From f936ec34dea8da6f38340c1ae2cb35207d8d78cb Mon Sep 17 00:00:00 2001 From: Akash Goel Date: Mon, 29 Jun 2015 14:50:22 +0530 Subject: [PATCH] drm/i915/skl: Updated the i915_ring_freq_table debugfs function 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 Reviewed-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_debugfs.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 73aaea2..27f0a0d 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1782,6 +1782,7 @@ 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))) { seq_puts(m, "unsupported on this chipset\n"); @@ -1796,17 +1797,27 @@ 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); } -- 2.7.4