drm/i915: Move display w/a #1175

Move the display w/a #1175 to a better place. That place
being the new skl+ specific plane->check() hook. This leaves
the skl_check_plane_surface() stuff to deal with the gtt offset
and src coordinate stuff as originally envisioned.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180907152413.15761-12-ville.syrjala@linux.intel.com

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index ca1d07c..791314b 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2991,20 +2991,14 @@ static bool skl_check_main_ccs_coordinates(struct intel_plane_state *plane_state
        return true;
 }
 
-static int skl_check_main_surface(const struct intel_crtc_state *crtc_state,
-                                 struct intel_plane_state *plane_state)
+static int skl_check_main_surface(struct intel_plane_state *plane_state)
 {
-       struct drm_i915_private *dev_priv =
-               to_i915(plane_state->base.plane->dev);
        const struct drm_framebuffer *fb = plane_state->base.fb;
        unsigned int rotation = plane_state->base.rotation;
        int x = plane_state->base.src.x1 >> 16;
        int y = plane_state->base.src.y1 >> 16;
        int w = drm_rect_width(&plane_state->base.src) >> 16;
        int h = drm_rect_height(&plane_state->base.src) >> 16;
-       int dst_x = plane_state->base.dst.x1;
-       int dst_w = drm_rect_width(&plane_state->base.dst);
-       int pipe_src_w = crtc_state->pipe_src_w;
        int max_width = skl_max_plane_width(fb, 0, rotation);
        int max_height = 4096;
        u32 alignment, offset, aux_offset = plane_state->color_plane[1].offset;
@@ -3015,24 +3009,6 @@ static int skl_check_main_surface(const struct intel_crtc_state *crtc_state,
                return -EINVAL;
        }
 
-       /*
-        * Display WA #1175: cnl,glk
-        * Planes other than the cursor may cause FIFO underflow and display
-        * corruption if starting less than 4 pixels from the right edge of
-        * the screen.
-        * Besides the above WA fix the similar problem, where planes other
-        * than the cursor ending less than 4 pixels from the left edge of the
-        * screen may cause FIFO underflow and display corruption.
-        */
-       if ((IS_GEMINILAKE(dev_priv) || IS_CANNONLAKE(dev_priv)) &&
-           (dst_x + dst_w < 4 || dst_x > pipe_src_w - 4)) {
-               DRM_DEBUG_KMS("requested plane X %s position %d invalid (valid range %d-%d)\n",
-                             dst_x + dst_w < 4 ? "end" : "start",
-                             dst_x + dst_w < 4 ? dst_x + dst_w : dst_x,
-                             4, pipe_src_w - 4);
-               return -ERANGE;
-       }
-
        intel_add_fb_offsets(&x, &y, plane_state, 0);
        offset = intel_plane_compute_aligned_offset(&x, &y, plane_state, 0);
        alignment = intel_surf_alignment(fb, 0);
@@ -3093,8 +3069,7 @@ static int skl_check_main_surface(const struct intel_crtc_state *crtc_state,
 }
 
 static int
-skl_check_nv12_surface(const struct intel_crtc_state *crtc_state,
-                      struct intel_plane_state *plane_state)
+skl_check_nv12_surface(struct intel_plane_state *plane_state)
 {
        /* Display WA #1106 */
        if (plane_state->base.rotation !=
@@ -3165,8 +3140,7 @@ static int skl_check_ccs_aux_surface(struct intel_plane_state *plane_state)
        return 0;
 }
 
-int skl_check_plane_surface(const struct intel_crtc_state *crtc_state,
-                           struct intel_plane_state *plane_state)
+int skl_check_plane_surface(struct intel_plane_state *plane_state)
 {
        const struct drm_framebuffer *fb = plane_state->base.fb;
        unsigned int rotation = plane_state->base.rotation;
@@ -3190,7 +3164,7 @@ int skl_check_plane_surface(const struct intel_crtc_state *crtc_state,
         * the main surface setup depends on it.
         */
        if (fb->format->format == DRM_FORMAT_NV12) {
-               ret = skl_check_nv12_surface(crtc_state, plane_state);
+               ret = skl_check_nv12_surface(plane_state);
                if (ret)
                        return ret;
                ret = skl_check_nv12_aux_surface(plane_state);
@@ -3206,7 +3180,7 @@ int skl_check_plane_surface(const struct intel_crtc_state *crtc_state,
                plane_state->color_plane[1].y = 0;
        }
 
-       ret = skl_check_main_surface(crtc_state, plane_state);
+       ret = skl_check_main_surface(plane_state);
        if (ret)
                return ret;
 

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index f5cc0dc..d72d5a6 100644 (file)
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1660,8 +1660,7 @@ u32 skl_plane_ctl(const struct intel_crtc_state *crtc_state,
 u32 glk_color_ctl(const struct intel_plane_state *plane_state);
 u32 skl_plane_stride(const struct intel_plane_state *plane_state,
                     int plane);
-int skl_check_plane_surface(const struct intel_crtc_state *crtc_state,
-                           struct intel_plane_state *plane_state);
+int skl_check_plane_surface(struct intel_plane_state *plane_state);
 int i9xx_check_plane_surface(struct intel_plane_state *plane_state);
 int skl_format_to_fourcc(int format, bool rgb_order, bool alpha);
 unsigned int i9xx_plane_max_stride(struct intel_plane *plane,

diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 5fd425a..206e9d0 100644 (file)
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1220,6 +1220,36 @@ static int skl_plane_check_fb(const struct intel_crtc_state *crtc_state,
        return 0;
 }
 
+static int skl_plane_check_dst_coordinates(const struct intel_crtc_state *crtc_state,
+                                          const struct intel_plane_state *plane_state)
+{
+       struct drm_i915_private *dev_priv =
+               to_i915(plane_state->base.plane->dev);
+       int crtc_x = plane_state->base.dst.x1;
+       int crtc_w = drm_rect_width(&plane_state->base.dst);
+       int pipe_src_w = crtc_state->pipe_src_w;
+
+       /*
+        * Display WA #1175: cnl,glk
+        * Planes other than the cursor may cause FIFO underflow and display
+        * corruption if starting less than 4 pixels from the right edge of
+        * the screen.
+        * Besides the above WA fix the similar problem, where planes other
+        * than the cursor ending less than 4 pixels from the left edge of the
+        * screen may cause FIFO underflow and display corruption.
+        */
+       if ((IS_GEMINILAKE(dev_priv) || IS_CANNONLAKE(dev_priv)) &&
+           (crtc_x + crtc_w < 4 || crtc_x > pipe_src_w - 4)) {
+               DRM_DEBUG_KMS("requested plane X %s position %d invalid (valid range %d-%d)\n",
+                             crtc_x + crtc_w < 4 ? "end" : "start",
+                             crtc_x + crtc_w < 4 ? crtc_x + crtc_w : crtc_x,
+                             4, pipe_src_w - 4);
+               return -ERANGE;
+       }
+
+       return 0;
+}
+
 int skl_plane_check(struct intel_crtc_state *crtc_state,
                    struct intel_plane_state *plane_state)
 {
@@ -1254,11 +1284,15 @@ int skl_plane_check(struct intel_crtc_state *crtc_state,
        if (!plane_state->base.visible)
                return 0;
 
+       ret = skl_plane_check_dst_coordinates(crtc_state, plane_state);
+       if (ret)
+               return ret;
+
        ret = intel_plane_check_src_coordinates(plane_state);
        if (ret)
                return ret;
 
-       ret = skl_check_plane_surface(crtc_state, plane_state);
+       ret = skl_check_plane_surface(plane_state);
        if (ret)
                return ret;