diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_psr.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_psr.c | 622 |
1 files changed, 426 insertions, 196 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 69d908e6a050..89c9cf5f38d2 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -26,7 +26,8 @@ #include "display/intel_dp.h" #include "i915_drv.h" -#include "intel_drv.h" +#include "intel_atomic.h" +#include "intel_display_types.h" #include "intel_psr.h" #include "intel_sprite.h" @@ -76,7 +77,7 @@ static bool intel_psr2_enabled(struct drm_i915_private *dev_priv, const struct intel_crtc_state *crtc_state) { /* Cannot enable DSC and PSR2 simultaneously */ - WARN_ON(crtc_state->dsc_params.compression_enable && + WARN_ON(crtc_state->dsc.compression_enable && crtc_state->has_psr2); switch (dev_priv->psr.debug & I915_PSR_DEBUG_MODE_MASK) { @@ -88,48 +89,35 @@ static bool intel_psr2_enabled(struct drm_i915_private *dev_priv, } } -static int edp_psr_shift(enum transcoder cpu_transcoder) +static void psr_irq_control(struct drm_i915_private *dev_priv) { - switch (cpu_transcoder) { - case TRANSCODER_A: - return EDP_PSR_TRANSCODER_A_SHIFT; - case TRANSCODER_B: - return EDP_PSR_TRANSCODER_B_SHIFT; - case TRANSCODER_C: - return EDP_PSR_TRANSCODER_C_SHIFT; - default: - MISSING_CASE(cpu_transcoder); - /* fallthrough */ - case TRANSCODER_EDP: - return EDP_PSR_TRANSCODER_EDP_SHIFT; - } -} + enum transcoder trans_shift; + u32 mask, val; + i915_reg_t imr_reg; -void intel_psr_irq_control(struct drm_i915_private *dev_priv, u32 debug) -{ - u32 debug_mask, mask; - enum transcoder cpu_transcoder; - u32 transcoders = BIT(TRANSCODER_EDP); - - if (INTEL_GEN(dev_priv) >= 8) - transcoders |= BIT(TRANSCODER_A) | - BIT(TRANSCODER_B) | - BIT(TRANSCODER_C); - - debug_mask = 0; - mask = 0; - for_each_cpu_transcoder_masked(dev_priv, cpu_transcoder, transcoders) { - int shift = edp_psr_shift(cpu_transcoder); - - mask |= EDP_PSR_ERROR(shift); - debug_mask |= EDP_PSR_POST_EXIT(shift) | - EDP_PSR_PRE_ENTRY(shift); + /* + * gen12+ has registers relative to transcoder and one per transcoder + * using the same bit definition: handle it as TRANSCODER_EDP to force + * 0 shift in bit definition + */ + if (INTEL_GEN(dev_priv) >= 12) { + trans_shift = 0; + imr_reg = TRANS_PSR_IMR(dev_priv->psr.transcoder); + } else { + trans_shift = dev_priv->psr.transcoder; + imr_reg = EDP_PSR_IMR; } - if (debug & I915_PSR_DEBUG_IRQ) - mask |= debug_mask; + mask = EDP_PSR_ERROR(trans_shift); + if (dev_priv->psr.debug & I915_PSR_DEBUG_IRQ) + mask |= EDP_PSR_POST_EXIT(trans_shift) | + EDP_PSR_PRE_ENTRY(trans_shift); - I915_WRITE(EDP_PSR_IMR, ~mask); + /* Warning: it is masking/setting reserved bits too */ + val = I915_READ(imr_reg); + val &= ~EDP_PSR_TRANS_MASK(trans_shift); + val |= ~mask; + I915_WRITE(imr_reg, val); } static void psr_event_print(u32 val, bool psr2_enabled) @@ -171,60 +159,58 @@ static void psr_event_print(u32 val, bool psr2_enabled) void intel_psr_irq_handler(struct drm_i915_private *dev_priv, u32 psr_iir) { - u32 transcoders = BIT(TRANSCODER_EDP); - enum transcoder cpu_transcoder; + enum transcoder cpu_transcoder = dev_priv->psr.transcoder; + enum transcoder trans_shift; + i915_reg_t imr_reg; ktime_t time_ns = ktime_get(); - u32 mask = 0; - - if (INTEL_GEN(dev_priv) >= 8) - transcoders |= BIT(TRANSCODER_A) | - BIT(TRANSCODER_B) | - BIT(TRANSCODER_C); - for_each_cpu_transcoder_masked(dev_priv, cpu_transcoder, transcoders) { - int shift = edp_psr_shift(cpu_transcoder); + if (INTEL_GEN(dev_priv) >= 12) { + trans_shift = 0; + imr_reg = TRANS_PSR_IMR(dev_priv->psr.transcoder); + } else { + trans_shift = dev_priv->psr.transcoder; + imr_reg = EDP_PSR_IMR; + } - if (psr_iir & EDP_PSR_ERROR(shift)) { - DRM_WARN("[transcoder %s] PSR aux