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Initial fw support for lite version

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This commit is contained in:
Wenting 2024-01-15 23:03:25 -05:00
parent cde330abc4
commit 0420623c76
8 changed files with 303 additions and 75 deletions
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21
fw/CMakeLists.txt
View file

@ -7,11 +7,15 @@ set(CMAKE_CXX_STANDARD 17)
# initalize pico_sdk from installed location # initalize pico_sdk from installed location
# (note this can come from environment, CMake cache etc) # (note this can come from environment, CMake cache etc)
set(PICO_SDK_PATH "/Users/wenting/pico/pico-sdk") set(PICO_SDK_PATH "/home/wenting/pico/pico-sdk")
set(PICO_EXTRAS_PATH "/home/wenting/pico/pico-extras")
# Pull in Raspberry Pi Pico SDK (must be before project) # Pull in Raspberry Pi Pico SDK (must be before project)
include(pico_sdk_import.cmake) include(pico_sdk_import.cmake)
# We also need PICO EXTRAS
include(pico_extras_import.cmake)
project(fw C CXX ASM) project(fw C CXX ASM)
# Initialise the Raspberry Pi Pico SDK # Initialise the Raspberry Pi Pico SDK
@ -20,19 +24,20 @@ pico_sdk_init()
# Add executable. Default name is the project name, version 0.1 # Add executable. Default name is the project name, version 0.1
add_executable(fw add_executable(fw
fw.c bitstream.c
utils.c edid.c
fpga.c
fusb302.c fusb302.c
fw.c
max17135.c
power.c power.c
ptn3460.c ptn3460.c
tcpm_driver.c tcpm_driver.c
tps65185.c tps65185.c
max17135.c
bitstream.c
fpga.c
usb_pd_driver.c usb_pd_driver.c
usb_pd_policy.c usb_pd_policy.c
usb_pd_protocol.c usb_pd_protocol.c
utils.c
) )
pico_set_program_name(fw "fw") pico_set_program_name(fw "fw")
@ -42,7 +47,7 @@ pico_enable_stdio_uart(fw 0)
pico_enable_stdio_usb(fw 1) pico_enable_stdio_usb(fw 1)
# Add the standard library to the build # Add the standard library to the build
target_link_libraries(fw pico_stdlib) target_link_libraries(fw pico_stdlib hardware_sleep)
# Add any user requested libraries # Add any user requested libraries
target_link_libraries(fw target_link_libraries(fw
@ -50,6 +55,8 @@ target_link_libraries(fw
hardware_dma hardware_dma
hardware_i2c hardware_i2c
hardware_pwm hardware_pwm
pico_unique_id
pico_i2c_slave
) )
pico_add_extra_outputs(fw) pico_add_extra_outputs(fw)

