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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-17 19:28:15 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-17 19:28:15 -0700 |
commit | 0df0914d414a504b975f3cc66ace0c16ef55b7f3 (patch) | |
tree | c97ffa357943a8b226cdec1b9632c4cede813205 /drivers/hwspinlock/hwspinlock_internal.h | |
parent | 6899608533410557e6698cb9d4ff6df553916e98 (diff) | |
parent | 05f689400ea5fa3d71af82f910c8b140f87ad1f3 (diff) | |
download | linux-stable-0df0914d414a504b975f3cc66ace0c16ef55b7f3.tar.gz |
Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (258 commits)
omap: zoom: host should not pull up wl1271's irq line
arm: plat-omap: iommu: fix request_mem_region() error path
OMAP2+: Common CPU DIE ID reading code reads wrong registers for OMAP4430
omap4: mux: Remove duplicate mux modes
omap: iovmm: don't check 'da' to set IOVMF_DA_FIXED flag
omap: iovmm: disallow mapping NULL address when IOVMF_DA_ANON is set
omap2+: mux: Fix compile when CONFIG_OMAP_MUX is not selected
omap4: board-omap4panda: Initialise the serial pads
omap3: board-3430sdp: Initialise the serial pads
omap4: board-4430sdp: Initialise the serial pads
omap2+: mux: Add macro for configuring static with omap_hwmod_mux_init
omap2+: mux: Remove the use of IDLE flag
omap2+: Add separate list for dynamic pads to mux
perf: add OMAP support for the new power events
OMAP4: Add IVA OPP enteries.
OMAP4: Update Voltage Rail Values for MPU, IVA and CORE
OMAP4: Enable 800 MHz and 1 GHz MPU-OPP
OMAP3+: OPP: Replace voltage values with Macros
OMAP3: wdtimer: Fix CORE idle transition
Watchdog: omap_wdt: add fine grain runtime-pm
...
Fix up various conflicts in
- arch/arm/mach-omap2/board-omap3evm.c
- arch/arm/mach-omap2/clock3xxx_data.c
- arch/arm/mach-omap2/usb-musb.c
- arch/arm/plat-omap/include/plat/usb.h
- drivers/usb/musb/musb_core.h
Diffstat (limited to 'drivers/hwspinlock/hwspinlock_internal.h')
-rw-r--r-- | drivers/hwspinlock/hwspinlock_internal.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/hwspinlock/hwspinlock_internal.h b/drivers/hwspinlock/hwspinlock_internal.h new file mode 100644 index 000000000000..69935e6b93e5 --- /dev/null +++ b/drivers/hwspinlock/hwspinlock_internal.h @@ -0,0 +1,61 @@ +/* + * Hardware spinlocks internal header + * + * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com + * + * Contact: Ohad Ben-Cohen <ohad@wizery.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __HWSPINLOCK_HWSPINLOCK_H +#define __HWSPINLOCK_HWSPINLOCK_H + +#include <linux/spinlock.h> +#include <linux/device.h> + +/** + * struct hwspinlock_ops - platform-specific hwspinlock handlers + * + * @trylock: make a single attempt to take the lock. returns 0 on + * failure and true on success. may _not_ sleep. + * @unlock: release the lock. always succeed. may _not_ sleep. + * @relax: optional, platform-specific relax handler, called by hwspinlock + * core while spinning on a lock, between two successive + * invocations of @trylock. may _not_ sleep. + */ +struct hwspinlock_ops { + int (*trylock)(struct hwspinlock *lock); + void (*unlock)(struct hwspinlock *lock); + void (*relax)(struct hwspinlock *lock); +}; + +/** + * struct hwspinlock - this struct represents a single hwspinlock instance + * + * @dev: underlying device, will be used to invoke runtime PM api + * @ops: platform-specific hwspinlock handlers + * @id: a global, unique, system-wide, index of the lock. + * @lock: initialized and used by hwspinlock core + * @owner: underlying implementation module, used to maintain module ref count + * + * Note: currently simplicity was opted for, but later we can squeeze some + * memory bytes by grouping the dev, ops and owner members in a single + * per-platform struct, and have all hwspinlocks point at it. + */ +struct hwspinlock { + struct device *dev; + const struct hwspinlock_ops *ops; + int id; + spinlock_t lock; + struct module *owner; +}; + +#endif /* __HWSPINLOCK_HWSPINLOCK_H */ |