EDP specific DRRS implementation is removed to implement a
generic DRRS stack extentable accross the supportable encoders.

Signed-off-by: Ramalingam C <ramalinga...@intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c      |  110 ---------
 drivers/gpu/drm/i915/i915_drv.h          |   22 --
 drivers/gpu/drm/i915/intel_ddi.c         |    2 -
 drivers/gpu/drm/i915/intel_dp.c          |  392 ------------------------------
 drivers/gpu/drm/i915/intel_drv.h         |    5 -
 drivers/gpu/drm/i915/intel_frontbuffer.c |    2 -
 6 files changed, 533 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c 
b/drivers/gpu/drm/i915/i915_debugfs.c
index c49fe2a..7dbf170 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2962,115 +2962,6 @@ static int i915_ddb_info(struct seq_file *m, void 
*unused)
        return 0;
 }
 
-static void drrs_status_per_crtc(struct seq_file *m,
-               struct drm_device *dev, struct intel_crtc *intel_crtc)
-{
-       struct intel_encoder *intel_encoder;
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       struct i915_drrs *drrs = &dev_priv->drrs;
-       int vrefresh = 0;
-
-       for_each_encoder_on_crtc(dev, &intel_crtc->base, intel_encoder) {
-               /* Encoder connected on this CRTC */
-               switch (intel_encoder->type) {
-               case INTEL_OUTPUT_EDP:
-                       seq_puts(m, "eDP:\n");
-                       break;
-               case INTEL_OUTPUT_DSI:
-                       seq_puts(m, "DSI:\n");
-                       break;
-               case INTEL_OUTPUT_HDMI:
-                       seq_puts(m, "HDMI:\n");
-                       break;
-               case INTEL_OUTPUT_DISPLAYPORT:
-                       seq_puts(m, "DP:\n");
-                       break;
-               default:
-                       seq_printf(m, "Other encoder (id=%d).\n",
-                                               intel_encoder->type);
-                       return;
-               }
-       }
-
-       if (dev_priv->vbt.drrs_type == STATIC_DRRS_SUPPORT)
-               seq_puts(m, "\tVBT: DRRS_type: Static");
-       else if (dev_priv->vbt.drrs_type == SEAMLESS_DRRS_SUPPORT)
-               seq_puts(m, "\tVBT: DRRS_type: Seamless");
-       else if (dev_priv->vbt.drrs_type == DRRS_NOT_SUPPORTED)
-               seq_puts(m, "\tVBT: DRRS_type: None");
-       else
-               seq_puts(m, "\tVBT: DRRS_type: FIXME: Unrecognized Value");
-
-       seq_puts(m, "\n\n");
-
-       if (to_intel_crtc_state(intel_crtc->base.state)->has_drrs) {
-               struct intel_panel *panel;
-
-               mutex_lock(&drrs->mutex);
-               /* DRRS Supported */
-               seq_puts(m, "\tDRRS Supported: Yes\n");
-
-               /* disable_drrs() will make drrs->dp NULL */
-               if (!drrs->dp) {
-                       seq_puts(m, "Idleness DRRS: Disabled");
-                       mutex_unlock(&drrs->mutex);
-                       return;
-               }
-
-               panel = &drrs->dp->attached_connector->panel;
-               seq_printf(m, "\t\tBusy_frontbuffer_bits: 0x%X",
-                                       drrs->busy_frontbuffer_bits);
-
-               seq_puts(m, "\n\t\t");
-               if (drrs->refresh_rate_type == DRRS_HIGH_RR) {
-                       seq_puts(m, "DRRS_State: DRRS_HIGH_RR\n");
-                       vrefresh = panel->fixed_mode->vrefresh;
-               } else if (drrs->refresh_rate_type == DRRS_LOW_RR) {
-                       seq_puts(m, "DRRS_State: DRRS_LOW_RR\n");
-                       vrefresh = panel->downclock_mode->vrefresh;
-               } else {
-                       seq_printf(m, "DRRS_State: Unknown(%d)\n",
-                                               drrs->refresh_rate_type);
-                       mutex_unlock(&drrs->mutex);
-                       return;
-               }
-               seq_printf(m, "\t\tVrefresh: %d", vrefresh);
-
-               seq_puts(m, "\n\t\t");
-               mutex_unlock(&drrs->mutex);
-       } else {
-               /* DRRS not supported. Print the VBT parameter*/
-               seq_puts(m, "\tDRRS Supported : No");
-       }
-       seq_puts(m, "\n");
-}
-
-static int i915_drrs_status(struct seq_file *m, void *unused)
-{
-       struct drm_info_node *node = m->private;
-       struct drm_device *dev = node->minor->dev;
-       struct intel_crtc *intel_crtc;
-       int active_crtc_cnt = 0;
-
-       for_each_intel_crtc(dev, intel_crtc) {
-               drm_modeset_lock(&intel_crtc->base.mutex, NULL);
-
-               if (intel_crtc->base.state->active) {
-                       active_crtc_cnt++;
-                       seq_printf(m, "\nCRTC %d:  ", active_crtc_cnt);
-
-                       drrs_status_per_crtc(m, dev, intel_crtc);
-               }
-
-               drm_modeset_unlock(&intel_crtc->base.mutex);
-       }
-
-       if (!active_crtc_cnt)
-               seq_puts(m, "No active crtc found\n");
-
-       return 0;
-}
-
 struct pipe_crc_info {
        const char *name;
        struct drm_device *dev;
@@ -5048,7 +4939,6 @@ static const struct drm_info_list i915_debugfs_list[] = {
        {"i915_wa_registers", i915_wa_registers, 0},
        {"i915_ddb_info", i915_ddb_info, 0},
        {"i915_sseu_status", i915_sseu_status, 0},
-       {"i915_drrs_status", i915_drrs_status, 0},
        {"i915_rps_boost_info", i915_rps_boost_info, 0},
 };
 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 491ef0c..922dd68 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -930,33 +930,12 @@ struct i915_fbc {
        } no_fbc_reason;
 };
 
