[PATCHv5 06/14] arm: omap: add support for oscillator setup

[Menon, Nishanth]

On Tue, Feb 21, 2012 at 08:04, Tero Kristo <t-kristo at ti.com> wrote:
> 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.
>
> Signed-off-by: Tero Kristo <t-kristo at ti.com>
> ---
>  arch/arm/mach-omap2/pm.c |   27 +++++++++++++++++++++++++++
>  arch/arm/mach-omap2/pm.h |    8 ++++++++
>  2 files changed, 35 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
> index 1881fe9..2402e8e 100644
> --- a/arch/arm/mach-omap2/pm.c
> +++ b/arch/arm/mach-omap2/pm.c
> @@ -28,6 +28,33 @@
>
>  static struct omap_device_pm_latency *pm_lats;
>
> +/**
> + * 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)
> +{

Maybe a nitpick - variable check needed?

Regards,
Nishanth Menon


> +       *tstart = oscillator.startup_time;
> +       *tshut = oscillator.shutdown_time;
> +}
> +
>  static int _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 ec8f874..797d2da 100644
> --- a/arch/arm/mach-omap2/pm.h
> +++ b/arch/arm/mach-omap2/pm.h
> @@ -141,4 +141,12 @@ 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
> --
> 1.7.4.1
>
>
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