diff options
| author | Tero Kristo | 2012-09-25 19:33:39 +0300 |
|---|---|---|
| committer | Kevin Hilman | 2012-11-05 15:12:40 -0800 |
| commit | 908b75e850c4a6130b680ea7e59b00f80d4cd2d2 (patch) | |
| tree | 8b9480fc931af48286bb8a5fdd1a6cd4c9d54b7b /arch/arm/mach-omap2 | |
| parent | 9a1729cbaaf1a9d1fd27f80cd488ef182fe033a0 (diff) | |
ARM: OMAP: add support for oscillator setup
This contains startup and shutdown times for the oscillator. By default
use ULONG_MAX. Oscillator setup is used for calculating and setting up
latencies for sleep modes that disable oscillator.
Based on a patch from Nishanth Menon <nm@ti.com>.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | arch/arm/mach-omap2/pm.c | 30 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/pm.h | 8 |
2 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c index ea61c32957bd..109a02e02d72 100644 --- a/arch/arm/mach-omap2/pm.c +++ b/arch/arm/mach-omap2/pm.c @@ -39,6 +39,36 @@ static struct omap_device_pm_latency *pm_lats; */ int (*omap_pm_suspend)(void); +/** + * struct omap2_oscillator - Describe the board main oscillator latencies + * @startup_time: oscillator startup latency + * @shutdown_time: oscillator shutdown latency + */ +struct omap2_oscillator { + u32 startup_time; + u32 shutdown_time; +}; + +static struct omap2_oscillator oscillator = { + .startup_time = ULONG_MAX, + .shutdown_time = ULONG_MAX, +}; + +void omap_pm_setup_oscillator(u32 tstart, u32 tshut) +{ + oscillator.startup_time = tstart; + oscillator.shutdown_time = tshut; +} + +void omap_pm_get_oscillator(u32 *tstart, u32 *tshut) +{ + if (!tstart || !tshut) + return; + + *tstart = oscillator.startup_time; + *tshut = oscillator.shutdown_time; +} + static int __init _init_omap_device(char *name) { struct omap_hwmod *oh; diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h index 67d66131cfa7..429028852103 100644 --- a/arch/arm/mach-omap2/pm.h +++ b/arch/arm/mach-omap2/pm.h @@ -129,4 +129,12 @@ static inline int omap4_twl_init(void) } #endif +#ifdef CONFIG_PM +extern void omap_pm_setup_oscillator(u32 tstart, u32 tshut); +extern void omap_pm_get_oscillator(u32 *tstart, u32 *tshut); +#else +static inline void omap_pm_setup_oscillator(u32 tstart, u32 tshut) { } +static inline void omap_pm_get_oscillator(u32 *tstart, u32 *tshut) { } +#endif + #endif |