[RFC Patch v2 3/3] add npcm7xx debug counters as sysfs attributes

Sui Chen
2021-12-03T02:37:54Z

This change adds npcm7xx debug counters as sysfs attributes using the
i2c_adapter_stats_register_counter function.

Signed-off-by: Sui Chen <suichen@google.com>
Reviewed-by: Tali Perry <tali.perry1@gmail.com>
---
drivers/i2c/busses/i2c-npcm7xx.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/i2c/busses/i2c-npcm7xx.c b/drivers/i2c/busses/i2c-npcm7xx.c
index 0b87706de31d7..1268b2d71ca0a 100644
--- a/drivers/i2c/busses/i2c-npcm7xx.c
+++ b/drivers/i2c/busses/i2c-npcm7xx.c
@@ -2228,6 +2228,15 @@ static void npcm_i2c_init_debugfs(struct platform_device *pdev,
debugfs_create_u64("timeout_cnt", 0444, d, &bus->timeout_cnt);
debugfs_create_u64("tx_complete_cnt", 0444, d, &bus->tx_complete_cnt);

+ /* register debug counters in sysfs */
+ i2c_adapter_stats_register_counter(&bus->adap, "ber_cnt", &bus->ber_cnt);
+ i2c_adapter_stats_register_counter(&bus->adap, "nack_cnt", &bus->nack_cnt);
+ i2c_adapter_stats_register_counter(&bus->adap, "rec_succ_cnt", &bus->rec_succ_cnt);
+ i2c_adapter_stats_register_counter(&bus->adap, "rec_fail_cnt", &bus->rec_fail_cnt);
+ i2c_adapter_stats_register_counter(&bus->adap, "timeout_cnt", &bus->timeout_cnt);
+ i2c_adapter_stats_register_counter(&bus->adap, "i2c_speed", &bus->bus_freq);
+ i2c_adapter_stats_register_counter(&bus->adap, "tx_complete_cnt", &bus->tx_complete_cnt);
+
bus->debugfs = d;
}

--
2.34.0.384.gca35af8252-goog