35
fw/config.h
View file

@ -24,7 +24,9 @@
/* BOARD REVISION CONFIGURATION */ /* BOARD REVISION CONFIGURATION */
// Eariler revisions are not supported // Eariler revisions are not supported
//#define BOARD_REV_R0P5 //#define BOARD_REV_R0P5
#define BOARD_REV_R0P6 //#define BOARD_REV_R0P6
// Lite version uses DVI instead of Type-C DP Alt-mode
#define BOARD_REV_RL0P1
/* SCREEN CONFIGURATION */ /* SCREEN CONFIGURATION */
@ -49,8 +51,15 @@
/* SET BASED ON PREVIOUS DEFINES, DO NOT MODIFY */ /* SET BASED ON PREVIOUS DEFINES, DO NOT MODIFY */
#if defined(BOARD_REV_R0P5) #if defined(BOARD_REV_R0P5)
#define POWER_TPS65185 #define POWER_TPS65185
#define INPUT_TYPEC
#elif defined(BOARD_REV_R0P6) #elif defined(BOARD_REV_R0P6)
#define POWER_GPIO #define POWER_GPIO
// VCOM measurement is not supported
#define INPUT_TYPEC
#elif defined(BOARD_REV_RL0P1)
#define POWER_GPIO
#define POWER_GPIO_VCOM_MEASURE
#define INPUT_DVI
#else #else
#error "Unknown board revision" #error "Unknown board revision"
#endif #endif
@ -122,15 +131,25 @@
#define SCREEN_VSYNC 10 #define SCREEN_VSYNC 10
#elif defined(SCREEN_1600_1200) #elif defined(SCREEN_1600_1200)
// 1600x1200 @ 60, 162MHz DMT // 1600x1200 @ 60, 162MHz DMT
#define SCREEN_CLK 162000 // #define SCREEN_CLK 162000
// #define SCREEN_HACT 1600
// #define SCREEN_VACT 1200
// #define SCREEN_HBLK 560
// #define SCREEN_HFP 64
// #define SCREEN_HSYNC 192
// #define SCREEN_VBLK 50
// #define SCREEN_VFP 1
// #define SCREEN_VSYNC 3
// 1600x1200 @ 60, 124.488MHz CVT-RB-v2
#define SCREEN_CLK 124488
#define SCREEN_HACT 1600 #define SCREEN_HACT 1600
#define SCREEN_VACT 1200 #define SCREEN_VACT 1200
#define SCREEN_HBLK 560 #define SCREEN_HBLK 80
#define SCREEN_HFP 64 #define SCREEN_HFP 8
#define SCREEN_HSYNC 192 #define SCREEN_HSYNC 32
#define SCREEN_VBLK 50 #define SCREEN_VBLK 35
#define SCREEN_VFP 1 #define SCREEN_VFP 21
#define SCREEN_VSYNC 3 #define SCREEN_VSYNC 8
#elif defined(SCREEN_1872_1404) #elif defined(SCREEN_1872_1404)
// 1872x1404 @ 60, 162MHz Custom // 1872x1404 @ 60, 162MHz Custom
#define SCREEN_CLK 162000 #define SCREEN_CLK 162000

