mirror of
https://github.com/gatieme/LDD-LinuxDeviceDrivers.git
synced 2026-09-25 14:53:35 +08:00
android驱动代码测试...
This commit is contained in:
gatieme
@@ -0,0 +1,31 @@
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#direntorys
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HELLO_DIR=hello
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CPLD_DIR=cpld
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FPGA_DIR=fpga
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TEST_MODULE_DIR=test_module
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DIRS=$(HELLO_DIR) $(CPLD_DIR) $(FPGA_DIR) $(TEST_MODULE_DIR)
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SUBDIRS=$(DIRS)
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.PHONY:all $(SUBDIRS)
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all: $(SUBDIRS)
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$(SUBDIRS):
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$(MAKE) -C $@
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@echo "=======BUILD $@ SUCCESS======="
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#all :
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# for i in $(DIRS); do \
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# (cd $$i && echo "making $$i" && $(MAKE) ) || exit 1; \
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# done
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clean:
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for i in $(DIRS); do \
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(cd $$i && echo "cleaning $$i" && $(MAKE) clean) || exit 1; \
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done
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install :
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for i in $(DIRS); do \
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(cd $$i && echo "install $$i" && $(MAKE) install) || exit 1; \
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done
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@@ -0,0 +1,85 @@
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# ------------------------------------------------------------------------------
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#
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# Makefile for the LDD-LinuxDeviceDrivers.
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#
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# Author: gatieme
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# Create: 2016-07-29 15:50:46
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# Last modified: 2016-07-29 16:10:29
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# Description:
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# This program is loaded as a kernel(v2.6.18 or later) module.
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# Use "make install" to load it into kernel.
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# Use "make remove" to remove the module out of kernel.
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#
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# ------------------------------------------------------------------------------
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# my driver description
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DRIVER_VERSION := "1.0.0"
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DRIVER_AUTHOR := "Gatieme @ AderStep Inc..."
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DRIVER_DESC := "Linux input module for Elo MultiTouch(MT) devices"
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DRIVER_LICENSE := "Dual BSD/GPL"
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MODULE_NAME := ccpld
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ifneq ($(KERNELRELEASE),)
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#CFG_FLAGS += -O2 -I./
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#EXTRA_CFLAGS += $(C_FLAGS) $(CFG_INC) $(CFG_INC)
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RESMAIN_CORE_OBJS := cpld.o
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RESMAIN_GLUE_OBJS := slaveSerial.o
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ccpld-objs := $(RESMAIN_GLUE_OBJS) $(RESMAIN_CORE_OBJS)
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obj-m := $(MODULE_NAME).o
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else
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CURRENT_PATH ?= $(shell pwd)
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ifeq ($(ARCH),arm64)
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LINUX_KERNEL_PATH ?= /home/rockchip/rk3399/Android/7.1/android/kernel
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else
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LINUX_KERNEL ?= $(shell uname -r)
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LINUX_KERNEL_PATH ?= /lib/modules/$(LINUX_KERNEL)/build
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endif
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modules:
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make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) modules
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modules_install:
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make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) modules_install
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insmod:
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sudo insmod $(MODULE_NAME).ko
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reinsmod:
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sudo rmmod $(MODULE_NAME)
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sudo insmod $(MODULE_NAME).ko
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github:
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cd $(ROOT) && make github
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rmmod:
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sudo rmmod $(MODULE_NAME)
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test :
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sudo ../injector/memInjector -l stack -m random -t word_0 --time 1 --timeout 3 -p 1
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clean:
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make -C $(LINUX_KERNEL_PATH) M=$(PWD) clean
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rm -f modules.order Module.symvers Module.markers
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.PHNOY:
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modules modules_install clean
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endif
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@@ -0,0 +1,209 @@
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/*
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CPLD test
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byTX
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2013.1.31：add cpld_ioctl
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/module.h>
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//#include <linux/serial_core.h>
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//for file opration
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#include <linux/fs.h>
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//for cdev create
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#include <linux/cdev.h>
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//#include <linux/gpio.h>
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//#include <linux/clk.h>
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//#include <linux/delay.h>
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//#include <linux/usb/ch9.h>
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//#include <linux/pwm_backlight.h>
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//#include <linux/spi/spi.h>
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//#include <linux/gpio_keys.h>
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//copy_to_user
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#include <linux/uaccess.h>
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//class_create
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#include <linux/device.h>
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//#include <asm/mach/arch.h>
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//#include <asm/mach/map.h>
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//#include <asm/setup.h>
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//#include <asm/mach-types.h>
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//ioremap defined here
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#include <asm/io.h>
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#include "slaveSerial.h"
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//#include <plat/s5pv210.h>
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#include <linux/version.h>
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_AUTHOR("Gatieme");
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MODULE_DESCRIPTION("hello world");
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static void __iomem *io_base;
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struct cdev *cpld_cdev;
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struct class *cpld_class;
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dev_t devid;
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static int cpld_open(struct inode *inode, struct file *file)
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{
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//可配置eint18，并复位cpld
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printk("cpld open\n");
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return 0;
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}
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//read ,do not change f_pos
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ssize_t cpld_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos)
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{
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unsigned short int tmp;
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#if DEBUG_PRINT
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printk("f_pos=0x%x\n",*(unsigned int*)f_pos);
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#endif
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tmp=ioread16(io_base+(*f_pos));
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#if DEBUG_PRINT
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printk("cpld read =0x%x\n",tmp);
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#endif
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//return copy_to_user(buf,(char *)&tmp,sizeof(unsigned short int));
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*(unsigned short int*)buf=tmp;
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return 2;//always read 2bytes
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}
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//write ,do not change f_pos
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ssize_t cpld_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos)
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{
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#if DEBUG_PRINT
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printk("f_pos=0x%x count=%d\n",*(unsigned int*)f_pos,count);
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#endif
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if(count==2)
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{
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iowrite16(*(unsigned short int*)buf,io_base+(*f_pos));
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#if DEBUG_PRINT
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printk("write data=0x%x\n",*(unsigned short int*)buf);
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#endif
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return count;
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}
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/*
