drm/ast: Read encoder possible-CRTC mask from drm_crtc_mask()

Read the encoder's possible-CRTC mask from the involved CRTC instead
of hard-coding it.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220207141544.30015-8-tzimmermann@suse.de

diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index bd01aea..09995a3 100644 (file)
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -1341,7 +1341,7 @@ static int ast_vga_output_init(struct ast_private *ast)
        ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_DAC);
        if (ret)
                return ret;
-       encoder->possible_crtcs = 1;
+       encoder->possible_crtcs = drm_crtc_mask(crtc);
 
        ret = ast_vga_connector_init(dev, ast_vga_connector);
        if (ret)