linux-kernel - Re: [PATCH 2/2] hwmon: (pmbus) add MFR

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Date:   Wed, 20 Apr 2022 06:53:37 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Adam Wujek <dev_public@...ek.eu>
Cc:     Jean Delvare <jdelvare@...e.com>, linux-hwmon@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] hwmon: (pmbus) add MFR_* registers to debugfs

On 4/20/22 05:22, Adam Wujek wrote:
> Add registers to debugfs:
> PMBUS_MFR_ID
> PMBUS_MFR_MODEL
> PMBUS_MFR_REVISION
> PMBUS_MFR_LOCATION
> PMBUS_MFR_DATE
> PMBUS_MFR_SERIAL
> 
> Signed-off-by: Adam Wujek <dev_public@...ek.eu>

Where is patch 1/2, and why did you resend this patch ?

Guenter

> ---
>   drivers/hwmon/pmbus/pmbus_core.c | 84 ++++++++++++++++++++++++++++++++
>   1 file changed, 84 insertions(+)
> 
> diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
> index 0af7a3d74f47..1dc186780ccf 100644
> --- a/drivers/hwmon/pmbus/pmbus_core.c
> +++ b/drivers/hwmon/pmbus/pmbus_core.c
> @@ -2625,6 +2625,30 @@ static int pmbus_debugfs_get_status(void *data, u64 *val)
>   DEFINE_DEBUGFS_ATTRIBUTE(pmbus_debugfs_ops_status, pmbus_debugfs_get_status,
>   			 NULL, "0x%04llx\n");
> 
> +static ssize_t pmbus_debugfs_mfr_read(struct file *file, char __user *buf,
> +				       size_t count, loff_t *ppos)
> +{
> +	int rc;
> +	struct pmbus_debugfs_entry *entry = file->private_data;
> +	char data[I2C_SMBUS_BLOCK_MAX + 2] = { 0 };
> +
> +	rc = i2c_smbus_read_block_data(entry->client, entry->reg, data);
> +	if (rc < 0)
> +		return rc;
> +
> +	data[rc] = '\n';
> +	rc += 2;
> +
> +	return simple_read_from_buffer(buf, count, ppos, data, rc);
> +}
> +
> +static const struct file_operations pmbus_debugfs_ops_mfr = {
> +	.llseek = noop_llseek,
> +	.read = pmbus_debugfs_mfr_read,
> +	.write = NULL,
> +	.open = simple_open,
> +};
> +
>   static int pmbus_debugfs_get_pec(void *data, u64 *val)
>   {
>   	struct i2c_client *client = data;
> @@ -2801,6 +2825,66 @@ static int pmbus_init_debugfs(struct i2c_client *client,
>   					    &entries[idx++],
>   					    &pmbus_debugfs_ops);
>   		}
> +
> +		if (pmbus_check_byte_register(client, i, PMBUS_MFR_ID)) {
> +			entries[idx].client = client;
> +			entries[idx].page = i;
> +			entries[idx].reg = PMBUS_MFR_ID;
> +			scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_id", i);
> +			debugfs_create_file(name, 0444, data->debugfs,
> +					    &entries[idx++],
> +					    &pmbus_debugfs_ops_mfr);
> +		}
> +
> +		if (pmbus_check_byte_register(client, i, PMBUS_MFR_MODEL)) {
> +			entries[idx].client = client;
> +			entries[idx].page = i;
> +			entries[idx].reg = PMBUS_MFR_MODEL;
> +			scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_model", i);
> +			debugfs_create_file(name, 0444, data->debugfs,
> +					    &entries[idx++],
> +					    &pmbus_debugfs_ops_mfr);
> +		}
> +
> +		if (pmbus_check_byte_register(client, i, PMBUS_MFR_REVISION)) {
> +			entries[idx].client = client;
> +			entries[idx].page = i;
> +			entries[idx].reg = PMBUS_MFR_REVISION;
> +			scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_revision", i);
> +			debugfs_create_file(name, 0444, data->debugfs,
> +					    &entries[idx++],
> +					    &pmbus_debugfs_ops_mfr);
> +		}
> +
> +		if (pmbus_check_byte_register(client, i, PMBUS_MFR_LOCATION)) {
> +			entries[idx].client = client;
> +			entries[idx].page = i;
> +			entries[idx].reg = PMBUS_MFR_LOCATION;
> +			scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_location", i);
> +			debugfs_create_file(name, 0444, data->debugfs,
> +					    &entries[idx++],
> +					    &pmbus_debugfs_ops_mfr);
> +		}
> +
> +		if (pmbus_check_byte_register(client, i, PMBUS_MFR_DATE)) {
> +			entries[idx].client = client;
> +			entries[idx].page = i;
> +			entries[idx].reg = PMBUS_MFR_DATE;
> +			scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_date", i);
> +			debugfs_create_file(name, 0444, data->debugfs,
> +					    &entries[idx++],
> +					    &pmbus_debugfs_ops_mfr);
> +		}
> +
> +		if (pmbus_check_byte_register(client, i, PMBUS_MFR_SERIAL)) {
> +			entries[idx].client = client;
> +			entries[idx].page = i;
> +			entries[idx].reg = PMBUS_MFR_SERIAL;
> +			scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_serial", i);
> +			debugfs_create_file(name, 0444, data->debugfs,
> +					    &entries[idx++],
> +					    &pmbus_debugfs_ops_mfr);
> +		}
>   	}
> 
>   	return devm_add_action_or_reset(data->dev,
> --
> 2.25.1
> 
>