Revert "h8300: clocksource"

diff --git a/Documentation/devicetree/bindings/timer/renesas,16bit-timer.txt b/Documentation/devicetree/bindings/timer/renesas,16bit-timer.txt
deleted file mode 100644
index e879244..0000000
--- a/Documentation/devicetree/bindings/timer/renesas,16bit-timer.txt
+++ /dev/null
@@ -1,25 +0,0 @@ 
-* Renesas H8/300 16bit timer
-
-The 16bit timer is a 16bit timer/counter with configurable clock inputs and
-programmable compare match.
-
-Required Properties:
-
-  - compatible: must contain "renesas,16bit-timer"
-  - reg: base address and length of the registers block for the timer module.
-  - interrupts: interrupt-specifier for the timer, IMIA
-  - clocks: a list of phandle, one for each entry in clock-names.
-  - clock-names: must contain "peripheral_clk" for the functional clock.
-  - renesas,channel: timer channel number.
-
-Example:
-
-	timer16: timer@ffff68 {
-		compatible = "reneas,16bit-timer";
-		reg = <0xffff68 8>, <0xffff60 8>;
-		interrupts = <24>;
-		renesas,channel = <0>;
-		clocks = <&pclk>;
-		clock-names = "peripheral_clk";
-	};
-
diff --git a/Documentation/devicetree/bindings/timer/renesas,8bit-timer.txt b/Documentation/devicetree/bindings/timer/renesas,8bit-timer.txt
deleted file mode 100644
index 9dca375..0000000
--- a/Documentation/devicetree/bindings/timer/renesas,8bit-timer.txt
+++ /dev/null
@@ -1,25 +0,0 @@ 
-* Renesas H8/300 8bit timer
-
-The 8bit timer is a 8bit timer/counter with configurable clock inputs and
-programmable compare match.
-
-This implement only supported cascade mode.
-
-Required Properties:
-
-  - compatible: must contain "renesas,8bit-timer"
-  - reg: base address and length of the registers block for the timer module.
-  - interrupts: interrupt-specifier for the timer, CMIA and TOVI
-  - clocks: a list of phandle, one for each entry in clock-names.
-  - clock-names: must contain "fck" for the functional clock.
-
-Example:
-
-	timer8_0: timer@ffff80 {
-		compatible = "renesas,8bit-timer";
-		reg = <0xffff80 10>;
-		interrupts = <36>;
-		clocks = <&fclk>;
-		clock-names = "fck";
-	};
-
diff --git a/Documentation/devicetree/bindings/timer/renesas,tpu.txt b/Documentation/devicetree/bindings/timer/renesas,tpu.txt
deleted file mode 100644
index f8b2589..0000000
--- a/Documentation/devicetree/bindings/timer/renesas,tpu.txt
+++ /dev/null
@@ -1,21 +0,0 @@ 
-* Renesas H8/300 Timer Pluse Unit
-
-The TPU is a 16bit timer/counter with configurable clock inputs and
-programmable compare match.
-This implementation support only cascade mode.
-
-Required Properties:
-
-  - compatible: must contain "renesas,tpu"
-  - reg: base address and length of the registers block in 2 channel.
-  - clocks: a list of phandle, one for each entry in clock-names.
-  - clock-names: must contain "peripheral_clk" for the functional clock.
-
-
-Example:
-	tpu: tpu@ffffe0 {
-		compatible = "renesas,tpu";
-		reg = <0xffffe0 16>, <0xfffff0 12>;
-		clocks = <&pclk>;
-		clock-names = "peripheral_clk";
-	};
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index 50b68bc..34e1cfa 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -290,12 +290,6 @@  config CLKSRC_PXA
 	  This enables OST0 support available on PXA and SA-11x0
 	  platforms.
 
-config H8300_TMR16
-        bool
-
-config H8300_TPU
-        bool
-
 config CLKSRC_IMX_GPT
 	bool "Clocksource using i.MX GPT" if COMPILE_TEST
 	depends on ARM && CLKDEV_LOOKUP
@@ -308,5 +302,4 @@  config CLKSRC_ST_LPC
 	help
 	  Enable this option to use the Low Power controller timer
 	  as clocksource.
