Merge tag 'omap-cleanup-b-for-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.9/pm

Several OMAP2+ power management fixes, optimizations, and cleanup.
This series is a prerequisite for the functional powerdomain
conversion series.

Basic test logs for this branch are here:

    http://www.pwsan.com/omap/testlogs/pm_cleanup_fixes_3.9/20130129150017/

1 files changed, 2 insertions, 63 deletions

diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index 9627547ee72a..9a9be3c9f208 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -106,80 +106,19 @@ static void __init omap2_init_processor_devices(void)
         }
 }
 
-/* Types of sleep_switch used in omap_set_pwrdm_state */
-#define FORCEWAKEUP_SWITCH      0
-#define LOWPOWERSTATE_SWITCH    1
-
 int __init omap_pm_clkdms_setup(struct clockdomain *clkdm, void *unused)
 {
+        /* XXX The usecount test is racy */
         if ((clkdm->flags & CLKDM_CAN_ENABLE_AUTO) &&
             !(clkdm->flags & CLKDM_MISSING_IDLE_REPORTING))
                 clkdm_allow_idle(clkdm);
         else if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP &&
-                 atomic_read(&clkdm->usecount) == 0)
+                 clkdm->usecount == 0)
                 clkdm_sleep(clkdm);
         return 0;
 }
 
 /*
- * This sets pwrdm state (other than mpu & core. Currently only ON &
- * RET are supported.
- */
-int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 pwrst)
-{
-        u8 curr_pwrst, next_pwrst;
-        int sleep_switch = -1, ret = 0, hwsup = 0;
-
-        if (!pwrdm || IS_ERR(pwrdm))
-                return -EINVAL;
-
-        while (!(pwrdm->pwrsts & (1 << pwrst))) {
-                if (pwrst == PWRDM_POWER_OFF)
-                        return ret;
-                pwrst--;
-        }
-
-        next_pwrst = pwrdm_read_next_pwrst(pwrdm);
-        if (next_pwrst == pwrst)
-                return ret;
-
-        curr_pwrst = pwrdm_read_pwrst(pwrdm);
-        if (curr_pwrst < PWRDM_POWER_ON) {
-                if ((curr_pwrst > pwrst) &&
-                        (pwrdm->flags & PWRDM_HAS_LOWPOWERSTATECHANGE)) {
-                        sleep_switch = LOWPOWERSTATE_SWITCH;
-                } else {
-                        hwsup = clkdm_in_hwsup(pwrdm->pwrdm_clkdms[0]);
-                        clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
-                        sleep_switch = FORCEWAKEUP_SWITCH;
-                }
-        }
-
-        ret = pwrdm_set_next_pwrst(pwrdm, pwrst);
-        if (ret)
-                pr_err("%s: unable to set power state of powerdomain: %s\n",
-                       __func__, pwrdm->name);
-
-        switch (sleep_switch) {
-        case FORCEWAKEUP_SWITCH:
-                if (hwsup)
-                        clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
-                else
-                        clkdm_sleep(pwrdm->pwrdm_clkdms[0]);
-                break;
-        case LOWPOWERSTATE_SWITCH:
-                pwrdm_set_lowpwrstchange(pwrdm);
-                pwrdm_wait_transition(pwrdm);
-                pwrdm_state_switch(pwrdm);
-                break;
-        }
-
-        return ret;
-}
-
-
-
-/*
  * This API is to be called during init to set the various voltage
  * domains to the voltage as per the opp table. Typically we boot up
  * at the nominal voltage. So this function finds out the rate of