diff options
Diffstat (limited to 'drivers/i2c/i2c-uclass.c')
| -rw-r--r-- | drivers/i2c/i2c-uclass.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-uclass.c b/drivers/i2c/i2c-uclass.c index 975318e5f25..7595b9b0f9f 100644 --- a/drivers/i2c/i2c-uclass.c +++ b/drivers/i2c/i2c-uclass.c @@ -619,6 +619,30 @@ static int i2c_child_post_bind(struct udevice *dev) #endif } +struct i2c_priv { + int max_id; +}; + +int i2c_uclass_init(struct uclass *class) +{ + struct i2c_priv *priv = class->priv; + + /* Just for sure */ + if (!priv) + return -ENOMEM; + + /* Get the last allocated alias. */ +#if CONFIG_IS_ENABLED(OF_CONTROL) + priv->max_id = dev_read_alias_highest_id("i2c"); +#else + priv->max_id = -1; +#endif + + debug("%s: highest alias id is %d\n", __func__, priv->max_id); + + return 0; +} + UCLASS_DRIVER(i2c) = { .id = UCLASS_I2C, .name = "i2c", @@ -626,6 +650,8 @@ UCLASS_DRIVER(i2c) = { #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) .post_bind = dm_scan_fdt_dev, #endif + .init = i2c_uclass_init, + .priv_auto_alloc_size = sizeof(struct i2c_priv), .post_probe = i2c_post_probe, .per_device_auto_alloc_size = sizeof(struct dm_i2c_bus), .per_child_platdata_auto_alloc_size = sizeof(struct dm_i2c_chip), |