Merge branch 'linus' into x86/urgent

Documentation/i2c/chips/max6875

@@ -49,7 +49,7 @@ $ modprobe max6875 force=0,0x50
 
 The MAX6874/MAX6875 ignores address bit 0, so this driver attaches to multiple
 addresses.  For example, for address 0x50, it also reserves 0x51.
-The even-address instance is called 'max6875', the odd one is 'max6875 subclient'.
+The even-address instance is called 'max6875', the odd one is 'dummy'.
 
 
 Programming the chip using i2c-dev

Documentation/i2c/chips/pca9539

@@ -7,7 +7,7 @@ drivers/gpio/pca9539.c instead.
 Supported chips:
   * Philips PCA9539
     Prefix: 'pca9539'
-    Addresses scanned: 0x74 - 0x77
+    Addresses scanned: none
     Datasheet:
         http://www.semiconductors.philips.com/acrobat/datasheets/PCA9539_2.pdf
 
@@ -23,6 +23,14 @@ The input sense can also be inverted.
 The 16 lines are split between two bytes.
 
 
+Detection
+---------
+
+The PCA9539 is difficult to detect and not commonly found in PC machines,
+so you have to pass the I2C bus and address of the installed PCA9539
+devices explicitly to the driver at load time via the force=... parameter.
+
+
 Sysfs entries
 -------------
 

Documentation/i2c/chips/pcf8574

@@ -4,13 +4,13 @@ Kernel driver pcf8574
 Supported chips:
   * Philips PCF8574
     Prefix: 'pcf8574'
-    Addresses scanned: I2C 0x20 - 0x27
+    Addresses scanned: none
     Datasheet: Publicly available at the Philips Semiconductors website
                http://www.semiconductors.philips.com/pip/PCF8574P.html
 
  * Philips PCF8574A
     Prefix: 'pcf8574a'
-    Addresses scanned: I2C 0x38 - 0x3f
+    Addresses scanned: none
     Datasheet: Publicly available at the Philips Semiconductors website
                http://www.semiconductors.philips.com/pip/PCF8574P.html
 
@@ -38,12 +38,10 @@ For more informations see the datasheet.
 Accessing PCF8574(A) via /sys interface
 -------------------------------------
 
-! Be careful !
 The PCF8574(A) is plainly impossible to detect ! Stupid chip.
-So every chip with address in the interval [20..27] and [38..3f] are
-detected as PCF8574(A). If you have other chips in this address
-range, the workaround is to load this module after the one
-for your others chips.
+So, you have to pass the I2C bus and address of the installed PCF857A
+and PCF8574A devices explicitly to the driver at load time via the
+force=... parameter.
 
 On detection (i.e. insmod, modprobe et al.), directories are being
 created for each detected PCF8574(A):

Documentation/i2c/chips/pcf8575

@@ -40,12 +40,9 @@ Detection
 ---------
 
 There is no method known to detect whether a chip on a given I2C address is
-a PCF8575 or whether it is any other I2C device. So there are two alternatives
-to let the driver find the installed PCF8575 devices:
-- Load this driver after any other I2C driver for I2C devices with addresses
-  in the range 0x20 .. 0x27.
-- Pass the I2C bus and address of the installed PCF8575 devices explicitly to
-  the driver at load time via the probe=... or force=... parameters.
+a PCF8575 or whether it is any other I2C device, so you have to pass the I2C
+bus and address of the installed PCF8575 devices explicitly to the driver at
+load time via the force=... parameter.
 
 /sys interface
 --------------

Makefile

@@ -508,6 +508,8 @@ else
 KBUILD_CFLAGS	+= -O2
 endif
 
+include $(srctree)/arch/$(SRCARCH)/Makefile
+
 ifneq (CONFIG_FRAME_WARN,0)
 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
 endif
@@ -516,8 +518,6 @@ endif
 # Arch Makefiles may override this setting
 KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
 
-include $(srctree)/arch/$(SRCARCH)/Makefile
-
 ifdef CONFIG_FRAME_POINTER
 KBUILD_CFLAGS	+= -fno-omit-frame-pointer -fno-optimize-sibling-calls
 else

arch/powerpc/platforms/82xx/ep8248e.c

@@ -59,6 +59,7 @@ static void __init ep8248e_pic_init(void)
 	of_node_put(np);
 }
 
