蜗窝科技
蜗窝科技

请教大家 linux-2.6.22.6中i2c_register_driver（） 中drivers，adapters在哪儿定义的？

蜗窝讨论区存档 · Linux kernel技术问答 · 楼主 wall-E · 2016-12-17 · 2 帖

本文是原「蜗窝讨论区」的历史存档（2016-12-17），来自版块「Linux kernel技术问答」，共 2 帖。讨论区已停止服务，此处仅供查阅。

wall-E · 2016-12-17 21:43

int i2c_register_driver(struct module owner, struct i2c_driver driver) { int res;

/* new style driver methods can't mix with legacy ones */
if (is_newstyle_driver(driver)) {
    if (driver->attach_adapter || driver->detach_adapter
            || driver->detach_client) {
        printk(KERN_WARNING
                "i2c-core: driver [%s] is confused\n",
                driver->driver.name);
        return -EINVAL;
    }
}

/* add the driver to the list of i2c drivers in the driver core */
driver->driver.owner = owner;
driver->driver.bus = &i2c_bus_type;


/* for new style drivers, when registration returns the driver core


    

  • will have called probe( for all matching-but-unbound devices.
*/
res = driver_register(&driver->driver);
if (res)
return res;
    • 



mutex_lock(&core_lists);
list_add_tail(&driver->list,&drivers); //drivers在哪儿定义的？
pr_debug(“i2c-core: driver [%s] registered\n”, driver->driver.name);


/* legacy drivers scan i2c busses directly */
if (driver->attach_adapter) {
struct i2c_adapter *adapter;


list_for_each_entry(adapter, &adapters, list) { //adatpters在哪儿定义的
    driver->attach_adapter(adapter);
}

}
mutex_unlock(&core_lists);
return 0;

}

wowo · 2016-12-21 17:00

wall-E 写道： int i2c_register_driver(struct module owner, struct i2c_driver driver) { int res;

/* new style driver methods can't mix with legacy ones */
if (is_newstyle_driver(driver)) {
    if (driver->attach_adapter || driver->detach_adapter
            || driver->detach_client) {
        printk(KERN_WARNING
                "i2c-core: driver [%s] is confused\n",
                driver->driver.name);
        return -EINVAL;
    }
}

/* add the driver to the list of i2c drivers in the driver core */
driver->driver.owner = owner;
driver->driver.bus = &i2c_bus_type;


/* for new style drivers, when registration returns the driver core


    

  • will have called probe( for all matching-but-unbound devices.
*/
res = driver_register(&driver->driver);
if (res)
return res;
    • 



mutex_lock(&core_lists);
list_add_tail(&driver->list,&drivers); //drivers在哪儿定义的？
pr_debug(“i2c-core: driver [%s] registered\n”, driver->driver.name);


/* legacy drivers scan i2c busses directly */
if (driver->attach_adapter) {
struct i2c_adapter *adapter;


list_for_each_entry(adapter, &adapters, list) { //adatpters在哪儿定义的
    driver->attach_adapter(adapter);
}

}
mutex_unlock(&core_lists);
return 0;

}

grep一下总能找得着啊，手上没有你这个版本的代码，就不帮你找了……