| /* |
| * heathrow.h: definitions for using the "Heathrow" I/O controller chip. |
| * |
| * Grabbed from Open Firmware definitions on a PowerBook G3 Series |
| * |
| * Copyright (C) 1997 Paul Mackerras. |
| */ |
| |
| /* Front light color on Yikes/B&W G3. 32 bits */ |
| #define HEATHROW_FRONT_LIGHT 0x32 /* (set to 0 or 0xffffffff) */ |
| |
| /* Brightness/contrast (gossamer iMac ?). 8 bits */ |
| #define HEATHROW_BRIGHTNESS_CNTL 0x32 |
| #define HEATHROW_CONTRAST_CNTL 0x33 |
| |
| /* offset from ohare base for feature control register */ |
| #define HEATHROW_MBCR 0x34 /* Media bay control */ |
| #define HEATHROW_FCR 0x38 /* Feature control */ |
| #define HEATHROW_AUX_CNTL_REG 0x3c /* Aux control */ |
| |
| /* |
| * Bits in feature control register. |
| * Bits postfixed with a _N are in inverse logic |
| */ |
| #define HRW_SCC_TRANS_EN_N 0x00000001 /* Also controls modem power */ |
| #define HRW_BAY_POWER_N 0x00000002 |
| #define HRW_BAY_PCI_ENABLE 0x00000004 |
| #define HRW_BAY_IDE_ENABLE 0x00000008 |
| #define HRW_BAY_FLOPPY_ENABLE 0x00000010 |
| #define HRW_IDE0_ENABLE 0x00000020 |
| #define HRW_IDE0_RESET_N 0x00000040 |
| #define HRW_BAY_DEV_MASK 0x0000001c |
| #define HRW_BAY_RESET_N 0x00000080 |
| #define HRW_IOBUS_ENABLE 0x00000100 /* Internal IDE ? */ |
| #define HRW_SCC_ENABLE 0x00000200 |
| #define HRW_MESH_ENABLE 0x00000400 |
| #define HRW_SWIM_ENABLE 0x00000800 |
| #define HRW_SOUND_POWER_N 0x00001000 |
| #define HRW_SOUND_CLK_ENABLE 0x00002000 |
| #define HRW_SCCA_IO 0x00004000 |
| #define HRW_SCCB_IO 0x00008000 |
| #define HRW_PORT_OR_DESK_VIA_N 0x00010000 /* This one is 0 on PowerBook */ |
| #define HRW_PWM_MON_ID_N 0x00020000 /* ??? (0) */ |
| #define HRW_HOOK_MB_CNT_N 0x00040000 /* ??? (0) */ |
| #define HRW_SWIM_CLONE_FLOPPY 0x00080000 /* ??? (0) */ |
| #define HRW_AUD_RUN22 0x00100000 /* ??? (1) */ |
| #define HRW_SCSI_LINK_MODE 0x00200000 /* Read ??? (1) */ |
| #define HRW_ARB_BYPASS 0x00400000 /* Disable internal PCI arbitrer */ |
| #define HRW_IDE1_RESET_N 0x00800000 /* Media bay */ |
| #define HRW_SLOW_SCC_PCLK 0x01000000 /* ??? (0) */ |
| #define HRW_RESET_SCC 0x02000000 |
| #define HRW_MFDC_CELL_ENABLE 0x04000000 /* ??? (0) */ |
| #define HRW_USE_MFDC 0x08000000 /* ??? (0) */ |
| #define HRW_BMAC_IO_ENABLE 0x60000000 /* two bits, not documented in OF */ |
| #define HRW_BMAC_RESET 0x80000000 /* not documented in OF */ |
| |
| /* We OR those features at boot on desktop G3s */ |
| #define HRW_DEFAULTS (HRW_SCCA_IO | HRW_SCCB_IO | HRW_SCC_ENABLE) |
| |
| /* Looks like Heathrow has some sort of GPIOs as well... */ |
| #define HRW_GPIO_MODEM_RESET 0x6d |
| |
