From 7b0eb0efa356b85224668f805c127a1dfc86bb36 Mon Sep 17 00:00:00 2001
From: pwisutti <33824525+pwisutti@users.noreply.github.com>
Date: Thu, 1 Mar 2018 01:20:01 +0700
Subject: [PATCH] [celestica] change to use lm75 standard driver (#19)
---
.../x86_64-cel_seastone-r0/sensors.conf | 27 +-
.../debian/platform-modules-dx010.init | 11 +-
.../dx010/modules/Makefile | 7 +-
.../dx010/modules/lm75.c | 557 ------------------
.../dx010/modules/lm75.h | 49 --
5 files changed, 19 insertions(+), 632 deletions(-)
delete mode 100644 platform/broadcom/sonic-platform-modules-cel/dx010/modules/lm75.c
delete mode 100644 platform/broadcom/sonic-platform-modules-cel/dx010/modules/lm75.h
diff --git a/device/celestica/x86_64-cel_seastone-r0/sensors.conf b/device/celestica/x86_64-cel_seastone-r0/sensors.conf
index 6ce4540b226e..307587f687e5 100644
--- a/device/celestica/x86_64-cel_seastone-r0/sensors.conf
+++ b/device/celestica/x86_64-cel_seastone-r0/sensors.conf
@@ -36,33 +36,30 @@ chip "dps460-i2c-*-5b"
set in3_crit 13.0
set in3_lcrit 11.0
-# These sensors located on CPU Board.
-chip "dx010_lm75b-i2c-*-48"
- label temp1 "CPU_external temp sensor"
+# These sensors located on Main Switch Board.
+chip "lm75b-i2c-*-48"
+ label temp1 "Front-panel temp sensor 1"
set temp1_max 43
set temp1_max_hyst 28
-chip "dx010_lm75b-i2c-*-4e"
- label temp1 "Rear_panel temp sensor"
+chip "lm75b-i2c-*-49"
+ label temp1 "Front-panel temp sensor 2"
set temp1_max 43
set temp1_max_hyst 28
-# These sensors located on Main Switch Board.
-bus "i2c-5" "i2c-1-mux (chan_id 3)"
-chip "dx010_lm75b-i2c-5-48"
- label temp1 "Front_panel left temp sensor"
+chip "lm75b-i2c-*-4a"
+ label temp1 "ASIC temp sensor"
set temp1_max 43
set temp1_max_hyst 28
-bus "i2c-6" "i2c-1-mux (chan_id 4)"
-chip "dx010_lm75b-i2c-6-49"
- label temp1 "Front_panel right temp sensor"
+# These sensors located on CPU Board.
+chip "lm75b-i2c-*-48"
+ label temp1 "Rear-panel temp sensor 1"
set temp1_max 43
set temp1_max_hyst 28
-bus "i2c-7" "i2c-1-mux (chan_id 5)"
-chip "dx010_lm75b-i2c-7-4a"
- label temp1 "Switch_external temp sensor"
+chip "lm75b-i2c-*-4e"
+ label temp1 "Rear-panel temp sensor 2"
set temp1_max 43
set temp1_max_hyst 28
diff --git a/platform/broadcom/sonic-platform-modules-cel/debian/platform-modules-dx010.init b/platform/broadcom/sonic-platform-modules-cel/debian/platform-modules-dx010.init
index 0c883cd388ae..c51aa742076b 100644
--- a/platform/broadcom/sonic-platform-modules-cel/debian/platform-modules-dx010.init
+++ b/platform/broadcom/sonic-platform-modules-cel/debian/platform-modules-dx010.init
@@ -20,6 +20,7 @@ start)
modprobe i2c-mux-pca954x
modprobe dx010_wdt
modprobe leds-dx010
+ modprobe lm75
found=0
for devnum in 0 1; do
@@ -56,11 +57,11 @@ start)
echo 24lc64t 0x50 > /sys/bus/i2c/devices/i2c-12/new_device
# Attach temperature sensors
- echo dx010_lm75b 0x48 > /sys/bus/i2c/devices/i2c-5/new_device
- echo dx010_lm75b 0x49 > /sys/bus/i2c/devices/i2c-6/new_device
- echo dx010_lm75b 0x4a > /sys/bus/i2c/devices/i2c-7/new_device
- echo dx010_lm75b 0x48 > /sys/bus/i2c/devices/i2c-14/new_device