-/**
- * HIGH_RR is the highest eDP panel refresh rate read from EDID
- * LOW_RR is the lowest eDP panel refresh rate found from EDID
- * parsing for same resolution.
- */
-enum drrs_refresh_rate_type {
-       DRRS_HIGH_RR,
-       DRRS_LOW_RR,
-       DRRS_MAX_RR, /* RR count */
-};
-
 enum drrs_support_type {
        DRRS_NOT_SUPPORTED = 0,
        STATIC_DRRS_SUPPORT = 1,
        SEAMLESS_DRRS_SUPPORT = 2
 };
 
-struct intel_dp;
-struct i915_drrs {
-       struct mutex mutex;
-       struct delayed_work work;
-       struct intel_dp *dp;
-       unsigned busy_frontbuffer_bits;
-       enum drrs_refresh_rate_type refresh_rate_type;
-       enum drrs_support_type type;
-};
-
 struct i915_psr {
        struct mutex lock;
        bool sink_support;
@@ -1718,7 +1697,6 @@ struct drm_i915_private {
 
        struct i915_hotplug hotplug;
        struct i915_fbc fbc;
-       struct i915_drrs drrs;
        struct intel_opregion opregion;
        struct intel_vbt_data vbt;
 
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 31b29e8..75afbd7 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2012,7 +2012,6 @@ static void intel_enable_ddi(struct intel_encoder 
*intel_encoder)
 
                intel_edp_backlight_on(intel_dp);
                intel_psr_enable(intel_dp);
-               intel_edp_drrs_enable(intel_dp);
        }
 
        if (intel_crtc->config->has_audio) {
@@ -2038,7 +2037,6 @@ static void intel_disable_ddi(struct intel_encoder 
*intel_encoder)
        if (type == INTEL_OUTPUT_EDP) {
                struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
 
