_link_required(int pixel_clock, int bpp) return DIV_ROUND_UP(pixel_clock * bpp, 8); } +void icl_program_mg_dp_mode(struct intel_dp *intel_dp) +{ + struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); + enum port port = intel_dig_port->base.port; + enum tc_port tc_port = intel_port_to_tc(dev_priv, port); + u32 ln0, ln1, lane_info; + + if (tc_port == PORT_TC_NONE || intel_dig_port->tc_type == TC_PORT_TBT) + return; + + ln0 = I915_READ(MG_DP_MODE(port, 0)); + ln1 = I915_READ(MG_DP_MODE(port, 1)); + + switch (intel_dig_port->tc_type) { + case TC_PORT_TYPEC: + ln0 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE); + ln1 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE); + + lane_info = (I915_READ(PORT_TX_DFLEXDPSP) & + DP_LANE_ASSIGNMENT_MASK(tc_port)) >> + DP_LANE_ASSIGNMENT_SHIFT(tc_port); + + switch (lane_info) { + case 0x1: + case 0x4: + break; + case 0x2: + ln0 |= MG_DP_MODE_CFG_DP_X1_MODE; + break; + case 0x3: + ln0 |= MG_DP_MODE_CFG_DP_X1_MODE | + MG_DP_MODE_CFG_DP_X2_MODE; + break; + case 0x8: + ln1 |= MG_DP_MODE_CFG_DP_X1_MODE; + break; + case 0xC: + ln1 |= MG_DP_MODE_CFG_DP_X1_MODE | + MG_DP_MODE_CFG_DP_X2_MODE; + break; + case 0xF: + ln0 |= MG_DP_MODE_CFG_DP_X1_MODE | + MG_DP_MODE_CFG_DP_X2_MODE; + ln1 |= MG_DP_MODE_CFG_DP_X1_MODE | + MG_DP_MODE_CFG_DP_X2_MODE; + break; + default: + MISSING_CASE(lane_info); + } + break; + + case TC_PORT_LEGACY: + ln0 |= MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE; + ln1 |= MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE; + break; + + default: + MISSING_CASE(intel_dig_port->tc_type); + return; + } + + I915_WRITE(MG_DP_MODE(port, 0), ln0); + I915_WRITE(MG_DP_MODE(port, 1), ln1); +} + +void icl_enable_phy_clock_gating(struct intel_digital_port *dig_port) +{ + struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); + enum port port = dig_port->base.port; + enum tc_port tc_port = intel_port_to_tc(dev_priv, port); + i915_reg_t mg_regs[2] = { MG_DP_MODE(port, 0), MG_DP_MODE(port, 1) }; + u32 val; + int i; + + if (tc_port == PORT_TC_NONE) + return; + + for (i = 0; i < ARRAY_SIZE(mg_regs); i++) { + val = I915_READ(mg_regs[i]); + val |= MG_DP_MODE_CFG_TR2PWR_GATING | + MG_DP_MODE_CFG_TRPWR_GATING | + MG_DP_MODE_CFG_CLNPWR_GATING | + MG_DP_MODE_CFG_DIGPWR_GATING | + MG_DP_MODE_CFG_GAONPWR_GATING; + I915_WRITE(mg_regs[i], val); + } + + val = I915_READ(MG_MISC_SUS0(tc_port)); + val |= MG_MISC_SUS0_SUSCLK_DYNCLKGATE_MODE(3) | + MG_MISC_SUS0_CFG_TR2PWR_GATING | + MG_MISC_SUS0_CFG_CL2PWR_GATING | + MG_MISC_SUS0_CFG_GAONPWR_GATING | + MG_MISC_SUS0_CFG_TRPWR_GATING | + MG_MISC_SUS0_CFG_CL1PWR_GATING | + MG_MISC_SUS0_CFG_DGPWR_GATING; + I915_WRITE(MG_MISC_SUS0(tc_port), val); +} + +void icl_disable_phy_clock_gating(struct intel_digital_port *dig_port) +{ + struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); + enum port port = dig_port->base.port; + enum tc_port tc_port = intel_port_to_tc(dev_priv, port); + i915_reg_t mg_regs[2] = { MG_DP_MODE(port, 0), MG_DP_MODE(port, 1) }; + u32 val; + int i; + + if (tc_port == PORT_TC_NONE) + return; + + for (i = 0; i < ARRAY_SIZE(mg_regs); i++) { + val = I915_READ(mg_regs[i]); + val &= ~(MG_DP_MODE_CFG_TR2PWR_GATING | + MG_DP_MODE_CFG_TRPWR_GATING | + MG_DP_MODE_CFG_CLNPWR_GATING | + MG_DP_MODE_CFG_DIGPWR_GATING | + MG_DP_MODE_CFG_GAONPWR_GATING); + I915_WRITE(mg_regs[i], val); + } + + val = I915_READ(MG_MISC_SUS0(tc_port)); + val &= ~(MG_MISC_SUS0_SUSCLK_DYNCLKGATE_MODE_MASK | + MG_MISC_SUS0_CFG_TR2PWR_GATING | + MG_MISC_SUS0_CFG_CL2PWR_GATING | + MG_MISC_SUS0_CFG_GAONPWR_GATING | + MG_MISC_SUS0_CFG_TRPWR_GATING | + MG_MISC_SUS0_CFG_CL1PWR_GATING | + MG_MISC_SUS0_CFG_DGPWR_GATING); + I915_WRITE(MG_MISC_SUS0(tc_port), val); +} + int intel_dp_max_data_rate(int max_link_clock, int max_lanes) { @@ -401,6 +557,22 @@ static bool intel_dp_link_params_valid(struct intel_dp *intel_dp, int link_rate, return true; } +static bool intel_dp_can_link_train_fallback_for_edp(struct intel_dp *intel_dp, + int link_rate, + uint8_t lane_count) +{ + const struct drm_display_mode *fixed_mode = + intel_dp->attached_connector->panel.fixed_mode; + int mode_rate, max_rate; + + mode_rate = intel_dp_link_required(fixed_mode->clock, 18); + max_rate = intel_dp_max_data_rate(link_rate, lane_count); + if (mode_rate > max_rate) + return false; + + return true; +} + int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp, int link_rate, uint8_t lane_count) { @@ -410,9 +582,23 @@ int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp, intel_dp->num_common_rates, link_rate); if (index > 0) { + if (intel_dp_is_edp(intel_dp) && + !intel_dp_can_link_train_fallback_for_edp(intel_dp, + intel_dp->common_rates[index - 1], + lane_count)) { + DRM_DEBUG_KMS("Retrying Link training for eDP with same parameters\n"); + return 0; + } intel_dp->max_link_rate = intel_dp->common_rates[index - 1]; intel_dp->max_link_lane_count = lane_count; } else if (lane_count > 1) { + if (intel_dp_is_edp(intel_dp) && + !intel_dp_can_link_train_fallback_for_edp(intel_dp, + intel_dp_max_common_rate(intel_dp), + lane_count >> 1)) { + DRM_DEBUG_KMS("Retrying Link training for eDP with same parameters\n"); + return 0; + } intel_dp->max_link_rate = intel_dp_max_common_rate(intel_dp); intel_dp->max_link_lane_count = lane_count >> 1; } else { @@ -498,7 +684,7 @@ intel_dp_pps_init(struct intel_dp *intel_dp); static void pps_lock(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); /* * See intel_power_sequencer_reset() why we need @@ -511,7 +697,7 @@ static void pps_lock(struct intel_dp *intel_dp) static void pps_unlock(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); mutex_unlock(&dev_priv->pps_mutex); @@ -521,7 +707,7 @@ static void pps_unlock(struct intel_dp *intel_dp) static void vlv_power_sequencer_kick(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); enum pipe pipe = intel_dp->pps_pipe; bool pll_enabled, release_cl_override = false; @@ -626,7 +812,7 @@ static enum pipe vlv_find_free_pps(struct drm_i915_private *dev_priv) static enum pipe vlv_power_sequencer_pipe(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); enum pipe pipe; @@ -673,7 +859,7 @@ vlv_power_sequencer_pipe(struct intel_dp *intel_dp) static int bxt_power_sequencer_idx(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); int backlight_controller = dev_priv->vbt.backlight.controller; lockdep_assert_held(&dev_priv->pps_mutex); @@ -742,7 +928,7 @@ vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, static void vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); enum port port = intel_dig_port->base.port; @@ -819,7 +1005,7 @@ struct pps_registers { static void intel_pps_get_registers(struct intel_dp *intel_dp, struct pps_registers *regs) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); int pps_idx = 0; memset(regs, 0, sizeof(*regs)); @@ -865,7 +1051,7 @@ static int edp_notify_handler(struct notifier_block *this, unsigned long code, { struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), edp_notifier); - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); if (!intel_dp_is_edp(intel_dp) || code != SYS_RESTART) return 0; @@ -895,7 +1081,7 @@ static int edp_notify_handler(struct notifier_block *this, unsigned long code, static bool edp_have_panel_power(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); lockdep_assert_held(&dev_priv->pps_mutex); @@ -908,7 +1094,7 @@ static bool edp_have_panel_power(struct intel_dp *intel_dp) static bool edp_have_panel_vdd(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); lockdep_assert_held(&dev_priv->pps_mutex); @@ -922,7 +1108,7 @@ static bool edp_have_panel_vdd(struct intel_dp *intel_dp) static void intel_dp_check_edp(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); if (!intel_dp_is_edp(intel_dp)) return; @@ -938,7 +1124,7 @@ intel_dp_check_edp(struct intel_dp *intel_dp) static uint32_t intel_dp_aux_wait_done(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); i915_reg_t ch_ctl = intel_dp->aux_ch_ctl_reg(intel_dp); uint32_t status; bool done; @@ -955,7 +1141,7 @@ intel_dp_aux_wait_done(struct intel_dp *intel_dp) static uint32_t g4x_get_aux_clock_divider(struct intel_dp *intel_dp, int index) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); if (index) return 0; @@ -969,7 +1155,7 @@ static uint32_t g4x_get_aux_clock_divider(struct intel_dp *intel_dp, int index) static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); if (index) return 0; @@ -987,7 +1173,7 @@ static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); if (intel_dp->aux_ch != AUX_CH_A && HAS_PCH_LPT_H(dev_priv)) { /* Workaround for non-ULT HSW */ @@ -1045,15 +1231,23 @@ static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp, int send_bytes, uint32_t unused) { - return DP_AUX_CH_CTL_SEND_BUSY | - DP_AUX_CH_CTL_DONE | - DP_AUX_CH_CTL_INTERRUPT | - DP_AUX_CH_CTL_TIME_OUT_ERROR | - DP_AUX_CH_CTL_TIME_OUT_MAX | - DP_AUX_CH_CTL_RECEIVE_ERROR | - (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | - DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(32) | - DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); + struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); + uint32_t ret; + + ret = DP_AUX_CH_CTL_SEND_BUSY | + DP_AUX_CH_CTL_DONE | + DP_AUX_CH_CTL_INTERRUPT | + DP_AUX_CH_CTL_TIME_OUT_ERROR | + DP_AUX_CH_CTL_TIME_OUT_MAX | + DP_AUX_CH_CTL_RECEIVE_ERROR | + (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | + DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(32) | + DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); + + if (intel_dig_port->tc_type == TC_PORT_TBT) + ret |= DP_AUX_CH_CTL_TBT_IO; + + return ret; } static int @@ -1381,7 +1575,7 @@ intel_aux_power_domain(struct intel_dp *intel_dp) static i915_reg_t g4x_aux_ctl_reg(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); enum aux_ch aux_ch = intel_dp->aux_ch; switch (aux_ch) { @@ -1397,7 +1591,7 @@ static i915_reg_t g4x_aux_ctl_reg(struct intel_dp *intel_dp) static i915_reg_t g4x_aux_data_reg(struct intel_dp *intel_dp, int index) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); enum aux_ch aux_ch = intel_dp->aux_ch; switch (aux_ch) { @@ -1413,7 +1607,7 @@ static i915_reg_t g4x_aux_data_reg(struct intel_dp *intel_dp, int index) static i915_reg_t ilk_aux_ctl_reg(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); enum aux_ch aux_ch = intel_dp->aux_ch; switch (aux_ch) { @@ -1431,7 +1625,7 @@ static i915_reg_t ilk_aux_ctl_reg(struct intel_dp *intel_dp) static i915_reg_t ilk_aux_data_reg(struct intel_dp *intel_dp, int index) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); enum aux_ch aux_ch = intel_dp->aux_ch; switch (aux_ch) { @@ -1449,7 +1643,7 @@ static i915_reg_t ilk_aux_data_reg(struct intel_dp *intel_dp, int index) static i915_reg_t skl_aux_ctl_reg(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); enum aux_ch aux_ch = intel_dp->aux_ch; switch (aux_ch) { @@ -1468,7 +1662,7 @@ static i915_reg_t skl_aux_ctl_reg(struct intel_dp *intel_dp) static i915_reg_t skl_aux_data_reg(struct intel_dp *intel_dp, int index) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); enum aux_ch aux_ch = intel_dp->aux_ch; switch (aux_ch) { @@ -1494,7 +1688,7 @@ intel_dp_aux_fini(struct intel_dp *intel_dp) static void intel_dp_aux_init(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base; intel_dp->aux_ch = intel_aux_ch(intel_dp); @@ -1662,7 +1856,7 @@ struct link_config_limits { static int intel_dp_compute_bpp(struct intel_dp *intel_dp, struct intel_crtc_state *pipe_config) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_connector *intel_connector = intel_dp->attached_connector; int bpp, bpc; @@ -1834,8 +2028,8 @@ intel_dp_compute_config(struct intel_encoder *encoder, struct intel_connector *intel_connector = intel_dp->attached_connector; struct intel_digital_connector_state *intel_conn_state = to_intel_digital_connector_state(conn_state); - bool reduce_m_n = drm_dp_has_quirk(&intel_dp->desc, - DP_DPCD_QUIRK_LIMITED_M_N); + bool constant_n = drm_dp_has_quirk(&intel_dp->desc, + DP_DPCD_QUIRK_CONSTANT_N); if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv) && port != PORT_A) pipe_config->has_pch_encoder = true; @@ -1900,7 +2094,7 @@ intel_dp_compute_config(struct intel_encoder *encoder, adjusted_mode->crtc_clock, pipe_config->port_clock, &pipe_config->dp_m_n, - reduce_m_n); + constant_n); if (intel_connector->panel.downclock_mode != NULL && dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { @@ -1910,7 +2104,7 @@ intel_dp_compute_config(struct intel_encoder *encoder, intel_connector->panel.downclock_mode->clock, pipe_config->port_clock, &pipe_config->dp_m2_n2, - reduce_m_n); + constant_n); } if (!HAS_DDI(dev_priv)) @@ -2030,7 +2224,7 @@ static void wait_panel_status(struct intel_dp *intel_dp, u32 mask, u32 value) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); i915_reg_t pp_stat_reg, pp_ctrl_reg; lockdep_assert_held(&dev_priv->pps_mutex); @@ -2106,7 +2300,7 @@ static void edp_wait_backlight_off(struct intel_dp *intel_dp) static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); u32 control; lockdep_assert_held(&dev_priv->pps_mutex); @@ -2127,7 +2321,7 @@ static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) */ static bool edp_panel_vdd_on(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); u32 pp; i915_reg_t pp_stat_reg, pp_ctrl_reg; @@ -2198,7 +2392,7 @@ void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); u32 pp; @@ -2264,7 +2458,7 @@ static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) */ static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); lockdep_assert_held(&dev_priv->pps_mutex); @@ -2284,7 +2478,7 @@ static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) static void edp_panel_on(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); u32 pp; i915_reg_t pp_ctrl_reg; @@ -2342,7 +2536,7 @@ void intel_edp_panel_on(struct intel_dp *intel_dp) static void edp_panel_off(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); u32 pp; i915_reg_t pp_ctrl_reg; @@ -2390,7 +2584,7 @@ void intel_edp_panel_off(struct intel_dp *intel_dp) /* Enable backlight in the panel power control. */ static void _intel_edp_backlight_on(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); u32 pp; i915_reg_t pp_ctrl_reg; @@ -2433,7 +2627,7 @@ void intel_edp_backlight_on(const struct intel_crtc_state *crtc_state, /* Disable backlight in the panel power control. */ static void _intel_edp_backlight_off(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); u32 pp; i915_reg_t pp_ctrl_reg; @@ -2864,7 +3058,7 @@ _intel_dp_set_link_train(struct intel_dp *intel_dp, uint32_t *DP, uint8_t dp_train_pat) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); enum port port = intel_dig_port->base.port; uint8_t train_pat_mask = drm_dp_training_pattern_mask(intel_dp->dpcd); @@ -2946,7 +3140,7 @@ _intel_dp_set_link_train(struct intel_dp *intel_dp, static void intel_dp_enable_port(struct intel_dp *intel_dp, const struct intel_crtc_state *old_crtc_state) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); /* enable with pattern 1 (as per spec) */ @@ -3203,7 +3397,7 @@ intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_ uint8_t intel_dp_voltage_max(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base; enum port port = encoder->port; @@ -3222,7 +3416,7 @@ intel_dp_voltage_max(struct intel_dp *intel_dp) uint8_t intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base; enum