recipes-wifi/linux-mt76/files/patches-3.x/0172-mtk-mt76-mt7996-support-muru-dbg-info-debug-commands.patch

From 75b59026efecf9c1f6a9486537566121ea3f9055 Mon Sep 17 00:00:00 2001
From: Howard Hsu <howard-yh.hsu@mediatek.com>
Date: Mon, 3 Jun 2024 15:18:05 +0800
Subject: [PATCH 172/199] mtk: mt76: mt7996: support muru dbg info debug
 commands

Support enable muru debug functionality by debugfs.
Usage:
$ echo <item>-<val> > /sys/kernel/debug/ieee80211/phy0/mt76/muru_dbg

The purpose of this commit is for WiFi 7 R1 cert UL-MU test cases.

Signed-off-by: Howard Hsu <howard-yh.hsu@mediatek.com>
---
 mt7996/mtk_debugfs.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/mt7996/mtk_debugfs.c b/mt7996/mtk_debugfs.c
index b16ea5fe..b698c68a 100644
--- a/mt7996/mtk_debugfs.c
+++ b/mt7996/mtk_debugfs.c
@@ -4326,6 +4326,48 @@ mt7996_drr_info(struct seq_file *s, void *data)
 	return 0;
 }
 
+static ssize_t mt7996_muru_dbg_info_set(struct file *file,
+					const char __user *user_buf,
+					size_t count, loff_t *ppos)
+{
+	struct mt7996_dev *dev = file->private_data;
+	char buf[10];
+	u16 item;
+	u8 val;
+	int ret;
+
+	if (count >= sizeof(buf))
+		return -EINVAL;
+
+	if (copy_from_user(buf, user_buf, count))
+		return -EFAULT;
+
+	if (count && buf[count - 1] == '\n')
+		buf[count - 1] = '\0';
+	else
+		buf[count] = '\0';
+
+	if (sscanf(buf, "%hu-%hhu", &item, &val) != 2) {
+		dev_warn(dev->mt76.dev,"format: item-value\n");
+		return -EINVAL;
+	}
+
+	ret = mt7996_mcu_muru_dbg_info(dev, item, val);
+	if (ret) {
+		dev_warn(dev->mt76.dev, "Fail to send mcu cmd.\n");
+		return -EFAULT;
+	}
+
+	return count;
+}
+
+static const struct file_operations fops_muru_dbg_info = {
+	.write = mt7996_muru_dbg_info_set,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+	.llseek = default_llseek,
+};
+
 void mt7996_mtk_init_band_debugfs(struct mt7996_phy *phy, struct dentry *dir)
 {
 	/* agg */
@@ -4447,6 +4489,8 @@ void mt7996_mtk_init_dev_debugfs(struct mt7996_dev *dev, struct dentry *dir)
 	/* Drop counters */
 	debugfs_create_file("tx_drop_stats", 0400, dir, dev, &mt7996_tx_drop_fops);
 	debugfs_create_file("rx_drop_stats", 0400, dir, dev, &mt7996_rx_drop_fops);
+
+	debugfs_create_file("muru_dbg", 0200, dir, dev, &fops_muru_dbg_info);
 }
 
 #endif
-- 
2.18.0