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| author | Eric Miao <eric.y.miao@gmail.com> | 2010-11-23 17:07:48 +0800 |
|---|---|---|
| committer | Eric Miao <eric.y.miao@gmail.com> | 2010-12-18 21:02:03 +0800 |
| commit | aae8224ddd72e045bb92eaf6b73b89282c771c69 (patch) | |
| tree | e0176e31c5185d8f180f607a252da9061ff0a63b /arch/arm/mach-pxa/clock-pxa3xx.c | |
| parent | f113fe4e844be15394edcbc32b0ec196cdd0a0ff (diff) | |
| download | linux-rt-aae8224ddd72e045bb92eaf6b73b89282c771c69.tar.gz | |
ARM: pxa: introduce pxa3xx_clock_sysclass for clock suspend/resume
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'arch/arm/mach-pxa/clock-pxa3xx.c')
| -rw-r--r-- | arch/arm/mach-pxa/clock-pxa3xx.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/clock-pxa3xx.c b/arch/arm/mach-pxa/clock-pxa3xx.c index 34a36c4af19b..dd122d981752 100644 --- a/arch/arm/mach-pxa/clock-pxa3xx.c +++ b/arch/arm/mach-pxa/clock-pxa3xx.c @@ -159,3 +159,41 @@ const struct clkops clk_pxa3xx_pout_ops = { .enable = clk_pout_enable, .disable = clk_pout_disable, }; + +#ifdef CONFIG_PM +static uint32_t cken[2]; +static uint32_t accr; + +static int pxa3xx_clock_suspend(struct sys_device *d, pm_message_t state) +{ + cken[0] = CKENA; + cken[1] = CKENB; + accr = ACCR; + return 0; +} + +static int pxa3xx_clock_resume(struct sys_device *d) +{ + ACCR = accr; + CKENA = cken[0]; + CKENB = cken[1]; + return 0; +} +#else +#define pxa3xx_clock_suspend NULL +#define pxa3xx_clock_resume NULL +#endif + +struct sysdev_class pxa3xx_clock_sysclass = { + .name = "pxa3xx-clock", + .suspend = pxa3xx_clock_suspend, + .resume = pxa3xx_clock_resume, +}; + +static int __init pxa3xx_clock_init(void) +{ + if (cpu_is_pxa3xx()) + return sysdev_class_register(&pxa3xx_clock_sysclass); + return 0; +} +postcore_initcall(pxa3xx_clock_init); |