/*************************************************************************
	>?File?Name:?pmw.c
	>?Author:?BlueMoon
	>?Mail:?Leeruile@outlook.com
	>?Created?Time:?2018年08月28日?星期二?14時17分26秒
?************************************************************************/

#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include“pmw.h“


#define?TCFG0????????0x00
#define?TCFG1????????0x04
#define?TCON?????????0x08
#define?TCNTB1???????0x0c
#define?TCMPB1???????0x10


//主次設備號定義
#define???????????????PMW_MAJOR?????410
#define???????????????PMW_MIJOR?????0
#define???????????????PMW_NUM???????1


dev_t?dev_ID;
void?auto_create_node（dev_t?dev_ID）;
struct?_pmw
{
????unsigned?int?*gpdcon;
????void?__iomem?*timer_base;
????struct?cdev?cdev;
}*pmw;

//定義字符設備
//定義寄存器變量
struct?resource*?????????pmw_con;
struct?resource*?????????pmw_timer_base;

unsigned?int*????????????gpdcon;
unsigned?int*????????????gpddat;

struct?class*????????????pmw_class;
int?ret;
#define????dev_node_name??“PMW“


static?int?pmw_open（struct?inode?*inodestruct?file?*file）
{
????writel（（readl（pmw->gpdcon）?&?~0xf）?|?0x2pmw->gpdcon）;
????writel（readl（pmw->timer_base?+?TCFG0）?|?0xffpmw->timer_base?+?TCFG0）;
????writel（（readl（pmw->timer_base?+?TCFG1）?&?~0xf）?|?0x2?pmw->timer_base?+?TCFG1）;
	writel（300?pmw->timer_base?+?TCNTB1）;
	writel（150?pmw->timer_base?+?TCMPB1）;
	writel（（readl（pmw->timer_base?+?TCON）?&?~0x1f）?|?0x2?pmw->timer_base?+?TCON）;
	//writel（（readl（pwm->timer_base?+?TCON）?&?~（0xf?<timer_base?+?TCON）;
	return?0;
}

static?int?pmw_release（struct?inode?*inode?struct?file?*file）
{
	writel（readl（pmw->timer_base?+?TCON）?&?~0xf?pmw->timer_base?+?TCON）;
	return?0;
}

static?long?pmw_ioctl（struct?file?*file?unsigned?int?cmd?unsigned?long?arg）
{
	int?data?=?0;

	if?（_IOC_TYPE（cmd）?!=?‘K‘）
		return?-ENOTTY;

	if?（_IOC_NR（cmd）?>?3）
		return?-ENOTTY;

	if?（_IOC_DIR（cmd）?==?_IOC_WRITE）
		if?（copy_from_user（&data?（void?*）arg?sizeof（data）））
			return?-EFAULT;

	switch（cmd）
	{
	????case?PWM_ON:
		????writel（（readl（pmw->timer_base?+?TCON）?&?~0x1f）?|?0x9?pmw->timer_base?+?TCON）;
		????break;
	????case?PWM_OFF:
		????writel（readl（pmw->timer_base?+?TCON）?&?~0x1f?pmw->timer_base?+?TCON）;
		????break;
	????case?SET_PRE:
		????writel（readl（pmw->timer_base?+?TCON）?&?~0x1f?pmw->timer_base?+?TCON）;
		????writel（（readl（pmw->timer_base?+?TCFG0）?&?~0xff）?|?（data?&?0xff）?pmw->timer_base?+?TCFG0）;
	????	writel（（readl（pmw->timer_base?+?TCON）?&?~0x1f）?|?0x9?pmw->timer_base?+?TCON）;
		????break;
	????case?SET_CNT:
		????writel（data?pmw->timer_base?+?TCNTB1）;
		????writel（data?>>?1?pmw->timer_base?+?TCMPB1）;
		????break;
	}

	return?0;
}

//定義操作函數
static?struct?file_operations?pmw_fops?=?{
????.owner????=?THIS_MODULE
????.open?????=?pmw_open
????.release??=?pmw_release
????.unlocked_ioctl