程序注解

rgf

求大神给下面的程序做注解，请稍详细些，谢谢。
: ?' f! f; r/ \" S! i( d, g#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/gpio.h>
3 Z& K; W. S* H3 S7 X7 p#include <linux/leds.h>
, s2 T! q% N0 v1 j#include <linux/platform_device.h>
4 C' V6 u" f, |  y; }2 ?
2 u4 Z( i- ?% @( [& H#include <asm/mach-types.h>
- D' p9 V' y/ c, f#include <asm/mach/arch.h>
#include <mach/da8xx.h>
6 ]$ E# N1 \) v7 q#include <mach/mux.h>
/ z- Z( S! ]" H/ M2 l) _' i
#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)
8 t( J9 J( i% s! _3 K#define DA850_USER_LED3        GPIO_TO_PIN(0, 2)

5 p: `0 ^( e& @' D1 I2 |/* assign the tl som board LED-GPIOs*/
9 k  X* J, p3 A. t1 ustatic const short da850_evm_tl_user_led_pins[] = {
5 `# y9 i7 C# l+ U$ P# X7 t6 \        /* These pins are definition at <mach/mux.h> file */
        DA850_GPIO0_0, DA850_GPIO0_1, DA850_GPIO0_2, DA850_GPIO0_5,
' H( G6 i5 P2 Y# `- [- \+ T; j0 p2 [        -1
};
4 s% o- V( n8 u( c) Q; v: F
, B* U- O+ o4 v5 t8 z& D  Astatic struct gpio_led da850_evm_tl_leds[] = {
        {
                .active_low = 0,
- b4 ^+ U4 e2 T1 l; k                .gpio = DA850_USER_LED0,
                .name = "user_led0",
2 ?+ C1 p* B1 ]1 Q8 P" p( k/ w                .default_trigger = "default-on",
        },
8 F! Y7 ?/ N- N6 F2 D( J        {
0 R, O$ p" ?/ @, n9 q                .active_low = 0,
9 w% L" [9 r# C. R  o1 |8 n& T- q                .gpio = DA850_USER_LED1,
& ~, H! D; J0 E8 ?) ^: d9 ^                .name = "user_led1",
- Y- w9 Q3 A" X2 G* [. H                .default_trigger = "default-on",
/ R7 n% P' a: w- x" ~# o3 k        },
+ Q4 X7 Q  i! r+ _+ H' ^        {
                .active_low = 0,
                .gpio = DA850_USER_LED2,
" x( M! C7 g2 ~" ~9 ?3 l" o                .name = "user_led2",
                .default_trigger = "default-on",
4 s9 p6 N( t9 @        },
        {
                .active_low = 0,
                .gpio = DA850_USER_LED3,
                .name = "user_led3",
                .default_trigger = "default-on",
        },
! N) X' n8 l- _& G};
; \9 Q. [# l1 K/ S7 i1 o; _
static struct gpio_led_platform_data da850_evm_tl_leds_pdata = {
7 u/ f7 f- I0 c: U! s4 L* c        .leds = da850_evm_tl_leds,
+ Y" w: M% d0 ^' Y, k; b        .num_leds = ARRAY_SIZE(da850_evm_tl_leds),
};
/ ^7 a' G! |& W+ \- S
static void led_dev_release(struct device *dev)
- g7 u- F2 _* |# C* s# r{
" O9 ^' D# }5 R0 w6 U};
' t6 u5 @: `  K
static struct platform_device da850_evm_tl_leds_device = {
# X) G# i' n! D% }        .name                = "leds-gpio",
# V) e; Z7 q5 A        .id                = 1,
8 c7 l6 ^. k  |' _/ C/ m$ {1 u        .dev = {
                .platform_data = &da850_evm_tl_leds_pdata,
                .release = led_dev_release,
+ ~+ {( n/ V) p  _: ^, F" m        }
};
! ~  O" Z. F, B5 m  a
static int __init led_platform_init(void)
6 n2 I- I7 i# D+ W: d{
6 [4 I( g$ _/ B! k( C$ [        int ret;
#if 0
        ret = davinci_cfg_reg_list(da850_evm_tl_user_led_pins);
        if (ret)
# S3 [4 G( S" @5 Y; {6 c. s9 d                pr_warning("da850_evm_tl_leds_init : User LED mux failed :"
                                "%d\n", ret);
& |( _) e" ]& l' L4 b! V#endif
6 w4 [; g, Z( `1 P; a% }        ret = platform_device_register(&da850_evm_tl_leds_device);
        if (ret)
                pr_warning("Could not register som GPIO expander LEDS");
        else
* G, q7 r4 t8 p0 p8 U                printk(KERN_INFO "LED register sucessful!\n");

. U$ L5 j" ~* r* l  D        return ret;
}
9 v1 s. B# j9 m1 z6 M/ T! t# _
static void __exit led_platform_exit(void)
8 E0 t" }& }! ]0 j" L{
        platform_device_unregister(&da850_evm_tl_leds_device);
0 m' _. J! N8 B3 c, g
& e7 Y- R6 T6 x6 U8 ^        printk(KERN_INFO "LED unregister!\n");
# f2 L  r% l. P. K}

0 q9 v- t: a1 |( r, dmodule_init(led_platform_init);
module_exit(led_platform_exit);
# y2 ?3 Y* o; h( ]- \6 x- R
MODULE_DESCRIPTION("Led platform driver");
" [- |5 h- y/ u  u( }" }MODULE_AUTHOR("Tronlong");
MODULE_LICENSE("GPL");
+ V0 Z/ T* g7 J0 b