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There is no need for a separate common OMAP mailbox module
now that the OMAP1 mailbox driver has been removed. So,
consolidate the two individual OMAP mailbox modules into a
single driver. This streamlines the driver for converting
to mailbox framework.
The following are the main changes:
- collapse mailbox-omap2.c into omap-mailbox.c
- remove omap_mbox_ops and replace the ops calls with
the equivalent functionality.
- simplify the sub-mailbox startup/shutdown functionality,
the one-time operations are moved into probe, and the
pm_runtime_get_sync and pm_runtime_put_sync can be invoked
without using a configuration counter.
- move all definitions from private omap_mbox.h into the
source code, and eliminate this internal header.
- rename some variables that used the omap2_mbox prefix with
a generic omap_mbox prefix.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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The type definition omap_mbox_type_t used for distinguishing
OMAP1 from OMAP2+ mailboxes is no longer needed after the
removal of OMAP1 mailbox driver, and has therefore been
cleaned up. This cleanup also eliminates the need for the
polling logic used for checking the transmit readiness.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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There is a bug in omap2_mbox_probe() where we try do:
mbox->irq = platform_get_irq(pdev, info->irq_id);
if (mbox->irq < 0) {
The problem is that mbox->irq is unsigned so the error handling doesn't
work. I've changed it to a signed integer.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Suman Anna <s-anna@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Omar Ramirez Luna <omar.ramirez@copitl.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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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>
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