clocksource/drivers: Unify the names to timer-* format

In order to make some housekeeping in the directory, this patch renames
drivers to the timer-* format in order to unify their names.

There is no functional changes.

Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

1 files changed, 0 insertions, 376 deletions

diff --git a/drivers/clocksource/fsl_ftm_timer.c b/drivers/clocksource/fsl_ftm_timer.c
deleted file mode 100644
index 846d18daf893..000000000000
--- a/drivers/clocksource/fsl_ftm_timer.c
+++ /dev/null
@@ -1,376 +0,0 @@
-/*
- * Freescale FlexTimer Module (FTM) timer driver.
- *
- * Copyright 2014 Freescale Semiconductor, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- */
-
-#include <linux/clk.h>
-#include <linux/clockchips.h>
-#include <linux/clocksource.h>
-#include <linux/err.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/sched_clock.h>
-#include <linux/slab.h>
-
-#define FTM_SC		0x00
-#define FTM_SC_CLK_SHIFT	3
-#define FTM_SC_CLK_MASK	(0x3 << FTM_SC_CLK_SHIFT)
-#define FTM_SC_CLK(c)	((c) << FTM_SC_CLK_SHIFT)
-#define FTM_SC_PS_MASK	0x7
-#define FTM_SC_TOIE	BIT(6)
-#define FTM_SC_TOF	BIT(7)
-
-#define FTM_CNT		0x04
-#define FTM_MOD		0x08
-#define FTM_CNTIN	0x4C
-
-#define FTM_PS_MAX	7
-
-struct ftm_clock_device {
-	void __iomem *clksrc_base;
-	void __iomem *clkevt_base;
-	unsigned long periodic_cyc;
-	unsigned long ps;
-	bool big_endian;
-};
-
-static struct ftm_clock_device *priv;
-
-static inline u32 ftm_readl(void __iomem *addr)
-{
-	if (priv->big_endian)
-		return ioread32be(addr);
-	else
-		return ioread32(addr);
-}
-
-static inline void ftm_writel(u32 val, void __iomem *addr)
-{
-	if (priv->big_endian)
-		iowrite32be(val, addr);
-	else
-		iowrite32(val, addr);
-}
-
-static inline void ftm_counter_enable(void __iomem *base)
-{
-	u32 val;
-
-	/* select and enable counter clock source */
-	val = ftm_readl(base + FTM_SC);
-	val &= ~(FTM_SC_PS_MASK | FTM_SC_CLK_MASK);
-	val |= priv->ps | FTM_SC_CLK(1);
-	ftm_writel(val, base + FTM_SC);
-}
-
-static inline void ftm_counter_disable(void __iomem *base)
-{
-	u32 val;
-
-	/* disable counter clock source */
-	val = ftm_readl(base + FTM_SC);
-	val &= ~(FTM_SC_PS_MASK | FTM_SC_CLK_MASK);
-	ftm_writel(val, base + FTM_SC);
-}
-
-static inline void ftm_irq_acknowledge(void __iomem *base)
-{
-	u32 val;
-
-	val = ftm_readl(base + FTM_SC);
-	val &= ~FTM_SC_TOF;
-	ftm_writel(val, base + FTM_SC);
-}
-
-static inline void ftm_irq_enable(void __iomem *base)
-{
-	u32 val;
-
-	val = ftm_readl(base + FTM_SC);
-	val |= FTM_SC_TOIE;
-	ftm_writel(val, base + FTM_SC);
-}
-
-static inline void ftm_irq_disable(void __iomem *base)
-{
-	u32 val;
-
-	val = ftm_readl(base + FTM_SC);
-	val &= ~FTM_SC_TOIE;
-	ftm_writel(val, base + FTM_SC);
-}
-
-static inline void ftm_reset_counter(void __iomem *base)
-{
-	/*
-	 * The CNT register contains the FTM counter value.
-	 * Reset clears the CNT register. Writing any value to COUNT
-	 * updates the counter with its initial value, CNTIN.
-	 */
-	ftm_writel(0x00, base + FTM_CNT);