-
 endmenu
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index fc9348d..89ba4f2 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -59,7 +59,4 @@  obj-$(CONFIG_CLKSRC_MIPS_GIC)		+= mips-gic-timer.o
 obj-$(CONFIG_CLKSRC_TANGO_XTAL)		+= tango_xtal.o
 obj-$(CONFIG_CLKSRC_IMX_GPT)		+= timer-imx-gpt.o
 obj-$(CONFIG_ASM9260_TIMER)		+= asm9260_timer.o
-obj-$(CONFIG_H8300)			+= h8300_timer8.o
-obj-$(CONFIG_H8300_TMR16)		+= h8300_timer16.o
-obj-$(CONFIG_H8300_TPU)			+= h8300_tpu.o
 obj-$(CONFIG_CLKSRC_ST_LPC)		+= clksrc_st_lpc.o
diff --git a/drivers/clocksource/h8300_timer16.c b/drivers/clocksource/h8300_timer16.c
deleted file mode 100644
index 0e076c6..0000000
--- a/drivers/clocksource/h8300_timer16.c
+++ /dev/null
@@ -1,253 +0,0 @@ 
-/*
- *  H8/300 16bit Timer driver
- *
- *  Copyright 2015 Yoshinori Sato <ysato@users.sourcefoge.jp>
- */
-
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/clocksource.h>
-#include <linux/module.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/of.h>
-
-#include <asm/segment.h>
-#include <asm/irq.h>
-
-#define TSTR	0
-#define TSNC	1
-#define TMDR	2
-#define TOLR	3
-#define TISRA	4
-#define TISRB	5
-#define TISRC	6
-
-#define TCR	0
-#define TIOR	1
-#define TCNT	2
-#define GRA	4
-#define GRB	6
-
-#define FLAG_REPROGRAM (1 << 0)
-#define FLAG_SKIPEVENT (1 << 1)
-#define FLAG_IRQCONTEXT (1 << 2)
-#define FLAG_STARTED (1 << 3)
-
-#define ONESHOT  0
-#define PERIODIC 1
-
-#define RELATIVE 0
-#define ABSOLUTE 1
-
-struct timer16_priv {
-	struct platform_device *pdev;
-	struct clocksource cs;
-	struct irqaction irqaction;
-	unsigned long total_cycles;
-	unsigned long mapbase;
-	unsigned long mapcommon;
-	unsigned long flags;
-	unsigned short gra;
-	unsigned short cs_enabled;
-	unsigned char enb;
-	unsigned char imfa;
-	unsigned char imiea;
-	unsigned char ovf;
-	raw_spinlock_t lock;
-	struct clk *clk;
-};
-
-static unsigned long timer16_get_counter(struct timer16_priv *p)
-{
-	unsigned long v1, v2, v3;
-	int o1, o2;
-
-	o1 = ctrl_inb(p->mapcommon + TISRC) & p->ovf;
-
-	/* Make sure the timer value is stable. Stolen from acpi_pm.c */
-	do {
-		o2 = o1;
-		v1 = ctrl_inw(p->mapbase + TCNT);
-		v2 = ctrl_inw(p->mapbase + TCNT);
-		v3 = ctrl_inw(p->mapbase + TCNT);
-		o1 = ctrl_inb(p->mapcommon + TISRC) & p->ovf;
-	} while (unlikely((o1 != o2) || (v1 > v2 && v1 < v3)
-			  || (v2 > v3 && v2 < v1) || (v3 > v1 && v3 < v2)));
-
-	v2 |= 0x10000;
-	return v2;
-}
-
-
-static irqreturn_t timer16_interrupt(int irq, void *dev_id)
-{
-	struct timer16_priv *p = (struct timer16_priv *)dev_id;
-
-	ctrl_outb(ctrl_inb(p->mapcommon + TISRA) & ~p->imfa,
-		  p->mapcommon + TISRA);
-	p->total_cycles += 0x10000;
-
-	return IRQ_HANDLED;
-}
-
-static inline struct timer16_priv *cs_to_priv(struct clocksource *cs)
-{
-	return container_of(cs, struct timer16_priv, cs);
-}
-
-static cycle_t timer16_clocksource_read(struct clocksource *cs)
-{
-	struct timer16_priv *p = cs_to_priv(cs);
-	unsigned long flags, raw;
-	unsigned long value;
-
-	raw_spin_lock_irqsave(&p->lock, flags);
-	value = p->total_cycles;
