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therm_pm72: Convert to a new-style i2c driver

Browse source 
The legacy i2c binding model is going away soon, so convert the
macintosh therm_pm72 driver to the new model or it will break.

This is really a quick and dirty conversion, that should do the trick
for now, but no doubt that something cleaner can be done if anyone is
interested.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Jean Delvare 2009-06-15 18:01:50 +02:00
parent a231591f04
commit 1b9f37d488
1 changed files with 47 additions and 48 deletions
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95
drivers/macintosh/therm_pm72.c
View file

@ -286,22 +286,6 @@ struct fcu_fan_table fcu_fans[] = {
},
};
/*
* i2c_driver structure to attach to the host i2c controller
*/
static int therm_pm72_attach(struct i2c_adapter *adapter);
static int therm_pm72_detach(struct i2c_adapter *adapter);
static struct i2c_driver therm_pm72_driver =
{
.driver = {
.name = "therm_pm72",
},
.attach_adapter = therm_pm72_attach,
.detach_adapter = therm_pm72_detach,
};
/*
* Utility function to create an i2c_client structure and
* attach it to one of u3 adapters
@ -310,6 +294,7 @@ static struct i2c_client *attach_i2c_chip(int id, const char *name)
{
struct i2c_client *clt;
struct i2c_adapter *adap;
struct i2c_board_info info;
if (id & 0x200)
adap = k2;
@ -320,31 +305,21 @@ static struct i2c_client *attach_i2c_chip(int id, const char *name)
if (adap == NULL)
return NULL;
clt = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (clt == NULL)
return NULL;
clt->addr = (id >> 1) & 0x7f;
clt->adapter = adap;
clt->driver = &therm_pm72_driver;
strncpy(clt->name, name, I2C_NAME_SIZE-1);
if (i2c_attach_client(clt)) {
memset(&info, 0, sizeof(struct i2c_board_info));
info.addr = (id >> 1) & 0x7f;
strlcpy(info.type, "therm_pm72", I2C_NAME_SIZE);
clt = i2c_new_device(adap, &info);
if (!clt) {
printk(KERN_ERR "therm_pm72: Failed to attach to i2c ID 0x%x\n", id);
kfree(clt);
return NULL;
}
return clt;
}
/*
* Utility function to get rid of the i2c_client structure
* (will also detach from the adapter hopepfully)
*/
static void detach_i2c_chip(struct i2c_client *clt)
{
i2c_detach_client(clt);
kfree(clt);
/*
* Let i2c-core delete that device on driver removal.
* This is safe because i2c-core holds the core_lock mutex for us.
*/
list_add_tail(&clt->detected, &clt->driver->clients);
return clt;
}
/*
@ -1203,8 +1178,6 @@ static int init_cpu_state(struct cpu_pid_state *state, int index)
return 0;
fail:
if (state->monitor)
detach_i2c_chip(state->monitor);
state->monitor = NULL;
return -ENODEV;
@ -1232,7 +1205,6 @@ static void dispose_cpu_state(struct cpu_pid_state *state)
device_remove_file(&of_dev->dev, &dev_attr_cpu1_intake_fan_rpm);
}
detach_i2c_chip(state->monitor);
state->monitor = NULL;
}
@ -1407,7 +1379,6 @@ static void dispose_backside_state(struct backside_pid_state *state)
device_remove_file(&of_dev->dev, &dev_attr_backside_temperature);
device_remove_file(&of_dev->dev, &dev_attr_backside_fan_pwm);
detach_i2c_chip(state->monitor);
state->monitor = NULL;
}
@ -1532,7 +1503,6 @@ static void dispose_drives_state(struct drives_pid_state *state)
device_remove_file(&of_dev->dev, &dev_attr_drives_temperature);
device_remove_file(&of_dev->dev, &dev_attr_drives_fan_rpm);
detach_i2c_chip(state->monitor);
state->monitor = NULL;
}
@ -1654,7 +1624,6 @@ static void dispose_dimms_state(struct dimm_pid_state *state)
device_remove_file(&of_dev->dev, &dev_attr_dimms_temperature);
detach_i2c_chip(state->monitor);
state->monitor = NULL;
}
@ -1779,7 +1748,6 @@ static void dispose_slots_state(struct slots_pid_state *state)
device_remove_file(&of_dev->dev, &dev_attr_slots_temperature);
device_remove_file(&of_dev->dev, &dev_attr_slots_fan_pwm);
detach_i2c_chip(state->monitor);
state->monitor = NULL;
}
@ -2008,8 +1976,6 @@ static int attach_fcu(void)
*/
static void detach_fcu(void)
{
if (fcu)
detach_i2c_chip(fcu);
fcu = NULL;
}
@ -2060,12 +2026,21 @@ static int therm_pm72_attach(struct i2c_adapter *adapter)
return 0;
}
static int therm_pm72_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
/* Always succeed, the real work was done in therm_pm72_attach() */
return 0;
}
/*
* Called on every adapter when the driver or the i2c controller
* Called when any of the devices which participates into thermal management
* is going away.
*/
static int therm_pm72_detach(struct i2c_adapter *adapter)
static int therm_pm72_remove(struct i2c_client *client)
{
struct i2c_adapter *adapter = client->adapter;
mutex_lock(&driver_lock);
if (state != state_detached)
@ -2096,6 +2071,30 @@ static int therm_pm72_detach(struct i2c_adapter *adapter)
return 0;
}
/*
* i2c_driver structure to attach to the host i2c controller
*/
static const struct i2c_device_id therm_pm72_id[] = {
/*
* Fake device name, thermal management is done by several
* chips but we don't need to differentiate between them at
* this point.
*/
{ "therm_pm72", 0 },
{ }
};
static struct i2c_driver therm_pm72_driver = {
.driver = {
.name = "therm_pm72",
},
.attach_adapter = therm_pm72_attach,
.probe = therm_pm72_probe,
.remove = therm_pm72_remove,
.id_table = therm_pm72_id,
};
static int fan_check_loc_match(const char *loc, int fan)
{
char tmp[64];