Thanks Matthias for the comments. please see my comments inline .
BTW: marcel , do you agree with Matthias comments ? if fine , I will
align Matthias comments and make the final version.
regards.
tim
On 2021-10-20 03:29, Matthias Kaehlcke wrote:
On Tue, Oct 12, 2021 at 03:55:56PM +0800, tjiang@xxxxxxxxxxxxxx wrote:
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 | 56
+++++++++++++++++++++++++++++++++++------------
1 file changed, 42 insertions(+), 14 deletions(-)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 75c83768c257..f352ff351b61 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -3190,6 +3190,9 @@ 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;
@@ -3221,6 +3224,7 @@ 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,
@@ -3375,6 +3379,43 @@ 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 struct qca_version *ver
+{
+ u32 rom_version = le32_to_cpu(ver->rom_version);
+ u16 flag = le16_to_cpu(ver->flag);
+
+ if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
+ u16 board_id = le16_to_cpu(ver->board_id);
+ u32 ram_version = le32_to_cpu(ver->ram_version);
+ const char *variant;
+
+ switch (ram_version) {
+ case WCN6855_2_0_RAM_VERSION_GF:
+ case WCN6855_2_1_RAM_VERSION_GF:
+ variant = "_gf";
+ break;
+ default:
+ variant = "";
instead of the default branch you could assign a default to 'variant'
at
declaration time, but it's fine either way.
[Tim] this code style is recommend by marcel.
+ break;
+ }
+
+ /* if boardid equal 0, use default nvm without suffix */
delete the comment, it just states the obvious
+ if (board_id == 0x0) {
nit: is there really any value in using a hex number here instead of a
plain decimal 0?
[Tim] this line is inherit from last change , if you think I should
change 0x0 to 0 , I am fine.
+ 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)
@@ -3383,20 +3424,7 @@ 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));
- }
+ btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
err = request_firmware(&fw, fwname, &hdev->dev);
if (err) {
