include/ioports.h

   1 /*
   2  * definitions for MPC8260 I/O Ports
   3  *
   4  * (in addition to those provided in <asm/immap_8260.h>)
   5  *
   6  * Murray.Jensen@cmst.csiro.au, 20-Oct-00
   7  */
   8
   9 /*
  10  * this structure mirrors the layout of the five port registers in
  11  * the internal memory map - see iop8260_t in <asm/immap_8260.h>
  12  */
  13 typedef struct {
  14     unsigned int pdir;          /* Port Data Direction Register (35-3) */
  15     unsigned int ppar;          /* Port Pin Assignment Register (35-4) */
  16     unsigned int psor;          /* Port Special Options Register (35-5) */
  17     unsigned int podr;          /* Port Open Drain Register (35-2) */
  18     unsigned int pdat;          /* Port Data Register (35-3) */
  19 } ioport_t;
  20
  21 /*
  22  * this macro calculates the address within the internal
  23  * memory map (im) of the set of registers for a port (idx)
  24  *
  25  * the internal memory map aligns the above structure on
  26  * a 0x20 byte boundary
  27  */
  28 #ifdef CONFIG_MPC85xx
  29 #define ioport_addr(im, idx) (ioport_t *)((uint)&(im->im_cpm_iop) + ((idx)*0x20))
  30 #else
  31 #define ioport_addr(im, idx) (ioport_t *)((uint)&(im)->im_ioport + ((idx)*0x20))
  32 #endif
  33
  34 /*
  35  * this structure provides configuration
  36  * information for one port pin
  37  */
  38 typedef struct {
  39     unsigned char conf:1;       /* if 1, configure this port */
  40     unsigned char ppar:1;       /* Port Pin Assignment Register (35-4) */
  41     unsigned char psor:1;       /* Port Special Options Register (35-2) */
  42     unsigned char pdir:1;       /* Port Data Direction Register (35-3) */
  43     unsigned char podr:1;       /* Port Open Drain Register (35-2) */
  44     unsigned char pdat:1;       /* Port Data Register (35-2) */
  45 } iop_conf_t;
  46
  47 /*
  48  * a table that contains configuration information for all 32 pins
  49  * of all four MPC8260 I/O ports.
  50  *
  51  * NOTE: in the second dimension of this table, index 0 refers to pin 31
  52  * and index 31 refers to pin 0. this made the code in the table look more
  53  * like the table in the 8260UM (and in the hymod manuals).
  54  */
  55 extern const iop_conf_t iop_conf_tab[4][32];
  56
  57 typedef struct {
  58         unsigned char   port;
  59         unsigned char   pin;
  60         int             dir;
  61         int             open_drain;
  62         int             assign;
  63 } qe_iop_conf_t;
  64
  65 #define QE_IOP_TAB_END  (-1)