Note that this function already clobbers the mode config state,
so we have to clean things up if something fails.
Signed-off-by: Daniel Vetter <daniel.vet...@ffwll.ch>
---
drivers/gpu/drm/i915/intel_display.c | 121 +++++++++++++++++++---------------
1 file changed, 67 insertions(+), 54 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index b109710..d11d866 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6765,64 +6765,15 @@ intel_set_config_compute_mode_changes(struct
drm_mode_set *set,
}
}
-static int intel_crtc_set_config(struct drm_mode_set *set)
+static int
+intel_set_config_update_output_state(struct drm_device *dev,
+ struct drm_mode_set *set,
+ struct intel_set_config *config)
{
- struct drm_device *dev;
struct drm_crtc *new_crtc;
struct drm_encoder *new_encoder;
- struct drm_framebuffer *old_fb = NULL;
struct drm_connector *connector;
- int count = 0, ro;
- struct drm_mode_set save_set;
- struct intel_set_config *config;
- int ret;
- int i;
-
- DRM_DEBUG_KMS("\n");
-
- if (!set)
- return -EINVAL;
-
- if (!set->crtc)
- return -EINVAL;
-
- if (!set->crtc->helper_private)
- return -EINVAL;
-
- if (!set->mode)
- set->fb = NULL;
-
- if (set->fb) {
- DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i
%i)\n",
- set->crtc->base.id, set->fb->base.id,
- (int)set->num_connectors, set->x, set->y);
- } else {
- DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id);
- return intel_crtc_helper_disable(set->crtc);
- }
-
- dev = set->crtc->dev;
-
- ret = -ENOMEM;
- config = kzalloc(sizeof(*config), GFP_KERNEL);
- if (!config)
- goto out_config;
-
- ret = intel_set_config_save_state(dev, config);
- if (ret)
- goto out_config;
-
- save_set.crtc = set->crtc;
- save_set.mode = &set->crtc->mode;
- save_set.x = set->crtc->x;
- save_set.y = set->crtc->y;
- save_set.fb = set->crtc->fb;
-
- /* Compute whether we need a full modeset, only an fb base update or no
- * change at all. In the future we might also check whether only the
- * mode changed, e.g. for LVDS where we only change the panel fitter in
- * such cases. */
- intel_set_config_compute_mode_changes(set, config);
+ int count, ro;
/* a) traverse passed in connector list and get encoders for them */
count = 0;
@@ -6883,6 +6834,68 @@ static int intel_crtc_set_config(struct drm_mode_set
*set)
}
}
+ return 0;
+}
+
+static int intel_crtc_set_config(struct drm_mode_set *set)
+{
+ struct drm_device *dev;
+ struct drm_framebuffer *old_fb = NULL;
+ struct drm_mode_set save_set;
+ struct intel_set_config *config;
+ int ret;
+ int i;
+
+ DRM_DEBUG_KMS("\n");
+
+ if (!set)
+ return -EINVAL;
+
+ if (!set->crtc)
+ return -EINVAL;
+
+ if (!set->crtc->helper_private)
+ return -EINVAL;
+
+ if (!set->mode)
+ set->fb = NULL;
+
+ if (set->fb) {
+ DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i
%i)\n",
+ set->crtc->base.id, set->fb->base.id,
+ (int)set->num_connectors, set->x, set->y);
+ } else {
+ DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id);
+ return intel_crtc_helper_disable(set->crtc);
+ }
+
+ dev = set->crtc->dev;
+
+ ret = -ENOMEM;
+ config = kzalloc(sizeof(*config), GFP_KERNEL);
+ if (!config)
+ goto out_config;
+
+ ret = intel_set_config_save_state(dev, config);
+ if (ret)
+ goto out_config;
+
+ save_set.crtc = set->crtc;
+ save_set.mode = &set->crtc->mode;
+ save_set.x = set->crtc->x;
+ save_set.y = set->crtc->y;
+ save_set.fb = set->crtc->fb;
+
+ /* Compute whether we need a full modeset, only an fb base update or no
+ * change at all. In the future we might also check whether only the
+ * mode changed, e.g. for LVDS where we only change the panel fitter in
+ * such cases. */
+ intel_set_config_compute_mode_changes(set, config);
+
+ ret = intel_set_config_update_output_state(dev, set, config);
+ if (ret)
+ goto fail;
+
if (config->mode_changed) {
set->crtc->enabled = drm_helper_crtc_in_use(set->crtc);
if (set->crtc->enabled) {
--
1.7.10.4
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