151
fw/edid.c Normal file
View file

@ -0,0 +1,151 @@
//
// Copyright 2022 Wenting Zhang <zephray@outlook.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
#include <stdint.h>
#include <pico/stdlib.h>
#include <hardware/i2c.h>
#include <pico/unique_id.h>
#include <pico/i2c_slave.h>
#include "edid.h"
#include "config.h"
#ifdef INPUT_DVI
#define EDID_I2C_ADDRESS (0x50)
#define EDID_I2C (i2c0)
#define EDID_I2C_SDA (0)
#define EDID_I2C_SCL (1)
#endif
static char edid[129] = {
0x00, // register number, not part of EDID
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, // fixed header (0-7)
0x6a, 0x12, // manufacturer ID (8-9)
0x01, 0x00, // product code (10-11)
0x42, 0x4b, 0x1d, 0x00, // serial number (12-15)
0x01, // week of manufacture (16)
0x20, // year of manufacture (17)
0x01, // EDID version (18)
0x03, // EDID revision (19)
0x85, // display parameter (20)
(SCREEN_SIZE_X / 10), // horizontal screen size in cm (21)
(SCREEN_SIZE_Y / 10), // vertical screen size in cm (22)
0x78, // display gamma (23)
0x06, // supported feature (24)
0xee, 0x95, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x50, 0x54, // chromatic (25-34)
0x00, 0x00, 0x00, // established timing (35-37)
(SCREEN_HACT / 8 - 31), // X resolution (38)
SCREEN_ASPECT, // aspect ratio and vertical frequency (39)
0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, // standard timing
0x01, 0x00, 0x01, 0x00, 0x01, 0x00, // standard timing continued
// descriptor 1 (54-71)
((SCREEN_CLK / 10) & 0xff), ((SCREEN_CLK / 10) >> 8), // pixel clock in 10kHz
(SCREEN_HACT & 0xff), // HACT LSB
(SCREEN_HBLK & 0xff), // VBLK LSB
(((SCREEN_HACT >> 8) << 4) | (SCREEN_HBLK >> 8)), // HACT MSB | HBLK MSB
(SCREEN_VACT & 0xff), // VACT LSB
(SCREEN_VBLK & 0xff), // VBLK LSB
(((SCREEN_VACT >> 8) << 4) | (SCREEN_VBLK >> 8)), // VACT MSB | VBLK MSB
(SCREEN_HFP & 0xff), // HFP LSB
(SCREEN_HSYNC & 0xff), // HSYNC LSB
(((SCREEN_VFP & 0xf) << 4) | (SCREEN_VSYNC & 0xf)), // VFP LSB | VSYNC LSB
(((SCREEN_HFP >> 8) << 6) | ((SCREEN_HSYNC >> 8) << 4) |
((SCREEN_VFP >> 4) << 2) | (SCREEN_VSYNC >> 4)), // HFP MSB | HSYNC MSB | VFP MSB | VSYNC MSB
(SCREEN_SIZE_X & 0xff), // Horizontal size in mm LSB
(SCREEN_SIZE_Y & 0xff), // Vertical size in mm LSB
(((SCREEN_SIZE_X >> 8) << 4) | (SCREEN_SIZE_Y >> 8)), // HSIZE MSB | VSIZE LSB
0x00, // Horizontal border pixels
0x00, // Vertical border lines 0x1e,
// descriptor 2 (72-89) display name
0x00, 0x00, 0x00, 0xfc, 0x00, 0x50, 0x61, 0x70, 0x65, 0x72, 0x20,
0x4d, 0x6f, 0x6e, 0x69, 0x74, 0x6f, 0x72,
// descriptor 3 (90-107) display name
0x00, 0x00, 0x00, 0xfc, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20,
0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
// descriptor 4 (108-125) dummy
0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, // number of extensions (126)
0x00 // checksum (127)
};
#ifdef INPUT_DVI
static void edid_i2c_slave_handler(i2c_inst_t *i2c, i2c_slave_event_t event) {
static uint8_t addr = 0;
switch (event) {
case I2C_SLAVE_RECEIVE:
// I2C master has written some data
// EDID is read only, all write are treated as address
addr = i2c_read_byte_raw(i2c);
break;
case I2C_SLAVE_REQUEST:
// I2C master is requesting data
i2c_write_byte_raw(i2c, edid[addr + 1]);
addr++;
if (addr == 128)
addr = 0; // wrap around
break;
case I2C_SLAVE_FINISH:
// I2C master sent stop
// Reset transaction if needed
break;
}
}
#endif
void edid_init() {
// Fill in runtime info
pico_unique_board_id_t board_id;
pico_get_unique_board_id(&board_id);
// Populate serial number with this ID (XORed down to 4 bytes)
edid[13] = board_id.id[0] ^ board_id.id[4];
edid[14] = board_id.id[1] ^ board_id.id[5];
edid[15] = board_id.id[2] ^ board_id.id[6];
edid[16] = board_id.id[3] ^ board_id.id[7];
// Fix checksum in EDID
uint8_t checksum = 0;
for (int i = 1; i < 128; i++) {
checksum += edid[i];
}
checksum = ~checksum + 1;
edid[128] = checksum;
#ifdef INPUT_DVI
// DVI models has DDC I2C connected directly to the RP2040
// EDID ROM emulation is needed
gpio_init(EDID_I2C_SDA);
gpio_init(EDID_I2C_SCL);
gpio_set_function(EDID_I2C_SDA, GPIO_FUNC_I2C);
gpio_set_function(EDID_I2C_SCL, GPIO_FUNC_I2C);
i2c_slave_init(EDID_I2C, EDID_I2C_ADDRESS, &edid_i2c_slave_handler);
// Pull HPD high so host can read the EDID
#endif
}
uint8_t *edid_get_raw() {
return edid;
}