port port = encoder->port; @@ -3534,13 +3728,13 @@ ivb_cpu_edp_signal_levels(uint8_t train_set) void intel_dp_set_signal_levels(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); enum port port = intel_dig_port->base.port; uint32_t signal_levels, mask = 0; uint8_t train_set = intel_dp->train_set[0]; - if (IS_GEN9_LP(dev_priv) || IS_CANNONLAKE(dev_priv)) { + if (IS_GEN9_LP(dev_priv) || INTEL_GEN(dev_priv) >= 10) { signal_levels = bxt_signal_levels(intel_dp); } else if (HAS_DDI(dev_priv)) { signal_levels = ddi_signal_levels(intel_dp); @@ -3591,7 +3785,7 @@ intel_dp_program_link_training_pattern(struct intel_dp *intel_dp, void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); enum port port = intel_dig_port->base.port; uint32_t val; @@ -4090,12 +4284,14 @@ intel_dp_check_mst_status(struct intel_dp *intel_dp) int ret = 0; int retry; bool handled; + + WARN_ON_ONCE(intel_dp->active_mst_links < 0); bret = intel_dp_get_sink_irq_esi(intel_dp, esi); go_again: if (bret == true) { /* check link status - esi[10] = 0x200c */ - if (intel_dp->active_mst_links && + if (intel_dp->active_mst_links > 0 && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); intel_dp_start_link_train(intel_dp); @@ -4282,7 +4478,7 @@ static bool intel_dp_hotplug(struct intel_encoder *encoder, static bool intel_dp_short_pulse(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); u8 sink_irq_vector = 0; u8 old_sink_count = intel_dp->sink_count; bool ret; @@ -4574,10 +4770,205 @@ static bool bxt_digital_port_connected(struct intel_encoder *encoder) return I915_READ(GEN8_DE_PORT_ISR) & bit; } +static bool icl_combo_port_connected(struct drm_i915_private *dev_priv, + struct intel_digital_port *intel_dig_port) +{ + enum port port = intel_dig_port->base.port; + + return I915_READ(SDEISR) & SDE_DDI_HOTPLUG_ICP(port); +} + +static void icl_update_tc_port_type(struct drm_i915_private *dev_priv, + struct intel_digital_port *intel_dig_port, + bool is_legacy, bool is_typec, bool is_tbt) +{ + enum port port = intel_dig_port->base.port; + enum tc_port_type old_type = intel_dig_port->tc_type; + const char *type_str; + + WARN_ON(is_legacy + is_typec + is_tbt != 1); + + if (is_legacy) { + intel_dig_port->tc_type = TC_PORT_LEGACY; + type_str = "legacy"; + } else if (is_typec) { + intel_dig_port->tc_type = TC_PORT_TYPEC; + type_str = "typec"; + } else if (is_tbt) { + intel_dig_port->tc_type = TC_PORT_TBT; + type_str = "tbt"; + } else { + return; + } + + /* Types are not supposed to be changed at runtime. */ + WARN_ON(old_type != TC_PORT_UNKNOWN && + old_type != intel_dig_port->tc_type); + + if (old_type != intel_dig_port->tc_type) + DRM_DEBUG_KMS("Port %c has TC type %s\n", port_name(port), + type_str); +} + +/* + * This function implements the first part of the Connect Flow described by our + * specification, Gen11 TypeC Programming chapter. The rest of the flow (reading + * lanes, EDID, etc) is done as needed in the typical places. + * + * Unlike the other ports, type-C ports are not available to use as soon as we + * get a hotplug. The type-C PHYs can be shared between multiple controllers: + * display, USB, etc. As a result, handshaking through FIA is required around + * connect and disconnect to cleanly transfer ownership with the controller and + * set the type-C power state. + * + * We could opt to only do the connect flow when we actually try to use the AUX + * channels or do a modeset, then immediately run the disconnect flow after + * usage, but there are some implications on this for a dynamic environment: + * things may go away or change behind our backs. So for now our driver is + * always trying to acquire ownership of the controller as soon as it gets an + * interrupt (or polls state and sees a port is connected) and only gives it + * back when it sees a disconnect. Implementation of a more fine-grained model + * will require a lot of coordination with user space and thorough testing for + * the extra possible cases. + */ +static bool icl_tc_phy_connect(struct drm_i915_private *dev_priv, + struct intel_digital_port *dig_port) +{ + enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port); + u32 val; + + if (dig_port->tc_type != TC_PORT_LEGACY && + dig_port->tc_type != TC_PORT_TYPEC) + return true; + + val = I915_READ(PORT_TX_DFLEXDPPMS); + if (!