1 files changed, 0 insertions, 349 deletions
diff --git a/ANDROID_3.4.5/arch/arm/kernel/smp_twd.c b/ANDROID_3.4.5/arch/arm/kernel/smp_twd.c
deleted file mode 100644
index ad0ac9a0..00000000
--- a/ANDROID_3.4.5/arch/arm/kernel/smp_twd.c
+++ /dev/null
@@ -1,349 +0,0 @@
-/*
- *  linux/arch/arm/kernel/smp_twd.c
- *
- *  Copyright (C) 2002 ARM Ltd.
- *  All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/clk.h>
-#include <linux/cpufreq.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/smp.h>
-#include <linux/jiffies.h>
-#include <linux/clockchips.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/of_irq.h>
-#include <linux/of_address.h>
-
-#include <asm/smp_twd.h>
-#include <asm/localtimer.h>
-#include <asm/hardware/gic.h>
-#include <mach/hardware.h>
-
-/* set up by the platform code */
-static void __iomem *twd_base;
-
-static struct clk *twd_clk;
-static unsigned long twd_timer_rate;
-
-static struct clock_event_device __percpu **twd_evt;
-static int twd_ppi;
-
-static void twd_set_mode(enum clock_event_mode mode,
-			struct clock_event_device *clk)
-{
-	unsigned long ctrl;
-
-	switch (mode) {
-	case CLOCK_EVT_MODE_PERIODIC:
-		/* timer load already set up */
-		ctrl = TWD_TIMER_CONTROL_ENABLE | TWD_TIMER_CONTROL_IT_ENABLE
-			| TWD_TIMER_CONTROL_PERIODIC;
-		__raw_writel(twd_timer_rate / HZ, twd_base + TWD_TIMER_LOAD);
-		break;
-	case CLOCK_EVT_MODE_ONESHOT:
-		/* period set, and timer enabled in 'next_event' hook */
-		ctrl = TWD_TIMER_CONTROL_IT_ENABLE | TWD_TIMER_CONTROL_ONESHOT;
-		break;
-	case CLOCK_EVT_MODE_UNUSED:
-	case CLOCK_EVT_MODE_SHUTDOWN:
-	default:
-		ctrl = 0;
-	}
-
-	__raw_writel(ctrl, twd_base + TWD_TIMER_CONTROL);
-}
-
-static int twd_set_next_event(unsigned long evt,
-			struct clock_event_device *unused)
-{
-	unsigned long ctrl = __raw_readl(twd_base + TWD_TIMER_CONTROL);
-
-	ctrl |= TWD_TIMER_CONTROL_ENABLE;
-
-	__raw_writel(evt, twd_base + TWD_TIMER_COUNTER);
-	__raw_writel(ctrl, twd_base + TWD_TIMER_CONTROL);
-
-	return 0;
-}
-
-/*
- * local_timer_ack: checks for a local timer interrupt.
- *
- * If a local timer interrupt has occurred, acknowledge and return 1.
- * Otherwise, return 0.
- */
-static int twd_timer_ack(void)
-{
-	if (__raw_readl(twd_base + TWD_TIMER_INTSTAT)) {
-		__raw_writel(1, twd_base + TWD_TIMER_INTSTAT);
-		return 1;
-	}
-
-	return 0;
-}
-
-static void twd_timer_stop(struct clock_event_device *clk)
-{
-	twd_set_mode(CLOCK_EVT_MODE_UNUSED, clk);
-	disable_percpu_irq(clk->irq);
-}
-
-#ifdef CONFIG_CPU_FREQ
-
-/*
- * Updates clockevent frequency when the cpu frequency changes.
- * Called on the cpu that is changing frequency with interrupts disabled.
- */
-static void twd_update_frequency(void *data)
-{
-	twd_timer_rate = (auto_pll_divisor(DEV_ARM, GET_CPUTIMER, 0, 0) / 2);
-
-	clockevents_update_freq(*__this_cpu_ptr(twd_evt), twd_timer_rate);
-}
-
-static int twd_cpufreq_transition(struct notifier_block *nb,
-	unsigned long state, void *data)
-{
-	struct cpufreq_freqs *freqs = data;
-
-	/*
-	 * The twd clock events must be reprogrammed to account for the new
-	 * frequency.  The timer is local to a cpu, so cross-call to the
-	 * changing cpu.
