diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_vrr.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_vrr.c | 182 |
1 files changed, 148 insertions, 34 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c index 894ee97b3e1b..6430da25957d 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.c +++ b/drivers/gpu/drm/i915/display/intel_vrr.c @@ -9,8 +9,12 @@ #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) { const struct drm_display_info *info = &connector->base.display_info; @@ -106,6 +110,53 @@ 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) +{ + int calculated_refresh_k, actual_refresh_k, pixel_clock_per_line; + struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; + struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); + + if (!HAS_CMRR(i915)) + 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; + long long 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) @@ -115,6 +166,7 @@ intel_vrr_compute_config(struct intel_crtc_state *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; @@ -123,7 +175,7 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state, * FIXME all joined pipes share the same transcoder. * Need to account for that during VRR toggle/push/etc. */ - if (crtc_state->bigjoiner_pipes) + if (crtc_state->joiner_pipes) return; if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) @@ -159,6 +211,39 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state, crtc_state->vrr.flipline = crtc_state->vrr.vmin + 1; /* + * When panel is VRR capable and userspace has + * not enabled adaptive sync mode then Fixed Average + * Vtotal mode should be enabled. + */ + 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(intel_dp) && + 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); + } + + /* * For XE_LPD+, we use guardband and pipeline override * is deprecated. */ @@ -170,19 +255,6 @@ 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; - if (intel_dp_as_sdp_supported(intel_dp)) { - 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); - } - } } static u32 trans_vrr_ctl(const struct intel_crtc_state *crtc_state) @@ -213,14 +285,30 @@ void intel_vrr_set_transcoder_timings(const struct intel_crtc_state *crtc_state) 0, PIPE_VBLANK_WITH_DELAY); if (!crtc_state->vrr.flipline) { - intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder), 0); + intel_de_write(dev_priv, + TRANS_VRR_CTL(dev_priv, 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(dev_priv, TRANS_CMRR_M_HI(dev_priv, cpu_transcoder), + upper_32_bits(crtc_state->cmrr.cmrr_m)); + intel_de_write(dev_priv, TRANS_CMRR_M_LO(dev_priv, cpu_transcoder), + lower_32_bits(crtc_state->cmrr.cmrr_m)); + intel_de_write(dev_priv, TRANS_CMRR_N_HI(dev_priv, cpu_transcoder), + upper_32_bits(crtc_state->cmrr.cmrr_n)); + intel_de_write(dev_priv, TRANS_CMRR_N_LO(dev_priv, cpu_transcoder), + lower_32_bits(crtc_state->cmrr.cmrr_n)); + } + + intel_de_write(dev_priv, TRANS_VRR_VMIN(dev_priv, cpu_transcoder), + crtc_state->vrr.vmin - 1); + intel_de_write(dev_priv, TRANS_VRR_VMAX(dev_priv, cpu_transcoder), + crtc_state->vrr.vmax - 1); + intel_de_write(dev_priv, TRANS_VRR_CTL(dev_priv, cpu_transcoder), + trans_vrr_ctl(crtc_state)); + intel_de_write(dev_priv, TRANS_VRR_FLIPLINE(dev_priv, cpu_transcoder), + crtc_state->vrr.flipline - 1); } void intel_vrr_send_push(const struct intel_crtc_state *crtc_state) @@ -232,7 +320,7 @@ void intel_vrr_send_push(const struct intel_crtc_state *crtc_state) if (!crtc_state->vrr.enable) return; - intel_de_write(dev_priv, TRANS_PUSH(cpu_transcoder), + intel_de_write(dev_priv, TRANS_PUSH(dev_priv, cpu_transcoder), TRANS_PUSH_EN | TRANS_PUSH_SEND); } @@ -245,7 +333,7 @@ bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state) if (!crtc_state->vrr.enable) return false; - return intel_de_read(dev_priv, TRANS_PUSH(cpu_transcoder)) & TRANS_PUSH_SEND; + return intel_de_read(dev_priv, TRANS_PUSH(dev_priv, cpu_transcoder)) & TRANS_PUSH_SEND; } void intel_vrr_enable(const struct intel_crtc_state *crtc_state) @@ -256,15 +344,23 @@ void intel_vrr_enable(const struct intel_crtc_state *crtc_state) if (!crtc_state->vrr.enable) return; - intel_de_write(dev_priv, TRANS_PUSH(cpu_transcoder), TRANS_PUSH_EN); + intel_de_write(dev_priv, TRANS_PUSH(dev_priv, cpu_transcoder), + TRANS_PUSH_EN); if (HAS_AS_SDP(dev_priv)) - intel_de_write(dev_priv, TRANS_VRR_VSYNC(cpu_transcoder), + intel_de_write(dev_priv, + TRANS_VRR_VSYNC(dev_priv, cpu_transcoder), VRR_VSYNC_END(crtc_state->vrr.vsync_end) | VRR_VSYNC_START(crtc_state->vrr.vsync_start)); - intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder), - VRR_CTL_VRR_ENABLE | trans_vrr_ctl(crtc_state)); + if (crtc_state->cmrr.enable) { + intel_de_write(dev_priv, TRANS_VRR_CTL(dev_priv, cpu_transcoder), + VRR_CTL_VRR_ENABLE | VRR_CTL_CMRR_ENABLE | + trans_vrr_ctl(crtc_state)); + } else { + intel_de_write(dev_priv, TRANS_VRR_CTL(dev_priv, cpu_transcoder), + VRR_CTL_VRR_ENABLE | trans_vrr_ctl(crtc_state)); + } } void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state) @@ -276,14 +372,16 @@ void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state) if (!old_crtc_state->vrr.enable) return; - intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder), + intel_de_write(dev_priv, TRANS_VRR_CTL(dev_priv, 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(dev_priv, + TRANS_VRR_STATUS(dev_priv, cpu_transcoder), VRR_STATUS_VRR_EN_LIVE, 1000); - intel_de_write(dev_priv, TRANS_PUSH(cpu_transcoder), 0); + intel_de_write(dev_priv, TRANS_PUSH(dev_priv, cpu_transcoder), 0); if (HAS_AS_SDP(dev_priv)) - intel_de_write(dev_priv, TRANS_VRR_VSYNC(cpu_transcoder), 0); + intel_de_write(dev_priv, + TRANS_VRR_VSYNC(dev_priv, cpu_transcoder), 0); } void intel_vrr_get_config(struct intel_crtc_state *crtc_state) @@ -292,9 +390,21 @@ void intel_vrr_get_config(struct intel_crtc_state *crtc_state) enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 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(dev_priv, + TRANS_VRR_CTL(dev_priv, cpu_transcoder)); crtc_state->vrr.enable = trans_vrr_ctl & VRR_CTL_VRR_ENABLE; + if (HAS_CMRR(dev_priv)) + 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(dev_priv, TRANS_CMRR_N_LO(dev_priv, cpu_transcoder), + TRANS_CMRR_N_HI(dev_priv, cpu_transcoder)); + crtc_state->cmrr.cmrr_m = + intel_de_read64_2x32(dev_priv, TRANS_CMRR_M_LO(dev_priv, cpu_transcoder), + TRANS_CMRR_M_HI(dev_priv, cpu_transcoder)); + } if (DISPLAY_VER(dev_priv) >= 13) crtc_state->vrr.guardband = @@ -305,9 +415,12 @@ 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(dev_priv, + TRANS_VRR_FLIPLINE(dev_priv, cpu_transcoder)) + 1; + crtc_state->vrr.vmax = intel_de_read(dev_priv, + TRANS_VRR_VMAX(dev_priv, cpu_transcoder)) + 1; + crtc_state->vrr.vmin = intel_de_read(dev_priv, + TRANS_VRR_VMIN(dev_priv, cpu_transcoder)) + 1; } if (crtc_state->vrr.enable) { @@ -315,7 +428,8 @@ void intel_vrr_get_config(struct intel_crtc_state *crtc_state) if (HAS_AS_SDP(dev_priv)) { trans_vrr_vsync = - intel_de_read(dev_priv, TRANS_VRR_VSYNC(cpu_transcoder)); + intel_de_read(dev_priv, + TRANS_VRR_VSYNC(dev_priv, cpu_transcoder)); crtc_state->vrr.vsync_start = REG_FIELD_GET(VRR_VSYNC_START_MASK, trans_vrr_vsync); crtc_state->vrr.vsync_end = |