diff options
| -rw-r--r-- | v4l2-apps/util/v4l2-sysfs-path.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/v4l2-apps/util/v4l2-sysfs-path.c b/v4l2-apps/util/v4l2-sysfs-path.c index e3f3e63e8..90157fa11 100644 --- a/v4l2-apps/util/v4l2-sysfs-path.c +++ b/v4l2-apps/util/v4l2-sysfs-path.c @@ -23,6 +23,7 @@ #include <stdio.h> #include <string.h> #include <dirent.h> +#include <sys/stat.h> #define USB_ID "usb-" #define PCI_ID "PCI:" @@ -135,6 +136,52 @@ err: return NULL; } +/* + Examples of subdevs: + sound:audio1 + sound:controlC1 + sound:dsp1 + sound:mixer1 + sound:pcmC1D0c + dvb:dvb0.demux0 + dvb:dvb0.dvr0 + dvb:dvb0.frontend0 + dvb:dvb0.net0 + i2c-adapter:i2c-4 + input:input8 +*/ + +void get_subdevs(char *path) +{ + DIR *dir; + struct dirent *entry; + struct stat st; + char *p, name[1024]; + + dir = opendir(path); + if (!dir) + return; + + strcpy(name, path); + strcat(name, "/"); + p = name + strlen(name); + + printf("Subdevs: "); + entry = readdir(dir); + while (entry) { + strcpy(p, entry->d_name); + if ((lstat(name, &st) == 0) && + !S_ISDIR(st.st_mode)) { + char *s = strchr(entry->d_name, ':'); + if (s) + printf("%s ", entry->d_name); + } + entry = readdir(dir); + } + closedir(dir); + printf("\n"); +} + void get_sysfs(char *fname) { struct v4l2_driver drv; @@ -148,9 +195,11 @@ void get_sysfs(char *fname) printf("bus info = %s\n", drv.cap.bus_info); path = obtain_bus_sysfs_path((char *)drv.cap.bus_info); if (path) { - printf("sysfs path = %s\n\n", path); + printf("sysfs path = %s\n", path); + get_subdevs(path); free(path); } + printf("\n"); v4l2_close(&drv); } |