#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
-#include <linux/i2c-sensor.h>
+#include <linux/i2c-isa.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-vid.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
#include <asm/io.h>
/* Addresses to scan */
0x25, 0x26, 0x27, 0x28, 0x29,
0x2a, 0x2b, 0x2c, 0x2d, 0x2e,
0x2f, I2C_CLIENT_END };
-static unsigned int normal_isa[] = { 0x0290, I2C_CLIENT_ISA_END };
+static unsigned short isa_address = 0x290;
/* Insmod parameters */
-SENSORS_INSMOD_3(lm78, lm78j, lm79);
+I2C_CLIENT_INSMOD_2(lm78, lm79);
/* Many LM78 constants specified below */
return val * 1000;
}
-/* VID: mV
- REG: (see doc/vid) */
-static inline int VID_FROM_REG(u8 val)
-{
- return val==0x1f ? 0 : val>=0x10 ? 5100-val*100 : 2050-val*50;
-}
-
#define DIV_FROM_REG(val) (1 << (val))
/* There are some complications in a module like this. First off, LM78 chips
allocated. */
struct lm78_data {
struct i2c_client client;
- struct semaphore lock;
+ struct class_device *class_dev;
+ struct mutex lock;
enum chips type;
- struct semaphore update_lock;
+ struct mutex update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
static int lm78_attach_adapter(struct i2c_adapter *adapter);
+static int lm78_isa_attach_adapter(struct i2c_adapter *adapter);
static int lm78_detect(struct i2c_adapter *adapter, int address, int kind);
static int lm78_detach_client(struct i2c_client *client);
-static int lm78_read_value(struct i2c_client *client, u8 register);
-static int lm78_write_value(struct i2c_client *client, u8 register, u8 value);
+static int lm78_read_value(struct i2c_client *client, u8 reg);
+static int lm78_write_value(struct i2c_client *client, u8 reg, u8 value);
static struct lm78_data *lm78_update_device(struct device *dev);
static void lm78_init_client(struct i2c_client *client);
static struct i2c_driver lm78_driver = {
- .owner = THIS_MODULE,
- .name = "lm78",
+ .driver = {
+ .name = "lm78",
+ },
.id = I2C_DRIVERID_LM78,
- .flags = I2C_DF_NOTIFY,
.attach_adapter = lm78_attach_adapter,
.detach_client = lm78_detach_client,
};
+static struct i2c_driver lm78_isa_driver = {
+ .driver = {
+ .name = "lm78-isa",
+ },
+ .attach_adapter = lm78_isa_attach_adapter,
+ .detach_client = lm78_detach_client,
+};
+
+
/* 7 Voltages */
static ssize_t show_in(struct device *dev, char *buf, int nr)
{
struct lm78_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->in_min[nr] = IN_TO_REG(val);
lm78_write_value(client, LM78_REG_IN_MIN(nr), data->in_min[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
struct lm78_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->in_max[nr] = IN_TO_REG(val);
lm78_write_value(client, LM78_REG_IN_MAX(nr), data->in_max[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
struct lm78_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp_over = TEMP_TO_REG(val);
lm78_write_value(client, LM78_REG_TEMP_OVER, data->temp_over);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
struct lm78_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp_hyst = TEMP_TO_REG(val);
lm78_write_value(client, LM78_REG_TEMP_HYST, data->temp_hyst);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
struct lm78_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
lm78_write_value(client, LM78_REG_FAN_MIN(nr), data->fan_min[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
/* Note: we save and restore the fan minimum here, because its value is
determined in part by the fan divisor. This follows the principle of
- least suprise; the user doesn't expect the fan minimum to change just
+ least surprise; the user doesn't expect the fan minimum to change just
because the divisor changed. */
static ssize_t set_fan_div(struct device *dev, const char *buf,
size_t count, int nr)
unsigned long min;
u8 reg;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
min = FAN_FROM_REG(data->fan_min[nr],
DIV_FROM_REG(data->fan_div[nr]));
default:
dev_err(&client->dev, "fan_div value %ld not "
"supported. Choose one of 1, 2, 4 or 8!\n", val);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return -EINVAL;
}
data->fan_min[nr] =
FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
lm78_write_value(client, LM78_REG_FAN_MIN(nr), data->fan_min[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
{
struct lm78_data *data = lm78_update_device(dev);
- return sprintf(buf, "%d\n", VID_FROM_REG(data->vid));
+ return sprintf(buf, "%d\n", vid_from_reg(data->vid, 82));
}
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
{
if (!(adapter->class & I2C_CLASS_HWMON))
return 0;
- return i2c_detect(adapter, &addr_data, lm78_detect);
+ return i2c_probe(adapter, &addr_data, lm78_detect);
+}
+
+static int lm78_isa_attach_adapter(struct i2c_adapter *adapter)
+{
+ return lm78_detect(adapter, isa_address, -1);
}
-/* This function is called by i2c_detect */
-int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
+/* This function is called by i2c_probe */
+static int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
{
int i, err;
struct i2c_client *new_client;
/* Reserve the ISA region */
if (is_isa)
- if (!request_region(address, LM78_EXTENT, lm78_driver.name)) {
+ if (!request_region(address, LM78_EXTENT,
+ lm78_isa_driver.driver.name)) {
err = -EBUSY;
goto ERROR0;
}
client structure, even though we cannot fill it completely yet.
