121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
/*
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* This file is part of Luma3DS
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* Copyright (C) 2016-2020 Aurora Wright, TuxSH
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Additional Terms 7.b and 7.c of GPLv3 apply to this file:
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* * Requiring preservation of specified reasonable legal notices or
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* author attributions in that material or in the Appropriate Legal
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* Notices displayed by works containing it.
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* * Prohibiting misrepresentation of the origin of that material,
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* or requiring that modified versions of such material be marked in
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* reasonable ways as different from the original version.
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*/
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/*
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* Screen init code by dark_samus, bil1s, Normmatt, delebile and others
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* Screen deinit code by tiniVi
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*/
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#include "screen.h"
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#include "config.h"
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#include "memory.h"
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#include "i2c.h"
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#include "utils.h"
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bool needToSetupScreens = true;
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struct fb fbs[2] =
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{
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{
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.top_left = (u8 *)0x18300000,
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.top_right = (u8 *)0x18300000,
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.bottom = (u8 *)0x18346500,
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},
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{
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.top_left = (u8 *)0x18400000,
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.top_right = (u8 *)0x18400000,
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.bottom = (u8 *)0x18446500,
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},
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};
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static const u32 brightness[4] = {0x5F, 0x4C, 0x39, 0x26};
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static volatile Arm11Operation *operation = (volatile Arm11Operation *)0x1FF80004;
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static void invokeArm11Function(Arm11Operation op)
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{
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while(*operation != ARM11_READY);
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*operation = op;
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while(*operation != ARM11_READY);
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}
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void prepareArm11ForFirmlaunch(void)
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{
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invokeArm11Function(PREPARE_ARM11_FOR_FIRMLAUNCH);
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}
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void deinitScreens(void)
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{
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if(ARESCREENSINITIALIZED) invokeArm11Function(DEINIT_SCREENS);
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}
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void updateBrightness(u32 brightnessIndex)
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{
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*(vu32 *)ARM11_PARAMETERS_ADDRESS = brightness[brightnessIndex];
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invokeArm11Function(UPDATE_BRIGHTNESS);
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}
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void swapFramebuffers(bool isAlternate)
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{
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*(volatile bool *)ARM11_PARAMETERS_ADDRESS = isAlternate;
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invokeArm11Function(SWAP_FRAMEBUFFERS);
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}
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void clearScreens(bool isAlternate)
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{
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struct fb *fbTemp = isAlternate ? &fbs[1] : &fbs[0];
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*(volatile struct fb *)ARM11_PARAMETERS_ADDRESS = *fbTemp;
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invokeArm11Function(CLEAR_SCREENS);
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}
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void initScreens(void)
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{
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if(needToSetupScreens)
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{
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if(!ARESCREENSINITIALIZED || bootType == FIRMLAUNCH)
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{
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*(vu32 *)ARM11_PARAMETERS_ADDRESS = brightness[MULTICONFIG(BRIGHTNESS)];
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memcpy((void *)(ARM11_PARAMETERS_ADDRESS + 4), fbs, sizeof(fbs));
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invokeArm11Function(INIT_SCREENS);
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//Turn on backlight
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I2C_writeReg(I2C_DEV_MCU, 0x22, 0x2A);
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wait(5);
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}
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else updateBrightness(MULTICONFIG(BRIGHTNESS));
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memcpy((void *)ARM11_PARAMETERS_ADDRESS, fbs, sizeof(fbs));
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invokeArm11Function(SETUP_FRAMEBUFFERS);
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clearScreens(true);
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needToSetupScreens = false;
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}
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clearScreens(false);
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swapFramebuffers(false);
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}
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