diff options
Diffstat (limited to 'drivers/net/wireless/realtek/rtw89/fw.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/fw.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw89/fw.c b/drivers/net/wireless/realtek/rtw89/fw.c index cee9815b6df6..bf07275ca8a3 100644 --- a/drivers/net/wireless/realtek/rtw89/fw.c +++ b/drivers/net/wireless/realtek/rtw89/fw.c @@ -248,6 +248,46 @@ static void rtw89_fw_recognize_features(struct rtw89_dev *rtwdev) } } +void rtw89_early_fw_feature_recognize(struct device *device, + const struct rtw89_chip_info *chip, + u32 *early_feat_map) +{ + union { + struct rtw89_mfw_hdr mfw_hdr; + u8 fw_hdr[RTW89_FW_HDR_SIZE]; + } buf = {}; + const struct firmware *firmware; + u32 ver_code; + int ret; + int i; + + ret = request_partial_firmware_into_buf(&firmware, chip->fw_name, + device, &buf, sizeof(buf), 0); + if (ret) { + dev_err(device, "failed to early request firmware: %d\n", ret); + goto out; + } + + ver_code = buf.mfw_hdr.sig != RTW89_MFW_SIG ? + RTW89_FW_HDR_VER_CODE(&buf.fw_hdr) : + RTW89_MFW_HDR_VER_CODE(&buf.mfw_hdr); + if (!ver_code) + goto out; + + for (i = 0; i < ARRAY_SIZE(fw_feat_tbl); i++) { + const struct __fw_feat_cfg *ent = &fw_feat_tbl[i]; + + if (chip->chip_id != ent->chip_id) + continue; + + if (ent->cond(ver_code, ent->ver_code)) + *early_feat_map |= BIT(ent->feature); + } + +out: + release_firmware(firmware); +} + int rtw89_fw_recognize(struct rtw89_dev *rtwdev) { int ret; |