diff options
Diffstat (limited to 'drivers/net/wireless/realtek/rtw89/regd.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/regd.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw89/regd.c b/drivers/net/wireless/realtek/rtw89/regd.c index 6e5a740b128f..377a7a1c560b 100644 --- a/drivers/net/wireless/realtek/rtw89/regd.c +++ b/drivers/net/wireless/realtek/rtw89/regd.c @@ -2,6 +2,7 @@ /* Copyright(c) 2019-2020 Realtek Corporation */ +#include "acpi.h" #include "debug.h" #include "ps.h" @@ -282,6 +283,66 @@ do { \ __r->txpwr_regd[RTW89_BAND_6G]); \ } while (0) +static void rtw89_regd_setup_unii4(struct rtw89_dev *rtwdev, + struct wiphy *wiphy) +{ + const struct rtw89_chip_info *chip = rtwdev->chip; + bool regd_allow_unii_4 = chip->support_unii4; + struct ieee80211_supported_band *sband; + int ret; + u8 val; + + if (!chip->support_unii4) + goto bottom; + + ret = rtw89_acpi_evaluate_dsm(rtwdev, RTW89_ACPI_DSM_FUNC_59G_EN, &val); + if (ret) { + rtw89_debug(rtwdev, RTW89_DBG_REGD, + "acpi: cannot eval unii 4: %d\n", ret); + goto bottom; + } + + rtw89_debug(rtwdev, RTW89_DBG_REGD, + "acpi: eval if allow unii 4: %d\n", val); + + switch (val) { + case 0: + regd_allow_unii_4 = false; + break; + case 1: + regd_allow_unii_4 = true; + break; + default: + break; + } + +bottom: + rtw89_debug(rtwdev, RTW89_DBG_REGD, "regd: allow unii 4: %d\n", + regd_allow_unii_4); + + if (regd_allow_unii_4) + return; + + sband = wiphy->bands[NL80211_BAND_5GHZ]; + if (!sband) + return; + + sband->n_channels -= 3; +} + +int rtw89_regd_setup(struct rtw89_dev *rtwdev) +{ + struct wiphy *wiphy = rtwdev->hw->wiphy; + + if (!wiphy) + return -EINVAL; + + rtw89_regd_setup_unii4(rtwdev, wiphy); + + wiphy->reg_notifier = rtw89_regd_notifier; + return 0; +} + int rtw89_regd_init(struct rtw89_dev *rtwdev, void (*reg_notifier)(struct wiphy *wiphy, struct regulatory_request *request)) |