]> git.karo-electronics.de Git - mv-sheeva.git/commitdiff
Merge remote branch 'intel/drm-intel-fixes' of /ssd/git/drm-next into drm-fixes
authorDave Airlie <airlied@redhat.com>
Mon, 14 Feb 2011 00:13:34 +0000 (10:13 +1000)
committerDave Airlie <airlied@redhat.com>
Mon, 14 Feb 2011 00:13:34 +0000 (10:13 +1000)
* 'intel/drm-intel-fixes' of /ssd/git/drm-next:
  drm/i915: Fix resume regression from 5d1d0cc
  drm/i915/tv: Use polling rather than interrupt-based hotplug
  drm/i915: Trigger modesetting if force-audio changes
  drm/i915/sdvo: If we have an EDID confirm it matches the mode of the connection
  drm/i915: Disable RC6 on Ironlake
  drm/i915/lvds: Restore dithering on native modes for gen2/3
  drm/i915: Invalidate TLB caches on SNB BLT/BSD rings

drivers/gpu/drm/i915/i915_drv.c
drivers/gpu/drm/i915/i915_drv.h
drivers/gpu/drm/i915/i915_reg.h
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_dp.c
drivers/gpu/drm/i915/intel_drv.h
drivers/gpu/drm/i915/intel_hdmi.c
drivers/gpu/drm/i915/intel_lvds.c
drivers/gpu/drm/i915/intel_ringbuffer.c
drivers/gpu/drm/i915/intel_sdvo.c
drivers/gpu/drm/i915/intel_tv.c

index cfb56d0ff36797ec6f65fa3b7d33fd29dc233783..0ad533f06af97361a51666c7262eb96c4f218e71 100644 (file)
@@ -46,6 +46,9 @@ module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);
 unsigned int i915_powersave = 1;
 module_param_named(powersave, i915_powersave, int, 0600);
 
+unsigned int i915_enable_rc6 = 0;
+module_param_named(i915_enable_rc6, i915_enable_rc6, int, 0600);
+
 unsigned int i915_lvds_downclock = 0;
 module_param_named(lvds_downclock, i915_lvds_downclock, int, 0400);
 
@@ -360,7 +363,7 @@ static int i915_drm_thaw(struct drm_device *dev)
                /* Resume the modeset for every activated CRTC */
                drm_helper_resume_force_mode(dev);
 
-               if (dev_priv->renderctx && dev_priv->pwrctx)
+               if (IS_IRONLAKE_M(dev))
                        ironlake_enable_rc6(dev);
        }
 
index a0149c619cdd117026f2c4f32309ee462b623455..65dfe81d0035bc9ced9636c1397373c6664e5e20 100644 (file)
@@ -958,6 +958,7 @@ extern unsigned int i915_fbpercrtc;
 extern unsigned int i915_powersave;
 extern unsigned int i915_lvds_downclock;
 extern unsigned int i915_panel_use_ssc;
+extern unsigned int i915_enable_rc6;
 
 extern int i915_suspend(struct drm_device *dev, pm_message_t state);
 extern int i915_resume(struct drm_device *dev);
index 5cfc68940f17dcaaa76b528a1eaf863402a5046c..15d94c63918ce7a72bee8e6981fa5724a7d4952d 100644 (file)
  *   address/value pairs. Don't overdue it, though, x <= 2^4 must hold!
  */
 #define MI_LOAD_REGISTER_IMM(x)        MI_INSTR(0x22, 2*x-1)
-#define MI_FLUSH_DW            MI_INSTR(0x26, 2) /* for GEN6 */
+#define MI_FLUSH_DW            MI_INSTR(0x26, 1) /* for GEN6 */
+#define   MI_INVALIDATE_TLB    (1<<18)
+#define   MI_INVALIDATE_BSD    (1<<7)
 #define MI_BATCH_BUFFER                MI_INSTR(0x30, 1)
 #define   MI_BATCH_NON_SECURE  (1)
 #define   MI_BATCH_NON_SECURE_I965 (1<<8)
index 7e42aa58650430b147f81d1bba5fa7d3e176cedf..3b006536b3d23cda6c771de53f423345f35b9c89 100644 (file)
@@ -5558,9 +5558,7 @@ static void intel_crtc_reset(struct drm_crtc *crtc)
        /* Reset flags back to the 'unknown' status so that they
         * will be correctly set on the initial modeset.
         */
-       intel_crtc->cursor_addr = 0;
        intel_crtc->dpms_mode = -1;
-       intel_crtc->active = true; /* force the pipe off on setup_init_config */
 }
 
