82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
|
/*
|
||
|
|
* media_device_open.c - Media Controller Device Open Test
|
||
|
|
*
|
||
|
|
* Copyright (c) 2016 Shuah Khan <shuahkh@osg.samsung.com>
|
||
|
|
* Copyright (c) 2016 Samsung Electronics Co., Ltd.
|
||
|
|
*
|
||
|
|
* This file is released under the GPLv2.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This file adds a test for Media Controller API.
|
||
|
|
* This test should be run as root and should not be
|
||
|
|
* included in the Kselftest run. This test should be
|
||
|
|
* run when hardware and driver that makes use Media
|
||
|
|
* Controller API are present in the system.
|
||
|
|
*
|
||
|
|
* This test opens user specified Media Device and calls
|
||
|
|
* MEDIA_IOC_DEVICE_INFO ioctl, closes the file, and exits.
|
||
|
|
*
|
||
|
|
* Usage:
|
||
|
|
* sudo ./media_device_open -d /dev/mediaX
|
||
|
|
*
|
||
|
|
* Run this test is a loop and run bind/unbind on the driver.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <sys/ioctl.h>
|
||
|
|
#include <sys/stat.h>
|
||
|
|
#include <linux/media.h>
|
||
|
|
|
||
|
|
int main(int argc, char **argv)
|
||
|
|
{
|
||
|
|
int opt;
|
||
|
|
char media_device[256];
|
||
|
|
int count = 0;
|
||
|
|
struct media_device_info mdi;
|
||
|
|
int ret;
|
||
|
|
int fd;
|
||
|
|
|
||
|
|
if (argc < 2) {
|
||
|
|
printf("Usage: %s [-d </dev/mediaX>]\n", argv[0]);
|
||
|
|
exit(-1);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process arguments */
|
||
|
|
while ((opt = getopt(argc, argv, "d:")) != -1) {
|
||
|
|
switch (opt) {
|
||
|
|
case 'd':
|
||
|
|
strncpy(media_device, optarg, sizeof(media_device) - 1);
|
||
|
|
media_device[sizeof(media_device)-1] = '\0';
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
printf("Usage: %s [-d </dev/mediaX>]\n", argv[0]);
|
||
|
|
exit(-1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (getuid() != 0) {
|
||
|
|
printf("Please run the test as root - Exiting.\n");
|
||
|
|
exit(-1);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Open Media device and keep it open */
|
||
|
|
fd = open(media_device, O_RDWR);
|
||
|
|
if (fd == -1) {
|
||
|
|
printf("Media Device open errno %s\n", strerror(errno));
|
||
|
|
exit(-1);
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = ioctl(fd, MEDIA_IOC_DEVICE_INFO, &mdi);
|
||
|
|
if (ret < 0)
|
||
|
|
printf("Media Device Info errno %s\n", strerror(errno));
|
||
|
|
else
|
||
|
|
printf("Media device model %s driver %s\n",
|
||
|
|
mdi.model, mdi.driver);
|
||
|
|
}
|