Hi Maxime
On Wed, 8 Jul 2020 at 18:42, Maxime Ripard <maxime@xxxxxxxxxx> wrote:
>
> The vc4 atomic commit loop has an handrolled loop that is basically
> identical to for_each_new_crtc_state, let's convert it to that helper.
>
> Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
> ---
> drivers/gpu/drm/vc4/vc4_kms.c | 9 ++++-----
> 1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
> index 210cc2408087..717673b18132 100644
> --- a/drivers/gpu/drm/vc4/vc4_kms.c
> +++ b/drivers/gpu/drm/vc4/vc4_kms.c
> @@ -152,14 +152,13 @@ vc4_atomic_complete_commit(struct drm_atomic_state *state)
> struct drm_device *dev = state->dev;
> struct vc4_dev *vc4 = to_vc4_dev(dev);
> struct vc4_hvs *hvs = vc4->hvs;
> - struct vc4_crtc *vc4_crtc;
> + struct drm_crtc_state *new_crtc_state;
> + struct drm_crtc *crtc;
> int i;
>
> - for (i = 0; i < dev->mode_config.num_crtc; i++) {
> - if (!state->crtcs[i].ptr || !state->crtcs[i].commit)
> - continue;
> + for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
> + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
for_each_new_crtc_in_state doesn't check !state->crtcs[i].commit as
the hand rolled loop did. Sorry, this is my lack of knowledge, but
does that actually make any real difference?
I see nothing wrong in calling vc4_hvs_mask_underrun multiple times
anyway, so it's most likely going to be harmless anyway, but wanted to
query it.
Dave
>
> - vc4_crtc = to_vc4_crtc(state->crtcs[i].ptr);
> vc4_hvs_mask_underrun(dev, vc4_crtc->channel);
> }
>
> --
> git-series 0.9.1
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