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-rw-r--r--arch/arm/plat-versatile/Makefile1
-rw-r--r--arch/arm/plat-versatile/include/plat/timer-sp.h2
-rw-r--r--arch/arm/plat-versatile/timer-sp.c156
3 files changed, 0 insertions, 159 deletions
diff --git a/arch/arm/plat-versatile/Makefile b/arch/arm/plat-versatile/Makefile
index 5cf88e8427b..aaa571d1792 100644
--- a/arch/arm/plat-versatile/Makefile
+++ b/arch/arm/plat-versatile/Makefile
@@ -1,5 +1,4 @@
1obj-y := clock.o 1obj-y := clock.o
2obj-$(CONFIG_ARM_TIMER_SP804) += timer-sp.o
3obj-$(CONFIG_ARCH_REALVIEW) += sched-clock.o 2obj-$(CONFIG_ARCH_REALVIEW) += sched-clock.o
4obj-$(CONFIG_ARCH_VERSATILE) += sched-clock.o 3obj-$(CONFIG_ARCH_VERSATILE) += sched-clock.o
5ifeq ($(CONFIG_LEDS_CLASS),y) 4ifeq ($(CONFIG_LEDS_CLASS),y)
diff --git a/arch/arm/plat-versatile/include/plat/timer-sp.h b/arch/arm/plat-versatile/include/plat/timer-sp.h
deleted file mode 100644
index 21e75e30d49..00000000000
--- a/arch/arm/plat-versatile/include/plat/timer-sp.h
+++ /dev/null
@@ -1,2 +0,0 @@
1void sp804_clocksource_init(void __iomem *);
2void sp804_clockevents_init(void __iomem *, unsigned int);
diff --git a/arch/arm/plat-versatile/timer-sp.c b/arch/arm/plat-versatile/timer-sp.c
deleted file mode 100644
index fb0d1c29971..00000000000
--- a/arch/arm/plat-versatile/timer-sp.c
+++ /dev/null
@@ -1,156 +0,0 @@
1/*
2 * linux/arch/arm/plat-versatile/timer-sp.c
3 *
4 * Copyright (C) 1999 - 2003 ARM Limited
5 * Copyright (C) 2000 Deep Blue Solutions Ltd
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21#include <linux/clocksource.h>
22#include <linux/clockchips.h>
23#include <linux/interrupt.h>
24#include <linux/irq.h>
25#include <linux/io.h>
26
27#include <asm/hardware/arm_timer.h>
28
29#include <plat/timer-sp.h>
30
31/*
32 * These timers are currently always setup to be clocked at 1MHz.
33 */
34#define TIMER_FREQ_KHZ (1000)
35#define TIMER_RELOAD (TIMER_FREQ_KHZ * 1000 / HZ)
36
37static void __iomem *clksrc_base;
38
39static cycle_t sp804_read(struct clocksource *cs)
40{
41 return ~readl(clksrc_base + TIMER_VALUE);
42}
43
44static struct clocksource clocksource_sp804 = {
45 .name = "timer3",
46 .rating = 200,
47 .read = sp804_read,
48 .mask = CLOCKSOURCE_MASK(32),
49 .shift = 20,
50 .flags = CLOCK_SOURCE_IS_CONTINUOUS,
51};
52
53void __init sp804_clocksource_init(void __iomem *base)
54{
55 struct clocksource *cs = &clocksource_sp804;
56
57 clksrc_base = base;
58
59 /* setup timer 0 as free-running clocksource */
60 writel(0, clksrc_base + TIMER_CTRL);
61 writel(0xffffffff, clksrc_base + TIMER_LOAD);
62 writel(0xffffffff, clksrc_base + TIMER_VALUE);
63 writel(TIMER_CTRL_32BIT | TIMER_CTRL_ENABLE | TIMER_CTRL_PERIODIC,
64 clksrc_base + TIMER_CTRL);
65
66 cs->mult = clocksource_khz2mult(TIMER_FREQ_KHZ, cs->shift);
67 clocksource_register(cs);
68}
69
70
71static void __iomem *clkevt_base;
72
73/*
74 * IRQ handler for the timer
75 */
76static irqreturn_t sp804_timer_interrupt(int irq, void *dev_id)
77{
78 struct clock_event_device *evt = dev_id;
79
80 /* clear the interrupt */
81 writel(1, clkevt_base + TIMER_INTCLR);
82
83 evt->event_handler(evt);
84
85 return IRQ_HANDLED;
86}
87
88static void sp804_set_mode(enum clock_event_mode mode,
89 struct clock_event_device *evt)
90{
91 unsigned long ctrl = TIMER_CTRL_32BIT | TIMER_CTRL_IE;
92
93 writel(ctrl, clkevt_base + TIMER_CTRL);
94
95 switch (mode) {
96 case CLOCK_EVT_MODE_PERIODIC:
97 writel(TIMER_RELOAD, clkevt_base + TIMER_LOAD);
98 ctrl |= TIMER_CTRL_PERIODIC | TIMER_CTRL_ENABLE;
99 break;
100
101 case CLOCK_EVT_MODE_ONESHOT:
102 /* period set, and timer enabled in 'next_event' hook */
103 ctrl |= TIMER_CTRL_ONESHOT;
104 break;
105
106 case CLOCK_EVT_MODE_UNUSED:
107 case CLOCK_EVT_MODE_SHUTDOWN:
108 default:
109 break;
110 }
111
112 writel(ctrl, clkevt_base + TIMER_CTRL);
113}
114
115static int sp804_set_next_event(unsigned long next,
116 struct clock_event_device *evt)
117{
118 unsigned long ctrl = readl(clkevt_base + TIMER_CTRL);
119
120 writel(next, clkevt_base + TIMER_LOAD);
121 writel(ctrl | TIMER_CTRL_ENABLE, clkevt_base + TIMER_CTRL);
122
123 return 0;
124}
125
126static struct clock_event_device sp804_clockevent = {
127 .name = "timer0",
128 .shift = 32,
129 .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
130 .set_mode = sp804_set_mode,
131 .set_next_event = sp804_set_next_event,
132 .rating = 300,
133 .cpumask = cpu_all_mask,
134};
135
136static struct irqaction sp804_timer_irq = {
137 .name = "timer",
138 .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
139 .handler = sp804_timer_interrupt,
140 .dev_id = &sp804_clockevent,
141};
142
143void __init sp804_clockevents_init(void __iomem *base, unsigned int timer_irq)
144{
145 struct clock_event_device *evt = &sp804_clockevent;
146
147 clkevt_base = base;
148
149 evt->irq = timer_irq;
150 evt->mult = div_sc(TIMER_FREQ_KHZ, NSEC_PER_MSEC, evt->shift);
151 evt->max_delta_ns = clockevent_delta2ns(0xffffffff, evt);
152 evt->min_delta_ns = clockevent_delta2ns(0xf, evt);
153
154 setup_irq(timer_irq, &sp804_timer_irq);
155 clockevents_register_device(evt);
156}
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