From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
For now it just prints the value of the forbid_refcount and allowing
variables.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index ed72fe0..320f4c2 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1674,6 +1674,26 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
return 0;
}
+static int i915_pc8_status(struct seq_file *m, void *unused)
+{
+ struct drm_info_node *node = (struct drm_info_node *) m->private;
+ struct drm_device *dev = node->minor->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (!IS_HASWELL(dev)) {
+ seq_puts(m, "not supported\n");
+ return 0;
+ }
+
+ mutex_lock(&dev_priv->pc8.lock);
+ seq_printf(m, "Core display allowing: %s\n",
+ yesno(dev_priv->pc8.allowing));
+ seq_printf(m, "Forbid refcount: %d\n", dev_priv->pc8.forbid_refcnt);
+ mutex_unlock(&dev_priv->pc8.lock);
+
+ return 0;
+}
+
static int
i915_wedged_get(void *data, u64 *val)
{
@@ -2107,6 +2127,7 @@ static struct drm_info_list i915_debugfs_list[] = {
{"i915_dpio", i915_dpio_info, 0},
{"i915_llc", i915_llc, 0},
{"i915_edp_psr_status", i915_edp_psr_status, 0},
+ {"i915_pc8_status", i915_pc8_status, 0},
};
#define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
--
1.8.1.2
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