-	raw = timer16_get_counter(p);
-	raw_spin_unlock_irqrestore(&p->lock, flags);
-
-	return value + raw;
-}
-
-static int timer16_enable(struct clocksource *cs)
-{
-	struct timer16_priv *p = cs_to_priv(cs);
-
-	WARN_ON(p->cs_enabled);
-
-	p->total_cycles = 0;
-	ctrl_outw(0x0000, p->mapbase + TCNT);
-	ctrl_outb(0x83, p->mapbase + TCR);
-	ctrl_outb(ctrl_inb(p->mapcommon + TSTR) | p->enb,
-		  p->mapcommon + TSTR);
-
-	p->cs_enabled = true;
-	return 0;
-}
-
-static void timer16_disable(struct clocksource *cs)
-{
-	struct timer16_priv *p = cs_to_priv(cs);
-
-	WARN_ON(!p->cs_enabled);
-
-	ctrl_outb(ctrl_inb(p->mapcommon + TSTR) & ~p->enb,
-		  p->mapcommon + TSTR);
-
-	p->cs_enabled = false;
-}
-
-#define REG_CH   0
-#define REG_COMM 1
-
-static int timer16_setup(struct timer16_priv *p, struct platform_device *pdev)
-{
-	struct resource *res[2];
-	int ret, irq;
-	unsigned int ch;
-
-	p->pdev = pdev;
-
-	res[REG_CH] = platform_get_resource(p->pdev,
-					    IORESOURCE_MEM, REG_CH);
-	res[REG_COMM] = platform_get_resource(p->pdev,
-					      IORESOURCE_MEM, REG_COMM);
-	if (!res[REG_CH] || !res[REG_COMM]) {
-		dev_err(&p->pdev->dev, "failed to get I/O memory\n");
-		return -ENXIO;
-	}
-	irq = platform_get_irq(p->pdev, 0);
-	if (irq < 0) {
-		dev_err(&p->pdev->dev, "failed to get irq\n");
-		return irq;
-	}
-
-	p->clk = clk_get(&p->pdev->dev, "fck");
-	if (IS_ERR(p->clk)) {
-		dev_err(&p->pdev->dev, "can't get clk\n");
-		return PTR_ERR(p->clk);
-	}
-	of_property_read_u32(p->pdev->dev.of_node, "renesas,channel", &ch);
-
-	p->pdev = pdev;
-	p->mapbase = res[REG_CH]->start;
-	p->mapcommon = res[REG_COMM]->start;
-	p->enb = 1 << ch;
-	p->imfa = 1 << ch;
-	p->imiea = 1 << (4 + ch);
-	p->cs.name = pdev->name;
-	p->cs.rating = 200;
-	p->cs.read = timer16_clocksource_read;
-	p->cs.enable = timer16_enable;
-	p->cs.disable = timer16_disable;
-	p->cs.mask = CLOCKSOURCE_MASK(sizeof(unsigned long) * 8);
-	p->cs.flags = CLOCK_SOURCE_IS_CONTINUOUS;
-
-	ret = request_irq(irq, timer16_interrupt,
-			  IRQF_TIMER, pdev->name, p);
-	if (ret < 0) {
-		dev_err(&p->pdev->dev, "failed to request irq %d\n", irq);
-		return ret;
-	}
-
-	clocksource_register_hz(&p->cs, clk_get_rate(p->clk) / 8);
-
-	return 0;
-}
-
-static int timer16_probe(struct platform_device *pdev)
-{
-	struct timer16_priv *p = platform_get_drvdata(pdev);
-
-	if (p) {
-		dev_info(&pdev->dev, "kept as earlytimer\n");
-		return 0;
-	}
-
-	p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
-	if (!p)
-		return -ENOMEM;
-
-	return timer16_setup(p, pdev);
-}
-
-static int timer16_remove(struct platform_device *pdev)
-{
-	return -EBUSY;
-}
-
-static const struct of_device_id timer16_of_table[] = {
-	{ .compatible = "renesas,16bit-timer" },
-	{ }
-};
-static struct platform_driver timer16_driver = {
-	.probe		= timer16_probe,
-	.remove		= timer16_remove,
-	.driver		= {
-		.name	= "h8300h-16timer",
-		.of_match_table = of_match_ptr(timer16_of_table),
-	}
-};
-
-static int __init timer16_init(void)
-{
-	return platform_driver_register(&timer16_driver);
-}
-
