#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
?



MODULE_LICENSE（“GPL“）;

#define?DEVICE_NAME?“axi_timer_0“


#define?XIL_AXI_TIMER_TCSR_OFFSET		0x0
#define?XIL_AXI_TIMER_TLR_OFFSET		0x4
#define?XIL_AXI_TIMER_TCR_OFFSET		0x8
#define?XIL_AXI_TIMER_CSR_INT_OCCURED_MASK	0x00000100

#define?XIL_AXI_TIMER_CSR_CASC_MASK		0x00000800
#define?XIL_AXI_TIMER_CSR_ENABLE_ALL_MASK	0x00000400
#define?XIL_AXI_TIMER_CSR_ENABLE_PWM_MASK	0x00000200
#define?XIL_AXI_TIMER_CSR_INT_OCCURED_MASK	0x00000100
#define?XIL_AXI_TIMER_CSR_ENABLE_TMR_MASK	0x00000080
#define?XIL_AXI_TIMER_CSR_ENABLE_INT_MASK	0x00000040
#define?XIL_AXI_TIMER_CSR_LOAD_MASK		0x00000020
#define?XIL_AXI_TIMER_CSR_AUTO_RELOAD_MASK	0x00000010
#define?XIL_AXI_TIMER_CSR_EXT_CAPTURE_MASK	0x00000008
#define?XIL_AXI_TIMER_CSR_EXT_GENERATE_MASK	0x00000004
#define?XIL_AXI_TIMER_CSR_DOWN_COUNT_MASK	0x00000002
#define?XIL_AXI_TIMER_CSR_CAPTURE_MODE_MASK	0x00000001

#define?TIMER_CNT	0xE8000000



static?struct?platform_device?*pdev;
?
void?*dev_virtaddr;
static?int?int_cnt;



static?int?xilaxitimer_open（struct?inode?*?inode??struct?file?*?filp）
{
??return?0;
}

static?int?xilaxitimer_release（struct?inode?*?inode?struct?file?*filp）
{
??return?0;
}

static?int?xilaxitimer_read（struct?file?*filp?char?*buffer?size_t?length?loff_t?*?offset）
{
??
??return?0;
}



static?const?struct?file_operations?xilaxitimer_fops?=
{
??.owner?=?THIS_MODULE
??.open?=?xilaxitimer_open
??.release?=?xilaxitimer_release
??.read?=?xilaxitimer_read
};

static?struct?miscdevice?xilaxitimer_dev?=
{
??.minor?=?MISC_DYNAMIC_MINOR
??.name?=?DEVICE_NAME
??.fops?=?&xilaxitimer_fops
};


static?irqreturn_t?xilaxitimer_isr（int?irqvoid*dev_id）		
{??????
??unsigned?int?data;
??
??/*?
???*?Check?Timer?Counter?Value
???*/
??data?=?ioread32（dev_virtaddr?+?XIL_AXI_TIMER_TCR_OFFSET）;
??printk（“xilaxitimer_isr:?Interrupt?Occurred?!?Timer?Count?=?0x%08X\n“data）;
??
??/*?
???*?Clear?Interrupt
???*/
??data?=?ioread32（dev_virtaddr?+?XIL_AXI_TIMER_TCSR_OFFSET）;
??iowrite32（data?|?XIL_AXI_TIMER_CSR_INT_OCCURED_MASK
	????dev_virtaddr?+?XIL_AXI_TIMER_TCSR_OFFSET）;
??
??/*?
???*?Disable?Timer?after?100?Interrupts
???*/
??int_cnt++;
??
??if?（int_cnt>=100）
????{
??????printk（“xilaxitimer_isr:?100?interrupts?have?been?occurred.?Disabling?timer“）;
??????data?=?ioread32（dev_virtaddr?+?XIL_AXI_TIMER_TCSR_OFFSET）;
??????iowrite32（data?&?~（XIL_AXI_TIMER_CSR_ENABLE_TMR_MASK）
		dev_virtaddr?+?XIL_AXI_TIMER_TCSR_OFFSET）;
????}

?
??return?IRQ_HANDLED;
}





static?const?struct?of_device_id?xilaxitimer_of_match[];

static?int?xilaxitimer_probe（struct?platform_device?*pdev）
{
????struct?devi

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????432??2018-10-09?15:42??Linux4.0版??zynq?Axitimer自編驅動源碼\Makefile

?????文件???????5370??2018-10-16?13:23??Linux4.0版??zynq?Axitimer自編驅動源碼\xilaxitimer.c

?????目錄??????????0??2018-10-16?13:52??Linux4.0版??zynq?Axitimer自編驅動源碼

-----------?---------??----------?-----??----

?????????????????5802????????????????????3