diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_drrs.c')
-rw-r--r-- | drivers/gpu/drm/i915/display/intel_drrs.c | 115 |
1 files changed, 71 insertions, 44 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_drrs.c b/drivers/gpu/drm/i915/display/intel_drrs.c index c1439fcb5a95..fa715b8ea310 100644 --- a/drivers/gpu/drm/i915/display/intel_drrs.c +++ b/drivers/gpu/drm/i915/display/intel_drrs.c @@ -47,17 +47,13 @@ * requested by userspace. */ -void -intel_drrs_compute_config(struct intel_dp *intel_dp, - struct intel_crtc_state *pipe_config, - int output_bpp, bool constant_n) +static bool can_enable_drrs(struct intel_connector *connector, + const struct intel_crtc_state *pipe_config) { - struct intel_connector *intel_connector = intel_dp->attached_connector; - struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); - int pixel_clock; + const struct drm_i915_private *i915 = to_i915(connector->base.dev); if (pipe_config->vrr.enable) - return; + return false; /* * DRRS and PSR can't be enable together, so giving preference to PSR @@ -66,15 +62,30 @@ intel_drrs_compute_config(struct intel_dp *intel_dp, * after intel_psr_compute_config(). */ if (pipe_config->has_psr) - return; + return false; - if (!intel_connector->panel.downclock_mode || - dev_priv->drrs.type != SEAMLESS_DRRS_SUPPORT) + return connector->panel.downclock_mode && + i915->drrs.type == SEAMLESS_DRRS_SUPPORT; +} + +void +intel_drrs_compute_config(struct intel_dp *intel_dp, + struct intel_crtc_state *pipe_config, + int output_bpp, bool constant_n) +{ + struct intel_connector *connector = intel_dp->attached_connector; + struct drm_i915_private *i915 = to_i915(connector->base.dev); + int pixel_clock; + + if (!can_enable_drrs(connector, pipe_config)) { + if (intel_cpu_transcoder_has_m2_n2(i915, pipe_config->cpu_transcoder)) + intel_zero_m_n(&pipe_config->dp_m2_n2); return; + } pipe_config->has_drrs = true; - pixel_clock = intel_connector->panel.downclock_mode->clock; + pixel_clock = connector->panel.downclock_mode->clock; if (pipe_config->splitter.enable) pixel_clock /= pipe_config->splitter.link_count; @@ -84,7 +95,42 @@ intel_drrs_compute_config(struct intel_dp *intel_dp, /* FIXME: abstract this better */ if (pipe_config->splitter.enable) - pipe_config->dp_m2_n2.gmch_m *= pipe_config->splitter.link_count; + pipe_config->dp_m2_n2.data_m *= pipe_config->splitter.link_count; +} + +static void +intel_drrs_set_refresh_rate_pipeconf(const struct intel_crtc_state *crtc_state, + enum drrs_refresh_rate_type refresh_type) +{ + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; + u32 val, bit; + + if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) + bit = PIPECONF_EDP_RR_MODE_SWITCH_VLV; + else + bit = PIPECONF_EDP_RR_MODE_SWITCH; + + val = intel_de_read(dev_priv, PIPECONF(cpu_transcoder)); + + if (refresh_type == DRRS_LOW_RR) + val |= bit; + else + val &= ~bit; + + intel_de_write(dev_priv, PIPECONF(cpu_transcoder), val); +} + +static void +intel_drrs_set_refresh_rate_m_n(const struct intel_crtc_state *crtc_state, + enum drrs_refresh_rate_type refresh_type) +{ + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); + + intel_cpu_transcoder_set_m1_n1(crtc, crtc_state->cpu_transcoder, + refresh_type == DRRS_LOW_RR ? + &crtc_state->dp_m2_n2 : &crtc_state->dp_m_n); } static void intel_drrs_set_state(struct drm_i915_private *dev_priv, @@ -120,37 +166,10 @@ static void intel_drrs_set_state(struct drm_i915_private *dev_priv, return; } - if (DISPLAY_VER(dev_priv) >= 8 && !IS_CHERRYVIEW(dev_priv)) { - switch (refresh_type) { - case DRRS_HIGH_RR: - intel_dp_set_m_n(crtc_state, M1_N1); - break; - case DRRS_LOW_RR: - intel_dp_set_m_n(crtc_state, M2_N2); - break; - case DRRS_MAX_RR: - default: - drm_err(&dev_priv->drm, - "Unsupported refreshrate type\n"); - } - } else if (DISPLAY_VER(dev_priv) > 6) { - i915_reg_t reg = PIPECONF(crtc_state->cpu_transcoder); - u32 val; - - val = intel_de_read(dev_priv, reg); - if (refresh_type == DRRS_LOW_RR) { - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) - val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV; - else - val |= PIPECONF_EDP_RR_MODE_SWITCH; - } else { - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) - val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV; - else - val &= ~PIPECONF_EDP_RR_MODE_SWITCH; - } - intel_de_write(dev_priv, reg, val); - } + if (DISPLAY_VER(dev_priv) >= 8 && !IS_CHERRYVIEW(dev_priv)) + intel_drrs_set_refresh_rate_m_n(crtc_state, refresh_type); + else if (DISPLAY_VER(dev_priv) > 6) + intel_drrs_set_refresh_rate_pipeconf(crtc_state, refresh_type); dev_priv->drrs.refresh_rate_type = refresh_type; @@ -405,6 +424,7 @@ intel_drrs_init(struct intel_connector *connector, struct drm_display_mode *fixed_mode) { struct drm_i915_private *dev_priv = to_i915(connector->base.dev); + struct intel_encoder *encoder = connector->encoder; struct drm_display_mode *downclock_mode = NULL; INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_drrs_downclock_work); @@ -416,6 +436,13 @@ intel_drrs_init(struct intel_connector *connector, return NULL; } + if ((DISPLAY_VER(dev_priv) < 8 && !HAS_GMCH(dev_priv)) && + encoder->port != PORT_A) { + drm_dbg_kms(&dev_priv->drm, + "DRRS only supported on eDP port A\n"); + return NULL; + } + if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { drm_dbg_kms(&dev_priv->drm, "VBT doesn't support DRRS\n"); return NULL; |