-static void __exit timer16_exit(void)
-{
-	platform_driver_unregister(&timer16_driver);
-}
-
-subsys_initcall(timer16_init);
-module_exit(timer16_exit);
-MODULE_AUTHOR("Yoshinori Sato");
-MODULE_DESCRIPTION("H8/300H 16bit Timer Driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/clocksource/h8300_timer8.c b/drivers/clocksource/h8300_timer8.c
deleted file mode 100644
index 44375d8..0000000
--- a/drivers/clocksource/h8300_timer8.c
+++ /dev/null
@@ -1,317 +0,0 @@ 
-/*
- *  linux/arch/h8300/kernel/cpu/timer/timer8.c
- *
- *  Yoshinori Sato <ysato@users.sourcefoge.jp>
- *
- *  8bit Timer driver
- *
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/clockchips.h>
-#include <linux/module.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/of.h>
-
-#include <asm/irq.h>
-
-#define _8TCR	0
-#define _8TCSR	2
-#define TCORA	4
-#define TCORB	6
-#define _8TCNT	8
-
-#define FLAG_REPROGRAM (1 << 0)
-#define FLAG_SKIPEVENT (1 << 1)
-#define FLAG_IRQCONTEXT (1 << 2)
-#define FLAG_STARTED (1 << 3)
-
-#define ONESHOT  0
-#define PERIODIC 1
-
-#define RELATIVE 0
-#define ABSOLUTE 1
-
-struct timer8_priv {
-	struct platform_device *pdev;
-	struct clock_event_device ced;
-	struct irqaction irqaction;
-	unsigned long mapbase;
-	raw_spinlock_t lock;
-	unsigned long flags;
-	unsigned int rate;
-	unsigned int tcora;
-	struct clk *pclk;
-};
-
-static unsigned long timer8_get_counter(struct timer8_priv *p)
-{
-	unsigned long v1, v2, v3;
-	int o1, o2;
-
-	o1 = ctrl_inb(p->mapbase + _8TCSR) & 0x20;
-
-	/* Make sure the timer value is stable. Stolen from acpi_pm.c */
-	do {
-		o2 = o1;
-		v1 = ctrl_inw(p->mapbase + _8TCNT);
-		v2 = ctrl_inw(p->mapbase + _8TCNT);
-		v3 = ctrl_inw(p->mapbase + _8TCNT);
-		o1 = ctrl_inb(p->mapbase + _8TCSR) & 0x20;
-	} while (unlikely((o1 != o2) || (v1 > v2 && v1 < v3)
-			  || (v2 > v3 && v2 < v1) || (v3 > v1 && v3 < v2)));
-
-	v2 |= o1 << 10;
-	return v2;
-}
-
-static irqreturn_t timer8_interrupt(int irq, void *dev_id)
-{
-	struct timer8_priv *p = dev_id;
-
-	ctrl_outb(ctrl_inb(p->mapbase + _8TCSR) & ~0x40,
-		  p->mapbase + _8TCSR);
-	p->flags |= FLAG_IRQCONTEXT;
-	ctrl_outw(p->tcora, p->mapbase + TCORA);
-	if (!(p->flags & FLAG_SKIPEVENT)) {
-		if (clockevent_state_oneshot(&p->ced))
-			ctrl_outw(0x0000, p->mapbase + _8TCR);
-		p->ced.event_handler(&p->ced);
-	}
-	p->flags &= ~(FLAG_SKIPEVENT | FLAG_IRQCONTEXT);
-
-	return IRQ_HANDLED;
-}
-
-static void timer8_set_next(struct timer8_priv *p, unsigned long delta)
-{
-	unsigned long flags;
-	unsigned long now;
-
-	raw_spin_lock_irqsave(&p->lock, flags);
-	if (delta >= 0x10000)
-		dev_warn(&p->pdev->dev, "delta out of range\n");
-	now = timer8_get_counter(p);
-	p->tcora = delta;
-	ctrl_outb(ctrl_inb(p->mapbase + _8TCR) | 0x40, p->mapbase + _8TCR);
-	if (delta > now)
-		ctrl_outw(delta, p->mapbase + TCORA);
-	else
-		ctrl_outw(now + 1, p->mapbase + TCORA);
-
-	raw_spin_unlock_irqrestore(&p->lock, flags);
-}
-
-static int timer8_enable(struct timer8_priv *p)
-{
-	p->rate = clk_get_rate(p->pclk) / 64;
-	ctrl_outw(0xffff, p->mapbase + TCORA);