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else if(count==FPGA_BURST_SIZE)//多字节连续写入
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{
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for(i=0;i<count;i++)
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{
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#if DEBUG_PRINT
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printk("write data=0x%x,addr=0x%x\n",*(unsigned short int*)(buf+2*i),i*2);
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#endif
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iowrite16(*(unsigned short int*)(buf+2*i),io_base+i*2);
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}
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return count;
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}
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*/
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else
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return 0;
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}
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//set the offset
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loff_t cpld_llseek (struct file *filp, loff_t offset, int whence)
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{
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loff_t new_pos;
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if(offset>=0 && offset<CPLD_SIZE)
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new_pos=offset;
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else
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new_pos=0;
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#if DEBUG_PRINT
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printk("set cpld offset to 0x%x\n",(unsigned int)new_pos);
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#endif
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filp->f_pos = new_pos;
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return new_pos;
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}
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36)
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static int cpld_ioctl(struct inode *indoe, struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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#else
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//long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
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//long (*compat_ioctl) (struct file *file, unsigned int cmd, unsigned long arg)
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static long cpld_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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//struct inode *inode = file->f_dentry->d_inode;
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struct inode *inode = inode = file_inode(file);
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#endif
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switch(cmd)
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{
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case CMD_START_SHIFT:
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shiftWordOut((unsigned short int)arg,io_base);
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break;
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case CMD_START_PROG:
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set_prog_b(io_base,0); //?????? 这函数功能-设置boot值，io_base+REG_PROG_B_OFFSET
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set_prog_b(io_base,0);
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set_prog_b(io_base,1);
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break;
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case CMD_CHECK_DONE:
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return check_done(io_base); //这check_done在slaveSerial.c中，检查是否下载完成
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case CMD_SET_LED:
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iowrite16((arg>0)?SET_LED_ON:SET_LED_OFF, io_base+REG_LED_OFFSET);
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break;
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case CMD_SEND_LOW_BYTE:
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shiftByteOut((char)arg,io_base);
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break;
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case CMD_SEND_HIGH_BYTE:
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shiftByteOut((char)(arg>>8),io_base);
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break;
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case CMD_CHECK_INIT:
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return get_init_bit(io_base);
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break;
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case CMD_SET_CONTROL:
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iowrite16((unsigned short int)arg,io_base+REG_CONTROL_OFFSET); ///?????REG_CONTROL_OFFSET在哪里定义的？arg是要设置的值，第二个参数是地址
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break;
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case CMD_SET_DATA:
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iowrite16((unsigned short int)arg,io_base+REG_DATA_OFFSET);
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break;
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default:
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break;
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}
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return 0;
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}
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static struct file_operations cpld_fops = {
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.owner = THIS_MODULE,
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.open = cpld_open,
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.read = cpld_read,
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.write = cpld_write,
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.llseek = cpld_llseek,
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36)
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.ioctl = cpld_ioctl,
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#else
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.compat_ioctl = cpld_compat_ioctl,
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#endif
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};
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static int __init cpld_init(void)
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{
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//创建字符设备
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cpld_cdev=cdev_alloc();
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cdev_init(cpld_cdev, &cpld_fops);
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cpld_cdev->owner = THIS_MODULE;
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alloc_chrdev_region(&devid, 0, 1, "cpld");
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cdev_add(cpld_cdev,devid,1);
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cpld_class = class_create(THIS_MODULE,"cpld_class");
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device_create(cpld_class, NULL, devid, NULL,"cpld");
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//申请内存
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io_base=ioremap(CPLD_BASE,CPLD_SIZE);
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if(io_base==0)
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printk("failed to ioremap cpld\n");
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else
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printk("cpld test reg.=0x%x\n",ioread16(io_base+REG_TEST_OFFSET));
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printk("CPLD initialized.\n");
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return 0;
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}
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static void __exit cpld_exit(void)
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{
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unregister_chrdev_region(devid,1);
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device_destroy(cpld_class , devid);
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class_destroy(cpld_class);
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cdev_del(cpld_cdev);
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iounmap(io_base);
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printk("cpld exit\n");
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}
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module_init(cpld_init);
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module_exit(cpld_exit);
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@@ -0,0 +1,110 @@
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/*
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2013.1.31byTX
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*/
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#include <linux/kernel.h>␍#include <asm/io.h>
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#include "slaveSerial.h"
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/*
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assert cclk when value>1
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*/
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void set_cclk(void *io_base,int value)
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{
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iowrite16((value>0)?1:0,io_base+REG_CCLK_OFFSET);
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}
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/*
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assert din when value>0
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*/
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void set_din(void *io_base,int value)
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{
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iowrite16((value>0)?1:0,io_base+REG_DIN_OFFSET);
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}
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/*
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assert prog_b when value>0
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*/
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void set_prog_b(void *io_base,int value)
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{
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iowrite16((value>0)?1:0,io_base+REG_PROG_B_OFFSET);
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}
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/*
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*/
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unsigned short int get_stat(void *io_base)
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{
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return ioread16(io_base+REG_STAT_OFFSET);
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}
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//返回pin状态
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int get_done_bit(void *io_base)
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{
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return ((get_stat(io_base)& STAT_DONE_BIT)>0)?1:0;
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}
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//返回pin状态
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int get_init_bit(void *io_base)
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{
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return ((get_stat(io_base)& STAT_INIT_BIT)>0)?1:0;
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}
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int check_done(void *io_base)
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{
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int i;
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int done=0;
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int init=1;
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//check init first!!
