During device instantiation have the at24 driver add the new device to the eeprom_dev hardware class. The functionality is enabled by CONFIG_EEPROM_CLASS.
Signed-off-by: Curt Brune <[email protected]> --- drivers/misc/eeprom/at24.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index d87f77f..07782ea 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -22,10 +22,14 @@ #include <linux/jiffies.h> #include <linux/of.h> #include <linux/i2c.h> #include <linux/platform_data/at24.h> +#ifdef CONFIG_EEPROM_CLASS +#include <linux/eeprom_class.h> +#endif + /* * I2C EEPROMs from most vendors are inexpensive and mostly interchangeable. * Differences between different vendor product lines (like Atmel AT24C or * MicroChip 24LC, etc) won't much matter for typical read/write access. * There are also I2C RAM chips, likewise interchangeable. One example @@ -66,10 +70,13 @@ struct at24_data { u8 *writebuf; unsigned write_max; unsigned num_addresses; +#ifdef CONFIG_EEPROM_CLASS + struct device *eeprom_dev; +#endif /* * Some chips tie up multiple I2C addresses; dummy devices reserve * them for us, and we'll use them with SMBus calls. */ struct i2c_client *client[]; @@ -619,10 +626,19 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id) err = sysfs_create_bin_file(&client->dev.kobj, &at24->bin); if (err) goto err_clients; +#ifdef CONFIG_EEPROM_CLASS + at24->eeprom_dev = eeprom_device_register(&client->dev); + if (IS_ERR(at24->eeprom_dev)) { + dev_err(&client->dev, "error registering eeprom device.\n"); + err = PTR_ERR(at24->eeprom_dev); + goto err_clients; + } +#endif + i2c_set_clientdata(client, at24); dev_info(&client->dev, "%zu byte %s EEPROM, %s, %u bytes/write\n", at24->bin.size, client->name, writable ? "writable" : "read-only", at24->write_max); @@ -656,10 +672,14 @@ static int at24_remove(struct i2c_client *client) sysfs_remove_bin_file(&client->dev.kobj, &at24->bin); for (i = 1; i < at24->num_addresses; i++) i2c_unregister_device(at24->client[i]); +#ifdef CONFIG_EEPROM_CLASS + eeprom_device_unregister(at24->eeprom_dev); +#endif + return 0; } /*-------------------------------------------------------------------------*/ -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
