程序注解

rgf

求大神给下面的程序做注解，请稍详细些，谢谢。
1 H& d% V  {/ c5 b! H#include <linux/init.h>
( `3 B7 k: |- R: F#include <linux/module.h>
2 R8 [7 H/ w' n5 e1 T#include <linux/kernel.h>
) r+ F( x# d) H8 `* |" _, r% i#include <linux/types.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/platform_device.h>
) v+ U/ B( v0 e, T
, i' H/ U7 E; O6 R#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/da8xx.h>
* |1 d5 V. [/ G2 {7 A#include <mach/mux.h>

* X; u+ q$ i+ t" y( d! u4 ?#define DA850_USER_LED0        GPIO_TO_PIN(0, 0)
#define DA850_USER_LED1        GPIO_TO_PIN(0, 5)
4 h& D- y7 F* O- b; C# \#define DA850_USER_LED2        GPIO_TO_PIN(0, 1)
#define DA850_USER_LED3        GPIO_TO_PIN(0, 2)

+ M7 y+ B1 B- `( \/* assign the tl som board LED-GPIOs*/
static const short da850_evm_tl_user_led_pins[] = {
        /* These pins are definition at <mach/mux.h> file */
7 F3 `5 |' w6 H        DA850_GPIO0_0, DA850_GPIO0_1, DA850_GPIO0_2, DA850_GPIO0_5,
2 f9 h) c' Z6 d! w- \' u/ s7 K3 G        -1
* L- Z% y* _: S1 S1 j4 A3 d/ b1 A- m};

static struct gpio_led da850_evm_tl_leds[] = {
3 ~. y: x: B* n# \5 B        {
                .active_low = 0,
                .gpio = DA850_USER_LED0,
                .name = "user_led0",
                .default_trigger = "default-on",
$ Q3 e" I/ H# c7 ]0 \/ @) X% w6 u        },
1 |, a( F9 A  ^' F$ O! z        {
+ j: f9 J0 v5 b$ B  ]# u& l                .active_low = 0,
# r8 V% L6 q/ p9 z1 ?3 g$ G/ R: ]9 F                .gpio = DA850_USER_LED1,
                .name = "user_led1",
                .default_trigger = "default-on",
+ ?1 i2 l+ @" ^+ Z5 |, ]        },
6 G* K! H! ?) o! N# X4 m        {
                .active_low = 0,
                .gpio = DA850_USER_LED2,
6 d! B! ^. w, V$ d+ t1 b                .name = "user_led2",
! [- f5 H  ?. l                .default_trigger = "default-on",
        },
1 |/ s: i5 G' l! n+ A! _0 l6 J( y# z        {
                .active_low = 0,
                .gpio = DA850_USER_LED3,
) t% O/ I. ]! L+ |7 o& c                .name = "user_led3",
0 N! Q; D7 l8 L7 u0 N# s- p                .default_trigger = "default-on",
        },
8 S; _" H9 ^, O% [5 D$ Q};
$ L* R/ \3 G' H# y4 K; c  q( B
static struct gpio_led_platform_data da850_evm_tl_leds_pdata = {
        .leds = da850_evm_tl_leds,
' ^# |3 A8 q1 L: N% t        .num_leds = ARRAY_SIZE(da850_evm_tl_leds),
};
( U4 k9 J6 F4 j1 {# P5 M4 S* ?) M' C2 e
static void led_dev_release(struct device *dev)
{
2 T6 x! q  v" a7 x" c};
0 y+ v  d* W$ U0 i; J
( {1 i! W% \6 c; [0 @static struct platform_device da850_evm_tl_leds_device = {
        .name                = "leds-gpio",
* ?4 R$ E; R! X. }% g; y$ C        .id                = 1,
7 W- R" ?$ _" P+ N7 e- H3 k. G        .dev = {
                .platform_data = &da850_evm_tl_leds_pdata,
                .release = led_dev_release,
/ X4 Y" M1 p+ z& J* x, L" ]        }
};
- I8 {* G) g( }7 [
0 i% ^8 }/ ~+ h! ostatic int __init led_platform_init(void)
{
$ r# p2 a8 l, Y# [        int ret;
#if 0
        ret = davinci_cfg_reg_list(da850_evm_tl_user_led_pins);
        if (ret)
0 [% B2 ~3 g& c7 v                pr_warning("da850_evm_tl_leds_init : User LED mux failed :"
                                "%d\n", ret);
; v0 Q; X- d1 ]! L#endif
0 [, d7 u1 U8 q1 i3 g" }        ret = platform_device_register(&da850_evm_tl_leds_device);
0 a( t) u% Z( S: @- e2 J. C/ o, _        if (ret)
                pr_warning("Could not register som GPIO expander LEDS");
        else
                printk(KERN_INFO "LED register sucessful!\n");

6 V" r7 z( K* w$ l3 x        return ret;
2 V: q) a; t9 \8 t4 E}

static void __exit led_platform_exit(void)
2 @" l& n1 A# d{
        platform_device_unregister(&da850_evm_tl_leds_device);
8 B1 G0 s  h) ~# x6 p
        printk(KERN_INFO "LED unregister!\n");
}
  }$ t! }4 u) T* v- [  t
, D7 ~& h- F* X4 J  U# }module_init(led_platform_init);
module_exit(led_platform_exit);
2 P4 Z/ e4 ^; E: d
. d0 F/ E% W1 q3 N/ U5 D. q7 V, OMODULE_DESCRIPTION("Led platform driver");
MODULE_AUTHOR("Tronlong");
MODULE_LICENSE("GPL");