From: Xiao Jiang <jgq516@xxxxxxxxx>
The following changes are ensure at24 driver can be probed successfully,
which are based on Linux 2.6.36-rc5.
1. Add class, detect and address_list member in at24_driver because they
will be check in i2c_detect().
2. Since the at24 driver are tightly coupled with i2c bus driver, make
sure it's init priority is lower than i2c bus.
Signed-off-by: Xiao Jiang <jgq516@xxxxxxxxx>
---
drivers/misc/eeprom/at24.c | 16 +++++++++++++++-
1 files changed, 15 insertions(+), 1 deletions(-)
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index 559b0b3..a40f74e 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -129,6 +129,9 @@ static const struct i2c_device_id at24_ids[] = {
};
MODULE_DEVICE_TABLE(i2c, at24_ids);
+/* Addresses to scan */
+static const unsigned short normal_i2c[] = { 0x50, 0x51, 0x52, 0x53, 0x54,
+ 0x55, 0x56, 0x57, I2C_CLIENT_END };
/*-------------------------------------------------------------------------*/
/*
@@ -646,6 +649,13 @@ static int __devexit at24_remove(struct i2c_client *client)
return 0;
}
+static int at24_detect(struct i2c_client *client, struct i2c_board_info *info)
+{
+ strlcpy(info->type, "at24", I2C_NAME_SIZE);
+
+ return 0;
+}
+
/*-------------------------------------------------------------------------*/
static struct i2c_driver at24_driver = {
@@ -656,6 +666,10 @@ static struct i2c_driver at24_driver = {
.probe = at24_probe,
.remove = __devexit_p(at24_remove),
.id_table = at24_ids,
+
+ .class = I2C_CLASS_SPD,
+ .detect = at24_detect,
+ .address_list = normal_i2c,
};
static int __init at24_init(void)
@@ -663,7 +677,7 @@ static int __init at24_init(void)
io_limit = rounddown_pow_of_two(io_limit);
return i2c_add_driver(&at24_driver);
}
-module_init(at24_init);
+device_initcall_sync(at24_init);
static void __exit at24_exit(void)
{
--
1.6.3.3
--
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