- echo dx010_lm75b 0x4e > /sys/bus/i2c/devices/i2c-15/new_device
+ echo lm75b 0x48 > /sys/bus/i2c/devices/i2c-5/new_device
+ echo lm75b 0x49 > /sys/bus/i2c/devices/i2c-6/new_device
+ echo lm75b 0x4a > /sys/bus/i2c/devices/i2c-7/new_device
+ echo lm75b 0x48 > /sys/bus/i2c/devices/i2c-14/new_device
+ echo lm75b 0x4e > /sys/bus/i2c/devices/i2c-15/new_device
# Attach fans
echo emc2305 0x2e > /sys/bus/i2c/devices/i2c-13/new_device
diff --git a/platform/broadcom/sonic-platform-modules-cel/dx010/modules/Makefile b/platform/broadcom/sonic-platform-modules-cel/dx010/modules/Makefile
index bb398cc5a745..9b0f10604811 100644
--- a/platform/broadcom/sonic-platform-modules-cel/dx010/modules/Makefile
+++ b/platform/broadcom/sonic-platform-modules-cel/dx010/modules/Makefile
@@ -1,6 +1 @@
-obj-m := dx010_cpld.o mc24lc64t.o emc2305.o dx010_wdt.o leds-dx010.o lm75.o
-KVERSION = $(shell uname -r)
-all:
- make -C /lib/modules/$(KVERSION)/build M=$(PWD) modules
-clean:
- make -C /lib/modules/$(KVERSION)/build M=$(PWD) clean
+obj-m := dx010_cpld.o mc24lc64t.o emc2305.o dx010_wdt.o leds-dx010.o
\ No newline at end of file
diff --git a/platform/broadcom/sonic-platform-modules-cel/dx010/modules/lm75.c b/platform/broadcom/sonic-platform-modules-cel/dx010/modules/lm75.c
deleted file mode 100644
index 140d8f365598..000000000000
--- a/platform/broadcom/sonic-platform-modules-cel/dx010/modules/lm75.c
+++ /dev/null
@@ -1,557 +0,0 @@
-/*
- * lm75.c - Part of lm_sensors, Linux kernel modules for hardware
- * monitoring
- * Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/jiffies.h>
-#include <linux/i2c.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/err.h>
-#include <linux/mutex.h>
-#include <linux/of.h>
-#include <linux/thermal.h>
-#include "lm75.h"
-
-
-/*
- * This driver handles the LM75 and compatible digital temperature sensors.
- */
-
-enum lm75_type { /* keep sorted in alphabetical order */
-adt75,
-ds1775,
-ds75,
-ds7505,
-g751,
-lm75,
-lm75a,
-lm75b,
-max6625,
-max6626,
-mcp980x,
-stds75,
-tcn75,
-tmp100,
-tmp101,
-tmp105,
-tmp112,
-tmp175,
-tmp275,
-tmp75,
-};
-
-/* Addresses scanned */
-static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, 0x4c,
- 0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
-
-
-/* The LM75 registers */
-#define LM75_REG_CONF 0x01
- static const u8 LM75_REG_TEMP[3] = {
- 0x00, /* input */
- 0x03, /* max */
- 0x02, /* hyst */
- };
-
-/* Each client has this additional data */
- struct lm75_data {
- struct i2c_client *client;
- struct device *hwmon_dev;
- struct thermal_zone_device *tz;
- struct mutex update_lock;
- u8 orig_conf;
- u8 resolution; /* In bits, between 9 and 12 */
- u8 resolution_limits;
- char valid; /* !=0 if registers are valid */
- unsigned long last_updated; /* In jiffies */
- unsigned long sample_time; /* In jiffies */
- s16 temp[3]; /* Register values,
- 0 = input
- 1 = max
- 2 = hyst */
- };
-
- static int lm75_read_value(struct i2c_client *client, u8 reg);
- static int lm75_write_value(struct i2c_client *client, u8 reg, u16 value);
- static struct lm75_data *lm75_update_device(struct device *dev);
-
-
-/*-----------------------------------------------------------------------*/
