LXR qemu/include/hw/misc/imx

   1/*
   2 * IMX Clock Control Module base class
   3 *
   4 * Copyright (C) 2012 NICTA
   5 * Updated by Jean-Christophe Dubois <jcd@tribudubois.net>
   6 *
   7 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   8 * See the COPYING file in the top-level directory.
   9 */
  10
  11#ifndef IMX_CCM_H
  12#define IMX_CCM_H
  13
  14#include "hw/sysbus.h"
  15
  16#define CKIL_FREQ 32768 /* nominal 32khz clock */
  17
  18/* PLL control registers */
  19#define PD(v) (((v) >> 26) & 0xf)
  20#define MFD(v) (((v) >> 16) & 0x3ff)
  21#define MFI(v) (((v) >> 10) & 0xf);
  22#define MFN(v) ((v) & 0x3ff)
  23
  24#define PLL_PD(x)               (((x) & 0xf) << 26)
  25#define PLL_MFD(x)              (((x) & 0x3ff) << 16)
  26#define PLL_MFI(x)              (((x) & 0xf) << 10)
  27#define PLL_MFN(x)              (((x) & 0x3ff) << 0)
  28
  29#define TYPE_IMX_CCM "imx.ccm"
  30#define IMX_CCM(obj) \
  31     OBJECT_CHECK(IMXCCMState, (obj), TYPE_IMX_CCM)
  32#define IMX_CCM_CLASS(klass) \
  33     OBJECT_CLASS_CHECK(IMXCCMClass, (klass), TYPE_IMX_CCM)
  34#define IMX_GET_CLASS(obj) \
  35     OBJECT_GET_CLASS(IMXCCMClass, (obj), TYPE_IMX_CCM)
  36
  37typedef struct IMXCCMState {
  38    /* <private> */
  39    SysBusDevice parent_obj;
  40
  41    /* <public> */
  42
  43} IMXCCMState;
  44
  45typedef enum  {
  46    CLK_NONE,
  47    CLK_IPG,
  48    CLK_IPG_HIGH,
  49    CLK_32k,
  50    CLK_EXT,
  51    CLK_HIGH_DIV,
  52    CLK_HIGH,
  53} IMXClk;
  54
  55typedef struct IMXCCMClass {
  56    /* <private> */
  57    SysBusDeviceClass parent_class;
  58
  59    /* <public> */
  60    uint32_t (*get_clock_frequency)(IMXCCMState *s, IMXClk clk);
  61} IMXCCMClass;
  62
  63uint32_t imx_ccm_calc_pll(uint32_t pllreg, uint32_t base_freq);
  64
  65uint32_t imx_ccm_get_clock_frequency(IMXCCMState *s, IMXClk clock);
  66
  67#endif /* IMX_CCM_H */
  68