matthew/sonic-buildimage
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity
4e87caf6bb
sonic-buildimage/platform/broadcom/sonic-platform-modules-alphanetworks/snj60d0-320f/modules/yesm1300am.c
juntseng62 963217891e
[Alphanetworks] Add new platform SNJ60D0-320F (#8780) 
Why I did it
Added Support for Alphanetworks SNJ60D0-320F platform

How I did it
Implemented the support for Alphanetworks SNJ60D0-320F platform

Platform: x86_64-alphanetworks_snj60d0_320f-r0
HwSKU: Alphanetworks-SNJ60D0-320F
ASIC: broadcom
ASIC Count: 1

How to verify it
Verified the show command outputs
2021-10-22 12:37:39 -07:00

460 lines
15 KiB
C
Raw Blame History

/*
* An hwmon driver for the 3Y Power YESM1300AM Power Module
*
* Copyright (C) 2014 Accton Technology Corporation.
* Brandon Chuang <brandon_chuang@accton.com.tw>
*
* Based on ad7414.c
* Copyright 2006 Stefan Roese <sr at denx.de>, DENX Software Engineering
*
* 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/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/sysfs.h>
#include <linux/slab.h>
/* PMBus Protocol. */
#define PSU_REG_VOUT_MODE 0x20
#define PSU_REG_READ_VIN 0x88
#define PSU_REG_READ_IIN 0x89
#define PSU_REG_READ_VOUT 0x8B
#define PSU_REG_READ_IOUT 0x8C
#define PSU_REG_READ_TEMPERATURE_1 0x8D
#define PSU_REG_READ_FAN_SPEED_1 0x90
#define PSU_REG_READ_POUT 0x96
#define PSU_REG_READ_PIN 0x97
#define PSU_REG_MFR_ID 0x99
#define PSU_REG_MFR_MODEL 0x9A
#define PSU_REG_MFR_POUT_MAX 0xA7
/* Addresses scanned
*/
static const unsigned short normal_i2c[] = {0x58, 0x59, I2C_CLIENT_END};
/* Each client has this additional data
*/
struct yesm1300am_data
{
struct device *hwmon_dev;
struct mutex update_lock;
char valid; /* !=0 if registers are valid */
unsigned long last_updated; /* In jiffies */
u8 vout_mode; /* Register value */
u16 v_in; /* Register value */
u16 v_out; /* Register value */
u16 i_in; /* Register value */
u16 i_out; /* Register value */
u16 p_in; /* Register value */
u16 p_out; /* Register value */
u16 temp1_input; /* Register value */
u16 fan_speed; /* Register value */
u8 mfr_id[10]; /* Register value */
u8 mfr_model[12]; /* Register value */
u16 mfr_pout_max; /* Register value */
};
static ssize_t show_vout_by_mode(struct device *dev, struct device_attribute *da, char *buf);
static ssize_t show_linear(struct device *dev, struct device_attribute *da, char *buf);
static ssize_t show_ascii(struct device *dev, struct device_attribute *da, char *buf);
static struct yesm1300am_data *yesm1300am_update_device(struct device *dev);
enum yesm1300am_sysfs_attributes
{
PSU_V_IN,
PSU_V_OUT,
PSU_I_IN,
PSU_I_OUT,
PSU_P_IN,
PSU_P_OUT_UW,
PSU_P_OUT,
PSU_TEMP1_INPUT,
PSU_FAN1_SPEED,
PSU_MFR_ID,
PSU_MODEL_NAME,
PSU_MFR_POUT_MAX
};
/* sysfs attributes for hwmon
*/
static SENSOR_DEVICE_ATTR(psu_v_in, S_IRUGO, show_linear, NULL, PSU_V_IN);
static SENSOR_DEVICE_ATTR(psu_v_out, S_IRUGO, show_vout_by_mode, NULL, PSU_V_OUT);
static SENSOR_DEVICE_ATTR(psu_i_in, S_IRUGO, show_linear, NULL, PSU_I_IN);
static SENSOR_DEVICE_ATTR(psu_i_out, S_IRUGO, show_linear, NULL, PSU_I_OUT);
static SENSOR_DEVICE_ATTR(psu_p_in, S_IRUGO, show_linear, NULL, PSU_P_IN);
static SENSOR_DEVICE_ATTR(psu_p_out, S_IRUGO, show_linear, NULL, PSU_P_OUT);
static SENSOR_DEVICE_ATTR(psu_temp1_input, S_IRUGO, show_linear, NULL, PSU_TEMP1_INPUT);
static SENSOR_DEVICE_ATTR(psu_fan1_speed_rpm, S_IRUGO, show_linear, NULL, PSU_FAN1_SPEED);
static SENSOR_DEVICE_ATTR(psu_mfr_id, S_IRUGO, show_ascii, NULL, PSU_MFR_ID);
static SENSOR_DEVICE_ATTR(psu_model_name, S_IRUGO, show_ascii, NULL, PSU_MODEL_NAME);
static SENSOR_DEVICE_ATTR(psu_mfr_pout_max, S_IRUGO, show_linear, NULL, PSU_MFR_POUT_MAX);
/*Duplicate nodes for lm-sensors.*/
static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_vout_by_mode, NULL, PSU_V_OUT);
static SENSOR_DEVICE_ATTR(curr2_input, S_IRUGO, show_linear, NULL, PSU_I_OUT);
