程序注解

rgf

求大神给下面的程序做注解，请稍详细些，谢谢。
: E, ?7 ?  n( L#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
/ y% d% u( r) O2 B1 b#include <linux/types.h>
( Z! t8 M7 o$ J8 `/ U& ^) l1 Z, X#include <linux/gpio.h>
#include <linux/leds.h>
8 Q# ?* X' f; ^/ v% v  q#include <linux/platform_device.h>
0 n/ t' U% s/ v, A" C* n# _0 |
. F: H/ F+ h+ J0 T#include <asm/mach-types.h>
7 ^* p5 y# t6 M& v5 j3 C#include <asm/mach/arch.h>
#include <mach/da8xx.h>
2 L$ k  ]& L0 ^4 z4 S% J8 t: G# }#include <mach/mux.h>

#define DA850_USER_LED0        GPIO_TO_PIN(0, 0)
#define DA850_USER_LED1        GPIO_TO_PIN(0, 5)
#define DA850_USER_LED2        GPIO_TO_PIN(0, 1)
#define DA850_USER_LED3        GPIO_TO_PIN(0, 2)
1 \( W8 t& N$ R; t9 _9 B' I
/* assign the tl som board LED-GPIOs*/
2 E9 E% y. j7 }4 b9 P2 e+ X' astatic const short da850_evm_tl_user_led_pins[] = {
        /* These pins are definition at <mach/mux.h> file */
        DA850_GPIO0_0, DA850_GPIO0_1, DA850_GPIO0_2, DA850_GPIO0_5,
0 e+ j9 G* S3 B  i; _+ Z- l4 |        -1
};
5 Z! s% _* |) r/ ?& k0 ]
static struct gpio_led da850_evm_tl_leds[] = {
        {
                .active_low = 0,
9 k- o$ G" g6 s: w' ?                .gpio = DA850_USER_LED0,
                .name = "user_led0",
                .default_trigger = "default-on",
        },
        {
  a$ v0 N/ ~% u, j$ k" ?                .active_low = 0,
                .gpio = DA850_USER_LED1,
                .name = "user_led1",
                .default_trigger = "default-on",
% l& l/ {! J6 H2 T3 [2 @        },
3 Y$ T$ ~/ |# Z( Q: c        {
9 j! S; o* t$ m4 K% ~1 S3 ~                .active_low = 0,
4 m: i: Q0 I/ ^0 ^2 t, j                .gpio = DA850_USER_LED2,
% C! U$ o# I& h7 {                .name = "user_led2",
                .default_trigger = "default-on",
        },
        {
                .active_low = 0,
: k9 J; C! g0 N/ [5 {% i5 J                .gpio = DA850_USER_LED3,
                .name = "user_led3",
) J$ ^+ d# q9 X$ t; K: F2 G                .default_trigger = "default-on",
        },
};

static struct gpio_led_platform_data da850_evm_tl_leds_pdata = {
        .leds = da850_evm_tl_leds,
        .num_leds = ARRAY_SIZE(da850_evm_tl_leds),
$ z" t* v# u4 [+ b5 }* k0 N};

static void led_dev_release(struct device *dev)
$ T7 |2 r3 d1 b{
};
3 R* T/ J- `/ N5 S) L9 {
static struct platform_device da850_evm_tl_leds_device = {
; G, f, |0 z- D: d$ Q, R        .name                = "leds-gpio",
' d1 E9 S# U7 d6 {& K0 Q, G9 W) [        .id                = 1,
% S, v7 f$ |2 ?# T/ r2 H3 r        .dev = {
' y; F5 i7 d" \! n/ w" d                .platform_data = &da850_evm_tl_leds_pdata,
; s( n* M- w. Q4 ~* S  T. B5 i                .release = led_dev_release,
        }
( S6 F5 p, C0 |6 A$ M: x# z};

8 [2 m1 B; ?: _6 ^static int __init led_platform_init(void)
. Y2 z3 x8 j2 M; j# ~* D8 b{
        int ret;
#if 0
* l- N2 Q) @7 c        ret = davinci_cfg_reg_list(da850_evm_tl_user_led_pins);
' [& d2 }) ^* j; N: \# ?0 {        if (ret)
                pr_warning("da850_evm_tl_leds_init : User LED mux failed :"
                                "%d\n", ret);
# S( `" O  U- f2 @$ Z* h7 Z) H; Y; H#endif
        ret = platform_device_register(&da850_evm_tl_leds_device);
5 ^* q5 G) k' F, {        if (ret)
1 @( S% f7 B5 G6 m* @4 y4 v1 s, w  f                pr_warning("Could not register som GPIO expander LEDS");
        else
& \% Y* W7 q8 K3 A& y6 {                printk(KERN_INFO "LED register sucessful!\n");

        return ret;
* L1 ~) }( P5 a, |% k, f}
  I; D1 p/ C3 q
4 n, B1 l2 |# @5 Mstatic void __exit led_platform_exit(void)
{
4 ?+ P. L  \% f" u        platform_device_unregister(&da850_evm_tl_leds_device);

4 m2 R2 r: M9 o        printk(KERN_INFO "LED unregister!\n");
( {+ J/ ], \1 U8 ?6 `}

module_init(led_platform_init);
module_exit(led_platform_exit);

2 i) j# ~7 q9 c* W9 F: g3 QMODULE_DESCRIPTION("Led platform driver");
0 y6 I" \6 i) c3 h9 ~MODULE_AUTHOR("Tronlong");
MODULE_LICENSE("GPL");
5 O0 z8 U9 `) ]+ Z0 F2 z$ f, s