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>
/ d4 |3 Y3 t: d/ }7 |$ p. n#include <linux/module.h>
#include <linux/kernel.h>
! P  N; x% O: D  X8 p#include <linux/types.h>
#include <linux/gpio.h>
2 |. S: F( j6 c6 N- K#include <linux/leds.h>
/ @1 Z- H8 V/ o' z#include <linux/platform_device.h>
# e9 l. d" W! N
#include <asm/mach-types.h>
' z& j( [- }5 z! ^& `  h6 j#include <asm/mach/arch.h>
, f" c# F# F$ k9 X- t" H1 Z1 _" C#include <mach/da8xx.h>
#include <mach/mux.h>

5 T, }  m- P2 t& C& [: s#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)
; A& s7 {9 _" F' X. {9 P: |#define DA850_USER_LED3        GPIO_TO_PIN(0, 2)

/* assign the tl som board LED-GPIOs*/
+ S' j/ ]& ~# w& c/ q5 Istatic const short da850_evm_tl_user_led_pins[] = {
. _3 h! X2 Y  t- K1 j/ J, n        /* These pins are definition at <mach/mux.h> file */
* s! _! J4 w, A& Z        DA850_GPIO0_0, DA850_GPIO0_1, DA850_GPIO0_2, DA850_GPIO0_5,
, G$ V4 _6 M" E7 k9 @        -1
& w" N$ Z4 e$ x2 u- c" `};
0 S+ W8 j  C# j, P6 M* J" Y
: t+ q- }. V1 F) ustatic struct gpio_led da850_evm_tl_leds[] = {
        {
! {" v, O  U+ T3 E* p+ S                .active_low = 0,
                .gpio = DA850_USER_LED0,
# {1 N& z, E+ V. M* C* q                .name = "user_led0",
$ m, U, O3 F, ]7 T% s                .default_trigger = "default-on",
% u; \0 N* Y2 Y) H( p+ U/ L/ |        },
        {
- b- {* ]0 T2 Q4 A$ u7 ?                .active_low = 0,
                .gpio = DA850_USER_LED1,
                .name = "user_led1",
' ^5 B. g& T: s                .default_trigger = "default-on",
8 q- L6 C. j2 \' `        },
        {
                .active_low = 0,
                .gpio = DA850_USER_LED2,
                .name = "user_led2",
                .default_trigger = "default-on",
        },
! w' K. Q% A7 {" ?* Z* M8 L3 \        {
                .active_low = 0,
) V. @+ Z7 b+ |0 r- b( s: u                .gpio = DA850_USER_LED3,
                .name = "user_led3",
" H# F" K! z- t1 G6 J2 m/ e                .default_trigger = "default-on",
        },
};
/ e3 F' P# |$ i
  D9 y. V( l# A# t: n9 I) {static struct gpio_led_platform_data da850_evm_tl_leds_pdata = {
        .leds = da850_evm_tl_leds,
        .num_leds = ARRAY_SIZE(da850_evm_tl_leds),
! G8 W: E( w6 a$ T9 U/ C' v};

static void led_dev_release(struct device *dev)
{
};

( g# P5 @; C. L6 tstatic struct platform_device da850_evm_tl_leds_device = {
! Q' ]# x& k" M$ s( m: s% R- Z        .name                = "leds-gpio",
        .id                = 1,
        .dev = {
4 J* V/ N/ \9 s/ _% V                .platform_data = &da850_evm_tl_leds_pdata,
9 x6 j4 ?- @4 ~; D  {                .release = led_dev_release,
        }
};

static int __init led_platform_init(void)
{
        int ret;
& _% P/ ?2 ~  L3 c  ^* s8 G3 s# K#if 0
        ret = davinci_cfg_reg_list(da850_evm_tl_user_led_pins);
        if (ret)
0 F2 N) I8 W3 s  ?                pr_warning("da850_evm_tl_leds_init : User LED mux failed :"
                                "%d\n", ret);
! T& J$ n" B$ c% Y" `#endif
        ret = platform_device_register(&da850_evm_tl_leds_device);
        if (ret)
# P1 Y' Y; m- o5 V8 {                pr_warning("Could not register som GPIO expander LEDS");
        else
                printk(KERN_INFO "LED register sucessful!\n");

        return ret;
}
: w8 J: _! R* w; t
static void __exit led_platform_exit(void)
{
        platform_device_unregister(&da850_evm_tl_leds_device);
0 p2 O) `6 V0 T; l/ S8 C1 |
        printk(KERN_INFO "LED unregister!\n");
}

module_init(led_platform_init);
module_exit(led_platform_exit);
( p7 L( i0 b/ U: J% k/ e) f2 s
' L2 E% ]3 T) u( yMODULE_DESCRIPTION("Led platform driver");
MODULE_AUTHOR("Tronlong");
MODULE_LICENSE("GPL");

: J0 q( P" g( l; v7 P. O$ e) f