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Message-Id: <1446200775-23898-1-git-send-email-daniel.lezcano@linaro.org>
Date: Fri, 30 Oct 2015 11:26:08 +0100
From: Daniel Lezcano <daniel.lezcano@...aro.org>
To: tglx@...utronix.de
Cc: linux-kernel@...r.kernel.org, arnd@...db.de,
Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Yoshinori Sato <ysato@...rs.sourceforge.jp>,
devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND...),
uclinux-h8-devel@...ts.sourceforge.jp (moderated list:H8/300
ARCHITECTURE)
Subject: [PATCH] Revert "h8300: clocksource"
This reverts commit 618b902d8c098f2fff188119da7b3184c4bc5483.
The renesas architecture have been dropped and re-introduced two years
after with a supposed improvement of the code.
While looking at the timer drivers, I see it did not passed a correct code
review process. No maintainters were in Cc, not code review and no ack
from them (Thomas and I).
Even if those drivers where already in the tree several years ago, that
does not prevent them, when re-introduced, to be reviewed again and at
least acked by the maintainer.
Even if the patches where on lkml@, that does not prevent the different
sub-system maintainers to be in Cc.
Instead of that, these drivers passed silently through another tree (arm-soc
I guess).
Revert these drivers in order to have them re-submitted and reviewed again.
There is legacy code to be removed.
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Conflicts:
drivers/clocksource/Kconfig
drivers/clocksource/Makefile
drivers/clocksource/h8300_timer16.c
drivers/clocksource/h8300_timer8.c
drivers/clocksource/h8300_tpu.c
---
.../bindings/timer/renesas,16bit-timer.txt | 25 --
.../bindings/timer/renesas,8bit-timer.txt | 25 --
.../devicetree/bindings/timer/renesas,tpu.txt | 21 --
drivers/clocksource/Kconfig | 7 -
drivers/clocksource/Makefile | 3 -
drivers/clocksource/h8300_timer16.c | 253 ----------------
drivers/clocksource/h8300_timer8.c | 317 ---------------------
drivers/clocksource/h8300_tpu.c | 206 -------------
8 files changed, 857 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/timer/renesas,16bit-timer.txt
delete mode 100644 Documentation/devicetree/bindings/timer/renesas,8bit-timer.txt
delete mode 100644 Documentation/devicetree/bindings/timer/renesas,tpu.txt
delete mode 100644 drivers/clocksource/h8300_timer16.c
delete mode 100644 drivers/clocksource/h8300_timer8.c
delete mode 100644 drivers/clocksource/h8300_tpu.c
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@...f68 {
- 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@...f80 {
- 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@...fe0 {
- 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@...rs.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@...rs.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@...rs.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");
--
1.9.1
--
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