From: Akash Goel <akash.g...@intel.com>
Updated the i915_ring_freq_table debugfs function to support the read
of ring frequency table, through Punit interface, for SKL also.
Issue: VIZ-5144
Signed-off-by: Akash Goel <akash.g...@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.v...@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
b/drivers/gpu/drm/i915/i915_debugfs.c
index 438c10b..2666d8a 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1745,9 +1745,9 @@ static int i915_ring_freq_table(struct seq_file *m, void
*unused)
struct drm_i915_private *dev_priv = dev->dev_private;
int ret = 0;
int gpu_freq, ia_freq;
+ unsigned int max_gpu_freq, min_gpu_freq;
- if (!(IS_GEN6(dev) || (IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) ||
- IS_BROADWELL(dev))) {
+ if ((INTEL_INFO(dev)->gen < 6) || IS_VALLEYVIEW(dev)) {
seq_puts(m, "unsupported on this chipset\n");
return 0;
}
@@ -1760,17 +1760,27 @@ static int i915_ring_freq_table(struct seq_file *m,
void *unused)
if (ret)
goto out;
+ if (IS_SKYLAKE(dev)) {
+ /* Convert GT frequency to 50 HZ units */
+ min_gpu_freq =
+ dev_priv->rps.min_freq_softlimit / GEN9_FREQ_SCALER;
+ max_gpu_freq =
+ dev_priv->rps.max_freq_softlimit / GEN9_FREQ_SCALER;
+ } else {
+ min_gpu_freq = dev_priv->rps.min_freq_softlimit;
+ max_gpu_freq = dev_priv->rps.max_freq_softlimit;
+ }
+
seq_puts(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring
freq (MHz)\n");
- for (gpu_freq = dev_priv->rps.min_freq_softlimit;
- gpu_freq <= dev_priv->rps.max_freq_softlimit;
- gpu_freq++) {
+ for (gpu_freq = min_gpu_freq; gpu_freq <= max_gpu_freq; gpu_freq++) {
ia_freq = gpu_freq;
sandybridge_pcode_read(dev_priv,
GEN6_PCODE_READ_MIN_FREQ_TABLE,
&ia_freq);
seq_printf(m, "%d\t\t%d\t\t\t\t%d\n",
- intel_gpu_freq(dev_priv, gpu_freq),
+ intel_gpu_freq(dev_priv, (gpu_freq *
+ (IS_SKYLAKE(dev) ? GEN9_FREQ_SCALER : 1))),
((ia_freq >> 0) & 0xff) * 100,
((ia_freq >> 8) & 0xff) * 100);
}
--
1.9.2
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