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提交 f641b588 编写于 作者: J Jean Delvare 提交者： Mark M. Hoffman
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hwmon/pc87360: Convert to a platform driver 

Convert the pc87360 driver from the nonsensical i2c-isa hack to a
regular platform driver. This is a direct conversion, other cleanups
could happen on top of that.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NJim Cromie <jim.cromie@gmail.com>
上级 b825037d
隐藏空白更改
内联 并排
Showing with 137 addition and 97 deletion
drivers/hwmon/Kconfig
浏览文件 @ f641b588
......@@ -405,8 +405,6 @@ config SENSORS_MAX6650
config SENSORS_PC87360
tristate "National Semiconductor PC87360 family"
depends on I2C && EXPERIMENTAL
select I2C_ISA
select HWMON_VID
help
If you say yes here you get access to the hardware monitoring
......
drivers/hwmon/pc87360.c
浏览文件 @ f641b588
/*
* pc87360.c - Part of lm_sensors, Linux kernel modules
* for hardware monitoring
* Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
* Copyright (C) 2004, 2007 Jean Delvare <khali@linux-fr.org>
*
* Copied from smsc47m1.c:
* Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
......@@ -37,8 +37,7 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-isa.h>
#include <linux/platform_device.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon-vid.h>
......@@ -47,12 +46,10 @@
#include <asm/io.h>
static u8 devid;
static unsigned short address;
static struct platform_device *pdev;
static unsigned short extra_isa[3];
static u8 confreg[4];
enum chips { any_chip, pc87360, pc87363, pc87364, pc87365, pc87366 };
static int init = 1;
module_param(init, int, 0);
MODULE_PARM_DESC(init,
......@@ -178,11 +175,11 @@ static inline u8 PWM_TO_REG(int val, int inv)
((val) + 500) / 1000)
/*
* Client data (each client gets its own)
* Device data
*/
struct pc87360_data {
struct i2c_client client;
const char *name;
struct class_device *class_dev;
struct mutex lock;
struct mutex update_lock;
......@@ -222,27 +219,28 @@ struct pc87360_data {
* Functions declaration
*/
static int pc87360_detect(struct i2c_adapter *adapter);
static int pc87360_detach_client(struct i2c_client *client);
static int pc87360_probe(struct platform_device *pdev);
static int pc87360_remove(struct platform_device *pdev);
static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
u8 reg);
static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
u8 reg, u8 value);
static void pc87360_init_client(struct i2c_client *client, int use_thermistors);
static void pc87360_init_device(struct platform_device *pdev,
int use_thermistors);
static struct pc87360_data *pc87360_update_device(struct device *dev);
/*
* Driver data (common to all clients)
* Driver data
*/
static struct i2c_driver pc87360_driver = {
static struct platform_driver pc87360_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "pc87360",
},
.attach_adapter = pc87360_detect,
.detach_client = pc87360_detach_client,
.probe = pc87360_probe,
.remove = __devexit_p(pc87360_remove),
};
/*
......@@ -281,8 +279,7 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *devattr,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
long fan_min = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
......@@ -347,8 +344,7 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr, con
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
......@@ -410,8 +406,7 @@ static ssize_t set_in_min(struct device *dev, struct device_attribute *devattr,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
......@@ -425,8 +420,7 @@ static ssize_t set_in_max(struct device *dev, struct device_attribute *devattr,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
......@@ -511,8 +505,7 @@ static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char
}
static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
data->vrm = simple_strtoul(buf, NULL, 10);
return count;
}
......@@ -584,8 +577,7 @@ static ssize_t set_therm_min(struct device *dev, struct device_attribute *devatt
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
