Merge branch 'renesas-r8a7740' into renesas-armadillo

* renesas-r8a7740:
  ARM: shmobile: r8a7740: add A4LC pm domain support
  ARM: shmobile: r8a7740: add A3SP pm domain support
  ARM: shmobile: r8a7740: add A4S pm domain support
  ARM: shmobile: r8a7740: fixup: MSEL1CR 7bit control
  ARM: shmobile: soc-core: add R-mobile PM domain common APIs
  ARM: mach-shmobile: Convert sh_clk_mstp32_register to sh_clk_mstp_register

13 files changed, 305 insertions, 8 deletions

diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index 8aa1962c22a..0df5ae6740c 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -39,7 +39,9 @@ obj-$(CONFIG_ARCH_R8A7740)	+= entry-intc.o
 # PM objects
 obj-$(CONFIG_SUSPEND)		+= suspend.o
 obj-$(CONFIG_CPU_IDLE)		+= cpuidle.o
+obj-$(CONFIG_ARCH_SHMOBILE)	+= pm-rmobile.o
 obj-$(CONFIG_ARCH_SH7372)	+= pm-sh7372.o sleep-sh7372.o
+obj-$(CONFIG_ARCH_R8A7740)	+= pm-r8a7740.o
 obj-$(CONFIG_ARCH_R8A7779)	+= pm-r8a7779.o
 
 # Board objects
diff --git a/arch/arm/mach-shmobile/clock-r8a7740.c b/arch/arm/mach-shmobile/clock-r8a7740.c
index daf3eace5dc..ad5fccc7b5e 100644
--- a/arch/arm/mach-shmobile/clock-r8a7740.c
+++ b/arch/arm/mach-shmobile/clock-r8a7740.c
@@ -636,7 +636,7 @@ void __init r8a7740_clock_init(u8 md_ck)
 						    DIV6_REPARENT_NR);
 
 	if (!ret)
-		ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
+		ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
 
 	for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++)
 		ret = clk_register(late_main_clks[k]);
diff --git a/arch/arm/mach-shmobile/clock-r8a7779.c b/arch/arm/mach-shmobile/clock-r8a7779.c
index 7d6e9fe47b5..339c62c824d 100644
--- a/arch/arm/mach-shmobile/clock-r8a7779.c
+++ b/arch/arm/mach-shmobile/clock-r8a7779.c
@@ -162,7 +162,7 @@ void __init r8a7779_clock_init(void)
 		ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);
 
 	if (!ret)
-		ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
+		ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
 
 	for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++)
 		ret = clk_register(late_main_clks[k]);
diff --git a/arch/arm/mach-shmobile/clock-sh7367.c b/arch/arm/mach-shmobile/clock-sh7367.c
index 006e7b5d304..162b791b898 100644
--- a/arch/arm/mach-shmobile/clock-sh7367.c
+++ b/arch/arm/mach-shmobile/clock-sh7367.c
@@ -344,7 +344,7 @@ void __init sh7367_clock_init(void)
 		ret = sh_clk_div6_register(div6_clks, DIV6_NR);
 
 	if (!ret)
-		ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
+		ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
 
 	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
 
diff --git a/arch/arm/mach-shmobile/clock-sh7372.c b/arch/arm/mach-shmobile/clock-sh7372.c
index 94d1f88246d..5a2894b1c96 100644
--- a/arch/arm/mach-shmobile/clock-sh7372.c
+++ b/arch/arm/mach-shmobile/clock-sh7372.c
@@ -704,7 +704,7 @@ void __init sh7372_clock_init(void)
 		ret = sh_clk_div6_reparent_register(div6_reparent_clks, DIV6_REPARENT_NR);
 
 	if (!ret)
-		ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
+		ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
 
 	for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++)
 		ret = clk_register(late_main_clks[k]);
diff --git a/arch/arm/mach-shmobile/clock-sh7377.c b/arch/arm/mach-shmobile/clock-sh7377.c
index 0798a15936c..85f2a3ec2c4 100644
--- a/arch/arm/mach-shmobile/clock-sh7377.c
+++ b/arch/arm/mach-shmobile/clock-sh7377.c
@@ -355,7 +355,7 @@ void __init sh7377_clock_init(void)
 		ret = sh_clk_div6_register(div6_clks, DIV6_NR);
 
 	if (!ret)
-		ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
+		ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
 
