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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 11:29:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 11:29:17 -0700
commit4858704da75ba84ce21e6d4b3b974e8b8594c9f2 (patch)
tree153f92e4ac0d5c90890ee1b14458ea56e22f984e /drivers/macintosh/therm_adt746x.c
parent86ade88e15b0852fa437e816037ecb266ae990ad (diff)
parent036533e232922ec6667817de9b037d0b1ebd062e (diff)
Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: therm_windtunnel: Convert to a new-style i2c driver therm_adt746x: Convert to a new-style i2c driver windfarm: Convert to new-style i2c drivers therm_pm72: Convert to a new-style i2c driver i2c-viapro: Add new PCI device ID for VX855 i2c/chips: Move max6875 to drivers/misc/eeprom i2c: Do not give adapters a default parent i2c: Do not probe for TV chips on Voodoo3 adapters i2c: Retry automatically on arbitration loss i2c: Remove void casts
Diffstat (limited to 'drivers/macintosh/therm_adt746x.c')
-rw-r--r--drivers/macintosh/therm_adt746x.c84
1 files changed, 42 insertions, 42 deletions
diff --git a/drivers/macintosh/therm_adt746x.c b/drivers/macintosh/therm_adt746x.c
index 0ddf9044948..fde377c60cc 100644
--- a/drivers/macintosh/therm_adt746x.c
+++ b/drivers/macintosh/therm_adt746x.c
@@ -72,7 +72,7 @@ MODULE_PARM_DESC(verbose,"Verbose log operations "
"(default 0)");
struct thermostat {
- struct i2c_client clt;
+ struct i2c_client *clt;
u8 temps[3];
u8 cached_temp[3];
u8 initial_limits[3];
@@ -87,9 +87,6 @@ static struct of_device * of_dev;
static struct thermostat* thermostat;
static struct task_struct *thread_therm = NULL;
-static int attach_one_thermostat(struct i2c_adapter *adapter, int addr,
- int busno);
-
static void write_both_fan_speed(struct thermostat *th, int speed);
static void write_fan_speed(struct thermostat *th, int speed, int fan);
@@ -101,7 +98,7 @@ write_reg(struct thermostat* th, int reg, u8 data)
tmp[0] = reg;
tmp[1] = data;
- rc = i2c_master_send(&th->clt, (const char *)tmp, 2);
+ rc = i2c_master_send(th->clt, (const char *)tmp, 2);
if (rc < 0)
return rc;
if (rc != 2)
@@ -116,12 +113,12 @@ read_reg(struct thermostat* th, int reg)
int rc;
reg_addr = (u8)reg;
- rc = i2c_master_send(&th->clt, &reg_addr, 1);
+ rc = i2c_master_send(th->clt, &reg_addr, 1);
if (rc < 0)
return rc;
if (rc != 1)
return -ENODEV;
- rc = i2c_master_recv(&th->clt, (char *)&data, 1);
+ rc = i2c_master_recv(th->clt, (char *)&data, 1);
if (rc < 0)
return rc;
return data;
@@ -131,26 +128,36 @@ static int
attach_thermostat(struct i2c_adapter *adapter)
{
unsigned long bus_no;
+ struct i2c_board_info info;
+ struct i2c_client *client;
if (strncmp(adapter->name, "uni-n", 5))
return -ENODEV;
bus_no = simple_strtoul(adapter->name + 6, NULL, 10);
if (bus_no != therm_bus)
return -ENODEV;
- return attach_one_thermostat(adapter, therm_address, bus_no);
+
+ memset(&info, 0, sizeof(struct i2c_board_info));
+ strlcpy(info.type, "therm_adt746x", I2C_NAME_SIZE);
+ info.addr = therm_address;
+ client = i2c_new_device(adapter, &info);
+ if (!client)
+ return -ENODEV;
+
+ /*
+ * 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(&client->detected, &client->driver->clients);
+ return 0;
}
static int
-detach_thermostat(struct i2c_adapter *adapter)
+remove_thermostat(struct i2c_client *client)
{
- struct thermostat* th;
+ struct thermostat *th = i2c_get_clientdata(client);
int i;
- if (thermostat == NULL)
- return 0;
-
- th = thermostat;
-
if (thread_therm != NULL) {
kthread_stop(thread_therm);
}
@@ -166,8 +173,6 @@ detach_thermostat(struct i2c_adapter *adapter)
write_both_fan_speed(th, -1);
- i2c_detach_client(&th->clt);
-
thermostat = NULL;
kfree(th);
@@ -175,14 +180,6 @@ detach_thermostat(struct i2c_adapter *adapter)
return 0;
}
-static struct i2c_driver thermostat_driver = {
- .driver = {
- .name = "therm_adt746x",
- },
- .attach_adapter = attach_thermostat,
- .detach_adapter = detach_thermostat,
-};
-
static int read_fan_speed(struct thermostat *th, u8 addr)
{
u8 tmp[2];
@@ -371,8 +368,8 @@ static void set_limit(struct thermostat *th, int i)
th->limits[i] = default_limits_local[i] + limit_adjust;
}
-static int attach_one_thermostat(struct i2c_adapter *adapter, int addr,
- int busno)
+static int probe_thermostat(struct i2c_client *client,
+ const struct i2c_device_id *id)
{
struct thermostat* th;
int rc;
@@ -385,16 +382,12 @@ static int attach_one_thermostat(struct i2c_adapter *adapter, int addr,
if (!th)
return -ENOMEM;
- th->clt.addr = addr;
- th->clt.adapter = adapter;
- th->clt.driver = &thermostat_driver;
- strcpy(th->clt.name, "thermostat");
+ i2c_set_clientdata(client, th);
+ th->clt = client;
rc = read_reg(th, 0);
if (rc < 0) {
- printk(KERN_ERR "adt746x: Thermostat failed to read config "
- "from bus %d !\n",
- busno);
+ dev_err(&client->dev, "Thermostat failed to read config!\n");
kfree(th);
return -ENODEV;
}
@@ -423,14 +416,6 @@ static int attach_one_thermostat(struct i2c_adapter *adapter, int addr,
thermostat = th;
- if (i2c_attach_client(&th->clt)) {
- printk(KERN_INFO "adt746x: Thermostat failed to attach "
- "client !\n");
- thermostat = NULL;
- kfree(th);
- return -ENODEV;
- }
-
/* be sure to really write fan speed the first time */
th->last_speed[0] = -2;
th->last_speed[1] = -2;
@@ -456,6 +441,21 @@ static int attach_one_thermostat(struct i2c_adapter *adapter, int addr,
return 0;
}
+static const struct i2c_device_id therm_adt746x_id[] = {
+ { "therm_adt746x", 0 },
+ { }
+};
+
+static struct i2c_driver thermostat_driver = {
+ .driver = {
+ .name = "therm_adt746x",
+ },
+ .attach_adapter = attach_thermostat,
+ .probe = probe_thermostat,
+ .remove = remove_thermostat,
+ .id_table = therm_adt746x_id,
+};
+
/*
* Now, unfortunately, sysfs doesn't give us a nice void * we could
* pass around to the attribute functions, so we don't really have