On Sat 7.Aug'10 at 11:01:35 +0100, Chris Wilson wrote:
>
> v2: Upgrade failure messages to DRM_ERROR on the suggestion of
> Eric Anholt. We do not expect to hit these conditions as they reflect
> programming errors, so if we do we want to be notified.
My dmesg from 2.6.36-rc5 is showing one of the messages introduced
in this patch. So I am notifying it :-)
> --- a/drivers/gpu/drm/i915/intel_lvds.c
> +++ b/drivers/gpu/drm/i915/intel_lvds.c
> @@ -96,7 +96,7 @@ static u32 intel_lvds_get_max_backlight(struct drm_device
> *dev)
> static void intel_lvds_set_power(struct drm_device *dev, bool on)
> {
> struct drm_i915_private *dev_priv = dev->dev_private;
> - u32 pp_status, ctl_reg, status_reg, lvds_reg;
> + u32 ctl_reg, status_reg, lvds_reg;
>
> if (HAS_PCH_SPLIT(dev)) {
> ctl_reg = PCH_PP_CONTROL;
> @@ -114,9 +114,8 @@ static void intel_lvds_set_power(struct drm_device *dev,
> bool on)
>
> I915_WRITE(ctl_reg, I915_READ(ctl_reg) |
> POWER_TARGET_ON);
> - do {
> - pp_status = I915_READ(status_reg);
> - } while ((pp_status & PP_ON) == 0);
> + if (wait_for(I915_READ(status_reg) & PP_ON, 1000, 0))
> + DRM_ERROR("timed out waiting to enable LVDS pipe");
[ 0.954724] ACPI: Battery Slot [BAT0] (battery present)
[ 2.266008] [drm:intel_lvds_set_power] *ERROR* timed out waiting to enable
LVDS pipeConsole: switching to colour frame buffer device 160x50
[ 2.274860] fb0: inteldrmfb frame buffer device
But I have this 1+ sec gap in there for as long as I remember.
Full dmesg is here:
http://www.aei.mpg.de/~crmafra/dmesg-2.6.36-rc5.txt
Is there anything else I can provide to help this?
I would love to get rid of the 1 sec delay there :-)
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