diff options
author | Shayne Chen <shayne.chen@mediatek.com> | 2022-04-18 16:03:30 +0800 |
---|---|---|
committer | Felix Fietkau <nbd@nbd.name> | 2022-05-13 09:39:35 +0200 |
commit | 0a17329ae9c1fa0fde43b45e7d04a10708020b1b (patch) | |
tree | 3afcb42dbd37123b6bf2da6c666b44bf5fa47155 /drivers/net/wireless/mediatek | |
parent | ad483ed9dd5193a54293269c852a29051813b7bd (diff) | |
download | linux-0a17329ae9c1fa0fde43b45e7d04a10708020b1b.tar.bz2 |
mt76: mt7915: add debugfs knob for RF registers read/write
Add RF registers read/write support for debugging RF issues, which
should be processed by mcu commands.
The index of rf registers use the generic regidx, and are combined
with two parts: WF selection [31:28] and offset [27:0].
Reviewed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek')
-rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c | 32 | ||||
-rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 29 | ||||
-rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h | 1 |
3 files changed, 62 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c index e0b7f1efb113..1628840e8931 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c @@ -867,6 +867,36 @@ mt7915_twt_stats(struct seq_file *s, void *data) return 0; } +/* The index of RF registers use the generic regidx, combined with two parts: + * WF selection [31:28] and offset [27:0]. + */ +static int +mt7915_rf_regval_get(void *data, u64 *val) +{ + struct mt7915_dev *dev = data; + u32 regval; + int ret; + + ret = mt7915_mcu_rf_regval(dev, dev->mt76.debugfs_reg, ®val, false); + if (ret) + return ret; + + *val = le32_to_cpu(regval); + + return 0; +} + +static int +mt7915_rf_regval_set(void *data, u64 val) +{ + struct mt7915_dev *dev = data; + + return mt7915_mcu_rf_regval(dev, dev->mt76.debugfs_reg, (u32 *)&val, true); +} + +DEFINE_DEBUGFS_ATTRIBUTE(fops_rf_regval, mt7915_rf_regval_get, + mt7915_rf_regval_set, "0x%08llx\n"); + int mt7915_init_debugfs(struct mt7915_phy *phy) { struct mt7915_dev *dev = phy->dev; @@ -898,6 +928,8 @@ int mt7915_init_debugfs(struct mt7915_phy *phy) debugfs_create_devm_seqfile(dev->mt76.dev, "twt_stats", dir, mt7915_twt_stats); debugfs_create_file("ser_trigger", 0200, dir, dev, &fops_ser_trigger); + debugfs_create_file("rf_regval", 0600, dir, dev, &fops_rf_regval); + if (!dev->dbdc_support || phy->band_idx) { debugfs_create_u32("dfs_hw_pattern", 0400, dir, &dev->hw_pattern); diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c index 98a3b22ba549..4faa7b8b2778 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c @@ -3661,3 +3661,32 @@ int mt7915_mcu_twt_agrt_update(struct mt7915_dev *dev, return mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD(TWT_AGRT_UPDATE), &req, sizeof(req), true); } + +int mt7915_mcu_rf_regval(struct mt7915_dev *dev, u32 regidx, u32 *val, bool set) +{ + struct { + __le32 idx; + __le32 ofs; + __le32 data; + } __packed req = { + .idx = cpu_to_le32(u32_get_bits(regidx, GENMASK(31, 28))), + .ofs = cpu_to_le32(u32_get_bits(regidx, GENMASK(27, 0))), + .data = set ? cpu_to_le32(*val) : 0, + }; + struct sk_buff *skb; + int ret; + + if (set) + return mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD(RF_REG_ACCESS), + &req, sizeof(req), false); + + ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_EXT_QUERY(RF_REG_ACCESS), + &req, sizeof(req), true, &skb); + if (ret) + return ret; + + *val = le32_to_cpu(*(__le32 *)(skb->data + 8)); + dev_kfree_skb(skb); + + return 0; +} diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h index 419ff08176b4..6c590eff14f1 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h @@ -506,6 +506,7 @@ int mt7915_mcu_get_rx_rate(struct mt7915_phy *phy, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct rate_info *rate); int mt7915_mcu_rdd_background_enable(struct mt7915_phy *phy, struct cfg80211_chan_def *chandef); +int mt7915_mcu_rf_regval(struct mt7915_dev *dev, u32 regidx, u32 *val, bool set); int mt7915_mcu_wa_cmd(struct mt7915_dev *dev, int cmd, u32 a1, u32 a2, u32 a3); int mt7915_mcu_fw_log_2_host(struct mt7915_dev *dev, u8 type, u8 ctrl); int mt7915_mcu_fw_dbg_ctrl(struct mt7915_dev *dev, u32 module, u8 level); |