drm/i915: Eliminate the RMW sprite colorkey management

Store the colorkey in intel_plane and kill off all the RMW stuff
handling it.

This is just an intermediate step and eventually the colorkey needs to
be converted into some properties.

v2: Actually update the hardware state in the set_colorkey ioctl (Daniel)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

2 files changed, 69 insertions, 235 deletions

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index c06854df466d..6f20f3a01398 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -510,6 +510,9 @@ struct intel_plane {
         bool can_scale;
         int max_downscale;
 
+        /* FIXME convert to properties */
+        struct drm_intel_sprite_colorkey ckey;
+
         /* Since we need to change the watermarks before/after
          * enabling/disabling the planes, we need to store the parameters here
          * as the other pieces of the struct may not reflect the values we want
@@ -536,10 +539,6 @@ struct intel_plane {
                            struct intel_plane_state *state);
         void (*commit_plane)(struct drm_plane *plane,
                              struct intel_plane_state *state);
-        int (*update_colorkey)(struct drm_plane *plane,
-                               struct drm_intel_sprite_colorkey *key);
-        void (*get_colorkey)(struct drm_plane *plane,
-                             struct drm_intel_sprite_colorkey *key);
 };
 
 struct intel_watermark_params {
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index cd531fa997de..d61e35d32e33 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -192,6 +192,7 @@ skl_update_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc,
         const int plane = intel_plane->plane + 1;
         u32 plane_ctl, stride_div;
         int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
+        const struct drm_intel_sprite_colorkey *key = &intel_plane->ckey;
 
         plane_ctl = I915_READ(PLANE_CTL(pipe, plane));
 
@@ -202,6 +203,7 @@ skl_update_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc,
         plane_ctl &= ~PLANE_CTL_TILED_MASK;
         plane_ctl &= ~PLANE_CTL_ALPHA_MASK;
         plane_ctl &= ~PLANE_CTL_ROTATE_MASK;
+        plane_ctl &= ~PLANE_CTL_KEY_ENABLE_MASK;
 
         /* Trickle feed has to be enabled */
         plane_ctl &= ~PLANE_CTL_TRICKLE_FEED_DISABLE;
@@ -281,6 +283,17 @@ skl_update_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc,
         crtc_w--;
         crtc_h--;
 
+        if (key->flags) {
+                I915_WRITE(PLANE_KEYVAL(pipe, plane), key->min_value);
+                I915_WRITE(PLANE_KEYMAX(pipe, plane), key->max_value);
+                I915_WRITE(PLANE_KEYMSK(pipe, plane), key->channel_mask);
+        }
+
+        if (key->flags & I915_SET_COLORKEY_DESTINATION)
+                plane_ctl |= PLANE_CTL_KEY_ENABLE_DESTINATION;
+        else if (key->flags & I915_SET_COLORKEY_SOURCE)
+                plane_ctl |= PLANE_CTL_KEY_ENABLE_SOURCE;
+
         I915_WRITE(PLANE_OFFSET(pipe, plane), (y << 16) | x);
         I915_WRITE(PLANE_STRIDE(pipe, plane), fb->pitches[0] / stride_div);
         I915_WRITE(PLANE_POS(pipe, plane), (crtc_y << 16) | crtc_x);
@@ -309,63 +322,6 @@ skl_disable_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc)
         intel_update_sprite_watermarks(drm_plane, crtc, 0, 0, 0, false, false);
 }
 
