5765e78e84
Based on 1 normalized pattern(s): this source file is released under gpl v2 license no other versions see the copying file included in the main directory of this source distribution for the license terms and conditions extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 28 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531081035.780831265@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/**
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* Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
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*
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* @File ctresource.h
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*
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* @Brief
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* This file contains the definition of generic hardware resources for
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* resource management.
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*
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* @Author Liu Chun
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* @Date May 13 2008
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*/
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#ifndef CTRESOURCE_H
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#define CTRESOURCE_H
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#include <linux/types.h>
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enum RSCTYP {
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SRC,
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SRCIMP,
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AMIXER,
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SUM,
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DAIO,
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NUM_RSCTYP /* This must be the last one and less than 16 */
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};
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struct rsc_ops;
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struct rsc {
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u32 idx:12; /* The index of a resource */
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u32 type:4; /* The type (RSCTYP) of a resource */
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u32 conj:12; /* Current conjugate index */
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u32 msr:4; /* The Master Sample Rate a resource working on */
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void *ctrl_blk; /* Chip specific control info block for a resource */
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struct hw *hw; /* Chip specific object for hardware access means */
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const struct rsc_ops *ops; /* Generic resource operations */
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};
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struct rsc_ops {
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int (*master)(struct rsc *rsc); /* Move to master resource */
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int (*next_conj)(struct rsc *rsc); /* Move to next conjugate resource */
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int (*index)(const struct rsc *rsc); /* Return the index of resource */
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/* Return the output slot number */
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int (*output_slot)(const struct rsc *rsc);
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};
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int
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rsc_init(struct rsc *rsc, u32 idx, enum RSCTYP type, u32 msr, struct hw *hw);
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int rsc_uninit(struct rsc *rsc);
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struct rsc_mgr {
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enum RSCTYP type; /* The type (RSCTYP) of resource to manage */
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unsigned int amount; /* The total amount of a kind of resource */
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unsigned int avail; /* The amount of currently available resources */
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unsigned char *rscs; /* The bit-map for resource allocation */
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void *ctrl_blk; /* Chip specific control info block */
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struct hw *hw; /* Chip specific object for hardware access */
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};
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/* Resource management is based on bit-map mechanism */
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int rsc_mgr_init(struct rsc_mgr *mgr, enum RSCTYP type,
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unsigned int amount, struct hw *hw);
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int rsc_mgr_uninit(struct rsc_mgr *mgr);
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int mgr_get_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int *ridx);
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int mgr_put_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int idx);
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#endif /* CTRESOURCE_H */
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