It is useful for IBSS Mesh to adjust t_clockdrift.
Signed-off-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
Reported-by: Shayne Chen <shayne.chen@xxxxxxxxxxxx>
Tested-by: Evelyn Tsai <evelyn.tsai@xxxxxxxxxxxx>
---
.../net/wireless/mediatek/mt76/mt7915/main.c | 53 +++++++++++++++++++
.../net/wireless/mediatek/mt76/mt7915/regs.h | 11 ++++
2 files changed, 64 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
index b3e26ff32287..ef0c91990b49 100644
--- 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 572bdc16fb2d..6600fc625196 100644
--- 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))
--
2.18.0