 static struct drm_crtc_helper_funcs intel_helper_funcs = {
@@ -5666,6 +5664,7 @@ static void intel_crtc_init(struct drm_device *dev, int pipe)
        dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
 
        intel_crtc_reset(&intel_crtc->base);
+       intel_crtc->active = true; /* force the pipe off on setup_init_config */
 
        if (HAS_PCH_SPLIT(dev)) {
                intel_helper_funcs.prepare = ironlake_crtc_prepare;
@@ -6463,52 +6462,60 @@ void intel_enable_clock_gating(struct drm_device *dev)
        }
 }
 
-void intel_disable_clock_gating(struct drm_device *dev)
+static void ironlake_teardown_rc6(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
 
        if (dev_priv->renderctx) {
-               struct drm_i915_gem_object *obj = dev_priv->renderctx;
-
-               I915_WRITE(CCID, 0);
-               POSTING_READ(CCID);
-
-               i915_gem_object_unpin(obj);
-               drm_gem_object_unreference(&obj->base);
+               i915_gem_object_unpin(dev_priv->renderctx);
+               drm_gem_object_unreference(&dev_priv->renderctx->base);
                dev_priv->renderctx = NULL;
        }
 
        if (dev_priv->pwrctx) {
-               struct drm_i915_gem_object *obj = dev_priv->pwrctx;
+               i915_gem_object_unpin(dev_priv->pwrctx);
+               drm_gem_object_unreference(&dev_priv->pwrctx->base);
+               dev_priv->pwrctx = NULL;
+       }
+}
+
+static void ironlake_disable_rc6(struct drm_device *dev)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+
+       if (I915_READ(PWRCTXA)) {
+               /* Wake the GPU, prevent RC6, then restore RSTDBYCTL */
+               I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) | RCX_SW_EXIT);
+               wait_for(((I915_READ(RSTDBYCTL) & RSX_STATUS_MASK) == RSX_STATUS_ON),
+                        50);
 
                I915_WRITE(PWRCTXA, 0);
                POSTING_READ(PWRCTXA);
 
-               i915_gem_object_unpin(obj);
-               drm_gem_object_unreference(&obj->base);
-               dev_priv->pwrctx = NULL;
+               I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
+               POSTING_READ(RSTDBYCTL);
        }
+
+       ironlake_disable_rc6(dev);
 }
 
-static void ironlake_disable_rc6(struct drm_device *dev)
+static int ironlake_setup_rc6(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
 
-       /* Wake the GPU, prevent RC6, then restore RSTDBYCTL */
-       I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) | RCX_SW_EXIT);
-       wait_for(((I915_READ(RSTDBYCTL) & RSX_STATUS_MASK) == RSX_STATUS_ON),
-                10);
-       POSTING_READ(CCID);
-       I915_WRITE(PWRCTXA, 0);
-       POSTING_READ(PWRCTXA);
-       I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
-       POSTING_READ(RSTDBYCTL);
-       i915_gem_object_unpin(dev_priv->renderctx);
-       drm_gem_object_unreference(&dev_priv->renderctx->base);
-       dev_priv->renderctx = NULL;
-       i915_gem_object_unpin(dev_priv->pwrctx);
-       drm_gem_object_unreference(&dev_priv->pwrctx->base);
-       dev_priv->pwrctx = NULL;
+       if (dev_priv->renderctx == NULL)
+               dev_priv->renderctx = intel_alloc_context_page(dev);
+       if (!dev_priv->renderctx)
+               return -ENOMEM;
+
+       if (dev_priv->pwrctx == NULL)
+               dev_priv->pwrctx = intel_alloc_context_page(dev);
+       if (!dev_priv->pwrctx) {
+               ironlake_teardown_rc6(dev);
+               return -ENOMEM;
+       }
+
+       return 0;
 }
 
 void ironlake_enable_rc6(struct drm_device *dev)
@@ -6516,15 +6523,26 @@ void ironlake_enable_rc6(struct drm_device *dev)
        struct drm_i915_private *dev_priv = dev->dev_private;
        int ret;
 
