From: Tom O'Rourke <Tom.O'Rourke@xxxxxxxxx>
When SLPC is controlling requested frequency, the rps.cur_freq
value is not used to make the frequency request.
Requested frequency from register RPNSWREQ has the value
most recently requested by SLPC firmware. Adding new sysfs
interface gt_req_freq_mhz to know this value.
SLPC requested value needs to be made available to i915 without
reading RPNSWREQ.
v1: Replace HAS_SLPC with intel_slpc_active (Paulo)
Avoid magic numbers (Nick)
Use a function for repeated code (Jon)
v2: Add "SLPC Active" to i915_frequency_info output and
don't update cur_freq as it is driver internal request. (Chris)
v3: Removing sysfs interface gt_req_freq_mhz out of this patch
for proper division of functionality. (Sagar)
v4: idle_freq, boost_freq are also not used with SLPC.
v5: Added SLPC banner to i915_rps_boost_info and keep printing
driver internal values. (Chris)
Signed-off-by: Tom O'Rourke <Tom.O'Rourke@xxxxxxxxx>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index bce3880..8f24fdf 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1079,6 +1079,9 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
intel_runtime_pm_get(dev_priv);
+ if (dev_priv->guc.slpc.active)
+ seq_puts(m, "SLPC Active\n");
+
if (IS_GEN5(dev_priv)) {
u16 rgvswctl = I915_READ16(MEMSWCTL);
u16 rgvstat = I915_READ16(MEMSTAT_ILK);
@@ -2275,6 +2278,10 @@ static int i915_rps_boost_info(struct seq_file *m, void *data)
struct drm_device *dev = &dev_priv->drm;
struct drm_file *file;
+ if (dev_priv->guc.slpc.active)
+ seq_puts(m, "SLPC Active\n");
+
+
seq_printf(m, "RPS enabled? %d\n", dev_priv->rps.enabled);
seq_printf(m, "GPU busy? %s [%d requests]\n",
yesno(dev_priv->gt.awake), dev_priv->gt.active_requests);
--
1.9.1
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