diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_vrr.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_vrr.c | 260 |
1 files changed, 207 insertions, 53 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c index 5d905f932cb4..70088e355055 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.c +++ b/drivers/gpu/drm/i915/display/intel_vrr.c @@ -4,16 +4,20 @@ * */ -#include "i915_drv.h" #include "i915_reg.h" #include "intel_de.h" #include "intel_display_types.h" #include "intel_vrr.h" +#include "intel_vrr_regs.h" +#include "intel_dp.h" + +#define FIXED_POINT_PRECISION 100 +#define CMRR_PRECISION_TOLERANCE 10 bool intel_vrr_is_capable(struct intel_connector *connector) { + struct intel_display *display = to_intel_display(connector); const struct drm_display_info *info = &connector->base.display_info; - struct drm_i915_private *i915 = to_i915(connector->base.dev); struct intel_dp *intel_dp; /* @@ -38,7 +42,7 @@ bool intel_vrr_is_capable(struct intel_connector *connector) return false; } - return HAS_VRR(i915) && + return HAS_VRR(display) && info->monitor_range.max_vfreq - info->monitor_range.min_vfreq > 10; } @@ -51,6 +55,11 @@ bool intel_vrr_is_in_range(struct intel_connector *connector, int vrefresh) vrefresh <= info->monitor_range.max_vfreq; } +bool intel_vrr_possible(const struct intel_crtc_state *crtc_state) +{ + return crtc_state->vrr.flipline; +} + void intel_vrr_check_modeset(struct intel_atomic_state *state) { @@ -84,10 +93,9 @@ intel_vrr_check_modeset(struct intel_atomic_state *state) */ static int intel_vrr_vblank_exit_length(const struct intel_crtc_state *crtc_state) { - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *i915 = to_i915(crtc->base.dev); + struct intel_display *display = to_intel_display(crtc_state); - if (DISPLAY_VER(i915) >= 13) + if (DISPLAY_VER(display) >= 13) return crtc_state->vrr.guardband; else /* The hw imposes the extra scanline before frame start */ @@ -105,18 +113,73 @@ int intel_vrr_vmax_vblank_start(const struct intel_crtc_state *crtc_state) return crtc_state->vrr.vmax - intel_vrr_vblank_exit_length(crtc_state); } +static bool +is_cmrr_frac_required(struct intel_crtc_state *crtc_state) +{ + struct intel_display *display = to_intel_display(crtc_state); + int calculated_refresh_k, actual_refresh_k, pixel_clock_per_line; + struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; + + if (!HAS_CMRR(display)) + return false; + + actual_refresh_k = + drm_mode_vrefresh(adjusted_mode) * FIXED_POINT_PRECISION; + pixel_clock_per_line = + adjusted_mode->crtc_clock * 1000 / adjusted_mode->crtc_htotal; + calculated_refresh_k = + pixel_clock_per_line * FIXED_POINT_PRECISION / adjusted_mode->crtc_vtotal; + + if ((actual_refresh_k - calculated_refresh_k) < CMRR_PRECISION_TOLERANCE) + return false; + + return true; +} + +static unsigned int +cmrr_get_vtotal(struct intel_crtc_state *crtc_state, bool video_mode_required) +{ + int multiplier_m = 1, multiplier_n = 1, vtotal, desired_refresh_rate; + u64 adjusted_pixel_rate; + struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; + + desired_refresh_rate = drm_mode_vrefresh(adjusted_mode); + + if (video_mode_required) { + multiplier_m = 1001; + multiplier_n = 1000; + } + + crtc_state->cmrr.cmrr_n = mul_u32_u32(desired_refresh_rate * adjusted_mode->crtc_htotal, + multiplier_n); + vtotal = DIV_ROUND_UP_ULL(mul_u32_u32(adjusted_mode->crtc_clock * 1000, multiplier_n), + crtc_state->cmrr.cmrr_n); + adjusted_pixel_rate = mul_u32_u32(adjusted_mode->crtc_clock * 1000, multiplier_m); + crtc_state->cmrr.cmrr_m = do_div(adjusted_pixel_rate, crtc_state->cmrr.cmrr_n); + + return vtotal; +} + void