IFTU Registers

From Vita Development Wiki
Jump to navigation Jump to search

MMIO Interfaces

Name Physical address
SceIftu0RegA (OLED FB) 0xE5020000
SceIftu0RegB 0xE5021000
SceIftuc0Reg 0xE5022000
SceIftu1RegA (HDMI FB) 0xE5030000
SceIftu1RegB 0xE5031000
SceIftuc1Reg 0xE5032000
SceIftu2Reg 0xE5040000

It looks like the display controller has 4 overlay planes (Iftu0RegA, Iftu0RegB, Iftu1RegA, Iftu0RegB) and 1 cursor plane (Iftu2Reg)?

Registers

IftuRegs

Offset Size Description
0x000 4 Control register: bit 0 = enable?, bit 2 = ??, bit 3 = ??
0x004 4 CRTC mask: bit 0 = enable scanout to engine/CRTC of OLED/LCD, bit 1 = enable scanout to engine/CRTC of HDMI
0x040 4 Interrupts (read = triggered interrupts, write = clear interrupt)
0x050 4 ??
0x08C 4 Alpha value (transparency) from 0x00 to 0xFF
0x0A0 4 Alpha control: (bit 0 = disable alpha blending)
0x200 + n * 0x100 + 0x00 4 Physical address
0x200 + n * 0x100 + 0x04 4 Unknown
0x200 + n * 0x100 + 0x40 4 Pixelformat (0x10 = A8B8G8R8)
0x200 + n * 0x100 + 0x44 4 Width (aligned to 16)
0x200 + n * 0x100 + 0x48 4 Height (aligned to 8)
0x200 + n * 0x100 + 0x4C 4 ??
0x200 + n * 0x100 + 0x54 4 Leftover stride
0x200 + n * 0x100 + 0x58 4 ??
0x200 + n * 0x100 + 0x60 4 Vertical front porch
0x200 + n * 0x100 + 0x64 4 Vertical back porch
0x200 + n * 0x100 + 0x68 4 Horizontal front porch
0x200 + n * 0x100 + 0x6C 4 Horizontal back porch
0x200 + n * 0x100 + 0xC0 4 Scanout source X (in 16.16 fixed point format)
0x200 + n * 0x100 + 0xC4 4 Scanout source Y (in 16.16 fixed point format)
0x200 + n * 0x100 + 0xC8 4 Scanout source height (in 16.16 fixed point format)
0x200 + n * 0x100 + 0xCC 4 Scanout source width (in 16.16 fixed point format)
0x200 + n * 0x100 + 0xD0 4 ??

Where n can be 0 and 1. n = 0 configures the CRTC 0 (OLED/LCD) scanout, n = 1 configures the CRTC 1 (HDMI) scanout.

IftucRegs (control registers?)

Offset Size Description
0x04 4 Control register. bit 0 = enable?
0x10 4 bit 0 = Enable Engine 0 (OLED/LCD) or Engine 1 (HDMI)
0x20 4 Control register 2? bit 2 = enable alpha/brightness