drm: Replace crtc fb with primary plane fb (v3)

Now that CRTC's have a primary plane, there's no need to track the
framebuffer in the CRTC.  Replace all references to the CRTC fb with the
primary plane's fb.

This patch was generated by the Coccinelle semantic patching tool using
the following rules:

        @@ struct drm_crtc C; @@
        -   (C).fb
        +   C.primary->fb

        @@ struct drm_crtc *C; @@
        -   (C)->fb
        +   C->primary->fb

v3: Generate patch via coccinelle.  Actual removal of crtc->fb has been
    moved to a subsequent patch.

v2: Fixup several lingering crtc->fb instances that were missed in the
    first patch iteration.  [Rob Clark]

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>

1 files changed, 12 insertions, 11 deletions

diff --git a/drivers/gpu/drm/armada/armada_crtc.c b/drivers/gpu/drm/armada/armada_crtc.c
index d8e398275ca8..5831e4109e75 100644
--- a/drivers/gpu/drm/armada/armada_crtc.c
+++ b/drivers/gpu/drm/armada/armada_crtc.c
@@ -478,11 +478,12 @@ static int armada_drm_crtc_mode_set(struct drm_crtc *crtc,
         unsigned i;
         bool interlaced;
 
-        drm_framebuffer_reference(crtc->fb);
+        drm_framebuffer_reference(crtc->primary->fb);
 
         interlaced = !!(adj->flags & DRM_MODE_FLAG_INTERLACE);
 
-        i = armada_drm_crtc_calc_fb(dcrtc->crtc.fb, x, y, regs, interlaced);
+        i = armada_drm_crtc_calc_fb(dcrtc->crtc.primary->fb,
+                                    x, y, regs, interlaced);
 
         rm = adj->crtc_hsync_start - adj->crtc_hdisplay;
         lm = adj->crtc_htotal - adj->crtc_hsync_end;
@@ -567,10 +568,10 @@ static int armada_drm_crtc_mode_set(struct drm_crtc *crtc,
         }
 
         val = CFG_GRA_ENA | CFG_GRA_HSMOOTH;
-        val |= CFG_GRA_FMT(drm_fb_to_armada_fb(dcrtc->crtc.fb)->fmt);
-        val |= CFG_GRA_MOD(drm_fb_to_armada_fb(dcrtc->crtc.fb)->mod);
+        val |= CFG_GRA_FMT(drm_fb_to_armada_fb(dcrtc->crtc.primary->fb)->fmt);
+        val |= CFG_GRA_MOD(drm_fb_to_armada_fb(dcrtc->crtc.primary->fb)->mod);
 
-        if (drm_fb_to_armada_fb(dcrtc->crtc.fb)->fmt > CFG_420)
+        if (drm_fb_to_armada_fb(dcrtc->crtc.primary->fb)->fmt > CFG_420)
                 val |= CFG_PALETTE_ENA;
 
         if (interlaced)
@@ -608,7 +609,7 @@ static int armada_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
         struct armada_regs regs[4];
         unsigned i;
 
-        i = armada_drm_crtc_calc_fb(crtc->fb, crtc->x, crtc->y, regs,
+        i = armada_drm_crtc_calc_fb(crtc->primary->fb, crtc->x, crtc->y, regs,
                                     dcrtc->interlaced);
         armada_reg_queue_end(regs, i);
 
@@ -616,7 +617,7 @@ static int armada_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
         wait_event(dcrtc->frame_wait, !dcrtc->frame_work);
 
         /* Take a reference to the new fb as we're using it */
-        drm_framebuffer_reference(crtc->fb);
+        drm_framebuffer_reference(crtc->primary->fb);
 
         /* Update the base in the CRTC */
         armada_drm_crtc_update_regs(dcrtc, regs);
@@ -637,7 +638,7 @@ static void armada_drm_crtc_disable(struct drm_crtc *crtc)
         struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
 
         armada_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
-        armada_drm_crtc_finish_fb(dcrtc, crtc->fb, true);
+        armada_drm_crtc_finish_fb(dcrtc, crtc->primary->fb, true);
 
         /* Power down most RAMs and FIFOs */
         writel_relaxed(CFG_PDWN256x32 | CFG_PDWN256x24 | CFG_PDWN256x8 |
@@ -904,7 +905,7 @@ static int armada_drm_crtc_page_flip(struct drm_crtc *crtc,
         int ret;
 
         /* We don't support changing the pixel format */
-        if (fb->pixel_format != crtc->fb->pixel_format)
+        if (fb->pixel_format != crtc->primary->fb->pixel_format)
                 return -EINVAL;
 
         work = kmalloc(sizeof(*work), GFP_KERNEL);
@@ -912,7 +913,7 @@ static int armada_drm_crtc_page_flip(struct drm_crtc *crtc,
                 return -ENOMEM;
 
         work->event = event;
-        work->old_fb = dcrtc->crtc.fb;
+        work->old_fb = dcrtc->crtc.primary->fb;
 
         i = armada_drm_crtc_calc_fb(fb, crtc->x, crtc->y, work->regs,
                                     dcrtc->interlaced);
@@ -941,7 +942,7 @@ static int armada_drm_crtc_page_flip(struct drm_crtc *crtc,
          * will _not_ drop that reference on successful return from this
          * function.  Simply mark this new framebuffer as the current one.
          */
-        dcrtc->crtc.fb = fb;
+        dcrtc->crtc.primary->fb = fb;
 
         /*
          * Finally, if the display is blanked, we won't receive an