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   1 /*
   2  * include/asm-ppc/mpc52xx_psc.h
   3  *
   4  * Definitions of consts/structs to drive the Freescale MPC52xx OnChip
   5  * PSCs. Theses are shared between multiple drivers since a PSC can be
   6  * UART, AC97, IR, I2S, ... So this header is in asm-ppc.
   7  *
   8  *
   9  * Maintainer : Sylvain Munaut <tnt@246tNt.com>
  10  *
  11  * Based/Extracted from some header of the 2.4 originally written by
  12  * Dale Farnsworth <dfarnsworth@mvista.com>
  13  *
  14  * Copyright (C) 2004 Sylvain Munaut <tnt@246tNt.com>
  15  * Copyright (C) 2003 MontaVista, Software, Inc.
  16  *
  17  * This file is licensed under the terms of the GNU General Public License
  18  * version 2. This program is licensed "as is" without any warranty of any
  19  * kind, whether express or implied.
  20  */
  21
  22 #ifndef __ASM_MPC52xx_PSC_H__
  23 #define __ASM_MPC52xx_PSC_H__
  24
  25 #include <asm/types.h>
  26
  27 /* Max number of PSCs */
  28 #define MPC52xx_PSC_MAXNUM      6
  29
  30 /* Programmable Serial Controller (PSC) status register bits */
  31 #define MPC52xx_PSC_SR_UNEX_RX  0x0001
  32 #define MPC52xx_PSC_SR_DATA_VAL 0x0002
  33 #define MPC52xx_PSC_SR_DATA_OVR 0x0004
  34 #define MPC52xx_PSC_SR_CMDSEND  0x0008
  35 #define MPC52xx_PSC_SR_CDE      0x0080
  36 #define MPC52xx_PSC_SR_RXRDY    0x0100
  37 #define MPC52xx_PSC_SR_RXFULL   0x0200
  38 #define MPC52xx_PSC_SR_TXRDY    0x0400
  39 #define MPC52xx_PSC_SR_TXEMP    0x0800
  40 #define MPC52xx_PSC_SR_OE       0x1000
  41 #define MPC52xx_PSC_SR_PE       0x2000
  42 #define MPC52xx_PSC_SR_FE       0x4000
  43 #define MPC52xx_PSC_SR_RB       0x8000
  44
  45 /* PSC Command values */
  46 #define MPC52xx_PSC_RX_ENABLE           0x0001
  47 #define MPC52xx_PSC_RX_DISABLE          0x0002
  48 #define MPC52xx_PSC_TX_ENABLE           0x0004
  49 #define MPC52xx_PSC_TX_DISABLE          0x0008
  50 #define MPC52xx_PSC_SEL_MODE_REG_1      0x0010
  51 #define MPC52xx_PSC_RST_RX              0x0020
  52 #define MPC52xx_PSC_RST_TX              0x0030
  53 #define MPC52xx_PSC_RST_ERR_STAT        0x0040
  54 #define MPC52xx_PSC_RST_BRK_CHG_INT     0x0050
  55 #define MPC52xx_PSC_START_BRK           0x0060
  56 #define MPC52xx_PSC_STOP_BRK            0x0070
  57
  58 /* PSC TxRx FIFO status bits */
  59 #define MPC52xx_PSC_RXTX_FIFO_ERR       0x0040
  60 #define MPC52xx_PSC_RXTX_FIFO_UF        0x0020
  61 #define MPC52xx_PSC_RXTX_FIFO_OF        0x0010
  62 #define MPC52xx_PSC_RXTX_FIFO_FR        0x0008
  63 #define MPC52xx_PSC_RXTX_FIFO_FULL      0x0004
  64 #define MPC52xx_PSC_RXTX_FIFO_ALARM     0x0002
  65 #define MPC52xx_PSC_RXTX_FIFO_EMPTY     0x0001
  66
  67 /* PSC interrupt mask bits */
  68 #define MPC52xx_PSC_IMR_TXRDY           0x0100
  69 #define MPC52xx_PSC_IMR_RXRDY           0x0200
  70 #define MPC52xx_PSC_IMR_DB              0x0400
  71 #define MPC52xx_PSC_IMR_IPC             0x8000
  72
  73 /* PSC input port change bit */
  74 #define MPC52xx_PSC_CTS                 0x01
  75 #define MPC52xx_PSC_DCD                 0x02
  76 #define MPC52xx_PSC_D_CTS               0x10
  77 #define MPC52xx_PSC_D_DCD               0x20
  78
  79 /* PSC mode fields */
  80 #define MPC52xx_PSC_MODE_5_BITS                 0x00
  81 #define MPC52xx_PSC_MODE_6_BITS                 0x01
  82 #define MPC52xx_PSC_MODE_7_BITS                 0x02
  83 #define MPC52xx_PSC_MODE_8_BITS                 0x03
  84 #define MPC52xx_PSC_MODE_BITS_MASK              0x03
  85 #define MPC52xx_PSC_MODE_PAREVEN                0x00
  86 #define MPC52xx_PSC_MODE_PARODD                 0x04
  87 #define MPC52xx_PSC_MODE_PARFORCE               0x08
  88 #define MPC52xx_PSC_MODE_PARNONE                0x10
  89 #define MPC52xx_PSC_MODE_ERR                    0x20
  90 #define MPC52xx_PSC_MODE_FFULL                  0x40
  91 #define MPC52xx_PSC_MODE_RXRTS                  0x80
  92
  93 #define MPC52xx_PSC_MODE_ONE_STOP_5_BITS        0x00
  94 #define MPC52xx_PSC_MODE_ONE_STOP               0x07
  95 #define MPC52xx_PSC_MODE_TWO_STOP               0x0f
  96
  97 #define MPC52xx_PSC_RFNUM_MASK  0x01ff
  98
  99
 100 /* Structure of the hardware registers */
 101 struct mpc52xx_psc {
 102         u8              mode;           /* PSC + 0x00 */
 103         u8              reserved0[3];
 104         union {                         /* PSC + 0x04 */
 105                 u16     status;
 106                 u16     clock_select;
 107         } sr_csr;