-static int
-skl_update_colorkey(struct drm_plane *drm_plane,
-                    struct drm_intel_sprite_colorkey *key)
-{
-        struct drm_device *dev = drm_plane->dev;
-        struct drm_i915_private *dev_priv = dev->dev_private;
-        struct intel_plane *intel_plane = to_intel_plane(drm_plane);
-        const int pipe = intel_plane->pipe;
-        const int plane = intel_plane->plane;
-        u32 plane_ctl;
-
-        I915_WRITE(PLANE_KEYVAL(pipe, plane), key->min_value);
-        I915_WRITE(PLANE_KEYMAX(pipe, plane), key->max_value);
-        I915_WRITE(PLANE_KEYMSK(pipe, plane), key->channel_mask);
-
-        plane_ctl = I915_READ(PLANE_CTL(pipe, plane));
-        plane_ctl &= ~PLANE_CTL_KEY_ENABLE_MASK;
-        if (key->flags & I915_SET_COLORKEY_DESTINATION)
-                plane_ctl |= PLANE_CTL_KEY_ENABLE_DESTINATION;
-        else if (key->flags & I915_SET_COLORKEY_SOURCE)
-                plane_ctl |= PLANE_CTL_KEY_ENABLE_SOURCE;
-        I915_WRITE(PLANE_CTL(pipe, plane), plane_ctl);
-
-        POSTING_READ(PLANE_CTL(pipe, plane));
-
-        return 0;
-}
-
-static void
-skl_get_colorkey(struct drm_plane *drm_plane,
-                 struct drm_intel_sprite_colorkey *key)
-{
-        struct drm_device *dev = drm_plane->dev;
-        struct drm_i915_private *dev_priv = dev->dev_private;
-        struct intel_plane *intel_plane = to_intel_plane(drm_plane);
-        const int pipe = intel_plane->pipe;
-        const int plane = intel_plane->plane;
-        u32 plane_ctl;
-
-        key->min_value = I915_READ(PLANE_KEYVAL(pipe, plane));
-        key->max_value = I915_READ(PLANE_KEYMAX(pipe, plane));
-        key->channel_mask = I915_READ(PLANE_KEYMSK(pipe, plane));
-
-        plane_ctl = I915_READ(PLANE_CTL(pipe, plane));
-
-        switch (plane_ctl & PLANE_CTL_KEY_ENABLE_MASK) {
-        case PLANE_CTL_KEY_ENABLE_DESTINATION:
-                key->flags = I915_SET_COLORKEY_DESTINATION;
-                break;
-        case PLANE_CTL_KEY_ENABLE_SOURCE:
-                key->flags = I915_SET_COLORKEY_SOURCE;
-                break;
-        default:
-                key->flags = I915_SET_COLORKEY_NONE;
-        }
-}
-
 static void
 chv_update_csc(struct intel_plane *intel_plane, uint32_t format)
 {
@@ -423,6 +379,7 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
         u32 sprctl;
         unsigned long sprsurf_offset, linear_offset;
         int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
+        const struct drm_intel_sprite_colorkey *key = &intel_plane->ckey;
 
         sprctl = I915_READ(SPCNTR(pipe, plane));
 
@@ -431,6 +388,7 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
         sprctl &= ~SP_YUV_BYTE_ORDER_MASK;
         sprctl &= ~SP_TILED;
         sprctl &= ~SP_ROTATE_180;
+        sprctl &= ~SP_SOURCE_KEY;
 
         switch (fb->pixel_format) {
         case DRM_FORMAT_YUYV:
@@ -513,6 +471,15 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
 
         intel_update_primary_plane(intel_crtc);
 
+        if (key->flags) {
+                I915_WRITE(SPKEYMINVAL(pipe, plane), key->min_value);
+                I915_WRITE(SPKEYMAXVAL(pipe, plane), key->max_value);
+                I915_WRITE(SPKEYMSK(pipe, plane), key->channel_mask);
+        }
+
+        if (key->flags & I915_SET_COLORKEY_SOURCE)
+                sprctl |= SP_SOURCE_KEY;
+
         if (IS_CHERRYVIEW(dev) && pipe == PIPE_B)
                 chv_update_csc(intel_plane, fb->pixel_format);
 
@@ -556,56 +523,6 @@ vlv_disable_plane(struct drm_plane *dplane, struct drm_crtc *crtc)
         intel_update_sprite_watermarks(dplane, crtc, 0, 0, 0, false, false);
 }
 