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if(0==get_init_bit(io_base))
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{
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printk("init=0,so failed\n");
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return INFOR_DONE_FAILED;
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}
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while((done==0) && (init==1))
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{
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//Apply additional CCLK pulse until DONE=1
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set_cclk(io_base,0);
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set_cclk(io_base,1);
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done=get_done_bit(io_base);
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printk("done == 0x%x\n",(unsigned int)done);
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init=get_init_bit(io_base);
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}
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if(done>0)
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{
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//printk("done=1, succeed!\n");
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for(i=0;i<8;i++)
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{
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set_cclk(io_base,0);
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set_cclk(io_base,1);
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}
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return INFOR_DONE_SUCCEED;
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}
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else
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{
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printk("failed!done=%d,init=%d\n",done, init);
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return INFOR_DONE_FAILED;
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}
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}
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void shiftWordOut(unsigned short int data, void *io_base)
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{
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||||
int i;
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||||
//low byte
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for(i=0;i<8;i=i+1)␍ {
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||||
set_cclk(io_base,0);//set cclk low
|
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set_din(io_base,(data&(0x0080>>i))?1:0);
|
||||
set_cclk(io_base,1);//set cclk high
|
||||
}
|
||||
//high byte
|
||||
for(i=0;i<8;i=i+1)
|
||||
{
|
||||
set_cclk(io_base,0);//set cclk low
|
||||
set_din(io_base,(data&(0x8000>>i))?1:0);
|
||||
set_cclk(io_base,1);//set cclk high
|
||||
}
|
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}
|
||||
void shiftByteOut(char data, void *io_base)
|
||||
{
|
||||
int i;
|
||||
for(i=0;i<8;i=i+1)␍ {
|
||||
set_cclk(io_base,0);//set cclk low
|
||||
set_din(io_base,(data&(0x80>>i))?1:0);
|
||||
set_cclk(io_base,1);//set cclk high
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
@@ -0,0 +1,109 @@
|
||||
/*
|
||||
2013.1.31byTX
|
||||
*/
|
||||
#include <linux/kernel.h>␍#include <asm/io.h>
|
||||
#include "slaveSerial.h"
|
||||
|
||||
|
||||
/*
|
||||
assert cclk when value>1
|
||||
*/
|
||||
void set_cclk(void *io_base,int value)
|
||||
{
|
||||
iowrite16((value>0)?1:0,io_base+REG_CCLK_OFFSET);
|
||||
}
|
||||
/*
|
||||
assert din when value>0
|
||||
*/
|
||||
void set_din(void *io_base,int value)
|
||||
{
|
||||
iowrite16((value>0)?1:0,io_base+REG_DIN_OFFSET);
|
||||
}
|
||||
/*
|
||||
assert prog_b when value>0
|
||||
*/
|
||||
void set_prog_b(void *io_base,int value)
|
||||
{
|
||||
iowrite16((value>0)?1:0,io_base+REG_PROG_B_OFFSET);
|
||||
}
|
||||
/*
|
||||
|
||||
*/
|
||||
unsigned short int get_stat(void *io_base)
|
||||
{
|
||||
return ioread16(io_base+REG_STAT_OFFSET);
|
||||
}
|
||||
//返回pin状态
|
||||
int get_done_bit(void *io_base)
|
||||
{
|
||||
return ((get_stat(io_base)& STAT_DONE_BIT)>0)?1:0;
|
||||
}
|
||||
//返回pin状态
|
||||
int get_init_bit(void *io_base)
|
||||
{
|
||||
return ((get_stat(io_base)& STAT_INIT_BIT)>0)?1:0;
|
||||
}
|
||||
int check_done(void *io_base)
|
||||
{
|
||||
int i;
|
||||
int done=0;
|
||||
int init=1;
|
||||
//check init first!!
|
||||
if(0==get_init_bit(io_base))
|
||||
{
|
||||
printk("init=0,so failed\n");
|
||||
return INFOR_DONE_FAILED;
|
||||
}
|
||||
while((done==0) && (init==1))
|
||||
{
|
||||
//Apply additional CCLK pulse until DONE=1
|
||||
set_cclk(io_base,0);
|
||||
set_cclk(io_base,1);
|
||||
done=get_done_bit(io_base);
|
||||
init=get_init_bit(io_base);
|
||||
}
|
||||
if(done>0)
|
||||
{
|
||||
//printk("done=1, succeed!\n");
|
||||
for(i=0;i<8;i++)
|
||||
{
|
||||
set_cclk(io_base,0);
|
||||
set_cclk(io_base,1);
|
||||
}
|
||||
return INFOR_DONE_SUCCEED;
|
||||
}
|
||||
else
|
||||
{
|
||||
printk("failed!done=%d,init=%d\n",done, init);
|
||||
return INFOR_DONE_FAILED;
|
||||
}
|
||||
}
|
||||
void shiftWordOut(unsigned short int data, void *io_base)
|
||||
{
|
||||
int i;
|
||||
//low byte
|
||||
for(i=0;i<8;i=i+1)␍ {
