[PATCH 5/7] drm/ast: Support ASTDP and VGA at the same time

[Thomas Zimmermann]

AST2600 can host VGA and DisplayPort outputs. Support both on the
same device. As userspace can often only support a single output per
CRTC, connectors are prioritized against each other by the probe
helpers.

Reported-by: Shixiong Ou <oushixiong at kylinos.cn>
Closes: https://lore.kernel.org/dri-devel/20240711090102.352213-1-oushixiong1025@163.com/
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
---
 drivers/gpu/drm/ast/ast_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
index 0637abb70361..d43aedaa8dd0 100644
--- a/drivers/gpu/drm/ast/ast_main.c
+++ b/drivers/gpu/drm/ast/ast_main.c
@@ -115,7 +115,7 @@ static void ast_detect_tx_chip(struct ast_device *ast, bool need_post)
 	} else if (IS_AST_GEN7(ast)) {
 		if (ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xD1, TX_TYPE_MASK) ==
 		    ASTDP_DPMCU_TX) {
-			ast->tx_chip_types = AST_TX_ASTDP_BIT;
+			ast->tx_chip_types |= AST_TX_ASTDP_BIT;
 			ast_dp_launch(&ast->base);
 		}
 	}
-- 
2.45.2