-static int
-vlv_update_colorkey(struct drm_plane *dplane,
-                    struct drm_intel_sprite_colorkey *key)
-{
-        struct drm_device *dev = dplane->dev;
-        struct drm_i915_private *dev_priv = dev->dev_private;
-        struct intel_plane *intel_plane = to_intel_plane(dplane);
-        int pipe = intel_plane->pipe;
-        int plane = intel_plane->plane;
-        u32 sprctl;
-
-        if (key->flags & I915_SET_COLORKEY_DESTINATION)
-                return -EINVAL;
-
-        I915_WRITE(SPKEYMINVAL(pipe, plane), key->min_value);
-        I915_WRITE(SPKEYMAXVAL(pipe, plane), key->max_value);
-        I915_WRITE(SPKEYMSK(pipe, plane), key->channel_mask);
-
-        sprctl = I915_READ(SPCNTR(pipe, plane));
-        sprctl &= ~SP_SOURCE_KEY;
-        if (key->flags & I915_SET_COLORKEY_SOURCE)
-                sprctl |= SP_SOURCE_KEY;
-        I915_WRITE(SPCNTR(pipe, plane), sprctl);
-
-        POSTING_READ(SPKEYMSK(pipe, plane));
-
-        return 0;
-}
-
-static void
-vlv_get_colorkey(struct drm_plane *dplane,
-                 struct drm_intel_sprite_colorkey *key)
-{
-        struct drm_device *dev = dplane->dev;
-        struct drm_i915_private *dev_priv = dev->dev_private;
-        struct intel_plane *intel_plane = to_intel_plane(dplane);
-        int pipe = intel_plane->pipe;
-        int plane = intel_plane->plane;
-        u32 sprctl;
-
-        key->min_value = I915_READ(SPKEYMINVAL(pipe, plane));
-        key->max_value = I915_READ(SPKEYMAXVAL(pipe, plane));
-        key->channel_mask = I915_READ(SPKEYMSK(pipe, plane));
-
-        sprctl = I915_READ(SPCNTR(pipe, plane));
-        if (sprctl & SP_SOURCE_KEY)
-                key->flags = I915_SET_COLORKEY_SOURCE;
-        else
-                key->flags = I915_SET_COLORKEY_NONE;
-}
 
 static void
 ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
@@ -620,10 +537,11 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
         struct intel_plane *intel_plane = to_intel_plane(plane);
         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
         struct drm_i915_gem_object *obj = intel_fb_obj(fb);
-        int pipe = intel_plane->pipe;
+        enum pipe pipe = intel_plane->pipe;
         u32 sprctl, sprscale = 0;
         unsigned long sprsurf_offset, linear_offset;
         int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
+        const struct drm_intel_sprite_colorkey *key = &intel_plane->ckey;
 
         sprctl = I915_READ(SPRCTL(pipe));
 
@@ -633,6 +551,7 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
         sprctl &= ~SPRITE_YUV_BYTE_ORDER_MASK;
         sprctl &= ~SPRITE_TILED;
         sprctl &= ~SPRITE_ROTATE_180;
+        sprctl &= ~(SPRITE_SOURCE_KEY | SPRITE_DEST_KEY);
 
         switch (fb->pixel_format) {
         case DRM_FORMAT_XBGR8888:
@@ -709,6 +628,17 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 
         intel_update_primary_plane(intel_crtc);
 
+        if (key->flags) {
+                I915_WRITE(SPRKEYVAL(pipe), key->min_value);
+                I915_WRITE(SPRKEYMAX(pipe), key->max_value);
+                I915_WRITE(SPRKEYMSK(pipe), key->channel_mask);
+        }
+
+        if (key->flags & I915_SET_COLORKEY_DESTINATION)
+                sprctl |= SPRITE_DEST_KEY;
+        else if (key->flags & I915_SET_COLORKEY_SOURCE)
+                sprctl |= SPRITE_SOURCE_KEY;
+
         I915_WRITE(SPRSTRIDE(pipe), fb->pitches[0]);
         I915_WRITE(SPRPOS(pipe), (crtc_y << 16) | crtc_x);
 
@@ -752,60 +682,6 @@ ivb_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc)
         intel_flush_primary_plane(dev_priv, intel_crtc->plane);
 }
 
