[PATCH v2] Bluetooth: btusb: Add support different nvm to distinguish different factory for WCN6855 controller

From: Zijun Hu
Date: Thu Aug 05 2021 - 04:38:02 EST


From: Tim Jiang <tjiang@xxxxxxxxxxxxxx>

we have different factory to produce wcn6855 soc chip, so we should
use different nvm file with suffix to distinguish them.

Signed-off-by: Tim Jiang <tjiang@xxxxxxxxxxxxxx>
---
drivers/bluetooth/btusb.c | 60 +++++++++++++++++++++++++++++++++++++----------
1 file changed, 47 insertions(+), 13 deletions(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index b1a05bb9f4bf..18b1ef2497ec 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -4013,6 +4013,9 @@ 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;
@@ -4044,6 +4047,7 @@ 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,
@@ -4198,6 +4202,42 @@ static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
return err;
}

+static int btusb_setup_qca_form_nvm_name(char **fwname,
+ int max_size,
+ struct qca_version *ver,
+ char *factory)
+{
+ if (((ver->flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
+ /* if boardid equal 0, use default nvm without suffix */
+ if (le16_to_cpu(ver->board_id) == 0x0) {
+ /* we add suffix factory to distinguish with different factory. */
+ if (factory != NULL) {
+ snprintf(*fwname, max_size, "qca/nvm_usb_%08x_%s.bin",
+ le32_to_cpu(ver->rom_version),
+ factory);
+ } else {
+ snprintf(*fwname, max_size, "qca/nvm_usb_%08x.bin",
+ le32_to_cpu(ver->rom_version));
+ }
+ } else {
+ if (factory != NULL) {
+ snprintf(*fwname, max_size, "qca/nvm_usb_%08x_%s_%04x.bin",
+ le32_to_cpu(ver->rom_version),
+ factory,
+ le16_to_cpu(ver->board_id));
+ } else {
+ snprintf(*fwname, max_size, "qca/nvm_usb_%08x_%04x.bin",
+ le32_to_cpu(ver->rom_version),
+ le16_to_cpu(ver->board_id));
+ }
+ }
+ } else {
+ snprintf(*fwname, max_size, "qca/nvm_usb_%08x.bin",
+ le32_to_cpu(ver->rom_version));
+ }
+
+}
+
static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
struct qca_version *ver,
const struct qca_device_info *info)
@@ -4206,19 +4246,13 @@ 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_setup_qca_form_nvm_name(&fwname, sizeof(fwname), ver, "gf");
+ break;
+ default:
+ btusb_setup_qca_form_nvm_name(&fwname, sizeof(fwname), ver, NULL);
}

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