rtw88: add regulatory strategy by chip type

Realtek chips can program a specific country domain on efuse to
indicate what is the expected rtw_regulatory. For chips with a
programmed country domain, we set REGULATORY_STRICT_REG to tell
stack to consider follow-up regulatory_hint() as the superset of
our regulatory rule. Besides, on driver side, only the request via
NL80211_REGDOM_SET_BY_DRIVER, which matches programmed country
domain, will be handled to keep rtw_regulatory unchanged.

For worldwide roaming chips, i.e. ones without a specific programmed
country domain, system of distro can set expected regulatory via
NL80211_REGDOM_SET_BY_USER. With setting from it, rtw_regulatory
will handle the requests only via NL80211_REGDOM_SET_BY_USER to
follow setting from system of distro. REGULATORY_COUNTRY_IE_IGNORE
will then be set to tell stack to ignore country IE for us. The
restrictions mentioned above will remain until 00, i.e. worldwide,
is set via NL80211_REGDOM_SET_BY_USER.

On the other hand, for worldwide roamin chips, if there is no
specific regulatory set via NL80211_REGDOM_SET_BY_USER, requests
from all regulatory notifications will be handled by rtw_regulatory.
And REGULATORY_COUNTRY_IE_IGNORE won't be set.

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@codeaurora.org>
Link: https://lore.kernel.org/r/20210830072014.12250-3-pkshih@realtek.com

1 files changed, 14 insertions, 1 deletions

diff --git a/drivers/net/wireless/realtek/rtw88/main.h b/drivers/net/wireless/realtek/rtw88/main.h
index 0d1bbc7e34a8..2e5cebba1f21 100644
--- a/drivers/net/wireless/realtek/rtw88/main.h
+++ b/drivers/net/wireless/realtek/rtw88/main.h
@@ -804,6 +804,19 @@ struct rtw_regulatory {
 	u8 txpwr_regd_5g;
 };
 
+enum rtw_regd_state {
+	RTW_REGD_STATE_WORLDWIDE,
+	RTW_REGD_STATE_PROGRAMMED,
+	RTW_REGD_STATE_SETTING,
+
+	RTW_REGD_STATE_NR,
+};
+
+struct rtw_regd {
+	enum rtw_regd_state state;
+	const struct rtw_regulatory *regulatory;
+};
+
 struct rtw_chip_ops {
 	int (*mac_init)(struct rtw_dev *rtwdev);
 	int (*dump_fw_crash)(struct rtw_dev *rtwdev);
@@ -1833,7 +1846,7 @@ struct rtw_dev {
 	struct rtw_efuse efuse;
 	struct rtw_sec_desc sec;
 	struct rtw_traffic_stats stats;
-	struct rtw_regulatory regd;
+	struct rtw_regd regd;
 	struct rtw_bf_info bf_info;
 
 	struct rtw_dm_info dm_info;