mt76: mt7915: add tsf related callbacks

It is useful for IBSS Mesh to adjust t_clockdrift.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Reported-by: Shayne Chen <shayne.chen@mediatek.com>
Tested-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
index b3e26ff..ef0c919 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
@@ -655,6 +655,57 @@ mt7915_get_stats(struct ieee80211_hw *hw,
        return 0;
 }
 
+static u64
+mt7915_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+{
+       struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
+       struct mt7915_dev *dev = mt7915_hw_dev(hw);
+       struct mt7915_phy *phy = mt7915_hw_phy(hw);
+       bool band = phy != &dev->phy;
+       union {
+               u64 t64;
+               u32 t32[2];
+       } tsf;
+       u16 n;
+
+       mutex_lock(&dev->mt76.mutex);
+
+       n = mvif->omac_idx > HW_BSSID_MAX ? HW_BSSID_0 : mvif->omac_idx;
+       /* TSF software read */
+       mt76_set(dev, MT_LPON_TCR(band, n), MT_LPON_TCR_SW_MODE);
+       tsf.t32[0] = mt76_rr(dev, MT_LPON_UTTR0(band));
+       tsf.t32[1] = mt76_rr(dev, MT_LPON_UTTR1(band));
+
+       mutex_unlock(&dev->mt76.mutex);
+
+       return tsf.t64;
+}
+
+static void
+mt7915_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+              u64 timestamp)
+{
+       struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
+       struct mt7915_dev *dev = mt7915_hw_dev(hw);
+       struct mt7915_phy *phy = mt7915_hw_phy(hw);
+       bool band = phy != &dev->phy;
+       union {
+               u64 t64;
+               u32 t32[2];
+       } tsf = { .t64 = timestamp, };
+       u16 n;
+
+       mutex_lock(&dev->mt76.mutex);
+
+       n = mvif->omac_idx > HW_BSSID_MAX ? HW_BSSID_0 : mvif->omac_idx;
+       mt76_wr(dev, MT_LPON_UTTR0(band), tsf.t32[0]);
+       mt76_wr(dev, MT_LPON_UTTR1(band), tsf.t32[1]);
+       /* TSF software overwrite */
+       mt76_set(dev, MT_LPON_TCR(band, n), MT_LPON_TCR_SW_WRITE);
+
+       mutex_unlock(&dev->mt76.mutex);
+}
+
 static void
 mt7915_set_coverage_class(struct ieee80211_hw *hw, s16 coverage_class)
 {
@@ -767,6 +818,8 @@ const struct ieee80211_ops mt7915_ops = {
        .get_txpower = mt76_get_txpower,
        .channel_switch_beacon = mt7915_channel_switch_beacon,
        .get_stats = mt7915_get_stats,
+       .get_tsf = mt7915_get_tsf,
+       .set_tsf = mt7915_set_tsf,
        .get_survey = mt76_get_survey,
        .get_antenna = mt76_get_antenna,
        .set_antenna = mt7915_set_antenna,

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
index 572bdc1..6600fc6 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
@@ -75,6 +75,17 @@
 #define MT_DMA_DCR0_MAX_RX_LEN         GENMASK(15, 3)
 #define MT_DMA_DCR0_RXD_G5_EN          BIT(23)
 
+/* LPON: band 0(0x24200), band 1(0xa4200) */
+#define MT_WF_LPON_BASE(_band)         ((_band) ? 0xa4200 : 0x24200)
+#define MT_WF_LPON(_band, ofs)         (MT_WF_LPON_BASE(_band) + (ofs))
+
+#define MT_LPON_UTTR0(_band)           MT_WF_LPON(_band, 0x080)
+#define MT_LPON_UTTR1(_band)           MT_WF_LPON(_band, 0x084)
+
+#define MT_LPON_TCR(_band, n)          MT_WF_LPON(_band, 0x0a8 + (n) * 4)
+#define MT_LPON_TCR_SW_MODE            GENMASK(1, 0)
+#define MT_LPON_TCR_SW_WRITE           BIT(0)
+
 /* MIB: band 0(0x24800), band 1(0xa4800) */
 #define MT_WF_MIB_BASE(_band)          ((_band) ? 0xa4800 : 0x24800)
 #define MT_WF_MIB(_band, ofs)          (MT_WF_MIB_BASE(_band) + (ofs))