程序注解

rgf

求大神给下面的程序做注解，请稍详细些，谢谢。
7 X  s& K: k+ G) T! Q#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
* L1 v' }1 R9 Y#include <linux/gpio.h>
; h+ p, |% @2 P#include <linux/leds.h>
/ T% a( e. [- w#include <linux/platform_device.h>
3 y' }* y6 G3 N' u+ {' n5 Q' }0 T* m5 `
2 ~: K8 Q4 b4 Y( c2 ]+ o/ P#include <asm/mach-types.h>
#include <asm/mach/arch.h>
- m' G# g  o0 c, ?0 Y% O: i9 F& _: a) D#include <mach/da8xx.h>
#include <mach/mux.h>
1 `  A4 h" f+ A! L9 T% ^+ Y
#define DA850_USER_LED0        GPIO_TO_PIN(0, 0)
; ^2 Z# s! N; @9 ], Z6 ?" Q#define DA850_USER_LED1        GPIO_TO_PIN(0, 5)
#define DA850_USER_LED2        GPIO_TO_PIN(0, 1)
) n9 }5 J: H' J$ W& g#define DA850_USER_LED3        GPIO_TO_PIN(0, 2)
/ a* P0 T2 E' ]
/* assign the tl som board LED-GPIOs*/
0 V1 r# h) h/ g  W/ Q9 ystatic 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
};
# }/ x8 S1 b" m3 j7 n5 ~3 C
6 F) s+ t2 C! x3 s2 B8 u+ e1 mstatic struct gpio_led da850_evm_tl_leds[] = {
        {
7 w2 g- X+ Z/ V6 R/ p) o                .active_low = 0,
                .gpio = DA850_USER_LED0,
" p. e& T5 B4 O9 }- u& x                .name = "user_led0",
                .default_trigger = "default-on",
        },
4 E* Q, e- k3 I6 r/ p        {
                .active_low = 0,
/ |+ o4 |$ F% y( u- J, b% m                .gpio = DA850_USER_LED1,
, Z" R$ b* t" v# @, l                .name = "user_led1",
                .default_trigger = "default-on",
4 B, C- @7 H, i: n6 }4 K        },
        {
                .active_low = 0,
3 E4 D6 a& Y  s# d$ H                .gpio = DA850_USER_LED2,
                .name = "user_led2",
  S; E# W6 M: q$ Y# y5 `! V) V3 {                .default_trigger = "default-on",
0 r: O: b8 F( w' E% N        },
        {
" S8 B) ?* u* K- s. _* M                .active_low = 0,
( \& |5 Q( j3 v+ B                .gpio = DA850_USER_LED3,
                .name = "user_led3",
6 S. Z: o; B% p% h                .default_trigger = "default-on",
" C8 ~! R  b  k* z+ ^, F7 U        },
};
: A; j( W7 K4 z+ |; w, H$ O  v
static struct gpio_led_platform_data da850_evm_tl_leds_pdata = {
* b- ~7 d3 F% ^9 p% d        .leds = da850_evm_tl_leds,
0 S' Q- ?5 U: a) V! f        .num_leds = ARRAY_SIZE(da850_evm_tl_leds),
8 i3 B. i' z8 b0 p+ |" h& s6 [; [};
3 t! \* J/ A' P, S4 I, K
9 ?  \% F9 v0 h, vstatic void led_dev_release(struct device *dev)
/ M! [" a) @" \* T" y6 ]- h- C  c% r{
" F; L2 c5 p' r" ^. k5 v! y};
/ A; h: q1 M2 `, Y
- U: ~  k: S  |( P% Rstatic struct platform_device da850_evm_tl_leds_device = {
        .name                = "leds-gpio",
2 x2 S0 o4 P" Q. M5 z" p        .id                = 1,
        .dev = {
  c  ]2 `' W" N6 n- N3 f  a6 R                .platform_data = &da850_evm_tl_leds_pdata,
                .release = led_dev_release,
' v0 S/ u- w4 x% n- ^. |2 l        }
};

static int __init led_platform_init(void)
{
        int ret;
5 ~- U+ }: a* @/ T) R" e#if 0
        ret = davinci_cfg_reg_list(da850_evm_tl_user_led_pins);
        if (ret)
                pr_warning("da850_evm_tl_leds_init : User LED mux failed :"
                                "%d\n", ret);
+ \& u- E9 T0 [) ]& T& h#endif
: h. N1 g# A, U3 b2 y        ret = platform_device_register(&da850_evm_tl_leds_device);
        if (ret)
3 Z( r; |8 v" P% h0 ?1 M                pr_warning("Could not register som GPIO expander LEDS");
( @8 X. a0 p* }9 b" C/ T8 C        else
- G4 G# [+ N8 s( ^5 W* p                printk(KERN_INFO "LED register sucessful!\n");

        return ret;
  I/ Y" a( H0 u! L2 V}

: Z, t- p' _2 b9 {7 j' @: n$ A; rstatic void __exit led_platform_exit(void)
{
4 y& ^& k% D, Q8 Z5 k# f/ k        platform_device_unregister(&da850_evm_tl_leds_device);

        printk(KERN_INFO "LED unregister!\n");
}
9 J% ^7 Y. q9 ]2 }5 E, a% ^& _
module_init(led_platform_init);
module_exit(led_platform_exit);
$ y, _0 M5 R8 J+ p2 o- [+ ?
MODULE_DESCRIPTION("Led platform driver");
1 k7 X3 N. f7 WMODULE_AUTHOR("Tronlong");
( Q) h: m: Q2 a" U3 p8 oMODULE_LICENSE("GPL");
$ M& z6 X% ]0 ~1 X' O
- ]! {) S  l6 N5 j$ s