include/asm-sh/mc146818rtc.h

   1 /*
   2  * Machine dependent access functions for RTC registers.
   3  */
   4 #ifndef _ASM_MC146818RTC_H
   5 #define _ASM_MC146818RTC_H
   6
   7 #ifdef CONFIG_SH_MPC1211
   8 #undef  _ASM_MC146818RTC_H
   9 #undef  RTC_IRQ
  10 #include <asm/mpc1211/mc146818rtc.h>
  11 #else
  12
  13 #include <asm/rtc.h>
  14
  15 #define RTC_ALWAYS_BCD  1
  16
  17 /* FIXME:RTC Interrupt feature is not implemented yet. */
  18 #undef  RTC_IRQ
  19 #define RTC_IRQ         0
  20
  21 #if defined(CONFIG_CPU_SH3)
  22 #define RTC_PORT(n)             (R64CNT+(n)*2)
  23 #define CMOS_READ(addr)         __CMOS_READ(addr,b)
  24 #define CMOS_WRITE(val,addr)    __CMOS_WRITE(val,addr,b)
  25
  26 #elif defined(CONFIG_SH_SECUREEDGE5410)
  27 #include <asm/snapgear/io.h>
  28
  29 #define RTC_PORT(n)             SECUREEDGE_IOPORT_ADDR
  30 #define CMOS_READ(addr)         secureedge5410_cmos_read(addr)
  31 #define CMOS_WRITE(val,addr)    secureedge5410_cmos_write(val,addr)
  32 extern unsigned char secureedge5410_cmos_read(int addr);
  33 extern void secureedge5410_cmos_write(unsigned char val, int addr);
  34
  35 #elif defined(CONFIG_CPU_SH4)
  36 #define RTC_PORT(n)             (R64CNT+(n)*4)
  37 #define CMOS_READ(addr)         __CMOS_READ(addr,w)
  38 #define CMOS_WRITE(val,addr)    __CMOS_WRITE(val,addr,w)
  39 #endif
  40
  41 #define __CMOS_READ(addr, s) ({                                         \
  42         unsigned char val=0, rcr1, rcr2, r64cnt, retry;                 \
  43         switch(addr) {                                                  \
  44                 case RTC_SECONDS:                                       \
  45                         val = ctrl_inb(RSECCNT);                        \
  46                         break;                                          \
  47                 case RTC_SECONDS_ALARM:                                 \
  48                         val = ctrl_inb(RSECAR);                         \
  49                         break;                                          \
  50                 case RTC_MINUTES:                                       \
  51                         val = ctrl_inb(RMINCNT);                        \
  52                         break;                                          \
  53                 case RTC_MINUTES_ALARM:                                 \
  54                         val = ctrl_inb(RMINAR);                         \
  55                         break;                                          \
  56                 case RTC_HOURS:                                         \
  57                         val = ctrl_inb(RHRCNT);                         \
  58                         break;                                          \
  59                 case RTC_HOURS_ALARM:                                   \
  60                         val = ctrl_inb(RHRAR);                          \
  61                         break;                                          \
  62                 case RTC_DAY_OF_WEEK:                                   \
  63                         val = ctrl_inb(RWKCNT);                         \
  64                         break;                                          \
  65                 case RTC_DAY_OF_MONTH:                                  \
  66                         val = ctrl_inb(RDAYCNT);                        \
  67                         break;                                          \
  68                 case RTC_MONTH:                                         \
  69                         val = ctrl_inb(RMONCNT);                        \
  70                         break;                                          \
  71                 case RTC_YEAR:                                          \
  72                         val = ctrl_in##s(RYRCNT);                       \
  73                         break;                                          \
  74                 case RTC_REG_A: /* RTC_FREQ_SELECT */                   \
  75                         rcr2 = ctrl_inb(RCR2);                          \
  76                         val = (rcr2 & RCR2_PESMASK) >> 4;               \
  77                         rcr1 = ctrl_inb(RCR1);                          \
  78                         rcr1 = (rcr1 & (RCR1_CIE | RCR1_AIE)) | RCR1_AF;\
  79                         retry = 0;                                      \
  80                         do {                                            \
  81                                 ctrl_outb(rcr1, RCR1); /* clear CF */   \
  82                                 r64cnt = ctrl_inb(R64CNT);              \
  83                         } while((ctrl_inb(RCR1) & RCR1_CF) && retry++ < 1000);\
  84                         r64cnt ^= RTC_BIT_INVERTED;                     \
  85                         if(r64cnt == 0x7f || r64cnt == 0)               \
  86                                 val |= RTC_UIP;                         \
  87                         break;                                          \
  88                 case RTC_REG_B: /* RTC_CONTROL */                       \
  89                         rcr1 = ctrl_inb(RCR1);                          \
  90                         rcr2 = ctrl_inb(RCR2);                          \
  91                         if(rcr1 & RCR1_CIE)     val |= RTC_UIE;         \
  92                         if(rcr1 & RCR1_AIE)     val |= RTC_AIE;         \
  93                         if(rcr2 & RCR2_PESMASK) val |= RTC_PIE;         \
  94                         if(!(rcr2 & RCR2_START))val |= RTC_SET;         \
  95                         val |= RTC_24H;                                 \
  96                         break;                                          \
  97                 case RTC_REG_C: /* RTC_INTR_FLAGS */                    \
