linux硬盘job点灯,linux下点灯有关问题

清疚 2023-01-20 15:50 9阅读 0赞

C/C++ code这个驱动，请根据你的需要进行修改。

\#include

void \*R\_GPBCON;

void \*R\_GPBDAT;

static u32 resave\_gpbcon;

static u32 resave\_gpbdat;

static struct input\_dev my\_led\_dev;

static void iomap\_gpb(void)

R\_GPBCON = ioremap(0x56000010,0x4);

R\_GPBDAT = ioremap(0x56000014,0x4);

static void unmap\_gpb(void)

iounmap(R\_GPBCON);

iounmap(R\_GPBDAT);

static void init\_led\_reg(void)

u32 temp;

resave\_gpbcon = \_\_raw\_readl(R\_GPBCON);

resave\_gpbdat = \_\_raw\_readl(R\_GPBDAT);

temp = resave\_gpbcon & (~(0xff << 10));

temp |= ((0x1 << 10) | (0x1 << 12)| \\

(0x1 << 14) | (0x1 << 16));

\_\_raw\_writel(temp,R\_GPBCON);

temp = resave\_gpbdat | ( 0xf << 5);

\_\_raw\_writel(temp,R\_GPBDAT);

static void resave\_led\_reg(void)

\_\_raw\_writel(resave\_gpbcon,R\_GPBCON);

\_\_raw\_writel(resave\_gpbdat,R\_GPBDAT);

static int my\_led\_event(struct input\_dev \*dev, \\

unsigned int type, unsigned int code, int value)

u32 temp;

if (type != EV\_LED)

return -1;

switch (code) \{

case LED\_NUML:

break;

default:

return -1;

temp = \_\_raw\_readl(R\_GPBDAT);

temp &= (~(0xf << 5));

\_\_raw\_writel(temp | value,R\_GPBDAT);

return 0;

static int \_\_init my\_led\_init(void)

init\_input\_dev(&my\_led\_dev);

my\_led\_dev.evbit\[0\] = BIT(EV\_LED);

my\_led\_dev.ledbit\[0\] = BIT(LED\_NUML);

my\_led\_dev.event = my\_led\_event;

my\_led\_dev.name = "my\_led\_name";

my\_led\_dev.phys = "my\_led\_phys";

my\_led\_dev.id.bustype = BUS\_HOST;

my\_led\_dev.id.vendor = 0x001f;

my\_led\_dev.id.product = 0x0001;

my\_led\_dev.id.version = 0x0100;

iomap\_gpb();

init\_led\_reg();

input\_register\_device(&my\_led\_dev);

return 0;

static void \_\_exit my\_led\_exit(void)

resave\_led\_reg();

unmap\_gpb();

input\_unregister\_device(&my\_led\_dev);

module\_init(my\_led\_init);

module\_exit(my\_led\_exit);

下面为测试程序

\#include

int main(void)

struct input\_event my\_led\_event;

\_\_s32 ret;

\_\_s32 fb;

\_\_u32 loop;

\_\_u32 led\_buffer\[4\] = \{0xE,0xD,0xB,0x7\};

fb = open("/dev/input/event1",O\_RDWR);

if (fb < 0)\{

printf("open error!\\n");

exit(1);

my\_led\_event.type = EV\_LED;

my\_led\_event.code = LED\_NUML;

loop = 0;

while (1)\{

loop &= 0x3;

my\_led\_event.value = \*(led\_buffer + loop) << 5;

ret = write(fb,&my\_led\_event,sizeof(struct input\_event));

if (ret < 0)\{

printf("write error!\\n");

exit(1);

sleep(1);

loop ++;

return 0;

linux硬盘job点灯,linux下点灯有关问题

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