From: Ping-Ke Shih <pkshih@realtek.com>
To: <kvalo@kernel.org>
Cc: <kevin_yang@realtek.com>, <linux-wireless@vger.kernel.org>
Subject: [PATCH 2/8] wifi: rtw89: regd: judge 6 GHz according to chip and BIOS
Date: Fri, 2 Jun 2023 23:05:50 +0800 [thread overview]
Message-ID: <20230602150556.36777-3-pkshih@realtek.com> (raw)
In-Reply-To: <20230602150556.36777-1-pkshih@realtek.com>
From: Zong-Zhe Yang <kevin_yang@realtek.com>
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>
---
drivers/net/wireless/realtek/rtw89/regd.c | 50 +++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtw89/regd.c b/drivers/net/wireless/realtek/rtw89/regd.c
index 377a7a1c560b7..43e589c023af8 100644
--- a/drivers/net/wireless/realtek/rtw89/regd.c
+++ b/drivers/net/wireless/realtek/rtw89/regd.c
@@ -330,6 +330,55 @@ static void rtw89_regd_setup_unii4(struct rtw89_dev *rtwdev,
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;
--
2.25.1
next prev parent reply other threads:[~2023-06-02 15:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-02 15:05 [PATCH 0/8] wifi: rtw89: support 6 GHz power types STD/LPI/VLP Ping-Ke Shih
2023-06-02 15:05 ` [PATCH 1/8] wifi: rtw89: refine clearing supported bands to check 2/5 GHz first Ping-Ke Shih
2023-06-08 15:59 ` Kalle Valo
2023-06-02 15:05 ` Ping-Ke Shih [this message]
2023-06-02 15:05 ` [PATCH 3/8] wifi: rtw89: regd: update regulatory map to R64-R40 Ping-Ke Shih
2023-06-02 15:05 ` [PATCH 4/8] wifi: rtw89: process regulatory for 6 GHz power type Ping-Ke Shih
2023-06-02 15:05 ` [PATCH 5/8] wifi: rtw89: 8852c: update TX power tables to R63 with 6 GHz power type (1 of 3) Ping-Ke Shih
2023-06-02 15:05 ` [PATCH 6/8] wifi: rtw89: 8852c: update TX power tables to R63 with 6 GHz power type (2 " Ping-Ke Shih
2023-06-02 15:05 ` [PATCH 7/8] wifi: rtw89: 8852c: update TX power tables to R63 with 6 GHz power type (3 " Ping-Ke Shih
2023-06-02 15:05 ` [PATCH 8/8] wifi: rtw89: 8852c: update RF radio A/B parameters to R63 Ping-Ke Shih
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