diff options
| author | Felix Fietkau <nbd@nbd.name> | 2018-06-21 11:17:59 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2018-06-27 19:15:06 +0300 |
| commit | 108ec4dafd6166bcf5804aaa0486c9f02649e809 (patch) | |
| tree | 11e2f42c9585f1d9ec66764e523bf91bd9bf75b1 | |
| parent | 8e31f0d35a881537cf9b4ebabf63791dde3bbb0a (diff) | |
| download | cachepc-linux-108ec4dafd6166bcf5804aaa0486c9f02649e809.tar.gz cachepc-linux-108ec4dafd6166bcf5804aaa0486c9f02649e809.zip | |
mt76: add a debugfs file to dump agc calibration information
Useful for debugging gain adjustment issues triggered by signal strength
changes.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x2.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x2_debugfs.c | 14 | ||||
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x2_phy.c | 1 |
3 files changed, 16 insertions, 0 deletions
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) |