-
- static inline long lm75_reg_to_mc(s16 temp, u8 resolution)
- {
- return ((temp >> (16 - resolution)) * 1000) >> (resolution - 8);
- }
-
-/* sysfs attributes for hwmon */
-
- static int lm75_read_temp(void *dev, int *temp)
- {
- struct lm75_data *data = lm75_update_device(dev);
-
- if (IS_ERR(data))
- return PTR_ERR(data);
-
- *temp = lm75_reg_to_mc(data->temp[0], data->resolution);
-
- return 0;
- }
-
- static ssize_t show_temp(struct device *dev, struct device_attribute *da,
- char *buf)
- {
- struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
- struct lm75_data *data = lm75_update_device(dev);
-
- if (IS_ERR(data))
- return PTR_ERR(data);
-
- return sprintf(buf, "%ld\n", lm75_reg_to_mc(data->temp[attr->index],
- data->resolution));
- }
-
- static ssize_t set_temp(struct device *dev, struct device_attribute *da,
- const char *buf, size_t count)
- {
- struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
- struct lm75_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
- int nr = attr->index;
- long temp;
- int error;
- u8 resolution;
-
- error = kstrtol(buf, 10, &temp);
- if (error)
- return error;
-
- /*
- * Resolution of limit registers is assumed to be the same as the
- * temperature input register resolution unless given explicitly.
- */
- if (attr->index && data->resolution_limits)
- resolution = data->resolution_limits;
- else
- resolution = data->resolution;
-
- mutex_lock(&data->update_lock);
- temp = clamp_val(temp, LM75_TEMP_MIN, LM75_TEMP_MAX);
- data->temp[nr] = DIV_ROUND_CLOSEST(temp << (resolution - 8),
- 1000) << (16 - resolution);
- lm75_write_value(client, LM75_REG_TEMP[nr], data->temp[nr]);
- mutex_unlock(&data->update_lock);
- return count;
- }
-
- static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
- show_temp, set_temp, 1);
- static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
- show_temp, set_temp, 2);
- static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
-
- static struct attribute *lm75_attrs[] = {
- &sensor_dev_attr_temp1_input.dev_attr.attr,
- &sensor_dev_attr_temp1_max.dev_attr.attr,
- &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
-
- NULL
- };
- ATTRIBUTE_GROUPS(lm75);
-
-/*-----------------------------------------------------------------------*/
-
- static const struct thermal_zone_of_device_ops lm75_of_thermal_ops = {
- .get_temp = lm75_read_temp,
- };
-
-/* device probe and removal */
-
- static int
- lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
- {
- struct device *dev = &client->dev;
- struct lm75_data *data;
- int status;
- u8 set_mask, clr_mask;
- int new;
- enum lm75_type kind = id->driver_data;
-
- if (!i2c_check_functionality(client->adapter,
- I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
- return -EIO;
-
- data = devm_kzalloc(dev, sizeof(struct lm75_data), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- data->client = client;
- i2c_set_clientdata(client, data);
- mutex_init(&data->update_lock);
-
- /* Set to LM75 resolution (9 bits, 1/2 degree C) and range.
- * Then tweak to be more precise when appropriate.