+       /* rc6 disabled by default due to repeated reports of hanging during
+        * boot and resume.
+        */
+       if (!i915_enable_rc6)
+               return;
+
+       ret = ironlake_setup_rc6(dev);
+       if (ret)
+               return;
+
        /*
         * GPU can automatically power down the render unit if given a page
         * to save state.
         */
        ret = BEGIN_LP_RING(6);
        if (ret) {
-               ironlake_disable_rc6(dev);
+               ironlake_teardown_rc6(dev);
                return;
        }
+
        OUT_RING(MI_SUSPEND_FLUSH | MI_SUSPEND_FLUSH_EN);
        OUT_RING(MI_SET_CONTEXT);
        OUT_RING(dev_priv->renderctx->gtt_offset |
@@ -6541,6 +6559,7 @@ void ironlake_enable_rc6(struct drm_device *dev)
        I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
 }
 
+
 /* Set up chip specific display functions */
 static void intel_init_display(struct drm_device *dev)
 {
@@ -6783,21 +6802,9 @@ void intel_modeset_init(struct drm_device *dev)
        if (IS_GEN6(dev))
                gen6_enable_rps(dev_priv);
 
-       if (IS_IRONLAKE_M(dev)) {
-               dev_priv->renderctx = intel_alloc_context_page(dev);
-               if (!dev_priv->renderctx)
-                       goto skip_rc6;
-               dev_priv->pwrctx = intel_alloc_context_page(dev);
-               if (!dev_priv->pwrctx) {
-                       i915_gem_object_unpin(dev_priv->renderctx);
-                       drm_gem_object_unreference(&dev_priv->renderctx->base);
-                       dev_priv->renderctx = NULL;
-                       goto skip_rc6;
-               }
+       if (IS_IRONLAKE_M(dev))
                ironlake_enable_rc6(dev);
-       }
 
-skip_rc6:
        INIT_WORK(&dev_priv->idle_work, intel_idle_update);
        setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
                    (unsigned long)dev);
index 1f4242b682c8a8edee1e8c568add1fedf2be3f25..51cb4e36997f75e250c9af7c02e5852b439cb422 100644 (file)
@@ -1639,6 +1639,24 @@ static int intel_dp_get_modes(struct drm_connector *connector)
        return 0;
 }
 
+static bool
+intel_dp_detect_audio(struct drm_connector *connector)
+{
+       struct intel_dp *intel_dp = intel_attached_dp(connector);
+       struct edid *edid;
+       bool has_audio = false;
+
+       edid = drm_get_edid(connector, &intel_dp->adapter);
+       if (edid) {
+               has_audio = drm_detect_monitor_audio(edid);
+
+               connector->display_info.raw_edid = NULL;
+               kfree(edid);
+       }
+
+       return has_audio;
+}
+
 static int
 intel_dp_set_property(struct drm_connector *connector,
                      struct drm_property *property,
@@ -1652,17 +1670,23 @@ intel_dp_set_property(struct drm_connector *connector,
                return ret;
 
        if (property == intel_dp->force_audio_property) {
-               if (val == intel_dp->force_audio)
+               int i = val;
+               bool has_audio;
+
+               if (i == intel_dp->force_audio)
                        return 0;
 
-               intel_dp->force_audio = val;
+               intel_dp->force_audio = i;
 