 	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
 
diff --git a/arch/arm/mach-shmobile/clock-sh73a0.c b/arch/arm/mach-shmobile/clock-sh73a0.c
index 3946c4ba2aa..948bb3435f7 100644
--- a/arch/arm/mach-shmobile/clock-sh73a0.c
+++ b/arch/arm/mach-shmobile/clock-sh73a0.c
@@ -612,7 +612,7 @@ void __init sh73a0_clock_init(void)
 		ret = sh_clk_div6_reparent_register(div6_clks, DIV6_NR);
 
 	if (!ret)
-		ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
+		ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
 
 	for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++)
 		ret = clk_register(late_main_clks[k]);
diff --git a/arch/arm/mach-shmobile/include/mach/pm-rmobile.h b/arch/arm/mach-shmobile/include/mach/pm-rmobile.h
new file mode 100644
index 00000000000..5a402840fe2
--- /dev/null
+++ b/arch/arm/mach-shmobile/include/mach/pm-rmobile.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2012 Renesas Solutions Corp.
+ *
+ * Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef PM_RMOBILE_H
+#define PM_RMOBILE_H
+
+#include <linux/pm_domain.h>
+
+struct platform_device;
+
+struct rmobile_pm_domain {
+	struct generic_pm_domain genpd;
+	struct dev_power_governor *gov;
+	int (*suspend)(void);
+	void (*resume)(void);
+	unsigned int bit_shift;
+	bool no_debug;
+};
+
+static inline
+struct rmobile_pm_domain *to_rmobile_pd(struct generic_pm_domain *d)
+{
+	return container_of(d, struct rmobile_pm_domain, genpd);
+}
+
+#ifdef CONFIG_PM
+extern void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd);
+extern void rmobile_add_device_to_domain(struct rmobile_pm_domain *rmobile_pd,
+					struct platform_device *pdev);
+extern void rmobile_pm_add_subdomain(struct rmobile_pm_domain *rmobile_pd,
+				    struct rmobile_pm_domain *rmobile_sd);
+#else
+#define rmobile_init_pm_domain(pd) do { } while (0)
+#define rmobile_add_device_to_domain(pd, pdev) do { } while (0)
+#define rmobile_pm_add_subdomain(pd, sd) do { } while (0)
+#endif /* CONFIG_PM */
+
+#endif /* PM_RMOBILE_H */
diff --git a/arch/arm/mach-shmobile/include/mach/r8a7740.h b/arch/arm/mach-shmobile/include/mach/r8a7740.h
index 8bd7b9c136a..7143147780d 100644
--- a/arch/arm/mach-shmobile/include/mach/r8a7740.h
+++ b/arch/arm/mach-shmobile/include/mach/r8a7740.h
@@ -19,6 +19,8 @@
 #ifndef __ASM_R8A7740_H__
 #define __ASM_R8A7740_H__
 
+#include <mach/pm-rmobile.h>
+
 /*
  * MD_CKx pin
  */
@@ -604,4 +606,10 @@ enum {
 	SHDMA_SLAVE_USBHS_RX,
 };
 
