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| author | Rajendra Nayak <rnayak@ti.com> | 2011-07-10 05:56:54 -0600 |
|---|---|---|
| committer | Paul Walmsley <paul@pwsan.com> | 2011-07-10 05:56:54 -0600 |
| commit | b86cfb52a145d8ddad66b98c39c6764f3883cd5a (patch) | |
| tree | 1f3a173277058c22673505338af6a3675fc32c93 /arch/arm/mach-omap2 | |
| parent | 32a363c0f5b44cb4e9adfe238dfc4efa9270f7ae (diff) | |
| download | linux-stable-b86cfb52a145d8ddad66b98c39c6764f3883cd5a.tar.gz linux-stable-b86cfb52a145d8ddad66b98c39c6764f3883cd5a.tar.bz2 linux-stable-b86cfb52a145d8ddad66b98c39c6764f3883cd5a.zip | |
OMAP2+: PM: idle clkdms only if already in idle
The omap_set_pwrdm_state function forces clockdomains
to idle, without checking the existing idle state
programmed, instead based solely on the HW capability
of the clockdomain to support idle.
This is wrong and the clockdomains should be idled
post a state_switch *only* if idle transitions on the
clockdomain were already enabled.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | arch/arm/mach-omap2/pm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c index d48813fd62de..3feb35911a32 100644 --- a/arch/arm/mach-omap2/pm.c +++ b/arch/arm/mach-omap2/pm.c @@ -108,6 +108,7 @@ int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state) u32 cur_state; int sleep_switch = -1; int ret = 0; + int hwsup = 0; if (pwrdm == NULL || IS_ERR(pwrdm)) return -EINVAL; @@ -127,6 +128,7 @@ int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state) (pwrdm->flags & PWRDM_HAS_LOWPOWERSTATECHANGE)) { sleep_switch = LOWPOWERSTATE_SWITCH; } else { + hwsup = clkdm_in_hwsup(pwrdm->pwrdm_clkdms[0]); clkdm_wakeup(pwrdm->pwrdm_clkdms[0]); pwrdm_wait_transition(pwrdm); sleep_switch = FORCEWAKEUP_SWITCH; @@ -142,7 +144,7 @@ int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state) switch (sleep_switch) { case FORCEWAKEUP_SWITCH: - if (pwrdm->pwrdm_clkdms[0]->flags & CLKDM_CAN_ENABLE_AUTO) + if (hwsup) clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]); else clkdm_sleep(pwrdm->pwrdm_clkdms[0]); |