error\n", - transcoder_name(cpu_transcoder)); + if (psr_iir & EDP_PSR_PRE_ENTRY(trans_shift)) { + dev_priv->psr.last_entry_attempt = time_ns; + DRM_DEBUG_KMS("[transcoder %s] PSR entry attempt in 2 vblanks\n", + transcoder_name(cpu_transcoder)); + } - dev_priv->psr.irq_aux_error = true; + if (psr_iir & EDP_PSR_POST_EXIT(trans_shift)) { + dev_priv->psr.last_exit = time_ns; + DRM_DEBUG_KMS("[transcoder %s] PSR exit completed\n", + transcoder_name(cpu_transcoder)); - /* - * If this interruption is not masked it will keep - * interrupting so fast that it prevents the scheduled - * work to run. - * Also after a PSR error, we don't want to arm PSR - * again so we don't care about unmask the interruption - * or unset irq_aux_error. - */ - mask |= EDP_PSR_ERROR(shift); - } + if (INTEL_GEN(dev_priv) >= 9) { + u32 val = I915_READ(PSR_EVENT(cpu_transcoder)); + bool psr2_enabled = dev_priv->psr.psr2_enabled; - if (psr_iir & EDP_PSR_PRE_ENTRY(shift)) { - dev_priv->psr.last_entry_attempt = time_ns; - DRM_DEBUG_KMS("[transcoder %s] PSR entry attempt in 2 vblanks\n", - transcoder_name(cpu_transcoder)); + I915_WRITE(PSR_EVENT(cpu_transcoder), val); + psr_event_print(val, psr2_enabled); } + } - if (psr_iir & EDP_PSR_POST_EXIT(shift)) { - dev_priv->psr.last_exit = time_ns; - DRM_DEBUG_KMS("[transcoder %s] PSR exit completed\n", - transcoder_name(cpu_transcoder)); + if (psr_iir & EDP_PSR_ERROR(trans_shift)) { + u32 val; - if (INTEL_GEN(dev_priv) >= 9) { - u32 val = I915_READ(PSR_EVENT(cpu_transcoder)); - bool psr2_enabled = dev_priv->psr.psr2_enabled; + DRM_WARN("[transcoder %s] PSR aux error\n", + transcoder_name(cpu_transcoder)); - I915_WRITE(PSR_EVENT(cpu_transcoder), val); - psr_event_print(val, psr2_enabled); - } - } - } + dev_priv->psr.irq_aux_error = true; - if (mask) { - mask |= I915_READ(EDP_PSR_IMR); - I915_WRITE(EDP_PSR_IMR, mask); + /* + * If this interruption is not masked it will keep + * interrupting so fast that it prevents the scheduled + * work to run. + * Also after a PSR error, we don't want to arm PSR + * again so we don't care about unmask the interruption + * or unset irq_aux_error. + */ + val = I915_READ(imr_reg); + val |= EDP_PSR_ERROR(trans_shift); + I915_WRITE(imr_reg, val); schedule_work(&dev_priv->psr.work); } @@ -283,6 +269,11 @@ 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); + if (dev_priv->psr.dp) { + DRM_WARN("More than one eDP panel found, PSR support should be extended\n"); + return; + } + drm_dp_dpcd_read(&intel_dp->aux, DP_PSR_SUPPORT, intel_dp->psr_dpcd, sizeof(intel_dp->psr_dpcd)); @@ -305,7 +296,6 @@ void intel_psr_init_dpcd(struct intel_dp *intel_dp) dev_priv->psr.sink_sync_latency = intel_dp_get_sink_sync_latency(intel_dp); - WARN_ON(dev_priv->psr.dp); dev_priv->psr.dp = intel_dp; if (INTEL_GEN(dev_priv) >= 9 && @@ -390,7 +380,7 @@ static void hsw_psr_setup_aux(struct intel_dp *intel_dp) BUILD_BUG_ON(sizeof(aux_msg) > 20); for (i = 0; i < sizeof(aux_msg); i += 4) - I915_WRITE(EDP_PSR_AUX_DATA(i >> 2), + I915_WRITE(EDP_PSR_AUX_DATA(dev_priv->psr.transcoder, i >> 2), intel_dp_pack_aux(&aux_msg[i], sizeof(aux_msg) - i)); aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, 0); @@ -401,7 +391,7 @@ static void hsw_psr_setup_aux(struct intel_dp *intel_dp) /* Select only valid bits for SRD_AUX_CTL */ aux_ctl &= psr_aux_mask; - I915_WRITE(EDP_PSR_AUX_CTL, aux_ctl); + I915_WRITE(EDP_PSR_AUX_CTL(dev_priv->psr.transcoder), aux_ctl); } static void intel_psr_enable_sink(struct intel_dp *intel_dp) @@ -412,7 +402,9 @@ static void intel_psr_enable_sink(struct intel_dp *intel_dp) /* Enable ALPM at sink for psr2 */ if (dev_priv->psr.psr2_enabled) { drm_dp_dpcd_writeb(&intel_dp->aux, DP_RECEIVER_ALPM_CONFIG, - DP_ALPM_ENABLE); + DP_ALPM_ENABLE | + DP_ALPM_LOCK_ERROR_IRQ_HPD_ENABLE); + dpcd_val |= DP_PSR_ENABLE_PSR2 | DP_PSR_IRQ_HPD_WITH_CRC_ERRORS; } else { if (dev_priv->psr.link_standby) @@ -491,8 +483,9 @@ static void hsw_activate_psr1(struct intel_dp *intel_dp) if (INTEL_GEN(dev_priv) >= 8) val |= EDP_PSR_CRC_ENABLE; - val |= I915_READ(EDP_PSR_CTL) & EDP_PSR_RESTORE_PSR_ACTIVE_CTX_MASK; - I915_WRITE(EDP_PSR_CTL, val); + val |= (I915_READ(EDP_PSR_CTL(dev_priv->psr.transcoder)) & + EDP_PSR_RESTORE_PSR_ACTIVE_CTX_MASK); + I915_WRITE(EDP_PSR_CTL(dev_priv->psr.transcoder), val); } static void hsw_activate_psr2(struct intel_dp *intel_dp) @@ -528,38 +521,128 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp) * PSR2 HW is incorrectly using EDP_PSR_TP1_TP3_SEL and BSpec is * recommending keep this bit unset while PSR2 is enabled. */ - I915_WRITE(EDP_PSR_CTL, 0); + I915_WRITE(EDP_PSR_CTL(dev_priv->psr.transcoder), 0); + + I915_WRITE(EDP_PSR2_CTL(dev_priv->psr.transcoder), val); +} + +static bool +transcoder_has_psr2(struct drm_i915_private *dev_priv, enum transcoder trans) +{ + if (INTEL_GEN(dev_priv) < 9) + return false; + else if (INTEL_GEN(dev_priv) >= 12) + return trans == TRANSCODER_A; + else + return trans == TRANSCODER_EDP; +} + +static u32 intel_get_frame_time_us(const struct intel_crtc_state *cstate) +{ + if (!cstate || !cstate->hw.active) + return 0; + + return DIV_ROUND_UP(1000 * 1000, + drm_mode_vrefresh(&cstate->hw.adjusted_mode)); +} + +static void psr2_program_idle_frames(struct drm_i915_private *dev_priv, + u32 idle_frames) +{ + u32 val; + + idle_frames <<= EDP_PSR2_IDLE_FRAME_SHIFT; + val = I915_READ(EDP_PSR2_CTL(dev_priv->psr.transcoder)); + val &= ~EDP_PSR2_IDLE_FRAME_MASK; + val |= idle_frames; + I915_WRITE(EDP_PSR2_CTL(dev_priv->psr.transcoder), val); +} + +static void tgl_psr2_enable_dc3co(struct drm_i915_private *dev_priv) +{ + psr2_program_idle_frames(dev_priv, 0); + intel_display_power_set_target_dc_state(dev_priv, DC_STATE_EN_DC3CO); +} + +static void tgl_psr2_disable_dc3co(struct drm_i915_private *dev_priv) +{ + int idle_frames; + + intel_display_power_set_target_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6); + /* + * Restore PSR2 idle frame let's use 6 as the minimum to cover all known + * cases including the off-by-one issue that HW has in some cases. + */ + idle_frames = max(6, dev_priv->vbt.psr.idle_frames); + idle_frames = max(idle_frames, dev_priv->psr.sink_sync_latency + 1); + psr2_program_idle_frames(dev_priv, idle_frames); +} + +static void tgl_dc5_idle_thread(struct work_struct *work) +{ + struct drm_i915_private *dev_priv = + container_of(work, typeof(*dev_priv), psr.idle_work.work); + + mutex_lock(&dev_priv->psr.lock); + /* If delayed work is pending, it is not idle */ + if (delayed_work_pending(&dev_priv->psr.idle_work)) + goto unlock; + + DRM_DEBUG_KMS("DC5/6 idle thread\n"); + tgl_psr2_disable_dc3co(dev_priv); +unlock: + mutex_unlock(&dev_priv->psr.lock); +} + +static void tgl_disallow_dc3co_on_psr2_exit(struct drm_i915_private *dev_priv) +{ + if (!dev_priv->psr.dc3co_enabled) + return; - I915_WRITE(EDP_PSR2_CTL, val); + cancel_delayed_work(&dev_priv->psr.idle_work); + /* Before PSR2 exit disallow dc3co*/ + tgl_psr2_disable_dc3co(dev_priv); } static bool intel_psr2_config_valid(struct intel_dp *intel_dp, struct intel_crtc_state *crtc_state) { struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); - 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; + int crtc_hdisplay = crtc_state->hw.adjusted_mode.crtc_hdisplay; + int crtc_vdisplay = crtc_state->hw.adjusted_mode.crtc_vdisplay; + int psr_max_h = 0, psr_max_v = 0, max_bpp = 0; if (!dev_priv->psr.sink_psr2_support) return false; + if (!transcoder_has_psr2(dev_priv, crtc_state->cpu_transcoder)) { + DRM_DEBUG_KMS("PSR2 not supported in transcoder %s\n", + transcoder_name(crtc_state->cpu_transcoder)); + return false; + } + /* * DSC and PSR2 