So we can call it earlier for use in computing mode config changes.
Signed-off-by: Jesse Barnes <jbar...@virtuousgeek.org>
---
drivers/gpu/drm/i915/intel_display.c | 63 +++++++++++++++++++++++-------------
1 file changed, 41 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 1d0425d..a9c1c32 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10938,6 +10938,42 @@ static void update_scanline_offset(struct intel_crtc
*crtc)
crtc->scanline_offset = 1;
}
+static int intel_modeset_compute_config(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ struct drm_framebuffer *fb,
+ unsigned *modeset_pipes,
+ unsigned *prepare_pipes,
+ unsigned *disable_pipes)
+{
+ struct intel_crtc_config *pipe_config = NULL;
+ int ret = 0;
+
+ intel_modeset_affected_pipes(crtc, modeset_pipes,
+ prepare_pipes, disable_pipes);
+
+ if (!modeset_pipes)
+ goto out;
+
+ /* Hack: Because we don't (yet) support global modeset on multiple
+ * crtcs, we don't keep track of the new mode for more than one crtc.
+ * Hence simply check whether any bit is set in modeset_pipes in all the
+ * pieces of code that are not yet converted to deal with mutliple crtcs
+ * changing their mode at the same time. */
+ pipe_config = intel_modeset_pipe_config(crtc, fb, mode);
+ if (IS_ERR(pipe_config)) {
+ ret = PTR_ERR(pipe_config);
+ pipe_config = NULL;
+
+ goto out;
+ }
+ intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config,
+ "[modeset]");
+ to_intel_crtc(crtc)->new_config = pipe_config;
+
+out:
+ return ret;
+}
+
static int __intel_set_mode(struct drm_crtc *crtc,
struct drm_display_mode *mode,
int x, int y, struct drm_framebuffer *fb)
@@ -10950,33 +10986,17 @@ static int __intel_set_mode(struct drm_crtc *crtc,
unsigned disable_pipes, prepare_pipes, modeset_pipes;
int ret = 0;
+ ret = intel_modeset_compute_config(crtc, mode, fb, &modeset_pipes,
+ &prepare_pipes, &disable_pipes);
+ if (ret)
+ return ret;
+
saved_mode = kmalloc(sizeof(*saved_mode), GFP_KERNEL);
if (!saved_mode)
return -ENOMEM;
- intel_modeset_affected_pipes(crtc, &modeset_pipes,
- &prepare_pipes, &disable_pipes);
-
*saved_mode = crtc->mode;
- /* Hack: Because we don't (yet) support global modeset on multiple
- * crtcs, we don't keep track of the new mode for more than one crtc.
- * Hence simply check whether any bit is set in modeset_pipes in all the
- * pieces of code that are not yet converted to deal with mutliple crtcs
- * changing their mode at the same time. */
- if (modeset_pipes) {
- pipe_config = intel_modeset_pipe_config(crtc, fb, mode);
- if (IS_ERR(pipe_config)) {
- ret = PTR_ERR(pipe_config);
- pipe_config = NULL;
-
- goto out;
- }
- intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config,
- "[modeset]");
- to_intel_crtc(crtc)->new_config = pipe_config;
- }
-
/*
* See if the config requires any additional preparation, e.g.
* to adjust global state with pipes off. We need to do this
@@ -11070,7 +11090,6 @@ done:
if (ret && crtc->enabled)
crtc->mode = *saved_mode;
-out:
kfree(pipe_config);
kfree(saved_mode);
return ret;
--
1.9.1
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