-	ctrl_outw(0x0000, p->mapbase + _8TCNT);
-	ctrl_outw(0x0c02, p->mapbase + _8TCR);
-
-	return 0;
-}
-
-static int timer8_start(struct timer8_priv *p)
-{
-	int ret = 0;
-	unsigned long flags;
-
-	raw_spin_lock_irqsave(&p->lock, flags);
-
-	if (!(p->flags & FLAG_STARTED))
-		ret = timer8_enable(p);
-
-	if (ret)
-		goto out;
-	p->flags |= FLAG_STARTED;
-
- out:
-	raw_spin_unlock_irqrestore(&p->lock, flags);
-
-	return ret;
-}
-
-static void timer8_stop(struct timer8_priv *p)
-{
-	unsigned long flags;
-
-	raw_spin_lock_irqsave(&p->lock, flags);
-
-	ctrl_outw(0x0000, p->mapbase + _8TCR);
-
-	raw_spin_unlock_irqrestore(&p->lock, flags);
-}
-
-static inline struct timer8_priv *ced_to_priv(struct clock_event_device *ced)
-{
-	return container_of(ced, struct timer8_priv, ced);
-}
-
-static void timer8_clock_event_start(struct timer8_priv *p, int periodic)
-{
-	struct clock_event_device *ced = &p->ced;
-
-	timer8_start(p);
-
-	ced->shift = 32;
-	ced->mult = div_sc(p->rate, NSEC_PER_SEC, ced->shift);
-	ced->max_delta_ns = clockevent_delta2ns(0xffff, ced);
-	ced->min_delta_ns = clockevent_delta2ns(0x0001, ced);
-
-	timer8_set_next(p, periodic?(p->rate + HZ/2) / HZ:0x10000);
-}
-
-static int timer8_clock_event_shutdown(struct clock_event_device *ced)
-{
-	timer8_stop(ced_to_priv(ced));
-	return 0;
-}
-
-static int timer8_clock_event_periodic(struct clock_event_device *ced)
-{
-	struct timer8_priv *p = ced_to_priv(ced);
-
-	dev_info(&p->pdev->dev, "used for periodic clock events\n");
-	timer8_stop(p);
-	timer8_clock_event_start(p, PERIODIC);
-
-	return 0;
-}
-
-static int timer8_clock_event_oneshot(struct clock_event_device *ced)
-{
-	struct timer8_priv *p = ced_to_priv(ced);
-
-	dev_info(&p->pdev->dev, "used for oneshot clock events\n");
-	timer8_stop(p);
-	timer8_clock_event_start(p, ONESHOT);
-
-	return 0;
-}
-
-static int timer8_clock_event_next(unsigned long delta,
-				   struct clock_event_device *ced)
-{
-	struct timer8_priv *p = ced_to_priv(ced);
-
-	BUG_ON(!clockevent_state_oneshot(ced));
-	timer8_set_next(p, delta - 1);
-
-	return 0;
-}
-
-static int timer8_setup(struct timer8_priv *p,
-			struct platform_device *pdev)
-{
-	struct resource *res;
-	int irq;
-	int ret;
-
-	p->pdev = pdev;
-
-	res = platform_get_resource(p->pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&p->pdev->dev, "failed to get I/O memory\n");
-		return -ENXIO;
-	}
-
-	irq = platform_get_irq(p->pdev, 0);
-	if (irq < 0) {
-		dev_err(&p->pdev->dev, "failed to get irq\n");
-		return -ENXIO;
-	}
-
-	p->mapbase = res->start;
-
-	p->irqaction.name = dev_name(&p->pdev->dev);
-	p->irqaction.handler = timer8_interrupt;
-	p->irqaction.dev_id = p;
-	p->irqaction.flags = IRQF_TIMER;
-
-	p->pclk = clk_get(&p->pdev->dev, "fck");
-	if (IS_ERR(p->pclk)) {
-		dev_err(&p->pdev->dev, "can't get clk\n");
-		return PTR_ERR(p->pclk);
-	}
-
-	p->ced.name = pdev->name;
-	p->ced.features = CLOCK_EVT_FEAT_PERIODIC |
-		CLOCK_EVT_FEAT_ONESHOT;
-	p->ced.rating = 200;
-	p->ced.cpumask = cpumask_of(0);
-	p->ced.set_next_event = timer8_clock_event_next;
