diff options
Diffstat (limited to 'include/hw/timer/imx_epit.h')
| -rw-r--r-- | include/hw/timer/imx_epit.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/include/hw/timer/imx_epit.h b/include/hw/timer/imx_epit.h new file mode 100644 index 0000000000..c5328aefe1 --- /dev/null +++ b/include/hw/timer/imx_epit.h @@ -0,0 +1,79 @@ +/* + * i.MX EPIT Timer + * + * Copyright (c) 2008 OK Labs + * Copyright (c) 2011 NICTA Pty Ltd + * Originally written by Hans Jiang + * Updated by Peter Chubb + * Updated by Jean-Christophe Dubois <jcd@tribudubois.net> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef IMX_EPIT_H +#define IMX_EPIT_H + +#include "hw/sysbus.h" +#include "hw/ptimer.h" + +/* + * EPIT: Enhanced periodic interrupt timer + */ + +#define CR_EN (1 << 0) +#define CR_ENMOD (1 << 1) +#define CR_OCIEN (1 << 2) +#define CR_RLD (1 << 3) +#define CR_PRESCALE_SHIFT (4) +#define CR_PRESCALE_MASK (0xfff) +#define CR_SWR (1 << 16) +#define CR_IOVW (1 << 17) +#define CR_DBGEN (1 << 18) +#define CR_WAITEN (1 << 19) +#define CR_DOZEN (1 << 20) +#define CR_STOPEN (1 << 21) +#define CR_CLKSRC_SHIFT (24) +#define CR_CLKSRC_MASK (0x3 << CR_CLKSRC_SHIFT) + +#define EPIT_TIMER_MAX 0XFFFFFFFFUL + +#define TYPE_IMX_EPIT "imx.epit" +#define IMX_EPIT(obj) OBJECT_CHECK(IMXEPITState, (obj), TYPE_IMX_EPIT) + +typedef struct IMXEPITState{ + /*< private >*/ + SysBusDevice parent_obj; + + /*< public >*/ + ptimer_state *timer_reload; + ptimer_state *timer_cmp; + MemoryRegion iomem; + DeviceState *ccm; + + uint32_t cr; + uint32_t sr; + uint32_t lr; + uint32_t cmp; + uint32_t cnt; + + uint32_t freq; + qemu_irq irq; +} IMXEPITState; + +#endif /* IMX_EPIT_H */ |