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| author | Yannick Fertré <yannick.fertre@st.com> | 2019-04-01 09:24:17 +0200 |
|---|---|---|
| committer | Benjamin Gaignard <benjamin.gaignard@linaro.org> | 2019-04-24 13:51:47 +0200 |
| commit | 8ceb8568d6e8d53dc000a9eeacd47c8f298c38f0 (patch) | |
| tree | 89aa5853342ea261a8aa40bde8f5c8d1ccead4a0 /drivers/gpu/drm/stm/ltdc.c | |
| parent | drm/stm: ltdc: fix data enable polarity (diff) | |
| download | linux-8ceb8568d6e8d53dc000a9eeacd47c8f298c38f0.tar.xz linux-8ceb8568d6e8d53dc000a9eeacd47c8f298c38f0.zip | |
drm/stm: ltdc: update planes at next vblank to avoid partial refresh
Plane updates must be synchronized on vblank with the shadow register mechanism
to avoid partial refresh on screen.
Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1554103457-29595-1-git-send-email-yannick.fertre@st.com
Diffstat (limited to 'drivers/gpu/drm/stm/ltdc.c')
| -rw-r--r-- | drivers/gpu/drm/stm/ltdc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index 02f67fa9881f..cde2f18ce1c1 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -426,8 +426,8 @@ static void ltdc_crtc_atomic_enable(struct drm_crtc *crtc, /* Enable IRQ */ reg_set(ldev->regs, LTDC_IER, IER_RRIE | IER_FUIE | IER_TERRIE); - /* Immediately commit the planes */ - reg_set(ldev->regs, LTDC_SRCR, SRCR_IMR); + /* Commit shadow registers = update planes at next vblank */ + reg_set(ldev->regs, LTDC_SRCR, SRCR_VBR); /* Enable LTDC */ reg_set(ldev->regs, LTDC_GCR, GCR_LTDCEN); |