-}
-
-static u64 notrace ftm_read_sched_clock(void)
-{
-	return ftm_readl(priv->clksrc_base + FTM_CNT);
-}
-
-static int ftm_set_next_event(unsigned long delta,
-				struct clock_event_device *unused)
-{
-	/*
-	 * The CNNIN and MOD are all double buffer registers, writing
-	 * to the MOD register latches the value into a buffer. The MOD
-	 * register is updated with the value of its write buffer with
-	 * the following scenario:
-	 * a, the counter source clock is diabled.
-	 */
-	ftm_counter_disable(priv->clkevt_base);
-
-	/* Force the value of CNTIN to be loaded into the FTM counter */
-	ftm_reset_counter(priv->clkevt_base);
-
-	/*
-	 * The counter increments until the value of MOD is reached,
-	 * at which point the counter is reloaded with the value of CNTIN.
-	 * The TOF (the overflow flag) bit is set when the FTM counter
-	 * changes from MOD to CNTIN. So we should using the delta - 1.
-	 */
-	ftm_writel(delta - 1, priv->clkevt_base + FTM_MOD);
-
-	ftm_counter_enable(priv->clkevt_base);
-
-	ftm_irq_enable(priv->clkevt_base);
-
-	return 0;
-}
-
-static int ftm_set_oneshot(struct clock_event_device *evt)
-{
-	ftm_counter_disable(priv->clkevt_base);
-	return 0;
-}
-
-static int ftm_set_periodic(struct clock_event_device *evt)
-{
-	ftm_set_next_event(priv->periodic_cyc, evt);
-	return 0;
-}
-
-static irqreturn_t ftm_evt_interrupt(int irq, void *dev_id)
-{
-	struct clock_event_device *evt = dev_id;
-
-	ftm_irq_acknowledge(priv->clkevt_base);
-
-	if (likely(clockevent_state_oneshot(evt))) {
-		ftm_irq_disable(priv->clkevt_base);
-		ftm_counter_disable(priv->clkevt_base);
-	}
-
-	evt->event_handler(evt);
-
-	return IRQ_HANDLED;
-}
-
-static struct clock_event_device ftm_clockevent = {
-	.name			= "Freescale ftm timer",
-	.features		= CLOCK_EVT_FEAT_PERIODIC |
-				  CLOCK_EVT_FEAT_ONESHOT,
-	.set_state_periodic	= ftm_set_periodic,
-	.set_state_oneshot	= ftm_set_oneshot,
-	.set_next_event		= ftm_set_next_event,
-	.rating			= 300,
-};
-
-static struct irqaction ftm_timer_irq = {
-	.name		= "Freescale ftm timer",
-	.flags		= IRQF_TIMER | IRQF_IRQPOLL,
-	.handler	= ftm_evt_interrupt,
-	.dev_id		= &ftm_clockevent,
-};
-
-static int __init ftm_clockevent_init(unsigned long freq, int irq)
-{
-	int err;
-
-	ftm_writel(0x00, priv->clkevt_base + FTM_CNTIN);
-	ftm_writel(~0u, priv->clkevt_base + FTM_MOD);
-
-	ftm_reset_counter(priv->clkevt_base);
-
-	err = setup_irq(irq, &ftm_timer_irq);
-	if (err) {
-		pr_err("ftm: setup irq failed: %d\n", err);
-		return err;
-	}
-
-	ftm_clockevent.cpumask = cpumask_of(0);
-	ftm_clockevent.irq = irq;
-
-	clockevents_config_and_register(&ftm_clockevent,
-					freq / (1 << priv->ps),
-					1, 0xffff);
-
-	ftm_counter_enable(priv->clkevt_base);
-
-	return 0;
-}
-
-static int __init ftm_clocksource_init(unsigned long freq)
-{
-	int err;
-
-	ftm_writel(0x00, priv->clksrc_base + FTM_CNTIN);
-	ftm_writel(~0u, priv->clksrc_base + FTM_MOD);
-
-	ftm_reset_counter(priv->clksrc_base);
-
-	sched_clock_register(ftm_read_sched_clock, 16, freq / (1 << priv->ps));
