Merge tag 'rmobile-for-linus' of git://github.com/pmundt/linux-sh

SH/R-Mobile updates for 3.3 merge window.

* tag 'rmobile-for-linus' of git://github.com/pmundt/linux-sh: (32 commits)
  arm: mach-shmobile: add a resource name for shdma
  ARM: mach-shmobile: r8a7779 SMP support V3
  ARM: mach-shmobile: Add kota2 defconfig.
  ARM: mach-shmobile: Add marzen defconfig.
  ARM: mach-shmobile: r8a7779 power domain support V2
  ARM: mach-shmobile: Fix up marzen build for recent GIC changes.
  ARM: mach-shmobile: r8a7779 PFC function support
  ARM: mach-shmobile: Flush caches in platform_cpu_die()
  ARM: mach-shmobile: Allow SoC specific CPU kill code
  ARM: mach-shmobile: Fix headsmp.S code to use CPUINIT
  ARM: mach-shmobile: clock-r8a7779: clkz/clkzs support
  ARM: mach-shmobile: clock-r8a7779: add DIV4 clock support
  ARM: mach-shmobile: Marzen LAN89218 support
  ARM: mach-shmobile: Marzen SCIF2/SCIF4 support
  ARM: mach-shmobile: r8a7779 PFC GPIO-only support V2
  ARM: mach-shmobile: r8a7779 and Marzen base support V2
  sh: pfc: Unlock register support
  sh: pfc: Variable bitfield width config register support
  sh: pfc: Add config_reg_helper() function
  sh: pfc: Convert index to field and value pair
  ...

