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[3/3] gma500: Consider CRTC initially active.

Message ID 20120813162915.1375.65744.stgit@bluebook (mailing list archive)
State New, archived
Headers show

Commit Message

Alan Cox Aug. 13, 2012, 4:31 p.m. UTC
[this one ideally should make 3.6 - it fixes the very annoying mode setting bug]

From: Forest Bond <forest.bond@rapidrollout.com>

This causes the pipe to be forced off prior to initial mode set, which
roughly mirrors the behavior of the i915 driver.  It fixes initial mode
setting on my Intel DN2800MT (Cedarview) board.  Without it, mode
setting triggers an out-of-range error from the monitor for most modes,
but only on initial configuration (i.e. they can be configured
successfully from userspace after that).

Signed-off-by: Forest Bond <forest.bond@rapidrollout.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Stables <stable@kernel.org>

 drivers/gpu/drm/gma500/psb_intel_display.c |    3 +++
 1 file changed, 3 insertions(+)
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diff --git a/drivers/gpu/drm/gma500/psb_intel_display.c b/drivers/gpu/drm/gma500/psb_intel_display.c
index 30dc22a..8033526 100644
--- a/drivers/gpu/drm/gma500/psb_intel_display.c
+++ b/drivers/gpu/drm/gma500/psb_intel_display.c
@@ -1362,6 +1362,9 @@  void psb_intel_crtc_init(struct drm_device *dev, int pipe,
 	    (struct drm_connector **) (psb_intel_crtc + 1);
 	psb_intel_crtc->mode_set.num_connectors = 0;
 	psb_intel_cursor_init(dev, psb_intel_crtc);
+	/* Set to true so that the pipe is forced off on initial config. */
+	psb_intel_crtc->active = true;
 int psb_intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,