diff options
| author | Zong-Zhe Yang <kevin_yang@realtek.com> | 2023-06-02 23:05:50 +0800 |
|---|---|---|
| committer | Kalle Valo <kvalo@kernel.org> | 2023-06-08 18:58:51 +0300 |
| commit | ffc23511531341936dbddd24ba0e3a08bcdda01c (patch) | |
| tree | f5663c208ec69d1b74bdcc4df5a98a1748c70695 | |
| parent | b7d170d5a670de8d30d2db94179099f52f8df485 (diff) | |
wifi: rtw89: regd: judge 6 GHz according to chip and BIOS
We allow platform to disable 6 GHz on chips, which supports 6 GHz, through
BIOS. Driver will evaluate Realtek acpi DSM with RTW89_ACPI_DSM_FUNC_6G_DIS
(function 3) to get whether 6 GHz should be disabled.
Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230602150556.36777-3-pkshih@realtek.com
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/regd.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw89/regd.c b/drivers/net/wireless/realtek/rtw89/regd.c index 377a7a1c560b..43e589c023af 100644 --- a/drivers/net/wireless/realtek/rtw89/regd.c +++ b/drivers/net/wireless/realtek/rtw89/regd.c @@ -330,6 +330,55 @@ bottom: sband->n_channels -= 3; } +static void rtw89_regd_setup_6ghz(struct rtw89_dev *rtwdev, struct wiphy *wiphy) +{ + const struct rtw89_chip_info *chip = rtwdev->chip; + bool chip_support_6ghz = chip->support_bands & BIT(NL80211_BAND_6GHZ); + bool regd_allow_6ghz = chip_support_6ghz; + struct ieee80211_supported_band *sband; + int ret; + u8 val; + + if (!chip_support_6ghz) + goto bottom; + + ret = rtw89_acpi_evaluate_dsm(rtwdev, RTW89_ACPI_DSM_FUNC_6G_DIS, &val); + if (ret) { + rtw89_debug(rtwdev, RTW89_DBG_REGD, + "acpi: cannot eval 6ghz: %d\n", ret); + goto bottom; + } + + rtw89_debug(rtwdev, RTW89_DBG_REGD, + "acpi: eval if disallow 6ghz: %d\n", val); + + switch (val) { + case 0: + regd_allow_6ghz = true; + break; + case 1: + regd_allow_6ghz = false; + break; + default: + break; + } + +bottom: + rtw89_debug(rtwdev, RTW89_DBG_REGD, "regd: allow 6ghz: %d\n", + regd_allow_6ghz); + + if (regd_allow_6ghz) + return; + + sband = wiphy->bands[NL80211_BAND_6GHZ]; + if (!sband) + return; + + wiphy->bands[NL80211_BAND_6GHZ] = NULL; + kfree(sband->iftype_data); + kfree(sband); +} + int rtw89_regd_setup(struct rtw89_dev *rtwdev) { struct wiphy *wiphy = rtwdev->hw->wiphy; @@ -338,6 +387,7 @@ int rtw89_regd_setup(struct rtw89_dev *rtwdev) return -EINVAL; rtw89_regd_setup_unii4(rtwdev, wiphy); + rtw89_regd_setup_6ghz(rtwdev, wiphy); wiphy->reg_notifier = rtw89_regd_notifier; return 0; |