drivers/pcmcia/marubun_pcmcia.c

   1 /*
   2  * Marubun MR-SHPC-01 PCMCIA controller device driver
   3  *
   4  * (c) 2007 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of
   9  * the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  19  * MA 02111-1307 USA
  20  *
  21  */
  22
  23 #include <common.h>
  24 #include <config.h>
  25 #include <pcmcia.h>
  26 #include <asm/io.h>
  27
  28 #undef CONFIG_PCMCIA
  29
  30 #if defined(CONFIG_CMD_PCMCIA)
  31 #define CONFIG_PCMCIA
  32 #endif
  33
  34 #if defined(CONFIG_CMD_IDE)
  35 #define CONFIG_PCMCIA
  36 #endif
  37
  38 #if defined(CONFIG_PCMCIA)
  39
  40 /* MR-SHPC-01 register */
  41 #define MRSHPC_MODE     (CONFIG_SYS_MARUBUN_MRSHPC + 4)
  42 #define MRSHPC_OPTION   (CONFIG_SYS_MARUBUN_MRSHPC + 6)
  43 #define MRSHPC_CSR      (CONFIG_SYS_MARUBUN_MRSHPC + 8)
  44 #define MRSHPC_ISR      (CONFIG_SYS_MARUBUN_MRSHPC + 10)
  45 #define MRSHPC_ICR      (CONFIG_SYS_MARUBUN_MRSHPC + 12)
  46 #define MRSHPC_CPWCR    (CONFIG_SYS_MARUBUN_MRSHPC + 14)
  47 #define MRSHPC_MW0CR1   (CONFIG_SYS_MARUBUN_MRSHPC + 16)
  48 #define MRSHPC_MW1CR1   (CONFIG_SYS_MARUBUN_MRSHPC + 18)
  49 #define MRSHPC_IOWCR1   (CONFIG_SYS_MARUBUN_MRSHPC + 20)
  50 #define MRSHPC_MW0CR2   (CONFIG_SYS_MARUBUN_MRSHPC + 22)
  51 #define MRSHPC_MW1CR2   (CONFIG_SYS_MARUBUN_MRSHPC + 24)
  52 #define MRSHPC_IOWCR2   (CONFIG_SYS_MARUBUN_MRSHPC + 26)
  53 #define MRSHPC_CDCR     (CONFIG_SYS_MARUBUN_MRSHPC + 28)
  54 #define MRSHPC_PCIC_INFO (CONFIG_SYS_MARUBUN_MRSHPC + 30)
  55
  56 int pcmcia_on (void)
  57 {
  58         printf("Enable PCMCIA " PCMCIA_SLOT_MSG "\n");
  59
  60         /* Init */
  61         outw( 0x0000 , MRSHPC_MODE );
  62
  63         if ((inw(MRSHPC_CSR) & 0x000c) == 0){   /* if card detect is true */
  64                 if ((inw(MRSHPC_CSR) & 0x0080) == 0){
  65                         outw(0x0674 ,MRSHPC_CPWCR);  /* Card Vcc is 3.3v? */
  66                 }else{
  67                         outw(0x0678 ,MRSHPC_CPWCR);  /* Card Vcc is 5V */
  68                 }
  69                 udelay( 100000 );   /* wait for power on */
  70         }else{
  71                 return 1;
  72         }
  73         /*
  74          *      PC-Card window open
  75          *      flag == COMMON/ATTRIBUTE/IO
  76          */
  77         /* common window open */
  78         outw(0x8a84,MRSHPC_MW0CR1); /* window 0xb8400000 */
  79         if ((inw(MRSHPC_CSR) & 0x4000) != 0)
  80                 outw(0x0b00,MRSHPC_MW0CR2); /* common mode & bus width 16bit SWAP = 1 */
  81         else
  82                 outw(0x0300,MRSHPC_MW0CR2); /* common mode & bus width 16bit SWAP = 0 */
  83
  84         /* attribute window open */
  85         outw(0x8a85,MRSHPC_MW1CR1); /* window 0xb8500000 */
  86         if ((inw(MRSHPC_CSR) & 0x4000) != 0)
  87                 outw(0x0a00,MRSHPC_MW1CR2); /* attribute mode & bus width 16bit SWAP = 1 */
  88         else
  89                 outw(0x0200,MRSHPC_MW1CR2); /* attribute mode & bus width 16bit SWAP = 0 */
  90
  91         /* I/O window open */
  92         outw(0x8a86,MRSHPC_IOWCR1); /* I/O window 0xb8600000 */
  93         outw(0x0008,MRSHPC_CDCR);   /* I/O card mode */
  94         if ((inw(MRSHPC_CSR) & 0x4000) != 0)
  95                 outw(0x0a00,MRSHPC_IOWCR2); /* bus width 16bit SWAP = 1 */
  96         else
  97                 outw(0x0200,MRSHPC_IOWCR2); /* bus width 16bit SWAP = 0 */
  98
  99         outw(0x0000,MRSHPC_ISR);
 100         outw(0x2000,MRSHPC_ICR);
 101         outb(0x00,(CONFIG_SYS_MARUBUN_MW2 + 0x206));
 102         outb(0x42,(CONFIG_SYS_MARUBUN_MW2 + 0x200));
 103
 104         return 0;
 105 }
 106
 107 int pcmcia_off (void)
 108 {
 109         printf ("Disable PCMCIA " PCMCIA_SLOT_MSG "\n");
 110
 111         return 0;
 112 }
 113
 114 #endif /* CONFIG_PCMCIA */