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 #include <linux/clk/ti.h> 27 28 #include "prcm-common.h" 29 30 extern struct omap_domain_base cm_base; 31 extern struct omap_domain_base cm2_base; 32 extern void omap2_set_globals_cm(void __iomem *cm, void __iomem *cm2); 33 # endif 34 35 /* 36 * MAX_MODULE_DISABLE_TIME: max duration in microseconds to wait for 37 * the PRCM to request that a module enter the inactive state in the 38 * case of OMAP2 & 3. In the case of OMAP4 this is the max duration 39 * in microseconds for the module to reach the inactive state from 40 * a functional state. 41 * XXX FSUSB on OMAP4430 takes ~4ms to idle after reset during 42 * kernel init. 43 */ 44 #define MAX_MODULE_DISABLE_TIME 5000 45 46 # ifndef __ASSEMBLER__ 47 48 /** 49 * struct cm_ll_data - fn ptrs to per-SoC CM function implementations 50 * @split_idlest_reg: ptr to the SoC CM-specific split_idlest_reg impl 51 * @wait_module_ready: ptr to the SoC CM-specific wait_module_ready impl 52 * @wait_module_idle: ptr to the SoC CM-specific wait_module_idle impl 53 * @module_enable: ptr to the SoC CM-specific module_enable impl 54 * @module_disable: ptr to the SoC CM-specific module_disable impl 55 * @xlate_clkctrl: ptr to the SoC CM-specific clkctrl xlate addr impl 56 */ 57 struct cm_ll_data { 58 int (*split_idlest_reg)(struct clk_omap_reg *idlest_reg, s16 *prcm_inst, 59 u8 *idlest_reg_id); 60 int (*wait_module_ready)(u8 part, s16 prcm_mod, u16 idlest_reg, 61 u8 idlest_shift); 62 int (*wait_module_idle)(u8 part, s16 prcm_mod, u16 idlest_reg, 63 u8 idlest_shift); 64 void (*module_enable)(u8 mode, u8 part, u16 inst, u16 clkctrl_offs); 65 void (*module_disable)(u8 part, u16 inst, u16 clkctrl_offs); 66 u32 (*xlate_clkctrl)(u8 part, u16 inst, u16 clkctrl_offs); 67 }; 68 69 extern int cm_split_idlest_reg(struct clk_omap_reg *idlest_reg, s16 *prcm_inst, 70 u8 *idlest_reg_id); 71 int omap_cm_wait_module_ready(u8 part, s16 prcm_mod, u16 idlest_reg, 72 u8 idlest_shift); 73 int omap_cm_wait_module_idle(u8 part, s16 prcm_mod, u16 idlest_reg, 74 u8 idlest_shift); 75 int omap_cm_module_enable(u8 mode, u8 part, u16 inst, u16 clkctrl_offs); 76 int omap_cm_module_disable(u8 part, u16 inst, u16 clkctrl_offs); 77 u32 omap_cm_xlate_clkctrl(u8 part, u16 inst, u16 clkctrl_offs); 78 extern int cm_register(const struct cm_ll_data *cld); 79 extern int cm_unregister(const struct cm_ll_data *cld); 80 int omap_cm_init(void); 81 int omap2_cm_base_init(void); 82 83 # endif 84 85 #endif 86