Skip to content

Instantly share code, notes, and snippets.

@tmzt tmzt/mod12.c
Created Oct 11, 2010

Embed
What would you like to do?
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kobject.h>
#include <linux/platform_device.h>
#include "../fs/sysfs/sysfs.h"
struct kobject *pbus_kobject;
struct sysfs_dirent *sd;
struct sysfs_dirent *dir;
static struct device *get_dev(struct sysfs_dirent *dir);
static void walk_dir(struct sysfs_dirent *dir, char *name, void (*found_it)(struct sysfs_dirent *));
static void found_msmsdcc(struct sysfs_dirent *dir);
static void found_mmchost(struct sysfs_dirent *dir);
static struct device *get_dev(struct sysfs_dirent *dir) {
struct kobject *kobj;
struct device *dev;
kobj = dir->s_dir.kobj;
printk("get_dev: kobject: %.8x\n", (unsigned int)kobj);
dev = container_of(kobj, struct device, kobj);
printk("get_dev: dev: %.8x\n", (unsigned int)dev);
return dev;
}
static void found_msmsdcc(struct sysfs_dirent *dir) {
struct platform_device *pdev = container_of(get_dev(dir), struct platform_device, dev);
printk("found_msmsdcc: pdev: %.8x\n", (unsigned int)pdev);
printk("pdev name: %s\n", pdev->name);
//platform_device_unregister(pdev);
walk_dir(dir, "mmc0", &found_mmchost);
return;
}
static void found_mmchost(struct sysfs_dirent *dir) {
struct device *dev = get_dev(dir);
printk("found_mmchost: dev: %.8x\n", (unsigned int)dev);
}
static void walk_dir(struct sysfs_dirent *dir, char *name, void (*found_it)(struct sysfs_dirent *)) {
struct sysfs_dirent *cur;
// printk("dirent flags: %d\n", dir->s_flags);
// printk("dirent name: %s\n", dir->s_name);
if (strcmp(dir->s_name, name) == 0) {
printk("found %s: %s\n", name, dir->s_name);
found_it(dir);
return;
}
if (dir->s_flags & SYSFS_DIR) {
for (cur = dir->s_dir.children; cur->s_sibling != NULL; cur = cur->s_sibling) walk_dir(cur, name, found_it);
return;
};
if (dir->s_flags & SYSFS_KOBJ_ATTR) {
return;
};
if (dir->s_flags & SYSFS_KOBJ_LINK) {
walk_dir(dir->s_symlink.target_sd, name, found_it);
};
return;
}
static int __init test_init(void) {
printk("test module loaded\n");
pbus_kobject = &platform_bus.kobj;
sd = pbus_kobject->sd;
printk("platform_bus kobject: %.8x\n", (unsigned int)pbus_kobject);
walk_dir(sd, "msm_sdcc.2", &found_msmsdcc);
return 0;
}
static void __exit test_exit(void) {
printk("test module unloaded\n");
}
module_init(test_init);
module_exit(test_exit);
MODULE_LICENSE("GPL");
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kobject.h>
#include <linux/platform_device.h>
#include "../fs/sysfs/sysfs.h"
struct kobject *pbus_kobject;
struct sysfs_dirent *sd;
struct sysfs_dirent *dir;
static struct device *get_dev(struct sysfs_dirent *dir);
static void walk_dir(struct sysfs_dirent *dir, char *name, void (*found_it)(struct sysfs_dirent *));
static void found_msmsdcc(struct sysfs_dirent *dir);
static void found_mmchost(struct sysfs_dirent *dir);
static struct device *get_dev(struct sysfs_dirent *dir) {
struct kobject *kobj;
struct device *dev;
kobj = dir->s_dir.kobj;
printk("get_dev: kobject: %.8x\n", (unsigned int)kobj);
dev = container_of(kobj, struct device, kobj);
printk("get_dev: dev: %.8x\n", (unsigned int)dev);
return dev;
}
static void found_msmsdcc(struct sysfs_dirent *dir) {
struct platform_device *pdev = container_of(get_dev(dir), struct platform_device, dev);
printk("found_msmsdcc: pdev: %.8x\n", (unsigned int)pdev);
printk("pdev name: %s\n", pdev->name);
//platform_device_unregister(pdev);
walk_dir(dir, "mmc0", &found_mmchost);
return;
}
