drm/i915: Fix hpd live status bits for g4x
[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / i915 / intel_display.c
index 62211abe492265ce33cc5e04fbfdef71de398b8f..3292495ee10f0b09ef37335572dfdb158f93a7bf 100644 (file)
@@ -116,6 +116,7 @@ static void skylake_pfit_enable(struct intel_crtc *crtc);
 static void ironlake_pfit_disable(struct intel_crtc *crtc, bool force);
 static void ironlake_pfit_enable(struct intel_crtc *crtc);
 static void intel_modeset_setup_hw_state(struct drm_device *dev);
+static void intel_pre_disable_primary(struct drm_crtc *crtc);
 
 typedef struct {
        int     min, max;
@@ -2607,6 +2608,8 @@ intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
        struct drm_i915_gem_object *obj;
        struct drm_plane *primary = intel_crtc->base.primary;
        struct drm_plane_state *plane_state = primary->state;
+       struct drm_crtc_state *crtc_state = intel_crtc->base.state;
+       struct intel_plane *intel_plane = to_intel_plane(primary);
        struct drm_framebuffer *fb;
 
        if (!plane_config->fb)
@@ -2643,6 +2646,18 @@ intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
                }
        }
 
+       /*
+        * We've failed to reconstruct the BIOS FB.  Current display state
+        * indicates that the primary plane is visible, but has a NULL FB,
+        * which will lead to problems later if we don't fix it up.  The
+        * simplest solution is to just disable the primary plane now and
+        * pretend the BIOS never had it enabled.
+        */
+       to_intel_plane_state(plane_state)->visible = false;
+       crtc_state->plane_mask &= ~(1 << drm_plane_index(primary));
+       intel_pre_disable_primary(&intel_crtc->base);
+       intel_plane->disable_plane(primary, &intel_crtc->base);
+
        return;
 
 valid_fb:
@@ -4432,7 +4447,7 @@ int skl_update_scaler_crtc(struct intel_crtc_state *state)
                      intel_crtc->base.base.id, intel_crtc->pipe, SKL_CRTC_INDEX);
 
        return skl_update_scaler(state, !state->base.active, SKL_CRTC_INDEX,
-               &state->scaler_state.scaler_id, DRM_ROTATE_0,
+               &state->scaler_state.scaler_id, BIT(DRM_ROTATE_0),
                state->pipe_src_w, state->pipe_src_h,
                adjusted_mode->crtc_hdisplay, adjusted_mode->crtc_vdisplay);
 }
@@ -8213,12 +8228,14 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
        struct intel_encoder *encoder;
+       int i;
        u32 val, final;
        bool has_lvds = false;
        bool has_cpu_edp = false;
        bool has_panel = false;
        bool has_ck505 = false;
        bool can_ssc = false;
+       bool using_ssc_source = false;
 
        /* We need to take the global config into account */
        for_each_intel_encoder(dev, encoder) {
@@ -8245,8 +8262,22 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
                can_ssc = true;
        }
 
-       DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d\n",
-                     has_panel, has_lvds, has_ck505);
+       /* Check if any DPLLs are using the SSC source */
+       for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+               u32 temp = I915_READ(PCH_DPLL(i));
+
+               if (!(temp & DPLL_VCO_ENABLE))
+                       continue;
+
+               if ((temp & PLL_REF_INPUT_MASK) ==
+                   PLLB_REF_INPUT_SPREADSPECTRUMIN) {
+                       using_ssc_source = true;
+                       break;
+               }
+       }
+
+       DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d using_ssc_source %d\n",
+                     has_panel, has_lvds, has_ck505, using_ssc_source);
 
        /* Ironlake: try to setup display ref clock before DPLL
         * enabling. This is only under driver's control after
@@ -8283,9 +8314,9 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
                                final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
                } else
                        final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
-       } else {
-               final |= DREF_SSC_SOURCE_DISABLE;
-               final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
+       } else if (using_ssc_source) {
+               final |= DREF_SSC_SOURCE_ENABLE;
+               final |= DREF_SSC1_ENABLE;
        }
 
        if (final == val)
@@ -8331,7 +8362,7 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
                POSTING_READ(PCH_DREF_CONTROL);
                udelay(200);
        } else {
-               DRM_DEBUG_KMS("Disabling SSC entirely\n");
+               DRM_DEBUG_KMS("Disabling CPU source output\n");
 
                val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
 
@@ -8342,16 +8373,20 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
                POSTING_READ(PCH_DREF_CONTROL);
                udelay(200);
 
