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drm/i915: Ignore skl+ for debugfs/i915_sr_status 

There is no easily digestible single self-refresh status bit, so don't
report one for debugfs/i915_sr_status on gen9+. For the moment this
avoids a read of the non-existent WM1_LP_ILK register.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170309142049.16033-1-chris@chris-wilson.co.uk
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
This commit is contained in:
Chris Wilson 2017-03-09 14:20:49 +00:00
parent 9735b04d0c
commit 7342a72cc4
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/i915/i915_debugfs.c
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@ -1749,7 +1749,9 @@ static int i915_sr_status(struct seq_file *m, void *unused)
intel_runtime_pm_get(dev_priv);
intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
if (HAS_PCH_SPLIT(dev_priv))
if (INTEL_GEN(dev_priv) >= 9)
/* no global SR status; inspect per-plane WM */;
else if (HAS_PCH_SPLIT(dev_priv))
sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
else if (IS_I965GM(dev_priv) || IS_G4X(dev_priv) ||
IS_I945G(dev_priv) || IS_I945GM(dev_priv))