......@@ -599,8 +591,7 @@ static ssize_t set_therm_max(struct device *dev, struct device_attribute *devatt
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
......@@ -614,8 +605,7 @@ static ssize_t set_therm_crit(struct device *dev, struct device_attribute *devat
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
......@@ -715,8 +705,7 @@ static ssize_t set_temp_min(struct device *dev, struct device_attribute *devattr
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
......@@ -730,8 +719,7 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *devattr
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
......@@ -745,8 +733,7 @@ static ssize_t set_temp_crit(struct device *dev, struct device_attribute *devatt
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
......@@ -818,6 +805,14 @@ static const struct attribute_group pc8736x_temp_group = {
.attrs = pc8736x_temp_attr_array,
};
static ssize_t show_name(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87360_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", data->name);
}
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
/*
* Device detection, registration and update
*/
......@@ -912,28 +907,18 @@ static int __init pc87360_find(int sioaddr, u8 *devid, unsigned short *addresses
return 0;
}
static int pc87360_detect(struct i2c_adapter *adapter)
static int __devinit pc87360_probe(struct platform_device *pdev)
{
int i;
struct i2c_client *client;
struct pc87360_data *data;
int err = 0;
const char *name = "pc87360";
int use_thermistors = 0;
struct device *dev;
struct device *dev = &pdev->dev;
if (!(data = kzalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
return -ENOMEM;
client = &data->client;
dev = &client->dev;
i2c_set_clientdata(client, data);
client->addr = address;
mutex_init(&data->lock);
client->adapter = adapter;
client->driver = &pc87360_driver;
client->flags = 0;
data->fannr = 2;
data->innr = 0;
data->tempnr = 0;
......@@ -960,15 +945,17 @@ static int pc87360_detect(struct i2c_adapter *adapter)
break;
}
strlcpy(client->name, name, sizeof(client->name));
data->name = name;
data->valid = 0;
mutex_init(&data->lock);
mutex_init(&data->update_lock);
platform_set_drvdata(pdev, data);
for (i = 0; i < 3; i++) {
if (((data->address[i] = extra_isa[i]))
&& !request_region(extra_isa[i], PC87360_EXTENT,
pc87360_driver.driver.name)) {
dev_err(&client->dev, "Region 0x%x-0x%x already "
dev_err(dev, "Region 0x%x-0x%x already "
"in use!\n", extra_isa[i],
extra_isa[i]+PC87360_EXTENT-1);
for (i--; i >= 0; i--)
......@@ -982,9 +969,6 @@ static int pc87360_detect(struct i2c_adapter *adapter)
if (data->fannr)
data->fan_conf = confreg[0] | (confreg[1] << 8);
if ((err = i2c_attach_client(client)))
goto ERROR2;
/* Use the correct reference voltage
Unless both the VLM and the TMS logical devices agree to
use an external Vref, the internal one is used. */
......@@ -996,7 +980,7 @@ static int pc87360_detect(struct i2c_adapter *adapter)
PC87365_REG_TEMP_CONFIG);
}
data->in_vref = (i&0x02) ? 3025 : 2966;
dev_dbg(&client->dev, "Using %s reference voltage\n",
dev_dbg(dev, "Using %s reference voltage\n",
(i&0x02) ? "external" : "internal");
data->vid_conf = confreg[3];
......@@ -1015,18 +999,18 @@ static int pc87360_detect(struct i2c_adapter *adapter)
if (devid == 0xe9 && data->address[1]) /* PC87366 */
use_thermistors = confreg[2] & 0x40;
pc87360_init_client(client, use_thermistors);
pc87360_init_device(pdev, use_thermistors);
}
/* Register all-or-nothing sysfs groups */
if (data->innr &&
(err = sysfs_create_group(&client->dev.kobj,
(err = sysfs_create_group(&dev->kobj,
&pc8736x_vin_group)))
goto ERROR3;
if (data->innr == 14 &&
(err = sysfs_create_group(&client->dev.kobj,
(err = sysfs_create_group(&dev->kobj,
&pc8736x_therm_group)))
goto ERROR3;
......@@ -1067,7 +1051,10 @@ static int pc87360_detect(struct i2c_adapter *adapter)
goto ERROR3;
}
data->class_dev = hwmon_device_register(&client->dev);
if ((err = device_create_file(dev, &dev_attr_name)))
goto ERROR3;
data->class_dev = hwmon_device_register(dev);
if (IS_ERR(data->class_dev)) {
