diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_psr.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_psr.c | 229 |
1 files changed, 179 insertions, 50 deletions
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index 2e32615eeada..23175c5c4a50 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -56,12 +56,109 @@ #include "intel_drv.h" #include "i915_drv.h" -static bool is_edp_psr(struct intel_dp *intel_dp) +static inline enum intel_display_power_domain +psr_aux_domain(struct intel_dp *intel_dp) { - if (!intel_dp_is_edp(intel_dp)) + /* CNL HW requires corresponding AUX IOs to be powered up for PSR. + * However, for non-A AUX ports the corresponding non-EDP transcoders + * would have already enabled power well 2 and DC_OFF. This means we can + * acquire a wider POWER_DOMAIN_AUX_{B,C,D,F} reference instead of a + * specific AUX_IO reference without powering up any extra wells. + * Note that PSR is enabled only on Port A even though this function + * returns the correct domain for other ports too. + */ + return intel_dp->aux_ch == AUX_CH_A ? POWER_DOMAIN_AUX_IO_A : + intel_dp->aux_power_domain; +} + +static void psr_aux_io_power_get(struct intel_dp *intel_dp) +{ + struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); + struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); + + if (INTEL_GEN(dev_priv) < 10) + return; + + intel_display_power_get(dev_priv, psr_aux_domain(intel_dp)); +} + +static void psr_aux_io_power_put(struct intel_dp *intel_dp) +{ + struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); + struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); + + if (INTEL_GEN(dev_priv) < 10) + return; + + intel_display_power_put(dev_priv, psr_aux_domain(intel_dp)); +} + +static bool intel_dp_get_y_cord_status(struct intel_dp *intel_dp) +{ + uint8_t psr_caps = 0; + + if (drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_CAPS, &psr_caps) != 1) + return false; + return psr_caps & DP_PSR2_SU_Y_COORDINATE_REQUIRED; +} + +static bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp) +{ + uint8_t dprx = 0; + + if (drm_dp_dpcd_readb(&intel_dp->aux, DP_DPRX_FEATURE_ENUMERATION_LIST, + &dprx) != 1) return false; + return dprx & DP_VSC_SDP_EXT_FOR_COLORIMETRY_SUPPORTED; +} + +static bool intel_dp_get_alpm_status(struct intel_dp *intel_dp) +{ + uint8_t alpm_caps = 0; - return intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED; + if (drm_dp_dpcd_readb(&intel_dp->aux, DP_RECEIVER_ALPM_CAP, + &alpm_caps) != 1) + return false; + return alpm_caps & DP_ALPM_CAP; +} + +void intel_psr_init_dpcd(struct intel_dp *intel_dp) +{ + struct drm_i915_private *dev_priv = + to_i915(dp_to_dig_port(intel_dp)->base.base.dev); + + drm_dp_dpcd_read(&intel_dp->aux, DP_PSR_SUPPORT, intel_dp->psr_dpcd, + sizeof(intel_dp->psr_dpcd)); + + if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { + dev_priv->psr.sink_support = true; + DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); + } + + if (INTEL_GEN(dev_priv) >= 9 && + (intel_dp->psr_dpcd[0] & DP_PSR2_IS_SUPPORTED)) { + uint8_t frame_sync_cap; + + dev_priv->psr.sink_support = true; + if (drm_dp_dpcd_readb(&intel_dp->aux, + DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP, + &frame_sync_cap) != 1) + frame_sync_cap = 0; + dev_priv->psr.aux_frame_sync = frame_sync_cap & DP_AUX_FRAME_SYNC_CAP; + /* PSR2 needs frame sync as well */ + dev_priv->psr.psr2_support = dev_priv->psr.aux_frame_sync; + DRM_DEBUG_KMS("PSR2 %s on sink", + dev_priv->psr.psr2_support ? "supported" : "not supported"); + + if (dev_priv->psr.psr2_support) { + dev_priv->psr.y_cord_support = + intel_dp_get_y_cord_status(intel_dp); + dev_priv->psr.colorimetry_support = + intel_dp_get_colorimetry_status(intel_dp); + dev_priv->psr.alpm = + intel_dp_get_alpm_status(intel_dp); + } + } } static bool vlv_is_psr_active_on_pipe(struct drm_device *dev, int pipe) @@ -134,7 +231,7 @@ static void vlv_psr_enable_sink(struct intel_dp *intel_dp) static i915_reg_t psr_aux_ctl_reg(struct drm_i915_private *dev_priv, enum port port) { - if (INTEL_INFO(dev_priv)->gen >= 9) + if (INTEL_GEN(dev_priv) >= 9) return DP_AUX_CH_CTL(port); else return EDP_PSR_AUX_CTL; @@ -143,7 +240,7 @@ static i915_reg_t psr_aux_ctl_reg(struct drm_i915_private *dev_priv, static i915_reg_t psr_aux_data_reg(struct drm_i915_private *dev_priv, enum port port, int index) { - if (INTEL_INFO(dev_priv)->gen >= 9) + if (INTEL_GEN(dev_priv) >= 9) return DP_AUX_CH_DATA(port, index); else return EDP_PSR_AUX_DATA(index); @@ -349,6 +446,50 @@ static void hsw_psr_activate(struct intel_dp *intel_dp) hsw_activate_psr1(intel_dp); } +static bool intel_psr2_config_valid(struct intel_dp *intel_dp, + struct intel_crtc_state *crtc_state) +{ + 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); + int crtc_hdisplay = crtc_state->base.adjusted_mode.crtc_hdisplay; + int crtc_vdisplay = crtc_state->base.adjusted_mode.crtc_vdisplay; + int psr_max_h = 0, psr_max_v = 0; + + /* + * FIXME psr2_support is messed up. It's both computed + * dynamically during PSR enable, and extracted from sink + * caps during eDP detection. + */ + if (!dev_priv->psr.psr2_support) + return false; + + if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) { + psr_max_h = 4096; + psr_max_v = 2304; + } else if (IS_GEN9(dev_priv)) { + psr_max_h = 3640; + psr_max_v = 2304; + } + + if (crtc_hdisplay > psr_max_h || crtc_vdisplay > psr_max_v) { + DRM_DEBUG_KMS("PSR2 not enabled, resolution %dx%d > max supported %dx%d\n", + crtc_hdisplay, crtc_vdisplay, + psr_max_h, psr_max_v); + return false; + } + + /* + * FIXME:enable psr2 only for y-cordinate psr2 panels + * After gtc implementation , remove this restriction. + */ + if (!dev_priv->psr.y_cord_support) { + DRM_DEBUG_KMS("PSR2 not enabled, panel does not support Y coordinate\n"); + return false; + } + + return true; +} + void intel_psr_compute_config(struct intel_dp *intel_dp, struct intel_crtc_state *crtc_state) { @@ -358,10 +499,7 @@ void intel_psr_compute_config(struct intel_dp *intel_dp, &crtc_state->base.adjusted_mode; int psr_setup_time; - if (!HAS_PSR(dev_priv)) - return; - - if (!is_edp_psr(intel_dp)) + if (!CAN_PSR(dev_priv)) return; if (!i915_modparams.enable_psr) { @@ -414,34 +552,14 @@ void intel_psr_compute_config(struct intel_dp *intel_dp, return; } - /* - * FIXME psr2_support is messed up. It's both computed - * dynamically during PSR enable, and extracted from sink - * caps during eDP detection. - */ - if (!dev_priv->psr.psr2_support) { - crtc_state->has_psr = true; - return; - } - - /* PSR2 is restricted to work with panel resolutions upto 3200x2000 */ - if (adjusted_mode->crtc_hdisplay > 3200 || - adjusted_mode->crtc_vdisplay > 2000) { - DRM_DEBUG_KMS("PSR2 disabled, panel resolution too big\n"); - return; - } - - /* - * FIXME:enable psr2 only for y-cordinate psr2 panels - * After gtc implementation , remove this restriction. - */ - if (!dev_priv->psr.y_cord_support) { - DRM_DEBUG_KMS("PSR2 disabled, panel does not support Y coordinate\n"); + if (!