+#ifdef CONFIG_FS_ENET_MDIO_FCC
 static void ep8248e_set_mdc(struct mdiobb_ctrl *ctrl, int level)
 {
 	if (level)
@@ -164,6 +165,7 @@ static struct of_platform_driver ep8248e_mdio_driver = {
 	.probe = ep8248e_mdio_probe,
 	.remove = ep8248e_mdio_remove,
 };
+#endif
 
 struct cpm_pin {
 	int port, pin, flags;
@@ -296,7 +298,9 @@ static  __initdata struct of_device_id of_bus_ids[] = {
 static int __init declare_of_platform_devices(void)
 {
 	of_platform_bus_probe(NULL, of_bus_ids, NULL);
+#ifdef CONFIG_FS_ENET_MDIO_FCC
 	of_register_platform_driver(&ep8248e_mdio_driver);
+#endif
 
 	return 0;
 }

drivers/hwmon/ad7418.c

@@ -23,12 +23,9 @@
 
 #include "lm75.h"
 
-#define DRV_VERSION "0.3"
+#define DRV_VERSION "0.4"
 
-/* Addresses to scan */
-static const unsigned short normal_i2c[] = { 0x28, I2C_CLIENT_END };
-/* Insmod parameters */
-I2C_CLIENT_INSMOD_3(ad7416, ad7417, ad7418);
+enum chips { ad7416, ad7417, ad7418 };
 
 /* AD7418 registers */
 #define AD7418_REG_TEMP_IN	0x00
@@ -46,7 +43,6 @@ static const u8 AD7418_REG_TEMP[] = { AD7418_REG_TEMP_IN,
 					AD7418_REG_TEMP_OS };
 
 struct ad7418_data {
-	struct i2c_client	client;
 	struct device		*hwmon_dev;
 	struct attribute_group	attrs;
 	enum chips		type;
@@ -58,16 +54,25 @@ struct ad7418_data {
 	u16			in[4];
 };
 
-static int ad7418_attach_adapter(struct i2c_adapter *adapter);
-static int ad7418_detect(struct i2c_adapter *adapter, int address, int kind);
-static int ad7418_detach_client(struct i2c_client *client);
+static int ad7418_probe(struct i2c_client *client,
+			const struct i2c_device_id *id);
+static int ad7418_remove(struct i2c_client *client);
+
+static const struct i2c_device_id ad7418_id[] = {
+	{ "ad7416", ad7416 },
+	{ "ad7417", ad7417 },
+	{ "ad7418", ad7418 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, ad7418_id);
 
 static struct i2c_driver ad7418_driver = {
 	.driver = {
 		.name	= "ad7418",
 	},
-	.attach_adapter	= ad7418_attach_adapter,
-	.detach_client	= ad7418_detach_client,
+	.probe		= ad7418_probe,
+	.remove		= ad7418_remove,
+	.id_table	= ad7418_id,
 };
 
 /* All registers are word-sized, except for the configuration registers.
@@ -192,13 +197,6 @@ static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_adc, NULL, 1);
 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_adc, NULL, 2);
 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_adc, NULL, 3);
 
-static int ad7418_attach_adapter(struct i2c_adapter *adapter)
-{
-	if (!(adapter->class & I2C_CLASS_HWMON))
-		return 0;
-	return i2c_probe(adapter, &addr_data, ad7418_detect);
-}
-
 static struct attribute *ad7416_attributes[] = {
 	&sensor_dev_attr_temp1_max.dev_attr.attr,
 	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
@@ -225,106 +223,54 @@ static struct attribute *ad7418_attributes[] = {
 	NULL
 };
 
-static int ad7418_detect(struct i2c_adapter *adapter, int address, int kind)
+static int ad7418_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
 {
-	struct i2c_client *client;
+	struct i2c_adapter *adapter = client->adapter;
 	struct ad7418_data *data;
-	int err = 0;
+	int err;
 
