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| author | Yannick Fertre <yannick.fertre@foss.st.com> | 2024-07-12 15:13:44 +0200 |
|---|---|---|
| committer | Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com> | 2024-07-19 11:34:50 +0200 |
| commit | 02fa62d41c8abff945bae5bfc3ddcf4721496aca (patch) | |
| tree | 575f4172f77d58b53e7410f60e3b52abb833774a | |
| parent | d5070c9b29440c270b534bbacd636b8fa558e82b (diff) | |
| download | lwn-02fa62d41c8abff945bae5bfc3ddcf4721496aca.tar.gz lwn-02fa62d41c8abff945bae5bfc3ddcf4721496aca.zip | |
drm/stm: ltdc: reset plane transparency after plane disable
The plane's opacity should be reseted while the plane
is disabled. It prevents from seeing a possible global
or layer background color set earlier.
Signed-off-by: Yannick Fertre <yannick.fertre@foss.st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240712131344.98113-1-yannick.fertre@foss.st.com
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
| -rw-r--r-- | drivers/gpu/drm/stm/ltdc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index 0a68a4b17b7d..93ec0c8322b2 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -1508,6 +1508,9 @@ static void ltdc_plane_atomic_disable(struct drm_plane *plane, /* Disable layer */ regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_LEN | LXCR_CLUTEN | LXCR_HMEN, 0); + /* Reset the layer transparency to hide any related background color */ + regmap_write_bits(ldev->regmap, LTDC_L1CACR + lofs, LXCACR_CONSTA, 0x00); + /* Commit shadow registers = update plane at next vblank */ if (ldev->caps.plane_reg_shadow) regmap_write_bits(ldev->regmap, LTDC_L1RCR + lofs, |