+#ifdef CONFIG_PM
+extern struct rmobile_pm_domain r8a7740_pd_a4s;
+extern struct rmobile_pm_domain r8a7740_pd_a3sp;
+extern struct rmobile_pm_domain r8a7740_pd_a4lc;
+#endif /* CONFIG_PM */
+
 #endif /* __ASM_R8A7740_H__ */
diff --git a/arch/arm/mach-shmobile/pfc-r8a7740.c b/arch/arm/mach-shmobile/pfc-r8a7740.c
index 03def0fd7a0..ce9e7fa5cc8 100644
--- a/arch/arm/mach-shmobile/pfc-r8a7740.c
+++ b/arch/arm/mach-shmobile/pfc-r8a7740.c
@@ -1261,7 +1261,7 @@ static pinmux_enum_t pinmux_data[] = {
 	PINMUX_DATA(A21_MARK,			PORT120_FN1),
 	PINMUX_DATA(MSIOF0_RSYNC_MARK,		PORT120_FN2),
 	PINMUX_DATA(MSIOF1_TSYNC_PORT120_MARK,	PORT120_FN3,	MSEL4CR_10_0),
-	PINMUX_DATA(IRQ7_PORT120_MARK,		PORT120_FN0,	MSEL1CR_7_0),
+	PINMUX_DATA(IRQ7_PORT120_MARK,		PORT120_FN0,	MSEL1CR_7_1),
 
 	/* Port121 */
 	PINMUX_DATA(A20_MARK,			PORT121_FN1),
@@ -1623,7 +1623,7 @@ static pinmux_enum_t pinmux_data[] = {
 
 	/* Port209 */
 	PINMUX_DATA(VBUS_MARK,			PORT209_FN1),
-	PINMUX_DATA(IRQ7_PORT209_MARK,		PORT209_FN0,	MSEL1CR_7_1),
+	PINMUX_DATA(IRQ7_PORT209_MARK,		PORT209_FN0,	MSEL1CR_7_0),
 
