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Reintroduce TGUI DDC

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This commit is contained in:
RichardG867 2021-11-05 20:45:34 -03:00
parent 355c26efa8
commit a34ebbc44c
1 changed files with 31 additions and 11 deletions

20
src/video/vid_tgui9440.c

@ -479,6 +479,10 @@ tgui_out(uint16_t addr, uint8_t val, void *p)
tgui_recalcmapping(tgui);
break;
case 0x37:
i2c_gpio_set(tgui->i2c, (val & 0x02) || !(val & 0x04), (val & 0x01) || !(val & 0x08));
break;
case 0x40: case 0x41: case 0x42: case 0x43:
case 0x44: case 0x45: case 0x46: case 0x47:
if (tgui->type >= TGUI_9440) {
@ -602,6 +606,16 @@ tgui_in(uint16_t addr, void *p)
return svga->crtcreg;
case 0x3D5:
temp = svga->crtc[svga->crtcreg];
if (!(svga->crtc[0x37] & 0x04)) {
temp &= 0xfd;
if (i2c_gpio_get_scl(tgui->i2c))
temp |= 0x02;
}
if (!(svga->crtc[0x37] & 0x08)) {
temp &= 0xfe;
if (i2c_gpio_get_sda(tgui->i2c))
temp |= 0x01;
}
return temp;
case 0x3d8:
return tgui->tgui_3d8;
@ -2999,6 +3013,9 @@ static void *tgui_init(const device_t *info)
tgui->pci_regs[0x32] = 0x0c;
tgui->pci_regs[0x33] = 0x00;
tgui->i2c = i2c_gpio_init("ddc_tgui9440");
tgui->ddc = ddc_init(i2c_gpio_get_bus(tgui->i2c));
if (tgui->type >= TGUI_9440)
svga->packed_chain4 = 1;
@ -3026,6 +3043,9 @@ void tgui_close(void *p)
svga_close(&tgui->svga);
ddc_close(tgui->ddc);
i2c_gpio_close(tgui->i2c);
free(tgui);
}