arch/arm/mach-iop13xx/include/mach/time.h

   1 #ifndef _IOP13XX_TIME_H_
   2 #define _IOP13XX_TIME_H_
   3 #define IRQ_IOP_TIMER0 IRQ_IOP13XX_TIMER0
   4
   5 #define IOP_TMR_EN          0x02
   6 #define IOP_TMR_RELOAD      0x04
   7 #define IOP_TMR_PRIVILEGED 0x08
   8 #define IOP_TMR_RATIO_1_1  0x00
   9
  10 #define IOP13XX_XSI_FREQ_RATIO_MASK     (3 << 19)
  11 #define IOP13XX_XSI_FREQ_RATIO_2        (0 << 19)
  12 #define IOP13XX_XSI_FREQ_RATIO_3        (1 << 19)
  13 #define IOP13XX_XSI_FREQ_RATIO_4        (2 << 19)
  14 #define IOP13XX_CORE_FREQ_MASK          (7 << 16)
  15 #define IOP13XX_CORE_FREQ_600           (0 << 16)
  16 #define IOP13XX_CORE_FREQ_667           (1 << 16)
  17 #define IOP13XX_CORE_FREQ_800           (2 << 16)
  18 #define IOP13XX_CORE_FREQ_933           (3 << 16)
  19 #define IOP13XX_CORE_FREQ_1000          (4 << 16)
  20 #define IOP13XX_CORE_FREQ_1200          (5 << 16)
  21
  22 void iop_init_time(unsigned long tickrate);
  23
  24 static inline unsigned long iop13xx_core_freq(void)
  25 {
  26         unsigned long freq = __raw_readl(IOP13XX_PROCESSOR_FREQ);
  27         freq &= IOP13XX_CORE_FREQ_MASK;
  28         switch (freq) {
  29         case IOP13XX_CORE_FREQ_600:
  30                 return 600000000;
  31         case IOP13XX_CORE_FREQ_667:
  32                 return 667000000;
  33         case IOP13XX_CORE_FREQ_800:
  34                 return 800000000;
  35         case IOP13XX_CORE_FREQ_933:
  36                 return 933000000;
  37         case IOP13XX_CORE_FREQ_1000:
  38                 return 1000000000;
  39         case IOP13XX_CORE_FREQ_1200:
  40                 return 1200000000;
  41         default:
  42                 printk("%s: warning unknown frequency, defaulting to 800Mhz\n",
  43                         __func__);
  44         }
  45
  46         return 800000000;
  47 }
  48
  49 static inline unsigned long iop13xx_xsi_bus_ratio(void)
  50 {
  51         unsigned long  ratio = __raw_readl(IOP13XX_PROCESSOR_FREQ);
  52         ratio &= IOP13XX_XSI_FREQ_RATIO_MASK;
  53         switch (ratio) {
  54         case IOP13XX_XSI_FREQ_RATIO_2:
  55                 return 2;
  56         case IOP13XX_XSI_FREQ_RATIO_3:
  57                 return 3;
  58         case IOP13XX_XSI_FREQ_RATIO_4:
  59                 return 4;
  60         default:
  61                 printk("%s: warning unknown ratio, defaulting to 2\n",
  62                         __func__);
  63         }
  64
  65         return 2;
  66 }
  67
  68 static inline u32 read_tmr0(void)
  69 {
  70         u32 val;
  71         asm volatile("mrc p6, 0, %0, c0, c9, 0" : "=r" (val));
  72         return val;
  73 }
  74
  75 static inline void write_tmr0(u32 val)
  76 {
  77         asm volatile("mcr p6, 0, %0, c0, c9, 0" : : "r" (val));
  78 }
  79
  80 static inline void write_tmr1(u32 val)
  81 {
  82         asm volatile("mcr p6, 0, %0, c1, c9, 0" : : "r" (val));
  83 }
  84
  85 static inline u32 read_tcr0(void)
  86 {
  87         u32 val;
  88         asm volatile("mrc p6, 0, %0, c2, c9, 0" : "=r" (val));
  89         return val;
  90 }
  91
  92 static inline void write_tcr0(u32 val)
  93 {
  94         asm volatile("mcr p6, 0, %0, c2, c9, 0" : : "r" (val));
  95 }
  96
  97 static inline u32 read_tcr1(void)
  98 {
  99         u32 val;
 100         asm volatile("mrc p6, 0, %0, c3, c9, 0" : "=r" (val));
 101         return val;
 102 }
 103
 104 static inline void write_tcr1(u32 val)
 105 {
 106         asm volatile("mcr p6, 0, %0, c3, c9, 0" : : "r" (val));
 107 }
 108
 109 static inline void write_trr0(u32 val)
 110 {
 111         asm volatile("mcr p6, 0, %0, c4, c9, 0" : : "r" (val));
 112 }
 113
 114 static inline void write_trr1(u32 val)
 115 {
 116         asm volatile("mcr p6, 0, %0, c5, c9, 0" : : "r" (val));
 117 }
 118
 119 static inline void write_tisr(u32 val)
 120 {
 121         asm volatile("mcr p6, 0, %0, c6, c9, 0" : : "r" (val));
 122 }
 123 #endif