cannot be enabled simultaneously. If a requested * resolution requires DSC to be enabled, priority is given to DSC * over PSR2. */ - if (crtc_state->dsc_params.compression_enable) { + if (crtc_state->dsc.compression_enable) { DRM_DEBUG_KMS("PSR2 cannot be enabled since DSC is enabled\n"); return false; } - if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) { + if (INTEL_GEN(dev_priv) >= 12) { + psr_max_h = 5120; + psr_max_v = 3200; + max_bpp = 30; + } else if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) { psr_max_h = 4096; psr_max_v = 2304; + max_bpp = 24; } else if (IS_GEN(dev_priv, 9)) { psr_max_h = 3640; psr_max_v = 2304; + max_bpp = 24; } if (crtc_hdisplay > psr_max_h || crtc_vdisplay > psr_max_v) { @@ -569,6 +652,12 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp, return false; } + if (crtc_state->pipe_bpp > max_bpp) { + DRM_DEBUG_KMS("PSR2 not enabled, pipe bpp %d > max supported %d\n", + crtc_state->pipe_bpp, max_bpp); + return false; + } + /* * HW sends SU blocks of size four scan lines, which means the starting * X coordinate and Y granularity requirements will always be met. We @@ -595,7 +684,7 @@ void intel_psr_compute_config(struct intel_dp *intel_dp, struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); const struct drm_display_mode *adjusted_mode = - &crtc_state->base.adjusted_mode; + &crtc_state->hw.adjusted_mode; int psr_setup_time; if (!CAN_PSR(dev_priv)) @@ -606,10 +695,9 @@ void intel_psr_compute_config(struct intel_dp *intel_dp, /* * HSW spec explicitly says PSR is tied to port A. - * BDW+ platforms with DDI implementation of PSR have different - * PSR registers per transcoder and we only implement transcoder EDP - * ones. Since by Display design transcoder EDP is tied to port A - * we can safely escape based on the port A. + * BDW+ platforms have a instance of PSR registers per transcoder but + * for now it only supports one instance of PSR, so lets keep it + * hardcoded to PORT_A */ if (dig_port->base.port != PORT_A) { DRM_DEBUG_KMS("PSR condition failed: Port not supported\n"); @@ -648,9 +736,10 @@ static void intel_psr_activate(struct intel_dp *intel_dp) { struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); - if (INTEL_GEN(dev_priv) >= 9) - WARN_ON(I915_READ(EDP_PSR2_CTL) & EDP_PSR2_ENABLE); - WARN_ON(I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE); + if (transcoder_has_psr2(dev_priv, dev_priv->psr.transcoder)) + WARN_ON(I915_READ(EDP_PSR2_CTL(dev_priv->psr.transcoder)) & EDP_PSR2_ENABLE); + + WARN_ON(I915_READ(EDP_PSR_CTL(dev_priv->psr.transcoder)) & EDP_PSR_ENABLE); WARN_ON(dev_priv->psr.active); lockdep_assert_held(&dev_priv->psr.lock); @@ -663,25 +752,6 @@ static void intel_psr_activate(struct intel_dp *intel_dp) dev_priv->psr.active = true; } -static i915_reg_t gen9_chicken_trans_reg(struct drm_i915_private *dev_priv, - enum transcoder cpu_transcoder) -{ - static const i915_reg_t regs[] = { - [TRANSCODER_A] = CHICKEN_TRANS_A, - [TRANSCODER_B] = CHICKEN_TRANS_B, - [TRANSCODER_C] = CHICKEN_TRANS_C, - [TRANSCODER_EDP] = CHICKEN_TRANS_EDP, - }; - - WARN_ON(INTEL_GEN(dev_priv) < 9); - - if (WARN_ON(cpu_transcoder >= ARRAY_SIZE(regs) || - !regs[cpu_transcoder].reg)) - cpu_transcoder = TRANSCODER_A; - - return regs[cpu_transcoder]; -} - static void intel_psr_enable_source(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state) { @@ -697,8 +767,7 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp, if (dev_priv->psr.psr2_enabled && (IS_GEN(dev_priv, 9) && !IS_GEMINILAKE(dev_priv))) { - i915_reg_t reg = gen9_chicken_trans_reg(dev_priv, - cpu_transcoder); + i915_reg_t reg = CHICKEN_TRANS(cpu_transcoder); u32 chicken = I915_READ(reg); chicken |= PSR2_VSC_ENABLE_PROG_HEADER | @@ -720,19 +789,46 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp, if (INTEL_GEN(dev_priv) < 11) mask |= EDP_PSR_DEBUG_MASK_DISP_REG_WRITE; - I915_WRITE(EDP_PSR_DEBUG, mask); + I915_WRITE(EDP_PSR_DEBUG(dev_priv->psr.transcoder), mask); + + psr_irq_control(dev_priv); } static void intel_psr_enable_locked(struct drm_i915_private *dev_priv, const struct intel_crtc_state *crtc_state) { struct intel_dp *intel_dp = dev_priv->psr.dp; + u32 val; WARN_ON(dev_priv->psr.enabled); dev_priv->psr.psr2_enabled = intel_psr2_enabled(dev_priv, crtc_state); dev_priv->psr.busy_frontbuffer_bits = 0; - dev_priv->psr.pipe = to_intel_crtc(crtc_state->base.crtc)->pipe; + dev_priv->psr.pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe; + dev_priv->psr.dc3co_enabled = !!crtc_state->dc3co_exitline; + dev_priv->psr.dc3co_exit_delay = intel_get_frame_time_us(crtc_state); + dev_priv->psr.transcoder = crtc_state->cpu_transcoder; + + /* + * If a PSR error happened and the driver is reloaded, the EDP_PSR_IIR + * will still keep the error set even after the reset done in the + * irq_preinstall and irq_uninstall hooks. + * And enabling in this situation cause the screen to freeze in the + * first time that PSR HW tries to activate so lets keep PSR disabled + * to avoid any rendering problems. + */ + if (INTEL_GEN(dev_priv) >= 12) { + val = I915_READ(TRANS_PSR_IIR(dev_priv->psr.transcoder)); + val &= EDP_PSR_ERROR(0); + } else { + val = I915_READ(EDP_PSR_IIR); + val &= EDP_PSR_ERROR(dev_priv->psr.transcoder); + } + if (val) { + dev_priv->psr.sink_not_reliable = true; + DRM_DEBUG_KMS("PSR interruption error set, not enabling PSR\n"); + return; + } DRM_DEBUG_KMS("Enabling PSR%s\n", dev_priv->psr.psr2_enabled ? "2" : "1"); @@ -782,20 +878,28 @@ static void intel_psr_exit(struct drm_i915_private *dev_priv) u32 val; if (!dev_priv->psr.active) { - if (INTEL_GEN(dev_priv) >= 9) - WARN_ON(I915_READ(EDP_PSR2_CTL) & EDP_PSR2_ENABLE); - WARN_ON(I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE); + if (transcoder_has_psr2(dev_priv, dev_priv->psr.transcoder)) { + val = I915_READ(EDP_PSR2_CTL(dev_priv->psr.transcoder)); + WARN_ON(val & EDP_PSR2_ENABLE); + } + + val = I915_READ(EDP_PSR_CTL(dev_priv->psr.transcoder)); + WARN_ON(val & EDP_PSR_ENABLE); + return; } if (dev_priv->psr.psr2_enabled) { - val = I915_READ(EDP_PSR2_CTL); + tgl_disallow_dc3co_on_psr2_exit(dev_priv); + val = I915_READ(EDP_PSR2_CTL(dev_priv->psr.transcoder)); WARN_ON(!(val & EDP_PSR2_ENABLE)); - I915_WRITE(EDP_PSR2_CTL, val & ~EDP_PSR2_ENABLE); + val &= ~EDP_PSR2_ENABLE; + I915_WRITE(EDP_PSR2_CTL(dev_priv->psr.transcoder), val); } else { - val = I915_READ(EDP_PSR_CTL); + val = I915_READ(EDP_PSR_CTL(dev_priv->psr.transcoder)); WARN_ON(!(val & EDP_PSR_ENABLE)); - I915_WRITE(EDP_PSR_CTL, val & ~EDP_PSR_ENABLE); + val &= ~EDP_PSR_ENABLE; + I915_WRITE(EDP_PSR_CTL(dev_priv->psr.transcoder), val); } dev_priv->psr.active = false; } @@ -817,21 +921,24 @@ static void intel_psr_disable_locked(struct intel_dp *intel_dp) intel_psr_exit(dev_priv); if (dev_priv->psr.psr2_enabled) { - psr_status = EDP_PSR2_STATUS; + psr_status = EDP_PSR2_STATUS(dev_priv->psr.transcoder); psr_status_mask = EDP_PSR2_STATUS_STATE_MASK; } else { - psr_status = EDP_PSR_STATUS; + psr_status = EDP_PSR_STATUS(dev_priv->psr.transcoder); psr_status_mask = EDP_PSR_STATUS_STATE_MASK; } /* Wait till PSR is idle */ - if (intel_wait_for_register(&dev_priv->uncore, - psr_status, psr_status_mask, 0, 2000)) + if (intel_de_wait_for_clear(dev_priv, psr_status, + psr_status_mask, 2000)) DRM_ERROR("Timed out waiting PSR idle state\n"); /* Disable PSR on Sink */ drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, 0); + if (dev_priv->psr.psr2_enabled) + drm_dp_dpcd_writeb(&intel_dp->aux, DP_RECEIVER_ALPM_CONFIG, 0); + dev_priv->psr.enabled = false; } @@ -859,6 +966,7 @@ void intel_psr_disable(struct intel_dp *intel_dp, mutex_unlock(&dev_priv->psr.lock); cancel_work_sync(&dev_priv->psr.work); + cancel_delayed_work_sync(&dev_priv->psr.idle_work); } static void psr_force_hw_tracking_exit(struct drm_i915_private *dev_priv) @@ -946,7 +1054,7 @@ unlock: int intel_psr_wait_for_idle(const struct intel_crtc_state *new_crtc_state, u32 *out_value) { - struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc); + struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc); struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); if (!dev_priv->psr.enabled || !new_crtc_state->has_psr) @@ -963,7 +1071,8 @@ int intel_psr_wait_for_idle(const struct intel_crtc_state *new_crtc_state, * defensive enough to cover everything. */ - return __intel_wait_for_register(&dev_priv->uncore, EDP_PSR_STATUS, + return __intel_wait_for_register(&dev_priv->uncore, + EDP_PSR_STATUS(dev_priv->psr.transcoder), EDP_PSR_STATUS_STATE_MASK, EDP_PSR_STATUS_STATE_IDLE, 2, 50, out_value); @@ -979,16 +1088,16 @@ static bool __psr_wait_for_idle_locked(struct drm_i915_private *dev_priv) return false; if (dev_priv->psr.psr2_enabled) { - reg = EDP_PSR2_STATUS; + reg = EDP_PSR2_STATUS(dev_priv->psr.transcoder); mask = EDP_PSR2_STATUS_STATE_MASK; } else { - reg = EDP_PSR_STATUS; + reg = EDP_PSR_STATUS(dev_priv->psr.transcoder); mask = EDP_PSR_STATUS_STATE_MASK; } mutex_unlock(&dev_priv->psr.lock); - err = intel_wait_for_register(&dev_priv->uncore, reg, mask, 0, 50); + err = intel_de_wait_for_clear(dev_priv, reg, mask, 50); if (err) DRM_ERROR("Timed out waiting for PSR Idle for re-enable\n"); @@ -1002,7 +1111,7 @@ static int intel_psr_fastset_force(struct drm_i915_private *dev_priv) struct drm_device *dev = &dev_priv->drm; struct drm_modeset_acquire_ctx ctx; struct drm_atomic_state *state; - struct drm_crtc *crtc; + struct intel_crtc *crtc; int err; state = drm_atomic_state_alloc(dev); @@ -1013,21 +1122,18 @@ static int intel_psr_fastset_force(struct drm_i915_private *dev_priv) state->acquire_ctx = &ctx; retry: - drm_for_each_crtc(crtc, dev) { - struct drm_crtc_state *crtc_state; - struct intel_crtc_state *intel_crtc_state; + for_each_intel_crtc(dev, crtc) { + struct intel_crtc_state *crtc_state = + intel_atomic_get_crtc_state(state, crtc); - crtc_state = drm_atomic_get_crtc_state(state, crtc); if (IS_ERR(crtc_state)) { err = PTR_ERR(crtc_state); goto error; } - intel_crtc_state = to_intel_crtc_state(crtc_state); - - if (crtc_state->active && intel_crtc_state->has_psr) { + if (crtc_state->hw.active && crtc_state->has_psr) { /* Mark mode as changed to trigger a pipe->update() */ - crtc_state->mode_changed = true; + crtc_state->uapi.mode_changed = true; break; } } @@ -1067,7 +1173,13 @@ int intel_psr_debug_set(struct drm_i915_private *dev_priv, u64 val) old_mode = dev_priv->psr.debug & I915_PSR_DEBUG_MODE_MASK; dev_priv->psr.debug = val; - intel_psr_irq_control(dev_priv, dev_priv->psr.debug); + + /* + * Do it right away if it's already enabled, otherwise it will be done + * when enabling the source. + */ + if (dev_priv->psr.enabled) + psr_irq_control(dev_priv); mutex_unlock(&dev_priv->psr.lock); @@ -1159,6 +1271,44 @@ void intel_psr_invalidate(struct drm_i915_private *dev_priv, mutex_unlock(&dev_priv->psr.lock); } +/* + * When we will be completely rely on PSR2 S/W tracking in future, + * intel_psr_flush() will invalidate and flush the PSR for ORIGIN_FLIP + * event also therefore tgl_dc3co_flush() require to be changed + * accrodingly in future. + */ +static void +tgl_dc3co_flush(struct drm_i915_private *dev_priv, + unsigned int frontbuffer_bits, enum fb_op_origin origin) +{ + u32 delay; + + mutex_lock(&dev_priv->psr.lock); + + if (!dev_priv->psr.dc3co_enabled) + goto unlock; + + if (!dev_priv->psr.psr2_enabled || !dev_priv->psr.active) + goto unlock; + + /* + * At every frontbuffer flush flip event modified delay of delayed work, + * when delayed work schedules that means display has been idle. + */ + if (!