程序注解

rgf

求大神给下面的程序做注解，请稍详细些，谢谢。
4 V  L' h' C: L4 j' G( L#include <linux/init.h>
#include <linux/module.h>
: S4 f1 n5 ?" C7 m* L, _#include <linux/kernel.h>
#include <linux/types.h>
+ d: Z8 M& B, Q- Z#include <linux/gpio.h>
( V7 e# u1 S+ n. o7 d# M- }  i#include <linux/leds.h>
# v; v! d0 J6 o" i( s#include <linux/platform_device.h>

/ e' t7 q  E* H0 L#include <asm/mach-types.h>
" o9 c# s0 a/ d- t0 u) i' [& ~; ^( d#include <asm/mach/arch.h>
* g7 ^' D: T9 t3 Z# A#include <mach/da8xx.h>
' O( Q2 s8 q2 c! T3 g#include <mach/mux.h>

2 N% w. B5 g; U. G#define DA850_USER_LED0        GPIO_TO_PIN(0, 0)
+ G" Y9 y1 Z; l* w1 X#define DA850_USER_LED1        GPIO_TO_PIN(0, 5)
. L- ^8 W/ B% H% \' Z4 m9 r#define DA850_USER_LED2        GPIO_TO_PIN(0, 1)
) O& u! y/ ]" s2 N! O) |8 c#define DA850_USER_LED3        GPIO_TO_PIN(0, 2)

3 S& p3 J  S! u, c; H$ }/* assign the tl som board LED-GPIOs*/
! V. T; t% f. V- J' m$ Z5 Gstatic const short da850_evm_tl_user_led_pins[] = {
        /* These pins are definition at <mach/mux.h> file */
8 j, D' f- L; z+ N; u        DA850_GPIO0_0, DA850_GPIO0_1, DA850_GPIO0_2, DA850_GPIO0_5,
  C, |/ C, m8 e! D, h0 t2 @        -1
; \/ h2 {* V$ {- q" Y- |};

static struct gpio_led da850_evm_tl_leds[] = {
7 {2 c; _& W- n  P3 [9 z: L/ p- S        {
                .active_low = 0,
                .gpio = DA850_USER_LED0,
4 u" W- h3 u7 f9 Z0 I                .name = "user_led0",
' v7 f& F; F4 N$ I                .default_trigger = "default-on",
, f7 B% D9 @3 q1 ]! o. T( @; C- E        },
        {
8 v4 \" z. w! w                .active_low = 0,
  S$ J: }! F; X' g8 q                .gpio = DA850_USER_LED1,
                .name = "user_led1",
                .default_trigger = "default-on",
        },
& p' L  U; c' ~8 g        {
7 |2 b$ i1 {6 _# }7 y                .active_low = 0,
0 Y! [- |! Z' w                .gpio = DA850_USER_LED2,
6 C& N4 T' \% A, z0 a3 J0 i% y                .name = "user_led2",
                .default_trigger = "default-on",
        },
        {
1 L& t) D# e+ t) u, [8 V' t& a                .active_low = 0,
/ n; M9 \% Q* _" U5 {' B                .gpio = DA850_USER_LED3,
6 z# m0 j( A" I, `; x                .name = "user_led3",
                .default_trigger = "default-on",
        },
};

1 K8 \% X2 E- f6 F3 r: i. s" Sstatic struct gpio_led_platform_data da850_evm_tl_leds_pdata = {
) f, w! {. T9 `) e$ F- }        .leds = da850_evm_tl_leds,
        .num_leds = ARRAY_SIZE(da850_evm_tl_leds),
. c3 e1 _+ W: r4 N! T9 r};
& j& z0 C/ y4 v, r. f% q
static void led_dev_release(struct device *dev)
{
) o2 ^  ?# f1 o};

static struct platform_device da850_evm_tl_leds_device = {
        .name                = "leds-gpio",
        .id                = 1,
' c4 K' L7 B/ W8 ]        .dev = {
/ M6 {: F; G1 Z2 r9 Q                .platform_data = &da850_evm_tl_leds_pdata,
7 ?/ e5 e5 p+ d6 S# Q                .release = led_dev_release,
        }
};
3 L7 Y6 D) b! n# C6 _4 r
! U$ U# a( C& Z7 A$ cstatic int __init led_platform_init(void)
{
6 Z; m3 I' X  b        int ret;
* p' a5 |1 r1 ~' M! w#if 0
1 e8 ]4 Y* a% b2 y        ret = davinci_cfg_reg_list(da850_evm_tl_user_led_pins);
        if (ret)
                pr_warning("da850_evm_tl_leds_init : User LED mux failed :"
& _+ f! S( a6 n1 h* c                                "%d\n", ret);
#endif
        ret = platform_device_register(&da850_evm_tl_leds_device);
        if (ret)
                pr_warning("Could not register som GPIO expander LEDS");
        else
* V6 B7 y* ]! r) G: {& b' p                printk(KERN_INFO "LED register sucessful!\n");
5 u- @" l3 A- f# ?2 a8 ^5 K
        return ret;
}
5 B" H- f! i# a& E& Z# A. Y/ u; |
  c7 @( ^/ p: ~9 t* F" K& V1 Ystatic void __exit led_platform_exit(void)
{
        platform_device_unregister(&da850_evm_tl_leds_device);

8 p# a& G2 o- K6 n; {5 H0 m/ r        printk(KERN_INFO "LED unregister!\n");
' `' G" u: _9 Z5 `}
7 M, s2 h4 z- g2 r. ^, \
module_init(led_platform_init);
- Z" G/ |" m+ u9 L+ c0 z  |module_exit(led_platform_exit);
2 M) A9 ?7 N) a% @+ f
MODULE_DESCRIPTION("Led platform driver");
% `) ?0 P5 I9 g, [9 M2 f$ J9 bMODULE_AUTHOR("Tronlong");
3 q. f  T4 I7 m2 d# n7 IMODULE_LICENSE("GPL");