target/linux/bcm27xx/patches-5.10/950-0673-vc4-drv-Only-notify-firmware-of-display-done-with-km.patch

   1 From b14001459c04ec0d4a99c1a422077fbce5a0aebc Mon Sep 17 00:00:00 2001
   2 From: Dom Cobley <popcornmix@gmail.com>
   3 Date: Mon, 5 Jul 2021 11:43:12 +0100
   4 Subject: [PATCH] vc4/drv: Only notify firmware of display done with
   5  kms
   6
   7 fkms driver still wants firmware display to be active
   8
   9 Signed-off-by: Dom Cobley <popcornmix@gmail.com>
  10 ---
  11  drivers/gpu/drm/vc4/vc4_drv.c | 14 +++++++++++++-
  12  1 file changed, 13 insertions(+), 1 deletion(-)
  13
  14 --- a/drivers/gpu/drm/vc4/vc4_drv.c
  15 +++ b/drivers/gpu/drm/vc4/vc4_drv.c
  16 @@ -258,6 +258,18 @@ const struct of_device_id vc4_dma_range_
  17         {}
  18  };
  19
  20 +/*
  21 + * we need this helper function for determining presence of fkms
  22 + * before it's been bound
  23 + */
  24 +static bool firmware_kms(void)
  25 +{
  26 +       return of_device_is_available(of_find_compatible_node(NULL, NULL,
  27 +              "raspberrypi,rpi-firmware-kms")) ||
  28 +              of_device_is_available(of_find_compatible_node(NULL, NULL,
  29 +              "raspberrypi,rpi-firmware-kms-2711"));
  30 +}
  31 +
  32  static int vc4_drm_bind(struct device *dev)
  33  {
  34         struct platform_device *pdev = to_platform_device(dev);
  35 @@ -318,7 +330,7 @@ static int vc4_drm_bind(struct device *d
  36
  37         drm_fb_helper_remove_conflicting_framebuffers(NULL, "vc4drmfb", false);
  38
  39 -       if (vc4->firmware) {
  40 +       if (vc4->firmware && !firmware_kms()) {
  41                 ret = rpi_firmware_property(vc4->firmware,
  42                                             RPI_FIRMWARE_NOTIFY_DISPLAY_DONE,
  43                                             NULL, 0);