include/asm-arm/arch-iop13xx/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 unsigned long iop_gettimeoffset(void);
  24
  25 static inline unsigned long iop13xx_core_freq(void)
  26 {
  27         unsigned long freq = __raw_readl(IOP13XX_PROCESSOR_FREQ);
  28         freq &= IOP13XX_CORE_FREQ_MASK;
  29         switch (freq) {
  30         case IOP13XX_CORE_FREQ_600:
  31                 return 600000000;
  32         case IOP13XX_CORE_FREQ_667:
  33                 return 667000000;
  34         case IOP13XX_CORE_FREQ_800:
  35                 return 800000000;
  36         case IOP13XX_CORE_FREQ_933:
  37                 return 933000000;
  38         case IOP13XX_CORE_FREQ_1000:
  39                 return 1000000000;
  40         case IOP13XX_CORE_FREQ_1200:
  41                 return 1200000000;
  42         default:
  43                 printk("%s: warning unknown frequency, defaulting to 800Mhz\n",
  44                         __FUNCTION__);
  45         }
  46
  47         return 800000000;
  48 }
  49
  50 static inline unsigned long iop13xx_xsi_bus_ratio(void)
  51 {
  52         unsigned long  ratio = __raw_readl(IOP13XX_PROCESSOR_FREQ);
  53         ratio &= IOP13XX_XSI_FREQ_RATIO_MASK;
  54         switch (ratio) {
  55         case IOP13XX_XSI_FREQ_RATIO_2:
  56                 return 2;
  57         case IOP13XX_XSI_FREQ_RATIO_3:
  58                 return 3;
  59         case IOP13XX_XSI_FREQ_RATIO_4:
  60                 return 4;
  61         default:
  62                 printk("%s: warning unknown ratio, defaulting to 2\n",
  63                         __FUNCTION__);
  64         }
  65
  66         return 2;
  67 }
  68
  69 static inline void write_tmr0(u32 val)
  70 {
  71         asm volatile("mcr p6, 0, %0, c0, c9, 0" : : "r" (val));
  72 }
  73
  74 static inline void write_tmr1(u32 val)
  75 {
  76         asm volatile("mcr p6, 0, %0, c1, c9, 0" : : "r" (val));
  77 }
  78
  79 static inline u32 read_tcr0(void)
  80 {
  81         u32 val;
  82         asm volatile("mrc p6, 0, %0, c2, c9, 0" : "=r" (val));
  83         return val;
  84 }
  85
  86 static inline u32 read_tcr1(void)
  87 {
  88         u32 val;
  89         asm volatile("mrc p6, 0, %0, c3, c9, 0" : "=r" (val));
  90         return val;
  91 }
  92
  93 static inline void write_trr0(u32 val)
  94 {
  95         asm volatile("mcr p6, 0, %0, c4, c9, 0" : : "r" (val));
  96 }
  97
  98 static inline void write_trr1(u32 val)
  99 {
 100         asm volatile("mcr p6, 0, %0, c5, c9, 0" : : "r" (val));
 101 }
 102
 103 static inline void write_tisr(u32 val)
 104 {
 105         asm volatile("mcr p6, 0, %0, c6, c9, 0" : : "r" (val));
 106 }
 107 #endif