From: Zong-Zhe Yang Date: Mon, 8 May 2023 08:12:10 +0000 (+0800) Subject: wifi: rtw89: regd: judge UNII-4 according to BIOS and chip X-Git-Tag: v6.6.7~2536^2~277^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a002f98123dd5e6b6d66c1b42a37dfd6e25ade4c;p=platform%2Fkernel%2Flinux-starfive.git wifi: rtw89: regd: judge UNII-4 according to BIOS and chip For realtek regulatory, there are following two kinds of configurations to determine whether to allow UNII-4 band, i.e. 5.9GHz channels. 1. default setting according to whether chip support it or not 2. evaluate realtek ACPI DSM with RTW89_ACPI_DSM_FUNC_59G_EN (func. 6) If (1) is false, we won't try (2) and just disallow UNII-4. Otherwise, if (2) is not supported or returns a non-specific value, we follow the default setting either. Besides, this commit aims to add decision logic in rtw89 regulatory. Actually, driver doesn't register UNII-4 yet. That will be handled by another commit. Signed-off-by: Zong-Zhe Yang Signed-off-by: Ping-Ke Shih Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20230508081211.38760-3-pkshih@realtek.com --- diff --git a/drivers/net/wireless/realtek/rtw89/core.c b/drivers/net/wireless/realtek/rtw89/core.c index 630124f..09296e7 100644 --- a/drivers/net/wireless/realtek/rtw89/core.c +++ b/drivers/net/wireless/realtek/rtw89/core.c @@ -3850,7 +3850,12 @@ static int rtw89_core_register_hw(struct rtw89_dev *rtwdev) return ret; } - hw->wiphy->reg_notifier = rtw89_regd_notifier; + ret = rtw89_regd_setup(rtwdev); + if (ret) { + rtw89_err(rtwdev, "failed to set up regd\n"); + goto err_free_supported_band; + } + hw->wiphy->sar_capa = &rtw89_sar_capa; ret = ieee80211_register_hw(hw); diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h index f697902..cdd8e31 100644 --- a/drivers/net/wireless/realtek/rtw89/core.h +++ b/drivers/net/wireless/realtek/rtw89/core.h @@ -3179,6 +3179,7 @@ struct rtw89_chip_info { u8 support_chanctx_num; u8 support_bands; bool support_bw160; + bool support_unii4; bool support_ul_tb_ctrl; bool hw_sec_hdr; u8 rf_path_num; @@ -5044,6 +5045,7 @@ int rtw89_core_release_sta_ba_entry(struct rtw89_dev *rtwdev, void rtw89_vif_type_mapping(struct ieee80211_vif *vif, bool assoc); int rtw89_chip_info_setup(struct rtw89_dev *rtwdev); bool rtw89_ra_report_to_bitrate(struct rtw89_dev *rtwdev, u8 rpt_rate, u16 *bitrate); +int rtw89_regd_setup(struct rtw89_dev *rtwdev); int rtw89_regd_init(struct rtw89_dev *rtwdev, void (*reg_notifier)(struct wiphy *wiphy, struct regulatory_request *request)); void rtw89_regd_notifier(struct wiphy *wiphy, struct regulatory_request *request); diff --git a/drivers/net/wireless/realtek/rtw89/regd.c b/drivers/net/wireless/realtek/rtw89/regd.c index 6e5a740..7800ca3 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 +283,56 @@ 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; + 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); +} + +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)) diff --git a/drivers/net/wireless/realtek/rtw89/rtw8851b.c b/drivers/net/wireless/realtek/rtw89/rtw8851b.c index b68ebe9..00cabf92 100644 --- a/drivers/net/wireless/realtek/rtw89/rtw8851b.c +++ b/drivers/net/wireless/realtek/rtw89/rtw8851b.c @@ -123,6 +123,7 @@ const struct rtw89_chip_info rtw8851b_chip_info = { .support_bands = BIT(NL80211_BAND_2GHZ) | BIT(NL80211_BAND_5GHZ), .support_bw160 = false, + .support_unii4 = true, .support_ul_tb_ctrl = true, .hw_sec_hdr = false, .rf_path_num = 1, diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852a.c b/drivers/net/wireless/realtek/rtw89/rtw8852a.c index a8a58ff..4e6f3bb 100644 --- a/drivers/net/wireless/realtek/rtw89/rtw8852a.c +++ b/drivers/net/wireless/realtek/rtw89/rtw8852a.c @@ -2105,6 +2105,7 @@ const struct rtw89_chip_info rtw8852a_chip_info = { .support_bands = BIT(NL80211_BAND_2GHZ) | BIT(NL80211_BAND_5GHZ), .support_bw160 = false, + .support_unii4 = false, .support_ul_tb_ctrl = false, .hw_sec_hdr = false, .rf_path_num = 2, diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852b.c b/drivers/net/wireless/realtek/rtw89/rtw8852b.c index fa12d4a..b1a6b98 100644 --- a/drivers/net/wireless/realtek/rtw89/rtw8852b.c +++ b/drivers/net/wireless/realtek/rtw89/rtw8852b.c @@ -2536,6 +2536,7 @@ const struct rtw89_chip_info rtw8852b_chip_info = { .support_bands = BIT(NL80211_BAND_2GHZ) | BIT(NL80211_BAND_5GHZ), .support_bw160 = false, + .support_unii4 = true, .support_ul_tb_ctrl = true, .hw_sec_hdr = false, .rf_path_num = 2, diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852c.c b/drivers/net/wireless/realtek/rtw89/rtw8852c.c index d9272bc..f2e70bd 100644 --- a/drivers/net/wireless/realtek/rtw89/rtw8852c.c +++ b/drivers/net/wireless/realtek/rtw89/rtw8852c.c @@ -2836,6 +2836,7 @@ const struct rtw89_chip_info rtw8852c_chip_info = { BIT(NL80211_BAND_5GHZ) | BIT(NL80211_BAND_6GHZ), .support_bw160 = true, + .support_unii4 = true, .support_ul_tb_ctrl = false, .hw_sec_hdr = true, .rf_path_num = 2,