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
-					I2C_FUNC_SMBUS_WORD_DATA))
+					I2C_FUNC_SMBUS_WORD_DATA)) {
+		err = -EOPNOTSUPP;
 		goto exit;
+	}
 
 	if (!(data = kzalloc(sizeof(struct ad7418_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
 
-	client = &data->client;
-	client->addr = address;
-	client->adapter = adapter;
-	client->driver = &ad7418_driver;
-
 	i2c_set_clientdata(client, data);
 
 	mutex_init(&data->lock);
-
-	/* AD7418 has a curious behaviour on registers 6 and 7. They
-	 * both always read 0xC071 and are not documented on the datasheet.
-	 * We use them to detect the chip.
-	 */
-	if (kind <= 0) {
-		int reg, reg6, reg7;
-
-		/* the AD7416 lies within this address range, but I have
-		 * no means to check.
-		 */
-		if (address >= 0x48 && address <= 0x4f) {
-			/* XXX add tests for AD7416 here */
-			/* data->type = ad7416; */
-		}
-		/* here we might have AD7417 or AD7418 */
-		else if (address >= 0x28 && address <= 0x2f) {
-			reg6 = i2c_smbus_read_word_data(client, 0x06);
-			reg7 = i2c_smbus_read_word_data(client, 0x07);
-
-			if (address == 0x28 && reg6 == 0xC071 && reg7 == 0xC071)
-				data->type = ad7418;
-
-			/* XXX add tests for AD7417 here */
-
-
-			/* both AD7417 and AD7418 have bits 0-5 of
-			 * the CONF2 register at 0
-			 */
-			reg = i2c_smbus_read_byte_data(client,
-							AD7418_REG_CONF2);
-			if (reg & 0x3F)
-				data->type = any_chip; /* detection failed */
-		}
-	} else {
-		dev_dbg(&adapter->dev, "detection forced\n");
-	}
-
-	if (kind > 0)
-		data->type = kind;
-	else if (kind < 0 && data->type == any_chip) {
-		err = -ENODEV;
-		goto exit_free;
-	}
+	data->type = id->driver_data;
 
 	switch (data->type) {
-	case any_chip:
 	case ad7416:
 		data->adc_max = 0;
 		data->attrs.attrs = ad7416_attributes;
-		strlcpy(client->name, "ad7416", I2C_NAME_SIZE);
 		break;
 
 	case ad7417:
 		data->adc_max = 4;
 		data->attrs.attrs = ad7417_attributes;
-		strlcpy(client->name, "ad7417", I2C_NAME_SIZE);
 		break;
 
 	case ad7418:
 		data->adc_max = 1;
 		data->attrs.attrs = ad7418_attributes;
-		strlcpy(client->name, "ad7418", I2C_NAME_SIZE);
 		break;
 	}
 
-	if ((err = i2c_attach_client(client)))
-		goto exit_free;
-
 	dev_info(&client->dev, "%s chip found\n", client->name);
 
 	/* Initialize the AD7418 chip */
 	ad7418_init_client(client);
 
 	/* Register sysfs hooks */
 	if ((err = sysfs_create_group(&client->dev.kobj, &data->attrs)))
-		goto exit_detach;
+		goto exit_free;
 
 	data->hwmon_dev = hwmon_device_register(&client->dev);
 	if (IS_ERR(data->hwmon_dev)) {
@@ -336,20 +282,17 @@ static int ad7418_detect(struct i2c_adapter *adapter, int address, int kind)
 
 exit_remove:
 	sysfs_remove_group(&client->dev.kobj, &data->attrs);
-exit_detach:
-	i2c_detach_client(client);
 exit_free:
 	kfree(data);
 exit:
 	return err;
 }
 
-static int ad7418_detach_client(struct i2c_client *client)
+static int ad7418_remove(struct i2c_client *client)
 {
 	struct ad7418_data *data = i2c_get_clientdata(client);
 	hwmon_device_unregister(data->hwmon_dev);
 	sysfs_remove_group(&client->dev.kobj, &data->attrs);
-	i2c_detach_client(client);
 	kfree(data);
 	return 0;
 }