board/r360mpi/pcmcia.c

   1 #include <common.h>
   2 #include <mpc8xx.h>
   3 #include <pcmcia.h>
   4
   5 #undef  CONFIG_PCMCIA
   6
   7 #if defined(CONFIG_CMD_PCMCIA)
   8 #define CONFIG_PCMCIA
   9 #endif
  10
  11 #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
  12 #define CONFIG_PCMCIA
  13 #endif
  14
  15 #ifdef  CONFIG_PCMCIA
  16
  17 #define PCMCIA_BOARD_MSG "R360MPI"
  18
  19 int pcmcia_hardware_enable(int slot)
  20 {
  21         volatile immap_t        *immap;
  22         volatile cpm8xx_t       *cp;
  23         volatile pcmconf8xx_t   *pcmp;
  24         volatile sysconf8xx_t   *sysp;
  25         uint reg, mask;
  26
  27         debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
  28
  29         udelay(10000);
  30
  31         immap = (immap_t *)CONFIG_SYS_IMMR;
  32         sysp  = (sysconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_siu_conf));
  33         pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));
  34         cp    = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm));
  35
  36         /*
  37         * Configure SIUMCR to enable PCMCIA port B
  38         * (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
  39         */
  40         sysp->sc_siumcr &= ~SIUMCR_DBGC11;      /* set DBGC to 00 */
  41
  42         /* clear interrupt state, and disable interrupts */
  43         pcmp->pcmc_pscr =  PCMCIA_MASK(_slot_);
  44         pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_);
  45
  46         /*
  47         * Disable interrupts, DMA, and PCMCIA buffers
  48         * (isolate the interface) and assert RESET signal
  49         */
  50         debug ("Disable PCMCIA buffers and assert RESET\n");
  51         reg  = 0;
  52         reg |= __MY_PCMCIA_GCRX_CXRESET;        /* active high */
  53         reg |= __MY_PCMCIA_GCRX_CXOE;           /* active low  */
  54         PCMCIA_PGCRX(_slot_) = reg;
  55         udelay(500);
  56
  57         /*
  58         * Configure Ports A, B & C pins for
  59         * 5 Volts Enable and 3 Volts enable
  60         */
  61         immap->im_ioport.iop_pcpar &= ~(0x0400);
  62         immap->im_ioport.iop_pcso  &= ~(0x0400);/*
  63         immap->im_ioport.iop_pcdir |= 0x0400;*/
  64
  65         immap->im_ioport.iop_papar &= ~(0x0200);/*
  66         immap->im_ioport.iop_padir |= 0x0200;*/
  67 #if 0
  68         immap->im_ioport.iop_pbpar &= ~(0xC000);
  69         immap->im_ioport.iop_pbdir &= ~(0xC000);
  70 #endif
  71         /* remove all power */
  72
  73         immap->im_ioport.iop_pcdat |= 0x0400;
  74         immap->im_ioport.iop_padat |= 0x0200;
  75
  76         /*
  77         * Make sure there is a card in the slot, then configure the interface.
  78         */
  79         udelay(10000);
  80         debug ("[%d] %s: PIPR(%p)=0x%x\n",
  81                __LINE__,__FUNCTION__,
  82                &(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
  83         if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) {
  84                 printf ("   No Card found\n");
  85                 return (1);
  86         }
  87
  88         /*
  89         * Power On.
