| Message ID | 1395981902-21606-5-git-send-email-vandana.kannan@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, 28 Mar 2014, Vandana Kannan <vandana.kannan@intel.com> wrote: > Adding support to detect display idleness by tracking page flip from > user space. Switch to low refresh rate is triggered after 2 seconds of > idleness. The delay is configurable. If there is a page flip or call to > update the plane, then high refresh rate is applied. > The feature is not used in dual-display mode. > > v2: Chris Wilson's review comments incorporated. > Modify idleness detection implementation to make it similar to the > implementation of intel_update_fbc/intel_disable_fbc > > v3: Internal review comments incorporated > Add NULL pointer check in intel_disable_drrs. > Add drrs calls in i9xx_crtc_enable/disable and valleyview_crtc_enable. > > v4: Jani's review comments incorporated. > Change in sequence in intel_update_drrs. Comment modified to remove details > of update param. Modified DRRS idleness interval to a module parameter. > > v5: Chris's review comments incorporated. > Initialize connector in idleness detection init. Modifications made to > use only intel_connector in i915_drrs and derive intel_dp when required. > Added a function drrs_fini to cleanup DRRS work. > > v6: Internal review comments. Removed check for primary enabled, which is > a redundant check, in the case of clone mode. Added a flag to track > dual-display configuration. Remove print statement for "cancel DRR work" > and print "DRRS not supported" only once. > > v7: As per internal review comments, removing calls to update/disable drrs > from sprite update path. For sprite, all drrs related updates would be > taken care of with calls to crtc page flip itself. This will have to be > revisited later if flip infrastructure changes for sprite. > > v8: Incorporated Jani's review comments. Added space after the periods in the > module param description. Changes around drrs-fini to remove seamless DRRS > check. > > Signed-off-by: Vandana Kannan <vandana.kannan@intel.com> > Signed-off-by: Pradeep Bhat <pradeep.bhat@intel.com> > Cc: Jani Nikula <jani.nikula@linux.intel.com> > --- > drivers/gpu/drm/i915/i915_drv.h | 7 ++ > drivers/gpu/drm/i915/i915_params.c | 8 ++ > drivers/gpu/drm/i915/intel_display.c | 16 ++++ > drivers/gpu/drm/i915/intel_dp.c | 22 +++++- > drivers/gpu/drm/i915/intel_drv.h | 5 +- > drivers/gpu/drm/i915/intel_pm.c | 138 ++++++++++++++++++++++++++++++++++ > 6 files changed, 193 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h > index 1c9d5cf..c4e9b37 100644 > --- a/drivers/gpu/drm/i915/i915_drv.h > +++ b/drivers/gpu/drm/i915/i915_drv.h > @@ -796,6 +796,12 @@ struct i915_fbc { > > struct i915_drrs { > struct intel_connector *connector; > + bool is_clone; > + struct intel_drrs_work { > + struct delayed_work work; > + struct drm_crtc *crtc; > + int interval; > + } *drrs_work; > }; > > struct i915_psr { > @@ -2092,6 +2098,7 @@ struct i915_params { > int enable_ips; > int invert_brightness; > int enable_cmd_parser; > + int drrs_interval; > /* leave bools at the end to not create holes */ > bool enable_hangcheck; > bool fastboot; > diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c > index d1d7980..05ca0a0 100644 > --- a/drivers/gpu/drm/i915/i915_params.c > +++ b/drivers/gpu/drm/i915/i915_params.c > @@ -47,6 +47,7 @@ struct i915_params i915 __read_mostly = { > .invert_brightness = 0, > .disable_display = 0, > .enable_cmd_parser = 0, > + .drrs_interval = 2000, > }; > > module_param_named(modeset, i915.modeset, int, 0400); > @@ -152,3 +153,10 @@ MODULE_PARM_DESC(disable_display, "Disable display (default: false)"); > module_param_named(enable_cmd_parser, i915.enable_cmd_parser, int, 0600); > MODULE_PARM_DESC(enable_cmd_parser, > "Enable command parsing (1=enabled, 0=disabled [default])"); > + > +module_param_named(drrs_interval, i915.drrs_interval, int, 0600); > +MODULE_PARM_DESC(drrs_interval, > + "DRRS idleness detection interval (default: 2000 ms). " > + "If this field is set to 0, then seamless DRRS feature " > + "based on idleness detection is disabled. " > + "The interval is to be set in milliseconds."); > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c > index 7e4ea8d..c309561 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -2542,6 +2542,7 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y, > > mutex_lock(&dev->struct_mutex); > intel_update_fbc(dev); > + intel_update_drrs(dev); > intel_edp_psr_update(dev); > mutex_unlock(&dev->struct_mutex); > > @@ -3708,6 +3709,7 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc) > > mutex_lock(&dev->struct_mutex); > intel_update_fbc(dev); > + intel_update_drrs(dev); > mutex_unlock(&dev->struct_mutex); > > for_each_encoder_on_crtc(dev, crtc, encoder) > @@ -3751,6 +3753,7 @@ static void haswell_crtc_enable_planes(struct drm_crtc *crtc) > > mutex_lock(&dev->struct_mutex); > intel_update_fbc(dev); > + intel_update_drrs(dev); > mutex_unlock(&dev->struct_mutex); > > drm_vblank_on(dev, pipe); > @@ -3948,6 +3951,7 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc) > > mutex_lock(&dev->struct_mutex); > intel_update_fbc(dev); > + intel_update_drrs(dev); > mutex_unlock(&dev->struct_mutex); > } > > @@ -3995,6 +3999,7 @@ static void haswell_crtc_disable(struct drm_crtc *crtc) > > mutex_lock(&dev->struct_mutex); > intel_update_fbc(dev); > + intel_update_drrs(dev); > mutex_unlock(&dev->struct_mutex); > } > > @@ -4391,6 +4396,7 @@ static void valleyview_crtc_enable(struct drm_crtc *crtc) > intel_crtc_update_cursor(crtc, true); > > intel_update_fbc(dev); > + intel_update_drrs(dev); > > for_each_encoder_on_crtc(dev, crtc, encoder) > encoder->enable(encoder); > @@ -4438,6 +4444,7 @@ static void i9xx_crtc_enable(struct drm_crtc *crtc) > intel_crtc_dpms_overlay(intel_crtc, true); > > intel_update_fbc(dev); > + intel_update_drrs(dev); > > for_each_encoder_on_crtc(dev, crtc, encoder) > encoder->enable(encoder); > @@ -4505,6 +4512,7 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc) > intel_update_watermarks(crtc); > > intel_update_fbc(dev); > + intel_update_drrs(dev); > } > > static void i9xx_crtc_off(struct drm_crtc *crtc) > @@ -8508,6 +8516,10 @@ static void intel_unpin_work_fn(struct work_struct *__work) > drm_gem_object_unreference(&work->pending_flip_obj->base); > drm_gem_object_unreference(&work->old_fb_obj->base); > > + /* disable current DRRS work scheduled and restart > + * to push work by another x seconds > + */ > + intel_update_drrs(dev); > intel_update_fbc(dev); > mutex_unlock(&dev->struct_mutex); > > @@ -8966,6 +8978,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, > goto cleanup_pending; > > intel_disable_fbc(dev); > + intel_disable_drrs(dev); > intel_mark_fb_busy(obj, NULL); > mutex_unlock(&dev->struct_mutex); > > @@ -11338,6 +11351,7 @@ void intel_modeset_init(struct drm_device *dev) > > /* Just in case the BIOS is doing something questionable. */ > intel_disable_fbc(dev); > + intel_disable_drrs(dev); > > mutex_lock(&dev->mode_config.mutex); > intel_modeset_setup_hw_state(dev, false); > @@ -11803,6 +11817,8 @@ void intel_modeset_cleanup(struct drm_device *dev) > > intel_disable_fbc(dev); > > + intel_disable_drrs(dev); > + > intel_disable_gt_powersave(dev); > > ironlake_teardown_rc6(dev); > diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c > index 9640df1..4f0281a 100644 > --- a/drivers/gpu/drm/i915/intel_dp.c > +++ b/drivers/gpu/drm/i915/intel_dp.c > @@ -3351,16 +3351,33 @@ intel_dp_connector_destroy(struct drm_connector *connector) > kfree(connector); > } > > +static void > +intel_dp_drrs_fini(struct drm_i915_private *dev_priv) > +{ > + if (cancel_delayed_work_sync(&dev_priv->drrs.drrs_work->work)) { > + kfree(dev_priv->drrs.drrs_work); > + dev_priv->drrs.drrs_work = NULL; > + dev_priv->drrs.connector = NULL; > + } > +} > + > void intel_dp_encoder_destroy(struct drm_encoder *encoder) > { > struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); > struct intel_dp *intel_dp = &intel_dig_port->dp; > struct drm_device *dev = intel_dp_to_dev(intel_dp); > + struct drm_i915_private *dev_priv = dev->dev_private; > > drm_dp_aux_unregister_i2c_bus(&intel_dp->aux); > drm_encoder_cleanup(encoder); > if (is_edp(intel_dp)) { > cancel_delayed_work_sync(&intel_dp->panel_vdd_work); > + > + if (dev_priv->drrs.connector && dev_priv->drrs.drrs_work && > + intel_dp == enc_to_intel_dp( > + &dev_priv->drrs.connector->encoder->base)) > + intel_dp_drrs_fini(dev_priv); > + > mutex_lock(&dev->mode_config.mutex); > edp_panel_vdd_off_sync(intel_dp); > mutex_unlock(&dev->mode_config.mutex); > @@ -3751,7 +3768,7 @@ intel_dp_drrs_init(struct intel_digital_port *intel_dig_port, > > if (downclock_mode != NULL && > dev_priv->vbt.drrs_type == SEAMLESS_DRRS_SUPPORT) { > - dev_priv->drrs.connector = intel_connector; > + intel_init_drrs_idleness_detection(dev, intel_connector); > > mutex_init(&intel_dp->drrs_state.mutex); > > @@ -3759,7 +3776,8 @@ intel_dp_drrs_init(struct intel_digital_port *intel_dig_port, > > intel_dp->drrs_state.refresh_rate_type = DRRS_HIGH_RR; > DRM_INFO("seamless DRRS supported for eDP panel.\n"); > - } > + } else > + DRM_INFO("DRRS not supported\n"); > > return downclock_mode; > } > diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h > index 46fc8b3..570cc47 100644 > --- a/drivers/gpu/drm/i915/intel_drv.h > +++ b/drivers/gpu/drm/i915/intel_drv.h > @@ -930,7 +930,10 @@ void intel_runtime_pm_put(struct drm_i915_private *dev_priv); > void intel_init_runtime_pm(struct drm_i915_private *dev_priv); > void intel_fini_runtime_pm(struct drm_i915_private *dev_priv); > void ilk_wm_get_hw_state(struct drm_device *dev); > - > +void intel_init_drrs_idleness_detection(struct drm_device *dev, > + struct intel_connector *connector); > +void intel_update_drrs(struct drm_device *dev); > +void intel_disable_drrs(struct drm_device *dev); > > /* intel_sdvo.c */ > bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg, bool is_sdvob); > diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c > index fd68f93..6a78fca 100644 > --- a/drivers/gpu/drm/i915/intel_pm.c > +++ b/drivers/gpu/drm/i915/intel_pm.c > @@ -621,6 +621,144 @@ out_disable: > i915_gem_stolen_cleanup_compression(dev); > } > > +static void intel_drrs_work_fn(struct work_struct *__work) > +{ > + struct intel_drrs_work *work = > + container_of(to_delayed_work(__work), > + struct intel_drrs_work, work); > + struct drm_device *dev = work->crtc->dev; > + struct drm_i915_private *dev_priv = dev->dev_private; > + > + /* Double check if the dual-display mode is active. */ > + if (dev_priv->drrs.is_clone) > + return; > + > + intel_dp_set_drrs_state(work->crtc->dev, > + dev_priv->drrs.connector->panel.downclock_mode->vrefresh); > +} > + > +static void intel_cancel_drrs_work(struct drm_i915_private *dev_priv) > +{ > + if (dev_priv->drrs.drrs_work == NULL) > + return; > + > + cancel_delayed_work_sync(&dev_priv->drrs.drrs_work->work); > +} > + > +static void intel_enable_drrs(struct drm_crtc *crtc) > +{ > + struct drm_device *dev = crtc->dev; > + struct drm_i915_private *dev_priv = dev->dev_private; > + struct intel_dp *intel_dp = NULL; > + > + intel_dp = enc_to_intel_dp(&dev_priv->drrs.connector->encoder->base); > + > + if (intel_dp == NULL) > + return; > + > + intel_cancel_drrs_work(dev_priv); > + > + if (intel_dp->drrs_state.refresh_rate_type != DRRS_LOW_RR) { > + dev_priv->drrs.drrs_work->crtc = crtc; > + > + /* Delay the actual enabling to let pageflipping cease and the > + * display to settle before starting DRRS > + */ > + schedule_delayed_work(&dev_priv->drrs.drrs_work->work, > + msecs_to_jiffies(dev_priv->drrs.drrs_work->interval)); > + } > +} > + > +void intel_disable_drrs(struct drm_device *dev) > +{ > + struct drm_i915_private *dev_priv = dev->dev_private; > + struct intel_dp *intel_dp = NULL; > + > + if (dev_priv->drrs.connector == NULL) > + return; > + > + intel_dp = enc_to_intel_dp(&dev_priv->drrs.connector->encoder->base); > + > + if (intel_dp == NULL) > + return; > + > + /* as part of disable DRRS, reset refresh rate to HIGH_RR */ > + if (intel_dp->drrs_state.refresh_rate_type == DRRS_LOW_RR) { > + intel_cancel_drrs_work(dev_priv); > + intel_dp_set_drrs_state(dev, > + dev_priv->drrs.connector->panel.fixed_mode->vrefresh); > + } > +} > + > +/** > + * intel_update_drrs - enable/disable DRRS as needed > + * @dev: the drm_device > +*/ > +void intel_update_drrs(struct drm_device *dev) > +{ > + struct drm_crtc *crtc = NULL, *tmp_crtc; > + struct drm_i915_private *dev_priv = dev->dev_private; > + > + /* if drrs.connector is NULL, then drrs_init did not get called. > + * which means DRRS is not supported. > + */ > + if (dev_priv->drrs.connector == NULL) > + return; > + > + if (dev_priv->drrs.connector->panel.downclock_mode == NULL) > + return; > + > + list_for_each_entry(tmp_crtc, &dev->mode_config.crtc_list, head) { > + if (tmp_crtc != NULL && intel_crtc_active(tmp_crtc)) { I don't think it's possible for tmp_crtc to be NULL here. > + if (crtc) { > + DRM_DEBUG_KMS( > + "more than one pipe active, disabling DRRS\n"); > + dev_priv->drrs.is_clone = true; > + intel_disable_drrs(dev); > + return; > + } > + crtc = tmp_crtc; > + } > + } > + > + if (crtc == NULL) { > + DRM_DEBUG_KMS("DRRS: crtc not initialized\n"); > + return; > + } > + > + dev_priv->drrs.is_clone = false; > + intel_disable_drrs(dev); > + > + /* re-enable idleness detection */ > + intel_enable_drrs(crtc); > +} > + > +void intel_init_drrs_idleness_detection(struct drm_device *dev, > + struct intel_connector *connector) > +{ > + struct intel_drrs_work *work; > + struct drm_i915_private *dev_priv = dev->dev_private; > + > + if (i915.drrs_interval == 0) { > + DRM_INFO("DRRS disable by flag\n"); You've added the module parameter with 0600 permission, i.e. the user can modify it runtime. What happens if the user boots with i915.drrs_interval=0 but later sets it to a meaningful value? I think it will be a useful feature to be able to have drrs disabled by default at boot, to be enabled later. > + return; > + } > + > + work = kzalloc(sizeof(struct intel_drrs_work), GFP_KERNEL); > + if (!work) { > + DRM_ERROR("Failed to allocate DRRS work structure\n"); > + return; > + } > + > + dev_priv->drrs.connector = connector; > + dev_priv->drrs.is_clone = false; > + > + work->interval = i915.drrs_interval; > + INIT_DELAYED_WORK(&work->work, intel_drrs_work_fn); > + > + dev_priv->drrs.drrs_work = work; > +} > + > static void i915_pineview_get_mem_freq(struct drm_device *dev) > { > drm_i915_private_t *dev_priv = dev->dev_private; > -- > 1.7.9.5 >