-               intel_edp_drrs_disable(intel_dp);
                intel_psr_disable(intel_dp);
                intel_edp_backlight_off(intel_dp);
        }
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index f52eef1..738e98e 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1483,15 +1483,6 @@ found:
                               pipe_config->port_clock,
                               &pipe_config->dp_m_n);
 
-       if (intel_connector->panel.downclock_mode != NULL &&
-               dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) {
-                       pipe_config->has_drrs = true;
-                       intel_link_compute_m_n(bpp, lane_count,
-                               intel_connector->panel.downclock_mode->clock,
-                               pipe_config->port_clock,
-                               &pipe_config->dp_m2_n2);
-       }
-
        if (IS_SKYLAKE(dev) && is_edp(intel_dp))
                skl_edp_set_pll_config(pipe_config, common_rates[clock]);
        else if (IS_BROXTON(dev))
@@ -5254,387 +5245,6 @@ intel_dp_init_panel_power_sequencer_registers(struct 
drm_device *dev,
                      I915_READ(pp_div_reg));
 }
 
-/**
- * intel_dp_set_drrs_state - program registers for RR switch to take effect
- * @dev: DRM device
- * @refresh_rate: RR to be programmed
- *
- * This function gets called when refresh rate (RR) has to be changed from
- * one frequency to another. Switches can be between high and low RR
- * supported by the panel or to any other RR based on media playback (in
- * this case, RR value needs to be passed from user space).
- *
- * The caller of this function needs to take a lock on dev_priv->drrs.
- */
-static void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate)
-{
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       struct intel_encoder *encoder;
-       struct intel_digital_port *dig_port = NULL;
-       struct intel_dp *intel_dp = dev_priv->drrs.dp;
-       struct intel_crtc_state *config = NULL;
-       struct intel_crtc *intel_crtc = NULL;
-       u32 reg, val;
-       enum drrs_refresh_rate_type index = DRRS_HIGH_RR;
-
-       if (refresh_rate <= 0) {
-               DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n");
-               return;
-       }
-
-       if (intel_dp == NULL) {
-               DRM_DEBUG_KMS("DRRS not supported.\n");
-               return;
-       }
-
-       /*
-        * FIXME: This needs proper synchronization with psr state for some
-        * platforms that cannot have PSR and DRRS enabled at the same time.
-        */
-
-       dig_port = dp_to_dig_port(intel_dp);
-       encoder = &dig_port->base;
-       intel_crtc = to_intel_crtc(encoder->base.crtc);
-
-       if (!intel_crtc) {
-               DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n");
-               return;
-       }
-
-       config = intel_crtc->config;
-
-       if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) {
-               DRM_DEBUG_KMS("Only Seamless DRRS supported.\n");
-               return;
-       }
-
-       if (intel_dp->attached_connector->panel.downclock_mode->vrefresh ==
-                       refresh_rate)
-               index = DRRS_LOW_RR;
-
-       if (index == dev_priv->drrs.refresh_rate_type) {
-               DRM_DEBUG_KMS(
-                       "DRRS requested for previously set RR...ignoring\n");
-               return;
-       }
-
-       if (!intel_crtc->active) {
-               DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n");
-               return;
-       }
-
-       if (INTEL_INFO(dev)->gen >= 8 && !IS_CHERRYVIEW(dev)) {
-               switch (index) {
-               case DRRS_HIGH_RR:
-                       intel_dp_set_m_n(intel_crtc, M1_N1);
-                       break;
-               case DRRS_LOW_RR:
-                       intel_dp_set_m_n(intel_crtc, M2_N2);
-                       break;
-               case DRRS_MAX_RR:
-               default:
-                       DRM_ERROR("Unsupported refreshrate type\n");
-               }
-       } else if (INTEL_INFO(dev)->gen > 6) {
-               reg = PIPECONF(intel_crtc->config->cpu_transcoder);
-               val = I915_READ(reg);
-
-               if (index > DRRS_HIGH_RR) {
-                       if (IS_VALLEYVIEW(dev))
-                               val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV;
-                       else
-                               val |= PIPECONF_EDP_RR_MODE_SWITCH;
-               } else {
-                       if (IS_VALLEYVIEW(dev))
-                               val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV;
-                       else
-                               val &= ~PIPECONF_EDP_RR_MODE_SWITCH;
-               }
-               I915_WRITE(reg, val);
-       }
-
-       dev_priv->drrs.refresh_rate_type = index;
-
-       DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate);
-}
-
-/**
- * intel_edp_drrs_enable - init drrs struct if supported
- * @intel_dp: DP struct
- *
- * Initializes frontbuffer_bits and drrs.dp
- */
-void intel_edp_drrs_enable(struct intel_dp *intel_dp)
-{
-       struct drm_device *dev = intel_dp_to_dev(intel_dp);
