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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-25 13:46:56 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-25 13:46:56 -0700 |
commit | 7b6181e06841f5ad15c4ff708b967b4db65a64de (patch) | |
tree | bdfcf5b74b692f76581156e452d268b64c795200 /arch/arm/mach-omap2/pm_bus.c | |
parent | 72e58063d63c5f0a7bf65312f1e3a5ed9bb5c2ff (diff) | |
parent | bc487fb341af05120bccb9f59ce76302391dcc77 (diff) | |
download | blackbird-op-linux-7b6181e06841f5ad15c4ff708b967b4db65a64de.tar.gz blackbird-op-linux-7b6181e06841f5ad15c4ff708b967b4db65a64de.zip |
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: (163 commits)
omap: complete removal of machine_desc.io_pg_offst and .phys_io
omap: UART: fix wakeup registers for OMAP24xx UART2
omap: Fix spotty MMC voltages
ASoC: OMAP4: MCPDM: Remove unnecessary include of plat/control.h
serial: omap-serial: fix signess error
OMAP3: DMA: Errata i541: sDMA FIFO draining does not finish
omap: dma: Fix buffering disable bit setting for omap24xx
omap: serial: Fix the boot-up crash/reboot without CONFIG_PM
OMAP3: PM: fix scratchpad memory accesses for off-mode
omap4: pandaboard: enable the ehci port on pandaboard
omap4: pandaboard: Fix the init if CONFIG_MMC_OMAP_HS is not set
omap4: pandaboard: remove unused hsmmc definition
OMAP: McBSP: Remove null omap44xx ops comment
OMAP: McBSP: Swap CLKS source definition
OMAP: McBSP: Fix CLKR and FSR signal muxing
OMAP2+: clock: reduce the amount of standard debugging while disabling unused clocks
OMAP: control: move plat-omap/control.h to mach-omap2/control.h
OMAP: split plat-omap/common.c
OMAP: McBSP: implement functional clock switching via clock framework
OMAP: McBSP: implement McBSP CLKR and FSR signal muxing via mach-omap2/mcbsp.c
...
Fixed up trivial conflicts in arch/arm/mach-omap2/
{board-zoom-peripherals.c,devices.c} as per Tony
Diffstat (limited to 'arch/arm/mach-omap2/pm_bus.c')
-rw-r--r-- | arch/arm/mach-omap2/pm_bus.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pm_bus.c b/arch/arm/mach-omap2/pm_bus.c new file mode 100644 index 000000000000..784989f8f2f5 --- /dev/null +++ b/arch/arm/mach-omap2/pm_bus.c @@ -0,0 +1,85 @@ +/* + * Runtime PM support code for OMAP + * + * Author: Kevin Hilman, Deep Root Systems, LLC + * + * Copyright (C) 2010 Texas Instruments, Inc. + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/io.h> +#include <linux/pm_runtime.h> +#include <linux/platform_device.h> +#include <linux/mutex.h> + +#include <plat/omap_device.h> +#include <plat/omap-pm.h> + +#ifdef CONFIG_PM_RUNTIME +int omap_pm_runtime_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + int r, ret = 0; + + dev_dbg(dev, "%s\n", __func__); + + ret = pm_generic_runtime_suspend(dev); + + if (!ret && dev->parent == &omap_device_parent) { + r = omap_device_idle(pdev); + WARN_ON(r); + } + + return ret; +}; + +int omap_pm_runtime_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + int r; + + dev_dbg(dev, "%s\n", __func__); + + if (dev->parent == &omap_device_parent) { + r = omap_device_enable(pdev); + WARN_ON(r); + } + + return pm_generic_runtime_resume(dev); +}; +#else +#define omap_pm_runtime_suspend NULL +#define omap_pm_runtime_resume NULL +#endif /* CONFIG_PM_RUNTIME */ + +static int __init omap_pm_runtime_init(void) +{ + const struct dev_pm_ops *pm; + struct dev_pm_ops *omap_pm; + + pm = platform_bus_get_pm_ops(); + if (!pm) { + pr_err("%s: unable to get dev_pm_ops from platform_bus\n", + __func__); + return -ENODEV; + } + + omap_pm = kmemdup(pm, sizeof(struct dev_pm_ops), GFP_KERNEL); + if (!omap_pm) { + pr_err("%s: unable to alloc memory for new dev_pm_ops\n", + __func__); + return -ENOMEM; + } + + omap_pm->runtime_suspend = omap_pm_runtime_suspend; + omap_pm->runtime_resume = omap_pm_runtime_resume; + + platform_bus_set_pm_ops(omap_pm); + + return 0; +} +core_initcall(omap_pm_runtime_init); |