* Paul Walmsley <paul@xxxxxxxxxxx> [080923 16:22]:
> On Tue, 16 Sep 2008, Tero Kristo wrote:
>
> > Hardware supervised control for clockdomain power state transitions now
> > enabled in omap3_pm_init(). Also fixed set_pwrdm_state() to allow state
> > changes between sleep states (i.e. RET<->OFF.)
> >
> > Signed-off-by: Tero Kristo <tero.kristo@xxxxxxxxx>
>
> Acked-by: Paul Walmsley <paul@xxxxxxxxx>
Pushing today.
Tony
>
>
> > ---
> > arch/arm/mach-omap2/pm34xx.c | 38 +++++++++++++++++++-------------------
> > 1 files changed, 19 insertions(+), 19 deletions(-)
> >
> > diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
> > index 01b637a..2bccdab 100644
> > --- a/arch/arm/mach-omap2/pm34xx.c
> > +++ b/arch/arm/mach-omap2/pm34xx.c
> > @@ -227,28 +227,13 @@ static int omap3_can_sleep(void)
> > return 1;
> > }
> >
> > -/* _clkdm_deny_idle - private callback function used by set_pwrdm_state() */
> > -static int _clkdm_deny_idle(struct powerdomain *pwrdm,
> > - struct clockdomain *clkdm)
> > -{
> > - omap2_clkdm_deny_idle(clkdm);
> > - return 0;
> > -}
> > -
> > -/* _clkdm_allow_idle - private callback function used by set_pwrdm_state() */
> > -static int _clkdm_allow_idle(struct powerdomain *pwrdm,
> > - struct clockdomain *clkdm)
> > -{
> > - omap2_clkdm_allow_idle(clkdm);
> > - return 0;
> > -}
> > -
> > /* This sets pwrdm state (other than mpu & core. Currently only ON &
> > * RET are supported. Function is assuming that clkdm doesn't have
> > * hw_sup mode enabled. */
> > static int set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
> > {
> > u32 cur_state;
> > + int sleep_switch = 0;
> > int ret = 0;
> >
> > if (pwrdm == NULL || IS_ERR(pwrdm))
> > @@ -259,8 +244,12 @@ static int set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
> > if (cur_state == state)
> > return ret;
> >
> > - pwrdm_for_each_clkdm(pwrdm, _clkdm_deny_idle);
> > -
> > + if (pwrdm_read_pwrst(pwrdm) < PWRDM_POWER_ON) {
> > + omap2_clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
> > + sleep_switch = 1;
> > + pwrdm_wait_transition(pwrdm);
> > + }
> > +
> > ret = pwrdm_set_next_pwrst(pwrdm, state);
> > if (ret) {
> > printk(KERN_ERR "Unable to set state of powerdomain: %s\n",
> > @@ -268,7 +257,10 @@ static int set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
> > goto err;
> > }
> >
> > - pwrdm_for_each_clkdm(pwrdm, _clkdm_allow_idle);
> > + if (sleep_switch) {
> > + omap2_clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
> > + pwrdm_wait_transition(pwrdm);
> > + }
> >
> > err:
> > return ret;
> > @@ -540,6 +532,12 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm)
> > return set_pwrdm_state(pwrst->pwrdm, pwrst->next_state);
> > }
> >
> > +static int __init clkdms_setup(struct clockdomain *clkdm)
> > +{
> > + omap2_clkdm_allow_idle(clkdm);
> > + return 0;
> > +}
> > +
> > int __init omap3_pm_init(void)
> > {
> > struct power_state *pwrst;
> > @@ -566,6 +564,8 @@ int __init omap3_pm_init(void)
> > goto err2;
> > }
> >
> > + (void) clkdm_for_each(clkdms_setup);
> > +
> > mpu_pwrdm = pwrdm_lookup("mpu_pwrdm");
> > if (mpu_pwrdm == NULL) {
> > printk(KERN_ERR "Failed to get mpu_pwrdm\n");
> > --
> > 1.5.4.3
> >
> > --
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> >
>
>
> - Paul
> --
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