Merge tag 'omap-for-v3.8/pm-part2-v3-signed' of git://git.kernel.org/…

…pub/scm/linux/kernel/git/tmlind/linux-omap into next/pm

From Tony Lindgren <tony@atomide.com>:
PM changes via Kevin Hilman <khilman@deeprootsystems.com>:

Add support for full-chip retention in suspend for OMAP4 SoCs

* tag 'omap-for-v3.8/pm-part2-v3-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: voltage: fixup oscillator handling when CONFIG_PM=n
  ARM: OMAP4: USB: power down MUSB PHY during boot
  ARM: OMAP4: suspend: Program all domains to retention

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-omap2/omap_phy_internal.c

@@ -33,6 +33,38 @@
 #include "soc.h"
 #include "control.h"
 
+#define CONTROL_DEV_CONF		0x300
+#define PHY_PD				0x1
+
+/**
+ * omap4430_phy_power_down: disable MUSB PHY during early init
+ *
+ * OMAP4 MUSB PHY module is enabled by default on reset, but this will
+ * prevent core retention if not disabled by SW. USB driver will
+ * later on enable this, once and if the driver needs it.
+ */
+static int __init omap4430_phy_power_down(void)
+{
+	void __iomem *ctrl_base;
+
+	if (!cpu_is_omap44xx())
+		return 0;
+
+	ctrl_base = ioremap(OMAP443X_SCM_BASE, SZ_1K);
+	if (!ctrl_base) {
+		pr_err("control module ioremap failed\n");
+		return -ENOMEM;
+	}
+
+	/* Power down the phy */
+	__raw_writel(PHY_PD, ctrl_base + CONTROL_DEV_CONF);
+
+	iounmap(ctrl_base);
+
+	return 0;
+}
+early_initcall(omap4430_phy_power_down);
+
 void am35x_musb_reset(void)
 {
 	u32	regval;

arch/arm/mach-omap2/pm.c

@@ -39,6 +39,7 @@ static struct omap_device_pm_latency *pm_lats;
  */
 int (*omap_pm_suspend)(void);
 
+#ifdef CONFIG_PM
 /**
  * struct omap2_oscillator - Describe the board main oscillator latencies
  * @startup_time: oscillator startup latency
@@ -68,6 +69,7 @@ void omap_pm_get_oscillator(u32 *tstart, u32 *tshut)
 	*tstart = oscillator.startup_time;
 	*tshut = oscillator.shutdown_time;
 }
+#endif
 
 static int __init _init_omap_device(char *name)
 {

arch/arm/mach-omap2/pm.h

@@ -135,7 +135,7 @@ extern void omap_pm_get_oscillator(u32 *tstart, u32 *tshut);
 extern void omap_pm_setup_sr_i2c_pcb_length(u32 mm);
 #else
 static inline void omap_pm_setup_oscillator(u32 tstart, u32 tshut) { }
-static inline void omap_pm_get_oscillator(u32 *tstart, u32 *tshut) { }
+static inline void omap_pm_get_oscillator(u32 *tstart, u32 *tshut) { *tstart = *tshut = 0; }
 static inline void omap_pm_setup_sr_i2c_pcb_length(u32 mm) { }
 #endif
 

arch/arm/mach-omap2/pm44xx.c

@@ -100,13 +100,6 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
 	if (!strncmp(pwrdm->name, "cpu", 3))
 		return 0;
 
-	/*
-	 * FIXME: Remove this check when core retention is supported
-	 * Only MPUSS power domain is added in the list.
-	 */
-	if (strcmp(pwrdm->name, "mpu_pwrdm"))
-		return 0;
-
 	pwrst = kmalloc(sizeof(struct power_state), GFP_ATOMIC);
 	if (!pwrst)
 		return -ENOMEM;

arch/arm/mach-omap2/vc.c

@@ -666,6 +666,7 @@ static u8 omap_vc_calc_vsel(struct voltagedomain *voltdm, u32 uvolt)
 	return voltdm->pmic->uv_to_vsel(uvolt);
 }
 
+#ifdef CONFIG_PM
 /**
  * omap_pm_setup_sr_i2c_pcb_length - set length of SR I2C traces on PCB
  * @mm: length of the PCB trace in millimetres
@@ -678,6 +679,7 @@ void __init omap_pm_setup_sr_i2c_pcb_length(u32 mm)
 {
 	sr_i2c_pcb_length = mm;
 }
+#endif
 
 void __init omap_vc_init_channel(struct voltagedomain *voltdm)
 {