(intel_dp->edp_dpcd[1] & DP_EDP_SET_POWER_CAP)) { + DRM_DEBUG_KMS("PSR condition failed: panel lacks power state control\n"); return; } crtc_state->has_psr = true; - crtc_state->has_psr2 = true; + crtc_state->has_psr2 = intel_psr2_config_valid(intel_dp, crtc_state); + DRM_DEBUG_KMS("Enabling PSR%s\n", crtc_state->has_psr2 ? "2" : ""); } static void intel_psr_activate(struct intel_dp *intel_dp) @@ -470,13 +588,15 @@ static void hsw_psr_enable_source(struct intel_dp *intel_dp, enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; u32 chicken; + psr_aux_io_power_get(intel_dp); + if (dev_priv->psr.psr2_support) { chicken = PSR2_VSC_ENABLE_PROG_HEADER; if (dev_priv->psr.y_cord_support) chicken |= PSR2_ADD_VERTICAL_LINE_COUNT; I915_WRITE(CHICKEN_TRANS(cpu_transcoder), chicken); - I915_WRITE(EDP_PSR_DEBUG_CTL, + I915_WRITE(EDP_PSR_DEBUG, EDP_PSR_DEBUG_MASK_MEMUP | EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP | @@ -490,7 +610,7 @@ static void hsw_psr_enable_source(struct intel_dp *intel_dp, * preventing other hw tracking issues now we can rely * on frontbuffer tracking. */ - I915_WRITE(EDP_PSR_DEBUG_CTL, + I915_WRITE(EDP_PSR_DEBUG, EDP_PSR_DEBUG_MASK_MEMUP | EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP); @@ -514,6 +634,9 @@ void intel_psr_enable(struct intel_dp *intel_dp, if (!crtc_state->has_psr) return; + if (WARN_ON(!CAN_PSR(dev_priv))) + return; + WARN_ON(dev_priv->drrs.dp); mutex_lock(&dev_priv->psr.lock); if (dev_priv->psr.enabled) { @@ -522,8 +645,6 @@ void intel_psr_enable(struct intel_dp *intel_dp, } dev_priv->psr.psr2_support = crtc_state->has_psr2; - dev_priv->psr.source_ok = true; - dev_priv->psr.busy_frontbuffer_bits = 0; dev_priv->psr.setup_vsc(intel_dp, crtc_state); @@ -599,7 +720,7 @@ static void hsw_psr_disable(struct intel_dp *intel_dp, 0); if (dev_priv->psr.psr2_support) { - psr_status = EDP_PSR2_STATUS_CTL; + psr_status = EDP_PSR2_STATUS; psr_status_mask = EDP_PSR2_STATUS_STATE_MASK; I915_WRITE(EDP_PSR2_CTL, @@ -607,7 +728,7 @@ static void hsw_psr_disable(struct intel_dp *intel_dp, ~(EDP_PSR2_ENABLE | EDP_SU_TRACK_ENABLE)); } else { - psr_status = EDP_PSR_STATUS_CTL; + psr_status = EDP_PSR_STATUS; psr_status_mask = EDP_PSR_STATUS_STATE_MASK; I915_WRITE(EDP_PSR_CTL, @@ -627,6 +748,8 @@ static void hsw_psr_disable(struct intel_dp *intel_dp, else WARN_ON(I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE); } + + psr_aux_io_power_put(intel_dp); } /** @@ -646,6 +769,9 @@ void intel_psr_disable(struct intel_dp *intel_dp, if (!old_crtc_state->has_psr) return; + if (WARN_ON(!CAN_PSR(dev_priv))) + return; + mutex_lock(&dev_priv->psr.lock); if (!dev_priv->psr.enabled) { mutex_unlock(&dev_priv->psr.lock); @@ -679,19 +805,19 @@ static void intel_psr_work(struct work_struct *work) if (HAS_DDI(dev_priv)) { if (dev_priv->psr.psr2_support) { if (intel_wait_for_register(dev_priv, - EDP_PSR2_STATUS_CTL, - EDP_PSR2_STATUS_STATE_MASK, - 0, - 50)) { + EDP_PSR2_STATUS, + EDP_PSR2_STATUS_STATE_MASK, + 0, + 50)) { DRM_ERROR("Timed out waiting for PSR2 Idle for re-enable\n"); return; } } else { if (intel_wait_for_register(dev_priv, - EDP_PSR_STATUS_CTL, - EDP_PSR_STATUS_STATE_MASK, - 0, - 50)) { + EDP_PSR_STATUS, + EDP_PSR_STATUS_STATE_MASK, + 0, + 50)) { DRM_ERROR("Timed out waiting for PSR Idle for re-enable\n"); return; } @@ -796,7 +922,7 @@ void intel_psr_single_frame_update(struct drm_i915_private *dev_priv, enum pipe pipe; u32 val; - if (!HAS_PSR(dev_priv)) + if (!CAN_PSR(dev_priv)) return; /* @@ -845,7 +971,7 @@ void intel_psr_invalidate(struct drm_i915_private *dev_priv, struct drm_crtc *crtc; enum pipe pipe; - if (!HAS_PSR(dev_priv)) + if (!CAN_PSR(dev_priv)) return; mutex_lock(&dev_priv->psr.lock); @@ -885,7 +1011,7 @@ void intel_psr_flush(struct drm_i915_private *dev_priv, struct drm_crtc *crtc; enum pipe pipe; - if (!HAS_PSR(dev_priv)) + if (!CAN_PSR(dev_priv)) return; mutex_lock(&dev_priv->psr.lock); @@ -926,6 +1052,9 @@ void intel_psr_init(struct drm_i915_private *dev_priv) dev_priv->psr_mmio_base = IS_HASWELL(dev_priv) ? HSW_EDP_PSR_BASE : BDW_EDP_PSR_BASE; + if (!dev_priv->psr.sink_support) + return; + /* Per platform default: all disabled. */ if (i915_modparams.enable_psr == -1) i915_modparams.enable_psr = 0; |