err = PTR_ERR(data->class_dev);
goto ERROR3;
......@@ -1075,14 +1062,12 @@ static int pc87360_detect(struct i2c_adapter *adapter)
return 0;
ERROR3:
device_remove_file(dev, &dev_attr_name);
/* can still remove groups whose members were added individually */
sysfs_remove_group(&client->dev.kobj, &pc8736x_temp_group);
sysfs_remove_group(&client->dev.kobj, &pc8736x_fan_group);
sysfs_remove_group(&client->dev.kobj, &pc8736x_therm_group);
sysfs_remove_group(&client->dev.kobj, &pc8736x_vin_group);
i2c_detach_client(client);
ERROR2:
sysfs_remove_group(&dev->kobj, &pc8736x_temp_group);
sysfs_remove_group(&dev->kobj, &pc8736x_fan_group);
sysfs_remove_group(&dev->kobj, &pc8736x_therm_group);
sysfs_remove_group(&dev->kobj, &pc8736x_vin_group);
for (i = 0; i < 3; i++) {
if (data->address[i]) {
release_region(data->address[i], PC87360_EXTENT);
......@@ -1093,20 +1078,18 @@ static int pc87360_detect(struct i2c_adapter *adapter)
return err;
}
static int pc87360_detach_client(struct i2c_client *client)
static int __devexit pc87360_remove(struct platform_device *pdev)
{
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = platform_get_drvdata(pdev);
int i;
hwmon_device_unregister(data->class_dev);
sysfs_remove_group(&client->dev.kobj, &pc8736x_temp_group);
sysfs_remove_group(&client->dev.kobj, &pc8736x_fan_group);
sysfs_remove_group(&client->dev.kobj, &pc8736x_therm_group);
sysfs_remove_group(&client->dev.kobj, &pc8736x_vin_group);
if ((i = i2c_detach_client(client)))
return i;
device_remove_file(&pdev->dev, &dev_attr_name);
sysfs_remove_group(&pdev->dev.kobj, &pc8736x_temp_group);
sysfs_remove_group(&pdev->dev.kobj, &pc8736x_fan_group);
sysfs_remove_group(&pdev->dev.kobj, &pc8736x_therm_group);
sysfs_remove_group(&pdev->dev.kobj, &pc8736x_vin_group);
for (i = 0; i < 3; i++) {
if (data->address[i]) {
......@@ -1144,9 +1127,10 @@ static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
mutex_unlock(&(data->lock));
}
static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
static void pc87360_init_device(struct platform_device *pdev,
int use_thermistors)
{
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = platform_get_drvdata(pdev);
int i, nr;
const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
const u8 init_temp[3] = { 2, 2, 1 };
......@@ -1155,7 +1139,7 @@ static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
if (init >= 2 && data->innr) {
reg = pc87360_read_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONVRATE);
dev_info(&client->dev, "VLM conversion set to "
dev_info(&pdev->dev, "VLM conversion set to "
"1s period, 160us delay\n");
pc87360_write_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONVRATE,
......@@ -1169,7 +1153,7 @@ static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
reg = pc87360_read_value(data, LD_IN, i,
PC87365_REG_IN_STATUS);
if (!(reg & 0x01)) {
dev_dbg(&client->dev, "Forcibly "
dev_dbg(&pdev->dev, "Forcibly "
"enabling in%d\n", i);
pc87360_write_value(data, LD_IN, i,
PC87365_REG_IN_STATUS,
......@@ -1193,7 +1177,7 @@ static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
reg = pc87360_read_value(data, LD_TEMP, i,
PC87365_REG_TEMP_STATUS);
if (!(reg & 0x01)) {
dev_dbg(&client->dev, "Forcibly "
dev_dbg(&pdev->dev, "Forcibly "
"enabling temp%d\n", i+1);
pc87360_write_value(data, LD_TEMP, i,
PC87365_REG_TEMP_STATUS,
......@@ -1210,7 +1194,7 @@ static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
reg = pc87360_read_value(data, LD_TEMP,
(i-11)/2, PC87365_REG_TEMP_STATUS);
if (reg & 0x01) {
dev_dbg(&client->dev, "Skipping "
dev_dbg(&pdev->dev, "Skipping "
"temp%d, pin already in use "
"by temp%d\n", i-7, (i-11)/2);
continue;
......@@ -1220,7 +1204,7 @@ static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
reg = pc87360_read_value(data, LD_IN, i,
PC87365_REG_IN_STATUS);
if (!(reg & 0x01)) {
dev_dbg(&client->dev, "Forcibly "
dev_dbg(&pdev->dev, "Forcibly "
"enabling temp%d\n", i-7);
pc87360_write_value(data, LD_IN, i,
PC87365_REG_TEMP_STATUS,
......@@ -1234,7 +1218,7 @@ static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