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-       struct drm_crtc *crtc = dig_port->base.base.crtc;
-       struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-
-       if (!intel_crtc->config->has_drrs) {
-               DRM_DEBUG_KMS("Panel doesn't support DRRS\n");
-               return;
-       }
-
-       mutex_lock(&dev_priv->drrs.mutex);
-       if (WARN_ON(dev_priv->drrs.dp)) {
-               DRM_ERROR("DRRS already enabled\n");
-               goto unlock;
-       }
-
-       dev_priv->drrs.busy_frontbuffer_bits = 0;
-
-       dev_priv->drrs.dp = intel_dp;
-
-unlock:
-       mutex_unlock(&dev_priv->drrs.mutex);
-}
-
-/**
- * intel_edp_drrs_disable - Disable DRRS
- * @intel_dp: DP struct
- *
- */
-void intel_edp_drrs_disable(struct intel_dp *intel_dp)
-{
-       struct drm_device *dev = intel_dp_to_dev(intel_dp);
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-       struct drm_crtc *crtc = dig_port->base.base.crtc;
-       struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-
-       if (!intel_crtc->config->has_drrs)
-               return;
-
-       mutex_lock(&dev_priv->drrs.mutex);
-       if (!dev_priv->drrs.dp) {
-               mutex_unlock(&dev_priv->drrs.mutex);
-               return;
-       }
-
-       if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR)
-               intel_dp_set_drrs_state(dev_priv->dev,
-                       intel_dp->attached_connector->panel.
-                       fixed_mode->vrefresh);
-
-       dev_priv->drrs.dp = NULL;
-       mutex_unlock(&dev_priv->drrs.mutex);
-
-       cancel_delayed_work_sync(&dev_priv->drrs.work);
-}
-
-static void intel_edp_drrs_downclock_work(struct work_struct *work)
-{
-       struct drm_i915_private *dev_priv =
-               container_of(work, typeof(*dev_priv), drrs.work.work);
-       struct intel_dp *intel_dp;
-
-       mutex_lock(&dev_priv->drrs.mutex);
-
-       intel_dp = dev_priv->drrs.dp;
-
-       if (!intel_dp)
-               goto unlock;
-
-       /*
-        * The delayed work can race with an invalidate hence we need to
-        * recheck.
-        */
-
-       if (dev_priv->drrs.busy_frontbuffer_bits)
-               goto unlock;
-
-       if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR)
-               intel_dp_set_drrs_state(dev_priv->dev,
-                       intel_dp->attached_connector->panel.
-                       downclock_mode->vrefresh);
-
-unlock:
-       mutex_unlock(&dev_priv->drrs.mutex);
-}
-
-/**
- * intel_edp_drrs_invalidate - Disable Idleness DRRS
- * @dev: DRM device
- * @frontbuffer_bits: frontbuffer plane tracking bits
- *
- * This function gets called everytime rendering on the given planes start.
- * Hence DRRS needs to be Upclocked, i.e. (LOW_RR -> HIGH_RR).
- *
- * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits.
- */
-void intel_edp_drrs_invalidate(struct drm_device *dev,
-               unsigned frontbuffer_bits)
-{
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       struct drm_crtc *crtc;
-       enum pipe pipe;
-
-       if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED)
-               return;
-
-       cancel_delayed_work(&dev_priv->drrs.work);
-
-       mutex_lock(&dev_priv->drrs.mutex);
-       if (!dev_priv->drrs.dp) {
-               mutex_unlock(&dev_priv->drrs.mutex);
-               return;
-       }
-
-       crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc;
-       pipe = to_intel_crtc(crtc)->pipe;
-
-       /* invalidate means busy screen hence upclock */
-       if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) {
-               intel_dp_set_drrs_state(dev_priv->dev,
-                               dev_priv->drrs.dp->attached_connector->panel.
-                               fixed_mode->vrefresh);
-       }
-
-       frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe);
-
-       dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits;
-       mutex_unlock(&dev_priv->drrs.mutex);
-}
-
-/**
- * intel_edp_drrs_flush - Restart Idleness DRRS
- * @dev: DRM device
- * @frontbuffer_bits: frontbuffer plane tracking bits
- *
- * This function gets called every time rendering on the given planes has
- * completed or flip on a crtc is completed. So DRRS should be upclocked
- * (LOW_RR -> HIGH_RR). And also Idleness detection should be started again,
- * if no other planes are dirty.
- *
- * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits.
- */
-void intel_edp_drrs_flush(struct drm_device *dev,
-               unsigned frontbuffer_bits)
-{
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       struct drm_crtc *crtc;
-       enum pipe pipe;
-
-       if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED)
-               return;
-
-       cancel_delayed_work(&dev_priv->drrs.work);
-
-       mutex_lock(&dev_priv->drrs.mutex);
-       if (!dev_priv->drrs.dp) {
-               mutex_unlock(&dev_priv->drrs.mutex);
-               return;
-       }
-
-       crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc;
-       pipe = to_intel_crtc(crtc)->pipe;
-       dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits;
-
-       /* flush means busy screen hence upclock */
-       if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR)
