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drm/i915: Notify GuC rc6 state 

If rc6 is enabled, notify GuC so it can do proper forcewake before
command submission.

Signed-off-by: Alex Dai <yu.dai@intel.com>
Reviewed-by: Tom O'Rourke <Tom.O'Rourke@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Alex Dai 2015-08-18 14:34:47 -07:00 committed by Daniel Vetter
parent aa557ab015
commit f5d3c3eaab
1 changed files with 15 additions and 0 deletions
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15
drivers/gpu/drm/i915/i915_guc_submission.c
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@ -151,6 +151,18 @@ static int host2guc_release_doorbell(struct intel_guc *guc,
return host2guc_action(guc, data, 2);
}
static int host2guc_sample_forcewake(struct intel_guc *guc,
struct i915_guc_client *client)
{
struct drm_i915_private *dev_priv = guc_to_i915(guc);
u32 data[2];
data[0] = HOST2GUC_ACTION_SAMPLE_FORCEWAKE;
data[1] = (intel_enable_rc6(dev_priv->dev)) ? 1 : 0;
return host2guc_action(guc, data, 2);
}
/*
* Initialise, update, or clear doorbell data shared with the GuC
*
@ -874,6 +886,9 @@ int i915_guc_submission_enable(struct drm_device *dev)
}
guc->execbuf_client = client;
host2guc_sample_forcewake(guc, client);
return 0;
}