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__ 26 extern void __iomem *cm_base; 27 extern void __iomem *cm2_base; 28 extern 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 */ 49 struct 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 55 extern int cm_split_idlest_reg(void __iomem *idlest_reg, s16 *prcm_inst, 56 u8 *idlest_reg_id); 57 extern int cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift); 58 59 extern int cm_register(struct cm_ll_data *cld); 60 extern int cm_unregister(struct cm_ll_data *cld); 61 62 # endif 63 64 #endif 65