[Intel-gfx] [PATCH] drm/i915: honour forced connector modes
Chris Wilson
chris at chris-wilson.co.uk
Thu May 15 11:55:41 CEST 2014
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 at linux.intel.com>
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Jesse Barnes <jbarnes at virtuousgeek.org>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
drivers/gpu/drm/i915/intel_fbdev.c | 35 +++++++++++++----------------------
1 file changed, 13 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
index f5821c0..cc2dd5e 100644
--- a/drivers/gpu/drm/i915/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -306,24 +306,6 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
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)
@@ -349,8 +331,18 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
continue;
}
+ if (connector->force == DRM_FORCE_OFF) {
+ DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",
+ drm_get_connector_name(connector));
+ 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",
drm_get_connector_name(connector));
enabled[i] = false;
@@ -369,8 +361,7 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
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;
}
}
@@ -418,7 +409,7 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
}
crtcs[i] = new_crtc;
- DRM_DEBUG_KMS("connector %s on pipe %d [CRTC:%d]: %dx%d%s\n",
+ DRM_DEBUG_KMS("connector %s on pipe %c [CRTC:%d]: %dx%d%s\n",
drm_get_connector_name(connector),
pipe_name(to_intel_crtc(encoder->crtc)->pipe),
encoder->crtc->base.id,
@@ -441,8 +432,8 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
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);
--
1.7.9.5
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