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Date:   Tue, 19 Apr 2022 21:53:42 +0000
From:   Adam Wujek <dev_public@wujek.eu>
Cc:     Adam Wujek <dev_public@wujek.eu>,
        Guenter Roeck <linux@roeck-us.net>,
        Jean Delvare <jdelvare@suse.com>, linux-hwmon@vger.kernel.org,
        linux-kernel@vger.kernel.org
Reply-To: Adam Wujek <dev_public@wujek.eu>
Subject: [PATCH] hwmon: (pmbus) add MFR_* registers to debugfs
Message-ID: <20220419215326.309991-1-dev_public@wujek.eu>
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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@wujek.eu>
---
 drivers/hwmon/pmbus/pmbus_core.c | 85 ++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)

diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_c=
ore.c
index ef9989be8f89..6dc63f364ee6 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -2156,6 +2156,31 @@ static int pmbus_debugfs_get_status(void *data, u64 =
*val)
 DEFINE_DEBUGFS_ATTRIBUTE(pmbus_debugfs_ops_status, pmbus_debugfs_get_statu=
s,
 =09=09=09 NULL, "0x%04llx\n");

+
+static ssize_t pmbus_debugfs_mfr_read(struct file *file, char __user *buf,
+=09=09=09=09       size_t count, loff_t *ppos)
+{
+=09int rc;
+=09struct pmbus_debugfs_entry *entry =3D file->private_data;
+=09char data[I2C_SMBUS_BLOCK_MAX + 2] =3D { 0 };
+
+=09rc =3D i2c_smbus_read_block_data(entry->client, entry->reg, data);
+=09if (rc < 0)
+=09=09return rc;
+
+=09data[rc] =3D '\n';
+=09rc +=3D 2;
+
+=09return simple_read_from_buffer(buf, count, ppos, data, rc);
+}
+
+static const struct file_operations pmbus_debugfs_ops_mfr =3D {
+=09.llseek =3D noop_llseek,
+=09.read =3D pmbus_debugfs_mfr_read,
+=09.write =3D NULL,
+=09.open =3D simple_open,
+};
+
 static int pmbus_init_debugfs(struct i2c_client *client,
 =09=09=09      struct pmbus_data *data)
 {
@@ -2286,6 +2311,66 @@ static int pmbus_init_debugfs(struct i2c_client *cli=
ent,
 =09=09=09=09=09    &entries[idx++],
 =09=09=09=09=09    &pmbus_debugfs_ops);
 =09=09}
+
+=09=09if (pmbus_check_byte_register(client, i, PMBUS_MFR_ID)) {
+=09=09=09entries[idx].client =3D client;
+=09=09=09entries[idx].page =3D i;
+=09=09=09entries[idx].reg =3D PMBUS_MFR_ID;
+=09=09=09scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_id", i);
+=09=09=09debugfs_create_file(name, 0444, data->debugfs,
+=09=09=09=09=09    &entries[idx++],
+=09=09=09=09=09    &pmbus_debugfs_ops_mfr);
+=09=09}
+
+=09=09if (pmbus_check_byte_register(client, i, PMBUS_MFR_MODEL)) {
+=09=09=09entries[idx].client =3D client;
+=09=09=09entries[idx].page =3D i;
+=09=09=09entries[idx].reg =3D PMBUS_MFR_MODEL;
+=09=09=09scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_model", i);
+=09=09=09debugfs_create_file(name, 0444, data->debugfs,
+=09=09=09=09=09    &entries[idx++],
+=09=09=09=09=09    &pmbus_debugfs_ops_mfr);
+=09=09}
+
+=09=09if (pmbus_check_byte_register(client, i, PMBUS_MFR_REVISION)) {
+=09=09=09entries[idx].client =3D client;
+=09=09=09entries[idx].page =3D i;
+=09=09=09entries[idx].reg =3D PMBUS_MFR_REVISION;
+=09=09=09scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_revision", i);
+=09=09=09debugfs_create_file(name, 0444, data->debugfs,
+=09=09=09=09=09    &entries[idx++],
+=09=09=09=09=09    &pmbus_debugfs_ops_mfr);
+=09=09}
+
+=09=09if (pmbus_check_byte_register(client, i, PMBUS_MFR_LOCATION)) {
+=09=09=09entries[idx].client =3D client;
+=09=09=09entries[idx].page =3D i;
+=09=09=09entries[idx].reg =3D PMBUS_MFR_LOCATION;
+=09=09=09scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_location", i);
+=09=09=09debugfs_create_file(name, 0444, data->debugfs,
+=09=09=09=09=09    &entries[idx++],
+=09=09=09=09=09    &pmbus_debugfs_ops_mfr);
+=09=09}
+
+=09=09if (pmbus_check_byte_register(client, i, PMBUS_MFR_DATE)) {
+=09=09=09entries[idx].client =3D client;
+=09=09=09entries[idx].page =3D i;
+=09=09=09entries[idx].reg =3D PMBUS_MFR_DATE;
+=09=09=09scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_date", i);
+=09=09=09debugfs_create_file(name, 0444, data->debugfs,
+=09=09=09=09=09    &entries[idx++],
+=09=09=09=09=09    &pmbus_debugfs_ops_mfr);
+=09=09}
+
+=09=09if (pmbus_check_byte_register(client, i, PMBUS_MFR_SERIAL)) {
+=09=09=09entries[idx].client =3D client;
+=09=09=09entries[idx].page =3D i;
+=09=09=09entries[idx].reg =3D PMBUS_MFR_SERIAL;
+=09=09=09scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_serial", i);
+=09=09=09debugfs_create_file(name, 0444, data->debugfs,
+=09=09=09=09=09    &entries[idx++],
+=09=09=09=09=09    &pmbus_debugfs_ops_mfr);
+=09=09}
 =09}

 =09return 0;
--
2.17.1