[PATCH 1/2] drm/vc4: kms: Assign a FIFO to enabled CRTCs instead of active

[Dave Stevenson]

Hi Maxime

Thanks for the patch.

On Fri, 18 Sep 2020 at 15:59, Maxime Ripard <maxime at cerno.tech> wrote:
>
> The HVS has three FIFOs that can be assigned to a number of PixelValves
> through a mux.
>
> However, changing that FIFO requires that we disable and then enable the
> pixelvalve, so we want to assign FIFOs to all the enabled CRTCs, and not
> just the active ones.
>
> Fixes: 87ebcd42fb7b ("drm/vc4: crtc: Assign output to channel automatically")
> Signed-off-by: Maxime Ripard <maxime at cerno.tech>

Tested-by: Dave Stevenson <dave.stevenson at raspberrypi.com>
Reviewed-by: Dave Stevenson <dave.stevenson at raspberrypi.com>

> ---
>  drivers/gpu/drm/vc4/vc4_kms.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
> index af3ee3dcdab6..01fa60844695 100644
> --- a/drivers/gpu/drm/vc4/vc4_kms.c
> +++ b/drivers/gpu/drm/vc4/vc4_kms.c
> @@ -643,7 +643,7 @@ vc4_atomic_check(struct drm_device *dev, struct drm_atomic_state *state)
>                 struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
>                 unsigned int matching_channels;
>
> -               if (!crtc_state->active)
> +               if (!crtc_state->enable)
>                         continue;
>
>                 /*
> --
> 2.26.2
>