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/*
* Copyright 2010, Intel Corporation
*
* This file is part of PowerTOP
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
* or just google for it.
*
* Authors:
* Arjan van de Ven <arjan@linux.intel.com>
*/
#include "tuning.h"
#include "tunable.h"
#include "unistd.h"
#include "tuningusb.h"
#include <string.h>
#include <dirent.h>
#include <utility>
#include <iostream>
#include <fstream>
#include <limits.h>
#include "../lib.h"
usb_tunable::usb_tunable(const char *path, const char *name) : tunable("", 0.9, _("Good"), _("Bad"), _("Unknown"))
{
ifstream file;
char filename[PATH_MAX];
char vendor[2048];
char product[2048];
string str1, str2;
snprintf(usb_path, sizeof(usb_path), "%s/power/control", path);
vendor[0] = 0;
product[0] = 0;
str1 = read_sysfs_string("%s/idVendor", path);
str2 = read_sysfs_string("%s/idProduct", path);
snprintf(desc, sizeof(desc), _("Autosuspend for unknown USB device %s (%s:%s)"), name, str1.c_str(), str2.c_str());
snprintf(filename, sizeof(filename), "%s/manufacturer", path);
file.open(filename, ios::in);
if (file) {
file.getline(vendor, 2047);
if (strstr(vendor, "Linux "))
vendor[0] = 0;
file.close();
};
snprintf(filename, sizeof(filename), "%s/product", path);
file.open(filename, ios::in);
if (file) {
file.getline(product, 2040);
file.close();
};
if (strlen(vendor) && strlen(product))
snprintf(desc, sizeof(desc), _("Autosuspend for USB device %s [%s]"), product, vendor);
else if (strlen(product))
snprintf(desc, sizeof(desc), _("Autosuspend for USB device %s [%s]"), product, name);
else if (strlen(vendor))
snprintf(desc, sizeof(desc), _("Autosuspend for USB device %s [%s]"), vendor, name);
snprintf(toggle_good, sizeof(toggle_good), "echo 'auto' > '%s';", usb_path);
snprintf(toggle_bad, sizeof(toggle_bad), "echo 'on' > '%s';", usb_path);
}
int usb_tunable::good_bad(void)
{
string content;
content = read_sysfs_string(usb_path);
if (strcmp(content.c_str(), "auto") == 0)
return TUNE_GOOD;
return TUNE_BAD;
}
void usb_tunable::toggle(void)
{
int good;
good = good_bad();
if (good == TUNE_GOOD) {
write_sysfs(usb_path, "on");
return;
}
write_sysfs(usb_path, "auto");
}
const char *usb_tunable::toggle_script(void)
{
int good;
good = good_bad();
if (good == TUNE_GOOD) {
return toggle_bad;
}
return toggle_good;
}
static void add_usb_callback(const char *d_name)
{
class usb_tunable *usb;
char filename[PATH_MAX];
DIR *dir;
snprintf(filename, sizeof(filename), "/sys/bus/usb/devices/%s/power/control", d_name);
if (access(filename, R_OK) != 0)
return;
snprintf(filename, sizeof(filename), "/sys/bus/usb/devices/%s/power/active_duration", d_name);
if (access(filename, R_OK)!=0)
return;
/* every interface of this device should support autosuspend */
snprintf(filename, sizeof(filename), "/sys/bus/usb/devices/%s", d_name);
if ((dir = opendir(filename))) {
struct dirent *entry;
while ((entry = readdir(dir))) {
/* dirname: <busnum>-<devnum>...:<config num>-<interface num> */
if (!isdigit(entry->d_name[0]))
continue;
snprintf(filename, sizeof(filename), "/sys/bus/usb/devices/%s/%s/supports_autosuspend", d_name, entry->d_name);
if (access(filename, R_OK) == 0 && read_sysfs(filename) == 0)
break;
}
closedir(dir);
if (entry)
return;
}
snprintf(filename, sizeof(filename), "/sys/bus/usb/devices/%s", d_name);
usb = new class usb_tunable(filename, d_name);
all_tunables.push_back(usb);
}
void add_usb_tunables(void)
{
process_directory("/sys/bus/usb/devices/", add_usb_callback);
}
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