On Monday 04 July 2011 10:25 AM, Govindraj.R wrote:
> Add API to enable IO pad wakeup capability based on mux dynamic pad and
> wake_up enable flag available from hwmod_mux initialization.
>
> Use the wakeup_enable flag and enable wakeup capability
> for the given pads. Wakeup capability will be enabled/disabled
> during hwmod idle transition based on whether wakeup_flag is
> set or cleared.
>
> Map the enable/disable pad wakeup API's to hwmod_wakeup_enable/disable.
>
> Signed-off-by: Govindraj.R <govindraj.raja@xxxxxx>
> ---
> arch/arm/mach-omap2/omap_hwmod.c | 59 ++++++++++++++++++++++++++++++++++++++
> 1 files changed, 59 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
> index 293fa6c..3b28e0a 100644
> --- a/arch/arm/mach-omap2/omap_hwmod.c
> +++ b/arch/arm/mach-omap2/omap_hwmod.c
> @@ -1770,6 +1770,34 @@ static int __init omap_hwmod_setup_all(void)
> core_initcall(omap_hwmod_setup_all);
>
> /**
> + * omap_hwmod_set_ioring_wakeup - enable io pad wakeup flag.
> + * @oh: struct omap_hwmod *
> + * @set: bool value indicating to set or clear wakeup status.
> + *
> + * Set or Clear wakeup flag for the io_pad.
> + */
> +static int omap_hwmod_set_ioring_wakeup(struct omap_hwmod *oh, bool set_wake)
> +{
> + struct omap_device_pad *pad;
> + int ret = -EINVAL, j;
> +
> + if (oh->mux && oh->mux->enabled) {
> + for (j = 0; j < oh->mux->nr_pads_dynamic; j++) {
> + pad = oh->mux->pads_dynamic[j];
> + if (pad->flags & OMAP_DEVICE_PAD_WAKEUP) {
> + if (set_wake)
> + pad->idle |= OMAP_WAKEUP_EN;
> + else
> + pad->idle &= ~OMAP_WAKEUP_EN;
Will this not erase the other bits ?
Should we read and erase only the wakeup bits.
Am I missing something ?
> + ret = 0;
> + }
> + }
> + }
> +
> + return ret;
> +}
> +
> +/**
> * omap_hwmod_enable - enable an omap_hwmod
> * @oh: struct omap_hwmod *
> *
> @@ -2097,6 +2125,35 @@ int omap_hwmod_del_initiator_dep(struct omap_hwmod *oh,
> {
> return _del_initiator_dep(oh, init_oh);
> }
> +/**
> + * omap_hwmod_enable_ioring_wakeup - Set wakeup flag for iopad.
> + * @oh: struct omap_hwmod *
> + *
> + * Traverse through dynamic pads, if pad is enabled then
> + * set wakeup enable bit flag for the mux pin. Wakeup pad bit
> + * will be set during hwmod idle transistion.
> + * Return error if pads are not enabled or not available.
> + */
> +int omap_hwmod_enable_ioring_wakeup(struct omap_hwmod *oh)
> +{
> + /* Enable pad wake-up capability */
> + return omap_hwmod_set_ioring_wakeup(oh, true);
> +}
> +
> +/**
> + * omap_hwmod_disable_ioring_wakeup - Clear wakeup flag for iopad.
> + * @oh: struct omap_hwmod *
> + *
> + * Traverse through dynamic pads, if pad is enabled then
> + * clear wakeup enable bit flag for the mux pin. Wakeup pad bit
> + * will be set during hwmod idle transistion.
> + * Return error if pads are not enabled or not available.
> + */
> +int omap_hwmod_disable_ioring_wakeup(struct omap_hwmod *oh)
> +{
> + /* Disable pad wakeup capability */
> + return omap_hwmod_set_ioring_wakeup(oh, false);
> +}
>
> /**
> * omap_hwmod_enable_wakeup - allow device to wake up the system
> @@ -2123,6 +2180,7 @@ int omap_hwmod_enable_wakeup(struct omap_hwmod *oh)
> v = oh->_sysc_cache;
> _enable_wakeup(oh, &v);
> _write_sysconfig(v, oh);
> + omap_hwmod_enable_ioring_wakeup(oh);
> spin_unlock_irqrestore(&oh->_lock, flags);
>
> return 0;
> @@ -2153,6 +2211,7 @@ int omap_hwmod_disable_wakeup(struct omap_hwmod *oh)
> v = oh->_sysc_cache;
> _disable_wakeup(oh, &v);
> _write_sysconfig(v, oh);
> + omap_hwmod_disable_ioring_wakeup(oh);
> spin_unlock_irqrestore(&oh->_lock, flags);
>
> return 0;
--
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