 	/* Port210 */
 	PINMUX_DATA(IRQ9_PORT210_MARK,		PORT210_FN0,	MSEL1CR_9_1),
diff --git a/arch/arm/mach-shmobile/pm-r8a7740.c b/arch/arm/mach-shmobile/pm-r8a7740.c
new file mode 100644
index 00000000000..893504d012a
--- /dev/null
+++ b/arch/arm/mach-shmobile/pm-r8a7740.c
@@ -0,0 +1,54 @@
+/*
+ * r8a7740 power management support
+ *
+ * Copyright (C) 2012  Renesas Solutions Corp.
+ * Copyright (C) 2012  Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/console.h>
+#include <mach/pm-rmobile.h>
+
+#ifdef CONFIG_PM
+static int r8a7740_pd_a4s_suspend(void)
+{
+	/*
+	 * The A4S domain contains the CPU core and therefore it should
+	 * only be turned off if the CPU is in use.
+	 */
+	return -EBUSY;
+}
+
+struct rmobile_pm_domain r8a7740_pd_a4s = {
+	.genpd.name	= "A4S",
+	.bit_shift	= 10,
+	.gov		= &pm_domain_always_on_gov,
+	.no_debug	= true,
+	.suspend	= r8a7740_pd_a4s_suspend,
+};
+
+static int r8a7740_pd_a3sp_suspend(void)
+{
+	/*
+	 * Serial consoles make use of SCIF hardware located in A3SP,
+	 * keep such power domain on if "no_console_suspend" is set.
+	 */
+	return console_suspend_enabled ? 0 : -EBUSY;
+}
+
+struct rmobile_pm_domain r8a7740_pd_a3sp = {
+	.genpd.name	= "A3SP",
+	.bit_shift	= 11,
+	.gov		= &pm_domain_always_on_gov,
+	.no_debug	= true,
+	.suspend	= r8a7740_pd_a3sp_suspend,
+};
+
+struct rmobile_pm_domain r8a7740_pd_a4lc = {
+	.genpd.name	= "A4LC",
+	.bit_shift	= 1,
+};
+
+#endif /* CONFIG_PM */
diff --git a/arch/arm/mach-shmobile/pm-rmobile.c b/arch/arm/mach-shmobile/pm-rmobile.c
new file mode 100644
index 00000000000..a8562540f1d
--- /dev/null
+++ b/arch/arm/mach-shmobile/pm-rmobile.c
@@ -0,0 +1,167 @@
+/*
+ * rmobile power management support
+ *
+ * Copyright (C) 2012  Renesas Solutions Corp.
+ * Copyright (C) 2012  Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * based on pm-sh7372.c
+ *  Copyright (C) 2011 Magnus Damm
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/pm_clock.h>
+#include <asm/io.h>
+#include <mach/pm-rmobile.h>
+
+/* SYSC */
+#define SPDCR		0xe6180008
+#define SWUCR		0xe6180014
+#define PSTR		0xe6180080
+
+#define PSTR_RETRIES	100
+#define PSTR_DELAY_US	10
+
+#ifdef CONFIG_PM
+static int rmobile_pd_power_down(struct generic_pm_domain *genpd)
+{
+	struct rmobile_pm_domain *rmobile_pd = to_rmobile_pd(genpd);
+	unsigned int mask = 1 << rmobile_pd->bit_shift;
+
+	if (rmobile_pd->suspend) {
+		int ret = rmobile_pd->suspend();
+
+		if (ret)
+			return ret;
+	}
+
+	if (__raw_readl(PSTR) & mask) {
+		unsigned int retry_count;
+		__raw_writel(mask, SPDCR);
+
+		for (retry_count = PSTR_RETRIES; retry_count; retry_count--) {
+			if (!(__raw_readl(SPDCR) & mask))
+				break;
+			cpu_relax();
+		}
+	}
+
+	if (!rmobile_pd->no_debug)
+		pr_debug("%s: Power off, 0x%08x -> PSTR = 0x%08x\n",
+			 genpd->name, mask, __raw_readl(PSTR));
+
+	return 0;
+}
+
+static int __rmobile_pd_power_up(struct rmobile_pm_domain *rmobile_pd,
+				 bool do_resume)
+{
+	unsigned int mask = 1 << rmobile_pd->bit_shift;
+	unsigned int retry_count;
+	int ret = 0;
+
+	if (__raw_readl(PSTR) & mask)
+		goto out;
+
+	__raw_writel(mask, SWUCR);
+
+	for (retry_count = 2 * PSTR_RETRIES; retry_count; retry_count--) {
+		if (!(__raw_readl(SWUCR) & mask))
+			break;
+		if (retry_count > PSTR_RETRIES)
+			udelay(PSTR_DELAY_US);
+		else
+			cpu_relax();
+	}
+	if (!retry_count)
+		ret = -EIO;
+
+	if (!rmobile_pd->no_debug)
+		pr_debug("%s: Power on, 0x%08x -> PSTR = 0x%08x\n",
+			 rmobile_pd->genpd.name, mask, __raw_readl(PSTR));
+
+out:
+	if (ret == 0 && rmobile_pd->resume && do_resume)
+		rmobile_pd->resume();
+
+	return ret;
+}
+
+static int rmobile_pd_power_up(struct generic_pm_domain *genpd)
+{
+	return __rmobile_pd_power_up(to_rmobile_pd(genpd), true);
+}
+
+static bool rmobile_pd_active_wakeup(struct device *dev)
+{
+	bool (*active_wakeup)(struct device *dev);
+
+	active_wakeup = dev_gpd_data(dev)->ops.active_wakeup;
+	return active_wakeup ? active_wakeup(dev) : true;
+}
+
+static int rmobile_pd_stop_dev(struct device *dev)
+{
+	int (*stop)(struct device *dev);
+
+	stop = dev_gpd_data(dev)->ops.stop;
+	if (stop) {
+		int ret = stop(dev);
+		if (ret)
+			return ret;
+	}
+	return pm_clk_suspend(dev);
+}
+
+static int rmobile_pd_start_dev(struct device *dev)
+{
+	int (*start)(struct device *dev);
+	int ret;
+
+	ret = pm_clk_resume(dev);
+	if (ret)
+		return ret;
+
+	start = dev_gpd_data(dev)->ops.start;
+	if (start)
+		ret = start(dev);
+
+	return ret;
+}
+
+void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd)
+{
+	struct generic_pm_domain *genpd = &rmobile_pd->genpd;
+	struct dev_power_governor *gov = rmobile_pd->gov;
+
+	pm_genpd_init(genpd, gov ? : &simple_qos_governor, false);
+	genpd->dev_ops.stop		= rmobile_pd_stop_dev;
+	genpd->dev_ops.start		= rmobile_pd_start_dev;
+	genpd->dev_ops.active_wakeup	= rmobile_pd_active_wakeup;
+	genpd->dev_irq_safe		= true;
+	genpd->power_off		= rmobile_pd_power_down;
+	genpd->power_on			= rmobile_pd_power_up;
+	__rmobile_pd_power_up(rmobile_pd, false);
+}
+
+void rmobile_add_device_to_domain(struct rmobile_pm_domain *rmobile_pd,
+				 struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+
+	pm_genpd_add_device(&rmobile_pd->genpd, dev);
+	if (pm_clk_no_clocks(dev))
+		pm_clk_add(dev, NULL);
+}
+
+void rmobile_pm_add_subdomain(struct rmobile_pm_domain *rmobile_pd,
+			     struct rmobile_pm_domain *rmobile_sd)
+{
+	pm_genpd_add_subdomain(&rmobile_pd->genpd, &rmobile_sd->genpd);
+}
+#endif /* CONFIG_PM */
diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c
index 48d7bbf0d2e..c006d8ddbbe 100644
--- a/arch/arm/mach-shmobile/setup-r8a7740.c
+++ b/arch/arm/mach-shmobile/setup-r8a7740.c
@@ -29,6 +29,7 @@
 #include <linux/dma-mapping.h>
 #include <mach/dma-register.h>
 #include <mach/r8a7740.h>
+#include <mach/pm-rmobile.h>
 #include <mach/common.h>
 #include <mach/irqs.h>
 #include <asm/mach-types.h>
@@ -671,10 +672,31 @@ void __init r8a7740_add_standard_devices(void)
 	r8a7740_i2c_workaround(&i2c0_device);
 	r8a7740_i2c_workaround(&i2c1_device);
 
