diff options
| author | Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> | 2018-01-03 13:38:24 -0800 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2018-01-12 15:34:14 -0800 |
| commit | c9ef291a7e79ebc9fb1723090c12fae626e74c46 (patch) | |
| tree | 5196ad5ca38f2bdc5f31a4bedb049786631b1e3a /drivers/gpu/drm/i915/i915_debugfs.c | |
| parent | 4371d89601c301fdbbdb9616c887ae77b38f6404 (diff) | |
drm/i915/psr: Avoid initializing PSR if there is no sink support.
DPCD read for the eDP is complete by the time intel_psr_init() is
called, which means we can avoid initializing PSR structures and state
if there is no sink support.
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180103213824.1405-3-dhinakaran.pandiyan@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 6890340387b7..cc659b4b2a45 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2521,14 +2521,19 @@ static int i915_edp_psr_status(struct seq_file *m, void *data) u32 stat[3]; enum pipe pipe; bool enabled = false; + bool sink_support; if (!HAS_PSR(dev_priv)) return -ENODEV; + sink_support = dev_priv->psr.sink_support; + seq_printf(m, "Sink_Support: %s\n", yesno(sink_support)); + if (!sink_support) + return 0; + intel_runtime_pm_get(dev_priv); mutex_lock(&dev_priv->psr.lock); - seq_printf(m, "Sink_Support: %s\n", yesno(dev_priv->psr.sink_support)); seq_printf(m, "Enabled: %s\n", yesno((bool)dev_priv->psr.enabled)); seq_printf(m, "Active: %s\n", yesno(dev_priv->psr.active)); seq_printf(m, "Busy frontbuffer bits: 0x%03x\n", |