include/ioports.h

   1 /*
   2  * definitions for MPC8xxx I/O Ports
   3  *
   4  * Murray.Jensen@cmst.csiro.au, 20-Oct-00
   5  */
   6
   7 /*
   8  * this structure mirrors the layout of the five port registers in
   9  * the internal memory map
  10  */
  11 typedef struct {
  12     unsigned int pdir;          /* Port Data Direction Register (35-3) */
  13     unsigned int ppar;          /* Port Pin Assignment Register (35-4) */
  14     unsigned int psor;          /* Port Special Options Register (35-5) */
  15     unsigned int podr;          /* Port Open Drain Register (35-2) */
  16     unsigned int pdat;          /* Port Data Register (35-3) */
  17 } ioport_t;
  18
  19 /*
  20  * this macro calculates the address within the internal
  21  * memory map (im) of the set of registers for a port (idx)
  22  *
  23  * the internal memory map aligns the above structure on
  24  * a 0x20 byte boundary
  25  */
  26 #ifdef CONFIG_MPC85xx
  27 #define ioport_addr(im, idx) (ioport_t *)((uint)&(im->im_cpm_iop) + ((idx)*0x20))
  28 #else
  29 #define ioport_addr(im, idx) (ioport_t *)((uint)&(im)->im_ioport + ((idx)*0x20))
  30 #endif
  31
  32 /*
  33  * this structure provides configuration
  34  * information for one port pin
  35  */
  36 typedef struct {
  37     unsigned char conf:1;       /* if 1, configure this port */
  38     unsigned char ppar:1;       /* Port Pin Assignment Register (35-4) */
  39     unsigned char psor:1;       /* Port Special Options Register (35-2) */
  40     unsigned char pdir:1;       /* Port Data Direction Register (35-3) */
  41     unsigned char podr:1;       /* Port Open Drain Register (35-2) */
  42     unsigned char pdat:1;       /* Port Data Register (35-2) */
  43 } iop_conf_t;
  44
  45 /*
  46  * a table that contains configuration information for all 32 pins
  47  *
  48  * NOTE: in the second dimension of this table, index 0 refers to pin 31
  49  * and index 31 refers to pin 0. this made the code in the table look more
  50  * like the table in the 8260UM (and in the hymod manuals).
  51  */
  52 extern const iop_conf_t iop_conf_tab[4][32];
  53
  54 typedef struct {
  55         unsigned char   port;
  56         unsigned char   pin;
  57         int             dir;
  58         int             open_drain;
  59         int             assign;
  60 } qe_iop_conf_t;
  61
  62 #define QE_IOP_TAB_END  (-1)