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drm/i915/psr: Split sink status into a separate debugfs node

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This allows to read i915_edp_psr_status from tests without triggering
any AUX communication. Take this opportunity to move this under the
eDP-1 connector directory as the status we print is of the sink.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Suggested-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180705003121.2478-1-dhinakaran.pandiyan@intel.com
This commit is contained in:
Dhinakaran Pandiyan 2018-07-04 17:31:21 -07:00 committed by Dhinakaran Pandiyan
parent c3d433617d
commit 5b7b30864d
1 changed files with 39 additions and 30 deletions
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69
drivers/gpu/drm/i915/i915_debugfs.c
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@ -2592,6 +2592,41 @@ static const struct file_operations i915_guc_log_relay_fops = {
.release = i915_guc_log_relay_release,
};
static int i915_psr_sink_status_show(struct seq_file *m, void *data)
{
u8 val;
static const char * const sink_status[] = {
"inactive",
"transition to active, capture and display",
"active, display from RFB",
"active, capture and display on sink device timings",
"transition to inactive, capture and display, timing re-sync",
"reserved",
"reserved",
"sink internal error",
};
struct drm_connector *connector = m->private;
struct intel_dp *intel_dp =
enc_to_intel_dp(&intel_attached_encoder(connector)->base);
if (connector->status != connector_status_connected)
return -ENODEV;
if (drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_STATUS, &val) == 1) {
const char *str = "unknown";
val &= DP_PSR_SINK_STATE_MASK;
if (val < ARRAY_SIZE(sink_status))
str = sink_status[val];
seq_printf(m, "Sink PSR status: 0x%x [%s]\n", val, str);
} else {
DRM_ERROR("dpcd read (at %u) failed\n", DP_PSR_STATUS);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(i915_psr_sink_status);
static void
psr_source_status(struct drm_i915_private *dev_priv, struct seq_file *m)
{
@ -2643,26 +2678,6 @@ psr_source_status(struct drm_i915_private *dev_priv, struct seq_file *m)
seq_printf(m, "Source PSR status: 0x%x [%s]\n", psr_status, "unknown");
}
static const char *psr_sink_status(u8 val)
{
static const char * const sink_status[] = {
"inactive",
"transition to active, capture and display",
"active, display from RFB",
"active, capture and display on sink device timings",
"transition to inactive, capture and display, timing re-sync",
"reserved",
"reserved",
"sink internal error"
};
val &= DP_PSR_SINK_STATE_MASK;
if (val < ARRAY_SIZE(sink_status))
return sink_status[val];
return "unknown";
}
static int i915_edp_psr_status(struct seq_file *m, void *data)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
@ -2706,15 +2721,6 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
}
psr_source_status(dev_priv, m);
if (dev_priv->psr.enabled) {
struct drm_dp_aux *aux = &dev_priv->psr.enabled->aux;
u8 val;
if (drm_dp_dpcd_readb(aux, DP_PSR_STATUS, &val) == 1)
seq_printf(m, "Sink PSR status: 0x%x [%s]\n", val,
psr_sink_status(val));
}
mutex_unlock(&dev_priv->psr.lock);
if (READ_ONCE(dev_priv->psr.debug)) {
@ -4968,9 +4974,12 @@ int i915_debugfs_connector_add(struct drm_connector *connector)
debugfs_create_file("i915_dpcd", S_IRUGO, root,
connector, &i915_dpcd_fops);
if (connector->connector_type == DRM_MODE_CONNECTOR_eDP)
if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
debugfs_create_file("i915_panel_timings", S_IRUGO, root,
connector, &i915_panel_fops);
debugfs_create_file("i915_psr_sink_status", S_IRUGO, root,
connector, &i915_psr_sink_status_fops);
}
return 0;
}