linux-kernel - Re: [PATCH v2 02/15] powerpc/85xx: add sleep and deep sleep support

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Message-ID: <20130428102042.GB27100@localhost.localdomain>
Date:	Sun, 28 Apr 2013 18:20:42 +0800
From:	Zhao Chenhui <chenhui.zhao@...escale.com>
To:	Scott Wood <scottwood@...escale.com>
CC:	<linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
	<r58472@...escale.com>
Subject: Re: [PATCH v2 02/15] powerpc/85xx: add sleep and deep sleep support

On Tue, Apr 23, 2013 at 06:53:20PM -0500, Scott Wood wrote:
> On 04/19/2013 05:47:35 AM, Zhao Chenhui wrote:
> > static int pmc_suspend_enter(suspend_state_t state)
> > {
> >-	int ret;
> >+	int ret = 0;
> >+
> >+	switch (state) {
> >+#ifdef CONFIG_PPC_85xx
> >+	case PM_SUSPEND_MEM:
> >+#ifdef CONFIG_SPE
> >+		enable_kernel_spe();
> >+#endif
> >+		enable_kernel_fp();
> 
> Why does enable_kernel_spe() need an ifdef but enable_kernel_fp()
> doesn't?
> 

will enclose it with CONFIG_PPC_FPU.

> >+	case PM_SUSPEND_STANDBY:
> >+#ifdef CONFIG_FSL_SOC_BOOKE
> >+		flush_dcache_L1();
> >+#endif
> >+		setbits32(&pmc_regs->powmgtcsr, POWMGTCSR_SLP);
> 
> Only L1, even on e500mc?
> 
> -Scott

This patch is just for chips with pmc unit. They have no e500mc core.

-Chenhui

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