[PATCH v11] Bluetooth: btusb: Add support using different nvm for variant WCN6855 controller

[tjiang]

the RF performance of wcn6855 soc chip from different foundries will be
difference, so we should use different nvm to configure them.

Signed-off-by: Tim Jiang <tjiang@xxxxxxxxxxxxxx>
---
 drivers/bluetooth/btusb.c | 49 
++++++++++++++++++++++++++++++++++-------------
 1 file changed, 36 insertions(+), 13 deletions(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index da85cc14f931..c32e941818dd 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -3186,6 +3186,9 @@ static int btusb_set_bdaddr_wcn6855(struct hci_dev 
*hdev,
 #define QCA_DFU_TIMEOUT		3000
 #define QCA_FLAG_MULTI_NVM      0x80

+#define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
+#define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
+
 struct qca_version {
 	__le32	rom_version;
 	__le32	patch_version;
@@ -3217,6 +3220,7 @@ static const struct qca_device_info 
qca_devices_table[] = {
 	{ 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
 	{ 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
 	{ 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
+	{ 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
 };

 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 
request,
@@ -3371,6 +3375,30 @@ static int btusb_setup_qca_load_rampatch(struct 
hci_dev *hdev,
 	return err;
 }

+static void btusb_generate_qca_nvm_name(char *fwname,
+					size_t max_size,
+					struct qca_version *ver,
+					const char *variant)
+{
+	u16 board_id = le16_to_cpu(ver->board_id);
+	u32 rom_version = le32_to_cpu(ver->rom_version);
+
+	if (((ver->flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
+		/* if boardid equal 0, use default nvm without suffix */
+		if (board_id == 0x0) {
+			snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin",
+				rom_version, variant);
+		} else {
+			snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin",
+				rom_version, variant, board_id);
+		}
+	} else {
+		snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin",
+			rom_version);
+	}
+
+}
+
 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
 				    struct qca_version *ver,
 				    const struct qca_device_info *info)
@@ -3379,19 +3407,14 @@ static int btusb_setup_qca_load_nvm(struct 
hci_dev *hdev,
 	char fwname[64];
 	int err;

-	if (((ver->flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
-		/* if boardid equal 0, use default nvm without surfix */
-		if (le16_to_cpu(ver->board_id) == 0x0) {
-			snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
-				 le32_to_cpu(ver->rom_version));
-		} else {
-			snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x_%04x.bin",
-				le32_to_cpu(ver->rom_version),
-				le16_to_cpu(ver->board_id));
-		}
-	} else {
-		snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
-			 le32_to_cpu(ver->rom_version));
+	switch (ver->ram_version) {
+	case WCN6855_2_0_RAM_VERSION_GF:
+	case WCN6855_2_1_RAM_VERSION_GF:
+		btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver, "_gf");
+		break;
+	default:
+		btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver, "");
+		break;
 	}

 	err = request_firmware(&fw, fwname, &hdev->dev);
--
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