-	err = clocksource_mmio_init(priv->clksrc_base + FTM_CNT, "fsl-ftm",
-				    freq / (1 << priv->ps), 300, 16,
-				    clocksource_mmio_readl_up);
-	if (err) {
-		pr_err("ftm: init clock source mmio failed: %d\n", err);
-		return err;
-	}
-
-	ftm_counter_enable(priv->clksrc_base);
-
-	return 0;
-}
-
-static int __init __ftm_clk_init(struct device_node *np, char *cnt_name,
-				 char *ftm_name)
-{
-	struct clk *clk;
-	int err;
-
-	clk = of_clk_get_by_name(np, cnt_name);
-	if (IS_ERR(clk)) {
-		pr_err("ftm: Cannot get \"%s\": %ld\n", cnt_name, PTR_ERR(clk));
-		return PTR_ERR(clk);
-	}
-	err = clk_prepare_enable(clk);
-	if (err) {
-		pr_err("ftm: clock failed to prepare+enable \"%s\": %d\n",
-			cnt_name, err);
-		return err;
-	}
-
-	clk = of_clk_get_by_name(np, ftm_name);
-	if (IS_ERR(clk)) {
-		pr_err("ftm: Cannot get \"%s\": %ld\n", ftm_name, PTR_ERR(clk));
-		return PTR_ERR(clk);
-	}
-	err = clk_prepare_enable(clk);
-	if (err)
-		pr_err("ftm: clock failed to prepare+enable \"%s\": %d\n",
-			ftm_name, err);
-
-	return clk_get_rate(clk);
-}
-
-static unsigned long __init ftm_clk_init(struct device_node *np)
-{
-	long freq;
-
-	freq = __ftm_clk_init(np, "ftm-evt-counter-en", "ftm-evt");
-	if (freq <= 0)
-		return 0;
-
-	freq = __ftm_clk_init(np, "ftm-src-counter-en", "ftm-src");
-	if (freq <= 0)
-		return 0;
-
-	return freq;
-}
-
-static int __init ftm_calc_closest_round_cyc(unsigned long freq)
-{
-	priv->ps = 0;
-
-	/* The counter register is only using the lower 16 bits, and
-	 * if the 'freq' value is to big here, then the periodic_cyc
-	 * may exceed 0xFFFF.
-	 */
-	do {
-		priv->periodic_cyc = DIV_ROUND_CLOSEST(freq,
-						HZ * (1 << priv->ps++));
-	} while (priv->periodic_cyc > 0xFFFF);
-
-	if (priv->ps > FTM_PS_MAX) {
-		pr_err("ftm: the prescaler is %lu > %d\n",
-				priv->ps, FTM_PS_MAX);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int __init ftm_timer_init(struct device_node *np)
-{
-	unsigned long freq;
-	int ret, irq;
-
-	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return -ENOMEM;
-
-	ret = -ENXIO;
-	priv->clkevt_base = of_iomap(np, 0);
-	if (!priv->clkevt_base) {
-		pr_err("ftm: unable to map event timer registers\n");
-		goto err_clkevt;
-	}
-
-	priv->clksrc_base = of_iomap(np, 1);
-	if (!priv->clksrc_base) {
-		pr_err("ftm: unable to map source timer registers\n");
-		goto err_clksrc;
-	}
-
-	ret = -EINVAL;
-	irq = irq_of_parse_and_map(np, 0);
-	if (irq <= 0) {
-		pr_err("ftm: unable to get IRQ from DT, %d\n", irq);
-		goto err;
-	}
-
-	priv->big_endian = of_property_read_bool(np, "big-endian");
-
-	freq = ftm_clk_init(np);
-	if (!freq)
-		goto err;
-
-	ret = ftm_calc_closest_round_cyc(freq);
-	if (ret)
-		goto err;
-
-	ret = ftm_clocksource_init(freq);
-	if (ret)
-		goto err;
-
-	ret = ftm_clockevent_init(freq, irq);
-	if (ret)
-		goto err;
-
-	return 0;
-
-err:
-	iounmap(priv->clksrc_base);
-err_clksrc:
-	iounmap(priv->clkevt_base);
-err_clkevt:
-	kfree(priv);
-	return ret;
-}
-TIMER_OF_DECLARE(flextimer, "fsl,ftm-timer", ftm_timer_init);