-               if (val > 0 && intel_dp->has_audio)
-                       return 0;
-               if (val < 0 && !intel_dp->has_audio)
+               if (i == 0)
+                       has_audio = intel_dp_detect_audio(connector);
+               else
+                       has_audio = i > 0;
+
+               if (has_audio == intel_dp->has_audio)
                        return 0;
 
-               intel_dp->has_audio = val > 0;
+               intel_dp->has_audio = has_audio;
                goto done;
        }
 
index 74db2557d6440ccc7b45e4f6cebf83d0ccb33751..2c431049963cad085f3ecc26e962e481b9993740 100644 (file)
@@ -298,7 +298,6 @@ extern void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 extern void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
                                    u16 *blue, int regno);
 extern void intel_enable_clock_gating(struct drm_device *dev);
-extern void intel_disable_clock_gating(struct drm_device *dev);
 extern void ironlake_enable_drps(struct drm_device *dev);
 extern void ironlake_disable_drps(struct drm_device *dev);
 extern void gen6_enable_rps(struct drm_i915_private *dev_priv);
index 0d0273e7b029296725032098d26eeb08fb8b5bc6..c635c9e357b9124e3617188cd9c249f2bde1e144 100644 (file)
@@ -251,6 +251,27 @@ static int intel_hdmi_get_modes(struct drm_connector *connector)
                                   &dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
 }
 
+static bool
+intel_hdmi_detect_audio(struct drm_connector *connector)
+{
+       struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
+       struct drm_i915_private *dev_priv = connector->dev->dev_private;
+       struct edid *edid;
+       bool has_audio = false;
+
+       edid = drm_get_edid(connector,
+                           &dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
+       if (edid) {
+               if (edid->input & DRM_EDID_INPUT_DIGITAL)
+                       has_audio = drm_detect_monitor_audio(edid);
+
+               connector->display_info.raw_edid = NULL;
+               kfree(edid);
+       }
+
+       return has_audio;
+}
+
 static int
 intel_hdmi_set_property(struct drm_connector *connector,
                      struct drm_property *property,
@@ -264,17 +285,23 @@ intel_hdmi_set_property(struct drm_connector *connector,
                return ret;
 
        if (property == intel_hdmi->force_audio_property) {
-               if (val == intel_hdmi->force_audio)
+               int i = val;
+               bool has_audio;
+
+               if (i == intel_hdmi->force_audio)
                        return 0;
 
-               intel_hdmi->force_audio = val;
+               intel_hdmi->force_audio = i;
 
-               if (val > 0 && intel_hdmi->has_audio)
-                       return 0;
-               if (val < 0 && !intel_hdmi->has_audio)
+               if (i == 0)
+                       has_audio = intel_hdmi_detect_audio(connector);
+               else
+                       has_audio = i > 0;
+
+               if (has_audio == intel_hdmi->has_audio)
                        return 0;
 
-               intel_hdmi->has_audio = val > 0;
+               intel_hdmi->has_audio = has_audio;
                goto done;
        }
 
index ace8d5d30dd21b25b3f0390cdd2b8d13659f666e..bcdba7bd5cfafb26efa1b8f150530836d8cc5c71 100644 (file)
@@ -261,12 +261,6 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
                return true;
        }
 
-       /* Make sure pre-965s set dither correctly */
-       if (INTEL_INFO(dev)->gen < 4) {
-               if (dev_priv->lvds_dither)
-                       pfit_control |= PANEL_8TO6_DITHER_ENABLE;
-       }
-
        /* Native modes don't need fitting */
        if (adjusted_mode->hdisplay == mode->hdisplay &&
            adjusted_mode->vdisplay == mode->vdisplay)
@@ -374,10 +368,16 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
        }
 
