IFTU Registers
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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 | Interrupt enable. bit 0 = first plane, bit 1 = second plane |
| 0x08C | 4 | Alpha value (transparency) from 0x00 to 0xFF |
| 0x0A0 | 4 | Alpha control: (bit 0 = disable alpha blending) |
| 0x180 | 4 | Some flags |
| 0x200 + n * 0x100 + 0x00 | 4 | Physical address |
| 0x200 + n * 0x100 + 0x04 | 4 | Unknown |
| 0x200 + n * 0x100 + 0x24 | 4 | Scanout source X (in (0x100000 / 960) multiples) |
| 0x200 + n * 0x100 + 0x28 | 4 | Scanout source Y (in (0x100000 / 544) multiples) |
| 0x200 + n * 0x100 + 0x40 | 4 | Pixelformat (0x10 = A8B8G8R8) |
| 0x200 + n * 0x100 + 0x44 | 4 | Buffer width (aligned to 16) |
| 0x200 + n * 0x100 + 0x48 | 4 | Buffer height (aligned to 8) |
| 0x200 + n * 0x100 + 0x4C | 4 | Control register. bit 0 = disable plane? |
| 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 + 0x24 | 4 | Scanout source width (in (0x100000 / 960) multiples) |
| 0x200 + n * 0x100 + 0xC4 | 4 | Scanout source height (in (0x100000 / 544) multiples) |
| 0x200 + n * 0x100 + 0xC8 | 4 | Scanout destination X |
| 0x200 + n * 0x100 + 0xCC | 4 | Scanout destination Y |
| 0x200 + n * 0x100 + 0xD0 | 4 | Scanout destination width |
| 0x200 + n * 0x100 + 0xD0 | 4 | Scanout destination height |
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 |
|---|---|---|
| 0x00 | 4 | Control register. bit 0 = enable engine. |
| 0x04 | 4 | Plane control register. bit 0 = enable alpha blending, bit 2 = enable first plane, bit 4 = enable second plane. |
| 0x10 + i * 0x8 + 0x00 | 4 | bit 0 = Enable Engine 0 (OLED/LCD) or Engine 1 (HDMI) ? |
| 0x10 + i * 0x8 + 0x04 | 4 | ?? |
| 0x20 | 4 | Alpha control register. bit 2 = enable alpha blending. |
Where i can be 0 or 1 for RegA or RegB.