In the past the ast driver relied upon the fbdev emulation helpers to
call ->load_lut at boot-up. But since
commit b8e2b0199cc377617dc238f5106352c06dcd3fa2
Author: Peter Rosin <peda@xxxxxxxxxx>
Date: Tue Jul 4 12:36:57 2017 +0200
drm/fb-helper: factor out pseudo-palette
that's cleaned up and drivers are expected to boot into a consistent
lut state. This patch fixes that.
Fixes: b8e2b0199cc3 ("drm/fb-helper: factor out pseudo-palette")
Cc: Peter Rosin <peda@xxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v4.14+
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=198123
Cc: Bill Fraser <bill.fraser@xxxxxxxxx>
Reported-and-Tested-by: Bill Fraser <bill.fraser@xxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
drivers/gpu/drm/ast/ast_mode.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index 9555a3542022..831b73392d82 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -644,6 +644,7 @@ static void ast_crtc_commit(struct drm_crtc *crtc)
{
struct ast_private *ast = crtc->dev->dev_private;
ast_set_index_reg_mask(ast, AST_IO_SEQ_PORT, 0x1, 0xdf, 0);
+ ast_crtc_load_lut(crtc);
}
--
2.15.1
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