程序注解

rgf

求大神给下面的程序做注解，请稍详细些，谢谢。
#include <linux/init.h>
#include <linux/module.h>
2 T' S, B4 ^% N# f2 V# Z" b#include <linux/kernel.h>
, H" O2 _  y% ~5 T/ S#include <linux/types.h>
#include <linux/gpio.h>
3 r$ D* C( ~& H2 F6 N#include <linux/leds.h>
& N- l. b! ?2 ?: ^# h2 E! t#include <linux/platform_device.h>
9 I/ s8 a- u) p( E
5 P# {) }) ~7 T, o#include <asm/mach-types.h>
8 Y3 g6 V" p* S7 C+ I( j#include <asm/mach/arch.h>
% o# N" f* I6 W7 a7 n+ g" f#include <mach/da8xx.h>
' C2 w4 Z( i& _- s; W/ U#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)
5 r4 I) w- z. O7 C7 O  Z  ?8 m6 h
/* assign the tl som board LED-GPIOs*/
, w( v' i  b- l* y( N# wstatic const short da850_evm_tl_user_led_pins[] = {
        /* These pins are definition at <mach/mux.h> file */
  h7 }0 N* c" u0 Q3 K! l        DA850_GPIO0_0, DA850_GPIO0_1, DA850_GPIO0_2, DA850_GPIO0_5,
        -1
};
; z' X7 P" M- Z: b" g, {
static struct gpio_led da850_evm_tl_leds[] = {
        {
( }: e1 g: A8 p& Y+ ]& N9 N/ y                .active_low = 0,
4 {7 y+ h3 g/ `4 \$ I7 ^- V                .gpio = DA850_USER_LED0,
                .name = "user_led0",
; p4 ]3 \5 D# @                .default_trigger = "default-on",
        },
9 w! K7 J6 O! g        {
$ \( X) |; x3 y. ^                .active_low = 0,
+ [* l5 y: n& E; t8 ^8 Y, I/ ~                .gpio = DA850_USER_LED1,
                .name = "user_led1",
6 R% r+ @. N- ]                .default_trigger = "default-on",
% u$ ]2 O+ N- t9 q        },
: |( z/ z2 t$ \$ X/ ~+ n' w% f        {
                .active_low = 0,
                .gpio = DA850_USER_LED2,
                .name = "user_led2",
                .default_trigger = "default-on",
        },
3 m" R( ]% {1 q4 X        {
                .active_low = 0,
- w: k5 H3 A, f& [8 `! e6 |                .gpio = DA850_USER_LED3,
                .name = "user_led3",
# I0 z! k8 l- {3 A                .default_trigger = "default-on",
3 V5 S1 w' D; U4 u! ~! t        },
};
+ A3 M( y0 X5 R8 D) x" M9 }- [
# ?3 z1 G2 I) ?& k' r9 \. ~static struct gpio_led_platform_data da850_evm_tl_leds_pdata = {
        .leds = da850_evm_tl_leds,
        .num_leds = ARRAY_SIZE(da850_evm_tl_leds),
. k( Q9 y. ?; A2 D* R; b+ T7 F};
' Q/ z9 \, P0 M  ?6 @9 E! x3 x
static void led_dev_release(struct device *dev)
{
  l1 m% P0 f7 Q$ \" K};

static struct platform_device da850_evm_tl_leds_device = {
        .name                = "leds-gpio",
        .id                = 1,
6 G3 b2 r3 u5 ?        .dev = {
4 y  @6 y; x+ D1 j9 Y8 P+ q                .platform_data = &da850_evm_tl_leds_pdata,
& k' r4 B2 h0 w/ `                .release = led_dev_release,
" a$ U9 ?' q6 E# m; v+ M        }
9 t: ^6 J: B! \6 Y5 R2 n+ a};
! V4 {2 S) L' U: F( }& K
) M3 S: e4 `0 C' v- t5 [1 Rstatic int __init led_platform_init(void)
{
. G+ @" V+ H; ~) t2 l        int ret;
#if 0
5 V& p3 u! Z5 f7 _. ~6 ]9 i! U4 {        ret = davinci_cfg_reg_list(da850_evm_tl_user_led_pins);
' `- o$ l7 G( R& d/ B, y        if (ret)
                pr_warning("da850_evm_tl_leds_init : User LED mux failed :"
                                "%d\n", ret);
#endif
) i' S" x3 f& C) j8 B1 V- n        ret = platform_device_register(&da850_evm_tl_leds_device);
) f5 i3 N5 T# n& p& P) h        if (ret)
9 r+ q  X% f# m: S( }                pr_warning("Could not register som GPIO expander LEDS");
        else
7 C0 q4 J% G1 I2 p9 N) K0 A( D                printk(KERN_INFO "LED register sucessful!\n");

9 |- \7 Y2 r! W0 P: C5 Z        return ret;
}
: T3 |4 j! D( F& \4 @
static void __exit led_platform_exit(void)
{
+ e) f, Q, h, m$ F6 o" k- R        platform_device_unregister(&da850_evm_tl_leds_device);
' r8 e+ ?  H4 U7 L5 Z# \
        printk(KERN_INFO "LED unregister!\n");
% x3 ]7 \$ j  o' `1 j}

module_init(led_platform_init);
) a+ J) p6 d0 @: O. r6 t+ K7 smodule_exit(led_platform_exit);
8 F% |9 q1 f& O& ^. _
# u0 w& U; W. K" J  TMODULE_DESCRIPTION("Led platform driver");
MODULE_AUTHOR("Tronlong");
MODULE_LICENSE("GPL");

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