drm/i915: honour forced connector modes
In the move over to use BIOS connector configs, we lost the ability to
force a specific set of connectors on or off. Try to remedy that by
dropping back to the old behavior if we detect a hard coded connector
config that tries to enable a connector (disabling is easy!).
Based on earlier patches by Jesse Barnes.
v2: Remove Jesse's patch
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
index cf052a3..b992133 100644
--- a/drivers/gpu/drm/i915/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -332,24 +332,6 @@
int num_connectors_enabled = 0;
int num_connectors_detected = 0;
- /*
- * If the user specified any force options, just bail here
- * and use that config.
- */
- for (i = 0; i < fb_helper->connector_count; i++) {
- struct drm_fb_helper_connector *fb_conn;
- struct drm_connector *connector;
-
- fb_conn = fb_helper->connector_info[i];
- connector = fb_conn->connector;
-
- if (!enabled[i])
- continue;
-
- if (connector->force != DRM_FORCE_UNSPECIFIED)
- return false;
- }
-
save_enabled = kcalloc(dev->mode_config.num_connector, sizeof(bool),
GFP_KERNEL);
if (!save_enabled)
@@ -375,8 +357,18 @@
continue;
}
+ if (connector->force == DRM_FORCE_OFF) {
+ DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",
+ connector->name);
+ enabled[i] = false;
+ continue;
+ }
+
encoder = connector->encoder;
if (!encoder || WARN_ON(!encoder->crtc)) {
+ if (connector->force > DRM_FORCE_OFF)
+ goto bail;
+
DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",
connector->name);
enabled[i] = false;
@@ -395,8 +387,7 @@
for (j = 0; j < fb_helper->connector_count; j++) {
if (crtcs[j] == new_crtc) {
DRM_DEBUG_KMS("fallback: cloned configuration\n");
- fallback = true;
- goto out;
+ goto bail;
}
}
@@ -467,8 +458,8 @@
fallback = true;
}
-out:
if (fallback) {
+bail:
DRM_DEBUG_KMS("Not using firmware configuration\n");
memcpy(enabled, save_enabled, dev->mode_config.num_connector);
kfree(save_enabled);