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/*
Copyright 2016-2019 Arisotura
This file is part of melonDS.
melonDS 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, either version 3 of the License, or (at your option)
any later version.
melonDS 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 melonDS. If not, see http://www.gnu.org/licenses/.
*/
#include <stdio.h>
#include <string.h>
#include "DSi_Camera.h"
DSi_Camera* DSi_Camera0; // 78 / facing outside
DSi_Camera* DSi_Camera1; // 7A / selfie cam
bool DSi_Camera::Init()
{
DSi_Camera0 = new DSi_Camera(0);
DSi_Camera1 = new DSi_Camera(1);
return true;
}
void DSi_Camera::DeInit()
{
delete DSi_Camera0;
delete DSi_Camera1;
}
void DSi_Camera::Reset()
{
DSi_Camera0->ResetCam();
DSi_Camera1->ResetCam();
}
DSi_Camera::DSi_Camera(u32 num)
{
Num = num;
}
DSi_Camera::~DSi_Camera()
{
//
}
void DSi_Camera::ResetCam()
{
DataPos = 0;
RegAddr = 0;
RegData = 0;
PLLCnt = 0;
StandbyCnt = 0x4029; // checkme
}
void DSi_Camera::Start()
{
}
u8 DSi_Camera::Read(bool last)
{
u8 ret;
if (DataPos < 2)
{
printf("DSi_Camera: WHAT??\n");
ret = 0;
}
else
{
if (DataPos & 0x1)
{
ret = RegData & 0xFF;
RegAddr += 2; // checkme
}
else
{
RegData = ReadReg(RegAddr);
ret = RegData >> 8;
}
}
if (last) DataPos = 0;
else DataPos++;
return ret;
}
void DSi_Camera::Write(u8 val, bool last)
{
if (DataPos < 2)
{
if (DataPos == 0)
RegAddr = val << 8;
else
RegAddr |= val;
if (RegAddr & 0x1) printf("DSi_Camera: !! UNALIGNED REG ADDRESS %04X\n", RegAddr);
}
else
{
if (DataPos & 0x1)
{
RegData |= val;
WriteReg(RegAddr, RegData);
RegAddr += 2; // checkme
}
else
{
RegData = val << 8;
}
}
if (last) DataPos = 0;
else DataPos++;
}
u16 DSi_Camera::ReadReg(u16 addr)
{
switch (addr)
{
case 0x0000: return 0x2280; // chip ID
case 0x0014: return PLLCnt;
case 0x0018: return StandbyCnt;
case 0x301A: return ((~StandbyCnt) & 0x4000) >> 12;
}
printf("DSi_Camera%d: unknown read %04X\n", Num, addr);
return 0;
}
void DSi_Camera::WriteReg(u16 addr, u16 val)
{
switch (addr)
{
case 0x0014:
// shouldn't be instant either?
val &= 0x7FFF;
val |= ((val & 0x0002) << 14);
PLLCnt = val;
return;
case 0x0018:
// TODO: this shouldn't be instant, but uh
val &= 0x003F;
val |= ((val & 0x0001) << 14);
StandbyCnt = val;
return;
}
printf("DSi_Camera%d: unknown write %04X %04X\n", Num, addr, val);
}
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