(frontbuffer_bits & + INTEL_FRONTBUFFER_ALL_MASK(dev_priv->psr.pipe))) + goto unlock; + + tgl_psr2_enable_dc3co(dev_priv); + /* DC5/DC6 required idle frames = 6 */ + delay = 6 * dev_priv->psr.dc3co_exit_delay; + mod_delayed_work(system_wq, &dev_priv->psr.idle_work, + usecs_to_jiffies(delay)); + +unlock: + mutex_unlock(&dev_priv->psr.lock); +} + /** * intel_psr_flush - Flush PSR * @dev_priv: i915 device @@ -1178,8 +1328,10 @@ void intel_psr_flush(struct drm_i915_private *dev_priv, if (!CAN_PSR(dev_priv)) return; - if (origin == ORIGIN_FLIP) + if (origin == ORIGIN_FLIP) { + tgl_dc3co_flush(dev_priv, frontbuffer_bits, origin); return; + } mutex_lock(&dev_priv->psr.lock); if (!dev_priv->psr.enabled) { @@ -1208,53 +1360,111 @@ void intel_psr_flush(struct drm_i915_private *dev_priv, */ void intel_psr_init(struct drm_i915_private *dev_priv) { - u32 val; - if (!HAS_PSR(dev_priv)) return; - dev_priv->psr_mmio_base = IS_HASWELL(dev_priv) ? - HSW_EDP_PSR_BASE : BDW_EDP_PSR_BASE; - if (!dev_priv->psr.sink_support) return; + if (IS_HASWELL(dev_priv)) + /* + * HSW don't have PSR registers on the same space as transcoder + * so set this to a value that when subtract to the register + * in transcoder space results in the right offset for HSW + */ + dev_priv->hsw_psr_mmio_adjust = _SRD_CTL_EDP - _HSW_EDP_PSR_BASE; + if (i915_modparams.enable_psr == -1) if (INTEL_GEN(dev_priv) < 9 || !dev_priv->vbt.psr.enable) i915_modparams.enable_psr = 0; - /* - * If a PSR error happened and the driver is reloaded, the EDP_PSR_IIR - * will still keep the error set even after the reset done in the - * irq_preinstall and irq_uninstall hooks. - * And enabling in this situation cause the screen to freeze in the - * first time that PSR HW tries to activate so lets keep PSR disabled - * to avoid any rendering problems. - */ - val = I915_READ(EDP_PSR_IIR); - val &= EDP_PSR_ERROR(edp_psr_shift(TRANSCODER_EDP)); - if (val) { - DRM_DEBUG_KMS("PSR interruption error set\n"); - dev_priv->psr.sink_not_reliable = true; - } - /* Set link_standby x link_off defaults */ if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) /* HSW and BDW require workarounds that we don't implement. */ dev_priv->psr.link_standby = false; - else - /* For new platforms let's respect VBT back again */ + else if (INTEL_GEN(dev_priv) < 12) + /* For new platforms up to TGL let's respect VBT back again */ dev_priv->psr.link_standby = dev_priv->vbt.psr.full_link; INIT_WORK(&dev_priv->psr.work, intel_psr_work); + INIT_DELAYED_WORK(&dev_priv->psr.idle_work, tgl_dc5_idle_thread); mutex_init(&dev_priv->psr.lock); } -void intel_psr_short_pulse(struct intel_dp *intel_dp) +static int psr_get_status_and_error_status(struct intel_dp *intel_dp, + u8 *status, u8 *error_status) +{ + struct drm_dp_aux *aux = &intel_dp->aux; + int ret; + + ret = drm_dp_dpcd_readb(aux, DP_PSR_STATUS, status); + if (ret != 1) + return ret; + + ret = drm_dp_dpcd_readb(aux, DP_PSR_ERROR_STATUS, error_status); + if (ret != 1) + return ret; + + *status = *status & DP_PSR_SINK_STATE_MASK; + + return 0; +} + +static void psr_alpm_check(struct intel_dp *intel_dp) +{ + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); + struct drm_dp_aux *aux = &intel_dp->aux; + struct i915_psr *psr = &dev_priv->psr; + u8 val; + int r; + + if (!psr->psr2_enabled) + return; + + r = drm_dp_dpcd_readb(aux, DP_RECEIVER_ALPM_STATUS, &val); + if (r != 1) { + DRM_ERROR("Error reading ALPM status\n"); + return; + } + + if (val & DP_ALPM_LOCK_TIMEOUT_ERROR) { + intel_psr_disable_locked(intel_dp); + psr->sink_not_reliable = true; + DRM_DEBUG_KMS("ALPM lock timeout error, disabling PSR\n"); + + /* Clearing error */ + drm_dp_dpcd_writeb(aux, DP_RECEIVER_ALPM_STATUS, val); + } +} + +static void psr_capability_changed_check(struct intel_dp *intel_dp) { struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct i915_psr *psr = &dev_priv->psr; u8 val; + int r; + + r = drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_ESI, &val); + if (r != 1) { + DRM_ERROR("Error reading DP_PSR_ESI\n"); + return; + } + + if (val & DP_PSR_CAPS_CHANGE) { + intel_psr_disable_locked(intel_dp); + psr->sink_not_reliable = true; + DRM_DEBUG_KMS("Sink PSR capability changed, disabling PSR\n"); + + /* Clearing it */ + drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_ESI, val); + } +} + +void intel_psr_short_pulse(struct intel_dp *intel_dp) +{ + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); + struct i915_psr *psr = &dev_priv->psr; + u8 status, error_status; const u8 errors = DP_PSR_RFB_STORAGE_ERROR | DP_PSR_VSC_SDP_UNCORRECTABLE_ERROR | DP_PSR_LINK_CRC_ERROR; @@ -1267,38 +1477,34 @@ void intel_psr_short_pulse(struct intel_dp *intel_dp) if (!psr->enabled || psr->dp != intel_dp) goto exit; - if (drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_STATUS, &val) != 1) { - DRM_ERROR("PSR_STATUS dpcd read failed\n"); + if (psr_get_status_and_error_status(intel_dp, &status, &error_status)) { + DRM_ERROR("Error reading PSR status or error status\n"); goto exit; } - if ((val & DP_PSR_SINK_STATE_MASK) == DP_PSR_SINK_INTERNAL_ERROR) { - DRM_DEBUG_KMS("PSR sink internal error, disabling PSR\n"); + if (status == DP_PSR_SINK_INTERNAL_ERROR || (error_status & errors)) { intel_psr_disable_locked(intel_dp); psr->sink_not_reliable = true; } - if (drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_ERROR_STATUS, &val) != 1) { - DRM_ERROR("PSR_ERROR_STATUS dpcd read failed\n"); - goto exit; - } - - if (val & DP_PSR_RFB_STORAGE_ERROR) + if (status == DP_PSR_SINK_INTERNAL_ERROR && !error_status) + DRM_DEBUG_KMS("PSR sink internal error, disabling PSR\n"); + if (error_status & DP_PSR_RFB_STORAGE_ERROR) DRM_DEBUG_KMS("PSR RFB storage error, disabling PSR\n"); - if (val & DP_PSR_VSC_SDP_UNCORRECTABLE_ERROR) + if (error_status & DP_PSR_VSC_SDP_UNCORRECTABLE_ERROR) DRM_DEBUG_KMS("PSR VSC SDP uncorrectable error, disabling PSR\n"); - if (val & DP_PSR_LINK_CRC_ERROR) - DRM_ERROR("PSR Link CRC error, disabling PSR\n"); + if (error_status & DP_PSR_LINK_CRC_ERROR) + DRM_DEBUG_KMS("PSR Link CRC error, disabling PSR\n"); - if (val & ~errors) + if (error_status & ~errors) DRM_ERROR("PSR_ERROR_STATUS unhandled errors %x\n", - val & ~errors); - if (val & errors) { - intel_psr_disable_locked(intel_dp); - psr->sink_not_reliable = true; - } + error_status & ~errors); /* clear status register */ - drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_ERROR_STATUS, val); + drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_ERROR_STATUS, error_status); + + psr_alpm_check(intel_dp); + psr_capability_changed_check(intel_dp); + exit: mutex_unlock(&psr->lock); } @@ -1317,3 +1523,27 @@ bool intel_psr_enabled(struct intel_dp *intel_dp) return ret; } + +void intel_psr_atomic_check(struct drm_connector *connector, + struct drm_connector_state *old_state, + struct drm_connector_state *new_state) +{ + struct drm_i915_private *dev_priv = to_i915(connector->dev); + struct intel_connector *intel_connector; + struct intel_digital_port *dig_port; + struct drm_crtc_state *crtc_state; + + if (!CAN_PSR(dev_priv) || !new_state->crtc || + dev_priv->psr.initially_probed) + return; + + intel_connector = to_intel_connector(connector); + dig_port = enc_to_dig_port(intel_connector->encoder); + if (dev_priv->psr.dp != &dig_port->dp) + return; + + crtc_state = drm_atomic_get_new_crtc_state(new_state->state, + new_state->crtc); + crtc_state->mode_changed = true; + dev_priv->psr.initially_probed = true; +} |
