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Diffstat (limited to 'arch/arm/mach-w90x900/time.c')
-rw-r--r--arch/arm/mach-w90x900/time.c168
1 files changed, 0 insertions, 168 deletions
diff --git a/arch/arm/mach-w90x900/time.c b/arch/arm/mach-w90x900/time.c
deleted file mode 100644
index dd20fab9a960..000000000000
--- a/arch/arm/mach-w90x900/time.c
+++ /dev/null
@@ -1,168 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * linux/arch/arm/mach-w90x900/time.c
- *
- * Based on linux/arch/arm/plat-s3c24xx/time.c by Ben Dooks
- *
- * Copyright (c) 2009 Nuvoton technology corporation
- * All rights reserved.
- *
- * Wan ZongShun <mcuos.com@gmail.com>
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/leds.h>
-#include <linux/clocksource.h>
-#include <linux/clockchips.h>
-
-#include <asm/mach-types.h>
-#include <asm/mach/irq.h>
-#include <asm/mach/time.h>
-
-#include <mach/map.h>
-#include "regs-timer.h"
-
-#include "nuc9xx.h"
-
-#define RESETINT 0x1f
-#define PERIOD (0x01 << 27)
-#define ONESHOT (0x00 << 27)
-#define COUNTEN (0x01 << 30)
-#define INTEN (0x01 << 29)
-
-#define TICKS_PER_SEC 100
-#define PRESCALE 0x63 /* Divider = prescale + 1 */
-
-#define TDR_SHIFT 24
-
-static unsigned int timer0_load;
-
-static int nuc900_clockevent_shutdown(struct clock_event_device *evt)
-{
- unsigned int val = __raw_readl(REG_TCSR0) & ~(0x03 << 27);
-
- __raw_writel(val, REG_TCSR0);
- return 0;
-}
-
-static int nuc900_clockevent_set_oneshot(struct clock_event_device *evt)
-{
- unsigned int val = __raw_readl(REG_TCSR0) & ~(0x03 << 27);
-
- val |= (ONESHOT | COUNTEN | INTEN | PRESCALE);
-
- __raw_writel(val, REG_TCSR0);
- return 0;
-}
-
-static int nuc900_clockevent_set_periodic(struct clock_event_device *evt)
-{
- unsigned int val = __raw_readl(REG_TCSR0) & ~(0x03 << 27);
-
- __raw_writel(timer0_load, REG_TICR0);
- val |= (PERIOD | COUNTEN | INTEN | PRESCALE);
- __raw_writel(val, REG_TCSR0);
- return 0;
-}
-
-static int nuc900_clockevent_setnextevent(unsigned long evt,
- struct clock_event_device *clk)
-{
- unsigned int val;
-
- __raw_writel(evt, REG_TICR0);
-
- val = __raw_readl(REG_TCSR0);
- val |= (COUNTEN | INTEN | PRESCALE);
- __raw_writel(val, REG_TCSR0);
-
- return 0;
-}
-
-static struct clock_event_device nuc900_clockevent_device = {
- .name = "nuc900-timer0",
- .features = CLOCK_EVT_FEAT_PERIODIC |
- CLOCK_EVT_FEAT_ONESHOT,
- .set_state_shutdown = nuc900_clockevent_shutdown,
- .set_state_periodic = nuc900_clockevent_set_periodic,
- .set_state_oneshot = nuc900_clockevent_set_oneshot,
- .tick_resume = nuc900_clockevent_shutdown,
- .set_next_event = nuc900_clockevent_setnextevent,
- .rating = 300,
-};
-
-/*IRQ handler for the timer*/
-
-static irqreturn_t nuc900_timer0_interrupt(int irq, void *dev_id)
-{
- struct clock_event_device *evt = &nuc900_clockevent_device;
-
- __raw_writel(0x01, REG_TISR); /* clear TIF0 */
-
- evt->event_handler(evt);
- return IRQ_HANDLED;
-}
-
-static struct irqaction nuc900_timer0_irq = {
- .name = "nuc900-timer0",
- .flags = IRQF_TIMER | IRQF_IRQPOLL,
- .handler = nuc900_timer0_interrupt,
-};
-
-static void __init nuc900_clockevents_init(void)
-{
- unsigned int rate;
- struct clk *clk = clk_get(NULL, "timer0");
-
- BUG_ON(IS_ERR(clk));
-
- __raw_writel(0x00, REG_TCSR0);
-
- clk_enable(clk);
- rate = clk_get_rate(clk) / (PRESCALE + 1);
-
- timer0_load = (rate / TICKS_PER_SEC);
-
- __raw_writel(RESETINT, REG_TISR);
- setup_irq(IRQ_TIMER0, &nuc900_timer0_irq);
-
- nuc900_clockevent_device.cpumask = cpumask_of(0);
-
- clockevents_config_and_register(&nuc900_clockevent_device, rate,
- 0xf, 0xffffffff);
-}
-
-static void __init nuc900_clocksource_init(void)
-{
- unsigned int val;
- unsigned int rate;
- struct clk *clk = clk_get(NULL, "timer1");
-
- BUG_ON(IS_ERR(clk));
-
- __raw_writel(0x00, REG_TCSR1);
-
- clk_enable(clk);
- rate = clk_get_rate(clk) / (PRESCALE + 1);
-
- __raw_writel(0xffffffff, REG_TICR1);
-
- val = __raw_readl(REG_TCSR1);
- val |= (COUNTEN | PERIOD | PRESCALE);
- __raw_writel(val, REG_TCSR1);
-
- clocksource_mmio_init(REG_TDR1, "nuc900-timer1", rate, 200,
- TDR_SHIFT, clocksource_mmio_readl_down);
-}
-
-void __init nuc900_timer_init(void)
-{
- nuc900_clocksource_init();
- nuc900_clockevents_init();
-}