target/linux/bcm27xx/patches-5.4/950-0605-drm-vc4-The-check-for-assigned-HVS-channels-is-not-a.patch

   1 From 76534156ad6e835ad89135210d565dd5f58e91ab Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Tue, 11 Feb 2020 15:36:59 +0000
   4 Subject: [PATCH] drm/vc4: The check for assigned HVS channels is not
   5  applicable firmware_kms
   6
   7 Channel assignments is only in full KMS, so skip the check
   8 if in firmware kms mode.
   9
  10 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  11 ---
  12  drivers/gpu/drm/vc4/vc4_kms.c | 3 ++-
  13  1 file changed, 2 insertions(+), 1 deletion(-)
  14
  15 --- a/drivers/gpu/drm/vc4/vc4_kms.c
  16 +++ b/drivers/gpu/drm/vc4/vc4_kms.c
  17 @@ -579,6 +579,7 @@ static int
  18  vc4_atomic_check(struct drm_device *dev, struct drm_atomic_state *state)
  19  {
  20         unsigned long unassigned_channels = GENMASK(NUM_CHANNELS - 1, 0);
  21 +       struct vc4_dev *vc4 = to_vc4_dev(state->dev);
  22         struct drm_crtc_state *crtc_state;
  23         struct drm_crtc *crtc;
  24         int i, ret;
  25 @@ -590,7 +591,7 @@ vc4_atomic_check(struct drm_device *dev,
  26                 bool is_assigned = false;
  27                 unsigned int channel;
  28
  29 -               if (!crtc_state->active)
  30 +               if (!crtc_state->active || vc4->firmware_kms)
  31                         continue;
  32
  33                 /*