-               /* Turn off the SSC source */
-               val &= ~DREF_SSC_SOURCE_MASK;
-               val |= DREF_SSC_SOURCE_DISABLE;
+               if (!using_ssc_source) {
+                       DRM_DEBUG_KMS("Disabling SSC source\n");
 
-               /* Turn off SSC1 */
-               val &= ~DREF_SSC1_ENABLE;
+                       /* Turn off the SSC source */
+                       val &= ~DREF_SSC_SOURCE_MASK;
+                       val |= DREF_SSC_SOURCE_DISABLE;
 
-               I915_WRITE(PCH_DREF_CONTROL, val);
-               POSTING_READ(PCH_DREF_CONTROL);
-               udelay(200);
+                       /* Turn off SSC1 */
+                       val &= ~DREF_SSC1_ENABLE;
+
+                       I915_WRITE(PCH_DREF_CONTROL, val);
+                       POSTING_READ(PCH_DREF_CONTROL);
+                       udelay(200);
+               }
        }
 
        BUG_ON(val != final);
@@ -9654,6 +9689,8 @@ static void broadwell_set_cdclk(struct drm_device *dev, int cdclk)
        sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, data);
        mutex_unlock(&dev_priv->rps.hw_lock);
 
+       I915_WRITE(CDCLK_FREQ, DIV_ROUND_CLOSEST(cdclk, 1000) - 1);
+
        intel_update_cdclk(dev);
 
        WARN(cdclk != dev_priv->cdclk_freq,
@@ -9910,14 +9947,14 @@ static bool haswell_get_pipe_config(struct intel_crtc *crtc,
        return true;
 }
 
-static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
+static void i845_update_cursor(struct drm_crtc *crtc, u32 base, bool on)
 {
        struct drm_device *dev = crtc->dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
        struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
        uint32_t cntl = 0, size = 0;
 
-       if (base) {
+       if (on) {
                unsigned int width = intel_crtc->base.cursor->state->crtc_w;
                unsigned int height = intel_crtc->base.cursor->state->crtc_h;
                unsigned int stride = roundup_pow_of_two(width) * 4;
@@ -9972,16 +10009,15 @@ static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
        }
 }
 
-static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
+static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base, bool on)
 {
        struct drm_device *dev = crtc->dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
        struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
        int pipe = intel_crtc->pipe;
-       uint32_t cntl;
+       uint32_t cntl = 0;
 
-       cntl = 0;
-       if (base) {
+       if (on) {
                cntl = MCURSOR_GAMMA_ENABLE;
                switch (intel_crtc->base.cursor->state->crtc_w) {
                        case 64:
@@ -10032,18 +10068,17 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
        int y = cursor_state->crtc_y;
        u32 base = 0, pos = 0;
 
-       if (on)
-               base = intel_crtc->cursor_addr;
+       base = intel_crtc->cursor_addr;
 
        if (x >= intel_crtc->config->pipe_src_w)
-               base = 0;
+               on = false;
 
        if (y >= intel_crtc->config->pipe_src_h)
-               base = 0;
+               on = false;
 
        if (x < 0) {
                if (x + cursor_state->crtc_w <= 0)
-                       base = 0;
+                       on = false;
 
                pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
                x = -x;
@@ -10052,16 +10087,13 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
 
        if (y < 0) {
                if (y + cursor_state->crtc_h <= 0)
-                       base = 0;
+                       on = false;
 
                pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
                y = -y;
        }
        pos |= y << CURSOR_Y_SHIFT;
 
-       if (base == 0 && intel_crtc->cursor_base == 0)
-               return;
-
        I915_WRITE(CURPOS(pipe), pos);
 
