recipes-wifi/linux-mt76/files/patches-3.x/1011-wifi-mt76-mt7996-add-binfile-mode-support.patch

From bc410b015f16893931f9be037140642cfe38ac88 Mon Sep 17 00:00:00 2001
From: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Date: Fri, 31 Mar 2023 11:36:34 +0800
Subject: [PATCH 1011/1024] wifi: mt76: mt7996: add binfile mode support

Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
---
 eeprom.c             | 20 ++++++++++++++++++++
 mt76.h               |  3 +++
 mt7996/eeprom.c      | 42 +++++++++++++++++++++++++++++++++++++++---
 mt7996/eeprom.h      |  7 +++++++
 mt7996/mt7996.h      |  3 +++
 mt7996/mtk_debugfs.c | 40 ++++++++++++++++++++++++++++++++++++++++
 6 files changed, 112 insertions(+), 3 deletions(-)

diff --git a/eeprom.c b/eeprom.c
index 437d8ca24..89bb91335 100644
--- a/eeprom.c
+++ b/eeprom.c
@@ -159,6 +159,26 @@ int mt76_get_of_eeprom(struct mt76_dev *dev, void *eep, int offset, int len)
 }
 EXPORT_SYMBOL_GPL(mt76_get_of_eeprom);
 
+bool mt76_check_bin_file_mode(struct mt76_dev *dev)
+{
+	struct device_node *np = dev->dev->of_node;
+	const char *bin_file_name = NULL;
+
+	if (!np)
+		return false;
+
+	of_property_read_string(np, "bin_file_name", &bin_file_name);
+
+	dev->bin_file_name = bin_file_name;
+	if (dev->bin_file_name)
+		dev_info(dev->dev, "Using bin file %s\n", dev->bin_file_name);
+
+	of_node_put(np);
+
+	return dev->bin_file_name ? true : false;
+}
+EXPORT_SYMBOL_GPL(mt76_check_bin_file_mode);
+
 void
 mt76_eeprom_override(struct mt76_phy *phy)
 {
diff --git a/mt76.h b/mt76.h
index f58a955d6..e6604de45 100644
--- a/mt76.h
+++ b/mt76.h
@@ -911,6 +911,8 @@ struct mt76_dev {
 		struct mt76_usb usb;
 		struct mt76_sdio sdio;
 	};
+
+	const char *bin_file_name;
 };
 
 /* per-phy stats.  */
@@ -1143,6 +1145,7 @@ void mt76_seq_puts_array(struct seq_file *file, const char *str,
 int mt76_eeprom_init(struct mt76_dev *dev, int len);
 void mt76_eeprom_override(struct mt76_phy *phy);
 int mt76_get_of_eeprom(struct mt76_dev *dev, void *data, int offset, int len);
+bool mt76_check_bin_file_mode(struct mt76_dev *dev);
 
 struct mt76_queue *
 mt76_init_queue(struct mt76_dev *dev, int qid, int idx, int n_desc,
diff --git a/mt7996/eeprom.c b/mt7996/eeprom.c
index 374f0e558..4e50460be 100644
--- a/mt7996/eeprom.c
+++ b/mt7996/eeprom.c
@@ -61,8 +61,11 @@ static int mt7996_check_eeprom(struct mt7996_dev *dev)
 	}
 }
 
-static char *mt7996_eeprom_name(struct mt7996_dev *dev)
+const char *mt7996_eeprom_name(struct mt7996_dev *dev)
 {
+	if (dev->bin_file_mode)
+		return dev->mt76.bin_file_name;
+
 	/* reserve for future variants */
 	if (dev->testmode_enable)
 		return MT7996_EEPROM_DEFAULT_TM;
@@ -114,7 +117,10 @@ mt7996_eeprom_load_default(struct mt7996_dev *dev)
 		return ret;
 
 	if (!fw || !fw->data) {
-		dev_err(dev->mt76.dev, "Invalid default bin\n");
+		if (dev->bin_file_mode)
+			dev_err(dev->mt76.dev, "Invalid bin (bin file mode)\n");
+		else
+			dev_err(dev->mt76.dev, "Invalid default bin\n");
 		ret = -EINVAL;
 		goto out;
 	}
@@ -128,18 +134,45 @@ out:
 	return ret;
 }
 
+static int mt7996_eeprom_load_flash(struct mt7996_dev *dev)
+{
+	int ret = 1;
+
+	/* return > 0 for load success, return 0 for load failed, return < 0 for non memory */
+	dev->bin_file_mode = mt76_check_bin_file_mode(&dev->mt76);
+	if (dev->bin_file_mode) {
+		dev->mt76.eeprom.size = MT7996_EEPROM_SIZE;
+		dev->mt76.eeprom.data = devm_kzalloc(dev->mt76.dev, dev->mt76.eeprom.size,
+						     GFP_KERNEL);
+		if (!dev->mt76.eeprom.data)
+			return -ENOMEM;
+
+		if (mt7996_eeprom_load_default(dev))
+			return 0;
+
+		if (mt7996_check_eeprom(dev))
+			return 0;
+	} else {
+		ret = mt76_eeprom_init(&dev->mt76, MT7996_EEPROM_SIZE);
+	}
+
+	return ret;
+}
+
 int mt7996_eeprom_check_fw_mode(struct mt7996_dev *dev)
 {
 	u8 *eeprom;
 	int ret;
 
