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# p( j4 v5 R& ^  d4 g. L#include <linux/init.h>
#include <linux/module.h>
6 i+ V+ c2 H9 r6 r0 b#include <linux/kernel.h>
8 ]3 |: H& e% [1 K/ y#include <linux/types.h>
" L; ^  i& p( `7 C+ ?$ C! m#include <linux/gpio.h>
8 s) o3 J* k" ?6 Z#include <linux/leds.h>
#include <linux/platform_device.h>
: x1 \' p% N/ c: j
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
6 |/ F1 d1 t$ Y2 E" j' s#include <mach/da8xx.h>
0 \0 z1 Y7 q/ ?' Z4 p( Q' M7 Y#include <mach/mux.h>

#define DA850_USER_LED0        GPIO_TO_PIN(0, 0)
# p( v) Q5 V: d; K#define DA850_USER_LED1        GPIO_TO_PIN(0, 5)
6 e5 l4 Q/ p$ w, E3 m, `8 T- x#define DA850_USER_LED2        GPIO_TO_PIN(0, 1)
; ?) O, q/ m! f8 f  G) H# Q#define DA850_USER_LED3        GPIO_TO_PIN(0, 2)
! k( @( ~( M- k  z3 m$ P
/* assign the tl som board LED-GPIOs*/
5 ^/ [% B$ r. v3 K4 q7 ]5 j* `6 zstatic const short da850_evm_tl_user_led_pins[] = {
% f6 u: s+ ^; f2 G        /* These pins are definition at <mach/mux.h> file */
        DA850_GPIO0_0, DA850_GPIO0_1, DA850_GPIO0_2, DA850_GPIO0_5,
' g9 c! K' Z% f& K        -1
};
) g& F! m* a  U* {- X$ o3 ^3 i
" g4 K( E$ }" }% Nstatic struct gpio_led da850_evm_tl_leds[] = {
        {
; n& t  F0 `* D: \                .active_low = 0,
/ v1 z! P0 P' m                .gpio = DA850_USER_LED0,
4 U7 d/ D0 P' P$ t                .name = "user_led0",
1 @$ F5 o8 x6 ^& h, B" a7 {                .default_trigger = "default-on",
# A, ?3 Y4 z% b5 k/ T        },
- z/ U0 F) B1 n- ]+ a, ?        {
* ~- {' C, ^2 O) `/ J: \                .active_low = 0,
/ L3 O5 z6 n: |9 x9 A                .gpio = DA850_USER_LED1,
                .name = "user_led1",
4 F5 |/ w) x, C4 B& ~                .default_trigger = "default-on",
        },
7 L+ b1 A+ N' E. p        {
; k$ x# ?. j# y2 i                .active_low = 0,
2 X4 n9 n" N! p0 ^4 W' _( N" V                .gpio = DA850_USER_LED2,
6 x7 t& F; m* m$ w                .name = "user_led2",
" J* e" q' ^8 P. i" @3 i1 ^                .default_trigger = "default-on",
: E0 {+ w0 u( _: H6 c        },
" Y5 `8 I% b4 d( @: t        {
7 _' p" a3 ~7 j% b                .active_low = 0,
& T/ Q) s  G; k* Y6 \5 }2 E- G3 L                .gpio = DA850_USER_LED3,
8 r8 `& M, u& g1 ^- K  R                .name = "user_led3",
9 [6 Q$ X; D6 t( ~                .default_trigger = "default-on",
1 M3 o  M, g; ^# b# A4 l$ J        },
8 y6 J% ?+ |% L* {0 R};
; e; s: T% B! L3 w6 E
3 l8 i7 F/ ?( `, r6 Gstatic struct gpio_led_platform_data da850_evm_tl_leds_pdata = {
7 O# L* q4 d8 Z% |! e, \; l        .leds = da850_evm_tl_leds,
2 \3 p' p+ R- K2 u3 h5 i        .num_leds = ARRAY_SIZE(da850_evm_tl_leds),
4 z6 D/ m) T# k: X};

6 k2 U5 p3 x' Jstatic void led_dev_release(struct device *dev)
  x  }9 H0 h1 m{
* P: `  S0 [, \" U& H  t) @};
+ `+ M* v6 X4 G* M* C. D; g
( J) I7 N9 }. f* v7 Rstatic struct platform_device da850_evm_tl_leds_device = {
        .name                = "leds-gpio",
' p! Y. w/ Y5 @, b9 w! c        .id                = 1,
- T: J# J' Z* s- Q7 V* m# c. K/ i        .dev = {
3 H: K/ A1 V4 Y# c, r1 S                .platform_data = &da850_evm_tl_leds_pdata,
                .release = led_dev_release,
5 a$ ^3 W2 Q) X( T! m2 ^. Z        }
};
( X2 U1 N$ Z% H! r$ N
3 g0 t/ N9 K" v, d! W/ ~3 }% Ostatic int __init led_platform_init(void)
{
0 c" U5 x" W! u. _        int ret;
" p( n& z- e, w9 @#if 0
        ret = davinci_cfg_reg_list(da850_evm_tl_user_led_pins);
        if (ret)
9 m3 ~! n( s' m                pr_warning("da850_evm_tl_leds_init : User LED mux failed :"
                                "%d\n", ret);
$ o/ E# i( ^! \- _#endif
        ret = platform_device_register(&da850_evm_tl_leds_device);
        if (ret)
; ?+ S- Q9 n% l) \+ H6 h: ]                pr_warning("Could not register som GPIO expander LEDS");
        else
                printk(KERN_INFO "LED register sucessful!\n");

        return ret;
; x7 }4 y0 c! ]3 T8 S}
( D0 c& a# z- o% I  m
5 Q+ Y8 P* `- \, a" V) gstatic void __exit led_platform_exit(void)
{
        platform_device_unregister(&da850_evm_tl_leds_device);

        printk(KERN_INFO "LED unregister!\n");
}
( |/ t. a+ D) a9 {5 e* z
! z2 i6 f" W5 {  Mmodule_init(led_platform_init);
3 o# W1 B% z7 M- k6 \% u' Cmodule_exit(led_platform_exit);

4 K; Y$ X, p' E" a3 sMODULE_DESCRIPTION("Led platform driver");
MODULE_AUTHOR("Tronlong");
MODULE_LICENSE("GPL");

' }% F7 k+ b, x2 a" P5 W