        /* ILK+ do this automagically */
@@ -10072,9 +10104,9 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
        }
 
        if (IS_845G(dev) || IS_I865G(dev))
-               i845_update_cursor(crtc, base);
+               i845_update_cursor(crtc, base, on);
        else
-               i9xx_update_cursor(crtc, base);
+               i9xx_update_cursor(crtc, base, on);
 }
 
 static bool cursor_size_ok(struct drm_device *dev,
@@ -12113,18 +12145,22 @@ static void intel_dump_pipe_config(struct intel_crtc *crtc,
 static bool check_digital_port_conflicts(struct drm_atomic_state *state)
 {
        struct drm_device *dev = state->dev;
-       struct intel_encoder *encoder;
        struct drm_connector *connector;
-       struct drm_connector_state *connector_state;
        unsigned int used_ports = 0;
-       int i;
 
        /*
         * Walk the connector list instead of the encoder
         * list to detect the problem on ddi platforms
         * where there's just one encoder per digital port.
         */
-       for_each_connector_in_state(state, connector, connector_state, i) {
+       drm_for_each_connector(connector, dev) {
+               struct drm_connector_state *connector_state;
+               struct intel_encoder *encoder;
+
+               connector_state = drm_atomic_get_existing_connector_state(state, connector);
+               if (!connector_state)
+                       connector_state = connector->state;
+
                if (!connector_state->best_encoder)
                        continue;
 
@@ -13523,11 +13559,12 @@ intel_check_primary_plane(struct drm_plane *plane,
        int max_scale = DRM_PLANE_HELPER_NO_SCALING;
        bool can_position = false;
 
-       /* use scaler when colorkey is not required */
-       if (INTEL_INFO(plane->dev)->gen >= 9 &&
-           state->ckey.flags == I915_SET_COLORKEY_NONE) {
-               min_scale = 1;
-               max_scale = skl_max_scale(to_intel_crtc(crtc), crtc_state);
+       if (INTEL_INFO(plane->dev)->gen >= 9) {
+               /* use scaler when colorkey is not required */
+               if (state->ckey.flags == I915_SET_COLORKEY_NONE) {
+                       min_scale = 1;
+                       max_scale = skl_max_scale(to_intel_crtc(crtc), crtc_state);
+               }
                can_position = true;
        }
 
@@ -13718,6 +13755,7 @@ intel_check_cursor_plane(struct drm_plane *plane,
        struct drm_crtc *crtc = crtc_state->base.crtc;
        struct drm_framebuffer *fb = state->base.fb;
        struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+       enum pipe pipe = to_intel_plane(plane)->pipe;
        unsigned stride;
        int ret;
 
@@ -13751,6 +13789,22 @@ intel_check_cursor_plane(struct drm_plane *plane,
                return -EINVAL;
        }
 
+       /*
+        * There's something wrong with the cursor on CHV pipe C.
+        * If it straddles the left edge of the screen then
+        * moving it away from the edge or disabling it often
+        * results in a pipe underrun, and often that can lead to
+        * dead pipe (constant underrun reported, and it scans
+        * out just a solid color). To recover from that, the
+        * display power well must be turned off and on again.
+        * Refuse the put the cursor into that compromised position.
+        */
+       if (IS_CHERRYVIEW(plane->dev) && pipe == PIPE_C &&
+           state->visible && state->base.crtc_x < 0) {
+               DRM_DEBUG_KMS("CHV cursor C not allowed to straddle the left screen edge\n");
+               return -EINVAL;
+       }
+
        return 0;
 }
 
@@ -13774,9 +13828,6 @@ intel_commit_cursor_plane(struct drm_plane *plane,
        crtc = crtc ? crtc : plane->crtc;
        intel_crtc = to_intel_crtc(crtc);
 
-       if (intel_crtc->cursor_bo == obj)
-               goto update;
-
        if (!obj)
                addr = 0;
        else if (!INTEL_INFO(dev)->cursor_needs_physical)
@@ -13785,9 +13836,7 @@ intel_commit_cursor_plane(struct drm_plane *plane,
                addr = obj->phys_handle->busaddr;
 
        intel_crtc->cursor_addr = addr;
-       intel_crtc->cursor_bo = obj;
 
-update:
        if (crtc->state->active)
                intel_crtc_update_cursor(crtc, state->visible);
 }
@@ -15539,6 +15588,8 @@ void intel_modeset_cleanup(struct drm_device *dev)
        mutex_lock(&dev->struct_mutex);
        intel_cleanup_gt_powersave(dev);
        mutex_unlock(&dev->struct_mutex);
+
+       intel_teardown_gmbus(dev);
 }
 
 /*