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The mailbox hardware (in OMAP) uses a queued mailbox interrupt
mechanism that provides a communication channel between processors
through a set of registers and their associated interrupt signals
by sending and receiving messages.
The OMAP mailbox framework/driver code is moved to be under
drivers/mailbox, in preparation for adapting to a common mailbox
driver framework. This allows the build for OMAP mailbox to be
enabled (it was disabled during the multi-platform support).
As part of the migration from plat and mach code:
- Kconfig symbols have been renamed to build OMAP1 or OMAP2+ drivers.
- mailbox.h under plat-omap/plat/include has been split into a public
and private header files. The public header has only the API related
functions and types.
- The module name mailbox.ko from plat-omap is changed to
omap-mailbox.ko
- The module name mailbox_mach.ko from mach-omapX is changed as
mailbox_omap1.ko for OMAP1
mailbox_omap2.ko for OMAP2+
Cc: Tony Lindgren <tony@atomide.com>
[gregkh@linuxfoundation.org: ack for staging part]
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Omar Ramirez Luna <omar.ramirez@copitl.com>
Signed-off-by: Suman Anna <s-anna@ti.com>
30 lines
962 B
C
30 lines
962 B
C
/*
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* omap-mailbox: interprocessor communication module for OMAP
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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 OMAP_MAILBOX_H
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#define OMAP_MAILBOX_H
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typedef u32 mbox_msg_t;
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struct omap_mbox;
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typedef int __bitwise omap_mbox_irq_t;
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#define IRQ_TX ((__force omap_mbox_irq_t) 1)
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#define IRQ_RX ((__force omap_mbox_irq_t) 2)
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int omap_mbox_msg_send(struct omap_mbox *, mbox_msg_t msg);
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struct omap_mbox *omap_mbox_get(const char *, struct notifier_block *nb);
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void omap_mbox_put(struct omap_mbox *mbox, struct notifier_block *nb);
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void omap_mbox_save_ctx(struct omap_mbox *mbox);
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void omap_mbox_restore_ctx(struct omap_mbox *mbox);
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void omap_mbox_enable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq);
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void omap_mbox_disable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq);
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#endif /* OMAP_MAILBOX_H */
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