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>
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 779a275..eed7402 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2155,6 +2155,8 @@
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 @@
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);