+	/* PM domain */
+	rmobile_init_pm_domain(&r8a7740_pd_a4s);
+	rmobile_init_pm_domain(&r8a7740_pd_a3sp);
+	rmobile_init_pm_domain(&r8a7740_pd_a4lc);
+
+	rmobile_pm_add_subdomain(&r8a7740_pd_a4s, &r8a7740_pd_a3sp);
+
+	/* add devices */
 	platform_add_devices(r8a7740_early_devices,
 			    ARRAY_SIZE(r8a7740_early_devices));
 	platform_add_devices(r8a7740_late_devices,
 			     ARRAY_SIZE(r8a7740_late_devices));
+
+	/* add devices to PM domain  */
+
+	rmobile_add_device_to_domain(&r8a7740_pd_a3sp,	&scif0_device);
+	rmobile_add_device_to_domain(&r8a7740_pd_a3sp,	&scif1_device);
+	rmobile_add_device_to_domain(&r8a7740_pd_a3sp,	&scif2_device);
+	rmobile_add_device_to_domain(&r8a7740_pd_a3sp,	&scif3_device);
+	rmobile_add_device_to_domain(&r8a7740_pd_a3sp,	&scif4_device);
+	rmobile_add_device_to_domain(&r8a7740_pd_a3sp,	&scif5_device);
+	rmobile_add_device_to_domain(&r8a7740_pd_a3sp,	&scif6_device);
+	rmobile_add_device_to_domain(&r8a7740_pd_a3sp,	&scif7_device);
+	rmobile_add_device_to_domain(&r8a7740_pd_a3sp,	&scifb_device);
+	rmobile_add_device_to_domain(&r8a7740_pd_a3sp,	&i2c1_device);
 }
 
 static void __init r8a7740_earlytimer_init(void)