reg = pc87360_read_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONFIG);
if (reg & 0x01) {
dev_dbg(&client->dev, "Forcibly "
dev_dbg(&pdev->dev, "Forcibly "
"enabling monitoring (VLM)\n");
pc87360_write_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONFIG,
......@@ -1246,7 +1230,7 @@ static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
PC87365_REG_TEMP_CONFIG);
if (reg & 0x01) {
dev_dbg(&client->dev, "Forcibly enabling "
dev_dbg(&pdev->dev, "Forcibly enabling "
"monitoring (TMS)\n");
pc87360_write_value(data, LD_TEMP, NO_BANK,
PC87365_REG_TEMP_CONFIG,
......@@ -1268,9 +1252,9 @@ static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
}
}
static void pc87360_autodiv(struct i2c_client *client, int nr)
static void pc87360_autodiv(struct device *dev, int nr)
{
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
u8 old_min = data->fan_min[nr];
/* Increase clock divider if needed and possible */
......@@ -1280,7 +1264,7 @@ static void pc87360_autodiv(struct i2c_client *client, int nr)
data->fan_status[nr] += 0x20;
data->fan_min[nr] >>= 1;
data->fan[nr] >>= 1;
dev_dbg(&client->dev, "Increasing "
dev_dbg(dev, "Increasing "
"clock divider to %d for fan %d\n",
FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
}
......@@ -1292,7 +1276,7 @@ static void pc87360_autodiv(struct i2c_client *client, int nr)
data->fan_status[nr] -= 0x20;
data->fan_min[nr] <<= 1;
data->fan[nr] <<= 1;
dev_dbg(&client->dev, "Decreasing "
dev_dbg(dev, "Decreasing "
"clock divider to %d for fan %d\n",
FAN_DIV_FROM_REG(data->fan_status[nr]),
nr+1);
......@@ -1309,14 +1293,13 @@ static void pc87360_autodiv(struct i2c_client *client, int nr)
static struct pc87360_data *pc87360_update_device(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
struct pc87360_data *data = dev_get_drvdata(dev);
u8 i;
mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
dev_dbg(&client->dev, "Data update\n");
dev_dbg(dev, "Data update\n");
/* Fans */
for (i = 0; i < data->fannr; i++) {
......@@ -1330,7 +1313,7 @@ static struct pc87360_data *pc87360_update_device(struct device *dev)
LD_FAN, NO_BANK,
PC87360_REG_FAN_MIN(i));
/* Change clock divider if needed */
pc87360_autodiv(client, i);
pc87360_autodiv(dev, i);
/* Clear bits and write new divider */
pc87360_write_value(data, LD_FAN, NO_BANK,
PC87360_REG_FAN_STATUS(i),
......@@ -1418,9 +1401,53 @@ static struct pc87360_data *pc87360_update_device(struct device *dev)
return data;
}
static int __init pc87360_device_add(unsigned short address)
{
struct resource res = {
.name = "pc87360",
.flags = IORESOURCE_IO,
};
int err, i;
pdev = platform_device_alloc("pc87360", address);
if (!pdev) {
err = -ENOMEM;
printk(KERN_ERR "pc87360: Device allocation failed\n");
goto exit;
}
for (i = 0; i < 3; i++) {
if (!extra_isa[i])
continue;
res.start = extra_isa[i];
res.end = extra_isa[i] + PC87360_EXTENT - 1;
err = platform_device_add_resources(pdev, &res, 1);
if (err) {
printk(KERN_ERR "pc87360: Device resource[%d] "
"addition failed (%d)\n", i, err);
goto exit_device_put;
}
}
err = platform_device_add(pdev);
if (err) {
printk(KERN_ERR "pc87360: Device addition failed (%d)\n",
err);
goto exit_device_put;
}
return 0;
exit_device_put:
platform_device_put(pdev);
exit:
return err;
}
static int __init pc87360_init(void)
{
int i;
int err, i;
unsigned short address = 0;
if (pc87360_find(0x2e, &devid, extra_isa)
&& pc87360_find(0x4e, &devid, extra_isa)) {
......@@ -1443,12 +1470,27 @@ static int __init pc87360_init(void)
return -ENODEV;
}
return i2c_isa_add_driver(&pc87360_driver);
err = platform_driver_register(&pc87360_driver);
if (err)
goto exit;
/* Sets global pdev as a side effect */
err = pc87360_device_add(address);
if (err)
goto exit_driver;
return 0;
exit_driver:
platform_driver_unregister(&pc87360_driver);
exit:
return err;
}
static void __exit pc87360_exit(void)
{
i2c_isa_del_driver(&pc87360_driver);
platform_device_unregister(pdev);
platform_driver_unregister(&pc87360_driver);
}
......
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