diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_vblank.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_vblank.c | 110 |
1 files changed, 76 insertions, 34 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_vblank.c b/drivers/gpu/drm/i915/display/intel_vblank.c index 0b7f2134e441..139fa5deba80 100644 --- a/drivers/gpu/drm/i915/display/intel_vblank.c +++ b/drivers/gpu/drm/i915/display/intel_vblank.c @@ -3,6 +3,8 @@ * Copyright © 2022-2023 Intel Corporation */ +#include <drm/drm_vblank.h> + #include "i915_drv.h" #include "i915_reg.h" #include "intel_color.h" @@ -193,7 +195,6 @@ static u32 __intel_get_crtc_scanline_from_timestamp(struct intel_crtc *crtc) int intel_crtc_scanline_offset(const struct intel_crtc_state *crtc_state) { struct intel_display *display = to_intel_display(crtc_state); - struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); /* * The scanline counter increments at the leading edge of hsync. @@ -221,12 +222,15 @@ int intel_crtc_scanline_offset(const struct intel_crtc_state *crtc_state) * However if queried just before the start of vblank we'll get an * answer that's slightly in the future. */ - if (DISPLAY_VER(display) == 2) - return -1; - else if (HAS_DDI(i915) && intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) - return 2; - else + if (DISPLAY_VER(display) >= 20 || display->platform.battlemage) return 1; + else if (DISPLAY_VER(display) >= 9 || + display->platform.broadwell || display->platform.haswell) + return intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) ? 2 : 1; + else if (DISPLAY_VER(display) >= 3) + return 1; + else + return -1; } /* @@ -325,14 +329,13 @@ static bool i915_get_crtc_scanoutpos(struct drm_crtc *_crtc, const struct drm_display_mode *mode) { struct intel_display *display = to_intel_display(_crtc->dev); - struct drm_i915_private *dev_priv = to_i915(display->drm); struct intel_crtc *crtc = to_intel_crtc(_crtc); enum pipe pipe = crtc->pipe; int position; int vbl_start, vbl_end, hsync_start, htotal, vtotal; unsigned long irqflags; bool use_scanline_counter = DISPLAY_VER(display) >= 5 || - IS_G4X(dev_priv) || DISPLAY_VER(display) == 2 || + display->platform.g4x || DISPLAY_VER(display) == 2 || crtc->mode_flags & I915_MODE_FLAG_USE_SCANLINE_COUNTER; if (drm_WARN_ON(display->drm, !mode->crtc_clock)) { @@ -369,7 +372,7 @@ static bool i915_get_crtc_scanoutpos(struct drm_crtc *_crtc, /* * Already exiting vblank? If so, shift our position - * so it looks like we're already apporaching the full + * so it looks like we're already approaching the full * vblank end. This should make the generated timestamp * more or less match when the active portion will start. */ @@ -507,6 +510,23 @@ void intel_wait_for_pipe_scanline_moving(struct intel_crtc *crtc) wait_for_pipe_scanline_moving(crtc, true); } +static void intel_crtc_active_timings(struct drm_display_mode *mode, + int *vmax_vblank_start, + const struct intel_crtc_state *crtc_state, + bool vrr_enable) +{ + drm_mode_init(mode, &crtc_state->hw.adjusted_mode); + *vmax_vblank_start = 0; + + if (!vrr_enable) + return; + + mode->crtc_vtotal = intel_vrr_vmax_vtotal(crtc_state); + mode->crtc_vblank_end = intel_vrr_vmax_vtotal(crtc_state); + mode->crtc_vblank_start = intel_vrr_vmin_vblank_start(crtc_state); + *vmax_vblank_start = intel_vrr_vmax_vblank_start(crtc_state); +} + void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state, bool vrr_enable) { @@ -517,19 +537,13 @@ void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state, int vmax_vblank_start = 0; unsigned long irqflags; - drm_mode_init(&adjusted_mode, &crtc_state->hw.adjusted_mode); - - if (vrr_enable) { - drm_WARN_ON(display->drm, - (mode_flags & I915_MODE_FLAG_VRR) == 0); + intel_crtc_active_timings(&adjusted_mode, &vmax_vblank_start, + crtc_state, vrr_enable); - adjusted_mode.crtc_vtotal = crtc_state->vrr.vmax; - adjusted_mode.crtc_vblank_end = crtc_state->vrr.vmax; - adjusted_mode.crtc_vblank_start = intel_vrr_vmin_vblank_start(crtc_state); - vmax_vblank_start = intel_vrr_vmax_vblank_start(crtc_state); - } else { + if (vrr_enable) + drm_WARN_ON(display->drm, (mode_flags & I915_MODE_FLAG_VRR) == 0); + else mode_flags &= ~I915_MODE_FLAG_VRR; - } /* * Belts and suspenders locking to guarantee everyone sees 100% @@ -597,30 +611,55 @@ int intel_mode_vtotal(const struct drm_display_mode *mode) return vtotal; } +int intel_mode_vblank_delay(const struct drm_display_mode *mode) +{ + return intel_mode_vblank_start(mode) - intel_mode_vdisplay(mode); +} + +static const struct intel_crtc_state * +pre_commit_crtc_state(const struct intel_crtc_state *old_crtc_state, + const struct intel_crtc_state *new_crtc_state) +{ + /* + * During fastsets/etc. the transcoder is still + * running with the old timings at this point. + */ + if (intel_crtc_needs_modeset(new_crtc_state)) + return new_crtc_state; + else + return old_crtc_state; +} + +const struct intel_crtc_state * +intel_pre_commit_crtc_state(struct intel_atomic_state *state, + struct intel_crtc *crtc) +{ + const struct intel_crtc_state *old_crtc_state = + intel_atomic_get_old_crtc_state(state, crtc); + const struct intel_crtc_state *new_crtc_state = + intel_atomic_get_new_crtc_state(state, crtc); + + return pre_commit_crtc_state(old_crtc_state, new_crtc_state); +} + void intel_vblank_evade_init(const struct intel_crtc_state *old_crtc_state, const struct intel_crtc_state *new_crtc_state, struct intel_vblank_evade_ctx *evade) { + struct intel_display *display = to_intel_display(new_crtc_state); struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc); - struct drm_i915_private *i915 = to_i915(crtc->base.dev); const struct intel_crtc_state *crtc_state; const struct drm_display_mode *adjusted_mode; + int vblank_delay; evade->crtc = crtc; - evade->need_vlv_dsi_wa = (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) && + evade->need_vlv_dsi_wa = (display->platform.valleyview || + display->platform.cherryview) && intel_crtc_has_type(new_crtc_state, INTEL_OUTPUT_DSI); - /* - * During fastsets/etc. the transcoder is still - * running with the old timings at this point. - * - * TODO: maybe just use the active timings here? - */ - if (intel_crtc_needs_modeset(new_crtc_state)) - crtc_state = new_crtc_state; - else - crtc_state = old_crtc_state; + /* TODO: maybe just use the active timings here? */ + crtc_state = pre_commit_crtc_state(old_crtc_state, new_crtc_state); adjusted_mode = &crtc_state->hw.adjusted_mode; @@ -633,8 +672,12 @@ void intel_vblank_evade_init(const struct intel_crtc_state *old_crtc_state, evade->vblank_start = intel_vrr_vmin_vblank_start(crtc_state); else evade->vblank_start = intel_vrr_vmax_vblank_start(crtc_state); + + vblank_delay = intel_vrr_vblank_delay(crtc_state); } else { evade->vblank_start = intel_mode_vblank_start(adjusted_mode); + + vblank_delay = intel_mode_vblank_delay(adjusted_mode); } /* FIXME needs to be calibrated sensibly */ @@ -652,8 +695,7 @@ void intel_vblank_evade_init(const struct intel_crtc_state *old_crtc_state, */ if (intel_color_uses_dsb(new_crtc_state) || new_crtc_state->update_m_n || new_crtc_state->update_lrr) - evade->min -= intel_mode_vblank_start(adjusted_mode) - - intel_mode_vdisplay(adjusted_mode); + evade->min -= vblank_delay; } /* must be called with vblank interrupt already enabled! */ |