76
fw/edid.h
View file

@ -1,53 +1,25 @@
#include "config.h" //
// Copyright 2022 Wenting Zhang <zephray@outlook.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
#pragma once
char edid[129] = { void edid_init();
0x00, // register number, not part of EDID uint8_t *edid_get_raw();
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, // fixed header (0-7)
0x6a, 0x12, // manufacturer ID (8-9)
0x01, 0x00, // product code (10-11)
0x42, 0x4b, 0x1d, 0x00, // serial number (12-15)
0x01, // week of manufacture (16)
0x20, // year of manufacture (17)
0x01, // EDID version (18)
0x03, // EDID revision (19)
0x85, // display parameter (20)
(SCREEN_SIZE_X / 10), // horizontal screen size in cm (21)
(SCREEN_SIZE_Y / 10), // vertical screen size in cm (22)
0x78, // display gamma (23)
0x06, // supported feature (24)
0xee, 0x95, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x50, 0x54, // chromatic (25-34)
0x00, 0x00, 0x00, // established timing (35-37)
(SCREEN_HACT / 8 - 31), // X resolution (38)
SCREEN_ASPECT, // aspect ratio and vertical frequency (39)
0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, // standard timing
0x01, 0x00, 0x01, 0x00, 0x01, 0x00, // standard timing continued
// descriptor 1 (54-71)
((SCREEN_CLK / 10) & 0xff), ((SCREEN_CLK / 10) >> 8), // pixel clock in 10kHz
(SCREEN_HACT & 0xff), // HACT LSB
(SCREEN_HBLK & 0xff), // VBLK LSB
(((SCREEN_HACT >> 8) << 4) | (SCREEN_HBLK >> 8)), // HACT MSB | HBLK MSB
(SCREEN_VACT & 0xff), // VACT LSB
(SCREEN_VBLK & 0xff), // VBLK LSB
(((SCREEN_VACT >> 8) << 4) | (SCREEN_VBLK >> 8)), // VACT MSB | VBLK MSB
(SCREEN_HFP & 0xff), // HFP LSB
(SCREEN_HSYNC & 0xff), // HSYNC LSB
(((SCREEN_VFP & 0xf) << 4) | (SCREEN_VSYNC & 0xf)), // VFP LSB | VSYNC LSB
(((SCREEN_HFP >> 8) << 6) | ((SCREEN_HSYNC >> 8) << 4) |
((SCREEN_VFP >> 4) << 2) | (SCREEN_VSYNC >> 4)), // HFP MSB | HSYNC MSB | VFP MSB | VSYNC MSB
(SCREEN_SIZE_X & 0xff), // Horizontal size in mm LSB
(SCREEN_SIZE_Y & 0xff), // Vertical size in mm LSB
(((SCREEN_SIZE_X >> 8) << 4) | (SCREEN_SIZE_Y >> 8)), // HSIZE MSB | VSIZE LSB
0x00, // Horizontal border pixels
0x00, // Vertical border lines 0x1e,
// descriptor 2 (72-89) display name
0x00, 0x00, 0x00, 0xfc, 0x00, 0x50, 0x61, 0x70, 0x65, 0x72, 0x20,
0x4d, 0x6f, 0x6e, 0x69, 0x74, 0x6f, 0x72,
// descriptor 3 (90-107) display name
0x00, 0x00, 0x00, 0xfc, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20,
0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
// descriptor 4 (108-125) dummy
0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, // number of extensions (126)
0x00 // checksum (127)
};