-static int
-ivb_update_colorkey(struct drm_plane *plane,
-                    struct drm_intel_sprite_colorkey *key)
-{
-        struct drm_device *dev = plane->dev;
-        struct drm_i915_private *dev_priv = dev->dev_private;
-        struct intel_plane *intel_plane;
-        u32 sprctl;
-        int ret = 0;
-
-        intel_plane = to_intel_plane(plane);
-
-        I915_WRITE(SPRKEYVAL(intel_plane->pipe), key->min_value);
-        I915_WRITE(SPRKEYMAX(intel_plane->pipe), key->max_value);
-        I915_WRITE(SPRKEYMSK(intel_plane->pipe), key->channel_mask);
-
-        sprctl = I915_READ(SPRCTL(intel_plane->pipe));
-        sprctl &= ~(SPRITE_SOURCE_KEY | SPRITE_DEST_KEY);
-        if (key->flags & I915_SET_COLORKEY_DESTINATION)
-                sprctl |= SPRITE_DEST_KEY;
-        else if (key->flags & I915_SET_COLORKEY_SOURCE)
-                sprctl |= SPRITE_SOURCE_KEY;
-        I915_WRITE(SPRCTL(intel_plane->pipe), sprctl);
-
-        POSTING_READ(SPRKEYMSK(intel_plane->pipe));
-
-        return ret;
-}
-
-static void
-ivb_get_colorkey(struct drm_plane *plane, struct drm_intel_sprite_colorkey *key)
-{
-        struct drm_device *dev = plane->dev;
-        struct drm_i915_private *dev_priv = dev->dev_private;
-        struct intel_plane *intel_plane;
-        u32 sprctl;
-
-        intel_plane = to_intel_plane(plane);
-
-        key->min_value = I915_READ(SPRKEYVAL(intel_plane->pipe));
-        key->max_value = I915_READ(SPRKEYMAX(intel_plane->pipe));
-        key->channel_mask = I915_READ(SPRKEYMSK(intel_plane->pipe));
-        key->flags = 0;
-
-        sprctl = I915_READ(SPRCTL(intel_plane->pipe));
-
-        if (sprctl & SPRITE_DEST_KEY)
-                key->flags = I915_SET_COLORKEY_DESTINATION;
-        else if (sprctl & SPRITE_SOURCE_KEY)
-                key->flags = I915_SET_COLORKEY_SOURCE;
-        else
-                key->flags = I915_SET_COLORKEY_NONE;
-}
-
 static void
 ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
                  struct drm_framebuffer *fb,
@@ -823,6 +699,7 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
         unsigned long dvssurf_offset, linear_offset;
         u32 dvscntr, dvsscale;
         int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
+        const struct drm_intel_sprite_colorkey *key = &intel_plane->ckey;
 
         dvscntr = I915_READ(DVSCNTR(pipe));
 
@@ -832,6 +709,7 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
         dvscntr &= ~DVS_YUV_BYTE_ORDER_MASK;
         dvscntr &= ~DVS_TILED;
         dvscntr &= ~DVS_ROTATE_180;
+        dvscntr &= ~(DVS_SOURCE_KEY | DVS_DEST_KEY);
 
         switch (fb->pixel_format) {
         case DRM_FORMAT_XBGR8888:
@@ -899,6 +777,17 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 
         intel_update_primary_plane(intel_crtc);
 
+        if (key->flags) {
+                I915_WRITE(DVSKEYVAL(pipe), key->min_value);
+                I915_WRITE(DVSKEYMAX(pipe), key->max_value);
+                I915_WRITE(DVSKEYMSK(pipe), key->channel_mask);
+        }
+
+        if (key->flags & I915_SET_COLORKEY_DESTINATION)
+                dvscntr |= DVS_DEST_KEY;
+        else if (key->flags & I915_SET_COLORKEY_SOURCE)
+                dvscntr |= DVS_SOURCE_KEY;
+
         I915_WRITE(DVSSTRIDE(pipe), fb->pitches[0]);
         I915_WRITE(DVSPOS(pipe), (crtc_y << 16) | crtc_x);
 
@@ -1004,67 +893,9 @@ intel_pre_disable_primary(struct drm_crtc *crtc)
         hsw_disable_ips(intel_crtc);
 }
 
-static int
-ilk_update_colorkey(struct drm_plane *plane,
-                    struct drm_intel_sprite_colorkey *key)
-{
-        struct drm_device *dev = plane->dev;
-        struct drm_i915_private *dev_priv = dev->dev_private;
-        struct intel_plane *intel_plane;
-        u32 dvscntr;
-        int ret = 0;
-
-        intel_plane = to_intel_plane(plane);
-
-        I915_WRITE(DVSKEYVAL(intel_plane->pipe), key->min_value);
-        I915_WRITE(DVSKEYMAX(intel_plane->pipe), key->max_value);
-        I915_WRITE(DVSKEYMSK(intel_plane->pipe), key->channel_mask);
-
-        dvscntr = I915_READ(DVSCNTR(intel_plane->pipe));
-        dvscntr &= ~(DVS_SOURCE_KEY | DVS_DEST_KEY);
-        if (key->flags & I915_SET_COLORKEY_DESTINATION)
-                dvscntr |= DVS_DEST_KEY;
-        else if (key->flags & I915_SET_COLORKEY_SOURCE)
-                dvscntr |= DVS_SOURCE_KEY;
-        I915_WRITE(DVSCNTR(intel_plane->pipe), dvscntr);
-
-        POSTING_READ(DVSKEYMSK(intel_plane->pipe));
-
-        return ret;
-}
-
-static void
-ilk_get_colorkey(struct drm_plane *plane, struct drm_intel_sprite_colorkey *key)
-{
-        struct drm_device *dev = plane->dev;
-        struct drm_i915_private *dev_priv = dev->dev_private;
-        struct intel_plane *intel_plane;
-        u32 dvscntr;
-
-        intel_plane = to_intel_plane(plane);
-
-        key->min_value = I915_READ(DVSKEYVAL(intel_plane->pipe));
-        key->max_value = I915_READ(DVSKEYMAX(intel_plane->pipe));
-        key->channel_mask = I915_READ(DVSKEYMSK(intel_plane->pipe));
-        key->flags = 0;
-
-        dvscntr = I915_READ(DVSCNTR(intel_plane->pipe));
-
-        if (dvscntr & DVS_DEST_KEY)
-                key->flags = I915_SET_COLORKEY_DESTINATION;
-        else if (dvscntr & DVS_SOURCE_KEY)
-                key->flags = I915_SET_COLORKEY_SOURCE;
-        else
-                key->flags = I915_SET_COLORKEY_NONE;
-}
-
 static bool colorkey_enabled(struct intel_plane *intel_plane)
 {
-        struct drm_intel_sprite_colorkey key;
-
-        intel_plane->get_colorkey(&intel_plane->base, &key);
-
-        return key.flags != I915_SET_COLORKEY_NONE;
+        return intel_plane->ckey.flags != I915_SET_COLORKEY_NONE;
 }
 