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 1c9d5cf..c4e9b37 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -796,6 +796,12 @@ struct i915_fbc { struct i915_drrs { struct intel_connector *connector; + bool is_clone; + struct intel_drrs_work { + struct delayed_work work; + struct drm_crtc *crtc; + int interval; + } *drrs_work; }; struct i915_psr { @@ -2092,6 +2098,7 @@ struct i915_params { int enable_ips; int invert_brightness; int enable_cmd_parser; + int drrs_interval; /* leave bools at the end to not create holes */ bool enable_hangcheck; bool fastboot; diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c index d1d7980..05ca0a0 100644 --- a/drivers/gpu/drm/i915/i915_params.c +++ b/drivers/gpu/drm/i915/i915_params.c @@ -47,6 +47,7 @@ struct i915_params i915 __read_mostly = { .invert_brightness = 0, .disable_display = 0, .enable_cmd_parser = 0, + .drrs_interval = 2000, }; module_param_named(modeset, i915.modeset, int, 0400); @@ -152,3 +153,10 @@ MODULE_PARM_DESC(disable_display, "Disable display (default: false)"); module_param_named(enable_cmd_parser, i915.enable_cmd_parser, int, 0600); MODULE_PARM_DESC(enable_cmd_parser, "Enable command parsing (1=enabled, 0=disabled [default])"); + +module_param_named(drrs_interval, i915.drrs_interval, int, 0600); +MODULE_PARM_DESC(drrs_interval, + "DRRS idleness detection interval (default: 2000 ms). " + "If this field is set to 0, then seamless DRRS feature " + "based on idleness detection is disabled. " + "The interval is to be set in milliseconds."); diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 7e4ea8d..c309561 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2542,6 +2542,7 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y, mutex_lock(&dev->struct_mutex); intel_update_fbc(dev); + intel_update_drrs(dev); intel_edp_psr_update(dev); mutex_unlock(&dev->struct_mutex); @@ -3708,6 +3709,7 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc) mutex_lock(&dev->struct_mutex); intel_update_fbc(dev); + intel_update_drrs(dev); mutex_unlock(&dev->struct_mutex); for_each_encoder_on_crtc(dev, crtc, encoder) @@ -3751,6 +3753,7 @@ static void haswell_crtc_enable_planes(struct drm_crtc *crtc) mutex_lock(&dev->struct_mutex); intel_update_fbc(dev); + intel_update_drrs(dev); mutex_unlock(&dev->struct_mutex); drm_vblank_on(dev, pipe); @@ -3948,6 +3951,7 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc) mutex_lock(&dev->struct_mutex); intel_update_fbc(dev); + intel_update_drrs(dev); mutex_unlock(&dev->struct_mutex); } @@ -3995,6 +3999,7 @@ static void haswell_crtc_disable(struct drm_crtc *crtc) mutex_lock(&dev->struct_mutex); intel_update_fbc(dev); + intel_update_drrs(dev); mutex_unlock(&dev->struct_mutex); } @@ -4391,6 +4396,7 @@ static void valleyview_crtc_enable(struct drm_crtc *crtc) intel_crtc_update_cursor(crtc, true); intel_update_fbc(dev); + intel_update_drrs(dev); for_each_encoder_on_crtc(dev, crtc, encoder) encoder->enable(encoder); @@ -4438,6 +4444,7 @@ static void i9xx_crtc_enable(struct drm_crtc *crtc) intel_crtc_dpms_overlay(intel_crtc, true); intel_update_fbc(dev); + intel_update_drrs(dev); for_each_encoder_on_crtc(dev, crtc, encoder) encoder->enable(encoder); @@ -4505,6 +4512,7 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc) intel_update_watermarks(crtc); intel_update_fbc(dev); + intel_update_drrs(dev); } static void i9xx_crtc_off(struct drm_crtc *crtc) @@ -8508,6 +8516,10 @@ static void intel_unpin_work_fn(struct work_struct *__work) drm_gem_object_unreference(&work->pending_flip_obj->base); drm_gem_object_unreference(&work->old_fb_obj->base); + /* disable current DRRS work scheduled and restart + * to push work by another x seconds + */ + intel_update_drrs(dev); intel_update_fbc(dev); mutex_unlock(&dev->struct_mutex); @@ -8966,6 +8978,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, goto cleanup_pending; intel_disable_fbc(dev); + intel_disable_drrs(dev); intel_mark_fb_busy(obj, NULL); mutex_unlock(&dev->struct_mutex); @@ -11338,6 +11351,7 @@ void intel_modeset_init(struct drm_device *dev) /* Just in case the BIOS is doing something questionable. */ intel_disable_fbc(dev); + intel_disable_drrs(dev); mutex_lock(&dev->mode_config.mutex); intel_modeset_setup_hw_state(dev, false); @@ -11803,6 +11817,8 @@ void intel_modeset_cleanup(struct drm_device *dev) intel_disable_fbc(dev); + intel_disable_drrs(dev); + intel_disable_gt_powersave(dev); ironlake_teardown_rc6(dev); diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 9640df1..4f0281a 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -3351,16 +3351,33 @@ intel_dp_connector_destroy(struct drm_connector *connector) kfree(connector); } +static void +intel_dp_drrs_fini(struct drm_i915_private *dev_priv) +{ + if (cancel_delayed_work_sync(&dev_priv->drrs.drrs_work->work)) { + kfree(dev_priv->drrs.drrs_work); + dev_priv->drrs.drrs_work = NULL; + dev_priv->drrs.connector = NULL; + } +} + void intel_dp_encoder_destroy(struct drm_encoder *encoder) { struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); struct intel_dp *intel_dp = &intel_dig_port->dp; struct drm_device *dev = intel_dp_to_dev(intel_dp); + struct drm_i915_private *dev_priv = dev->dev_private; drm_dp_aux_unregister_i2c_bus(&intel_dp->aux); drm_encoder_cleanup(encoder); if (is_edp(intel_dp)) { cancel_delayed_work_sync(&intel_dp->panel_vdd_work); + + if (dev_priv->drrs.connector && dev_priv->drrs.drrs_work && + intel_dp == enc_to_intel_dp( + &dev_priv->drrs.connector->encoder->base)) + intel_dp_drrs_fini(dev_priv); + mutex_lock(&dev->mode_config.mutex); edp_panel_vdd_off_sync(intel_dp); mutex_unlock(&dev->mode_config.mutex); @@ -3751,7 +3768,7 @@ intel_dp_drrs_init(struct intel_digital_port *intel_dig_port, if (downclock_mode != NULL && dev_priv->vbt.drrs_type == SEAMLESS_DRRS_SUPPORT) { - dev_priv->drrs.connector = intel_connector; + intel_init_drrs_idleness_detection(dev, intel_connector); mutex_init(&intel_dp->drrs_state.mutex); @@ -3759,7 +3776,8 @@ intel_dp_drrs_init(struct intel_digital_port *intel_dig_port, intel_dp->drrs_state.refresh_rate_type = DRRS_HIGH_RR; DRM_INFO("seamless DRRS supported for eDP panel.\n"); - } + } else + DRM_INFO("DRRS not supported\n"); return downclock_mode; } diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 46fc8b3..570cc47 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -930,7 +930,10 @@ void intel_runtime_pm_put(struct drm_i915_private *dev_priv); void intel_init_runtime_pm(struct drm_i915_private *dev_priv); void intel_fini_runtime_pm(struct drm_i915_private *dev_priv); void ilk_wm_get_hw_state(struct drm_device *dev); - +void intel_init_drrs_idleness_detection(struct drm_device *dev, + struct intel_connector *connector); +void intel_update_drrs(struct drm_device *dev); +void intel_disable_drrs(struct drm_device *dev); /* intel_sdvo.c */ bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg, bool is_sdvob); diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index fd68f93..6a78fca 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -621,6 +621,144 @@ out_disable: i915_gem_stolen_cleanup_compression(dev); } +static