recipes-wifi/linux-mt76/files/patches-3.x/0026-mtk-wifi-mt76-mt7996-add-binfile-mode-support.patch

From 5e960ddb3cd014c0fe80526215319ffd3c497054 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 026/116] mtk: wifi: mt76: mt7996: add binfile mode support

Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>

Fix binfile cannot sync precal data to atenl
Binfile is viewed as efuse mode in atenl, so atenl does not allocate
precal memory for its eeprom file
Use mtd offset == 0xFFFFFFFF to determine whether it is binfile or flash mode
Add support for loading precal in binfile mode

Align upstream

Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
---
 eeprom.c             |  25 +++++++++++
 mt76.h               |   3 ++
 mt7996/eeprom.c      | 103 ++++++++++++++++++++++++++++++++++++++++---
 mt7996/eeprom.h      |   7 +++
 mt7996/mt7996.h      |   4 ++
 mt7996/mtk_debugfs.c |  41 +++++++++++++++++
 testmode.h           |   2 +-
 7 files changed, 179 insertions(+), 6 deletions(-)

diff --git a/eeprom.c b/eeprom.c
index 11efe29..3da9492 100644
--- a/eeprom.c
+++ b/eeprom.c
@@ -161,6 +161,31 @@ static int mt76_get_of_eeprom(struct mt76_dev *dev, void *eep, int len)
 	return mt76_get_of_data_from_nvmem(dev, eep, "eeprom", len);
 }
 
+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);
+#ifdef CONFIG_NL80211_TESTMODE
+		dev->test_mtd.name = devm_kstrdup(dev->dev, bin_file_name, GFP_KERNEL);
+		dev->test_mtd.offset = -1;
+#endif
+	}
+
+	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 c372e78..dbd8ab9 100644
--- a/mt76.h
+++ b/mt76.h
@@ -954,6 +954,8 @@ struct mt76_dev {
 		struct mt76_usb usb;
 		struct mt76_sdio sdio;
 	};
+
+	const char *bin_file_name;
 };
 
 /* per-phy stats.  */
@@ -1225,6 +1227,7 @@ void mt76_eeprom_override(struct mt76_phy *phy);
 int mt76_get_of_data_from_mtd(struct mt76_dev *dev, void *eep, int offset, int len);
 int mt76_get_of_data_from_nvmem(struct mt76_dev *dev, void *eep,
 				const char *cell_name, 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 6ac992a..fe8b253 100644
--- a/mt7996/eeprom.c
+++ b/mt7996/eeprom.c
@@ -82,10 +82,17 @@ 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->testmode_enable)
-		return MT7996_EEPROM_DEFAULT_TM;
+	if (dev->bin_file_mode)
+		return dev->mt76.bin_file_name;
+
+	if (dev->testmode_enable) {
+		if (is_mt7992(&dev->mt76))
+			return MT7992_EEPROM_DEFAULT_TM;
+		else
+			return MT7996_EEPROM_DEFAULT_TM;
+	}
 
 	switch (mt76_chip(&dev->mt76)) {
 	case 0x7990:
@@ -152,7 +159,10 @@ 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;
 	}
@@ -166,18 +176,45 @@ 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] :
@@ -211,6 +248,7 @@ static int mt7996_eeprom_load(struct mt7996_dev *dev)
 			if (ret && ret != -EINVAL)
 				return ret;
 		}
+		dev->eeprom_mode = EFUSE_MODE;
 	}
 
 	return mt7996_check_eeprom(dev);
@@ -337,6 +375,59 @@ int mt7996_eeprom_parse_hw_cap(struct mt7996_dev *dev, struct mt7996_phy *phy)
 	return mt7996_eeprom_parse_band_config(phy);
 }
 