 108 #define mpc52xx_psc_status      sr_csr.status
 109 #define mpc52xx_psc_clock_select sr_csr.clock_select
 110         u16             reserved1;
 111         u8              command;        /* PSC + 0x08 */
 112         u8              reserved2[3];
 113         union {                         /* PSC + 0x0c */
 114                 u8      buffer_8;
 115                 u16     buffer_16;
 116                 u32     buffer_32;
 117         } buffer;
 118 #define mpc52xx_psc_buffer_8    buffer.buffer_8
 119 #define mpc52xx_psc_buffer_16   buffer.buffer_16
 120 #define mpc52xx_psc_buffer_32   buffer.buffer_32
 121         union {                         /* PSC + 0x10 */
 122                 u8      ipcr;
 123                 u8      acr;
 124         } ipcr_acr;
 125 #define mpc52xx_psc_ipcr        ipcr_acr.ipcr
 126 #define mpc52xx_psc_acr         ipcr_acr.acr
 127         u8              reserved3[3];
 128         union {                         /* PSC + 0x14 */
 129                 u16     isr;
 130                 u16     imr;
 131         } isr_imr;
 132 #define mpc52xx_psc_isr         isr_imr.isr
 133 #define mpc52xx_psc_imr         isr_imr.imr
 134         u16             reserved4;
 135         u8              ctur;           /* PSC + 0x18 */
 136         u8              reserved5[3];
 137         u8              ctlr;           /* PSC + 0x1c */
 138         u8              reserved6[3];
 139         u32             ccr;            /* PSC + 0x20 */
 140         u32             ac97_slots;     /* PSC + 0x24 */
 141         u32             ac97_cmd;       /* PSC + 0x28 */
 142         u32             ac97_data;      /* PSC + 0x2c */
 143         u8              ivr;            /* PSC + 0x30 */
 144         u8              reserved8[3];
 145         u8              ip;             /* PSC + 0x34 */
 146         u8              reserved9[3];
 147         u8              op1;            /* PSC + 0x38 */
 148         u8              reserved10[3];
 149         u8              op0;            /* PSC + 0x3c */
 150         u8              reserved11[3];
 151         u32             sicr;           /* PSC + 0x40 */
 152         u8              ircr1;          /* PSC + 0x44 */
 153         u8              reserved13[3];
 154         u8              ircr2;          /* PSC + 0x44 */
 155         u8              reserved14[3];
 156         u8              irsdr;          /* PSC + 0x4c */
 157         u8              reserved15[3];
 158         u8              irmdr;          /* PSC + 0x50 */
 159         u8              reserved16[3];
 160         u8              irfdr;          /* PSC + 0x54 */
 161         u8              reserved17[3];
 162 };
 163
 164 struct mpc52xx_psc_fifo {
 165         u16             rfnum;          /* PSC + 0x58 */
 166         u16             reserved18;
 167         u16             tfnum;          /* PSC + 0x5c */
 168         u16             reserved19;
 169         u32             rfdata;         /* PSC + 0x60 */
 170         u16             rfstat;         /* PSC + 0x64 */
 171         u16             reserved20;
 172         u8              rfcntl;         /* PSC + 0x68 */
 173         u8              reserved21[5];
 174         u16             rfalarm;        /* PSC + 0x6e */
 175         u16             reserved22;
 176         u16             rfrptr;         /* PSC + 0x72 */
 177         u16             reserved23;
 178         u16             rfwptr;         /* PSC + 0x76 */
 179         u16             reserved24;
 180         u16             rflrfptr;       /* PSC + 0x7a */
 181         u16             reserved25;
 182         u16             rflwfptr;       /* PSC + 0x7e */
 183         u32             tfdata;         /* PSC + 0x80 */
 184         u16             tfstat;         /* PSC + 0x84 */
 185         u16             reserved26;
 186         u8              tfcntl;         /* PSC + 0x88 */
 187         u8              reserved27[5];
 188         u16             tfalarm;        /* PSC + 0x8e */
 189         u16             reserved28;
 190         u16             tfrptr;         /* PSC + 0x92 */
 191         u16             reserved29;
 192         u16             tfwptr;         /* PSC + 0x96 */
 193         u16             reserved30;
 194         u16             tflrfptr;       /* PSC + 0x9a */
 195         u16             reserved31;
 196         u16             tflwfptr;       /* PSC + 0x9e */
 197 };
 198
 199
 200 #endif  /* __ASM_MPC52xx_PSC_H__ */