LXR qemu/include/hw/timer/imx

   1/*
   2 * i.MX EPIT Timer
   3 *
   4 * Copyright (c) 2008 OK Labs
   5 * Copyright (c) 2011 NICTA Pty Ltd
   6 * Originally written by Hans Jiang
   7 * Updated by Peter Chubb
   8 * Updated by Jean-Christophe Dubois <jcd@tribudubois.net>
   9 *
  10 * Permission is hereby granted, free of charge, to any person obtaining a copy
  11 * of this software and associated documentation files (the "Software"), to deal
  12 * in the Software without restriction, including without limitation the rights
  13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14 * copies of the Software, and to permit persons to whom the Software is
  15 * furnished to do so, subject to the following conditions:
  16 *
  17 * The above copyright notice and this permission notice shall be included in
  18 * all copies or substantial portions of the Software.
  19 *
  20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  26 * THE SOFTWARE.
  27 */
  28
  29#ifndef IMX_EPIT_H
  30#define IMX_EPIT_H
  31
  32#include "hw/sysbus.h"
  33#include "hw/ptimer.h"
  34#include "hw/misc/imx_ccm.h"
  35
  36/*
  37 * EPIT: Enhanced periodic interrupt timer
  38 */
  39
  40#define CR_EN       (1 << 0)
  41#define CR_ENMOD    (1 << 1)
  42#define CR_OCIEN    (1 << 2)
  43#define CR_RLD      (1 << 3)
  44#define CR_PRESCALE_SHIFT (4)
  45#define CR_PRESCALE_MASK  (0xfff)
  46#define CR_SWR      (1 << 16)
  47#define CR_IOVW     (1 << 17)
  48#define CR_DBGEN    (1 << 18)
  49#define CR_WAITEN   (1 << 19)
  50#define CR_DOZEN    (1 << 20)
  51#define CR_STOPEN   (1 << 21)
  52#define CR_CLKSRC_SHIFT (24)
  53#define CR_CLKSRC_MASK  (0x3 << CR_CLKSRC_SHIFT)
  54
  55#define EPIT_TIMER_MAX  0XFFFFFFFFUL
  56
  57#define TYPE_IMX_EPIT "imx.epit"
  58#define IMX_EPIT(obj) OBJECT_CHECK(IMXEPITState, (obj), TYPE_IMX_EPIT)
  59
  60typedef struct IMXEPITState{
  61    /*< private >*/
  62    SysBusDevice parent_obj;
  63
  64    /*< public >*/
  65    ptimer_state *timer_reload;
  66    ptimer_state *timer_cmp;
  67    MemoryRegion  iomem;
  68    IMXCCMState  *ccm;
  69
  70    uint32_t cr;
  71    uint32_t sr;
  72    uint32_t lr;
  73    uint32_t cmp;
  74    uint32_t cnt;
  75
  76    uint32_t freq;
  77    qemu_irq irq;
  78} IMXEPITState;
  79
  80#endif /* IMX_EPIT_H */
  81