drivers/pcmcia/tqm8xx_pcmcia.c

   1 /* -------------------------------------------------------------------- */
   2 /* TQM8xxL Boards by TQ Components                                      */
   3 /* SC8xx   Boards by SinoVee Microsystems                               */
   4 /* -------------------------------------------------------------------- */
   5 #include <common.h>
   6 #ifdef CONFIG_8xx
   7 #include <mpc8xx.h>
   8 #endif
   9 #include <pcmcia.h>
  10
  11 #undef  CONFIG_PCMCIA
  12
  13 #if defined(CONFIG_CMD_PCMCIA)
  14 #define CONFIG_PCMCIA
  15 #endif
  16
  17 #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
  18 #define CONFIG_PCMCIA
  19 #endif
  20
  21 #if     defined(CONFIG_PCMCIA)  \
  22         && (defined(CONFIG_TQM8xxL) || defined(CONFIG_SVM_SC8xx))
  23
  24 #if     defined(CONFIG_VIRTLAB2)
  25 #define PCMCIA_BOARD_MSG        "Virtlab2"
  26 #elif   defined(CONFIG_TQM8xxL)
  27 #define PCMCIA_BOARD_MSG        "TQM8xxL"
  28 #elif   defined(CONFIG_SVM_SC8xx)
  29 #define PCMCIA_BOARD_MSG        "SC8xx"
  30 #endif
  31
  32 #if     defined(CONFIG_NSCU)
  33
  34 #define power_config(slot)      do {} while (0)
  35 #define power_off(slot)         do {} while (0)
  36 #define power_on_5_0(slot)      do {} while (0)
  37 #define power_on_3_3(slot)      do {} while (0)
  38
  39 #elif   defined(CONFIG_HMI10)
  40
  41 static inline void power_config(int slot)
  42 {
  43         volatile immap_t *immap = (immap_t *)CFG_IMMR;
  44         /*
  45          * Configure Port B  pins for
  46          * 5 Volts Enable and 3 Volts enable
  47         */
  48         immap->im_cpm.cp_pbpar &= ~(0x00000300);
  49 }
  50
  51 static inline void power_off(int slot)
  52 {
  53         volatile immap_t *immap = (immap_t *)CFG_IMMR;
  54         /* remove all power */
  55         immap->im_cpm.cp_pbdat |= 0x00000300;
  56 }
  57
  58 static inline void power_on_5_0(int slot)
  59 {
  60         volatile immap_t *immap = (immap_t *)CFG_IMMR;
  61         immap->im_cpm.cp_pbdat &= ~(0x0000100);
  62         immap->im_cpm.cp_pbdir |= 0x00000300;
  63 }
  64
  65 static inline void power_on_3_3(int slot)
  66 {
  67         volatile immap_t *immap = (immap_t *)CFG_IMMR;
  68         immap->im_cpm.cp_pbdat &= ~(0x0000200);
  69         immap->im_cpm.cp_pbdir |= 0x00000300;
  70 }
  71
  72 #elif   defined(CONFIG_VIRTLAB2)
  73
  74 #define power_config(slot)      do {} while (0)
  75 static inline void power_off(int slot)
  76 {
  77         volatile unsigned char  *powerctl =
  78                         (volatile unsigned char *)PCMCIA_CTRL;
  79         *powerctl = 0;
  80 }
  81
  82 static inline void power_on_5_0(int slot)
  83 {
  84         volatile unsigned char  *powerctl =
  85                         (volatile unsigned char *)PCMCIA_CTRL;
  86                         *powerctl = 2;  /* Enable 5V Vccout */
  87 }
  88
  89 static inline void power_on_3_3(int slot)
  90 {
  91         volatile unsigned char  *powerctl =
  92                         (volatile unsigned char *)PCMCIA_CTRL;
  93                         *powerctl = 1;  /* Enable 3.3V Vccout */
  94 }
  95
  96 #else
  97
  98 static inline void power_config(int slot)
  99 {
 100         volatile immap_t *immap = (immap_t *)CFG_IMMR;
 101         /*
 102         * Configure Port C pins for
 103         * 5 Volts Enable and 3 Volts enable
