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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)
downloadlinux-4858704da75ba84ce21e6d4b3b974e8b8594c9f2.tar.gz
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 0ddf9044948a..fde377c60cca 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