|
||||
set_cclk(io_base,0);//set cclk low
|
||||
set_din(io_base,(data&(0x0080>>i))?1:0);
|
||||
set_cclk(io_base,1);//set cclk high
|
||||
}
|
||||
//high byte
|
||||
for(i=0;i<8;i=i+1)
|
||||
{
|
||||
set_cclk(io_base,0);//set cclk low
|
||||
set_din(io_base,(data&(0x8000>>i))?1:0);
|
||||
set_cclk(io_base,1);//set cclk high
|
||||
}
|
||||
}
|
||||
void shiftByteOut(char data, void *io_base)
|
||||
{
|
||||
int i;
|
||||
for(i=0;i<8;i=i+1)␍ {
|
||||
set_cclk(io_base,0);//set cclk low
|
||||
set_din(io_base,(data&(0x80>>i))?1:0);
|
||||
set_cclk(io_base,1);//set cclk high
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
@@ -0,0 +1,50 @@
|
||||
/*
|
||||
create 2013.1.31byTX
|
||||
|
||||
*/
|
||||
#define CPLD_SIZE 256
|
||||
#define CPLD_BASE 0x80000000
|
||||
|
||||
#define REG_TEST_OFFSET 0
|
||||
|
||||
#define REG_CCLK_OFFSET 0x2
|
||||
#define REG_PROG_B_OFFSET 0x4
|
||||
#define REG_DIN_OFFSET 0x6
|
||||
#define REG_STAT_OFFSET 0x8
|
||||
#define STAT_DONE_BIT 0x2
|
||||
#define STAT_INIT_BIT 0x1
|
||||
#define REG_LED_OFFSET 0xa
|
||||
#define REG_CONTROL_OFFSET 0xc
|
||||
#define REG_DATA_OFFSET 0x20
|
||||
|
||||
#define REG_FPGA_BURST_OFFSET 0x20
|
||||
#define FPGA_BURST_SIZE 0x10 //words
|
||||
|
||||
#define INFOR_DONE_SUCCEED 0
|
||||
#define INFOR_DONE_FAILED 1
|
||||
#define INFOR_INIT_SUCCEED 1 //new,diff as done
|
||||
#define INFOR_INIT_FAILED 0 //new
|
||||
|
||||
#define DEBUG_PRINT 0
|
||||
|
||||
#define CMD_START_PROG 0x10
|
||||
#define CMD_START_SHIFT 0x11
|
||||
#define CMD_CHECK_DONE 0x12
|
||||
#define CMD_SET_LED 0x13
|
||||
#define CMD_SEND_HIGH_BYTE 0x14 //new
|
||||
#define CMD_SEND_LOW_BYTE 0x15 //new
|
||||
#define CMD_CHECK_INIT 0x16
|
||||
#define CMD_SET_CONTROL 0x17
|
||||
#define CMD_SET_DATA 0x18
|
||||
#define SET_LED_ON 0
|
||||
#define SET_LED_OFF 1
|
||||
void set_cclk(void *io_base,int value);
|
||||
void set_din(void *io_base,int value);
|
||||
void set_prog_b(void *io_base,int value);
|
||||
unsigned short int get_stat(void *io_base);
|
||||
int get_done_bit(void *io_base);
|
||||
int get_init_bit(void *io_base);
|
||||
int check_done(void *io_base);
|
||||
void shiftWordOut(unsigned short int data, void *io_base);
|
||||
void shiftByteOut(char data, void *io_base);
|
||||
|
||||
@@ -0,0 +1,79 @@
|
||||
# ------------------------------------------------------------------------------
|
||||
#
|
||||
# Makefile for the LDD-LinuxDeviceDrivers.
|
||||
#
|
||||
# Author: gatieme
|
||||
# Create: 2016-07-29 15:50:46
|
||||
# Last modified: 2016-07-29 16:10:29
|
||||
# Description:
|
||||
# This program is loaded as a kernel(v2.6.18 or later) module.
|
||||
# Use "make install" to load it into kernel.
|
||||
# Use "make remove" to remove the module out of kernel.
|
||||
#
|
||||
# ------------------------------------------------------------------------------
|
||||
|
||||
|
||||
# my driver description
|
||||
DRIVER_VERSION := "1.0.0"
|
||||
DRIVER_AUTHOR := "Gatieme @ AderStep Inc..."
|
||||
DRIVER_DESC := "Linux input module for Elo MultiTouch(MT) devices"
|
||||
DRIVER_LICENSE := "Dual BSD/GPL"
|
||||
|
||||
|
||||
MODULE_NAME := fpga
|
||||
|
||||
EXTRA_CFLAGS += -g
|
||||
|
||||
|
||||
ifneq ($(KERNELRELEASE),) # kernelspace
|
||||
|
||||
obj-m += $(MODULE_NAME).o
|
||||
|
||||
else # userspace
|
||||
|
||||
|
||||
CURRENT_PATH ?= $(shell pwd)
|
||||
ifeq ($(ARCH),arm64)
|
||||
LINUX_KERNEL_PATH ?= /home/rockchip/rk3399/Android/7.1/android/kernel
|
||||
else
|
||||
LINUX_KERNEL ?= $(shell uname -r)
|
||||
LINUX_KERNEL_PATH ?= /lib/modules/$(LINUX_KERNEL)/build
|
||||
endif
|
||||
|
||||
CURRENT_PATH := $(shell pwd)
|
||||
|
||||
modules:
|
||||
make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) modules
|
||||
|
||||
modules_install:
|
||||
make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) modules_install
|
||||
|
||||
|
||||
|
||||
insmod:
|
||||
sudo insmod $(MODULE_NAME).ko
|
||||
|
||||
reinsmod:
|
||||
sudo rmmod $(MODULE_NAME)
|
||||
sudo insmod $(MODULE_NAME).ko
|
||||
|
||||
github:
|
||||
cd $(ROOT) && make github
|
||||
|
||||
rmmod:
|
||||
sudo rmmod $(MODULE_NAME)
|
||||
|
||||
test :
|
||||
sudo ../injector/memInjector -l stack -m random -t word_0 --time 1 --timeout 3 -p 1
|
||||
|
||||
clean:
|
||||
make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) clean
|
||||
rm -f modules.order Module.symvers Module.markers
|
||||
|
||||
.PHNOY:
|
||||
modules modules_install clean
|
||||
|
||||
|
||||
|
||||
endif
|
||||
|
||||
@@ -0,0 +1,137 @@
|
||||
/*
|
||||
FPGA test
|
||||
byTX
|
||||
2013.1.31：create
|
||||
*/
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/module.h>
|
||||
//for file opration
|
||||
#include <linux/fs.h>
|
||||
//for cdev create
|
||||
#include <linux/cdev.h>
|
||||
//copy_to_user
|
||||
#include <linux/uaccess.h>
|
||||
//class_create
|
||||
#include <linux/device.h>
|
||||
//ioremap defined here
|
||||
#include <asm/io.h>
|
||||
|
||||
|
||||
#include <linux/version.h>
|
||||
|
||||
MODULE_LICENSE("Dual BSD/GPL");
|
||||
MODULE_AUTHOR("Gatieme");
|
||||
MODULE_DESCRIPTION("hello world");
|
||||
|
||||
#define FPGA_SIZE 1024
|
||||
#define FPGA_BASE 0x80010000
|
||||
|
||||
#define CMD_FPGA_MODULE_RST 0x20
|
||||
#define REG_RST_OFFSET 0x0006
|
||||
static void __iomem *io_base;
|
||||
