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c4ceedcb18
Convert the OMAP clock code's _omap2_module_wait_ready() to use SoC-independent CM functions that are provided by the CM code, rather than using a deprecated function from mach-omap2/prcm.c. This facilitates the future conversion of the CM code to a driver, and also removes a mach-omap2/prcm.c user. mach-omap2/prcm.c will be removed by a subsequent patch. Some modules have IDLEST registers that aren't in the CM module, such as the AM3517 IDLEST bits. So we also need a fallback function for these non-CM odd cases. Create a temporary one in mach-omap2/clock.c, intended to exist until the SCM drivers are ready. Signed-off-by: Paul Walmsley <paul@pwsan.com> Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/*
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* OMAP2+ Clock Management prototypes
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*
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* Copyright (C) 2007-2009 Texas Instruments, Inc.
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* Copyright (C) 2007-2009 Nokia Corporation
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*
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* Written by Paul Walmsley
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ARCH_ASM_MACH_OMAP2_CM_H
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#define __ARCH_ASM_MACH_OMAP2_CM_H
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/*
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* MAX_MODULE_READY_TIME: max duration in microseconds to wait for the
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* PRCM to request that a module exit the inactive state in the case of
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* OMAP2 & 3.
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* In the case of OMAP4 this is the max duration in microseconds for the
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* module to reach the functionnal state from an inactive state.
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*/
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#define MAX_MODULE_READY_TIME 2000
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/*
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* MAX_MODULE_DISABLE_TIME: max duration in microseconds to wait for
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* the PRCM to request that a module enter the inactive state in the
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* case of OMAP2 & 3. In the case of OMAP4 this is the max duration
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* in microseconds for the module to reach the inactive state from
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* a functional state.
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* XXX FSUSB on OMAP4430 takes ~4ms to idle after reset during
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* kernel init.
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*/
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#define MAX_MODULE_DISABLE_TIME 5000
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# ifndef __ASSEMBLER__
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/**
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* struct cm_ll_data - fn ptrs to per-SoC CM function implementations
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* @split_idlest_reg: ptr to the SoC CM-specific split_idlest_reg impl
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* @wait_module_ready: ptr to the SoC CM-specific wait_module_ready impl
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*/
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struct cm_ll_data {
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int (*split_idlest_reg)(void __iomem *idlest_reg, s16 *prcm_inst,
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u8 *idlest_reg_id);
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int (*wait_module_ready)(s16 prcm_mod, u8 idlest_id, u8 idlest_shift);
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};
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extern int cm_split_idlest_reg(void __iomem *idlest_reg, s16 *prcm_inst,
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u8 *idlest_reg_id);
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extern int cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift);
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extern int cm_register(struct cm_ll_data *cld);
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extern int cm_unregister(struct cm_ll_data *cld);
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# endif
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#endif
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