| Message ID | 1483972382-15984-1-git-send-email-a.hajda@samsung.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
Applied. Thanks. 2017년 01월 09일 23:33에 Andrzej Hajda 이(가) 쓴 글: > Improper usage of DECON_UPDATE register leads to subtle errors. > If it set in decon_commit when there are no active windows it results > in slow registry updates - all subsequent shadow registry updates takes more > than full vblank. On the other side if it is not set when there are > active windows it results in garbage on the screen after suspend/resume of > FB console. > > The patch hopefully fixes it. > > Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> > --- > drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 7 +++---- > 1 file changed, 3 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c > index ca75fe1..f15d9b1 100644 > --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c > +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c > @@ -209,8 +209,6 @@ static void decon_commit(struct exynos_drm_crtc *crtc) > > /* enable output and display signal */ > decon_set_bits(ctx, DECON_VIDCON0, VIDCON0_ENVID | VIDCON0_ENVID_F, ~0); > - > - decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0); > } > > static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win, > @@ -361,8 +359,9 @@ static void decon_atomic_flush(struct exynos_drm_crtc *crtc) > for (i = ctx->first_win; i < WINDOWS_NR; i++) > decon_shadow_protect_win(ctx, i, false); > > - /* standalone update */ > - decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0); > + /* update iff there are active windows */ > + if (crtc->base.state->plane_mask) > + decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0); > > if (ctx->out_type & IFTYPE_I80) > set_bit(BIT_WIN_UPDATED, &ctx->flags); > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c index ca75fe1..f15d9b1 100644 --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c @@ -209,8 +209,6 @@ static void decon_commit(struct exynos_drm_crtc *crtc) /* enable output and display signal */ decon_set_bits(ctx, DECON_VIDCON0, VIDCON0_ENVID | VIDCON0_ENVID_F, ~0); - - decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0); } static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win, @@ -361,8 +359,9 @@ static void decon_atomic_flush(struct exynos_drm_crtc *crtc) for (i = ctx->first_win; i < WINDOWS_NR; i++) decon_shadow_protect_win(ctx, i, false); - /* standalone update */ - decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0); + /* update iff there are active windows */ + if (crtc->base.state->plane_mask) + decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0); if (ctx->out_type & IFTYPE_I80) set_bit(BIT_WIN_UPDATED, &ctx->flags);
Improper usage of DECON_UPDATE register leads to subtle errors. If it set in decon_commit when there are no active windows it results in slow registry updates - all subsequent shadow registry updates takes more than full vblank. On the other side if it is not set when there are active windows it results in garbage on the screen after suspend/resume of FB console. The patch hopefully fixes it. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> --- drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)