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| author | Jaroslav Kysela <perex@hera.kernel.org> | 2005-06-21 14:39:41 (GMT) |
|---|---|---|
| committer | Jaroslav Kysela <perex@hera.kernel.org> | 2005-06-21 14:39:41 (GMT) |
| commit | fae6ec69c84d71b1d5bda9ede1a262c1681684aa (patch) | |
| tree | eb4aff9a5c2b7d04ce09a3717bb1dd4a79fe7595 /arch/arm/mach-pxa/pxa27x.c | |
| parent | bbc0274e9bb2e3f1d724d445a2bd32566b9b66f7 (diff) | |
| parent | 1d345dac1f30af1cd9f3a1faa12f9f18f17f236e (diff) | |
| download | linux-fsl-qoriq-fae6ec69c84d71b1d5bda9ede1a262c1681684aa.tar.xz | |
Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Diffstat (limited to 'arch/arm/mach-pxa/pxa27x.c')
| -rw-r--r-- | arch/arm/mach-pxa/pxa27x.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c index 7e863af..893964f 100644 --- a/arch/arm/mach-pxa/pxa27x.c +++ b/arch/arm/mach-pxa/pxa27x.c @@ -120,6 +120,42 @@ EXPORT_SYMBOL(get_clk_frequency_khz); EXPORT_SYMBOL(get_memclk_frequency_10khz); EXPORT_SYMBOL(get_lcdclk_frequency_10khz); +#ifdef CONFIG_PM + +int pxa_cpu_pm_prepare(suspend_state_t state) +{ + switch (state) { + case PM_SUSPEND_MEM: + return 0; + default: + return -EINVAL; + } +} + +void pxa_cpu_pm_enter(suspend_state_t state) +{ + extern void pxa_cpu_standby(void); + extern void pxa_cpu_suspend(unsigned int); + extern void pxa_cpu_resume(void); + + CKEN = CKEN22_MEMC | CKEN9_OSTIMER; + + /* ensure voltage-change sequencer not initiated, which hangs */ + PCFR &= ~PCFR_FVC; + + /* Clear edge-detect status register. */ + PEDR = 0xDF12FE1B; + + switch (state) { + case PM_SUSPEND_MEM: + /* set resume return address */ + PSPR = virt_to_phys(pxa_cpu_resume); + pxa_cpu_suspend(3); + break; + } +} + +#endif /* * device registration specific to PXA27x. |