 out:
+       /* If not enabling scaling, be consistent and always use 0. */
        if ((pfit_control & PFIT_ENABLE) == 0) {
                pfit_control = 0;
                pfit_pgm_ratios = 0;
        }
+
+       /* Make sure pre-965 set dither correctly */
+       if (INTEL_INFO(dev)->gen < 4 && dev_priv->lvds_dither)
+               pfit_control |= PANEL_8TO6_DITHER_ENABLE;
+
        if (pfit_control != intel_lvds->pfit_control ||
            pfit_pgm_ratios != intel_lvds->pfit_pgm_ratios) {
                intel_lvds->pfit_control = pfit_control;
index 6218fa97aa1e27385749a449a055ccdd9df7a1c8..445f27efe677f0c7de0ae481fa11423d562a3b3b 100644 (file)
@@ -1059,22 +1059,25 @@ static void gen6_bsd_ring_write_tail(struct intel_ring_buffer *ring,
 }
 
 static int gen6_ring_flush(struct intel_ring_buffer *ring,
-                          u32 invalidate_domains,
-                          u32 flush_domains)
+                          u32 invalidate, u32 flush)
 {
+       uint32_t cmd;
        int ret;
 
-       if ((flush_domains & I915_GEM_DOMAIN_RENDER) == 0)
+       if (((invalidate | flush) & I915_GEM_GPU_DOMAINS) == 0)
                return 0;
 
        ret = intel_ring_begin(ring, 4);
        if (ret)
                return ret;
 
-       intel_ring_emit(ring, MI_FLUSH_DW);
-       intel_ring_emit(ring, 0);
+       cmd = MI_FLUSH_DW;
+       if (invalidate & I915_GEM_GPU_DOMAINS)
+               cmd |= MI_INVALIDATE_TLB | MI_INVALIDATE_BSD;
+       intel_ring_emit(ring, cmd);
        intel_ring_emit(ring, 0);
        intel_ring_emit(ring, 0);
+       intel_ring_emit(ring, MI_NOOP);
        intel_ring_advance(ring);
        return 0;
 }
@@ -1230,22 +1233,25 @@ static int blt_ring_begin(struct intel_ring_buffer *ring,
 }
 
 static int blt_ring_flush(struct intel_ring_buffer *ring,
-                          u32 invalidate_domains,
-                          u32 flush_domains)
+                         u32 invalidate, u32 flush)
 {
+       uint32_t cmd;
        int ret;
 
-       if ((flush_domains & I915_GEM_DOMAIN_RENDER) == 0)
+       if (((invalidate | flush) & I915_GEM_DOMAIN_RENDER) == 0)
                return 0;
 
        ret = blt_ring_begin(ring, 4);
        if (ret)
                return ret;
 
-       intel_ring_emit(ring, MI_FLUSH_DW);
-       intel_ring_emit(ring, 0);
+       cmd = MI_FLUSH_DW;
+       if (invalidate & I915_GEM_DOMAIN_RENDER)
+               cmd |= MI_INVALIDATE_TLB;
+       intel_ring_emit(ring, cmd);
        intel_ring_emit(ring, 0);
        intel_ring_emit(ring, 0);
+       intel_ring_emit(ring, MI_NOOP);
        intel_ring_advance(ring);
        return 0;
 }
index 6a09c1413d6038d558115ec94d7b8943067e77ca..7c50cdce84f075a9782df4bf479451a785b982d1 100644 (file)
@@ -46,6 +46,7 @@
                          SDVO_TV_MASK)
 
 #define IS_TV(c)       (c->output_flag & SDVO_TV_MASK)
+#define IS_TMDS(c)     (c->output_flag & SDVO_TMDS_MASK)
 #define IS_LVDS(c)     (c->output_flag & SDVO_LVDS_MASK)
 #define IS_TV_OR_LVDS(c) (c->output_flag & (SDVO_TV_MASK | SDVO_LVDS_MASK))
 
