mirror of
https://github.com/dingusdev/dingusppc.git
synced 2024-12-26 09:29:28 +00:00
124 lines
4.7 KiB
C++
124 lines
4.7 KiB
C++
/*
|
|
DingusPPC - The Experimental PowerPC Macintosh emulator
|
|
Copyright (C) 2018-21 divingkatae and maximum
|
|
(theweirdo) spatium
|
|
|
|
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
|
|
|
|
This program 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.
|
|
|
|
This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/** @file DisplayID class definitions.
|
|
|
|
DisplayID is a special purpose class for handling display
|
|
identification (aka Monitor Plug-n-Play) as required by
|
|
video cards.
|
|
|
|
DisplayID provides two methods for display identification:
|
|
- Apple monitor sense as described in the Technical Note HW30
|
|
- Display Data Channel (DDC) standardized by VESA
|
|
*/
|
|
|
|
#ifndef DISPLAY_ID_H
|
|
#define DISPLAY_ID_H
|
|
|
|
#include <cinttypes>
|
|
|
|
/* Supported diplay ID methods. */
|
|
enum class Disp_Id_Kind {
|
|
AppleSense,
|
|
DDC2B,
|
|
};
|
|
|
|
/** I2C bus states. */
|
|
enum I2CState : uint8_t {
|
|
STOP = 0, /* transaction started */
|
|
START = 1, /* transaction ended (idle) */
|
|
DEV_ADDR = 2, /* receiving device address */
|
|
REG_ADDR = 3, /* receiving register address */
|
|
DATA = 4, /* sending/receiving data */
|
|
ACK = 5, /* sending/receiving acknowledge */
|
|
NACK = 6 /* no acknowledge (error) */
|
|
};
|
|
|
|
|
|
class DisplayID {
|
|
public:
|
|
DisplayID();
|
|
DisplayID(uint8_t std_code, uint8_t ext_code);
|
|
~DisplayID() = default;
|
|
|
|
uint8_t read_monitor_sense(uint8_t levels, uint8_t dirs);
|
|
|
|
protected:
|
|
uint8_t set_result(uint8_t sda, uint8_t scl);
|
|
uint8_t update_ddc_i2c(uint8_t sda, uint8_t scl);
|
|
|
|
private:
|
|
Disp_Id_Kind id_kind;
|
|
|
|
uint8_t std_sense_code;
|
|
uint8_t ext_sense_code;
|
|
|
|
/* DDC I2C variables. */
|
|
uint8_t next_state;
|
|
uint8_t prev_state;
|
|
uint8_t last_sda;
|
|
uint8_t last_scl;
|
|
int bit_count; /* number of bits processed so far */
|
|
uint8_t byte; /* byte value being currently transferred */
|
|
uint8_t dev_addr; /* current device address */
|
|
uint8_t reg_addr; /* current register address */
|
|
uint8_t* data_ptr; /* ptr to data byte to be transferred next */
|
|
|
|
/*
|
|
uint8_t edid[128] = {
|
|
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x06, 0x10, 0x02, 0x9d, 0x01, 0x01, 0x01,
|
|
0x01, 0x08, 0x09, 0x01, 0x01, 0x68, 0x20, 0x18, 0x28, 0xe8, 0x04, 0x89, 0xa0, 0x57, 0x4a,
|
|
0x9b, 0x26, 0x12, 0x48, 0x4c, 0x31, 0x2b, 0x80, 0x31, 0x59, 0x45, 0x59, 0x61, 0x59, 0xa9,
|
|
0x40, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x60, 0x16, 0x40, 0x40, 0x31, 0x70,
|
|
0x2b, 0x20, 0x20, 0x40, 0x23, 0x00, 0x38, 0xea, 0x10, 0x00, 0x00, 0x18, 0x48, 0x3f, 0x40,
|
|
0x32, 0x62, 0xb0, 0x32, 0x40, 0x40, 0xc2, 0x13, 0x00, 0x38, 0xea, 0x10, 0x00, 0x00, 0x18,
|
|
0x00, 0x00, 0x00, 0xfd, 0x00, 0x30, 0xa0, 0x1e, 0x55, 0x10, 0x00, 0x0a, 0x20, 0x20, 0x20,
|
|
0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x53, 0x74, 0x75, 0x64, 0x69, 0x6f, 0x44,
|
|
0x73, 0x70, 0x6c, 0x79, 0x31, 0x37, 0x00, 0x19};*/
|
|
|
|
uint8_t edid[128] = {
|
|
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x34, 0x38, 0x09, 0x06,
|
|
0x1b, 0x06, 0x00, 0x00, 0x03, 0x0c, 0x01, 0x02, 0x68, 0x1e, 0x17, 0x78,
|
|
0xea, 0x6d, 0x8c, 0x98, 0x59, 0x50, 0x93, 0x26, 0x20, 0x4c, 0x52, 0xbf,
|
|
0xee, 0x00, 0x31, 0x4f, 0x45, 0x4f, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
|
|
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0xc3, 0x1e, 0x00, 0x20, 0x41, 0x00,
|
|
0x20, 0x30, 0x10, 0x60, 0x13, 0x00, 0x30, 0xe4, 0x10, 0x00, 0x00, 0x1e,
|
|
0x00, 0x00, 0x00, 0xfd, 0x00, 0x37, 0x4b, 0x1f, 0x3c, 0x08, 0x00, 0x0a,
|
|
0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x31,
|
|
0x30, 0x20, 0x31, 0x35, 0x20, 0x34, 0x35, 0x0a, 0x20, 0x20, 0x20, 0x20,
|
|
0x00, 0x00, 0x00, 0xfe, 0x00, 0x4d, 0x61, 0x78, 0x64, 0x61, 0x74, 0x61,
|
|
0x31, 0x30, 0x31, 0x35, 0x34, 0x35, 0x00, 0xf4
|
|
};
|
|
|
|
/* More EDID:
|
|
00ff ffff ffff ff00 5a63 5151 0341 0000
|
|
240a 0102 1f28 1eb3 e850 69a7 5148 9b24
|
|
0e48 4cff ff80 3159 4559 6159 714f 8140
|
|
8199 a940 a94f 0000 00ff 0053 5a30 3336
|
|
3136 3634 330a 2020 0000 00fd 0032 b41e
|
|
61ff 000a 2020 2020 2020 0000 00fc 0056
|
|
6965 7753 6f6e 6963 2047 3831 0000 00fc
|
|
0030 2d34 4d0a 2020 2020 2020 2020 00f7
|
|
*/
|
|
};
|
|
|
|
#endif /* DISPLAY_ID_H */
|