 104         */
 105         immap->im_ioport.iop_pcpar &= ~(0x0002 | 0x0004);
 106         immap->im_ioport.iop_pcso  &= ~(0x0002 | 0x0004);
 107 }
 108
 109 static inline void power_off(int slot)
 110 {
 111         volatile immap_t *immap = (immap_t *)CFG_IMMR;
 112         immap->im_ioport.iop_pcdat &= ~(0x0002 | 0x0004);
 113 }
 114
 115 static inline void power_on_5_0(int slot)
 116 {
 117         volatile immap_t *immap = (immap_t *)CFG_IMMR;
 118         immap->im_ioport.iop_pcdat |= 0x0004;
 119         immap->im_ioport.iop_pcdir |= (0x0002 | 0x0004);
 120 }
 121
 122 static inline void power_on_3_3(int slot)
 123 {
 124         volatile immap_t *immap = (immap_t *)CFG_IMMR;
 125         immap->im_ioport.iop_pcdat |= 0x0002;
 126         immap->im_ioport.iop_pcdir |= (0x0002 | 0x0004);
 127 }
 128
 129 #endif
 130
 131 #ifdef  CONFIG_HMI10
 132 static inline int check_card_is_absent(int slot)
 133 {
 134         volatile pcmconf8xx_t *pcmp =
 135                 (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
 136         return pcmp->pcmc_pipr & (0x10000000 >> (slot << 4));
 137 }
 138 #else
 139 static inline int check_card_is_absent(int slot)
 140 {
 141         volatile pcmconf8xx_t *pcmp =
 142                 (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
 143         return pcmp->pcmc_pipr & (0x18000000 >> (slot << 4));
 144 }
 145 #endif
 146
 147 #ifdef  NSCU_OE_INV
 148 #define NSCU_GCRX_CXOE  0
 149 #else
 150 #define NSCU_GCRX_CXOE  __MY_PCMCIA_GCRX_CXOE
 151 #endif
 152
 153 int pcmcia_hardware_enable(int slot)
 154 {
 155         volatile pcmconf8xx_t *pcmp =
 156                 (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
 157         volatile sysconf8xx_t *sysp =
 158                 (sysconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_siu_conf));
 159         uint reg, mask;
 160
 161         debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
 162
 163         udelay(10000);
 164
 165         /*
 166         * Configure SIUMCR to enable PCMCIA port B
 167         * (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
 168         */
 169         sysp->sc_siumcr &= ~SIUMCR_DBGC11;      /* set DBGC to 00 */
 170
 171         /* clear interrupt state, and disable interrupts */
 172         pcmp->pcmc_pscr =  PCMCIA_MASK(slot);
 173         pcmp->pcmc_per &= ~PCMCIA_MASK(slot);
 174
 175         /*
 176         * Disable interrupts, DMA, and PCMCIA buffers
 177         * (isolate the interface) and assert RESET signal
 178         */
 179         debug ("Disable PCMCIA buffers and assert RESET\n");
 180         reg  = 0;
 181         reg |= __MY_PCMCIA_GCRX_CXRESET;        /* active high */
 182         reg |= NSCU_GCRX_CXOE;
 183
 184         PCMCIA_PGCRX(slot) = reg;
 185         udelay(500);
 186
 187         power_config(slot);
 188         power_off(slot);
 189
 190         /*
 191          * Make sure there is a card in the slot, then configure the interface.
 192         */
 193         udelay(10000);
 194         debug ("[%d] %s: PIPR(%p)=0x%x\n", __LINE__,__FUNCTION__,
 195                &(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
 196
 197         if (check_card_is_absent(slot)) {
 198                 printf ("   No Card found\n");
 199                 return (1);
 200         }
 201
 202         /*
 203         * Power On.
