1/* 2 * wdt.h 3 * 4 * DSP-BIOS Bridge driver support functions for TI OMAP processors. 5 * 6 * IO dispatcher for a shared memory channel driver. 7 * 8 * Copyright (C) 2010 Texas Instruments, Inc. 9 * 10 * This package is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 * 14 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 16 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 17 */ 18#ifndef __DSP_WDT3_H_ 19#define __DSP_WDT3_H_ 20 21/* WDT defines */ 22#define OMAP3_WDT3_ISR_OFFSET 0x0018 23 24 25/** 26 * struct dsp_wdt_setting - the basic dsp_wdt_setting structure 27 * @reg_base: pointer to the base of the wdt registers 28 * @sm_wdt: pointer to flags in shared memory 29 * @wdt3_tasklet tasklet to manage wdt event 30 * @fclk handle to wdt3 functional clock 31 * @iclk handle to wdt3 interface clock 32 * 33 * This struct is used in the function to manage wdt3. 34 */ 35 36struct dsp_wdt_setting { 37 void __iomem *reg_base; 38 struct shm *sm_wdt; 39 struct tasklet_struct wdt3_tasklet; 40 struct clk *fclk; 41 struct clk *iclk; 42}; 43 44/** 45 * dsp_wdt_init() - initialize wdt3 module. 46 * 47 * This function initilize to wdt3 module, so that 48 * other wdt3 function can be used. 49 */ 50int dsp_wdt_init(void); 51 52/** 53 * dsp_wdt_exit() - initialize wdt3 module. 54 * 55 * This function frees all resources allocated for wdt3 module. 56 */ 57void dsp_wdt_exit(void); 58 59/** 60 * dsp_wdt_enable() - enable/disable wdt3 61 * @enable: bool value to enable/disable wdt3 62 * 63 * This function enables or disables wdt3 base on @enable value. 64 * 65 */ 66void dsp_wdt_enable(bool enable); 67 68/** 69 * dsp_wdt_sm_set() - store pointer to the share memory 70 * @data: pointer to dspbridge share memory 71 * 72 * This function is used to pass a valid pointer to share memory, 73 * so that the flags can be set in order DSP side can read them. 74 * 75 */ 76void dsp_wdt_sm_set(void *data); 77 78#endif 79