static SENSOR_DEVICE_ATTR(power2_input, S_IRUGO, show_linear, NULL, PSU_P_OUT_UW);
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_linear, NULL, PSU_TEMP1_INPUT);
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_linear, NULL, PSU_FAN1_SPEED);
static struct attribute *yesm1300am_attributes[] = {
&sensor_dev_attr_psu_v_in.dev_attr.attr,
&sensor_dev_attr_psu_v_out.dev_attr.attr,
&sensor_dev_attr_psu_i_in.dev_attr.attr,
&sensor_dev_attr_psu_i_out.dev_attr.attr,
&sensor_dev_attr_psu_p_in.dev_attr.attr,
&sensor_dev_attr_psu_p_out.dev_attr.attr,
&sensor_dev_attr_psu_temp1_input.dev_attr.attr,
&sensor_dev_attr_psu_fan1_speed_rpm.dev_attr.attr,
&sensor_dev_attr_psu_mfr_id.dev_attr.attr,
&sensor_dev_attr_psu_model_name.dev_attr.attr,
&sensor_dev_attr_psu_mfr_pout_max.dev_attr.attr,
/*Duplicate nodes for lm-sensors.*/
&sensor_dev_attr_curr2_input.dev_attr.attr,
&sensor_dev_attr_in3_input.dev_attr.attr,
&sensor_dev_attr_power2_input.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_fan1_input.dev_attr.attr,
NULL};
static int two_complement_to_int(u16 data, u8 valid_bit, int mask)
{
u16 valid_data = data & mask;
bool is_negative = valid_data >> (valid_bit - 1);
return is_negative ? (-(((~valid_data) & mask) + 1)) : valid_data;
}
static ssize_t show_linear(struct device *dev, struct device_attribute *da,
char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
struct yesm1300am_data *data = yesm1300am_update_device(dev);
u16 value = 0;
int exponent, mantissa;
int multiplier = 1000;
switch (attr->index)
{
case PSU_V_IN:
value = data->v_in;
break;
case PSU_I_IN:
value = data->i_in;
break;
case PSU_I_OUT:
value = data->i_out;
break;
case PSU_P_IN:
value = data->p_in;
break;
case PSU_P_OUT:
value = data->p_out;
break;
case PSU_P_OUT_UW:
value = data->p_out;
multiplier = 1000000;
break;
case PSU_TEMP1_INPUT:
value = data->temp1_input;
break;
case PSU_FAN1_SPEED:
value = data->fan_speed;
multiplier = 1;
break;
case PSU_MFR_POUT_MAX:
value = data->mfr_pout_max;
break;
}
exponent = two_complement_to_int(value >> 11, 5, 0x1f);
mantissa = two_complement_to_int(value & 0x7ff, 11, 0x7ff);
return (exponent >= 0) ? sprintf(buf, "%d\n", (mantissa << exponent) * multiplier) : sprintf(buf, "%d\n", (mantissa * multiplier) / (1 << -exponent));
}
static ssize_t show_ascii(struct device *dev, struct device_attribute *da,
char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
struct yesm1300am_data *data = yesm1300am_update_device(dev);
u8 *ptr = NULL;
switch (attr->index)
{
case PSU_MFR_ID: /* psu_mfr_id */
ptr = data->mfr_id;
break;
case PSU_MODEL_NAME: /* psu_mfr_model */
ptr = data->mfr_model;
break;
default:
return 0;
}
return sprintf(buf, "%s\n", ptr);
}
static ssize_t show_vout_by_mode(struct device *dev, struct device_attribute *da,
char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
struct yesm1300am_data *data = yesm1300am_update_device(dev);
int exponent, mantissa;
int multiplier = 1000;
if (!data->valid)
{
return 0;
}
exponent = two_complement_to_int(data->vout_mode, 5, 0x1f);
switch (attr->index)
{
case PSU_V_OUT:
mantissa = data->v_out;
break;
default:
return 0;
}
return (exponent > 0) ? sprintf(buf, "%d\n", (mantissa << exponent) * multiplier) : sprintf(buf, "%d\n", (mantissa * multiplier) / (1 << -exponent));
}
static const struct attribute_group yesm1300am_group = {
.attrs = yesm1300am_attributes,
};
static int yesm1300am_probe(struct i2c_client *client,
const struct i2c_device_id *dev_id)
{
struct yesm1300am_data *data;
int status;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_SMBUS_WORD_DATA |
I2C_FUNC_SMBUS_I2C_BLOCK))
{
status = -EIO;
goto exit;
}
data = kzalloc(sizeof(struct yesm1300am_data), GFP_KERNEL);
if (!data)
{
status = -ENOMEM;
goto exit;
}
i2c_set_clientdata(client, data);
mutex_init(&data->update_lock);
dev_info(&client->dev, "chip found\n");
/* Register sysfs hooks */
status = sysfs_create_group(&client->dev.kobj, &yesm1300am_group);
