From 863c15a14e13107500273d95f014412b9d5207be Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Mon, 5 Aug 2019 08:55:53 +0200
Subject: [PATCH] mt76: mt7615: enable survey support
Git-commit: 863c15a14e13107500273d95f014412b9d5207be
Patch-mainline: v5.4-rc1
References: jsc#SLE-13430
Introduce channel survey support for mt7615 driver
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 24 ++++++++++++++++++++++
drivers/net/wireless/mediatek/mt76/mt7615/main.c | 5 +++++
drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h | 1 +
drivers/net/wireless/mediatek/mt76/mt7615/pci.c | 1 +
drivers/net/wireless/mediatek/mt76/mt7615/regs.h | 3 +++
5 files changed, 34 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index 0554aa2dbe2f..cf6bef101b57 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -1155,6 +1155,29 @@ mt7615_mac_scs_check(struct mt7615_dev *dev)
mt7615_mac_set_default_sensitivity(dev);
}
+void mt7615_update_channel(struct mt76_dev *mdev)
+{
+ struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
+ struct mt76_channel_state *state;
+ ktime_t cur_time;
+ u32 busy;
+
+ if (!test_bit(MT76_STATE_RUNNING, &mdev->state))
+ return;
+
+ state = mt76_channel_state(mdev, mdev->chandef.chan);
+ /* TODO: add DBDC support */
+ busy = mt76_get_field(dev, MT_MIB_SDR16(0), MT_MIB_BUSY_MASK);
+
+ spin_lock_bh(&mdev->cc_lock);
+ cur_time = ktime_get_boottime();
+ state->cc_busy += busy;
+ state->cc_active += ktime_to_us(ktime_sub(cur_time,
+ mdev->survey_time));
+ mdev->survey_time = cur_time;
+ spin_unlock_bh(&mdev->cc_lock);
+}
+
void mt7615_mac_work(struct work_struct *work)
{
struct mt7615_dev *dev;
@@ -1163,6 +1186,7 @@ void mt7615_mac_work(struct work_struct *work)
mac_work.work);
mutex_lock(&dev->mt76.mutex);
+ mt7615_update_channel(&dev->mt76);
if (++dev->mac_work_count == 5) {
mt7615_mac_scs_check(dev);
dev->mac_work_count = 0;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
index 5fdda85175c0..0b53bbdd9259 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
@@ -16,6 +16,7 @@ static int mt7615_start(struct ieee80211_hw *hw)
{
struct mt7615_dev *dev = hw->priv;
+ dev->mt76.survey_time = ktime_get_boottime();
set_bit(MT76_STATE_RUNNING, &dev->mt76.state);
ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mt76.mac_work,
MT7615_WATCHDOG_TIME);
@@ -149,6 +150,9 @@ static int mt7615_set_channel(struct mt7615_dev *dev)
ret = mt7615_dfs_init_radar_detector(dev);
mt7615_mac_cca_stats_reset(dev);
+ dev->mt76.survey_time = ktime_get_boottime();
+ /* TODO: add DBDC support */
+ mt76_rr(dev, MT_MIB_SDR16(0));
out:
clear_bit(MT76_RESET, &dev->mt76.state);
@@ -521,4 +525,5 @@ const struct ieee80211_ops mt7615_ops = {
.release_buffered_frames = mt76_release_buffered_frames,
.get_txpower = mt76_get_txpower,
.channel_switch_beacon = mt7615_channel_switch_beacon,
+ .get_survey = mt76_get_survey,
};
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
index 4e6ab3ab733a..a79f4ffcb70f 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
@@ -228,6 +228,7 @@ static inline void mt7615_irq_disable(struct mt7615_dev *dev, u32 mask)
mt76_set_irq_mask(&dev->mt76, MT_INT_MASK_CSR, mask, 0);
}
+void mt7615_update_channel(struct mt76_dev *mdev);
void mt7615_mac_cca_stats_reset(struct mt7615_dev *dev);
void mt7615_mac_set_scs(struct mt7615_dev *dev, bool enable);
int mt7615_mac_write_txwi(struct mt7615_dev *dev, __le32 *txwi,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/pci.c b/drivers/net/wireless/mediatek/mt76/mt7615/pci.c
index 9e82cb53fd60..e250607e0a80 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/pci.c
@@ -81,6 +81,7 @@ static int mt7615_pci_probe(struct pci_dev *pdev,
.sta_add = mt7615_sta_add,
.sta_assoc = mt7615_sta_assoc,
.sta_remove = mt7615_sta_remove,
+ .update_survey = mt7615_update_channel,
};
struct mt7615_dev *dev;
struct mt76_dev *mdev;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/regs.h b/drivers/net/wireless/mediatek/mt76/mt7615/regs.h
index 12fc12edf78c..b193814d5cf8 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/regs.h
@@ -255,6 +255,9 @@
#define MT_MIB_RTS_RETRIES_COUNT_MASK GENMASK(31, 16)
#define MT_MIB_RTS_COUNT_MASK GENMASK(15, 0)
+#define MT_MIB_SDR16(n) MT_WF_MIB(0x48 + ((n) << 9))
+#define MT_MIB_BUSY_MASK GENMASK(23, 0)
+
#define MT_EFUSE_BASE 0x81070000
#define MT_EFUSE_BASE_CTRL 0x000
#define MT_EFUSE_BASE_CTRL_EMPTY BIT(30)
--
2.16.4