Read the display modes from the connectors DDC helper, which also
updates the connector's EDID property. The code for the connector's
.get_modes helper is now shared between VGA and SIL164.

Signed-off-by: Thomas Zimmermann <[email protected]>
---
 drivers/gpu/drm/ast/ast_mode.c | 57 ++--------------------------------
 1 file changed, 2 insertions(+), 55 deletions(-)

diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index e19dd2f9b3ce..4ff8ec1c8931 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -1302,37 +1302,19 @@ static int ast_crtc_init(struct drm_device *dev)
 
 static int ast_vga_connector_helper_get_modes(struct drm_connector *connector)
 {
-       struct ast_vga_connector *ast_vga_connector = 
to_ast_vga_connector(connector);
        struct drm_device *dev = connector->dev;
        struct ast_private *ast = to_ast_private(dev);
-       struct edid *edid;
        int count;
 
-       if (!ast_vga_connector->i2c)
-               goto err_drm_connector_update_edid_property;
-
        /*
         * Protect access to I/O registers from concurrent modesetting
         * by acquiring the I/O-register lock.
         */
        mutex_lock(&ast->ioregs_lock);
-
-       edid = drm_get_edid(connector, &ast_vga_connector->i2c->adapter);
-       if (!edid)
-               goto err_mutex_unlock;
-
+       count = drm_connector_helper_get_modes_from_ddc(connector);
        mutex_unlock(&ast->ioregs_lock);
 
-       count = drm_add_edid_modes(connector, edid);
-       kfree(edid);
-
        return count;
-
-err_mutex_unlock:
-       mutex_unlock(&ast->ioregs_lock);
-err_drm_connector_update_edid_property:
-       drm_connector_update_edid_property(connector, NULL);
-       return 0;
 }
 
 static const struct drm_connector_helper_funcs ast_vga_connector_helper_funcs 
= {
@@ -1406,43 +1388,8 @@ static int ast_vga_output_init(struct ast_private *ast)
  * SIL164 Connector
  */
 
-static int ast_sil164_connector_helper_get_modes(struct drm_connector 
*connector)
-{
-       struct ast_sil164_connector *ast_sil164_connector = 
to_ast_sil164_connector(connector);
-       struct drm_device *dev = connector->dev;
-       struct ast_private *ast = to_ast_private(dev);
-       struct edid *edid;
-       int count;
-
-       if (!ast_sil164_connector->i2c)
-               goto err_drm_connector_update_edid_property;
-
-       /*
-        * Protect access to I/O registers from concurrent modesetting
-        * by acquiring the I/O-register lock.
-        */
-       mutex_lock(&ast->ioregs_lock);
-
-       edid = drm_get_edid(connector, &ast_sil164_connector->i2c->adapter);
-       if (!edid)
-               goto err_mutex_unlock;
-
-       mutex_unlock(&ast->ioregs_lock);
-
-       count = drm_add_edid_modes(connector, edid);
-       kfree(edid);
-
-       return count;
-
-err_mutex_unlock:
-       mutex_unlock(&ast->ioregs_lock);
-err_drm_connector_update_edid_property:
-       drm_connector_update_edid_property(connector, NULL);
-       return 0;
-}
-
 static const struct drm_connector_helper_funcs 
ast_sil164_connector_helper_funcs = {
-       .get_modes = ast_sil164_connector_helper_get_modes,
+       .get_modes = ast_vga_connector_helper_get_modes, // same as VGA 
connector
 };
 
 static const struct drm_connector_funcs ast_sil164_connector_funcs = {
-- 
2.36.1

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