程序注解

rgf

求大神给下面的程序做注解，请稍详细些，谢谢。
5 ]% D* r* g) D5 T#include <linux/init.h>
#include <linux/module.h>
8 M, ?9 t7 e8 i#include <linux/kernel.h>
2 e% R% C* G3 m& _* i/ z% R- Z#include <linux/types.h>
#include <linux/gpio.h>
* r4 g/ n' Y& X: {: q9 t7 w9 G#include <linux/leds.h>
#include <linux/platform_device.h>

, b0 @/ w6 r2 U" m#include <asm/mach-types.h>
6 U9 V4 }8 O) a4 q#include <asm/mach/arch.h>
  V4 H( Q- s; B% I6 U# P: A4 t#include <mach/da8xx.h>
2 O( @0 ~4 q3 a#include <mach/mux.h>
7 I' Y% y5 ?& ?
#define DA850_USER_LED0        GPIO_TO_PIN(0, 0)
" L1 z" _" H+ ]9 v! q; R#define DA850_USER_LED1        GPIO_TO_PIN(0, 5)
& O  o, x3 V3 r+ a8 ^0 h#define DA850_USER_LED2        GPIO_TO_PIN(0, 1)
: `3 J9 \- V! t6 ]* Z6 V#define DA850_USER_LED3        GPIO_TO_PIN(0, 2)
/ {1 c( ^8 K) X, o5 v' b
/* assign the tl som board LED-GPIOs*/
. b2 u( k5 o4 p/ n! nstatic 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,
        -1
};

' R! T4 K7 ^2 b2 r" h! kstatic struct gpio_led da850_evm_tl_leds[] = {
/ k; j1 }: I2 G1 c* g        {
                .active_low = 0,
                .gpio = DA850_USER_LED0,
& [# [( K' _* f+ }6 w6 S                .name = "user_led0",
                .default_trigger = "default-on",
        },
        {
                .active_low = 0,
, E+ T6 w( X9 v" r' W5 b/ B7 j# d                .gpio = DA850_USER_LED1,
  {5 g# x* ]2 c0 X& J$ @) j                .name = "user_led1",
                .default_trigger = "default-on",
5 N& K5 o; _, w        },
        {
( E. X1 _$ ~# ~5 X+ m* }                .active_low = 0,
                .gpio = DA850_USER_LED2,
1 L; @' A, m" l1 b  b                .name = "user_led2",
                .default_trigger = "default-on",
* l( s/ D0 j" W  I        },
        {
                .active_low = 0,
' T9 o& p* p3 ?% O4 f                .gpio = DA850_USER_LED3,
                .name = "user_led3",
) \6 t3 |( ^+ ~1 O" f; d                .default_trigger = "default-on",
        },
" r, H8 v3 L( K};
; e4 W5 r1 v& }' b
static struct gpio_led_platform_data da850_evm_tl_leds_pdata = {
        .leds = da850_evm_tl_leds,
        .num_leds = ARRAY_SIZE(da850_evm_tl_leds),
};
6 ?4 O% T% p: ?" E. N$ u
: L8 p0 i6 h0 S& w8 |, l7 u# Lstatic void led_dev_release(struct device *dev)
% q) x; U+ V( {" G{
};

static struct platform_device da850_evm_tl_leds_device = {
        .name                = "leds-gpio",
5 w# u" Z- [- k        .id                = 1,
        .dev = {
                .platform_data = &da850_evm_tl_leds_pdata,
, p* b$ O, N* x                .release = led_dev_release,
2 u3 P( M* X- o- l9 c& w9 ]        }
};

static int __init led_platform_init(void)
{
        int ret;
#if 0
; f& G8 }: M/ X        ret = davinci_cfg_reg_list(da850_evm_tl_user_led_pins);
        if (ret)
3 c8 ?- i" w8 T% m8 W& J: }( a; ]& |                pr_warning("da850_evm_tl_leds_init : User LED mux failed :"
: g. x0 S; A5 _  e0 ~8 c& @                                "%d\n", ret);
#endif
        ret = platform_device_register(&da850_evm_tl_leds_device);
# }5 d4 R  ~0 P2 F2 X" Z( `- \+ \* N- [        if (ret)
                pr_warning("Could not register som GPIO expander LEDS");
1 X' G- }$ p0 I2 k        else
                printk(KERN_INFO "LED register sucessful!\n");
4 H0 ^4 L" s) T, M7 t9 ^
        return ret;
6 g1 ~$ e5 h8 i. @- R% N}
: V8 y" o& r+ \
static void __exit led_platform_exit(void)
! [% h, R% ]5 O1 T( E{
        platform_device_unregister(&da850_evm_tl_leds_device);
5 i( z0 \! Y4 `/ c& j) |
        printk(KERN_INFO "LED unregister!\n");
# N( U. `& v# _3 z3 t! ~}

module_init(led_platform_init);
" t4 v* T5 V& Q2 Wmodule_exit(led_platform_exit);
( V% S/ Y8 `0 \, U2 j& t2 q
# [4 ]; C  q+ }/ i/ }, ~) EMODULE_DESCRIPTION("Led platform driver");
MODULE_AUTHOR("Tronlong");
MODULE_LICENSE("GPL");
& ~8 v9 A5 f9 A) g