- */
- set_mask = 0;
- clr_mask = LM75_SHUTDOWN; /* continuous conversions */
-
- switch (kind) {
- case adt75:
- clr_mask |= 1 << 5; /* not one-shot mode */
- data->resolution = 12;
- data->sample_time = HZ / 8;
- break;
- case ds1775:
- case ds75:
- case stds75:
- clr_mask |= 3 << 5;
- set_mask |= 2 << 5; /* 11-bit mode */
- data->resolution = 11;
- data->sample_time = HZ;
- break;
- case ds7505:
- set_mask |= 3 << 5; /* 12-bit mode */
- data->resolution = 12;
- data->sample_time = HZ / 4;
- break;
- case g751:
- case lm75:
- case lm75a:
- data->resolution = 9;
- data->sample_time = HZ / 2;
- break;
- case lm75b:
- data->resolution = 11;
- data->sample_time = HZ / 4;
- break;
- case max6625:
- data->resolution = 9;
- data->sample_time = HZ / 4;
- break;
- case max6626:
- data->resolution = 12;
- data->resolution_limits = 9;
- data->sample_time = HZ / 4;
- break;
- case tcn75:
- data->resolution = 9;
- data->sample_time = HZ / 8;
- break;
- case mcp980x:
- data->resolution_limits = 9;
- /* fall through */
- case tmp100:
- case tmp101:
- set_mask |= 3 << 5; /* 12-bit mode */
- data->resolution = 12;
- data->sample_time = HZ;
- clr_mask |= 1 << 7; /* not one-shot mode */
- break;
- case tmp112:
- set_mask |= 3 << 5; /* 12-bit mode */
- clr_mask |= 1 << 7; /* not one-shot mode */
- data->resolution = 12;
- data->sample_time = HZ / 4;
- break;
- case tmp105:
- case tmp175:
- case tmp275:
- case tmp75:
- set_mask |= 3 << 5; /* 12-bit mode */
- clr_mask |= 1 << 7; /* not one-shot mode */
- data->resolution = 12;
- data->sample_time = HZ / 2;
- break;
- }
-
- /* configure as specified */
- status = lm75_read_value(client, LM75_REG_CONF);
- if (status < 0) {
- dev_dbg(dev, "Can't read config? %d\n", status);
- return status;
- }
- data->orig_conf = status;
- new = status & ~clr_mask;
- new |= set_mask;
- if (status != new)
- lm75_write_value(client, LM75_REG_CONF, new);
- dev_dbg(dev, "Config %02x\n", new);
-
- data->hwmon_dev = hwmon_device_register_with_groups(dev, client->name,
- data, lm75_groups);
- if (IS_ERR(data->hwmon_dev))
- return PTR_ERR(data->hwmon_dev);
-
- data->tz = thermal_zone_of_sensor_register(data->hwmon_dev,
- 0,
- data->hwmon_dev,
- &lm75_of_thermal_ops);
- if (IS_ERR(data->tz))
- data->tz = NULL;
-
- dev_info(dev, "%s: sensor '%s'\n",
- dev_name(data->hwmon_dev), client->name);
-
- return 0;
- }
-
- static int lm75_remove(struct i2c_client *client)
- {
- struct lm75_data *data = i2c_get_clientdata(client);
-
- thermal_zone_of_sensor_unregister(data->hwmon_dev, data->tz);
- hwmon_device_unregister(data->hwmon_dev);
- lm75_write_value(client, LM75_REG_CONF, data->orig_conf);
- return 0;
- }
-
- static const struct i2c_device_id lm75_ids[] = {
- { "adt75", adt75, },
- { "ds1775", ds1775, },
- { "ds75", ds75, },
- { "ds7505", ds7505, },
- { "g751", g751, },
- { "lm75", lm75, },
- { "lm75a", lm75a, },
- { "dx010_lm75b", lm75b, },
- { "max6625", max6625, },
- { "max6626", max6626, },
- { "mcp980x", mcp980x, },
- { "stds75", stds75, },
- { "tcn75", tcn75, },
- { "tmp100", tmp100, },
- { "tmp101", tmp101, },
- { "tmp105", tmp105, },
- { "tmp112", tmp112, },
- { "tmp175", tmp175, },
- { "tmp275", tmp275, },
- { "tmp75", tmp75, },
- { /* LIST END */ }
- };
- MODULE_DEVICE_TABLE(i2c, lm75_ids);
-
-#define LM75A_ID 0xA1
-
-/* Return 0 if detection is successful, -ENODEV otherwise */
- static int lm75_detect(struct i2c_client *new_client,
- struct i2c_board_info *info)
- {
- struct i2c_adapter *adapter = new_client->adapter;
- int i;
- int conf, hyst, os;
- bool is_lm75a = 0;
-
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
- I2C_FUNC_SMBUS_WORD_DATA))
- return -ENODEV;
-
- /*
- * Now, we do the remaining detection. There is no identification-
- * dedicated register so we have to rely on several tricks:
- * unused bits, registers cycling over 8-address boundaries,
- * addresses 0x04-0x07 returning the last read value.