@@ -1359,7 +1360,8 @@ intel_sdvo_hdmi_sink_detect(struct drm_connector *connector)
                                intel_sdvo->has_hdmi_monitor = drm_detect_hdmi_monitor(edid);
                                intel_sdvo->has_hdmi_audio = drm_detect_monitor_audio(edid);
                        }
-               }
+               } else
+                       status = connector_status_disconnected;
                connector->display_info.raw_edid = NULL;
                kfree(edid);
        }
@@ -1407,10 +1409,25 @@ intel_sdvo_detect(struct drm_connector *connector, bool force)
 
        if ((intel_sdvo_connector->output_flag & response) == 0)
                ret = connector_status_disconnected;
-       else if (response & SDVO_TMDS_MASK)
+       else if (IS_TMDS(intel_sdvo_connector))
                ret = intel_sdvo_hdmi_sink_detect(connector);
-       else
-               ret = connector_status_connected;
+       else {
+               struct edid *edid;
+
+               /* if we have an edid check it matches the connection */
+               edid = intel_sdvo_get_edid(connector);
+               if (edid == NULL)
+                       edid = intel_sdvo_get_analog_edid(connector);
+               if (edid != NULL) {
+                       if (edid->input & DRM_EDID_INPUT_DIGITAL)
+                               ret = connector_status_disconnected;
+                       else
+                               ret = connector_status_connected;
+                       connector->display_info.raw_edid = NULL;
+                       kfree(edid);
+               } else
+                       ret = connector_status_connected;
+       }
 
        /* May update encoder flag for like clock for SDVO TV, etc.*/
        if (ret == connector_status_connected) {
@@ -1446,10 +1463,15 @@ static void intel_sdvo_get_ddc_modes(struct drm_connector *connector)
                edid = intel_sdvo_get_analog_edid(connector);
 
        if (edid != NULL) {
-               if (edid->input & DRM_EDID_INPUT_DIGITAL) {
+               struct intel_sdvo_connector *intel_sdvo_connector = to_intel_sdvo_connector(connector);
+               bool monitor_is_digital = !!(edid->input & DRM_EDID_INPUT_DIGITAL);
+               bool connector_is_digital = !!IS_TMDS(intel_sdvo_connector);
+
+               if (connector_is_digital == monitor_is_digital) {
                        drm_mode_connector_update_edid_property(connector, edid);
                        drm_add_edid_modes(connector, edid);
                }
+
                connector->display_info.raw_edid = NULL;
                kfree(edid);
        }
@@ -1668,6 +1690,22 @@ static void intel_sdvo_destroy(struct drm_connector *connector)
        kfree(connector);
 }
 
+static bool intel_sdvo_detect_hdmi_audio(struct drm_connector *connector)
+{
+       struct intel_sdvo *intel_sdvo = intel_attached_sdvo(connector);
+       struct edid *edid;
+       bool has_audio = false;
+
+       if (!intel_sdvo->is_hdmi)
+               return false;
+
+       edid = intel_sdvo_get_edid(connector);
+       if (edid != NULL && edid->input & DRM_EDID_INPUT_DIGITAL)
+               has_audio = drm_detect_monitor_audio(edid);
+
+       return has_audio;
+}
+
 static int
 intel_sdvo_set_property(struct drm_connector *connector,
                        struct drm_property *property,
@@ -1684,17 +1722,23 @@ intel_sdvo_set_property(struct drm_connector *connector,
                return ret;
 
        if (property == intel_sdvo_connector->force_audio_property) {
-               if (val == intel_sdvo_connector->force_audio)
+               int i = val;
+               bool has_audio;
+
+               if (i == intel_sdvo_connector->force_audio)
                        return 0;
 
-               intel_sdvo_connector->force_audio = val;
+               intel_sdvo_connector->force_audio = i;
 
-               if (val > 0 && intel_sdvo->has_hdmi_audio)
-                       return 0;
-               if (val < 0 && !intel_sdvo->has_hdmi_audio)
+               if (i == 0)
+                       has_audio = intel_sdvo_detect_hdmi_audio(connector);
+               else
+                       has_audio = i > 0;
+
+               if (has_audio == intel_sdvo->has_hdmi_audio)
                        return 0;
 
