From 8d2a02b24d66aa359e83eebc1ed3c0f85367a1cb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 16 May 2024 03:11:33 +0000
Subject: [PATCH] AX88772C_eeprom and ax8872c build together
---
kernel/drivers/hwmon/max6697.c | 242 +++++++++++++++++++++++++++++++-----------------
1 files changed, 155 insertions(+), 87 deletions(-)
diff --git a/kernel/drivers/hwmon/max6697.c b/kernel/drivers/hwmon/max6697.c
index 6df28fe..fc32411 100644
--- a/kernel/drivers/hwmon/max6697.c
+++ b/kernel/drivers/hwmon/max6697.c
@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2012 Guenter Roeck <linux@roeck-us.net>
*
* based on max1668.c
* Copyright (c) 2011 David George <david.george@ska.ac.za>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/module.h>
@@ -66,6 +57,8 @@
#define MAX6581_REG_IDEALITY_SELECT 0x4c
#define MAX6581_REG_OFFSET 0x4d
#define MAX6581_REG_OFFSET_SELECT 0x4e
+#define MAX6581_OFFSET_MIN -31750
+#define MAX6581_OFFSET_MAX 31750
#define MAX6697_CONV_TIME 156 /* ms per channel, worst case */
@@ -181,6 +174,11 @@
},
};
+static inline int max6581_offset_to_millic(int val)
+{
+ return sign_extend32(val, 7) * 250;
+}
+
static struct max6697_data *max6697_update_device(struct device *dev)
{
struct max6697_data *data = dev_get_drvdata(dev);
@@ -251,7 +249,7 @@
return ret;
}
-static ssize_t show_temp_input(struct device *dev,
+static ssize_t temp_input_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
int index = to_sensor_dev_attr(devattr)->index;
@@ -267,8 +265,8 @@
return sprintf(buf, "%d\n", temp * 125);
}
-static ssize_t show_temp(struct device *dev,
- struct device_attribute *devattr, char *buf)
+static ssize_t temp_show(struct device *dev, struct device_attribute *devattr,
+ char *buf)
{
int nr = to_sensor_dev_attr_2(devattr)->nr;
int index = to_sensor_dev_attr_2(devattr)->index;
@@ -284,7 +282,7 @@
return sprintf(buf, "%d\n", temp * 1000);
}
-static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
+static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int index = to_sensor_dev_attr(attr)->index;
@@ -299,9 +297,9 @@
return sprintf(buf, "%u\n", (data->alarms >> index) & 0x1);
}
-static ssize_t set_temp(struct device *dev,
- struct device_attribute *devattr,
- const char *buf, size_t count)
+static ssize_t temp_store(struct device *dev,
+ struct device_attribute *devattr, const char *buf,
+ size_t count)
{
int nr = to_sensor_dev_attr_2(devattr)->nr;
int index = to_sensor_dev_attr_2(devattr)->index;
@@ -326,79 +324,136 @@
return ret < 0 ? ret : count;
}
-static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0);
-static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 0, MAX6697_TEMP_MAX);
-static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 0, MAX6697_TEMP_CRIT);
+static ssize_t offset_store(struct device *dev, struct device_attribute *devattr, const char *buf,
+ size_t count)
+{
+ int val, ret, index, select;
+ struct max6697_data *data;
+ bool channel_enabled;
+ long temp;
-static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1);
-static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 1, MAX6697_TEMP_MAX);
-static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 1, MAX6697_TEMP_CRIT);
+ index = to_sensor_dev_attr(devattr)->index;
+ data = dev_get_drvdata(dev);
+ ret = kstrtol(buf, 10, &temp);
+ if (ret < 0)
+ return ret;
-static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2);
-static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 2, MAX6697_TEMP_MAX);
-static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 2, MAX6697_TEMP_CRIT);
+ mutex_lock(&data->update_lock);
+ select = i2c_smbus_read_byte_data(data->client, MAX6581_REG_OFFSET_SELECT);
+ if (select < 0) {
+ ret = select;
+ goto abort;
+ }
+ channel_enabled = (select & (1 << (index - 1)));
+ temp = clamp_val(temp, MAX6581_OFFSET_MIN, MAX6581_OFFSET_MAX);
+ val = DIV_ROUND_CLOSEST(temp, 250);
+ /* disable the offset for channel if the new offset is 0 */
+ if (val == 0) {
