rpcsx/kernel/cellos/src/sys_gpio.cpp

#include "stdafx.h"

#include "sys_gpio.h"

#include "Emu/Cell/ErrorCodes.h"

LOG_CHANNEL(sys_gpio);

error_code sys_gpio_get(u64 device_id, vm::ptr<u64> value) {
  sys_gpio.trace("sys_gpio_get(device_id=0x%llx, value=*0x%x)", device_id,
                 value);

  if (device_id != SYS_GPIO_LED_DEVICE_ID &&
      device_id != SYS_GPIO_DIP_SWITCH_DEVICE_ID) {
    return CELL_ESRCH;
  }

  // Retail consoles dont have LEDs or DIPs switches, hence always sets 0 in
  // paramenter
  if (!value.try_write(0)) {
    return CELL_EFAULT;
  }

  return CELL_OK;
}

error_code sys_gpio_set(u64 device_id, u64 mask, u64 value) {
  sys_gpio.trace("sys_gpio_set(device_id=0x%llx, mask=0x%llx, value=0x%llx)",
                 device_id, mask, value);

  // Retail consoles dont have LEDs or DIPs switches, hence the syscall can't
  // modify devices's value
  switch (device_id) {
  case SYS_GPIO_LED_DEVICE_ID:
    return CELL_OK;
  case SYS_GPIO_DIP_SWITCH_DEVICE_ID:
    return CELL_EINVAL;
  }

  return CELL_ESRCH;
}