void intel_drrs_work_fn(struct work_struct *__work) +{ + struct intel_drrs_work *work = + container_of(to_delayed_work(__work), + struct intel_drrs_work, work); + struct drm_device *dev = work->crtc->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + + /* Double check if the dual-display mode is active. */ + if (dev_priv->drrs.is_clone) + return; + + intel_dp_set_drrs_state(work->crtc->dev, + dev_priv->drrs.connector->panel.downclock_mode->vrefresh); +} + +static void intel_cancel_drrs_work(struct drm_i915_private *dev_priv) +{ + if (dev_priv->drrs.drrs_work == NULL) + return; + + cancel_delayed_work_sync(&dev_priv->drrs.drrs_work->work); +} + +static void intel_enable_drrs(struct drm_crtc *crtc) +{ + struct drm_device *dev = crtc->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_dp *intel_dp = NULL; + + intel_dp = enc_to_intel_dp(&dev_priv->drrs.connector->encoder->base); + + if (intel_dp == NULL) + return; + + intel_cancel_drrs_work(dev_priv); + + if (intel_dp->drrs_state.refresh_rate_type != DRRS_LOW_RR) { + dev_priv->drrs.drrs_work->crtc = crtc; + + /* Delay the actual enabling to let pageflipping cease and the + * display to settle before starting DRRS + */ + schedule_delayed_work(&dev_priv->drrs.drrs_work->work, + msecs_to_jiffies(dev_priv->drrs.drrs_work->interval)); + } +} + +void intel_disable_drrs(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_dp *intel_dp = NULL; + + if (dev_priv->drrs.connector == NULL) + return; + + intel_dp = enc_to_intel_dp(&dev_priv->drrs.connector->encoder->base); + + if (intel_dp == NULL) + return; + + /* as part of disable DRRS, reset refresh rate to HIGH_RR */ + if (intel_dp->drrs_state.refresh_rate_type == DRRS_LOW_RR) { + intel_cancel_drrs_work(dev_priv); + intel_dp_set_drrs_state(dev, + dev_priv->drrs.connector->panel.fixed_mode->vrefresh); + } +} + +/** + * intel_update_drrs - enable/disable DRRS as needed + * @dev: the drm_device +*/ +void intel_update_drrs(struct drm_device *dev) +{ + struct drm_crtc *crtc = NULL, *tmp_crtc; + struct drm_i915_private *dev_priv = dev->dev_private; + + /* if drrs.connector is NULL, then drrs_init did not get called. + * which means DRRS is not supported. + */ + if (dev_priv->drrs.connector == NULL) + return; + + if (dev_priv->drrs.connector->panel.downclock_mode == NULL) + return; + + list_for_each_entry(tmp_crtc, &dev->mode_config.crtc_list, head) { + if (tmp_crtc != NULL && intel_crtc_active(tmp_crtc)) { + if (crtc) { + DRM_DEBUG_KMS( + "more than one pipe active, disabling DRRS\n"); + dev_priv->drrs.is_clone = true; + intel_disable_drrs(dev); + return; + } + crtc = tmp_crtc; + } + } + + if (crtc == NULL) { + DRM_DEBUG_KMS("DRRS: crtc not initialized\n"); + return; + } + + dev_priv->drrs.is_clone = false; + intel_disable_drrs(dev); + + /* re-enable idleness detection */ + intel_enable_drrs(crtc); +} + +void intel_init_drrs_idleness_detection(struct drm_device *dev, + struct intel_connector *connector) +{ + struct intel_drrs_work *work; + struct drm_i915_private *dev_priv = dev->dev_private; + + if (i915.drrs_interval == 0) { + DRM_INFO("DRRS disable by flag\n"); + return; + } + + work = kzalloc(sizeof(struct intel_drrs_work), GFP_KERNEL); + if (!work) { + DRM_ERROR("Failed to allocate DRRS work structure\n"); + return; + } + + dev_priv->drrs.connector = connector; + dev_priv->drrs.is_clone = false; + + work->interval = i915.drrs_interval; + INIT_DELAYED_WORK(&work->work, intel_drrs_work_fn); + + dev_priv->drrs.drrs_work = work; +} + static void i915_pineview_get_mem_freq(struct drm_device *dev) { drm_i915_private_t *dev_priv = dev->dev_private;