struct cdev *fpga_cdev;
|
||||
struct class *fpga_class;
|
||||
dev_t fpga_devid;
|
||||
|
||||
static int fpga_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
printk("fpga open\n");
|
||||
return 0;
|
||||
}
|
||||
ssize_t fpga_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos)
|
||||
{
|
||||
*(unsigned short int*)buf=ioread16(io_base+(*f_pos));
|
||||
return 2;
|
||||
}
|
||||
/*fpga write*/
|
||||
ssize_t fpga_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos)
|
||||
{
|
||||
if(count==2)
|
||||
{
|
||||
iowrite16(*(unsigned short int*)buf,io_base+(*f_pos));
|
||||
return 2;
|
||||
}
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
loff_t fpga_llseek (struct file *filp, loff_t offset, int whence)
|
||||
{
|
||||
loff_t new_pos;
|
||||
if(offset>=0 && offset<FPGA_SIZE)
|
||||
new_pos=offset;
|
||||
else
|
||||
new_pos=0;
|
||||
filp->f_pos = new_pos;
|
||||
return new_pos;
|
||||
}
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36)
|
||||
static int fpga_ioctl(struct inode *indoe, struct file *file,
|
||||
unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
#else
|
||||
//long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
|
||||
//long (*compat_ioctl) (struct file *file, unsigned int cmd, unsigned long arg)
|
||||
static long fpga_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
//struct inode *inode = file->f_dentry->d_inode;
|
||||
struct inode *inode = inode = file_inode(file);
|
||||
#endif
|
||||
switch(cmd)
|
||||
{
|
||||
case CMD_FPGA_MODULE_RST:
|
||||
iowrite16(0, io_base+REG_RST_OFFSET);
|
||||
iowrite16(1, io_base+REG_RST_OFFSET);
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct file_operations fpga_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = fpga_open,
|
||||
.read = fpga_read,
|
||||
.write = fpga_write,
|
||||
.llseek = fpga_llseek,
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36)
|
||||
.ioctl = fpga_ioctl,
|
||||
#else
|
||||
.compat_ioctl = fpga_compat_ioctl,
|
||||
#endif
|
||||
};
|
||||
static int __init fpga_init(void)
|
||||
{
|
||||
|
||||
//创建字符设备
|
||||
fpga_cdev=cdev_alloc();
|
||||
cdev_init(fpga_cdev, &fpga_fops);
|
||||
fpga_cdev->owner = THIS_MODULE;
|
||||
|
||||
alloc_chrdev_region(&fpga_devid, 0, 1, "fpga");
|
||||
cdev_add(fpga_cdev,fpga_devid,1);
|
||||
|
||||
fpga_class = class_create(THIS_MODULE,"fpga_class");
|
||||
device_create(fpga_class, NULL, fpga_devid, NULL,"fpga");
|
||||
//申请内存
|
||||
io_base=ioremap(FPGA_BASE,FPGA_SIZE);
|
||||
if(io_base==0)
|
||||
printk("failed to ioremap fpga\n");
|
||||
printk("fpga initialized.\n");
|
||||
return 0;
|
||||
}
|
||||
static void __exit fpga_exit(void)
|
||||
{
|
||||
unregister_chrdev_region(fpga_devid,1);
|
||||
device_destroy(fpga_class , fpga_devid);
|
||||
class_destroy(fpga_class);
|
||||
cdev_del(fpga_cdev);
|
||||
iounmap(io_base);
|
||||
printk("fpga exit\n");
|
||||
}
|
||||
|
||||
module_init(fpga_init);
|
||||
module_exit(fpga_exit);
|
||||
|
||||
@@ -0,0 +1,82 @@
|
||||
# ------------------------------------------------------------------------------
|
||||
#
|
||||
# Makefile for the LDD-LinuxDeviceDrivers.
|
||||
#
|
||||
# Author: gatieme
|
||||
# Create: 2016-07-29 15:50:46
|
||||
# Last modified: 2016-07-29 16:10:29
|
||||
# Description:
|
||||
# This program is loaded as a kernel(v2.6.18 or later) module.
|
||||
# Use "make install" to load it into kernel.
|
||||
# Use "make remove" to remove the module out of kernel.
|
||||
#
|
||||
# ------------------------------------------------------------------------------
|
||||
|
||||
|
||||
ROOT=..
|
||||
#PLATFORM=$(shell $(ROOT)/systype.sh)
|
||||
#include $(ROOT)/Make.defines.$(PLATFORM)
|
||||
|
||||
# my driver description
|
||||
DRIVER_VERSION := "1.0.0"
|
||||
DRIVER_AUTHOR := "Gatieme @ AderStep Inc..."
|
||||
DRIVER_DESC := "Linux input module for Elo MultiTouch(MT) devices"
|
||||
DRIVER_LICENSE := "Dual BSD/GPL"
|
||||
|
||||
|
||||
MODULE_NAME := hello
|
||||
#MODCFLAGS:=-O2 -Wall -DMODULE -D__KERNEL__ -DLINUX -std=c99
|
||||
#EXTRA_CFLAGS += $(MODULE_FLAGS) $(CFG_INC) $(CFG_INC)
|
||||
EXTRA_CFLAGS += -g -std=gnu99
|
||||
|
||||
|
||||
ifneq ($(KERNELRELEASE),) # kernelspace
|
||||
|
||||
obj-m := $(MODULE_NAME).o
|
||||
|
||||
else # userspace
|
||||
|
||||
CURRENT_PATH ?= $(shell pwd)
|
||||
ifeq ($(ARCH),arm64)
|
||||
LINUX_KERNEL_PATH ?= /home/rockchip/rk3399/Android/7.1/android/kernel
|
||||
else
|
||||
LINUX_KERNEL ?= $(shell uname -r)
|
||||
LINUX_KERNEL_PATH ?= /lib/modules/$(LINUX_KERNEL)/build
|
||||
endif
|
||||
|
||||
|
||||
modules:
|
||||
make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) modules
|
||||
|
||||
modules_install:
|
||||
make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) modules_install
|
||||
|
||||
|
||||
|
||||
insmod:
|
||||
sudo insmod $(MODULE_NAME).ko
|
||||
|
||||
reinsmod:
|
||||
sudo rmmod $(MODULE_NAME)
|
||||
sudo insmod $(MODULE_NAME).ko
|
||||
|
||||
github:
|
||||
cd $(ROOT) && make github
|
||||
|
||||
rmmod:
|
||||
sudo rmmod $(MODULE_NAME)
|
||||
|
||||
test :
|
||||
sudo ../injector/memInjector -l stack -m random -t word_0 --time 1 --timeout 3 -p 1
|
||||
|
||||
clean:
|
||||
make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) clean
|
||||
rm -f modules.order Module.symvers Module.markers
|
||||
|
||||
.PHNOY:
|
||||
modules modules_install clean
|
||||
|
||||
|
||||
|
||||
endif
|
||||
|
||||
@@ -0,0 +1,84 @@
|
||||
# ------------------------------------------------------------------------------
|
||||
#
|
||||
# Makefile for the LDD-LinuxDeviceDrivers.
|
||||
#
|
||||
# Author: gatieme
|
||||
# Create: 2016-07-29 15:50:46
|
||||
# Last modified: 2016-07-29 16:10:29
|
||||
# Description:
|
||||
# This program is loaded as a kernel(v2.6.18 or later) module.
|
||||
# Use "make install" to load it into kernel.
|
||||
# Use "make remove" to remove the module out of kernel.
|
||||
#
|
||||
# ------------------------------------------------------------------------------
|
||||
|
||||
|
||||
ROOT=..
|
||||
#PLATFORM=$(shell $(ROOT)/systype.sh)
|
||||
#include $(ROOT)/Make.defines.$(PLATFORM)
|
||||
|
||||
# my driver description
|
||||
DRIVER_VERSION := "1.0.0"
|
||||
DRIVER_AUTHOR := "Gatieme @ AderStep Inc..."
|
||||
DRIVER_DESC := "Linux input module for Elo MultiTouch(MT) devices"
|
||||
DRIVER_LICENSE := "Dual BSD/GPL"
|
||||
|
||||
|
||||
|
||||
MODULE_NAME := hello
|
||||
|
||||
ifneq ($(KERNELRELEASE),)
|
||||
|
||||
#CFG_FLAGS += -O2 -I./
|
||||
#EXTRA_CFLAGS += $(C_FLAGS) $(CFG_INC) $(CFG_INC)
|
||||
|
||||
|
||||
|
||||
RESMAIN_CORE_OBJS := hello_dev.o
|
||||
RESMAIN_GLUE_OBJS := hello_proc.o hello_devfs.o
|
||||
|
||||
hello-objs := $(RESMAIN_GLUE_OBJS) $(RESMAIN_CORE_OBJS)
|
||||
obj-m := $(MODULE_NAME).o
|
||||
|
||||
else
|
||||
|
||||
#MODULE_NAME := memory-engine
|
||||
KERNELDIR ?= /lib/modules/$(shell uname -r)/build
|
||||
#KERNELDIR ?= /home/gatieme/Work/Kernel/
|
||||
PWD := $(shell pwd)
|
||||
|
||||
modules:
|
||||
make -C $(KERNELDIR) M=$(PWD) modules
|
||||
|
||||
modules_install:
|
||||
make -C $(KERNELDIR) M=$(PWD) modules_install
|
||||
|
||||
|
||||
|
||||
insmod:
|
||||
sudo insmod $(MODULE_NAME).ko
|
||||
|
||||
reinsmod:
|
||||
sudo rmmod $(MODULE_NAME)
|
||||
sudo insmod $(MODULE_NAME).ko
|
||||
|
||||
github:
|
||||
cd $(ROOT) && make github
|
||||
|
||||
rmmod:
|
||||
sudo rmmod $(MODULE_NAME)
|
||||
|
||||
test :
|
||||
sudo ../injector/memInjector -l stack -m random -t word_0 --time 1 --timeout 3 -p 1
|
||||
|
||||
clean:
|
||||
make -C $(KERNELDIR) M=$(PWD) clean
|
||||
rm -f modules.order Module.symvers Module.markers
|
||||
|
||||
.PHNOY:
|
||||
modules modules_install clean
|
||||
|
||||
|
||||
|
||||
endif
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,33 @@
|
||||
#ifndef _HELLO_ANDROID_H_
|
||||
#define _HELLO_ANDROID_H_
|
||||
|
||||
#include <linux/cdev.h>
|
||||
#include <linux/semaphore.h>
|
||||
|
||||
/* config */
|
||||
#define HELLO_DEVFS_BUILD
|
||||
|
||||
|
||||
#define HELLO_PROC_BUILD
|
||||
#define PROC_SEQ_FILE_OPERATIONS
|
||||
|
||||
|
||||
#define HELLO_DEVICE_NODE_NAME "hello"
|
||||
#define HELLO_DEVICE_FILE_NAME "hello"
|
||||
|
||||
#ifdef HELLO_PROC_BUILD
|
||||
#define HELLO_DEVICE_PROC_NAME "hello"
|
||||
#endif
|
||||
|
||||
#ifdef HELLO_DEVFS_BUILD
|
||||
#define HELLO_DEVICE_CLASS_NAME "hello"
|
||||
#endif
|
||||
|
||||
struct hello_android_dev
|
||||
{
|
||||
int val;
|
||||
struct semaphore sem;
|
||||
struct cdev dev;
|
||||
};
|
||||
|
||||
#endif
|
||||
Executable
BIN
Binary file not shown.