-               intel_sdvo->has_hdmi_audio = val > 0;
+               intel_sdvo->has_hdmi_audio = has_audio;
                goto done;
        }
 
index 93206e4eaa6f5b6bdf62e8335eaa0aab4eea4de7..fe4a53a50b8337807d49d757e6d94dc46b425b19 100644 (file)
@@ -1234,7 +1234,8 @@ static const struct drm_display_mode reported_modes[] = {
  * \return false if TV is disconnected.
  */
 static int
-intel_tv_detect_type (struct intel_tv *intel_tv)
+intel_tv_detect_type (struct intel_tv *intel_tv,
+                     struct drm_connector *connector)
 {
        struct drm_encoder *encoder = &intel_tv->base.base;
        struct drm_device *dev = encoder->dev;
@@ -1245,11 +1246,13 @@ intel_tv_detect_type (struct intel_tv *intel_tv)
        int type;
 
        /* Disable TV interrupts around load detect or we'll recurse */
-       spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
-       i915_disable_pipestat(dev_priv, 0,
-                             PIPE_HOTPLUG_INTERRUPT_ENABLE |
-                             PIPE_HOTPLUG_TV_INTERRUPT_ENABLE);
-       spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
+       if (connector->polled & DRM_CONNECTOR_POLL_HPD) {
+               spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
+               i915_disable_pipestat(dev_priv, 0,
+                                     PIPE_HOTPLUG_INTERRUPT_ENABLE |
+                                     PIPE_HOTPLUG_TV_INTERRUPT_ENABLE);
+               spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
+       }
 
        save_tv_dac = tv_dac = I915_READ(TV_DAC);
        save_tv_ctl = tv_ctl = I915_READ(TV_CTL);
@@ -1302,11 +1305,13 @@ intel_tv_detect_type (struct intel_tv *intel_tv)
        I915_WRITE(TV_CTL, save_tv_ctl);
 
        /* Restore interrupt config */
-       spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
-       i915_enable_pipestat(dev_priv, 0,
-                            PIPE_HOTPLUG_INTERRUPT_ENABLE |
-                            PIPE_HOTPLUG_TV_INTERRUPT_ENABLE);
-       spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
+       if (connector->polled & DRM_CONNECTOR_POLL_HPD) {
+               spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
+               i915_enable_pipestat(dev_priv, 0,
+                                    PIPE_HOTPLUG_INTERRUPT_ENABLE |
+                                    PIPE_HOTPLUG_TV_INTERRUPT_ENABLE);
+               spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
+       }
 
        return type;
 }
@@ -1356,7 +1361,7 @@ intel_tv_detect(struct drm_connector *connector, bool force)
        drm_mode_set_crtcinfo(&mode, CRTC_INTERLACE_HALVE_V);
 
        if (intel_tv->base.base.crtc && intel_tv->base.base.crtc->enabled) {
-               type = intel_tv_detect_type(intel_tv);
+               type = intel_tv_detect_type(intel_tv, connector);
        } else if (force) {
                struct drm_crtc *crtc;
                int dpms_mode;
@@ -1364,7 +1369,7 @@ intel_tv_detect(struct drm_connector *connector, bool force)
                crtc = intel_get_load_detect_pipe(&intel_tv->base, connector,
                                                  &mode, &dpms_mode);
                if (crtc) {
-                       type = intel_tv_detect_type(intel_tv);
+                       type = intel_tv_detect_type(intel_tv, connector);
                        intel_release_load_detect_pipe(&intel_tv->base, connector,
                                                       dpms_mode);
                } else
@@ -1658,6 +1663,18 @@ intel_tv_init(struct drm_device *dev)
        intel_encoder = &intel_tv->base;
        connector = &intel_connector->base;
 
+       /* The documentation, for the older chipsets at least, recommend
+        * using a polling method rather than hotplug detection for TVs.
+        * This is because in order to perform the hotplug detection, the PLLs
+        * for the TV must be kept alive increasing power drain and starving
+        * bandwidth from other encoders. Notably for instance, it causes
+        * pipe underruns on Crestline when this encoder is supposedly idle.
+        *
+        * More recent chipsets favour HDMI rather than integrated S-Video.
+        */
+       connector->polled =
+               DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
+
        drm_connector_init(dev, connector, &intel_tv_connector_funcs,
                           DRM_MODE_CONNECTOR_SVIDEO);