first commit

.axp209.ko.cmd

@@ -0,0 +1 @@
+cmd_/home/mrdong/openwrt/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7620a/driver_dev/axp209_drv/axp209.ko := mipsel-openwrt-linux-ld -r  -m elf32ltsmip -T /home/mrdong/openwrt/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7620a/linux-3.10.49/scripts/module-common.lds -s --build-id  -o /home/mrdong/openwrt/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7620a/driver_dev/axp209_drv/axp209.ko /home/mrdong/openwrt/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7620a/driver_dev/axp209_drv/axp209.o /home/mrdong/openwrt/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7620a/driver_dev/axp209_drv/axp209.mod.o

.tmp_versions/axp209.mod

@@ -0,0 +1,2 @@
+/home/mrdong/openwrt/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7620a/driver_dev/axp209_drv/axp209.ko
+/home/mrdong/openwrt/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7620a/driver_dev/axp209_drv/axp209.o

Makefile

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+ARCH ?=mips
+CROSS_COMPILE ?=mipsel-openwrt-linux-
+CC=$(CROSS_COMPILE)gcc
+obj-m := axp209.o                   #要生成的模块名    
+mymodules-objs:= axp209.o        #生成这个模块名所需要的目标文件
+
+KDIR :=/home/mrdong/openwrt/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7620a/linux-3.10.49/ 
+
+PWD := $(shell pwd)
+
+default:
+	$(CC) demo.c -o demo
+	$(CC) axp.c -o axp209 -lm
+	make -C $(KDIR) M=$(PWD) modules
+
+clean:
+	rm -rf *.o .* .cmd *.ko *.mod.c .tmp_versions demo axp209

Module.symvers

@@ -0,0 +1,4 @@
+0x00000000	unregister_axp209_notifier	/home/mrdong/openwrt/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7620a/driver_dev/axp209_drv/axp209	EXPORT_SYMBOL
+0x00000000	rgbled_notifier	/home/mrdong/openwrt/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7620a/driver_dev/rgbled/rgbled	EXPORT_SYMBOL
+0x00000000	register_axp209_notifier	/home/mrdong/openwrt/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7620a/driver_dev/axp209_drv/axp209	EXPORT_SYMBOL
+0x00000000	call_axp209_notifiers	/home/mrdong/openwrt/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7620a/driver_dev/axp209_drv/axp209	EXPORT_SYMBOL

axp.c

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+#include "axp209.h"
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+void usage() __attribute__ ((noreturn));
+void usage()
+{
+    printf("-----------usage----------->\n");
+    printf("axp209 set reg value\n");
+    printf("axp209 get reg\n");
+    exit(-1);
+}
+
+int hex2int(char *szhex)
+{
+    int n = 0, len;
+    int value = 0;
+    char hs2i[128] ={
+    ['0'] = 0,
+    ['1'] = 1,
+    ['2'] = 2,
+    ['3'] = 3,
+    ['4'] = 4,
+    ['5'] = 5,
+    ['6'] = 6,
+    ['7'] = 7,
+    ['8'] = 8,
+    ['9'] = 9,
+    ['A'] = 10,
+    ['B'] = 11,
+    ['C'] = 12,
+    ['D'] = 13,
+    ['E'] = 14,
+    ['F'] = 15,
+    ['a'] = 10,
+    ['b'] = 11,
+    ['c'] = 12,
+    ['d'] = 13,
+    ['e'] = 14,
+    ['f'] = 15,
+    };
+    len = strlen(szhex);
+    while(len)
+    {
+        value += hs2i[szhex[len - 1]] * pow(16, n);
+        n ++;
+        len --;
+    }
+    return value;
+}
+int str2int(char *hex)
+{
+   if(hex[1] == 'x' || hex[1] == 'X')
+   {
+      return hex2int(&hex[2]);
+   }
+   return atoi(hex);
+}
+int main(int argc, char *argv[])
+{
+    int fd = -1;
+    unsigned char status = 0xff;
+    unsigned short context = 0xff;
+    fd = open("/dev/axp209",O_RDWR, S_IRUSR | S_IWUSR);
+    ioctl(fd, AXP209_GET_ELEC, &status);
+    printf("%s\t%d\t%d\n", __func__, __LINE__, status);
+    if(argc > 2 && (!strcmp("get",argv[1])) )
+    {
+        context = (str2int(argv[2]) & 0xff) << 8;
+        ioctl(fd, AXP209_GET_REG, &context);
+        printf("%x\t%x\n",context >> 8, context & 0xff);
+    }
+    else if(argc > 3 && (!strcmp("set",argv[1])))
+    {
+        context = (str2int(argv[2]) & 0xff) << 8;
+        context |= (str2int(argv[3]) & 0xff);
+        ioctl(fd, AXP209_SET_REG, &context);
+    }
+    else
+    {
+    //    usage();
+        ioctl(fd, AXP209_GET_ADDR, 0x00);
+    }
+    close(fd);
+    return 0;
+}