Adding upstream version 4.19.304.upstream/4.19.304upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 168 deletions

diff --git a/drivers/clocksource/vt8500_timer.c b/drivers/clocksource/vt8500_timer.c
deleted file mode 100644
index e0f7489cf..000000000
--- a/drivers/clocksource/vt8500_timer.c
+++ /dev/null
@@ -1,168 +0,0 @@
-/*
- *  arch/arm/mach-vt8500/timer.c
- *
- *  Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz>
- *  Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-/*
- * This file is copied and modified from the original timer.c provided by
- * Alexey Charkov. Minor changes have been made for Device Tree Support.
- */
-
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/clocksource.h>
-#include <linux/clockchips.h>
-#include <linux/delay.h>
-
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-
-#define VT8500_TIMER_OFFSET	0x0100
-#define VT8500_TIMER_HZ		3000000
-#define TIMER_MATCH_VAL		0x0000
-#define TIMER_COUNT_VAL		0x0010
-#define TIMER_STATUS_VAL	0x0014
-#define TIMER_IER_VAL		0x001c		/* interrupt enable */
-#define TIMER_CTRL_VAL		0x0020
-#define TIMER_AS_VAL		0x0024		/* access status */
-#define TIMER_COUNT_R_ACTIVE	(1 << 5)	/* not ready for read */
-#define TIMER_COUNT_W_ACTIVE	(1 << 4)	/* not ready for write */
-#define TIMER_MATCH_W_ACTIVE	(1 << 0)	/* not ready for write */
-
-#define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
-
-#define MIN_OSCR_DELTA		16
-
-static void __iomem *regbase;
-
-static u64 vt8500_timer_read(struct clocksource *cs)
-{
-	int loops = msecs_to_loops(10);
-	writel(3, regbase + TIMER_CTRL_VAL);
-	while ((readl((regbase + TIMER_AS_VAL)) & TIMER_COUNT_R_ACTIVE)
-						&& --loops)
-		cpu_relax();
-	return readl(regbase + TIMER_COUNT_VAL);
-}
-
-static struct clocksource clocksource = {
-	.name           = "vt8500_timer",
-	.rating         = 200,
-	.read           = vt8500_timer_read,
-	.mask           = CLOCKSOURCE_MASK(32),
-	.flags          = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static int vt8500_timer_set_next_event(unsigned long cycles,
-				    struct clock_event_device *evt)
-{
-	int loops = msecs_to_loops(10);
-	u64 alarm = clocksource.read(&clocksource) + cycles;
-	while ((readl(regbase + TIMER_AS_VAL) & TIMER_MATCH_W_ACTIVE)
-						&& --loops)
-		cpu_relax();
-	writel((unsigned long)alarm, regbase + TIMER_MATCH_VAL);
-
-	if ((signed)(alarm - clocksource.read(&clocksource)) <= MIN_OSCR_DELTA)
-		return -ETIME;
-
-	writel(1, regbase + TIMER_IER_VAL);
-
-	return 0;
-}
-
-static int vt8500_shutdown(struct clock_event_device *evt)
-{
-	writel(readl(regbase + TIMER_CTRL_VAL) | 1, regbase + TIMER_CTRL_VAL);
-	writel(0, regbase + TIMER_IER_VAL);
-	return 0;
-}
-
-static struct clock_event_device clockevent = {
-	.name			= "vt8500_timer",
-	.features		= CLOCK_EVT_FEAT_ONESHOT,
-	.rating			= 200,
-	.set_next_event		= vt8500_timer_set_next_event,
-	.set_state_shutdown	= vt8500_shutdown,
-	.set_state_oneshot	= vt8500_shutdown,
-};
-
-static irqreturn_t vt8500_timer_interrupt(int irq, void *dev_id)
-{
-	struct clock_event_device *evt = dev_id;
-	writel(0xf, regbase + TIMER_STATUS_VAL);
-	evt->event_handler(evt);
-
-	return IRQ_HANDLED;
-}
-
-static struct irqaction irq = {
-	.name    = "vt8500_timer",
-	.flags   = IRQF_TIMER | IRQF_IRQPOLL,
-	.handler = vt8500_timer_interrupt,
-	.dev_id  = &clockevent,
-};
-
-static int __init vt8500_timer_init(struct device_node *np)
-{
-	int timer_irq, ret;
-
-	regbase = of_iomap(np, 0);
-	if (!regbase) {
-		pr_err("%s: Missing iobase description in Device Tree\n",
-								__func__);
-		return -ENXIO;
-	}
-
-	timer_irq = irq_of_parse_and_map(np, 0);
-	if (!timer_irq) {
-		pr_err("%s: Missing irq description in Device Tree\n",
-								__func__);
-		return -EINVAL;
-	}
-
-	writel(1, regbase + TIMER_CTRL_VAL);
-	writel(0xf, regbase + TIMER_STATUS_VAL);
-	writel(~0, regbase + TIMER_MATCH_VAL);
-
-	ret = clocksource_register_hz(&clocksource, VT8500_TIMER_HZ);
-	if (ret) {
-		pr_err("%s: vt8500_timer_init: clocksource_register failed for %s\n",
-		       __func__, clocksource.name);
-		return ret;
-	}
-
-	clockevent.cpumask = cpumask_of(0);
-
-	ret = setup_irq(timer_irq, &irq);
-	if (ret) {
-		pr_err("%s: setup_irq failed for %s\n", __func__,
-							clockevent.name);
-		return ret;
-	}
-
-	clockevents_config_and_register(&clockevent, VT8500_TIMER_HZ,
-					MIN_OSCR_DELTA * 2, 0xf0000000);
-
-	return 0;
-}
-
-TIMER_OF_DECLARE(vt8500, "via,vt8500-timer", vt8500_timer_init);