-               intel_dp_set_drrs_state(dev_priv->dev,
-                               dev_priv->drrs.dp->attached_connector->panel.
-                               fixed_mode->vrefresh);
-
-       /*
-        * flush also means no more activity hence schedule downclock, if all
-        * other fbs are quiescent too
-        */
-       if (!dev_priv->drrs.busy_frontbuffer_bits)
-               schedule_delayed_work(&dev_priv->drrs.work,
-                               msecs_to_jiffies(1000));
-       mutex_unlock(&dev_priv->drrs.mutex);
-}
-
-/**
- * DOC: Display Refresh Rate Switching (DRRS)
- *
- * Display Refresh Rate Switching (DRRS) is a power conservation feature
- * which enables swtching between low and high refresh rates,
- * dynamically, based on the usage scenario. This feature is applicable
- * for internal panels.
- *
- * Indication that the panel supports DRRS is given by the panel EDID, which
- * would list multiple refresh rates for one resolution.
- *
- * DRRS is of 2 types - static and seamless.
- * Static DRRS involves changing refresh rate (RR) by doing a full modeset
- * (may appear as a blink on screen) and is used in dock-undock scenario.
- * Seamless DRRS involves changing RR without any visual effect to the user
- * and can be used during normal system usage. This is done by programming
- * certain registers.
- *
- * Support for static/seamless DRRS may be indicated in the VBT based on
- * inputs from the panel spec.
- *
- * DRRS saves power by switching to low RR based on usage scenarios.
- *
- * eDP DRRS:-
- *        The implementation is based on frontbuffer tracking implementation.
- * When there is a disturbance on the screen triggered by user activity or a
- * periodic system activity, DRRS is disabled (RR is changed to high RR).
- * When there is no movement on screen, after a timeout of 1 second, a switch
- * to low RR is made.
- *        For integration with frontbuffer tracking code,
- * intel_edp_drrs_invalidate() and intel_edp_drrs_flush() are called.
- *
- * DRRS can be further extended to support other internal panels and also
- * the scenario of video playback wherein RR is set based on the rate
- * requested by userspace.
- */
-
-/**
- * intel_dp_drrs_init - Init basic DRRS work and mutex.
- * @intel_connector: eDP connector
- * @fixed_mode: preferred mode of panel
- *
- * This function is  called only once at driver load to initialize basic
- * DRRS stuff.
- *
- * Returns:
- * Downclock mode if panel supports it, else return NULL.
- * DRRS support is determined by the presence of downclock mode (apart
- * from VBT setting).
- */
-static struct drm_display_mode *
-intel_dp_drrs_init(struct intel_connector *intel_connector,
-               struct drm_display_mode *fixed_mode)
-{
-       struct drm_connector *connector = &intel_connector->base;
-       struct drm_device *dev = connector->dev;
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       struct drm_display_mode *downclock_mode = NULL;
-
-       INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work);
-       mutex_init(&dev_priv->drrs.mutex);
-
-       if (INTEL_INFO(dev)->gen <= 6) {
-               DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n");
-               return NULL;
-       }
-
-       if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) {
-               DRM_DEBUG_KMS("VBT doesn't support DRRS\n");
-               return NULL;
-       }
-
-       downclock_mode = intel_find_panel_downclock
-                                       (dev, fixed_mode, connector);
-
-       if (!downclock_mode) {
-               DRM_DEBUG_KMS("Downclock mode is not found. DRRS not 
supported\n");
-               return NULL;
-       }
-
-       dev_priv->drrs.type = dev_priv->vbt.drrs_type;
-
-       dev_priv->drrs.refresh_rate_type = DRRS_HIGH_RR;
-       DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n");
-       return downclock_mode;
-}
-
 static bool intel_edp_init_connector(struct intel_dp *intel_dp,
                                     struct intel_connector *intel_connector)
 {
@@ -5696,8 +5306,6 @@ static bool intel_edp_init_connector(struct intel_dp 
*intel_dp,
        list_for_each_entry(scan, &connector->probed_modes, head) {
                if ((scan->type & DRM_MODE_TYPE_PREFERRED)) {
                        fixed_mode = drm_mode_duplicate(dev, scan);
-                       downclock_mode = intel_dp_drrs_init(
-                                               intel_connector, fixed_mode);
                        break;
                }
        }
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index bcafefc..e2f534a 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1198,11 +1198,6 @@ void intel_dp_hot_plug(struct intel_encoder 
*intel_encoder);
 void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv);
 uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes);
 void intel_plane_destroy(struct drm_plane *plane);
-void intel_edp_drrs_enable(struct intel_dp *intel_dp);
-void intel_edp_drrs_disable(struct intel_dp *intel_dp);
-void intel_edp_drrs_invalidate(struct drm_device *dev,
-               unsigned frontbuffer_bits);
-void intel_edp_drrs_flush(struct drm_device *dev, unsigned frontbuffer_bits);
 