-	p->ced.set_state_shutdown = timer8_clock_event_shutdown;
-	p->ced.set_state_periodic = timer8_clock_event_periodic;
-	p->ced.set_state_oneshot = timer8_clock_event_oneshot;
-
-	ret = setup_irq(irq, &p->irqaction);
-	if (ret < 0) {
-		dev_err(&p->pdev->dev,
-			"failed to request irq %d\n", irq);
-		return ret;
-	}
-	clockevents_register_device(&p->ced);
-	platform_set_drvdata(pdev, p);
-
-	return 0;
-}
-
-static int timer8_probe(struct platform_device *pdev)
-{
-	struct timer8_priv *p = platform_get_drvdata(pdev);
-
-	if (p) {
-		dev_info(&pdev->dev, "kept as earlytimer\n");
-		return 0;
-	}
-
-	p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
-	if (!p)
-		return -ENOMEM;
-
-	return timer8_setup(p, pdev);
-}
-
-static int timer8_remove(struct platform_device *pdev)
-{
-	return -EBUSY;
-}
-
-static const struct of_device_id timer8_of_table[] __maybe_unused = {
-	{ .compatible = "renesas,8bit-timer" },
-	{ }
-};
-
-MODULE_DEVICE_TABLE(of, timer8_of_table);
-static struct platform_driver timer8_driver = {
-	.probe		= timer8_probe,
-	.remove		= timer8_remove,
-	.driver		= {
-		.name	= "h8300-8timer",
-		.of_match_table = of_match_ptr(timer8_of_table),
-	}
-};
-
-static int __init timer8_init(void)
-{
-	return platform_driver_register(&timer8_driver);
-}
-
-static void __exit timer8_exit(void)
-{
-	platform_driver_unregister(&timer8_driver);
-}
-
-subsys_initcall(timer8_init);
-module_exit(timer8_exit);
-MODULE_AUTHOR("Yoshinori Sato");
-MODULE_DESCRIPTION("H8/300 8bit Timer Driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/clocksource/h8300_tpu.c b/drivers/clocksource/h8300_tpu.c
deleted file mode 100644
index 5487410..0000000
--- a/drivers/clocksource/h8300_tpu.c
+++ /dev/null
@@ -1,206 +0,0 @@ 
-/*
- *  H8/300 TPU Driver
- *
- *  Copyright 2015 Yoshinori Sato <ysato@users.sourcefoge.jp>
- *
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/clocksource.h>
-#include <linux/module.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/of.h>
-
-#include <asm/irq.h>
-
-#define TCR	0
-#define TMDR	1
-#define TIOR	2
-#define TER	4
-#define TSR	5
-#define TCNT	6
-#define TGRA	8
-#define TGRB	10
-#define TGRC	12
-#define TGRD	14
-
-struct tpu_priv {
-	struct platform_device *pdev;
-	struct clocksource cs;
-	struct clk *clk;
-	unsigned long mapbase1;
-	unsigned long mapbase2;
-	raw_spinlock_t lock;
-	unsigned int cs_enabled;
-};
-
-static inline unsigned long read_tcnt32(struct tpu_priv *p)
-{
-	unsigned long tcnt;
-
-	tcnt = ctrl_inw(p->mapbase1 + TCNT) << 16;
-	tcnt |= ctrl_inw(p->mapbase2 + TCNT);
-	return tcnt;
-}
-
-static int tpu_get_counter(struct tpu_priv *p, unsigned long long *val)
-{
-	unsigned long v1, v2, v3;
-	int o1, o2;
-
-	o1 = ctrl_inb(p->mapbase1 + TSR) & 0x10;
-
-	/* Make sure the timer value is stable. Stolen from acpi_pm.c */
-	do {
-		o2 = o1;
-		v1 = read_tcnt32(p);
-		v2 = read_tcnt32(p);
-		v3 = read_tcnt32(p);
-		o1 = ctrl_inb(p->mapbase1 + TSR) & 0x10;
-	} while (unlikely((o1 != o2) || (v1 > v2 && v1 < v3)
-			  || (v2 > v3 && v2 < v1) || (v3 > v1 && v3 < v2)));
-
-	*val = v2;
