arch/sh/include/mach-se/mach/mrshpc.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __MACH_SE_MRSHPC_H
   3 #define __MACH_SE_MRSHPC_H
   4
   5 #include <linux/io.h>
   6
   7 static inline void __init mrshpc_setup_windows(void)
   8 {
   9         if ((__raw_readw(MRSHPC_CSR) & 0x000c) != 0)
  10                 return; /* Not detected */
  11
  12         if ((__raw_readw(MRSHPC_CSR) & 0x0080) == 0) {
  13                 __raw_writew(0x0674, MRSHPC_CPWCR); /* Card Vcc is 3.3v? */
  14         } else {
  15                 __raw_writew(0x0678, MRSHPC_CPWCR); /* Card Vcc is 5V */
  16         }
  17
  18         /*
  19          *  PC-Card window open
  20          *  flag == COMMON/ATTRIBUTE/IO
  21          */
  22         /* common window open */
  23         __raw_writew(0x8a84, MRSHPC_MW0CR1);
  24         if((__raw_readw(MRSHPC_CSR) & 0x4000) != 0)
  25                 /* common mode & bus width 16bit SWAP = 1*/
  26                 __raw_writew(0x0b00, MRSHPC_MW0CR2);
  27         else
  28                 /* common mode & bus width 16bit SWAP = 0*/
  29                 __raw_writew(0x0300, MRSHPC_MW0CR2);
  30
  31         /* attribute window open */
  32         __raw_writew(0x8a85, MRSHPC_MW1CR1);
  33         if ((__raw_readw(MRSHPC_CSR) & 0x4000) != 0)
  34                 /* attribute mode & bus width 16bit SWAP = 1*/
  35                 __raw_writew(0x0a00, MRSHPC_MW1CR2);
  36         else
  37                 /* attribute mode & bus width 16bit SWAP = 0*/
  38                 __raw_writew(0x0200, MRSHPC_MW1CR2);
  39
  40         /* I/O window open */
  41         __raw_writew(0x8a86, MRSHPC_IOWCR1);
  42         __raw_writew(0x0008, MRSHPC_CDCR);       /* I/O card mode */
  43         if ((__raw_readw(MRSHPC_CSR) & 0x4000) != 0)
  44                 __raw_writew(0x0a00, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 1*/
  45         else
  46                 __raw_writew(0x0200, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 0*/
  47
  48         __raw_writew(0x2000, MRSHPC_ICR);
  49         __raw_writeb(0x00, PA_MRSHPC_MW2 + 0x206);
  50         __raw_writeb(0x42, PA_MRSHPC_MW2 + 0x200);
  51 }
  52
  53 #endif /* __MACH_SE_MRSHPC_H */