 /* intel_dp_mst.c */
 int intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int 
conn_id);
diff --git a/drivers/gpu/drm/i915/intel_frontbuffer.c 
b/drivers/gpu/drm/i915/intel_frontbuffer.c
index 57095f5..249d0b3 100644
--- a/drivers/gpu/drm/i915/intel_frontbuffer.c
+++ b/drivers/gpu/drm/i915/intel_frontbuffer.c
@@ -154,7 +154,6 @@ void intel_fb_obj_invalidate(struct drm_i915_gem_object 
*obj,
        intel_mark_fb_busy(dev, obj->frontbuffer_bits, ring);
 
        intel_psr_invalidate(dev, obj->frontbuffer_bits);
-       intel_edp_drrs_invalidate(dev, obj->frontbuffer_bits);
        intel_fbc_invalidate(dev_priv, obj->frontbuffer_bits, origin);
 }
 
@@ -181,7 +180,6 @@ void intel_frontbuffer_flush(struct drm_device *dev,
 
        intel_mark_fb_busy(dev, frontbuffer_bits, NULL);
 
-       intel_edp_drrs_flush(dev, frontbuffer_bits);
        intel_psr_flush(dev, frontbuffer_bits);
        intel_fbc_flush(dev_priv, frontbuffer_bits);
 }
-- 
1.7.9.5

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