+ if (channel_enabled)
+ ret = i2c_smbus_write_byte_data(data->client, MAX6581_REG_OFFSET_SELECT,
+ select & ~(1 << (index - 1)));
+ ret = ret < 0 ? ret : count;
+ goto abort;
+ }
+ if (!channel_enabled) {
+ ret = i2c_smbus_write_byte_data(data->client, MAX6581_REG_OFFSET_SELECT,
+ select | (1 << (index - 1)));
+ if (ret < 0)
+ goto abort;
+ }
+ ret = i2c_smbus_write_byte_data(data->client, MAX6581_REG_OFFSET, val);
+ ret = ret < 0 ? ret : count;
-static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp_input, NULL, 3);
-static SENSOR_DEVICE_ATTR_2(temp4_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 3, MAX6697_TEMP_MAX);
-static SENSOR_DEVICE_ATTR_2(temp4_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 3, MAX6697_TEMP_CRIT);
+abort:
+ mutex_unlock(&data->update_lock);
+ return ret;
+}
-static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp_input, NULL, 4);
-static SENSOR_DEVICE_ATTR_2(temp5_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 4, MAX6697_TEMP_MAX);
-static SENSOR_DEVICE_ATTR_2(temp5_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 4, MAX6697_TEMP_CRIT);
+static ssize_t offset_show(struct device *dev, struct device_attribute *devattr, char *buf)
+{
+ struct max6697_data *data;
+ int select, ret, index;
-static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp_input, NULL, 5);
-static SENSOR_DEVICE_ATTR_2(temp6_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 5, MAX6697_TEMP_MAX);
-static SENSOR_DEVICE_ATTR_2(temp6_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 5, MAX6697_TEMP_CRIT);
+ index = to_sensor_dev_attr(devattr)->index;
+ data = dev_get_drvdata(dev);
+ mutex_lock(&data->update_lock);
+ select = i2c_smbus_read_byte_data(data->client, MAX6581_REG_OFFSET_SELECT);
+ if (select < 0)
+ ret = select;
+ else if (select & (1 << (index - 1)))
+ ret = i2c_smbus_read_byte_data(data->client, MAX6581_REG_OFFSET);
+ else
+ ret = 0;
+ mutex_unlock(&data->update_lock);
+ return ret < 0 ? ret : sprintf(buf, "%d\n", max6581_offset_to_millic(ret));
+}
-static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp_input, NULL, 6);
-static SENSOR_DEVICE_ATTR_2(temp7_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 6, MAX6697_TEMP_MAX);
-static SENSOR_DEVICE_ATTR_2(temp7_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 6, MAX6697_TEMP_CRIT);
+static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0);
+static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, 0, MAX6697_TEMP_MAX);
+static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, 0, MAX6697_TEMP_CRIT);
-static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp_input, NULL, 7);
-static SENSOR_DEVICE_ATTR_2(temp8_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 7, MAX6697_TEMP_MAX);
-static SENSOR_DEVICE_ATTR_2(temp8_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
- 7, MAX6697_TEMP_CRIT);
+static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1);
+static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, 1, MAX6697_TEMP_MAX);
+static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, 1, MAX6697_TEMP_CRIT);
-static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 22);
-static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 16);
-static SENSOR_DEVICE_ATTR(temp3_max_alarm, S_IRUGO, show_alarm, NULL, 17);
-static SENSOR_DEVICE_ATTR(temp4_max_alarm, S_IRUGO, show_alarm, NULL, 18);
-static SENSOR_DEVICE_ATTR(temp5_max_alarm, S_IRUGO, show_alarm, NULL, 19);
-static SENSOR_DEVICE_ATTR(temp6_max_alarm, S_IRUGO, show_alarm, NULL, 20);
-static SENSOR_DEVICE_ATTR(temp7_max_alarm, S_IRUGO, show_alarm, NULL, 21);
-static SENSOR_DEVICE_ATTR(temp8_max_alarm, S_IRUGO, show_alarm, NULL, 23);
+static SENSOR_DEVICE_ATTR_RO(temp3_input, temp_input, 2);
+static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, 2, MAX6697_TEMP_MAX);
+static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, 2, MAX6697_TEMP_CRIT);
-static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 14);
