target/linux/bcm27xx/patches-5.10/950-0566-drm-vc4-Register-dsi0-as-the-correct-vc4-encoder-typ.patch

   1 From b627cebfc64dd944b9571203e30456efbc0101c3 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Mon, 8 Feb 2021 11:22:01 +0000
   4 Subject: [PATCH] drm/vc4: Register dsi0 as the correct vc4 encoder
   5  type
   6
   7 vc4_dsi was registering both dsi0 and dsi1 as VC4_ENCODER_TYPE_DSI1
   8 which seemed to work OK for a single DSI display, but fails
   9 if there are two DSI displays connected.
  10
  11 Update to register the correct type.
  12
  13 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  14 ---
  15  drivers/gpu/drm/vc4/vc4_dsi.c | 3 ++-
  16  1 file changed, 2 insertions(+), 1 deletion(-)
  17
  18 --- a/drivers/gpu/drm/vc4/vc4_dsi.c
  19 +++ b/drivers/gpu/drm/vc4/vc4_dsi.c
  20 @@ -1506,7 +1506,8 @@ static int vc4_dsi_bind(struct device *d
  21                 return -ENOMEM;
  22
  23         INIT_LIST_HEAD(&dsi->bridge_chain);
  24 -       vc4_dsi_encoder->base.type = VC4_ENCODER_TYPE_DSI1;
  25 +       vc4_dsi_encoder->base.type = dsi->variant->port ?
  26 +                       VC4_ENCODER_TYPE_DSI1 : VC4_ENCODER_TYPE_DSI0;
  27         vc4_dsi_encoder->dsi = dsi;
  28         dsi->encoder = &vc4_dsi_encoder->base.base;
  29