LXR linux/arch/arm/mach-omap2/cm.h

   1/*
   2 * OMAP2+ Clock Management prototypes
   3 *
   4 * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
   5 * Copyright (C) 2007-2009 Nokia Corporation
   6 *
   7 * Written by Paul Walmsley
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU General Public License version 2 as
  11 * published by the Free Software Foundation.
  12 */
  13#ifndef __ARCH_ASM_MACH_OMAP2_CM_H
  14#define __ARCH_ASM_MACH_OMAP2_CM_H
  15
  16/*
  17 * MAX_MODULE_READY_TIME: max duration in microseconds to wait for the
  18 * PRCM to request that a module exit the inactive state in the case of
  19 * OMAP2 & 3.
  20 * In the case of OMAP4 this is the max duration in microseconds for the
  21 * module to reach the functionnal state from an inactive state.
  22 */
  23#define MAX_MODULE_READY_TIME           2000
  24
  25# ifndef __ASSEMBLER__
  26extern void __iomem *cm_base;
  27extern void __iomem *cm2_base;
  28extern void omap2_set_globals_cm(void __iomem *cm, void __iomem *cm2);
  29# endif
  30
  31/*
  32 * MAX_MODULE_DISABLE_TIME: max duration in microseconds to wait for
  33 * the PRCM to request that a module enter the inactive state in the
  34 * case of OMAP2 & 3.  In the case of OMAP4 this is the max duration
  35 * in microseconds for the module to reach the inactive state from
  36 * a functional state.
  37 * XXX FSUSB on OMAP4430 takes ~4ms to idle after reset during
  38 * kernel init.
  39 */
  40#define MAX_MODULE_DISABLE_TIME         5000
  41
  42# ifndef __ASSEMBLER__
  43
  44/**
  45 * struct cm_ll_data - fn ptrs to per-SoC CM function implementations
  46 * @split_idlest_reg: ptr to the SoC CM-specific split_idlest_reg impl
  47 * @wait_module_ready: ptr to the SoC CM-specific wait_module_ready impl
  48 */
  49struct cm_ll_data {
  50        int (*split_idlest_reg)(void __iomem *idlest_reg, s16 *prcm_inst,
  51                                u8 *idlest_reg_id);
  52        int (*wait_module_ready)(s16 prcm_mod, u8 idlest_id, u8 idlest_shift);
  53};
  54
  55extern int cm_split_idlest_reg(void __iomem *idlest_reg, s16 *prcm_inst,
  56                               u8 *idlest_reg_id);
  57extern int cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift);
  58
  59extern int cm_register(struct cm_ll_data *cld);
  60extern int cm_unregister(struct cm_ll_data *cld);
  61
  62# endif
  63
  64#endif
  65