arch/powerpc/include/asm/heathrow.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_POWERPC_HEATHROW_H
   3 #define _ASM_POWERPC_HEATHROW_H
   4 #ifdef __KERNEL__
   5 /*
   6  * heathrow.h: definitions for using the "Heathrow" I/O controller chip.
   7  *
   8  * Grabbed from Open Firmware definitions on a PowerBook G3 Series
   9  *
  10  * Copyright (C) 1997 Paul Mackerras.
  11  */
  12
  13 /* Front light color on Yikes/B&W G3. 32 bits */
  14 #define HEATHROW_FRONT_LIGHT            0x32 /* (set to 0 or 0xffffffff) */
  15
  16 /* Brightness/contrast (gossamer iMac ?). 8 bits */
  17 #define HEATHROW_BRIGHTNESS_CNTL        0x32
  18 #define HEATHROW_CONTRAST_CNTL          0x33
  19
  20 /* offset from ohare base for feature control register */
  21 #define HEATHROW_MBCR                   0x34    /* Media bay control */
  22 #define HEATHROW_FCR                    0x38    /* Feature control */
  23 #define HEATHROW_AUX_CNTL_REG           0x3c    /* Aux control */
  24
  25 /*
  26  * Bits in feature control register.
  27  * Bits postfixed with a _N are in inverse logic
  28  */
  29 #define HRW_SCC_TRANS_EN_N      0x00000001      /* Also controls modem power */
  30 #define HRW_BAY_POWER_N         0x00000002
  31 #define HRW_BAY_PCI_ENABLE      0x00000004
  32 #define HRW_BAY_IDE_ENABLE      0x00000008
  33 #define HRW_BAY_FLOPPY_ENABLE   0x00000010
  34 #define HRW_IDE0_ENABLE         0x00000020
  35 #define HRW_IDE0_RESET_N        0x00000040
  36 #define HRW_BAY_DEV_MASK        0x0000001c
  37 #define HRW_BAY_RESET_N         0x00000080
  38 #define HRW_IOBUS_ENABLE        0x00000100      /* Internal IDE ? */
  39 #define HRW_SCC_ENABLE          0x00000200
  40 #define HRW_MESH_ENABLE         0x00000400
  41 #define HRW_SWIM_ENABLE         0x00000800
  42 #define HRW_SOUND_POWER_N       0x00001000
  43 #define HRW_SOUND_CLK_ENABLE    0x00002000
  44 #define HRW_SCCA_IO             0x00004000
  45 #define HRW_SCCB_IO             0x00008000
  46 #define HRW_PORT_OR_DESK_VIA_N  0x00010000      /* This one is 0 on PowerBook */
  47 #define HRW_PWM_MON_ID_N        0x00020000      /* ??? (0) */
  48 #define HRW_HOOK_MB_CNT_N       0x00040000      /* ??? (0) */
  49 #define HRW_SWIM_CLONE_FLOPPY   0x00080000      /* ??? (0) */
  50 #define HRW_AUD_RUN22           0x00100000      /* ??? (1) */
  51 #define HRW_SCSI_LINK_MODE      0x00200000      /* Read ??? (1) */
  52 #define HRW_ARB_BYPASS          0x00400000      /* Disable internal PCI arbitrer */
  53 #define HRW_IDE1_RESET_N        0x00800000      /* Media bay */
  54 #define HRW_SLOW_SCC_PCLK       0x01000000      /* ??? (0) */
  55 #define HRW_RESET_SCC           0x02000000
  56 #define HRW_MFDC_CELL_ENABLE    0x04000000      /* ??? (0) */
  57 #define HRW_USE_MFDC            0x08000000      /* ??? (0) */
  58 #define HRW_BMAC_IO_ENABLE      0x60000000      /* two bits, not documented in OF */
  59 #define HRW_BMAC_RESET          0x80000000      /* not documented in OF */
  60
  61 /* We OR those features at boot on desktop G3s */
  62 #define HRW_DEFAULTS            (HRW_SCCA_IO | HRW_SCCB_IO | HRW_SCC_ENABLE)
  63
  64 /* Looks like Heathrow has some sort of GPIOs as well... */
  65 #define HRW_GPIO_MODEM_RESET    0x6d
  66
  67 #endif /* __KERNEL__ */
  68 #endif /* _ASM_POWERPC_HEATHROW_H */