-	return o1;
-}
-
-static inline struct tpu_priv *cs_to_priv(struct clocksource *cs)
-{
-	return container_of(cs, struct tpu_priv, cs);
-}
-
-static cycle_t tpu_clocksource_read(struct clocksource *cs)
-{
-	struct tpu_priv *p = cs_to_priv(cs);
-	unsigned long flags;
-	unsigned long long value;
-
-	raw_spin_lock_irqsave(&p->lock, flags);
-	if (tpu_get_counter(p, &value))
-		value += 0x100000000;
-	raw_spin_unlock_irqrestore(&p->lock, flags);
-
-	return value;
-}
-
-static int tpu_clocksource_enable(struct clocksource *cs)
-{
-	struct tpu_priv *p = cs_to_priv(cs);
-
-	WARN_ON(p->cs_enabled);
-
-	ctrl_outw(0, p->mapbase1 + TCNT);
-	ctrl_outw(0, p->mapbase2 + TCNT);
-	ctrl_outb(0x0f, p->mapbase1 + TCR);
-	ctrl_outb(0x03, p->mapbase2 + TCR);
-
-	p->cs_enabled = true;
-	return 0;
-}
-
-static void tpu_clocksource_disable(struct clocksource *cs)
-{
-	struct tpu_priv *p = cs_to_priv(cs);
-
-	WARN_ON(!p->cs_enabled);
-
-	ctrl_outb(0, p->mapbase1 + TCR);
-	ctrl_outb(0, p->mapbase2 + TCR);
-	p->cs_enabled = false;
-}
-
-#define CH_L 0
-#define CH_H 1
-
-static int __init tpu_setup(struct tpu_priv *p, struct platform_device *pdev)
-{
-	struct resource *res[2];
-
-	p->pdev = pdev;
-
-	res[CH_L] = platform_get_resource(p->pdev, IORESOURCE_MEM, CH_L);
-	res[CH_H] = platform_get_resource(p->pdev, IORESOURCE_MEM, CH_H);
-	if (!res[CH_L] || !res[CH_H]) {
-		dev_err(&p->pdev->dev, "failed to get I/O memory\n");
-		return -ENXIO;
-	}
-
-	p->clk = clk_get(&p->pdev->dev, "fck");
-	if (IS_ERR(p->clk)) {
-		dev_err(&p->pdev->dev, "can't get clk\n");
-		return PTR_ERR(p->clk);
-	}
-
-	p->mapbase1 = res[CH_L]->start;
-	p->mapbase2 = res[CH_H]->start;
-
-	p->cs.name = pdev->name;
-	p->cs.rating = 200;
-	p->cs.read = tpu_clocksource_read;
-	p->cs.enable = tpu_clocksource_enable;
-	p->cs.disable = tpu_clocksource_disable;
-	p->cs.mask = CLOCKSOURCE_MASK(sizeof(unsigned long) * 8);
-	p->cs.flags = CLOCK_SOURCE_IS_CONTINUOUS;
-	clocksource_register_hz(&p->cs, clk_get_rate(p->clk) / 64);
-	platform_set_drvdata(pdev, p);
-
-	return 0;
-}
-
-static int tpu_probe(struct platform_device *pdev)
-{
-	struct tpu_priv *p = platform_get_drvdata(pdev);
-
-	if (p) {
-		dev_info(&pdev->dev, "kept as earlytimer\n");
-		return 0;
-	}
-
-	p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
-	if (!p)
-		return -ENOMEM;
-
-	return tpu_setup(p, pdev);
-}
-
-static int tpu_remove(struct platform_device *pdev)
-{
-	return -EBUSY;
-}
-
-static const struct of_device_id tpu_of_table[] = {
-	{ .compatible = "renesas,tpu" },
-	{ }
-};
-
-static struct platform_driver tpu_driver = {
-	.probe		= tpu_probe,
-	.remove		= tpu_remove,
-	.driver		= {
-		.name	= "h8s-tpu",
-		.of_match_table = of_match_ptr(tpu_of_table),
-	}
-};
-
-static int __init tpu_init(void)
-{
-	return platform_driver_register(&tpu_driver);
-}
-
-static void __exit tpu_exit(void)
-{
-	platform_driver_unregister(&tpu_driver);
-}
-
-subsys_initcall(tpu_init);
-module_exit(tpu_exit);
-MODULE_AUTHOR("Yoshinori Sato");
-MODULE_DESCRIPTION("H8S Timer Pulse Unit Driver");
-MODULE_LICENSE("GPL v2");