From mboxrd@z Thu Jan 1 00:00:00 1970 From: b-cousson@ti.com (Benoit Cousson) Date: Mon, 13 Dec 2010 22:49:25 +0100 Subject: [PATCH 1/5] OMAP4: PM: Use the lowpwrstatechange feature on OMAP4 In-Reply-To: <1292276969-29733-1-git-send-email-b-cousson@ti.com> References: <1292276969-29733-1-git-send-email-b-cousson@ti.com> Message-ID: <1292276969-29733-2-git-send-email-b-cousson@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Rajendra Nayak For pwrdm's which support lowperstatechange, do not try waking up the domain to put it back to deeper sleep state. Signed-off-by: Rajendra Nayak Signed-off-by: Santosh Shilimkar Acked-by: Benoit Cousson --- arch/arm/mach-omap2/pm.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c index cf1c4c9..dc68044 100644 --- a/arch/arm/mach-omap2/pm.c +++ b/arch/arm/mach-omap2/pm.c @@ -114,6 +114,14 @@ int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state) return ret; if (pwrdm_read_pwrst(pwrdm) < PWRDM_POWER_ON) { + if ((pwrdm_read_pwrst(pwrdm) > state) && + (pwrdm->flags & PWRDM_HAS_LOWPOWERSTATECHANGE)) { + ret = pwrdm_set_next_pwrst(pwrdm, state); + pwrdm_set_lowpwrstchange(pwrdm); + pwrdm_wait_transition(pwrdm); + pwrdm_state_switch(pwrdm); + return ret; + } omap2_clkdm_wakeup(pwrdm->pwrdm_clkdms[0]); sleep_switch = 1; pwrdm_wait_transition(pwrdm); -- 1.7.0.4