if (status)
{
goto exit_free;
}
data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev))
{
status = PTR_ERR(data->hwmon_dev);
goto exit_remove;
}
dev_info(&client->dev, "%s: psu '%s'\n",
dev_name(data->hwmon_dev), client->name);
return 0;
exit_remove:
sysfs_remove_group(&client->dev.kobj, &yesm1300am_group);
exit_free:
kfree(data);
exit:
return status;
}
static int yesm1300am_remove(struct i2c_client *client)
{
struct yesm1300am_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &yesm1300am_group);
kfree(data);
return 0;
}
static const struct i2c_device_id yesm1300am_id[] = {
{"yesm1300am", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, yesm1300am_id);
static struct i2c_driver yesm1300am_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
.name = "yesm1300am",
},
.probe = yesm1300am_probe,
.remove = yesm1300am_remove,
.id_table = yesm1300am_id,
.address_list = normal_i2c,
};
static int yesm1300am_read_byte(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
}
static int yesm1300am_read_word(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_word_data(client, reg);
}
static int yesm1300am_read_block(struct i2c_client *client, u8 command, u8 *data,
int data_len)
{
int result = i2c_smbus_read_i2c_block_data(client, command, data_len, data);
if (unlikely(result < 0))
goto abort;
if (unlikely(result != data_len))
{
result = -EIO;
goto abort;
}
result = 0;
abort:
return result;
}
struct reg_data_byte
{
u8 reg;
u8 *value;
};
struct reg_data_word
{
u8 reg;
u16 *value;
};
static struct yesm1300am_data *yesm1300am_update_device(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct yesm1300am_data *data = i2c_get_clientdata(client);
mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || !data->valid)
{
int i, status;
u8 command;
struct reg_data_byte regs_byte[] = {{PSU_REG_VOUT_MODE, &data->vout_mode}};
struct reg_data_word regs_word[] = {{PSU_REG_READ_VIN, &data->v_in},
{PSU_REG_READ_VOUT, &data->v_out},
{PSU_REG_READ_IIN, &data->i_in},
{PSU_REG_READ_IOUT, &data->i_out},
{PSU_REG_READ_PIN, &data->p_in},
{PSU_REG_READ_POUT, &data->p_out},
{PSU_REG_READ_TEMPERATURE_1, &data->temp1_input},
{PSU_REG_READ_FAN_SPEED_1, &data->fan_speed},
{PSU_REG_MFR_POUT_MAX, &data->mfr_pout_max}};
dev_dbg(&client->dev, "Starting yesm1300am update\n");
/* Read byte data */
for (i = 0; i < ARRAY_SIZE(regs_byte); i++)
{
status = yesm1300am_read_byte(client, regs_byte[i].reg);
if (status < 0)
{
dev_dbg(&client->dev, "reg %d, err %d\n",
regs_byte[i].reg, status);
*(regs_byte[i].value) = 0;
}
else
{
*(regs_byte[i].value) = status;
}
}
/* Read word data */
for (i = 0; i < ARRAY_SIZE(regs_word); i++)
{
status = yesm1300am_read_word(client, regs_word[i].reg);
if (status < 0)
{
dev_dbg(&client->dev, "reg %d, err %d\n",
regs_word[i].reg, status);
*(regs_word[i].value) = 0;
}
else
{
*(regs_word[i].value) = status;
}
}
/* Read mfr_id */
command = PSU_REG_MFR_ID;
status = yesm1300am_read_block(client, command, data->mfr_id,
ARRAY_SIZE(data->mfr_id) - 1);
data->mfr_id[ARRAY_SIZE(data->mfr_id) - 1] = '\0';
strncpy(data->mfr_id, (u8 *)&data->mfr_id + 1, ARRAY_SIZE(data->mfr_id) - 1);
if (status < 0)
dev_dbg(&client->dev, "reg %d, err %d\n", command, status);
/* Read mfr_model */
command = PSU_REG_MFR_MODEL;
status = yesm1300am_read_block(client, command, data->mfr_model,
ARRAY_SIZE(data->mfr_model) - 1);
data->mfr_model[ARRAY_SIZE(data->mfr_model) - 1] = '\0';
strncpy(data->mfr_model, (u8 *)&data->mfr_model + 1, ARRAY_SIZE(data->mfr_model) - 1);
if (status < 0)
dev_dbg(&client->dev, "reg %d, err %d\n", command, status);
data->last_updated = jiffies;
data->valid = 1;
}
mutex_unlock(&data->update_lock);
return data;
}
module_i2c_driver(yesm1300am_driver);
MODULE_AUTHOR("Alpha-SID6");
MODULE_DESCRIPTION("3Y Power yesm1300am driver");
MODULE_LICENSE("GPL");
Reference in New Issue View Git Blame Copy Permalink