 204         */
 205         mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
 206         reg  = pcmp->pcmc_pipr;
 207         debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
 208                reg,
 209                (reg&PCMCIA_VS1(slot))?"n":"ff",
 210                (reg&PCMCIA_VS2(slot))?"n":"ff");
 211
 212         if ((reg & mask) == mask) {
 213                 power_on_5_0(slot);
 214                 puts (" 5.0V card found: ");
 215         } else {
 216                 power_on_3_3(slot);
 217                 puts (" 3.3V card found: ");
 218         }
 219
 220 #if 0
 221         /*  VCC switch error flag, PCMCIA slot INPACK_ pin */
 222         cp->cp_pbdir &= ~(0x0020 | 0x0010);
 223         cp->cp_pbpar &= ~(0x0020 | 0x0010);
 224         udelay(500000);
 225 #endif
 226
 227         udelay(1000);
 228         debug ("Enable PCMCIA buffers and stop RESET\n");
 229         reg  =  PCMCIA_PGCRX(slot);
 230         reg &= ~__MY_PCMCIA_GCRX_CXRESET;       /* active high */
 231         reg |= __MY_PCMCIA_GCRX_CXOE;           /* active low  */
 232         reg &= ~NSCU_GCRX_CXOE;
 233
 234         PCMCIA_PGCRX(slot) = reg;
 235
 236         udelay(250000); /* some cards need >150 ms to come up :-( */
 237
 238         debug ("# hardware_enable done\n");
 239
 240         return (0);
 241 }
 242
 243
 244 #if defined(CONFIG_CMD_PCMCIA)
 245 int pcmcia_hardware_disable(int slot)
 246 {
 247         u_long reg;
 248
 249         debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
 250
 251
 252         /* remove all power */
 253         power_off(slot);
 254
 255         debug ("Disable PCMCIA buffers and assert RESET\n");
 256         reg  = 0;
 257         reg |= __MY_PCMCIA_GCRX_CXRESET;        /* active high */
 258         reg |= NSCU_GCRX_CXOE;                  /* active low  */
 259
 260         PCMCIA_PGCRX(slot) = reg;
 261
 262         udelay(10000);
 263
 264         return (0);
 265 }
 266 #endif
 267
 268 int pcmcia_voltage_set(int slot, int vcc, int vpp)
 269 {
 270 #ifndef CONFIG_NSCU
 271         u_long reg;
 272 # ifdef DEBUG
 273         volatile pcmconf8xx_t *pcmp =
 274                 (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
 275 # endif
 276
 277         debug ("voltage_set: " PCMCIA_BOARD_MSG
 278                 " Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
 279                 'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
 280
 281         /*
 282         * Disable PCMCIA buffers (isolate the interface)
 283         * and assert RESET signal
 284         */
 285         debug ("Disable PCMCIA buffers and assert RESET\n");
 286         reg  = PCMCIA_PGCRX(slot);
 287         reg |= __MY_PCMCIA_GCRX_CXRESET;        /* active high */
 288         reg &= ~__MY_PCMCIA_GCRX_CXOE;          /* active low  */
 289         reg |= NSCU_GCRX_CXOE;                  /* active low  */
 290
 291         PCMCIA_PGCRX(slot) = reg;
 292         udelay(500);
 293
 294         debug ("PCMCIA power OFF\n");
 295         power_config(slot);
 296         power_off(slot);
 297
 298         switch(vcc) {
 299                 case  0:                        break;
 300                 case 33: power_on_3_3(slot);    break;
 301                 case 50: power_on_5_0(slot);    break;
 302                 default:                        goto done;
 303         }
 304
 305         /* Checking supported voltages */
 306
 307         debug("PIPR: 0x%x --> %s\n", pcmp->pcmc_pipr,
 308                (pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
 309
 310         if (vcc)
 311                 debug("PCMCIA powered at %sV\n", (vcc == 50) ? "5.0" : "3.3");
 312         else
 313                 debug("PCMCIA powered down\n");
 314
 315 done:
 316         debug("Enable PCMCIA buffers and stop RESET\n");
 317         reg  =  PCMCIA_PGCRX(slot);
 318         reg &= ~__MY_PCMCIA_GCRX_CXRESET;       /* active high */
 319         reg |= __MY_PCMCIA_GCRX_CXOE;           /* active low  */
 320         reg &= ~NSCU_GCRX_CXOE;                 /* active low  */
 321
 322         PCMCIA_PGCRX(slot) = reg;
 323         udelay(500);
 324
 325         debug("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n", slot+'A');
 326 #endif  /* CONFIG_NSCU */
 327         return (0);
 328 }
 329
 330 #endif  /* CONFIG_PCMCIA && (CONFIG_TQM8xxL || CONFIG_SVM_SC8xx) */