1 files changed, 249 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/pm-r8a7779.c b/arch/arm/mach-shmobile/pm-r8a7779.c
new file mode 100644
index 00000000000..c38ba7b43ef
--- /dev/null
+++ b/arch/arm/mach-shmobile/pm-r8a7779.c
@@ -0,0 +1,249 @@
+/*
+ * r8a7779 Power management support
+ *
+ * Copyright (C) 2011  Renesas Solutions Corp.
+ * 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/pm.h>
+#include <linux/suspend.h>
+#include <linux/err.h>
+#include <linux/pm_clock.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/console.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <mach/common.h>
+#include <mach/r8a7779.h>
+
+static void __iomem *r8a7779_sysc_base;
+
+/* SYSC */
+#define SYSCSR 0x00
+#define SYSCISR 0x04
+#define SYSCISCR 0x08
+#define SYSCIER 0x0c
+#define SYSCIMR 0x10
+#define PWRSR0 0x40
+#define PWRSR1 0x80
+#define PWRSR2 0xc0
+#define PWRSR3 0x100
+#define PWRSR4 0x140
+
+#define PWRSR_OFFS 0x00
+#define PWROFFCR_OFFS 0x04
+#define PWRONCR_OFFS 0x0c
+#define PWRER_OFFS 0x14
+
+#define SYSCSR_RETRIES 100
+#define SYSCSR_DELAY_US 1
+
+#define SYSCISR_RETRIES 1000
+#define SYSCISR_DELAY_US 1
+
+#if defined(CONFIG_PM) || defined(CONFIG_SMP)
+
+static DEFINE_SPINLOCK(r8a7779_sysc_lock); /* SMP CPUs + I/O devices */
+
+static int r8a7779_sysc_pwr_on_off(struct r8a7779_pm_ch *r8a7779_ch,
+				   int sr_bit, int reg_offs)
+{
+	int k;
+
+	for (k = 0; k < SYSCSR_RETRIES; k++) {
+		if (ioread32(r8a7779_sysc_base + SYSCSR) & (1 << sr_bit))
+			break;
+		udelay(SYSCSR_DELAY_US);
+	}
+
+	if (k == SYSCSR_RETRIES)
+		return -EAGAIN;
+
+	iowrite32(1 << r8a7779_ch->chan_bit,
+		  r8a7779_sysc_base + r8a7779_ch->chan_offs + reg_offs);
+
+	return 0;
+}
+
+static int r8a7779_sysc_pwr_off(struct r8a7779_pm_ch *r8a7779_ch)
+{
+	return r8a7779_sysc_pwr_on_off(r8a7779_ch, 0, PWROFFCR_OFFS);
+}
+
+static int r8a7779_sysc_pwr_on(struct r8a7779_pm_ch *r8a7779_ch)
+{
+	return r8a7779_sysc_pwr_on_off(r8a7779_ch, 1, PWRONCR_OFFS);
+}
+
+static int r8a7779_sysc_update(struct r8a7779_pm_ch *r8a7779_ch,
+			       int (*on_off_fn)(struct r8a7779_pm_ch *))
+{
+	unsigned int isr_mask = 1 << r8a7779_ch->isr_bit;
+	unsigned int chan_mask = 1 << r8a7779_ch->chan_bit;
+	unsigned int status;
+	unsigned long flags;
+	int ret = 0;
+	int k;
+
+	spin_lock_irqsave(&r8a7779_sysc_lock, flags);
+
+	iowrite32(isr_mask, r8a7779_sysc_base + SYSCISCR);
+
+	do {
+		ret = on_off_fn(r8a7779_ch);
+		if (ret)
+			goto out;
+
+		status = ioread32(r8a7779_sysc_base +
+				  r8a7779_ch->chan_offs + PWRER_OFFS);
+	} while (status & chan_mask);
+
+	for (k = 0; k < SYSCISR_RETRIES; k++) {
+		if (ioread32(r8a7779_sysc_base + SYSCISR) & isr_mask)
+			break;
+		udelay(SYSCISR_DELAY_US);
+	}
+
+	if (k == SYSCISR_RETRIES)
+		ret = -EIO;
+
+	iowrite32(isr_mask, r8a7779_sysc_base + SYSCISCR);
+
+ out:
+	spin_unlock_irqrestore(&r8a7779_sysc_lock, flags);
+
+	pr_debug("r8a7779 power domain %d: %02x %02x %02x %02x %02x -> %d\n",
+		 r8a7779_ch->isr_bit, ioread32(r8a7779_sysc_base + PWRSR0),
+		 ioread32(r8a7779_sysc_base + PWRSR1),
+		 ioread32(r8a7779_sysc_base + PWRSR2),
+		 ioread32(r8a7779_sysc_base + PWRSR3),
+		 ioread32(r8a7779_sysc_base + PWRSR4), ret);
+	return ret;
+}
+
+int r8a7779_sysc_power_down(struct r8a7779_pm_ch *r8a7779_ch)
+{
+	return r8a7779_sysc_update(r8a7779_ch, r8a7779_sysc_pwr_off);
+}
+
+int r8a7779_sysc_power_up(struct r8a7779_pm_ch *r8a7779_ch)
+{
+	return r8a7779_sysc_update(r8a7779_ch, r8a7779_sysc_pwr_on);
+}
+
+static void __init r8a7779_sysc_init(void)
+{
+	r8a7779_sysc_base = ioremap_nocache(0xffd85000, PAGE_SIZE);
+	if (!r8a7779_sysc_base)
+		panic("unable to ioremap r8a7779 SYSC hardware block\n");
+
+	/* enable all interrupt sources, but do not use interrupt handler */
+	iowrite32(0x0131000e, r8a7779_sysc_base + SYSCIER);
+	iowrite32(0, r8a7779_sysc_base + SYSCIMR);
+}
+
+#else /* CONFIG_PM || CONFIG_SMP */
+
+static inline void r8a7779_sysc_init(void) {}
+
+#endif /* CONFIG_PM || CONFIG_SMP */
+
+#ifdef CONFIG_PM
+
+static int pd_power_down(struct generic_pm_domain *genpd)
+{
+	return r8a7779_sysc_power_down(to_r8a7779_ch(genpd));
+}
+
+static int pd_power_up(struct generic_pm_domain *genpd)
+{
+	return r8a7779_sysc_power_up(to_r8a7779_ch(genpd));
+}
+
+static bool pd_is_off(struct generic_pm_domain *genpd)
+{
+	struct r8a7779_pm_ch *r8a7779_ch = to_r8a7779_ch(genpd);
+	unsigned int st;
+
+	st = ioread32(r8a7779_sysc_base + r8a7779_ch->chan_offs + PWRSR_OFFS);
+	if (st & (1 << r8a7779_ch->chan_bit))
+		return true;
+
+	return false;
+}
+
+static bool pd_active_wakeup(struct device *dev)
+{
+	return true;
+}
+
+void r8a7779_init_pm_domain(struct r8a7779_pm_domain *r8a7779_pd)
+{
+	struct generic_pm_domain *genpd = &r8a7779_pd->genpd;
+
+	pm_genpd_init(genpd, NULL, false);
+	genpd->dev_ops.stop = pm_clk_suspend;
+	genpd->dev_ops.start = pm_clk_resume;
+	genpd->dev_ops.active_wakeup = pd_active_wakeup;
+	genpd->dev_irq_safe = true;
+	genpd->power_off = pd_power_down;
+	genpd->power_on = pd_power_up;
+
+	if (pd_is_off(&r8a7779_pd->genpd))
+		pd_power_up(&r8a7779_pd->genpd);
+}
+
+void r8a7779_add_device_to_domain(struct r8a7779_pm_domain *r8a7779_pd,
+				 struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+
+	pm_genpd_add_device(&r8a7779_pd->genpd, dev);
+	if (pm_clk_no_clocks(dev))
+		pm_clk_add(dev, NULL);
+}
+
+struct r8a7779_pm_domain r8a7779_sh4a = {
+	.ch = {
+		.chan_offs = 0x80, /* PWRSR1 .. PWRER1 */
+		.isr_bit = 16, /* SH4A */
+	}
+};
+
+struct r8a7779_pm_domain r8a7779_sgx = {
+	.ch = {
+		.chan_offs = 0xc0, /* PWRSR2 .. PWRER2 */
+		.isr_bit = 20, /* SGX */
+	}
+};
+
+struct r8a7779_pm_domain r8a7779_vdp1 = {
+	.ch = {
+		.chan_offs = 0x100, /* PWRSR3 .. PWRER3 */
+		.isr_bit = 21, /* VDP */
+	}
+};
+
+struct r8a7779_pm_domain r8a7779_impx3 = {
+	.ch = {
+		.chan_offs = 0x140, /* PWRSR4 .. PWRER4 */
+		.isr_bit = 24, /* IMP */
+	}
+};
+
+#endif /* CONFIG_PM */
+
+void __init r8a7779_pm_init(void)
+{
+	static int once;
+
+	if (!once++)
+		r8a7779_sysc_init();
+}