| 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 |