intel_vrr_compute_config(struct intel_crtc_state *crtc_state, struct drm_connector_state *conn_state) { - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *i915 = to_i915(crtc->base.dev); + struct intel_display *display = to_intel_display(crtc_state); struct intel_connector *connector = to_intel_connector(conn_state->connector); + struct intel_dp *intel_dp = intel_attached_dp(connector); + bool is_edp = intel_dp_is_edp(intel_dp); struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; const struct drm_display_info *info = &connector->base.display_info; int vmin, vmax; + /* + * FIXME all joined pipes share the same transcoder. + * Need to account for that during VRR toggle/push/etc. + */ + if (crtc_state->joiner_pipes) + return; + if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) return; @@ -125,7 +188,7 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state, if (!crtc_state->vrr.in_range) return; - if (HAS_LRR(i915)) + if (HAS_LRR(display)) crtc_state->update_lrr = true; vmin = DIV_ROUND_UP(adjusted_mode->crtc_clock * 1000, @@ -150,10 +213,47 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state, crtc_state->vrr.flipline = crtc_state->vrr.vmin + 1; /* - * For XE_LPD+, we use guardband and pipeline override - * is deprecated. + * When panel is VRR capable and userspace has + * not enabled adaptive sync mode then Fixed Average + * Vtotal mode should be enabled. */ - if (DISPLAY_VER(i915) >= 13) { + if (crtc_state->uapi.vrr_enabled) { + crtc_state->vrr.enable = true; + crtc_state->mode_flags |= I915_MODE_FLAG_VRR; + } else if (is_cmrr_frac_required(crtc_state) && is_edp) { + crtc_state->vrr.enable = true; + crtc_state->cmrr.enable = true; + /* + * TODO: Compute precise target refresh rate to determine + * if video_mode_required should be true. Currently set to + * false due to uncertainty about the precise target + * refresh Rate. + */ + crtc_state->vrr.vmax = cmrr_get_vtotal(crtc_state, false); + crtc_state->vrr.vmin = crtc_state->vrr.vmax; + crtc_state->vrr.flipline = crtc_state->vrr.vmin; + crtc_state->mode_flags |= I915_MODE_FLAG_VRR; + } + + if (intel_dp->as_sdp_supported && crtc_state->vrr.enable) { + crtc_state->vrr.vsync_start = + (crtc_state->hw.adjusted_mode.crtc_vtotal - + crtc_state->hw.adjusted_mode.vsync_start); + crtc_state->vrr.vsync_end = + (crtc_state->hw.adjusted_mode.crtc_vtotal - + crtc_state->hw.adjusted_mode.vsync_end); + } +} + +void intel_vrr_compute_config_late(struct intel_crtc_state *crtc_state) +{ + struct intel_display *display = to_intel_display(crtc_state); + const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; + + if (!intel_vrr_possible(crtc_state)) + return; + + if (DISPLAY_VER(display) >= 13) { crtc_state->vrr.guardband = crtc_state->vrr.vmin + 1 - adjusted_mode->crtc_vblank_start; } else { @@ -161,18 +261,13 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state, min(255, crtc_state->vrr.vmin - adjusted_mode->crtc_vblank_start - crtc_state->framestart_delay - 1); } - - if (crtc_state->uapi.vrr_enabled) { - crtc_state->vrr.enable = true; - crtc_state->mode_flags |= I915_MODE_FLAG_VRR; - } } static u32 trans_vrr_ctl(const struct intel_crtc_state *crtc_state) { - struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); + struct intel_display *display = to_intel_display(crtc_state); - if (DISPLAY_VER(i915) >= 13) + if (DISPLAY_VER(display) >= 13) return VRR_CTL_IGN_MAX_SHIFT | VRR_CTL_FLIP_LINE_EN | XELPD_VRR_CTL_VRR_GUARDBAND(crtc_state->vrr.guardband); else @@ -183,93 +278,138 @@ static u32 trans_vrr_ctl(const struct intel_crtc_state *crtc_state) void intel_vrr_set_transcoder_timings(const