+static int
+mt7996_eeprom_load_precal_binfile(struct mt7996_dev *dev, u32 offs, u32 size)
+{
+	const struct firmware *fw = NULL;
+	int ret;
+
+	ret = request_firmware(&fw, dev->mt76.bin_file_name, dev->mt76.dev);
+	if (ret)
+		return ret;
+
+	if (!fw || !fw->data) {
+		dev_err(dev->mt76.dev, "Invalid bin (bin file mode), load precal fail\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	memcpy(dev->cal, fw->data + offs, size);
+
+out:
+	release_firmware(fw);
+
+	return ret;
+}
+
+static int mt7996_eeprom_load_precal(struct mt7996_dev *dev)
+{
+	struct mt76_dev *mdev = &dev->mt76;
+	u8 *eeprom = mdev->eeprom.data;
+	u32 offs = MT_EE_DO_PRE_CAL;
+	u32 size, val = eeprom[offs];
+	int ret;
+
+	mt7996_eeprom_init_precal(dev);
+
+	if (!dev->flash_mode || !val)
+		return 0;
+
+	size = MT_EE_CAL_GROUP_SIZE + MT_EE_CAL_DPD_SIZE;
+
+	dev->cal = devm_kzalloc(mdev->dev, size, GFP_KERNEL);
+	if (!dev->cal)
+		return -ENOMEM;
+
+	if (dev->bin_file_mode)
+		return mt7996_eeprom_load_precal_binfile(dev, MT_EE_PRECAL, size);
+
+	ret = mt76_get_of_data_from_mtd(mdev, dev->cal, offs, size);
+	if (!ret)
+		return ret;
+
+	return mt76_get_of_data_from_nvmem(mdev, dev->cal, "precal", size);
+}
+
 int mt7996_eeprom_init(struct mt7996_dev *dev)
 {
 	int ret;
@@ -351,6 +442,8 @@ 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 b19ff06..8f0f87b 100644
--- a/mt7996/eeprom.h
+++ b/mt7996/eeprom.h
@@ -102,6 +102,13 @@ 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 6ab45cc..9d6e85c 100644
--- a/mt7996/mt7996.h
+++ b/mt7996/mt7996.h
@@ -62,6 +62,7 @@
 #define MT7992_EEPROM_DEFAULT_24	"mediatek/mt7996/mt7992_eeprom_24_2i5i.bin"
 #define MT7992_EEPROM_DEFAULT_23	"mediatek/mt7996/mt7992_eeprom_23_2i5i.bin"
 #define MT7992_EEPROM_DEFAULT_23_EXT	"mediatek/mt7996/mt7992_eeprom_23_2e5e.bin"
+#define MT7992_EEPROM_DEFAULT_TM	"mediatek/mt7996/mt7992_eeprom_tm.bin"
 #define MT7996_EEPROM_SIZE		7680
 #define MT7996_EEPROM_BLOCK_SIZE	16
 #define MT7996_TOKEN_SIZE		16384
@@ -395,6 +396,8 @@ struct mt7996_dev {
 	} wed_rro;
 
 	bool testmode_enable;
+	bool bin_file_mode;
+	u8 eeprom_mode;
 
 	bool ibf;
 	u8 fw_debug_wm;
@@ -523,6 +526,7 @@ 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 74aabf0..2499f12 100644
--- a/mt7996/mtk_debugfs.c
+++ b/mt7996/mtk_debugfs.c
@@ -2798,6 +2798,44 @@ static const struct file_operations mt7996_txpower_path_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;
@@ -2866,6 +2904,9 @@ int mt7996_mtk_init_debugfs(struct mt7996_phy *phy, struct dentry *dir)
 	debugfs_create_file("txpower_sku", 0600, dir, phy, &mt7996_txpower_sku_fops);
 	debugfs_create_file("txpower_path", 0600, dir, phy, &mt7996_txpower_path_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);
 
diff --git a/testmode.h b/testmode.h
index d6601cd..5d677f8 100644
--- a/testmode.h
+++ b/testmode.h
@@ -16,7 +16,7 @@
  * @MT76_TM_ATTR_RESET: reset parameters to default (flag)
  * @MT76_TM_ATTR_STATE: test state (u32), see &enum mt76_testmode_state
  *
- * @MT76_TM_ATTR_MTD_PART: mtd partition used for eeprom data (string)
+ * @MT76_TM_ATTR_MTD_PART: mtd partition or binfile used for eeprom data (string)
  * @MT76_TM_ATTR_MTD_OFFSET: offset of eeprom data within the partition (u32)
  * @MT76_TM_ATTR_BAND_IDX: band idx of the chip (u8)
  *
-- 
2.18.0