static void found_mmchost(struct sysfs_dirent *dir) {
struct device *dev = get_dev(dir);
printk("found_mmchost: dev: %.8x\n", (unsigned int)dev);
}
static void walk_dir(struct sysfs_dirent *dir, char *name, void (*found_it)(struct sysfs_dirent *)) {
struct sysfs_dirent *cur;
// printk("dirent flags: %d\n", dir->s_flags);
// printk("dirent name: %s\n", dir->s_name);
if (strcmp(dir->s_name, name) == 0) {
printk("found %s: %s\n", name, dir->s_name);
found_it(dir);
return;
}
if (dir->s_flags & SYSFS_DIR) {
for (cur = dir->s_dir.children; cur->s_sibling != NULL; cur = cur->s_sibling) walk_dir(cur, name, found_it);
return;
};
if (dir->s_flags & SYSFS_KOBJ_ATTR) {
return;
};
if (dir->s_flags & SYSFS_KOBJ_LINK) {
walk_dir(dir->s_symlink.target_sd, name, found_it);
};
return;
}
static int __init test_init(void) {
printk("test module loaded\n");
pbus_kobject = &platform_bus.kobj;
sd = pbus_kobject->sd;
printk("platform_bus kobject: %.8x\n", (unsigned int)pbus_kobject);
walk_dir(sd, "msm_sdcc.2", &found_msmsdcc);
return 0;
}
static void __exit test_exit(void) {
printk("test module unloaded\n");
}
module_init(test_init);
module_exit(test_exit);
MODULE_LICENSE("GPL");
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kobject.h>
#include <linux/platform_device.h>
#include "../fs/sysfs/sysfs.h"
struct kobject *pbus_kobject;
struct sysfs_dirent *sd;
struct sysfs_dirent *dir;
static struct device *get_dev(struct sysfs_dirent *dir);
static void walk_dir(struct sysfs_dirent *dir, char *name, void (*found_it)(struct sysfs_dirent *));
static void found_msmsdcc(struct sysfs_dirent *dir);
static void found_mmchost(struct sysfs_dirent *dir);
static struct device *get_dev(struct sysfs_dirent *dir) {
struct kobject *kobj;
struct device *dev;
kobj = dir->s_dir.kobj;
printk("get_dev: kobject: %.8x\n", (unsigned int)kobj);
dev = container_of(kobj, struct device, kobj);
printk("get_dev: dev: %.8x\n", (unsigned int)dev);
return dev;
}
static void found_msmsdcc(struct sysfs_dirent *dir) {
struct platform_device *pdev = container_of(get_dev(dir), struct platform_device, dev);
printk("found_msmsdcc: pdev: %.8x\n", (unsigned int)pdev);
printk("pdev name: %s\n", pdev->name);
//platform_device_unregister(pdev);
walk_dir(dir, "mmc0", &found_mmchost);
return;
}
static void found_mmchost(struct sysfs_dirent *dir) {
struct device *dev = get_dev(dir);
printk("found_mmchost: dev: %.8x\n", (unsigned int)dev);
}
static void walk_dir(struct sysfs_dirent *dir, char *name, void (*found_it)(struct sysfs_dirent *)) {
struct sysfs_dirent *cur;
// printk("dirent flags: %d\n", dir->s_flags);
// printk("dirent name: %s\n", dir->s_name);
if (strcmp(dir->s_name, name) == 0) {
printk("found %s: %s\n", name, dir->s_name);
found_it(dir);
return;
}
if (dir->s_flags & SYSFS_DIR) {
for (cur = dir->s_dir.children; cur->s_sibling != NULL; cur = cur->s_sibling) walk_dir(cur, name, found_it);
return;
};
if (dir->s_flags & SYSFS_KOBJ_ATTR) {
return;
};
if (dir->s_flags & SYSFS_KOBJ_LINK) {
walk_dir(dir->s_symlink.target_sd, name, found_it);
};
return;
}
static int __init test_init(void) {
printk("test module loaded\n");
pbus_kobject = &platform_bus.kobj;
sd = pbus_kobject->sd;
printk("platform_bus kobject: %.8x\n", (unsigned int)pbus_kobject);
walk_dir(sd, "msm_sdcc.2", &found_msmsdcc);
return 0;
}
static void __exit test_exit(void) {
printk("test module unloaded\n");
}
module_init(test_init);
module_exit(test_exit);
MODULE_LICENSE("GPL");
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.