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path: root/drivers/net/wireless/realtek/rtw88/util.c
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Diffstat (limited to 'drivers/net/wireless/realtek/rtw88/util.c')
-rw-r--r--drivers/net/wireless/realtek/rtw88/util.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw88/util.c b/drivers/net/wireless/realtek/rtw88/util.c
index 212070c2baa8..10f1117c0cfb 100644
--- a/drivers/net/wireless/realtek/rtw88/util.c
+++ b/drivers/net/wireless/realtek/rtw88/util.c
@@ -70,3 +70,30 @@ void rtw_restore_reg(struct rtw_dev *rtwdev,
}
}
}
+
+void rtw_desc_to_mcsrate(u16 rate, u8 *mcs, u8 *nss)
+{
+ if (rate <= DESC_RATE54M)
+ return;
+
+ if (rate >= DESC_RATEVHT1SS_MCS0 &&
+ rate <= DESC_RATEVHT1SS_MCS9) {
+ *nss = 1;
+ *mcs = rate - DESC_RATEVHT1SS_MCS0;
+ } else if (rate >= DESC_RATEVHT2SS_MCS0 &&
+ rate <= DESC_RATEVHT2SS_MCS9) {
+ *nss = 2;
+ *mcs = rate - DESC_RATEVHT2SS_MCS0;
+ } else if (rate >= DESC_RATEVHT3SS_MCS0 &&
+ rate <= DESC_RATEVHT3SS_MCS9) {
+ *nss = 3;
+ *mcs = rate - DESC_RATEVHT3SS_MCS0;
+ } else if (rate >= DESC_RATEVHT4SS_MCS0 &&
+ rate <= DESC_RATEVHT4SS_MCS9) {
+ *nss = 4;
+ *mcs = rate - DESC_RATEVHT4SS_MCS0;
+ } else if (rate >= DESC_RATEMCS0 &&
+ rate <= DESC_RATEMCS15) {
+ *mcs = rate - DESC_RATEMCS0;
+ }
+}