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 * @wait_module_idle: ptr to the SoC CM-specific wait_module_idle impl 49 * @module_enable: ptr to the SoC CM-specific module_enable impl 50 * @module_disable: ptr to the SoC CM-specific module_disable impl 51 */ 52 struct cm_ll_data { 53 int (*split_idlest_reg)(void __iomem *idlest_reg, s16 *prcm_inst, 54 u8 *idlest_reg_id); 55 int (*wait_module_ready)(u8 part, s16 prcm_mod, u16 idlest_reg, 56 u8 idlest_shift); 57 int (*wait_module_idle)(u8 part, s16 prcm_mod, u16 idlest_reg, 58 u8 idlest_shift); 59 void (*module_enable)(u8 mode, u8 part, u16 inst, u16 clkctrl_offs); 60 void (*module_disable)(u8 part, u16 inst, u16 clkctrl_offs); 61 }; 62 63 extern int cm_split_idlest_reg(void __iomem *idlest_reg, s16 *prcm_inst, 64 u8 *idlest_reg_id); 65 int omap_cm_wait_module_ready(u8 part, s16 prcm_mod, u16 idlest_reg, 66 u8 idlest_shift); 67 int omap_cm_wait_module_idle(u8 part, s16 prcm_mod, u16 idlest_reg, 68 u8 idlest_shift); 69 int omap_cm_module_enable(u8 mode, u8 part, u16 inst, u16 clkctrl_offs); 70 int omap_cm_module_disable(u8 part, u16 inst, u16 clkctrl_offs); 71 extern int cm_register(struct cm_ll_data *cld); 72 extern int cm_unregister(struct cm_ll_data *cld); 73 74 # endif 75 76 #endif 77