-static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 8);
-static SENSOR_DEVICE_ATTR(temp3_crit_alarm, S_IRUGO, show_alarm, NULL, 9);
-static SENSOR_DEVICE_ATTR(temp4_crit_alarm, S_IRUGO, show_alarm, NULL, 10);
-static SENSOR_DEVICE_ATTR(temp5_crit_alarm, S_IRUGO, show_alarm, NULL, 11);
-static SENSOR_DEVICE_ATTR(temp6_crit_alarm, S_IRUGO, show_alarm, NULL, 12);
-static SENSOR_DEVICE_ATTR(temp7_crit_alarm, S_IRUGO, show_alarm, NULL, 13);
-static SENSOR_DEVICE_ATTR(temp8_crit_alarm, S_IRUGO, show_alarm, NULL, 15);
+static SENSOR_DEVICE_ATTR_RO(temp4_input, temp_input, 3);
+static SENSOR_DEVICE_ATTR_2_RW(temp4_max, temp, 3, MAX6697_TEMP_MAX);
+static SENSOR_DEVICE_ATTR_2_RW(temp4_crit, temp, 3, MAX6697_TEMP_CRIT);
-static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 1);
-static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 2);
-static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_alarm, NULL, 3);
-static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_alarm, NULL, 4);
-static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_alarm, NULL, 5);
-static SENSOR_DEVICE_ATTR(temp7_fault, S_IRUGO, show_alarm, NULL, 6);
-static SENSOR_DEVICE_ATTR(temp8_fault, S_IRUGO, show_alarm, NULL, 7);
+static SENSOR_DEVICE_ATTR_RO(temp5_input, temp_input, 4);
+static SENSOR_DEVICE_ATTR_2_RW(temp5_max, temp, 4, MAX6697_TEMP_MAX);
+static SENSOR_DEVICE_ATTR_2_RW(temp5_crit, temp, 4, MAX6697_TEMP_CRIT);
+
+static SENSOR_DEVICE_ATTR_RO(temp6_input, temp_input, 5);
+static SENSOR_DEVICE_ATTR_2_RW(temp6_max, temp, 5, MAX6697_TEMP_MAX);
+static SENSOR_DEVICE_ATTR_2_RW(temp6_crit, temp, 5, MAX6697_TEMP_CRIT);
+
+static SENSOR_DEVICE_ATTR_RO(temp7_input, temp_input, 6);
+static SENSOR_DEVICE_ATTR_2_RW(temp7_max, temp, 6, MAX6697_TEMP_MAX);
+static SENSOR_DEVICE_ATTR_2_RW(temp7_crit, temp, 6, MAX6697_TEMP_CRIT);
+
+static SENSOR_DEVICE_ATTR_RO(temp8_input, temp_input, 7);
+static SENSOR_DEVICE_ATTR_2_RW(temp8_max, temp, 7, MAX6697_TEMP_MAX);
+static SENSOR_DEVICE_ATTR_2_RW(temp8_crit, temp, 7, MAX6697_TEMP_CRIT);
+
+static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 22);
+static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, alarm, 16);
+static SENSOR_DEVICE_ATTR_RO(temp3_max_alarm, alarm, 17);
+static SENSOR_DEVICE_ATTR_RO(temp4_max_alarm, alarm, 18);
+static SENSOR_DEVICE_ATTR_RO(temp5_max_alarm, alarm, 19);
+static SENSOR_DEVICE_ATTR_RO(temp6_max_alarm, alarm, 20);
+static SENSOR_DEVICE_ATTR_RO(temp7_max_alarm, alarm, 21);
+static SENSOR_DEVICE_ATTR_RO(temp8_max_alarm, alarm, 23);
+
+static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, alarm, 14);
+static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, alarm, 8);
+static SENSOR_DEVICE_ATTR_RO(temp3_crit_alarm, alarm, 9);
+static SENSOR_DEVICE_ATTR_RO(temp4_crit_alarm, alarm, 10);
+static SENSOR_DEVICE_ATTR_RO(temp5_crit_alarm, alarm, 11);
+static SENSOR_DEVICE_ATTR_RO(temp6_crit_alarm, alarm, 12);
+static SENSOR_DEVICE_ATTR_RO(temp7_crit_alarm, alarm, 13);
+static SENSOR_DEVICE_ATTR_RO(temp8_crit_alarm, alarm, 15);
+
+static SENSOR_DEVICE_ATTR_RO(temp2_fault, alarm, 1);
+static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, 2);
+static SENSOR_DEVICE_ATTR_RO(temp4_fault, alarm, 3);
+static SENSOR_DEVICE_ATTR_RO(temp5_fault, alarm, 4);
+static SENSOR_DEVICE_ATTR_RO(temp6_fault, alarm, 5);
+static SENSOR_DEVICE_ATTR_RO(temp7_fault, alarm, 6);
+static SENSOR_DEVICE_ATTR_RO(temp8_fault, alarm, 7);
+
+/* There is no offset for local temperature so starting from temp2 */
+static SENSOR_DEVICE_ATTR_RW(temp2_offset, offset, 1);
+static SENSOR_DEVICE_ATTR_RW(temp3_offset, offset, 2);
+static SENSOR_DEVICE_ATTR_RW(temp4_offset, offset, 3);
+static SENSOR_DEVICE_ATTR_RW(temp5_offset, offset, 4);
+static SENSOR_DEVICE_ATTR_RW(temp6_offset, offset, 5);
+static SENSOR_DEVICE_ATTR_RW(temp7_offset, offset, 6);
+static SENSOR_DEVICE_ATTR_RW(temp8_offset, offset, 7);