17
fw/fw.c
View file

@ -22,6 +22,7 @@
#include <stdio.h> #include <stdio.h>
#include "pico/stdlib.h" #include "pico/stdlib.h"
#include "pico/binary_info.h" #include "pico/binary_info.h"
#include "pico/sleep.h"
#include "hardware/i2c.h" #include "hardware/i2c.h"
#include "config.h" #include "config.h"
#include "utils.h" #include "utils.h"
@ -30,6 +31,7 @@
#include "ptn3460.h" #include "ptn3460.h"
#include "power.h" #include "power.h"
#include "fpga.h" #include "fpga.h"
#include "edid.h"
int main() int main()
{ {
@ -40,6 +42,20 @@ int main()
printf("\n"); printf("\n");
printf("Glider\n"); printf("Glider\n");
// TODO: Unify both input options
#if defined(INPUT_DVI)
power_init();
edid_init();
power_enable(true);
//sleep_run_from_xosc();
//sleep_goto_dormant_until_edge_high(8);
// https://ghubcoder.github.io/posts/awaking-the-pico/
while (1) {
//
}
#elif defined(INPUT_TYPEC)
int result = tcpm_init(0); int result = tcpm_init(0);
if (result) if (result)
fatal("Failed to initialize TCPC\n"); fatal("Failed to initialize TCPC\n");
@ -78,6 +94,7 @@ int main()
printf(dp_valid ? "Input is valid\n" : "Input is invalid\n"); printf(dp_valid ? "Input is valid\n" : "Input is invalid\n");
} }
} }
#endif
return 0; return 0;
} }

62
fw/pico_extras_import.cmake Normal file
View file

@ -0,0 +1,62 @@
# This is a copy of <PICO_EXTRAS_PATH>/external/pico_extras_import.cmake
# This can be dropped into an external project to help locate pico-extras
# It should be include()ed prior to project()
if (DEFINED ENV{PICO_EXTRAS_PATH} AND (NOT PICO_EXTRAS_PATH))
set(PICO_EXTRAS_PATH $ENV{PICO_EXTRAS_PATH})
message("Using PICO_EXTRAS_PATH from environment ('${PICO_EXTRAS_PATH}')")
endif ()
if (DEFINED ENV{PICO_EXTRAS_FETCH_FROM_GIT} AND (NOT PICO_EXTRAS_FETCH_FROM_GIT))
set(PICO_EXTRAS_FETCH_FROM_GIT $ENV{PICO_EXTRAS_FETCH_FROM_GIT})
message("Using PICO_EXTRAS_FETCH_FROM_GIT from environment ('${PICO_EXTRAS_FETCH_FROM_GIT}')")
endif ()
if (DEFINED ENV{PICO_EXTRAS_FETCH_FROM_GIT_PATH} AND (NOT PICO_EXTRAS_FETCH_FROM_GIT_PATH))
set(PICO_EXTRAS_FETCH_FROM_GIT_PATH $ENV{PICO_EXTRAS_FETCH_FROM_GIT_PATH})
message("Using PICO_EXTRAS_FETCH_FROM_GIT_PATH from environment ('${PICO_EXTRAS_FETCH_FROM_GIT_PATH}')")
endif ()
if (NOT PICO_EXTRAS_PATH)
if (PICO_EXTRAS_FETCH_FROM_GIT)
include(FetchContent)
set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR})
if (PICO_EXTRAS_FETCH_FROM_GIT_PATH)
get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_EXTRAS_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
endif ()
FetchContent_Declare(
PICO_EXTRAS
GIT_REPOSITORY https://github.com/raspberrypi/pico-extras
GIT_TAG master
)
if (NOT PICO_EXTRAS)
message("Downloading PICO EXTRAS")
FetchContent_Populate(PICO_EXTRAS)
set(PICO_EXTRAS_PATH ${PICO_EXTRAS_SOURCE_DIR})
endif ()
set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
else ()
if (PICO_SDK_PATH AND EXISTS "${PICO_SDK_PATH}/../pico-extras")
set(PICO_EXTRAS_PATH ${PICO_SDK_PATH}/../pico-extras)
message("Defaulting PICO_EXTRAS_PATH as sibling of PICO_SDK_PATH: ${PICO_EXTRAS_PATH}")
else()
message(FATAL_ERROR
"PICO EXTRAS location was not specified. Please set PICO_EXTRAS_PATH or set PICO_EXTRAS_FETCH_FROM_GIT to on to fetch from git."
)
endif()
endif ()
endif ()
set(PICO_EXTRAS_PATH "${PICO_EXTRAS_PATH}" CACHE PATH "Path to the PICO EXTRAS")
set(PICO_EXTRAS_FETCH_FROM_GIT "${PICO_EXTRAS_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of PICO EXTRAS from git if not otherwise locatable")
set(PICO_EXTRAS_FETCH_FROM_GIT_PATH "${PICO_EXTRAS_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download EXTRAS")
get_filename_component(PICO_EXTRAS_PATH "${PICO_EXTRAS_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
if (NOT EXISTS ${PICO_EXTRAS_PATH})
message(FATAL_ERROR "Directory '${PICO_EXTRAS_PATH}' not found")
endif ()
set(PICO_EXTRAS_PATH ${PICO_EXTRAS_PATH} CACHE PATH "Path to the PICO EXTRAS" FORCE)
add_subdirectory(${PICO_EXTRAS_PATH} pico_extras)