struct intel_crtc_state *crtc_state) { - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); + struct intel_display *display = to_intel_display(crtc_state); enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; /* - * TRANS_SET_CONTEXT_LATENCY with VRR enabled - * requires this chicken bit on ADL/DG2. + * This bit seems to have two meanings depending on the platform: + * TGL: generate VRR "safe window" for DSB vblank waits + * ADL/DG2: make TRANS_SET_CONTEXT_LATENCY effective with VRR */ - if (DISPLAY_VER(dev_priv) == 13) - intel_de_rmw(dev_priv, CHICKEN_TRANS(cpu_transcoder), + if (IS_DISPLAY_VER(display, 12, 13)) + intel_de_rmw(display, CHICKEN_TRANS(display, cpu_transcoder), 0, PIPE_VBLANK_WITH_DELAY); - if (!crtc_state->vrr.flipline) { - intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder), 0); + if (!intel_vrr_possible(crtc_state)) { + intel_de_write(display, + TRANS_VRR_CTL(display, cpu_transcoder), 0); return; } - intel_de_write(dev_priv, TRANS_VRR_VMIN(cpu_transcoder), crtc_state->vrr.vmin - 1); - intel_de_write(dev_priv, TRANS_VRR_VMAX(cpu_transcoder), crtc_state->vrr.vmax - 1); - intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder), trans_vrr_ctl(crtc_state)); - intel_de_write(dev_priv, TRANS_VRR_FLIPLINE(cpu_transcoder), crtc_state->vrr.flipline - 1); + if (crtc_state->cmrr.enable) { + intel_de_write(display, TRANS_CMRR_M_HI(display, cpu_transcoder), + upper_32_bits(crtc_state->cmrr.cmrr_m)); + intel_de_write(display, TRANS_CMRR_M_LO(display, cpu_transcoder), + lower_32_bits(crtc_state->cmrr.cmrr_m)); + intel_de_write(display, TRANS_CMRR_N_HI(display, cpu_transcoder), + upper_32_bits(crtc_state->cmrr.cmrr_n)); + intel_de_write(display, TRANS_CMRR_N_LO(display, cpu_transcoder), + lower_32_bits(crtc_state->cmrr.cmrr_n)); + } + + intel_de_write(display, TRANS_VRR_VMIN(display, cpu_transcoder), + crtc_state->vrr.vmin - 1); + intel_de_write(display, TRANS_VRR_VMAX(display, cpu_transcoder), + crtc_state->vrr.vmax - 1); + intel_de_write(display, TRANS_VRR_CTL(display, cpu_transcoder), + trans_vrr_ctl(crtc_state)); + intel_de_write(display, TRANS_VRR_FLIPLINE(display, cpu_transcoder), + crtc_state->vrr.flipline - 1); } void intel_vrr_send_push(const struct intel_crtc_state *crtc_state) { - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + struct intel_display *display = to_intel_display(crtc_state); enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; if (!crtc_state->vrr.enable) return; - intel_de_write(dev_priv, TRANS_PUSH(cpu_transcoder), + intel_de_write(display, TRANS_PUSH(display, cpu_transcoder), TRANS_PUSH_EN | TRANS_PUSH_SEND); } bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state) { - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + struct intel_display *display = to_intel_display(crtc_state); enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; if (!crtc_state->vrr.enable) return false; - return intel_de_read(dev_priv, TRANS_PUSH(cpu_transcoder)) & TRANS_PUSH_SEND; + return intel_de_read(display, TRANS_PUSH(display, cpu_transcoder)) & TRANS_PUSH_SEND; } void intel_vrr_enable(const struct intel_crtc_state *crtc_state) { - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); + struct intel_display *display = to_intel_display(crtc_state); enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; if (!crtc_state->vrr.enable) return; - intel_de_write(dev_priv, TRANS_PUSH(cpu_transcoder), TRANS_PUSH_EN); - intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder), - VRR_CTL_VRR_ENABLE | trans_vrr_ctl(crtc_state)); + intel_de_write(display, TRANS_PUSH(display, cpu_transcoder), + TRANS_PUSH_EN); + + if (HAS_AS_SDP(display)) + intel_de_write(display, + TRANS_VRR_VSYNC(display, cpu_transcoder), + VRR_VSYNC_END(crtc_state->vrr.vsync_end) | + VRR_VSYNC_START(crtc_state->vrr.vsync_start)); + + if (crtc_state->cmrr.enable) { + intel_de_write(display, TRANS_VRR_CTL(display, cpu_transcoder), + VRR_CTL_VRR_ENABLE | VRR_CTL_CMRR_ENABLE | + trans_vrr_ctl(crtc_state)); + } else { + intel_de_write(display, TRANS_VRR_CTL(display, cpu_transcoder), + VRR_CTL_VRR_ENABLE | trans_vrr_ctl(crtc_state)); + } } void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state) { - struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + struct intel_display *display = to_intel_display(old_crtc_state); enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder; if (!old_crtc_state->vrr.enable) return; - intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder), + intel_de_write(display, TRANS_VRR_CTL(display, cpu_transcoder), trans_vrr_ctl(old_crtc_state)); - intel_de_wait_for_clear(dev_priv, TRANS_VRR_STATUS(cpu_transcoder), + intel_de_wait_for_clear(display, + TRANS_VRR_STATUS(display, cpu_transcoder), VRR_STATUS_VRR_EN_LIVE, 1000); - intel_de_write(dev_priv, TRANS_PUSH(cpu_transcoder), 0); + intel_de_write(display, TRANS_PUSH(display, cpu_transcoder), 0); + + if (HAS_AS_SDP(display)) + intel_de_write(display, + TRANS_VRR_VSYNC(display, cpu_transcoder), 0); } void intel_vrr_get_config(struct intel_crtc_state *crtc_state) { - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); + struct intel_display *display = to_intel_display(crtc_state); enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; - u32 trans_vrr_ctl; + u32 trans_vrr_ctl, trans_vrr_vsync; - trans_vrr_ctl = intel_de_read(dev_priv, TRANS_VRR_CTL(cpu_transcoder)); + trans_vrr_ctl = intel_de_read(display, + TRANS_VRR_CTL(display, cpu_transcoder)); crtc_state->vrr.enable = trans_vrr_ctl & VRR_CTL_VRR_ENABLE; + if (HAS_CMRR(display)) + crtc_state->cmrr.enable = (trans_vrr_ctl & VRR_CTL_CMRR_ENABLE); + + if (crtc_state->cmrr.enable) { + crtc_state->cmrr.cmrr_n = + intel_de_read64_2x32(display, TRANS_CMRR_N_LO(display, cpu_transcoder), + TRANS_CMRR_N_HI(display, cpu_transcoder)); + crtc_state->cmrr.cmrr_m = + intel_de_read64_2x32(display, TRANS_CMRR_M_LO(display, cpu_transcoder), + TRANS_CMRR_M_HI(display, cpu_transcoder)); + } - if (DISPLAY_VER(dev_priv) >= 13) + if (DISPLAY_VER(display) >= 13) crtc_state->vrr.guardband = REG_FIELD_GET(XELPD_VRR_CTL_VRR_GUARDBAND_MASK, trans_vrr_ctl); else @@ -278,11 +418,25 @@ void intel_vrr_get_config(struct intel_crtc_state *crtc_state) REG_FIELD_GET(VRR_CTL_PIPELINE_FULL_MASK, trans_vrr_ctl); if (trans_vrr_ctl & VRR_CTL_FLIP_LINE_EN) { - crtc_state->vrr.flipline = intel_de_read(dev_priv, TRANS_VRR_FLIPLINE(cpu_transcoder)) + 1; - crtc_state->vrr.vmax = intel_de_read(dev_priv, TRANS_VRR_VMAX(cpu_transcoder)) + 1; - crtc_state->vrr.vmin = intel_de_read(dev_priv, TRANS_VRR_VMIN(cpu_transcoder)) + 1; + crtc_state->vrr.flipline = intel_de_read(display, + TRANS_VRR_FLIPLINE(display, cpu_transcoder)) + 1; + crtc_state->vrr.vmax = intel_de_read(display, + TRANS_VRR_VMAX(display, cpu_transcoder)) + 1; + crtc_state->vrr.vmin = intel_de_read(display, + TRANS_VRR_VMIN(display, cpu_transcoder)) + 1; } - if (crtc_state->vrr.enable) + if (crtc_state->vrr.enable) { crtc_state->mode_flags |= I915_MODE_FLAG_VRR; + + if (HAS_AS_SDP(display)) { + trans_vrr_vsync = + intel_de_read(display, + TRANS_VRR_VSYNC(display, cpu_transcoder)); + crtc_state->vrr.vsync_start = + REG_FIELD_GET(VRR_VSYNC_START_MASK, trans_vrr_vsync); + crtc_state->vrr.vsync_end = + REG_FIELD_GET(VRR_VSYNC_END_MASK, trans_vrr_vsync); + } + } } |