Merge tag 'for_3.8-pm-omap4-core-ret' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into omap-for-v3.8/pm-part2
Add support for full-chip retention in suspend for OMAP4 SoCs.
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@@ -33,6 +33,38 @@
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#include "soc.h"
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#include "control.h"
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#define CONTROL_DEV_CONF 0x300
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#define PHY_PD 0x1
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/**
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* omap4430_phy_power_down: disable MUSB PHY during early init
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*
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* OMAP4 MUSB PHY module is enabled by default on reset, but this will
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* prevent core retention if not disabled by SW. USB driver will
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* later on enable this, once and if the driver needs it.
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*/
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static int __init omap4430_phy_power_down(void)
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{
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void __iomem *ctrl_base;
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if (!cpu_is_omap44xx())
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return 0;
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ctrl_base = ioremap(OMAP443X_SCM_BASE, SZ_1K);
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if (!ctrl_base) {
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pr_err("control module ioremap failed\n");
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return -ENOMEM;
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}
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/* Power down the phy */
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__raw_writel(PHY_PD, ctrl_base + CONTROL_DEV_CONF);
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iounmap(ctrl_base);
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return 0;
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}
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early_initcall(omap4430_phy_power_down);
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void am35x_musb_reset(void)
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{
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u32 regval;
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@@ -100,13 +100,6 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
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if (!strncmp(pwrdm->name, "cpu", 3))
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return 0;
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/*
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* FIXME: Remove this check when core retention is supported
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* Only MPUSS power domain is added in the list.
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*/
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if (strcmp(pwrdm->name, "mpu_pwrdm"))
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return 0;
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pwrst = kmalloc(sizeof(struct power_state), GFP_ATOMIC);
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if (!pwrst)
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return -ENOMEM;
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