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Define EDID from config macros

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This commit is contained in:
Wenting Zhang 2023-12-07 20:36:45 -05:00
parent b323d10693
commit 56b97dc0e0
3 changed files with 64 additions and 18 deletions
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66
fw/edid.h
View file

@ -1,15 +1,53 @@
const char edid[129] = { #include "config.h"
0x00,
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x6a, 0x12, 0x01, char edid[129] = {
0x00, 0x42, 0x4b, 0x1d, 0x00, 0x01, 0x20, 0x01, 0x03, 0x81, 0x1b, 0x00, // register number, not part of EDID
0x14, 0x78, 0x06, 0xee, 0x95, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, // fixed header (0-7)
0x50, 0x54, 0x00, 0x00, 0x00, 0xa9, 0x40, 0x01, 0x00, 0x01, 0x00, 0x6a, 0x12, // manufacturer ID (8-9)
0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x48, 0x01, 0x00, // product code (10-11)
0x3f, 0x40, 0x30, 0x62, 0xb0, 0x32, 0x40, 0x40, 0xc0, 0x13, 0x00, 0x42, 0x4b, 0x1d, 0x00, // serial number (12-15)
0x10, 0xcb, 0x10, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x01, // week of manufacture (16)
0x50, 0x61, 0x70, 0x65, 0x72, 0x20, 0x4d, 0x6f, 0x6e, 0x69, 0x74, 0x20, // year of manufacture (17)
0x6f, 0x72, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x01, // EDID version (18)
0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x03, // EDID revision (19)
0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x85, // display parameter (20)
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3b (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)
}; };

12
fw/ptn3460.c
View file

@ -46,6 +46,14 @@ 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);
if (result != 129) { if (result != 129) {
@ -65,7 +73,7 @@ void ptn3460_write(uint8_t reg, uint8_t val) {
} }
} }
void ptn3460_init() { void ptn3460_init(void) {
gpio_init(PTN3460_HPD_PIN); gpio_init(PTN3460_HPD_PIN);
gpio_set_dir(PTN3460_HPD_PIN, GPIO_IN); gpio_set_dir(PTN3460_HPD_PIN, GPIO_IN);
gpio_pull_down(PTN3460_HPD_PIN); gpio_pull_down(PTN3460_HPD_PIN);
@ -104,6 +112,6 @@ void ptn3460_init() {
}*/ }*/
} }
bool ptn3460_is_valid() { bool ptn3460_is_valid(void) {
return gpio_get(PTN3460_VALID_PIN); return gpio_get(PTN3460_VALID_PIN);
} }

4
fw/ptn3460.h
View file

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