169d88a00SPaul Walmsley /* 259fb659bSPaul Walmsley * OMAP2+ Clock Management prototypes 369d88a00SPaul Walmsley * 4d9a16f9aSPaul Walmsley * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc. 59b47267fSRajendra Nayak * Copyright (C) 2007-2009 Nokia Corporation 669d88a00SPaul Walmsley * 769d88a00SPaul Walmsley * Written by Paul Walmsley 869d88a00SPaul Walmsley * 969d88a00SPaul Walmsley * This program is free software; you can redistribute it and/or modify 1069d88a00SPaul Walmsley * it under the terms of the GNU General Public License version 2 as 1169d88a00SPaul Walmsley * published by the Free Software Foundation. 1269d88a00SPaul Walmsley */ 1359fb659bSPaul Walmsley #ifndef __ARCH_ASM_MACH_OMAP2_CM_H 1459fb659bSPaul Walmsley #define __ARCH_ASM_MACH_OMAP2_CM_H 1569d88a00SPaul Walmsley 16d9e6625cSBenoit Cousson /* 17d9e6625cSBenoit Cousson * MAX_MODULE_READY_TIME: max duration in microseconds to wait for the 18d9e6625cSBenoit Cousson * PRCM to request that a module exit the inactive state in the case of 19d9e6625cSBenoit Cousson * OMAP2 & 3. 20d9e6625cSBenoit Cousson * In the case of OMAP4 this is the max duration in microseconds for the 21d9e6625cSBenoit Cousson * module to reach the functionnal state from an inactive state. 22d9e6625cSBenoit Cousson */ 23d9e6625cSBenoit Cousson #define MAX_MODULE_READY_TIME 2000 24d9e6625cSBenoit Cousson 25d9a16f9aSPaul Walmsley # ifndef __ASSEMBLER__ 266c0afb50STero Kristo #include <linux/clk/ti.h> 2790129336STero Kristo 2890129336STero Kristo #include "prcm-common.h" 2990129336STero Kristo 3090129336STero Kristo extern struct omap_domain_base cm_base; 3190129336STero Kristo extern struct omap_domain_base cm2_base; 32d9a16f9aSPaul Walmsley extern void omap2_set_globals_cm(void __iomem *cm, void __iomem *cm2); 33d9a16f9aSPaul Walmsley # endif 34d9a16f9aSPaul Walmsley 35b8f15b7eSPaul Walmsley /* 36b8f15b7eSPaul Walmsley * MAX_MODULE_DISABLE_TIME: max duration in microseconds to wait for 37b8f15b7eSPaul Walmsley * the PRCM to request that a module enter the inactive state in the 38b8f15b7eSPaul Walmsley * case of OMAP2 & 3. In the case of OMAP4 this is the max duration 39b8f15b7eSPaul Walmsley * in microseconds for the module to reach the inactive state from 40b8f15b7eSPaul Walmsley * a functional state. 41b8f15b7eSPaul Walmsley * XXX FSUSB on OMAP4430 takes ~4ms to idle after reset during 42b8f15b7eSPaul Walmsley * kernel init. 43b8f15b7eSPaul Walmsley */ 44b8f15b7eSPaul Walmsley #define MAX_MODULE_DISABLE_TIME 5000 45b8f15b7eSPaul Walmsley 4621325b25SPaul Walmsley # ifndef __ASSEMBLER__ 4721325b25SPaul Walmsley 4821325b25SPaul Walmsley /** 4921325b25SPaul Walmsley * struct cm_ll_data - fn ptrs to per-SoC CM function implementations 50c4ceedcbSPaul Walmsley * @split_idlest_reg: ptr to the SoC CM-specific split_idlest_reg impl 51c4ceedcbSPaul Walmsley * @wait_module_ready: ptr to the SoC CM-specific wait_module_ready impl 52a8ae5afaSTero Kristo * @wait_module_idle: ptr to the SoC CM-specific wait_module_idle impl 53128603f0STero Kristo * @module_enable: ptr to the SoC CM-specific module_enable impl 54128603f0STero Kristo * @module_disable: ptr to the SoC CM-specific module_disable impl 5521325b25SPaul Walmsley */ 56c4ceedcbSPaul Walmsley struct cm_ll_data { 576c0afb50STero Kristo int (*split_idlest_reg)(struct clk_omap_reg *idlest_reg, s16 *prcm_inst, 58c4ceedcbSPaul Walmsley u8 *idlest_reg_id); 59021b6ff0STero Kristo int (*wait_module_ready)(u8 part, s16 prcm_mod, u16 idlest_reg, 60021b6ff0STero Kristo u8 idlest_shift); 61a8ae5afaSTero Kristo int (*wait_module_idle)(u8 part, s16 prcm_mod, u16 idlest_reg, 62a8ae5afaSTero Kristo u8 idlest_shift); 63128603f0STero Kristo void (*module_enable)(u8 mode, u8 part, u16 inst, u16 clkctrl_offs); 64128603f0STero Kristo void (*module_disable)(u8 part, u16 inst, u16 clkctrl_offs); 65c4ceedcbSPaul Walmsley }; 66c4ceedcbSPaul Walmsley 676c0afb50STero Kristo extern int cm_split_idlest_reg(struct clk_omap_reg *idlest_reg, s16 *prcm_inst, 68c4ceedcbSPaul Walmsley u8 *idlest_reg_id); 69021b6ff0STero Kristo int omap_cm_wait_module_ready(u8 part, s16 prcm_mod, u16 idlest_reg, 70021b6ff0STero Kristo u8 idlest_shift); 71a8ae5afaSTero Kristo int omap_cm_wait_module_idle(u8 part, s16 prcm_mod, u16 idlest_reg, 72a8ae5afaSTero Kristo u8 idlest_shift); 73128603f0STero Kristo int omap_cm_module_enable(u8 mode, u8 part, u16 inst, u16 clkctrl_offs); 74128603f0STero Kristo int omap_cm_module_disable(u8 part, u16 inst, u16 clkctrl_offs); 75a529f8deSBhumika Goyal extern int cm_register(const struct cm_ll_data *cld); 76a529f8deSBhumika Goyal extern int cm_unregister(const struct cm_ll_data *cld); 77fe87414fSTero Kristo int omap_cm_init(void); 785970ca2dSTero Kristo int omap2_cm_base_init(void); 7921325b25SPaul Walmsley 8021325b25SPaul Walmsley # endif 8121325b25SPaul Walmsley 8269d88a00SPaul Walmsley #endif 83