 static int
@@ -1317,6 +1148,10 @@ int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
         if ((set->flags & (I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE)) == (I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE))
                 return -EINVAL;
 
+        if (IS_VALLEYVIEW(dev) &&
+            set->flags & I915_SET_COLORKEY_DESTINATION)
+                return -EINVAL;
+
         drm_modeset_lock_all(dev);
 
         plane = drm_plane_find(dev, set->plane_id);
@@ -1326,7 +1161,15 @@ int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
         }
 
         intel_plane = to_intel_plane(plane);
-        ret = intel_plane->update_colorkey(plane, set);
+        intel_plane->ckey = *set;
+
+        /*
+         * The only way this could fail would be due to
+         * the current plane state being unsupportable already,
+         * and we dont't consider that an error for the
+         * colorkey ioctl. So just ignore any error.
+         */
+        intel_plane_restore(plane);
 
 out_unlock:
         drm_modeset_unlock_all(dev);
@@ -1350,7 +1193,7 @@ int intel_sprite_get_colorkey(struct drm_device *dev, void *data,
         }
 
         intel_plane = to_intel_plane(plane);
-        intel_plane->get_colorkey(plane, get);
+        *get = intel_plane->ckey;
 
 out_unlock:
         drm_modeset_unlock_all(dev);
@@ -1443,8 +1286,6 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
                 intel_plane->max_downscale = 16;
                 intel_plane->update_plane = ilk_update_plane;
                 intel_plane->disable_plane = ilk_disable_plane;
-                intel_plane->update_colorkey = ilk_update_colorkey;
-                intel_plane->get_colorkey = ilk_get_colorkey;
 
                 if (IS_GEN6(dev)) {
                         plane_formats = snb_plane_formats;
@@ -1468,16 +1309,12 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
                 if (IS_VALLEYVIEW(dev)) {
                         intel_plane->update_plane = vlv_update_plane;
                         intel_plane->disable_plane = vlv_disable_plane;
-                        intel_plane->update_colorkey = vlv_update_colorkey;
-                        intel_plane->get_colorkey = vlv_get_colorkey;
 
                         plane_formats = vlv_plane_formats;
                         num_plane_formats = ARRAY_SIZE(vlv_plane_formats);
                 } else {
                         intel_plane->update_plane = ivb_update_plane;
                         intel_plane->disable_plane = ivb_disable_plane;
-                        intel_plane->update_colorkey = ivb_update_colorkey;
-                        intel_plane->get_colorkey = ivb_get_colorkey;
 
                         plane_formats = snb_plane_formats;
                         num_plane_formats = ARRAY_SIZE(snb_plane_formats);
@@ -1492,8 +1329,6 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
                 intel_plane->max_downscale = 1;
                 intel_plane->update_plane = skl_update_plane;
                 intel_plane->disable_plane = skl_disable_plane;
-                intel_plane->update_colorkey = skl_update_colorkey;
-                intel_plane->get_colorkey = skl_get_colorkey;
 
                 plane_formats = skl_plane_formats;
                 num_plane_formats = ARRAY_SIZE(skl_plane_formats);