@@ -0,0 +1,27 @@
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <fcntl.h>
|
||||
#define DEVICE_NAME "/dev/hello"
|
||||
int main(int argc, char** argv)
|
||||
{
|
||||
int fd = -1;
|
||||
int val = 0;
|
||||
fd = open(DEVICE_NAME, O_RDWR);
|
||||
if(fd == -1) {
|
||||
printf("Failed to open device %s.\n", DEVICE_NAME);
|
||||
return -1;
|
||||
}
|
||||
|
||||
printf("Read original value:\n");
|
||||
read(fd, &val, sizeof(val));
|
||||
printf("%d.\n\n", val);
|
||||
val = 5;
|
||||
printf("Write value %d to %s.\n\n", val, DEVICE_NAME);
|
||||
write(fd, &val, sizeof(val));
|
||||
|
||||
printf("Read the value again:\n");
|
||||
read(fd, &val, sizeof(val));
|
||||
printf("%d.\n\n", val);
|
||||
close(fd);
|
||||
return 0;
|
||||
}
|
||||
@@ -0,0 +1,82 @@
|
||||
# ------------------------------------------------------------------------------
|
||||
#
|
||||
# Makefile for the LDD-LinuxDeviceDrivers.
|
||||
#
|
||||
# Author: gatieme
|
||||
# Create: 2016-07-29 15:50:46
|
||||
# Last modified: 2016-07-29 16:10:29
|
||||
# Description:
|
||||
# This program is loaded as a kernel(v2.6.18 or later) module.
|
||||
# Use "make install" to load it into kernel.
|
||||
# Use "make remove" to remove the module out of kernel.
|
||||
#
|
||||
# ------------------------------------------------------------------------------
|
||||
|
||||
|
||||
ROOT=..
|
||||
#PLATFORM=$(shell $(ROOT)/systype.sh)
|
||||
#include $(ROOT)/Make.defines.$(PLATFORM)
|
||||
|
||||
# my driver description
|
||||
DRIVER_VERSION := "1.0.0"
|
||||
DRIVER_AUTHOR := "Gatieme @ AderStep Inc..."
|
||||
DRIVER_DESC := "Linux input module for Elo MultiTouch(MT) devices"
|
||||
DRIVER_LICENSE := "Dual BSD/GPL"
|
||||
|
||||
|
||||
MODULE_NAME := test
|
||||
#MODCFLAGS:=-O2 -Wall -DMODULE -D__KERNEL__ -DLINUX -std=c99
|
||||
#EXTRA_CFLAGS += $(MODULE_FLAGS) $(CFG_INC) $(CFG_INC)
|
||||
|
||||
|
||||
|
||||
ifneq ($(KERNELRELEASE),) # kernelspace
|
||||
|
||||
obj-m := $(MODULE_NAME).o
|
||||
|
||||
else # userspace
|
||||
|
||||
CURRENT_PATH ?= $(shell pwd)
|
||||
ifeq ($(ARCH),arm64)
|
||||
LINUX_KERNEL_PATH ?= /home/rockchip/rk3399/Android/7.1/android/kernel
|
||||
else
|
||||
LINUX_KERNEL ?= $(shell uname -r)
|
||||
LINUX_KERNEL_PATH ?= /lib/modules/$(LINUX_KERNEL)/build
|
||||
endif
|
||||
|
||||
|
||||
modules:
|
||||
make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) modules
|
||||
|
||||
modules_install:
|
||||
make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) modules_install
|
||||
|
||||
|
||||
|
||||
insmod:
|
||||
sudo insmod $(MODULE_NAME).ko
|
||||
|
||||
reinsmod:
|
||||
sudo rmmod $(MODULE_NAME)
|
||||
sudo insmod $(MODULE_NAME).ko
|
||||
|
||||
github:
|
||||
cd $(ROOT) && make github
|
||||
|
||||
rmmod:
|
||||
sudo rmmod $(MODULE_NAME)
|
||||
|
||||
test :
|
||||
sudo ../injector/memInjector -l stack -m random -t word_0 --time 1 --timeout 3 -p 1
|
||||
|
||||
clean:
|
||||
make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) clean
|
||||
rm -f modules.order Module.symvers Module.markers
|
||||
|
||||
.PHNOY:
|
||||
modules modules_install clean
|
||||
|
||||
|
||||
|
||||
endif
|
||||
|
||||
@@ -0,0 +1,52 @@
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/sched.h>
|
||||
//#include <linux/list.h>
|
||||
//#include <linux/mm.h>
|
||||
//#include <linux/mm_types.h>
|
||||
|
||||
|
||||
MODULE_LICENSE("Dual BSD/GPL");
|
||||
MODULE_AUTHOR("Gatieme");
|
||||
MODULE_DESCRIPTION("test world");
|
||||
|
||||
/*
|
||||
* print the module information
|
||||
*/
|
||||
static void print_module(void)
|
||||
{
|
||||
struct module *mod;
|
||||
|
||||
printk(KERN_ALERT "this module: %p==%p\n", &__this_module, THIS_MODULE);
|
||||
printk(KERN_ALERT "module state: %d\n", THIS_MODULE->state);
|
||||
printk(KERN_ALERT "module name: %s\n", THIS_MODULE->name);
|
||||
|
||||
list_for_each_entry(mod, *(&THIS_MODULE->list.prev), list);
|
||||
printk(KERN_ALERT "module name: %s\n", mod->name);
|
||||
printk(KERN_ALERT "module state: %d\n", THIS_MODULE->state);
|
||||
}
|
||||
|
||||
|
||||
static int test_init(void)
|
||||
{
|
||||
print_module( );
|
||||
|
||||
printk(KERN_ALERT "run in cpu %d\n", get_cpu());
|
||||
|
||||
printk(KERN_ALERT "PAGE_OFFSET : 0x%lx, TASK_SIZE : 0x%lx", PAGE_OFFSET, TASK_SIZE);
|
||||
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void test_exit(void)
|
||||
{
|
||||
printk(KERN_ERR"exit");
|
||||
}
|
||||
|
||||
|
||||
module_init(test_init);
|
||||
module_exit(test_exit);
|
||||
@@ -0,0 +1,77 @@
|
||||
# ------------------------------------------------------------------------------
|
||||
#
|
||||
# Makefile for the LDD-LinuxDeviceDrivers.
|
||||
#
|
||||
# Author: gatieme
|
||||
# Create: 2016-07-29 15:50:46
|
||||
# Last modified: 2016-07-29 16:10:29
|
||||
# Description:
|
||||
# This program is loaded as a kernel(v2.6.18 or later) module.
|
||||
# Use "make install" to load it into kernel.
|
||||
# Use "make remove" to remove the module out of kernel.
|
||||
#
|
||||
# ------------------------------------------------------------------------------
|
||||
|
||||
|
||||
# my driver description
|
||||
DRIVER_VERSION := "1.0.0"
|
||||
DRIVER_AUTHOR := "Gatieme @ AderStep Inc..."