 	/* load eeprom in flash or bin file mode to determine fw mode */
-	ret = mt76_eeprom_init(&dev->mt76, MT7996_EEPROM_SIZE);
+	ret = mt7996_eeprom_load_flash(dev);
+
 	if (ret < 0)
 		return ret;
 
 	if (ret) {
 		dev->flash_mode = true;
+		dev->eeprom_mode = dev->bin_file_mode ? BIN_FILE_MODE : FLASH_MODE;
 		eeprom = dev->mt76.eeprom.data;
 		/* testmode enable priority: eeprom field > module parameter */
 		dev->testmode_enable = !mt7996_check_eeprom(dev) ? eeprom[MT_EE_TESTMODE_EN] :
@@ -173,6 +206,7 @@ static int mt7996_eeprom_load(struct mt7996_dev *dev)
 			if (ret < 0)
 				return ret;
 		}
+		dev->eeprom_mode = EFUSE_MODE;
 	}
 
 	return mt7996_check_eeprom(dev);
@@ -308,6 +342,8 @@ int mt7996_eeprom_init(struct mt7996_dev *dev)
 			return ret;
 
 		dev_warn(dev->mt76.dev, "eeprom load fail, use default bin\n");
+		dev->bin_file_mode = false;
+		dev->eeprom_mode = DEFAULT_BIN_MODE;
 		ret = mt7996_eeprom_load_default(dev);
 		if (ret)
 			return ret;
diff --git a/mt7996/eeprom.h b/mt7996/eeprom.h
index 7ff290f40..20dd87714 100644
--- a/mt7996/eeprom.h
+++ b/mt7996/eeprom.h
@@ -99,6 +99,13 @@ enum mt7996_eeprom_band {
 	MT_EE_BAND_SEL_6GHZ,
 };
 
+enum mt7915_eeprom_mode {
+	DEFAULT_BIN_MODE,
+	EFUSE_MODE,
+	FLASH_MODE,
+	BIN_FILE_MODE,
+};
+
 static inline int
 mt7996_get_channel_group_5g(int channel)
 {
diff --git a/mt7996/mt7996.h b/mt7996/mt7996.h
index 91d759ec4..64e1bebf7 100644
--- a/mt7996/mt7996.h
+++ b/mt7996/mt7996.h
@@ -323,6 +323,8 @@ struct mt7996_dev {
 	bool has_eht:1;
 
 	bool testmode_enable;
+	bool bin_file_mode;
+	u8 eeprom_mode;
 
 	bool ibf;
 	u8 fw_debug_wm;
@@ -463,6 +465,7 @@ irqreturn_t mt7996_irq_handler(int irq, void *dev_instance);
 u64 __mt7996_get_tsf(struct ieee80211_hw *hw, struct mt7996_vif *mvif);
 int mt7996_register_device(struct mt7996_dev *dev);
 void mt7996_unregister_device(struct mt7996_dev *dev);
+const char *mt7996_eeprom_name(struct mt7996_dev *dev);
 int mt7996_eeprom_init(struct mt7996_dev *dev);
 int mt7996_eeprom_check_fw_mode(struct mt7996_dev *dev);
 int mt7996_eeprom_parse_hw_cap(struct mt7996_dev *dev, struct mt7996_phy *phy);
diff --git a/mt7996/mtk_debugfs.c b/mt7996/mtk_debugfs.c
index 57fcbab35..82b2785bd 100644
--- a/mt7996/mtk_debugfs.c
+++ b/mt7996/mtk_debugfs.c
@@ -2551,6 +2551,44 @@ static const struct file_operations mt7996_txpower_sku_fops = {
 	.llseek = default_llseek,
 };
 
+static int mt7996_show_eeprom_mode(struct seq_file *s, void *data)
+{
+	struct mt7996_dev *dev = dev_get_drvdata(s->private);
+	struct mt76_dev *mdev = &dev->mt76;
+#ifdef CONFIG_NL80211_TESTMODE
+	const char *mtd_name = mdev->test_mtd.name;
+	u32 mtd_offset = mdev->test_mtd.offset;
+#else
+	const char *mtd_name = NULL;
+	u32 mtd_offset;
+#endif
+
+	seq_printf(s, "Current eeprom mode:\n");
+
+	switch (dev->eeprom_mode) {
+	case DEFAULT_BIN_MODE:
+		seq_printf(s, "   default bin mode\n   filename = %s\n", mt7996_eeprom_name(dev));
+		break;
+	case EFUSE_MODE:
+		seq_printf(s, "   efuse mode\n");
+		break;
+	case FLASH_MODE:
+		if (mtd_name)
+			seq_printf(s, "   flash mode\n   mtd name = %s\n   flash offset = 0x%x\n",
+				   mtd_name, mtd_offset);
+		else
+			seq_printf(s, "   flash mode\n");
+		break;
+	case BIN_FILE_MODE:
+		seq_printf(s, "   bin file mode\n   filename = %s\n", mt7996_eeprom_name(dev));
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
 int mt7996_mtk_init_debugfs(struct mt7996_phy *phy, struct dentry *dir)
 {
 	struct mt7996_dev *dev = phy->dev;
@@ -2596,6 +2634,8 @@ int mt7996_mtk_init_debugfs(struct mt7996_phy *phy, struct dentry *dir)
 	debugfs_create_file("txpower_level", 0600, dir, phy, &fops_txpower_level);
 	debugfs_create_file("txpower_info", 0600, dir, phy, &mt7996_txpower_info_fops);
 	debugfs_create_file("txpower_sku", 0600, dir, phy, &mt7996_txpower_sku_fops);
+	debugfs_create_devm_seqfile(dev->mt76.dev, "eeprom_mode", dir,
+				    mt7996_show_eeprom_mode);
 
 	debugfs_create_devm_seqfile(dev->mt76.dev, "wtbl_info", dir,
 				    mt7996_wtbl_read);
-- 
2.39.2