  90         */
  91         mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
  92         reg  = pcmp->pcmc_pipr;
  93         debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
  94                reg,
  95                (reg&PCMCIA_VS1(slot))?"n":"ff",
  96                (reg&PCMCIA_VS2(slot))?"n":"ff");
  97         if ((reg & mask) == mask) {
  98                 immap->im_ioport.iop_pcdat &= ~(0x4000);
  99                 puts (" 5.0V card found: ");
 100         } else {
 101                 immap->im_ioport.iop_padat &= ~(0x0002);
 102                 puts (" 3.3V card found: ");
 103         }
 104         immap->im_ioport.iop_pcdir |= 0x0400;
 105         immap->im_ioport.iop_padir |= 0x0200;
 106 #if 0
 107         /*  VCC switch error flag, PCMCIA slot INPACK_ pin */
 108         cp->cp_pbdir &= ~(0x0020 | 0x0010);
 109         cp->cp_pbpar &= ~(0x0020 | 0x0010);
 110         udelay(500000);
 111 #endif
 112         debug ("Enable PCMCIA buffers and stop RESET\n");
 113         reg  =  PCMCIA_PGCRX(_slot_);
 114         reg &= ~__MY_PCMCIA_GCRX_CXRESET;       /* active high */
 115         reg &= ~__MY_PCMCIA_GCRX_CXOE;          /* active low  */
 116         PCMCIA_PGCRX(_slot_) = reg;
 117
 118         udelay(250000); /* some cards need >150 ms to come up :-( */
 119
 120         debug ("# hardware_enable done\n");
 121
 122         return (0);
 123 }
 124
 125
 126 #if defined(CONFIG_CMD_PCMCIA)
 127 int pcmcia_hardware_disable(int slot)
 128 {
 129         volatile immap_t        *immap;
 130         volatile pcmconf8xx_t   *pcmp;
 131         u_long reg;
 132
 133         debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
 134
 135         immap = (immap_t *)CONFIG_SYS_IMMR;
 136         pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));
 137
 138         /* remove all power */
 139         immap->im_ioport.iop_pcdat |= 0x0400;
 140         immap->im_ioport.iop_padat |= 0x0200;
 141
 142         /* Configure PCMCIA General Control Register */
 143         debug ("Disable PCMCIA buffers and assert RESET\n");
 144         reg  = 0;
 145         reg |= __MY_PCMCIA_GCRX_CXRESET;        /* active high */
 146         reg |= __MY_PCMCIA_GCRX_CXOE;           /* active low  */
 147         PCMCIA_PGCRX(_slot_) = reg;
 148
 149         udelay(10000);
 150
 151         return (0);
 152 }
 153 #endif
 154
 155
 156 int pcmcia_voltage_set(int slot, int vcc, int vpp)
 157 {
 158         volatile immap_t        *immap;
 159         volatile pcmconf8xx_t   *pcmp;
 160         u_long reg;
 161
 162         debug ("voltage_set: "
 163                         PCMCIA_BOARD_MSG
 164                         " Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
 165         'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
 166
 167         immap = (immap_t *)CONFIG_SYS_IMMR;
 168         pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));
 169         /*
 170         * Disable PCMCIA buffers (isolate the interface)
 171         * and assert RESET signal
 172         */
 173         debug ("Disable PCMCIA buffers and assert RESET\n");
 174         reg  = PCMCIA_PGCRX(_slot_);
 175         reg |= __MY_PCMCIA_GCRX_CXRESET;        /* active high */
 176         reg |= __MY_PCMCIA_GCRX_CXOE;           /* active low  */
 177         PCMCIA_PGCRX(_slot_) = reg;
 178         udelay(500);
 179
 180         /*
 181         * Configure Ports A & C pins for
 182         * 5 Volts Enable and 3 Volts enable,
 183         * Turn off all power
 184         */
 185         debug ("PCMCIA power OFF\n");
 186         immap->im_ioport.iop_pcpar &= ~(0x0400);
 187         immap->im_ioport.iop_pcso  &= ~(0x0400);/*
 188         immap->im_ioport.iop_pcdir |= 0x0400;*/
 189
 190         immap->im_ioport.iop_papar &= ~(0x0200);/*
 191         immap->im_ioport.iop_padir |= 0x0200;*/
 192
 193         immap->im_ioport.iop_pcdat |= 0x0400;
 194         immap->im_ioport.iop_padat |= 0x0200;
 195
 196         reg = 0;
 197         switch(vcc) {
 198                 case  0:                break;
 199                 case 33: reg |= 0x0200; break;
 200                 case 50: reg |= 0x0400; break;
 201                 default:                goto done;
 202         }
 203
 204         /* Checking supported voltages */
 205
 206         debug ("PIPR: 0x%x --> %s\n",
 207                pcmp->pcmc_pipr,
 208                (pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
 209
 210         if (reg & 0x0200)
 211                 immap->im_ioport.iop_pcdat &= !reg;
 212         if (reg & 0x0400)
 213                 immap->im_ioport.iop_padat &= !reg;
 214         immap->im_ioport.iop_pcdir |= 0x0200;
 215         immap->im_ioport.iop_padir |= 0x0400;
 216         if (reg) {
 217                 debug ("PCMCIA powered at %sV\n",
 218                        (reg&0x0400) ? "5.0" : "3.3");
 219         } else {
 220                 debug ("PCMCIA powered down\n");
 221         }
 222
 223 done:
 224                         debug ("Enable PCMCIA buffers and stop RESET\n");
 225         reg  =  PCMCIA_PGCRX(_slot_);
 226         reg &= ~__MY_PCMCIA_GCRX_CXRESET;       /* active high */
 227         reg &= ~__MY_PCMCIA_GCRX_CXOE;          /* active low  */
 228         PCMCIA_PGCRX(_slot_) = reg;
 229         udelay(500);
 230
 231         debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
 232                slot+'A');
 233         return (0);
 234 }
 235
 236 #endif  /* CCONFIG_PCMCIA */