-	 */
-	if (state == CPUFREQ_POSTCHANGE || state == CPUFREQ_RESUMECHANGE)
-		smp_call_function_single(freqs->cpu, twd_update_frequency,
-			data, 1);
-
-	return NOTIFY_OK;
-}
-
-static struct notifier_block twd_cpufreq_nb = {
-	.notifier_call = twd_cpufreq_transition,
-};
-
-static int twd_cpufreq_init(void)
-{
-	if (twd_evt && *__this_cpu_ptr(twd_evt) && !IS_ERR(twd_clk))
-		return cpufreq_register_notifier(&twd_cpufreq_nb,
-			CPUFREQ_TRANSITION_NOTIFIER);
-
-	return 0;
-}
-core_initcall(twd_cpufreq_init);
-
-#endif
-
-static void __cpuinit twd_calibrate_rate(void)
-{
-	unsigned long count;
-	u64 waitjiffies;
-
-	/*
-	 * If this is the first time round, we need to work out how fast
-	 * the timer ticks
-	 */
-	if (twd_timer_rate == 0) {
-		printk(KERN_INFO "Calibrating local timer... ");
-
-		/* Wait for a tick to start */
-		waitjiffies = get_jiffies_64() + 1;
-
-		while (get_jiffies_64() < waitjiffies)
-			udelay(10);
-
-		/* OK, now the tick has started, let's get the timer going */
-		waitjiffies += 5;
-
-				 /* enable, no interrupt or reload */
-		__raw_writel(0x1, twd_base + TWD_TIMER_CONTROL);
-
-				 /* maximum value */
-		__raw_writel(0xFFFFFFFFU, twd_base + TWD_TIMER_COUNTER);
-
-		while (get_jiffies_64() < waitjiffies)
-			udelay(10);
-
-		count = __raw_readl(twd_base + TWD_TIMER_COUNTER);
-
-		twd_timer_rate = (0xFFFFFFFFU - count) * (HZ / 5);
-
-		printk("%lu.%02luMHz.\n", twd_timer_rate / 1000000,
-			(twd_timer_rate / 10000) % 100);
-	}
-}
-
-static irqreturn_t twd_handler(int irq, void *dev_id)
-{
-	struct clock_event_device *evt = *(struct clock_event_device **)dev_id;
-
-	if (twd_timer_ack()) {
-		evt->event_handler(evt);
-		return IRQ_HANDLED;
-	}
-
-	return IRQ_NONE;
-}
-
-static struct clk *twd_get_clock(void)
-{
-	struct clk *clk;
-	int err;
-
-	clk = clk_get_sys("smp_twd", NULL);
-	if (IS_ERR(clk)) {
-		pr_err("smp_twd: clock not found: %d\n", (int)PTR_ERR(clk));
-		return clk;
-	}
-
-	err = clk_prepare(clk);
-	if (err) {
-		pr_err("smp_twd: clock failed to prepare: %d\n", err);
-		clk_put(clk);
-		return ERR_PTR(err);
-	}
-
-	err = clk_enable(clk);
-	if (err) {
-		pr_err("smp_twd: clock failed to enable: %d\n", err);
-		clk_unprepare(clk);
-		clk_put(clk);
-		return ERR_PTR(err);
-	}
-
-	return clk;
-}
-
-/*
- * Setup the local clock events for a CPU.
- */
-static int __cpuinit twd_timer_setup(struct clock_event_device *clk)
-{
-	struct clock_event_device **this_cpu_clk;
-
-	twd_calibrate_rate();
-	__raw_writel(0, twd_base + TWD_TIMER_CONTROL);
-
-	clk->name = "local_timer";
-	clk->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT |
-			CLOCK_EVT_FEAT_C3STOP;
-	clk->rating = 350;
-	clk->set_mode = twd_set_mode;
-	clk->set_next_event = twd_set_next_event;
-	clk->irq = twd_ppi;
-
-	this_cpu_clk = __this_cpu_ptr(twd_evt);
-	*this_cpu_clk = clk;
-
-	clockevents_config_and_register(clk, twd_timer_rate,
-					0xf, 0xffffffff);
-	enable_percpu_irq(clk->irq, 0);
-
-	return 0;
-}
-
-static struct local_timer_ops twd_lt_ops __cpuinitdata = {
-	.setup	= twd_timer_setup,
-	.stop	= twd_timer_stop,
-};
-
-static int __init twd_local_timer_common_register(void)
-{
-	int err;
-
-	twd_evt = alloc_percpu(struct clock_event_device *);
-	if (!twd_evt) {
-		err = -ENOMEM;
-		goto out_free;
-	}
-
-	err = request_percpu_irq(twd_ppi, twd_handler, "twd", twd_evt);
-	if (err) {
-		pr_err("twd: can't register interrupt %d (%d)\n", twd_ppi, err);
-		goto out_free;
-	}
-
-	err = local_timer_register(&twd_lt_ops);
-	if (err)
-		goto out_irq;
-
-	if (!twd_clk)
-		twd_clk = twd_get_clock();
-
-	if (!IS_ERR_OR_NULL(twd_clk))
-		twd_timer_rate = clk_get_rate(twd_clk);
-	else
-		twd_calibrate_rate();
-
-	return 0;
-
-out_irq:
-	free_percpu_irq(twd_ppi, twd_evt);
-out_free:
-	iounmap(twd_base);
-	twd_base = NULL;
-	free_percpu(twd_evt);
-
-	return err;
-}
-
-int __init twd_local_timer_register(struct twd_local_timer *tlt)
-{
-	if (twd_base || twd_evt)
-		return -EBUSY;
-
-	twd_ppi	= tlt->res[1].start;
-
-	twd_base = ioremap(tlt->res[0].start, resource_size(&tlt->res[0]));
-	if (!twd_base)
-		return -ENOMEM;
-
-	return twd_local_timer_common_register();
-}
-
-#ifdef CONFIG_OF
-const static struct of_device_id twd_of_match[] __initconst = {
-	{ .compatible = "arm,cortex-a9-twd-timer",	},
-	{ .compatible = "arm,cortex-a5-twd-timer",	},
-	{ .compatible = "arm,arm11mp-twd-timer",	},
-	{ },
-};
-
-void __init twd_local_timer_of_register(void)
-{
-	struct device_node *np;
-	int err;
-
-	np = of_find_matching_node(NULL, twd_of_match);
-	if (!np) {
-		err = -ENODEV;
-		goto out;
-	}
-
-	twd_ppi = irq_of_parse_and_map(np, 0);
-	if (!twd_ppi) {
-		err = -EINVAL;
-		goto out;
-	}
-
-	twd_base = of_iomap(np, 0);
-	if (!twd_base) {
-		err = -ENOMEM;
-		goto out;
-	}
-
-	err = twd_local_timer_common_register();
-
-out:
-	WARN(err, "twd_local_timer_of_register failed (%d)\n", err);
-}
-#endif