target/linux/bcm27xx/patches-5.4/950-0100-drm-vc4-Add-FB-modifier-support-to-firmwarekms.patch

   1 From 427c7c3d63a165ae3d5da45cd2afbe68cb4a34a9 Mon Sep 17 00:00:00 2001
   2 From: Eric Anholt <eric@anholt.net>
   3 Date: Wed, 7 Jun 2017 14:39:49 -0700
   4 Subject: [PATCH] drm/vc4: Add FB modifier support to firmwarekms.
   5
   6 Signed-off-by: Eric Anholt <eric@anholt.net>
   7 (cherry picked from commit 11752d73488e08aaeb65fe8289a9c016acde26c2)
   8 ---
   9  drivers/gpu/drm/vc4/vc4_firmware_kms.c | 5 +++++
  10  1 file changed, 5 insertions(+)
  11
  12 --- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
  13 +++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
  14 @@ -17,6 +17,7 @@
  15  #include "drm/drm_atomic_helper.h"
  16  #include "drm/drm_plane_helper.h"
  17  #include "drm/drm_crtc_helper.h"
  18 +#include "drm/drm_fourcc.h"
  19  #include "linux/clk.h"
  20  #include "linux/debugfs.h"
  21  #include "drm/drm_fb_cma_helper.h"
  22 @@ -134,6 +135,10 @@ static void vc4_primary_plane_atomic_upd
  23         fbinfo->yoffset = state->crtc_y;
  24         fbinfo->base = bo->paddr + fb->offsets[0];
  25         fbinfo->pitch = fb->pitches[0];
  26 +
  27 +       if (fb->modifier == DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED)
  28 +               fbinfo->bpp |= BIT(31);
  29 +
  30         /* A bug in the firmware makes it so that if the fb->base is
  31          * set to nonzero, the configured pitch gets overwritten with
  32          * the previous pitch.  So, to get the configured pitch