arch/arm/plat-omap/include/plat/system.h

   1 /*
   2  * Copied from arch/arm/mach-sa1100/include/mach/system.h
   3  * Copyright (c) 1999 Nicolas Pitre <nico@fluxnic.net>
   4  */
   5 #ifndef __ASM_ARCH_SYSTEM_H
   6 #define __ASM_ARCH_SYSTEM_H
   7 #include <linux/clk.h>
   8
   9 #include <asm/mach-types.h>
  10 #include <mach/hardware.h>
  11
  12 #include <plat/prcm.h>
  13
  14 #ifndef CONFIG_MACH_VOICEBLUE
  15 #define voiceblue_reset()               do {} while (0)
  16 #else
  17 extern void voiceblue_reset(void);
  18 #endif
  19
  20 static inline void arch_idle(void)
  21 {
  22         cpu_do_idle();
  23 }
  24
  25 static inline void omap1_arch_reset(char mode, const char *cmd)
  26 {
  27         /*
  28          * Workaround for 5912/1611b bug mentioned in sprz209d.pdf p. 28
  29          * "Global Software Reset Affects Traffic Controller Frequency".
  30          */
  31         if (cpu_is_omap5912()) {
  32                 omap_writew(omap_readw(DPLL_CTL) & ~(1 << 4),
  33                                  DPLL_CTL);
  34                 omap_writew(0x8, ARM_RSTCT1);
  35         }
  36
  37         if (machine_is_voiceblue())
  38                 voiceblue_reset();
  39         else
  40                 omap_writew(1, ARM_RSTCT1);
  41 }
  42
  43 static inline void arch_reset(char mode, const char *cmd)
  44 {
  45         if (!cpu_class_is_omap2())
  46                 omap1_arch_reset(mode, cmd);
  47         else
  48                 omap_prcm_arch_reset(mode, cmd);
  49 }
  50
  51 #endif