(val & DP_PHY_MODE_STATUS_COMPLETED(tc_port))) { + DRM_DEBUG_KMS("DP PHY for TC port %d not ready\n", tc_port); + return false; + } + + /* + * This function may be called many times in a row without an HPD event + * in between, so try to avoid the write when we can. + */ + val = I915_READ(PORT_TX_DFLEXDPCSSS); + if (!(val & DP_PHY_MODE_STATUS_NOT_SAFE(tc_port))) { + val |= DP_PHY_MODE_STATUS_NOT_SAFE(tc_port); + I915_WRITE(PORT_TX_DFLEXDPCSSS, val); + } + + /* + * Now we have to re-check the live state, in case the port recently + * became disconnected. Not necessary for legacy mode. + */ + if (dig_port->tc_type == TC_PORT_TYPEC && + !(I915_READ(PORT_TX_DFLEXDPSP) & TC_LIVE_STATE_TC(tc_port))) { + DRM_DEBUG_KMS("TC PHY %d sudden disconnect.\n", tc_port); + val = I915_READ(PORT_TX_DFLEXDPCSSS); + val &= ~DP_PHY_MODE_STATUS_NOT_SAFE(tc_port); + I915_WRITE(PORT_TX_DFLEXDPCSSS, val); + return false; + } + + return true; +} + +/* + * See the comment at the connect function. This implements the Disconnect + * Flow. + */ +static void icl_tc_phy_disconnect(struct drm_i915_private *dev_priv, + struct intel_digital_port *dig_port) +{ + enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port); + u32 val; + + if (dig_port->tc_type != TC_PORT_LEGACY && + dig_port->tc_type != TC_PORT_TYPEC) + return; + + /* + * This function may be called many times in a row without an HPD event + * in between, so try to avoid the write when we can. + */ + val = I915_READ(PORT_TX_DFLEXDPCSSS); + if (val & DP_PHY_MODE_STATUS_NOT_SAFE(tc_port)) { + val &= ~DP_PHY_MODE_STATUS_NOT_SAFE(tc_port); + I915_WRITE(PORT_TX_DFLEXDPCSSS, val); + } +} + +/* + * The type-C ports are different because even when they are connected, they may + * not be available/usable by the graphics driver: see the comment on + * icl_tc_phy_connect(). So in our driver instead of adding the additional + * concept of "usable" and make everything check for "connected and usable" we + * define a port as "connected" when it is not only connected, but also when it + * is usable by the rest of the driver. That maintains the old assumption that + * connected ports are usable, and avoids exposing to the users objects they + * can't really use. + */ +static bool icl_tc_port_connected(struct drm_i915_private *dev_priv, + struct intel_digital_port *intel_dig_port) +{ + enum port port = intel_dig_port->base.port; + enum tc_port tc_port = intel_port_to_tc(dev_priv, port); + bool is_legacy, is_typec, is_tbt; + u32 dpsp; + + is_legacy = I915_READ(SDEISR) & SDE_TC_HOTPLUG_ICP(tc_port); + + /* + * The spec says we shouldn't be using the ISR bits for detecting + * between TC and TBT. We should use DFLEXDPSP. + */ + dpsp = I915_READ(PORT_TX_DFLEXDPSP); + is_typec = dpsp & TC_LIVE_STATE_TC(tc_port); + is_tbt = dpsp & TC_LIVE_STATE_TBT(tc_port); + + if (!is_legacy && !is_typec && !is_tbt) { + icl_tc_phy_disconnect(dev_priv, intel_dig_port); + return false; + } + + icl_update_tc_port_type(dev_priv, intel_dig_port, is_legacy, is_typec, + is_tbt); + + if (!icl_tc_phy_connect(dev_priv, intel_dig_port)) + return false; + + return true; +} + +static bool icl_digital_port_connected(struct intel_encoder *encoder) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base); + + switch (encoder->hpd_pin) { + case HPD_PORT_A: + case HPD_PORT_B: + return icl_combo_port_connected(dev_priv, dig_port); + case HPD_PORT_C: + case HPD_PORT_D: + case HPD_PORT_E: + case HPD_PORT_F: + return icl_tc_port_connected(dev_priv, dig_port); + default: + MISSING_CASE(encoder->hpd_pin); + return false; + } +} + /* * intel_digital_port_connected - is the specified port connected? * @encoder: intel_encoder * + * In cases where there's a connector physically connected but it can't be used + * by our hardware we also return false, since the rest of the driver should + * pretty much treat the port as disconnected. This is relevant for type-C + * (starting on ICL) where there's ownership involved. + * * Return %true if port is connected, %false otherwise. */ bool intel_digital_port_connected(struct intel_encoder *encoder) @@ -4601,8 +4992,10 @@ bool intel_digital_port_connected(struct intel_encoder *encoder) return bdw_digital_port_connected(encoder); else if (IS_GEN9_LP(dev_priv)) return bxt_digital_port_connected(encoder); - else + else if (IS_GEN9_BC(dev_priv) || IS_GEN10(dev_priv)) return spt_digital_port_connected(encoder); + else + return icl_digital_port_connected(encoder); } static struct edid * @@ -5177,7 +5570,7 @@ static const struct intel_hdcp_shim intel_dp_hdcp_shim = { static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); lockdep_assert_held(&dev_priv->pps_mutex); @@ -5198,7 +5591,7 @@ static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) static enum pipe vlv_active_pipe(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base; enum pipe pipe; @@ -5265,7 +5658,7 @@ enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) { struct intel_dp *intel_dp = &intel_dig_port->dp; - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); enum irqreturn ret = IRQ_NONE; if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) { @@ -5381,7 +5774,7 @@ static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) static void intel_pps_readout_hw_state(struct intel_dp *intel_dp, struct edp_power_seq *seq) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); u32 pp_on, pp_off, pp_div = 0, pp_ctl = 0; struct pps_registers regs; @@ -5449,7 +5842,7 @@ intel_pps_verify_state(struct intel_dp *intel_dp) static void intel_dp_init_panel_power_sequencer(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct edp_power_seq cur, vbt, spec, *final = &intel_dp->pps_delays; @@ -5542,7 +5935,7 @@ static void intel_dp_init_panel_power_sequencer_registers(struct intel_dp *intel_dp, bool force_disable_vdd) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); u32 pp_on, pp_off, pp_div, port_sel = 0; int div = dev_priv->rawclk_freq / 1000; struct pps_registers regs; @@ -5638,7 +6031,7 @@ intel_dp_init_panel_power_sequencer_registers(struct intel_dp *intel_dp, static void intel_dp_pps_init(struct intel_dp *intel_dp) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { vlv_initial_power_sequencer_setup(intel_dp); @@ -5755,7 +6148,7 @@ static void intel_dp_set_drrs_state(struct drm_i915_private *dev_priv, void intel_edp_drrs_enable(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); if (!crtc_state->has_drrs) { DRM_DEBUG_KMS("Panel doesn't support DRRS\n"); @@ -5790,7 +6183,7 @@ unlock: void intel_edp_drrs_disable(struct intel_dp *intel_dp, const struct intel_crtc_state *old_crtc_state) { - struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); if (!old_crtc_state->has_drrs) return; @@ -6022,8 +6415,8 @@ intel_dp_drrs_init(struct intel_connector *connector, static bool intel_edp_init_connector(struct intel_dp *intel_dp, struct intel_connector *intel_connector) { - struct drm_device *dev = intel_dp_to_dev(intel_dp); - struct drm_i915_private *dev_priv = to_i915(dev); + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); + struct drm_device *dev = &dev_priv->drm; struct drm_connector *connector = &intel_connector->base; struct drm_display_mode *fixed_mode = NULL; struct drm_display_mode *downclock_mode = NULL; |