linux-kernel - [RFC Patch Resend 2/2] add npcm7xx debug counters as sysfs attributes

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Date:   Tue,  9 Nov 2021 14:53:21 -0800
From:   Sui Chen <suichen@...gle.com>
To:     linux-kernel@...r.kernel.org
Cc:     Sui Chen <suichen@...gle.com>, Tali Perry <tali.perry1@...il.com>
Subject: [RFC Patch Resend 2/2] add npcm7xx debug counters as sysfs attributes

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

Signed-off-by: Sui Chen <suichen@...gle.com>
Reviewed-by: Tali Perry <tali.perry1@...il.com>
---
 drivers/i2c/busses/i2c-npcm7xx.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/i2c/busses/i2c-npcm7xx.c b/drivers/i2c/busses/i2c-npcm7xx.c
index 2ad166355ec9b..def044207cae2 100644
--- a/drivers/i2c/busses/i2c-npcm7xx.c
+++ b/drivers/i2c/busses/i2c-npcm7xx.c
@@ -2224,6 +2224,14 @@ static void npcm_i2c_init_debugfs(struct platform_device *pdev,
 	debugfs_create_u64("rec_fail_cnt", 0444, d, &bus->rec_fail_cnt);
 	debugfs_create_u64("timeout_cnt", 0444, d, &bus->timeout_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);
+
 	bus->debugfs = d;
 }
 
-- 
2.34.0.rc0.344.g81b53c2807-goog