b4aac487b0
The io module has a io_init() and a io_exit() whose only purpose is to keep a reference counting which is not used at all. This patch removes these functions and the reference count variable. There is no functional changes. Signed-off-by: Víctor Manuel Jáquez Leal <vjaquez@igalia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*
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* io.h
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*
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* DSP-BIOS Bridge driver support functions for TI OMAP processors.
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*
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* The io module manages IO between CHNL and msg_ctrl.
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*
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* Copyright (C) 2005-2006 Texas Instruments, Inc.
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*
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* This package 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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* THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef IO_
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#define IO_
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#include <dspbridge/cfgdefs.h>
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#include <dspbridge/devdefs.h>
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/* IO Objects: */
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struct io_mgr;
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/* IO manager attributes: */
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struct io_attrs {
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u8 birq; /* Channel's I/O IRQ number. */
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bool irq_shared; /* TRUE if the IRQ is shareable. */
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u32 word_size; /* DSP Word size. */
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u32 shm_base; /* Physical base address of shared memory. */
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u32 sm_length; /* Size (in bytes) of shared memory. */
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};
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/*
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* ======== io_create ========
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* Purpose:
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* Create an IO manager object, responsible for managing IO between
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* CHNL and msg_ctrl.
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* Parameters:
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* channel_mgr: Location to store a channel manager object on
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* output.
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* hdev_obj: Handle to a device object.
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* mgr_attrts: IO manager attributes.
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* mgr_attrts->birq: I/O IRQ number.
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* mgr_attrts->irq_shared: TRUE if the IRQ is shareable.
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* mgr_attrts->word_size: DSP Word size in equivalent PC bytes..
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* Returns:
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* 0: Success;
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* -ENOMEM: Insufficient memory for requested resources.
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* -EIO: Unable to plug channel ISR for configured IRQ.
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* -EINVAL: Invalid DSP word size (must be > 0).
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* Invalid base address for DSP communications.
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* Requires:
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* io_man != NULL.
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* mgr_attrts != NULL.
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* Ensures:
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*/
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extern int io_create(struct io_mgr **io_man,
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struct dev_object *hdev_obj,
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const struct io_attrs *mgr_attrts);
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/*
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* ======== io_destroy ========
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* Purpose:
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* Destroy the IO manager.
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* Parameters:
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* hio_mgr: IOmanager object.
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* Returns:
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* 0: Success.
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* -EFAULT: hio_mgr was invalid.
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* Requires:
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* Ensures:
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*/
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extern int io_destroy(struct io_mgr *hio_mgr);
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#endif /* CHNL_ */
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