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£¨1£©ÔÚ\drivers\input\Input.cÖС£
A£¬subsys_initcall(input_init);
B£¬static int __init input_init(void)ÖÐÍê³É¼¸¸öÖØÒªµÄ²Ù×÷£º
err = class_register(&input_class);ÒÔÊäÈëÀ෽ʽע²áÀà
input_proc_init(); //´´½¨procϵÄĿ¼ºÍÎļþ
register_chrdev(INPUT_MAJOR, "input", &input_fops); //×¢²á×Ö·ûÉ豸Çý¶¯³ÌÐòµ½ÄÚºË
£¨2£©ÔÚdrivers\input\keyboard\S3c-keypad.cÖУ¬ÊÇ×Ô¼ºµÄ°´¼ü´¦ÀíÎļþ¡£
A£¬¶¨Ò司androidÉϲãµÄÂëÖµ
#define KEYCODE_HOME 58
#define KEYCODE_POWER 50
struct s3c_keypad_gpio_key gpio_key_smdk6410[] = {
{IRQ_EINT(6), S3C64XX_GPN(6), 2, KEYCODE_POWER, 1},
{IRQ_EINT(7), S3C64XX_GPN(7), 2, KEYCODE_HOME, 1},
};
·Ö±ðÊÇÍⲿÖжϺţ¬GPIO¿ÚºÅ£¬ÂëÖµ¡£
B£¬probe¹ý³Ì£º
module_init(s3c_keypad_init); //°´¼üinit
platform_driver_register(&s3c_keypad_driver); //×¢²áƽ̨Çý¶¯
s3c_keypad_driverµÄprobeº¯ÊýÊÇÖ÷Òª´¦Àí¹ý³Ì£º
static int __init s3c_keypad_probe(struct platform_device *pdev)
{
struct input_dev *input_dev; //×¢²áÒ»¸öÊäÈëÉ豸
platform_get_resource(pdev, IORESOURCE_MEM, 0);
request_mem_region(res->start, size, pdev->name);
ioremap(res->start, size); //·ÖÅä×ÊÔ´
keypad_clock = clk_get(&pdev->dev, "keypad");
clk_enable(keypad_clock); //»ñµÃkeypadµÄclock
set_bit(EV_KEY, input_dev->evbit); //±êÖ¾input_devÊÇKEYÉ豸
s3c_gpio_cfgpin(gpio_key->gpio, S3C_GPIO_SFN(gpio_key->gpio_af));
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