14
fw/ptn3460.c
View file

@ -20,12 +20,15 @@
// SOFTWARE. // SOFTWARE.
// //
#include <stdint.h> #include <stdint.h>
#include <stdio.h>
#include "pico/stdlib.h" #include "pico/stdlib.h"
#include "hardware/i2c.h" #include "hardware/i2c.h"
#include "ptn3460.h" #include "ptn3460.h"
#include "utils.h" #include "utils.h"
#include "edid.h" #include "edid.h"
#ifdef INPUT_TYPEC
#define PTN3460_I2C_ADDRESS (0x60) #define PTN3460_I2C_ADDRESS (0x60)
#define PTN3460_I2C (i2c0) #define PTN3460_I2C (i2c0)
#define PTN3460_HPD_PIN (8) #define PTN3460_HPD_PIN (8)
@ -46,13 +49,6 @@ void ptn3460_select_edid_emulation(uint8_t id) {
void ptn3460_load_edid(uint8_t *edid) { void ptn3460_load_edid(uint8_t *edid) {
int result; int result;
// Fix checksum in EDID
uint8_t checksum = 0;
for (int i = 1; i < 128; i++) {
checksum += edid[i];
}
checksum = ~checksum + 1;
edid[128] = checksum;
result = i2c_write_blocking(PTN3460_I2C, PTN3460_I2C_ADDRESS, result = i2c_write_blocking(PTN3460_I2C, PTN3460_I2C_ADDRESS,
edid, 129, false); edid, 129, false);
@ -96,7 +92,7 @@ void ptn3460_init(void) {
printf("PTN3460 up after %d ms\n", ticks); printf("PTN3460 up after %d ms\n", ticks);
// Enable EDID emulation // Enable EDID emulation
ptn3460_select_edid_emulation(0); ptn3460_select_edid_emulation(0);
ptn3460_load_edid(edid); ptn3460_load_edid(edid_get_raw());
//ptn3460_write(0x80, 0x02); // Set AUX reverse //ptn3460_write(0x80, 0x02); // Set AUX reverse
ptn3460_write(0x81, 0x29); // 18bpp, clock on odd bus, dual channel ptn3460_write(0x81, 0x29); // 18bpp, clock on odd bus, dual channel
@ -115,3 +111,5 @@ void ptn3460_init(void) {
bool ptn3460_is_valid(void) { bool ptn3460_is_valid(void) {
return gpio_get(PTN3460_VALID_PIN); return gpio_get(PTN3460_VALID_PIN);
} }
#endif

2
fw/ptn3460.h
View file

@ -21,5 +21,7 @@
// //
#pragma once #pragma once
#ifdef INPUT_TYPEC
void ptn3460_init(void); void ptn3460_init(void);
bool ptn3460_is_valid(void); bool ptn3460_is_valid(void);
#endif