  98                         rcr1 = ctrl_inb(RCR1);                          \
  99                         rcr1 &= ~(RCR1_CF | RCR1_AF);                   \
 100                         ctrl_outb(rcr1, RCR1);                          \
 101                         rcr2 = ctrl_inb(RCR2);                          \
 102                         rcr2 &= ~RCR2_PEF;                              \
 103                         ctrl_outb(rcr2, RCR2);                          \
 104                         break;                                          \
 105                 case RTC_REG_D: /* RTC_VALID */                         \
 106                         /* Always valid ... */                          \
 107                         val = RTC_VRT;                                  \
 108                         break;                                          \
 109                 default:                                                \
 110                         break;                                          \
 111         }                                                               \
 112         val;                                                            \
 113 })
 114
 115 #define __CMOS_WRITE(val, addr, s) ({                                   \
 116         unsigned char rcr1,rcr2;                                        \
 117         switch(addr) {                                                  \
 118                 case RTC_SECONDS:                                       \
 119                         ctrl_outb(val, RSECCNT);                        \
 120                         break;                                          \
 121                 case RTC_SECONDS_ALARM:                                 \
 122                         ctrl_outb(val, RSECAR);                         \
 123                         break;                                          \
 124                 case RTC_MINUTES:                                       \
 125                         ctrl_outb(val, RMINCNT);                        \
 126                         break;                                          \
 127                 case RTC_MINUTES_ALARM:                                 \
 128                         ctrl_outb(val, RMINAR);                         \
 129                         break;                                          \
 130                 case RTC_HOURS:                                         \
 131                         ctrl_outb(val, RHRCNT);                         \
 132                         break;                                          \
 133                 case RTC_HOURS_ALARM:                                   \
 134                         ctrl_outb(val, RHRAR);                          \
 135                         break;                                          \
 136                 case RTC_DAY_OF_WEEK:                                   \
 137                         ctrl_outb(val, RWKCNT);                         \
 138                         break;                                          \
 139                 case RTC_DAY_OF_MONTH:                                  \
 140                         ctrl_outb(val, RDAYCNT);                        \
 141                         break;                                          \
 142                 case RTC_MONTH:                                         \
 143                         ctrl_outb(val, RMONCNT);                        \
 144                         break;                                          \
 145                 case RTC_YEAR:                                          \
 146                         ctrl_out##s((ctrl_in##s(RYRCNT) & 0xff00) | (val & 0xff), RYRCNT);\
 147                         break;                                          \
 148                 case RTC_REG_A: /* RTC_FREQ_SELECT */                   \
 149                         rcr2 = ctrl_inb(RCR2);                          \
 150                         if((val & RTC_DIV_CTL) == RTC_DIV_RESET2)       \
 151                                 rcr2 |= RCR2_RESET;                     \
 152                         ctrl_outb(rcr2, RCR2);                          \
 153                         break;                                          \
 154                 case RTC_REG_B: /* RTC_CONTROL */                       \
 155                         rcr1 = (ctrl_inb(RCR1) & 0x99) | RCR1_AF;       \
 156                         if(val & RTC_AIE) rcr1 |= RCR1_AIE;             \
 157                         else              rcr1 &= ~RCR1_AIE;            \
 158                         if(val & RTC_UIE) rcr1 |= RCR1_CIE;             \
 159                         else              rcr1 &= ~RCR1_CIE;            \
 160                         ctrl_outb(rcr1, RCR1);                          \
 161                         rcr2 = ctrl_inb(RCR2);                          \
 162                         if(val & RTC_SET) rcr2 &= ~RCR2_START;          \
 163                         else              rcr2 |= RCR2_START;           \
 164                         ctrl_outb(rcr2, RCR2);                          \
 165                         break;                                          \
 166                 case RTC_REG_C: /* RTC_INTR_FLAGS */                    \
 167                         break;                                          \
 168                 case RTC_REG_D: /* RTC_VALID */                         \
 169                         break;                                          \
 170                 default:                                                \
 171                         break;                                          \
 172         }                                                               \
 173 })
 174
 175 #endif /* CONFIG_SH_MPC1211 */
 176 #endif /* _ASM_MC146818RTC_H */