Useful for debugging gain adjustment issues triggered by signal strength changes.
Signed-off-by: Felix Fietkau <[email protected]> --- drivers/net/wireless/mediatek/mt76/mt76x2.h | 1 + .../net/wireless/mediatek/mt76/mt76x2_debugfs.c | 14 ++++++++++++++ drivers/net/wireless/mediatek/mt76/mt76x2_phy.c | 1 + 3 files changed, 16 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2.h b/drivers/net/wireless/mediatek/mt76/mt76x2.h index 06ca5a77dfdf..21de1168076d 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2.h +++ b/drivers/net/wireless/mediatek/mt76/mt76x2.h @@ -72,6 +72,7 @@ struct mt76x2_calibration { int avg_rssi[MT_MAX_CHAINS]; int avg_rssi_all; + u16 false_cca; s8 agc_gain_adjust; s8 low_gain; diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2_debugfs.c b/drivers/net/wireless/mediatek/mt76/mt76x2_debugfs.c index 955ea3e692dd..3f86e01049f3 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2_debugfs.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2_debugfs.c @@ -115,6 +115,18 @@ static const struct file_operations fops_dfs_stat = { .release = single_release, }; +static int read_agc(struct seq_file *file, void *data) +{ + struct mt76x2_dev *dev = dev_get_drvdata(file->private); + + seq_printf(file, "avg_rssi: %d\n", dev->cal.avg_rssi_all); + seq_printf(file, "low_gain: %d\n", dev->cal.low_gain); + seq_printf(file, "false_cca: %d\n", dev->cal.false_cca); + seq_printf(file, "agc_gain_adjust: %d\n", dev->cal.agc_gain_adjust); + + return 0; +} + void mt76x2_init_debugfs(struct mt76x2_dev *dev) { struct dentry *dir; @@ -130,4 +142,6 @@ void mt76x2_init_debugfs(struct mt76x2_dev *dev) debugfs_create_file("dfs_stats", 0400, dir, dev, &fops_dfs_stat); debugfs_create_devm_seqfile(dev->mt76.dev, "txpower", dir, read_txpower); + + debugfs_create_devm_seqfile(dev->mt76.dev, "agc", dir, read_agc); } diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2_phy.c b/drivers/net/wireless/mediatek/mt76/mt76x2_phy.c index 9c7b19ce73f2..94943aeb249d 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2_phy.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2_phy.c @@ -488,6 +488,7 @@ mt76x2_phy_adjust_vga_gain(struct mt76x2_dev *dev) u8 limit = dev->cal.low_gain > 0 ? 16 : 4; false_cca = FIELD_GET(MT_RX_STAT_1_CCA_ERRORS, mt76_rr(dev, MT_RX_STAT_1)); + dev->cal.false_cca = false_cca; if (false_cca > 800 && dev->cal.agc_gain_adjust < limit) dev->cal.agc_gain_adjust += 2; else if (false_cca < 10 && dev->cal.agc_gain_adjust > 0) -- 2.17.0
