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/*
* Copyright 2017 The UBports project
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3, as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY, 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. If not, see <http://www.gnu.org/licenses/>.
*
* Authors:
* Marius Gripsgard <marius@ubports.com>
*/
#include "flashlight.h"
#include <gio/gio.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#define QCOM_ENABLE "255"
#define QCOM_DISABLE "0"
#define SIMPLE_ENABLE "1"
#define SIMPLE_DISABLE "0"
const size_t qcom_sysfs_size = 7;
const char* const qcom_sysfs[] = {"/sys/class/leds/torch-light/brightness",
"/sys/class/leds/led:flash_torch/brightness",
"/sys/class/leds/flashlight/brightness",
"/sys/class/leds/torch-light0/brightness",
"/sys/class/leds/torch-light1/brightness",
"/sys/class/leds/led:torch_0/brightness",
"/sys/class/leds/led:torch_1/brightness"};
const size_t qcom_switch_size = 2;
const char* const qcom_switch[] = {"/sys/class/leds/led:switch/brightness",
"/sys/class/leds/led:switch_0/brightness"};
const size_t simple_sysfs_size = 2;
const char* const simple_sysfs[] = {"/sys/class/flashlight_core/flashlight/flashlight_torch",
"/sys/class/leds/white:flash/brightness"};
char* flash_sysfs_path = NULL;
char* qcom_switch_path = NULL;
enum TorchType torch_type = SIMPLE;
gboolean activated = 0;
int
set_sysfs_path()
{
for (size_t i = 0; i < qcom_sysfs_size; i++) {
if (access(qcom_sysfs[i], F_OK ) != -1){
flash_sysfs_path = (char*)qcom_sysfs[i];
torch_type = QCOM;
/* Qualcomm torch; determine switch file (if one is needed) */
for (size_t i = 0; i < qcom_switch_size; i++) {
if (access(qcom_switch[i], F_OK ) != -1)
qcom_switch_path = (char*)qcom_switch[i];
}
return 1;
}
}
for (size_t i = 0; i < simple_sysfs_size; i++) {
if (access(simple_sysfs[i], F_OK ) != -1){
flash_sysfs_path = (char*)simple_sysfs[i];
return 1;
}
}
return 0;
}
gboolean
flashlight_activated()
{
return activated;
}
int
toggle_flashlight_action_qcom()
{
FILE *fd1 = NULL, *fd2 = NULL;
int needs_enable;
fd1 = fopen(flash_sysfs_path, "w");
if (fd1 != NULL) {
needs_enable = access(qcom_switch_path, F_OK ) != -1;
if (needs_enable)
fd2 = fopen(qcom_switch_path, "w");
if (activated)
if (needs_enable && fd2 != NULL)
fprintf(fd2, "0");
else
fprintf(fd1, QCOM_DISABLE);
else {
fprintf(fd1, QCOM_ENABLE);
if (needs_enable && fd2 != NULL)
fprintf(fd2, "1");
}
fclose(fd1);
if (fd2 !=NULL)
fclose(fd2);
return 1;
}
return 0;
}
int
toggle_flashlight_action_simple()
{
FILE *fd = NULL;
fd = fopen(flash_sysfs_path, "w");
if (fd != NULL) {
fprintf(fd, activated ? SIMPLE_DISABLE : SIMPLE_ENABLE);
fclose(fd);
return 1;
}
return 0;
}
void
toggle_flashlight_action(GAction *action,
GVariant *parameter G_GNUC_UNUSED,
gpointer data G_GNUC_UNUSED)
{
GVariant *state;
int toggled;
if (!set_sysfs_path())
return;
state = g_action_get_state(action);
activated = g_variant_get_boolean(state);
g_variant_unref(state);
if (torch_type == QCOM)
toggled = toggle_flashlight_action_qcom();
else
toggled = toggle_flashlight_action_simple();
if (toggled)
g_action_change_state(action, g_variant_new_boolean(!activated));
}
int
flashlight_supported()
{
return set_sysfs_path();
}
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