|
||||
DRIVER_DESC := "Linux input module for Elo MultiTouch(MT) devices"
|
||||
DRIVER_LICENSE := "Dual BSD/GPL"
|
||||
|
||||
|
||||
MODULE_NAME := test_module
|
||||
|
||||
EXTRA_CFLAGS += -g -std=gnu99
|
||||
|
||||
|
||||
ifneq ($(KERNELRELEASE),) # kernelspace
|
||||
|
||||
obj-m += $(MODULE_NAME).o
|
||||
|
||||
else # userspace
|
||||
|
||||
|
||||
CURRENT_PATH ?= $(shell pwd)
|
||||
ifeq ($(ARCH),arm64)
|
||||
LINUX_KERNEL_PATH ?= /home/rockchip/rk3399/Android/7.1/android/kernel
|
||||
else
|
||||
LINUX_KERNEL ?= $(shell uname -r)
|
||||
LINUX_KERNEL_PATH ?= /lib/modules/$(LINUX_KERNEL)/build
|
||||
endif
|
||||
|
||||
modules:
|
||||
make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) modules
|
||||
|
||||
modules_install:
|
||||
make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) modules_install
|
||||
|
||||
|
||||
|
||||
insmod:
|
||||
sudo insmod $(MODULE_NAME).ko
|
||||
|
||||
reinsmod:
|
||||
sudo rmmod $(MODULE_NAME)
|
||||
sudo insmod $(MODULE_NAME).ko
|
||||
|
||||
github:
|
||||
cd $(ROOT) && make github
|
||||
|
||||
rmmod:
|
||||
sudo rmmod $(MODULE_NAME)
|
||||
|
||||
test :
|
||||
sudo ../injector/memInjector -l stack -m random -t word_0 --time 1 --timeout 3 -p 1
|
||||
|
||||
clean:
|
||||
make -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) clean
|
||||
rm -f modules.order Module.symvers Module.markers
|
||||
|
||||
.PHNOY:
|
||||
modules modules_install clean
|
||||
|
||||
|
||||
|
||||
endif
|
||||
|
||||
@@ -0,0 +1,115 @@
|
||||
#include <linux/module.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/cdev.h>
|
||||
#include <linux/slab.h>
|
||||
#include <asm/io.h>
|
||||
#include <asm/uaccess.h>
|
||||
|
||||
static int g_testmodule_major = 0;
|
||||
|
||||
struct testmodule_dev{
|
||||
struct cdev dev;
|
||||
char buf[100];
|
||||
};
|
||||
|
||||
struct testmodule_dev* testmodule_devp;
|
||||
|
||||
static ssize_t testmodule_read(struct file* filp, char __user* buf, size_t buf_size, loff_t* f_pos){
|
||||
struct testmodule_dev* dev = filp->private_data;
|
||||
|
||||
if(copy_to_user(buf,dev->buf, 100))
|
||||
{
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
return 100;
|
||||
}
|
||||
|
||||
static ssize_t testmodule_write(struct file* filp, const char __user* buf, size_t buf_size, loff_t* f_pos){
|
||||
struct testmodule_dev* dev = filp->private_data;
|
||||
|
||||
if(copy_from_user(dev->buf,buf,buf_size))
|
||||
{
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
return buf_size;
|
||||
}
|
||||
|
||||
static int testmodule_open(struct inode* node, struct file* filp){
|
||||
struct testmodule_dev* dev = container_of(node->i_cdev,struct testmodule_dev, dev);
|
||||
filp->private_data = dev;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static long testmodule_ioctl(struct file* filp, unsigned int cmd, unsigned long arg){
|
||||
struct testmodule_dev* dev = filp->private_data;
|
||||
switch(cmd){
|
||||
case 0:
|
||||
memset(dev->buf,0,100);
|
||||
printk(KERN_INFO "buf set to zero!");
|
||||
break;
|
||||
case 1:
|
||||
memset(dev->buf,1,100);
|
||||
printk(KERN_INFO "buf set to 1!");
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct file_operations testmodule_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.read = testmodule_read,
|
||||
.write = testmodule_write,
|
||||
.unlocked_ioctl = testmodule_ioctl,
|
||||
.open = testmodule_open
|
||||
};
|
||||
|
||||
void updateDev(struct testmodule_dev* dev, int index){
|
||||
dev_t devno = MKDEV(g_testmodule_major, index);
|
||||
int error;
|
||||
cdev_init(&dev->dev, &testmodule_fops);
|
||||
dev->dev.owner = THIS_MODULE;
|
||||
error = cdev_add(&dev->dev, devno, 1);
|
||||
if(error)
|
||||
printk(KERN_NOTICE "Error %d adding testmodule %d", error, index);
|
||||
}
|
||||
|
||||
int __init testmodule_init(void){
|
||||
dev_t device_no;
|
||||
/*Get Major Number*/
|
||||
alloc_chrdev_region(&device_no,0,1,"testmodule");
|
||||
g_testmodule_major = MAJOR(device_no);
|
||||
|
||||
/*Generate device struct*/
|
||||
testmodule_devp = kmalloc(sizeof(struct testmodule_dev), GFP_KERNEL);
|
||||
if(!testmodule_devp){
|
||||
/*Generate Failed*/
|
||||
int result;
|
||||
result = -ENOMEM;
|
||||
unregister_chrdev_region(device_no, 0);
|
||||
return result;
|
||||
}
|
||||
memset(testmodule_devp,0,sizeof(struct testmodule_dev));
|
||||
|
||||
/*Update device struct*/
|
||||
updateDev(testmodule_devp,MINOR(device_no));
|
||||
return 0;
|
||||
}
|
||||
|
||||
void __exit testmodule_exit(void){
|
||||
cdev_del(&testmodule_devp->dev);
|
||||
kfree(testmodule_devp);
|
||||
unregister_chrdev_region(MKDEV(g_testmodule_major,0),1);
|
||||
}
|
||||
|
||||
module_init(testmodule_init);
|
||||
module_exit(testmodule_exit);
|
||||
|
||||
MODULE_LICENSE("Dual BSD/GPL");
|
||||
Reference in New Issue
Block a user