On Monday 14 November 2011 05:14 PM, Shubhrajyoti wrote:
> 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 ?
My bad please ignore
>> + 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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