- * The cycling+unused addresses combination is not tested,
- * since it would significantly slow the detection down and would
- * hardly add any value.
- *
- * The National Semiconductor LM75A is different than earlier
- * LM75s. It has an ID byte of 0xaX (where X is the chip
- * revision, with 1 being the only revision in existence) in
- * register 7, and unused registers return 0xff rather than the
- * last read value.
- *
- * Note that this function only detects the original National
- * Semiconductor LM75 and the LM75A. Clones from other vendors
- * aren't detected, on purpose, because they are typically never
- * found on PC hardware. They are found on embedded designs where
- * they can be instantiated explicitly so detection is not needed.
- * The absence of identification registers on all these clones
- * would make their exhaustive detection very difficult and weak,
- * and odds are that the driver would bind to unsupported devices.
- */
-
- /* Unused bits */
- conf = i2c_smbus_read_byte_data(new_client, 1);
- if (conf & 0xe0)
- return -ENODEV;
-
- /* First check for LM75A */
- if (i2c_smbus_read_byte_data(new_client, 7) == LM75A_ID) {
- /* LM75A returns 0xff on unused registers so
- just to be sure we check for that too. */
- if (i2c_smbus_read_byte_data(new_client, 4) != 0xff
- || i2c_smbus_read_byte_data(new_client, 5) != 0xff
- || i2c_smbus_read_byte_data(new_client, 6) != 0xff)
- return -ENODEV;
- is_lm75a = 1;
- hyst = i2c_smbus_read_byte_data(new_client, 2);
- os = i2c_smbus_read_byte_data(new_client, 3);
- } else { /* Traditional style LM75 detection */
- /* Unused addresses */
- hyst = i2c_smbus_read_byte_data(new_client, 2);
- if (i2c_smbus_read_byte_data(new_client, 4) != hyst
- || i2c_smbus_read_byte_data(new_client, 5) != hyst
- || i2c_smbus_read_byte_data(new_client, 6) != hyst
- || i2c_smbus_read_byte_data(new_client, 7) != hyst)
- return -ENODEV;
- os = i2c_smbus_read_byte_data(new_client, 3);
- if (i2c_smbus_read_byte_data(new_client, 4) != os
- || i2c_smbus_read_byte_data(new_client, 5) != os
- || i2c_smbus_read_byte_data(new_client, 6) != os
- || i2c_smbus_read_byte_data(new_client, 7) != os)
- return -ENODEV;
- }
-
- /* Addresses cycling */
- for (i = 8; i <= 248; i += 40) {
- if (i2c_smbus_read_byte_data(new_client, i + 1) != conf
- || i2c_smbus_read_byte_data(new_client, i + 2) != hyst
- || i2c_smbus_read_byte_data(new_client, i + 3) != os)
- return -ENODEV;
- if (is_lm75a && i2c_smbus_read_byte_data(new_client, i + 7)
- != LM75A_ID)
- return -ENODEV;
- }
-
- strlcpy(info->type, is_lm75a ? "lm75a" : "lm75", I2C_NAME_SIZE);
-
- return 0;
- }
-
-#ifdef CONFIG_PM
- static int lm75_suspend(struct device *dev)
- {
- int status;
- struct i2c_client *client = to_i2c_client(dev);
- status = lm75_read_value(client, LM75_REG_CONF);
- if (status < 0) {
- dev_dbg(&client->dev, "Can't read config? %d\n", status);
- return status;
- }
- status = status | LM75_SHUTDOWN;
- lm75_write_value(client, LM75_REG_CONF, status);
- return 0;
- }
-
- static int lm75_resume(struct device *dev)
- {
- int status;
- struct i2c_client *client = to_i2c_client(dev);
- status = lm75_read_value(client, LM75_REG_CONF);
- if (status < 0) {
- dev_dbg(&client->dev, "Can't read config? %d\n", status);
- return status;
- }
- status = status & ~LM75_SHUTDOWN;
- lm75_write_value(client, LM75_REG_CONF, status);
- return 0;
- }
-
- static const struct dev_pm_ops lm75_dev_pm_ops = {
- .suspend = lm75_suspend,
- .resume = lm75_resume,
- };
-#define LM75_DEV_PM_OPS (&lm75_dev_pm_ops)
-#else
-#define LM75_DEV_PM_OPS NULL
-#endif /* CONFIG_PM */
-
- static struct i2c_driver lm75_driver = {
- .class = I2C_CLASS_HWMON,
- .driver = {
- .name = "dx010_lm75",
- .pm = LM75_DEV_PM_OPS,
- },
- .probe = lm75_probe,
- .remove = lm75_remove,
- .id_table = lm75_ids,
-/*
- .detect = lm75_detect,
- .address_list = normal_i2c,
-*/
- };
-
-/*-----------------------------------------------------------------------*/
-
-/* register access */
-
-/*
- * All registers are word-sized, except for the configuration register.