But it allows us to access lm78_{read,write}_value. */
- if (!(data = kmalloc(sizeof(struct lm78_data), GFP_KERNEL))) {
+ if (!(data = kzalloc(sizeof(struct lm78_data), GFP_KERNEL))) {
err = -ENOMEM;
goto ERROR1;
}
- memset(data, 0, sizeof(struct lm78_data));
new_client = &data->client;
if (is_isa)
- init_MUTEX(&data->lock);
+ mutex_init(&data->lock);
i2c_set_clientdata(new_client, data);
new_client->addr = address;
new_client->adapter = adapter;
- new_client->driver = &lm78_driver;
+ new_client->driver = is_isa ? &lm78_isa_driver : &lm78_driver;
new_client->flags = 0;
/* Now, we do the remaining detection. */
/* Determine the chip type. */
if (kind <= 0) {
i = lm78_read_value(new_client, LM78_REG_CHIPID);
- if (i == 0x00 || i == 0x20)
+ if (i == 0x00 || i == 0x20 /* LM78 */
+ || i == 0x40) /* LM78-J */
kind = lm78;
- else if (i == 0x40)
- kind = lm78j;
else if ((i & 0xfe) == 0xc0)
kind = lm79;
else {
if (kind == lm78) {
client_name = "lm78";
- } else if (kind == lm78j) {
- client_name = "lm78-j";
} else if (kind == lm79) {
client_name = "lm79";
}
data->type = kind;
data->valid = 0;
- init_MUTEX(&data->update_lock);
+ mutex_init(&data->update_lock);
/* Tell the I2C layer a new client has arrived */
if ((err = i2c_attach_client(new_client)))
}
/* Register sysfs hooks */
+ data->class_dev = hwmon_device_register(&new_client->dev);
+ if (IS_ERR(data->class_dev)) {
+ err = PTR_ERR(data->class_dev);
+ goto ERROR3;
+ }
+
device_create_file(&new_client->dev, &dev_attr_in0_input);
device_create_file(&new_client->dev, &dev_attr_in0_min);
device_create_file(&new_client->dev, &dev_attr_in0_max);
return 0;
+ERROR3:
+ i2c_detach_client(new_client);
ERROR2:
kfree(data);
ERROR1:
static int lm78_detach_client(struct i2c_client *client)
{
+ struct lm78_data *data = i2c_get_clientdata(client);
int err;
- if ((err = i2c_detach_client(client))) {
- dev_err(&client->dev,
- "Client deregistration failed, client not detached.\n");
+ hwmon_device_unregister(data->class_dev);
+
+ if ((err = i2c_detach_client(client)))
return err;
- }
if(i2c_is_isa_client(client))
release_region(client->addr, LM78_EXTENT);
- kfree(i2c_get_clientdata(client));
+ kfree(data);
return 0;
}
int res;
if (i2c_is_isa_client(client)) {
struct lm78_data *data = i2c_get_clientdata(client);
- down(&data->lock);
+ mutex_lock(&data->lock);
outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET);
res = inb_p(client->addr + LM78_DATA_REG_OFFSET);
- up(&data->lock);
+ mutex_unlock(&data->lock);
return res;
} else
return i2c_smbus_read_byte_data(client, reg);
{
if (i2c_is_isa_client(client)) {
struct lm78_data *data = i2c_get_clientdata(client);
- down(&data->lock);
+ mutex_lock(&data->lock);
outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET);
outb_p(value, client->addr + LM78_DATA_REG_OFFSET);
- up(&data->lock);
+ mutex_unlock(&data->lock);
return 0;
} else
return i2c_smbus_write_byte_data(client, reg, value);
}
-/* Called when we have found a new LM78. It should set limits, etc. */
static void lm78_init_client(struct i2c_client *client)
{
u8 config = lm78_read_value(client, LM78_REG_CONFIG);
struct lm78_data *data = i2c_get_clientdata(client);
int i;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|| !data->valid) {
data->fan_div[2] = 1;
}
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return data;
}
static int __init sm_lm78_init(void)
{
- return i2c_add_driver(&lm78_driver);
+ int res;
+
+ res = i2c_add_driver(&lm78_driver);
+ if (res)
+ return res;
+
+ res = i2c_isa_add_driver(&lm78_isa_driver);
+ if (res) {
+ i2c_del_driver(&lm78_driver);
+ return res;
+ }
+
+ return 0;
}
static void __exit sm_lm78_exit(void)
{
+ i2c_isa_del_driver(&lm78_isa_driver);
i2c_del_driver(&lm78_driver);
}
MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>");
-MODULE_DESCRIPTION("LM78, LM78-J and LM79 driver");
+MODULE_DESCRIPTION("LM78/LM79 driver");
MODULE_LICENSE("GPL");
module_init(sm_lm78_init);
git.openpandora.org / pandora-kernel.git / blobdiff