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drm/i915: VLV/CHV PSR debugfs. 

Add debugfs support for Valleyview and Cherryview considering that
we have PSR per pipe and  we don't have any kind of
performance counter as we have on other platforms that support PSR.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Rodrigo Vivi 2014-11-14 08:52:40 -08:00 committed by Daniel Vetter
parent 995d304774
commit a6cbdb8e37
1 changed files with 29 additions and 5 deletions
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34
drivers/gpu/drm/i915/i915_debugfs.c
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@ -2155,6 +2155,8 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
struct drm_device *dev = node->minor->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u32 psrperf = 0;
u32 stat[3];
enum pipe pipe;
bool enabled = false;
intel_runtime_pm_get(dev_priv);
@ -2169,14 +2171,36 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
seq_printf(m, "Re-enable work scheduled: %s\n",
yesno(work_busy(&dev_priv->psr.work.work)));
enabled = HAS_PSR(dev) &&
I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE;
seq_printf(m, "HW Enabled & Active bit: %s\n", yesno(enabled));
if (HAS_PSR(dev)) {
if (HAS_DDI(dev))
enabled = I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE;
else {
for_each_pipe(dev_priv, pipe) {
stat[pipe] = I915_READ(VLV_PSRSTAT(pipe)) &
VLV_EDP_PSR_CURR_STATE_MASK;
if ((stat[pipe] == VLV_EDP_PSR_ACTIVE_NORFB_UP) ||
(stat[pipe] == VLV_EDP_PSR_ACTIVE_SF_UPDATE))
enabled = true;
}
}
}
seq_printf(m, "HW Enabled & Active bit: %s", yesno(enabled));
if (HAS_PSR(dev))
if (!HAS_DDI(dev))
for_each_pipe(dev_priv, pipe) {
if ((stat[pipe] == VLV_EDP_PSR_ACTIVE_NORFB_UP) ||
(stat[pipe] == VLV_EDP_PSR_ACTIVE_SF_UPDATE))
seq_printf(m, " pipe %c", pipe_name(pipe));
}
seq_puts(m, "\n");
/* CHV PSR has no kind of performance counter */
if (HAS_PSR(dev) && HAS_DDI(dev)) {
psrperf = I915_READ(EDP_PSR_PERF_CNT(dev)) &
EDP_PSR_PERF_CNT_MASK;
seq_printf(m, "Performance_Counter: %u\n", psrperf);
seq_printf(m, "Performance_Counter: %u\n", psrperf);
}
mutex_unlock(&dev_priv->psr.lock);
intel_runtime_pm_put(dev_priv);