static DEVICE_ATTR(dummy, 0, NULL, NULL);
@@ -408,8 +463,8 @@
struct device *dev = container_of(kobj, struct device, kobj);
struct max6697_data *data = dev_get_drvdata(dev);
const struct max6697_chip_data *chip = data->chip;
- int channel = index / 6; /* channel number */
- int nr = index % 6; /* attribute index within channel */
+ int channel = index / 7; /* channel number */
+ int nr = index % 7; /* attribute index within channel */
if (channel >= chip->channels)
return 0;
@@ -418,6 +473,10 @@
return 0;
if (nr == 5 && !(chip->have_fault & (1 << channel)))
return 0;
+ /* offset reg is only supported on max6581 remote channels */
+ if (nr == 6)
+ if (data->type != max6581 || channel == 0)
+ return 0;
return attr->mode;
}
@@ -434,6 +493,7 @@
&sensor_dev_attr_temp1_crit.dev_attr.attr,
&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
&dev_attr_dummy.attr,
+ &dev_attr_dummy.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
@@ -441,6 +501,7 @@
&sensor_dev_attr_temp2_crit.dev_attr.attr,
&sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_fault.dev_attr.attr,
+ &sensor_dev_attr_temp2_offset.dev_attr.attr,
&sensor_dev_attr_temp3_input.dev_attr.attr,
&sensor_dev_attr_temp3_max.dev_attr.attr,
@@ -448,6 +509,7 @@
&sensor_dev_attr_temp3_crit.dev_attr.attr,
&sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp3_fault.dev_attr.attr,
+ &sensor_dev_attr_temp3_offset.dev_attr.attr,
&sensor_dev_attr_temp4_input.dev_attr.attr,
&sensor_dev_attr_temp4_max.dev_attr.attr,
@@ -455,6 +517,7 @@
&sensor_dev_attr_temp4_crit.dev_attr.attr,
&sensor_dev_attr_temp4_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp4_fault.dev_attr.attr,
+ &sensor_dev_attr_temp4_offset.dev_attr.attr,
&sensor_dev_attr_temp5_input.dev_attr.attr,
&sensor_dev_attr_temp5_max.dev_attr.attr,
@@ -462,6 +525,7 @@
&sensor_dev_attr_temp5_crit.dev_attr.attr,
&sensor_dev_attr_temp5_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp5_fault.dev_attr.attr,
+ &sensor_dev_attr_temp5_offset.dev_attr.attr,
&sensor_dev_attr_temp6_input.dev_attr.attr,
&sensor_dev_attr_temp6_max.dev_attr.attr,
@@ -469,6 +533,7 @@
&sensor_dev_attr_temp6_crit.dev_attr.attr,
&sensor_dev_attr_temp6_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp6_fault.dev_attr.attr,
+ &sensor_dev_attr_temp6_offset.dev_attr.attr,
&sensor_dev_attr_temp7_input.dev_attr.attr,
&sensor_dev_attr_temp7_max.dev_attr.attr,
@@ -476,6 +541,7 @@
&sensor_dev_attr_temp7_crit.dev_attr.attr,
&sensor_dev_attr_temp7_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp7_fault.dev_attr.attr,
+ &sensor_dev_attr_temp7_offset.dev_attr.attr,
&sensor_dev_attr_temp8_input.dev_attr.attr,
&sensor_dev_attr_temp8_max.dev_attr.attr,
@@ -483,6 +549,7 @@
&sensor_dev_attr_temp8_crit.dev_attr.attr,
&sensor_dev_attr_temp8_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp8_fault.dev_attr.attr,
+ &sensor_dev_attr_temp8_offset.dev_attr.attr,
NULL
};
@@ -618,8 +685,9 @@
return 0;
}
-static int max6697_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static const struct i2c_device_id max6697_id[];
+
+static int max6697_probe(struct i2c_client *client)
{
struct i2c_adapter *adapter = client->adapter;
struct device *dev = &client->dev;
@@ -637,7 +705,7 @@
if (client->dev.of_node)
data->type = (enum chips)of_device_get_match_data(&client->dev);
else
- data->type = id->driver_data;
+ data->type = i2c_match_id(max6697_id, client)->driver_data;
data->chip = &max6697_chip_data[data->type];
data->client = client;
mutex_init(&data->update_lock);
@@ -667,7 +735,7 @@
};
MODULE_DEVICE_TABLE(i2c, max6697_id);
-static const struct of_device_id max6697_of_match[] = {
+static const struct of_device_id __maybe_unused max6697_of_match[] = {
{
.compatible = "maxim,max6581",
.data = (void *)max6581
@@ -718,7 +786,7 @@
.name = "max6697",
.of_match_table = of_match_ptr(max6697_of_match),
},
- .probe = max6697_probe,
+ .probe_new = max6697_probe,
.id_table = max6697_id,
};
--
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