[i2c] [patch 2.6.21-git] i2c-at91 supports new-style binding

[David Brownell]

Make i2c-at91 register as i2c adapter zero (none of these chips seem to
have more than one TWI controller) to let it kick in any board-specific
device declarations; also make it hotplug/coldplug.

Signed-off-by: David Brownell <dbrownell at users.sourceforge.net>

---
RESENT -- this isn't in I2C or MM patch repositories, and should be ...

 drivers/i2c/busses/i2c-at91.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- g26.orig/drivers/i2c/busses/i2c-at91.c	2007-01-07 19:34:46.000000000 -0800
+++ g26/drivers/i2c/busses/i2c-at91.c	2007-05-01 11:26:07.000000000 -0700
@@ -227,13 +227,14 @@ static int __devinit at91_i2c_probe(stru
 	adapter->algo = &at91_algorithm;
 	adapter->class = I2C_CLASS_HWMON;
 	adapter->dev.parent = &pdev->dev;
+	/* adapter->nr == 0 ... only one TWI controller for now */
 
 	platform_set_drvdata(pdev, adapter);
 
 	clk_enable(twi_clk);		/* enable peripheral clock */
 	at91_twi_hwinit();		/* initialize TWI controller */
 
-	rc = i2c_add_adapter(adapter);
+	rc = i2c_add_numbered_adapter(adapter);
 	if (rc) {
 		dev_err(&pdev->dev, "Adapter %s registration failed\n",
 				adapter->name);
@@ -296,6 +297,9 @@ static int at91_i2c_resume(struct platfo
 #define at91_i2c_resume		NULL
 #endif
 
+/* work with "modprobe at91_i2c" from hotplugging or coldplugging */
+MODULE_ALIAS("at91_i2c");
+
 static struct platform_driver at91_i2c_driver = {
 	.probe		= at91_i2c_probe,
 	.remove		= __devexit_p(at91_i2c_remove),