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scan devices

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Denis 2023-12-03 21:49:15 +01:00
parent e3ae54618d
commit 7e1cb3cc13
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2 changed files with 47 additions and 2 deletions
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47
platform.c
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@ -1,13 +1,56 @@
#include <asm-generic/errno-base.h>
#include <stdlib.h>
#define PLATFORM_FILE
#include <libudev.h>
#include "platform.h"
static const char* const platform_input_path = "/sys/devices/platform/asus-mcu.0/input/mode";
static int find_device(struct udev *udev) {
struct udev_enumerate *const enumerate = udev_enumerate_new(udev);
if (enumerate == NULL) {
fprintf(stderr, "Error in udev_enumerate_new: mode switch will not be available.\n");
return -ENOENT;
}
const int enumerate_scan_devices_res = udev_enumerate_scan_devices(enumerate);
const int enumerate_scan_subsystems_res = udev_enumerate_scan_subsystems(enumerate);
struct udev_list_entry *udev_lst = udev_enumerate_get_list_entry(enumerate);
while (udev_lst != NULL) {
printf("UDEV: %s\n", udev_list_entry_get_name(udev_lst));
udev_lst = udev_list_entry_get_next(udev_lst);
}
return -ENOENT;
}
int init_platform(rc71l_platform_t *const platform) {
platform->udev = NULL;
if (access(platform_input_path, F_OK) != 0) {
fprintf(stderr, "Unable to find the MCU platform mode file %s: modes cannot be switched.\n", platform_input_path);
fprintf(stderr, "Unable to find the MCU platform mode file %s: asus-mcu not found.\n", platform_input_path);
/* create udev object */
platform->udev = udev_new();
if (platform->udev == NULL) {
fprintf(stderr, "Cannot create udev context: mode switch will not be available.\n");
return -ENOENT;
}
if (find_device(platform->udev) != 0) {
fprintf(stderr, "Cannot locate asus-mcu device: mode switch will not be available.\n");
return -ENOENT;
} else {
// TODO: populate the following
platform->modes_count = 0;
platform->mode = 0;
return 0;
}
return -ENOENT;
}