mt76: mt7915: introduce rdd_monitor debugfs node

Introduce rdd_monitor debugfs node in order to dump rdd2 configuration.

Tested-by: Owen Peng <owen.peng@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
index e140336..280823f 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
@@ -308,6 +308,53 @@ exit:
 }
 DEFINE_SHOW_ATTRIBUTE(mt7915_muru_stats);
 
+static int
+mt7915_rdd_monitor(struct seq_file *s, void *data)
+{
+       struct mt7915_dev *dev = dev_get_drvdata(s->private);
+       struct cfg80211_chan_def *chandef = &dev->rdd2_chandef;
+       const char *bw;
+       int ret = 0;
+
+       mutex_lock(&dev->mt76.mutex);
+
+       if (!cfg80211_chandef_valid(chandef)) {
+               ret = -EINVAL;
+               goto out;
+       }
+
+       if (!dev->rdd2_phy) {
+               seq_puts(s, "not running\n");
+               goto out;
+       }
+
+       switch (chandef->width) {
+       case NL80211_CHAN_WIDTH_40:
+               bw = "40";
+               break;
+       case NL80211_CHAN_WIDTH_80:
+               bw = "80";
+               break;
+       case NL80211_CHAN_WIDTH_160:
+               bw = "160";
+               break;
+       case NL80211_CHAN_WIDTH_80P80:
+               bw = "80P80";
+               break;
+       default:
+               bw = "20";
+               break;
+       }
+
+       seq_printf(s, "channel %d (%d MHz) width %s MHz center1: %d MHz\n",
+                  chandef->chan->hw_value, chandef->chan->center_freq,
+                  bw, chandef->center_freq1);
+out:
+       mutex_unlock(&dev->mt76.mutex);
+
+       return ret;
+}
+
 static int
 mt7915_fw_debug_wm_set(void *data, u64 val)
 {
@@ -856,6 +903,8 @@ int mt7915_init_debugfs(struct mt7915_phy *phy)
                                   &dev->hw_pattern);
                debugfs_create_file("radar_trigger", 0200, dir, dev,
                                    &fops_radar_trigger);
+               debugfs_create_devm_seqfile(dev->mt76.dev, "rdd_monitor", dir,
+                                           mt7915_rdd_monitor);
        }
 
        if (!ext_phy)