mirror of
https://github.com/libretro/RetroArch.git
synced 2024-05-20 13:27:22 -04:00
115 lines
2.5 KiB
C
115 lines
2.5 KiB
C
/* RetroArch - A frontend for libretro.
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <compat/strl.h>
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#include "../led_driver.h"
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#include "../led_defines.h"
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#include "../../configuration.h"
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typedef struct
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{
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int setup[MAX_LEDS];
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int map[MAX_LEDS];
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} sysled_t;
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/* TODO/FIXME - static globals */
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static sysled_t sys_curins;
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static sysled_t *sys_cur = &sys_curins;
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static void sys_led_init(void)
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{
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int i;
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settings_t *settings = config_get_ptr();
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if (!settings)
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return;
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for (i = 0; i < MAX_LEDS; i++)
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{
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sys_cur->setup[i] = 0;
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sys_cur->map[i] = settings->uints.led_map[i];
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}
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}
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static void sys_led_free(void)
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{
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int i;
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for (i = 0; i < MAX_LEDS; i++)
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{
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sys_cur->setup[i] = 0;
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sys_cur->map[i] = 0;
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}
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}
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static int set_sysled(int sysled, int value)
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{
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FILE *fp;
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char buf[256];
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snprintf(buf, sizeof(buf), "/sys/class/leds/led%d/brightness", sysled);
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/* Failed to set LED? */
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if (!(fp = fopen(buf, "w")))
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return -1;
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/* Simplified: max_brightness could be taken into account */
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/* Pi Zero may have reversed brightness? */
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fprintf(fp, "%d\n", value ? 1 : 0);
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fclose(fp);
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return 1;
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}
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static int setup_sysled(int sysled)
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{
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FILE *fp;
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char buf[256];
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snprintf(buf, sizeof(buf), "/sys/class/leds/led%d/trigger", sysled);
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if (!(fp = fopen(buf, "w")))
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return -1;
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/* TODO: read actual trigger in [] and restore on exit */
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fprintf(fp, "none");
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fclose(fp);
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return 1;
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}
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static void sys_led_set(int led, int state)
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{
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int sysled = 0;
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/* Invalid LED? */
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if ((led < 0) || (led >= MAX_LEDS))
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return;
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sysled = sys_cur->map[led];
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if (sysled < 0)
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return;
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if (sys_cur->setup[led] == 0)
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sys_cur->setup[led] = setup_sysled(sysled);
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if (sys_cur->setup[led] > 0)
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set_sysled(sysled, state);
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}
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const led_driver_t sys_led_driver = {
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sys_led_init,
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sys_led_free,
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sys_led_set,
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"sysled"
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};
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