w1: add family based automatic module loading

This patch allows the 1-wire bus to autoload the corresponding module
for each slave being attached.
This works similar to bluetooth protocols.

Signed-off-by: Alexander Stein <alexander.stein@informatik.tu-chemnitz.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/w1/slaves/w1_ds2408.c

@@ -22,6 +22,7 @@
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Jean-Francois Dagenais <dagenaisj@sonatest.com>");
 MODULE_DESCRIPTION("w1 family 29 driver for DS2408 8 Pin IO");
+MODULE_ALIAS("w1-family-" __stringify(W1_FAMILY_DS2408));
 
 
 #define W1_F29_RETRIES		3

drivers/w1/slaves/w1_ds2413.c

@@ -23,6 +23,7 @@
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Mariusz Bialonczyk <manio@skyboo.net>");
 MODULE_DESCRIPTION("w1 family 3a driver for DS2413 2 Pin IO");
+MODULE_ALIAS("w1-family-" __stringify(W1_FAMILY_DS2413));
 
 #define W1_F3A_RETRIES                     3
 #define W1_F3A_FUNC_PIO_ACCESS_READ        0xF5

drivers/w1/slaves/w1_ds2423.c

@@ -164,3 +164,4 @@ module_exit(w1_f1d_exit);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Mika Laitio <lamikr@pilppa.org>");
 MODULE_DESCRIPTION("w1 family 1d driver for DS2423, 4 counters and 4kb ram");
+MODULE_ALIAS("w1-family-" __stringify(W1_COUNTER_DS2423));

drivers/w1/slaves/w1_ds2431.c

@@ -310,3 +310,4 @@ module_exit(w1_f2d_fini);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Bernhard Weirich <bernhard.weirich@riedel.net>");
 MODULE_DESCRIPTION("w1 family 2d driver for DS2431, 1kb EEPROM");
+MODULE_ALIAS("w1-family-" __stringify(W1_EEPROM_DS2431));

drivers/w1/slaves/w1_ds2433.c

@@ -29,6 +29,7 @@
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Ben Gardner <bgardner@wabtec.com>");
 MODULE_DESCRIPTION("w1 family 23 driver for DS2433, 4kb EEPROM");
+MODULE_ALIAS("w1-family-" __stringify(W1_EEPROM_DS2433));
 
 #define W1_EEPROM_SIZE		512
 #define W1_PAGE_COUNT		16

drivers/w1/slaves/w1_ds2760.c

@@ -203,3 +203,4 @@ module_exit(w1_ds2760_exit);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>");
 MODULE_DESCRIPTION("1-wire Driver Dallas 2760 battery monitor chip");
+MODULE_ALIAS("w1-family-" __stringify(W1_FAMILY_DS2760));

drivers/w1/slaves/w1_ds2780.c

@@ -188,3 +188,4 @@ module_exit(w1_ds2780_exit);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Clifton Barnes <cabarnes@indesign-llc.com>");
 MODULE_DESCRIPTION("1-wire Driver for Maxim/Dallas DS2780 Stand-Alone Fuel Gauge IC");
+MODULE_ALIAS("w1-family-" __stringify(W1_FAMILY_DS2780));

drivers/w1/slaves/w1_ds2781.c

@@ -186,3 +186,4 @@ module_exit(w1_ds2781_exit);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Renata Sayakhova <renata@oktetlabs.ru>");
 MODULE_DESCRIPTION("1-wire Driver for Maxim/Dallas DS2781 Stand-Alone Fuel Gauge IC");
+MODULE_ALIAS("w1-family-" __stringify(W1_FAMILY_DS2781));

drivers/w1/slaves/w1_ds28e04.c

@@ -27,6 +27,7 @@
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Markus Franke <franke.m@sebakmt.com>, <franm@hrz.tu-chemnitz.de>");
 MODULE_DESCRIPTION("w1 family 1C driver for DS28E04, 4kb EEPROM and PIO");
+MODULE_ALIAS("w1-family-" __stringify(W1_FAMILY_DS28E04));
 
 /* Allow the strong pullup to be disabled, but default to enabled.
  * If it was disabled a parasite powered device might not get the required

drivers/w1/slaves/w1_smem.c

@@ -34,6 +34,8 @@
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Evgeniy Polyakov <zbr@ioremap.net>");
 MODULE_DESCRIPTION("Driver for 1-wire Dallas network protocol, 64bit memory family.");
+MODULE_ALIAS("w1-family-" __stringify(W1_FAMILY_SMEM_01));
+MODULE_ALIAS("w1-family-" __stringify(W1_FAMILY_SMEM_81));
 
 static struct w1_family w1_smem_family_01 = {
 	.fid = W1_FAMILY_SMEM_01,

drivers/w1/slaves/w1_therm.c

@@ -36,6 +36,11 @@
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Evgeniy Polyakov <zbr@ioremap.net>");
 MODULE_DESCRIPTION("Driver for 1-wire Dallas network protocol, temperature family.");
+MODULE_ALIAS("w1-family-" __stringify(W1_THERM_DS18S20));
+MODULE_ALIAS("w1-family-" __stringify(W1_THERM_DS1822));
+MODULE_ALIAS("w1-family-" __stringify(W1_THERM_DS18B20));
+MODULE_ALIAS("w1-family-" __stringify(W1_THERM_DS1825));
+MODULE_ALIAS("w1-family-" __stringify(W1_THERM_DS28EA00));
 
 /* Allow the strong pullup to be disabled, but default to enabled.
  * If it was disabled a parasite powered device might not get the require

drivers/w1/w1.c

@@ -680,6 +680,8 @@ static int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn)
 	atomic_set(&sl->refcnt, 0);
 	init_completion(&sl->released);
 
+	request_module("w1-family-0x%0x", rn->family);
+
 	spin_lock(&w1_flock);
 	f = w1_family_registered(rn->family);
 	if (!f) {