- * LM75 uses a high-byte first convention, which is exactly opposite to
- * the SMBus standard.
- */
- static int lm75_read_value(struct i2c_client *client, u8 reg)
- {
- if (reg == LM75_REG_CONF)
- return i2c_smbus_read_byte_data(client, reg);
- else
- return i2c_smbus_read_word_swapped(client, reg);
- }
-
- static int lm75_write_value(struct i2c_client *client, u8 reg, u16 value)
- {
- if (reg == LM75_REG_CONF)
- return i2c_smbus_write_byte_data(client, reg, value);
- else
- return i2c_smbus_write_word_swapped(client, reg, value);
- }
-
- static struct lm75_data *lm75_update_device(struct device *dev)
- {
- struct lm75_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
- struct lm75_data *ret = data;
-
- mutex_lock(&data->update_lock);
-
- if (time_after(jiffies, data->last_updated + data->sample_time)
- || !data->valid) {
- int i;
- dev_dbg(&client->dev, "Starting lm75 update\n");
-
- for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
- int status;
-
- status = lm75_read_value(client, LM75_REG_TEMP[i]);
- if (unlikely(status < 0)) {
- dev_dbg(dev,
- "LM75: Failed to read value: reg %d, error %d\n",
- LM75_REG_TEMP[i], status);
- ret = ERR_PTR(status);
- data->valid = 0;
- goto abort;
- }
- data->temp[i] = status;
- }
- data->last_updated = jiffies;
- data->valid = 1;
- }
-
- abort:
- mutex_unlock(&data->update_lock);
- return ret;
-}
-
-module_i2c_driver(lm75_driver);
-
-MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>");
-MODULE_DESCRIPTION("LM75 driver");
-MODULE_LICENSE("GPL");
diff --git a/platform/broadcom/sonic-platform-modules-cel/dx010/modules/lm75.h b/platform/broadcom/sonic-platform-modules-cel/dx010/modules/lm75.h
deleted file mode 100644
index c9097f9db7ab..000000000000
--- a/platform/broadcom/sonic-platform-modules-cel/dx010/modules/lm75.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- lm75.h - Part of lm_sensors, Linux kernel modules for hardware
- monitoring
- Copyright (c) 2003 Mark M. Hoffman <mhoffman@lightlink.com>
-
- 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.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/*
- This file contains common code for encoding/decoding LM75 type
- temperature readings, which are emulated by many of the chips
- we support. As the user is unlikely to load more than one driver
- which contains this code, we don't worry about the wasted space.
-*/
-
-#include <linux/kernel.h>
-
-/* straight from the datasheet */
-#define LM75_TEMP_MIN (-55000)
-#define LM75_TEMP_MAX 125000
-#define LM75_SHUTDOWN 0x01
-
-/* TEMP: 0.001C/bit (-55C to +125C)
- REG: (0.5C/bit, two's complement) << 7 */
-static inline u16 LM75_TEMP_TO_REG(long temp)
-{
- int ntemp = clamp_val(temp, LM75_TEMP_MIN, LM75_TEMP_MAX);
- ntemp += (ntemp < 0 ? -250 : 250);
- return (u16)((ntemp / 500) << 7);
-}
-
-static inline int LM75_TEMP_FROM_REG(u16 reg)
-{
- /* use integer division instead of equivalent right shift to
- guarantee arithmetic shift and preserve the sign */
- return ((s16)reg / 128) * 500;
-}
\ No newline at end of file