[PATCH v4 1/5] Bluetooth: btmtk: add the function to get the fw name

[sean . wang]

From: Sean Wang <sean.wang@xxxxxxxxxxxx>

Include a shared function to get the firmware name, to prevent repeating
code for similar chipsets.

Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
---
v3: first added to the series
v4: rebase onto the latest code and add an additional parameter
    fw_flavor into the function btmtk_fw_get_filename.
---
 drivers/bluetooth/btmtk.c | 18 ++++++++++++++++++
 drivers/bluetooth/btmtk.h |  8 ++++++++
 2 files changed, 26 insertions(+)

diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
index 812fd2a8f853..a0a858a0706d 100644
--- a/drivers/bluetooth/btmtk.c
+++ b/drivers/bluetooth/btmtk.c
@@ -103,6 +103,24 @@ static void btmtk_coredump_notify(struct hci_dev *hdev, int state)
 	}
 }
 
+void btmtk_fw_get_filename(char *buf, size_t size, u32 dev_id, u32 fw_ver,
+			   u32 fw_flavor)
+{
+	if (dev_id == 0x7925)
+		snprintf(buf, size,
+			 "mediatek/mt%04x/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
+			 dev_id & 0xffff, dev_id & 0xffff, (fw_ver & 0xff) + 1);
+	else if (dev_id == 0x7961 && fw_flavor)
+		snprintf(buf, sizeof(size),
+			 "mediatek/BT_RAM_CODE_MT%04x_1a_%x_hdr.bin",
+			 dev_id & 0xffff, (fw_ver & 0xff) + 1);
+	else
+		snprintf(buf, size,
+			 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
+			 dev_id & 0xffff, (fw_ver & 0xff) + 1);
+}
+EXPORT_SYMBOL_GPL(btmtk_fw_get_filename);
+
 int btmtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname,
 			      wmt_cmd_sync_func_t wmt_cmd_sync)
 {
diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h
index cbcdb99a22e6..e76b8a358be8 100644
--- a/drivers/bluetooth/btmtk.h
+++ b/drivers/bluetooth/btmtk.h
@@ -160,6 +160,9 @@ int btmtk_register_coredump(struct hci_dev *hdev, const char *name,
 			    u32 fw_version);
 
 int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb);
+
+void btmtk_fw_get_filename(char *buf, size_t size, u32 dev_id, u32 fw_ver,
+			   u32 fw_flavor);
 #else
 
 static inline int btmtk_set_bdaddr(struct hci_dev *hdev,
@@ -194,4 +197,9 @@ static int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb)
 {
 	return -EOPNOTSUPP;
 }
+
+static void btmtk_fw_get_filename(char *buf, size_t size, u32 dev_id,
+				  u32 fw_ver, u32 fw_flavor)
+{
+}
 #endif
-- 
2.25.1