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-rw-r--r--arch/h8300/kernel/timer/Makefile6
-rw-r--r--arch/h8300/kernel/timer/itu.c83
-rw-r--r--arch/h8300/kernel/timer/timer16.c78
-rw-r--r--arch/h8300/kernel/timer/timer8.c103
-rw-r--r--arch/h8300/kernel/timer/tpu.c102
-rw-r--r--include/asm-h8300/timer.h25
6 files changed, 397 insertions, 0 deletions
diff --git a/arch/h8300/kernel/timer/Makefile b/arch/h8300/kernel/timer/Makefile
new file mode 100644
index 000000000000..bef0510ea6ad
--- /dev/null
+++ b/arch/h8300/kernel/timer/Makefile
@@ -0,0 +1,6 @@
1# h8300 internal timer handler
2
3obj-$(CONFIG_H8300_TIMER8) := timer8.o
4obj-$(CONFIG_H8300_TIMER16) := timer16.o
5obj-$(CONFIG_H8300_ITU) := itu.o
6obj-$(CONFIG_H8300_TPU) := tpu.o
diff --git a/arch/h8300/kernel/timer/itu.c b/arch/h8300/kernel/timer/itu.c
new file mode 100644
index 000000000000..d1c926596b08
--- /dev/null
+++ b/arch/h8300/kernel/timer/itu.c
@@ -0,0 +1,83 @@
1/*
2 * linux/arch/h8300/kernel/timer/itu.c
3 *
4 * Yoshinori Sato <ysato@users.sourcefoge.jp>
5 *
6 * ITU Timer Handler
7 *
8 */
9
10#include <linux/errno.h>
11#include <linux/sched.h>
12#include <linux/kernel.h>
13#include <linux/param.h>
14#include <linux/string.h>
15#include <linux/mm.h>
16#include <linux/interrupt.h>
17#include <linux/init.h>
18#include <linux/timex.h>
19
20#include <asm/segment.h>
21#include <asm/io.h>
22#include <asm/irq.h>
23#include <asm/regs306x.h>
24
25#if CONFIG_H8300_ITU_CH == 0
26#define ITUBASE 0xffff64
27#define ITUIRQ 24
28#elif CONFIG_H8300_ITU_CH == 1
29#define ITUBASE 0xffff6e
30#define ITUIRQ 28
31#elif CONFIG_H8300_ITU_CH == 2
32#define ITUBASE 0xffff78
33#define ITUIRQ 32
34#elif CONFIG_H8300_ITU_CH == 3
35#define ITUBASE 0xffff82
36#define ITUIRQ 36
37#elif CONFIG_H8300_ITU_CH == 4
38#define ITUBASE 0xffff92
39#define ITUIRQ 40
40#else
41#error Unknown timer channel.
42#endif
43
44#define TCR 0
45#define TIOR 1
46#define TIER 2
47#define TSR 3
48#define TCNT 4
49#define GRA 6
50#define GRB 8
51
52static irqreturn_t timer_interrupt(int irq, void *dev_id)
53{
54 h8300_timer_tick();
55 ctrl_bclr(IMFA, ITUBASE + TSR);
56 return IRQ_HANDLED;
57}
58
59static struct irqaction itu_irq = {
60 .name = "itu",
61 .handler = timer_interrupt,
62 .flags = IRQF_DISABLED | IRQF_TIMER,
63 .mask = CPU_MASK_NONE,
64};
65
66static const int __initdata divide_rate[] = {1, 2, 4, 8};
67
68void __init h8300_timer_setup(void)
69{
70 unsigned int div;
71 unsigned int cnt;
72
73 calc_param(cnt, div, divide_rate, 0x10000);
74
75 setup_irq(ITUIRQ, &itu_irq);
76
77 /* initalize timer */
78 ctrl_outb(0, TSTR);
79 ctrl_outb(CCLR0 | div, ITUBASE + TCR);
80 ctrl_outb(0x01, ITUBASE + TIER);
81 ctrl_outw(cnt, ITUBASE + GRA);
82 ctrl_bset(CONFIG_H8300_ITU_CH, TSTR);
83}
diff --git a/arch/h8300/kernel/timer/timer16.c b/arch/h8300/kernel/timer/timer16.c
new file mode 100644
index 000000000000..e14271b72119
--- /dev/null
+++ b/arch/h8300/kernel/timer/timer16.c
@@ -0,0 +1,78 @@
1/*
2 * linux/arch/h8300/kernel/timer/timer16.c
3 *
4 * Yoshinori Sato <ysato@users.sourcefoge.jp>
5 *
6 * 16bit Timer Handler
7 *
8 */
9
10#include <linux/errno.h>
11#include <linux/sched.h>
12#include <linux/kernel.h>
13#include <linux/param.h>
14#include <linux/string.h>
15#include <linux/mm.h>
16#include <linux/interrupt.h>
17#include <linux/init.h>
18#include <linux/timex.h>
19
20#include <asm/segment.h>
21#include <asm/io.h>
22#include <asm/irq.h>
23#include <asm/regs306x.h>
24
25/* 16bit timer */
26#if CONFIG_H8300_TIMER16_CH == 0
27#define _16BASE 0xffff78
28#define _16IRQ 24
29#elif CONFIG_H8300_TIMER16_CH == 1
30#define _16BASE 0xffff80
31#define _16IRQ 28
32#elif CONFIG_H8300_TIMER16_CH == 2
33#define _16BASE 0xffff88
34#define _16IRQ 32
35#else
36#error Unknown timer channel.
37#endif
38
39#define TCR 0
40#define TIOR 1
41#define TCNT 2
42#define GRA 4
43#define GRB 6
44
45#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*10000 /* Timer input freq. */
46
47static irqreturn_t timer_interrupt(int irq, void *dev_id)
48{
49 h8300_timer_tick();
50 ctrl_bclr(CONFIG_H8300_TIMER16_CH, TISRA);
51 return IRQ_HANDLED;
52}
53
54static struct irqaction timer16_irq = {
55 .name = "timer-16",
56 .handler = timer_interrupt,
57 .flags = IRQF_DISABLED | IRQF_TIMER,
58 .mask = CPU_MASK_NONE,
59};
60
61static const int __initdata divide_rate[] = {1, 2, 4, 8};
62
63void __init h8300_timer_setup(void)
64{
65 unsigned int div;
66 unsigned int cnt;
67
68 calc_param(cnt, div, divide_rate, 0x10000);
69
70 setup_irq(_16IRQ, &timer16_irq);
71
72 /* initalize timer */
73 ctrl_outb(0, TSTR);
74 ctrl_outb(CCLR0 | div, _16BASE + TCR);
75 ctrl_outw(cnt, _16BASE + GRA);
76 ctrl_bset(4 + CONFIG_H8300_TIMER16_CH, TISRA);
77 ctrl_bset(CONFIG_H8300_TIMER16_CH, TSTR);
78}
diff --git a/arch/h8300/kernel/timer/timer8.c b/arch/h8300/kernel/timer/timer8.c
new file mode 100644
index 000000000000..0556d7c7bea6
--- /dev/null
+++ b/arch/h8300/kernel/timer/timer8.c
@@ -0,0 +1,103 @@
1/*
2 * linux/arch/h8300/kernel/cpu/timer/timer8.c
3 *
4 * Yoshinori Sato <ysato@users.sourcefoge.jp>
5 *
6 * 8bit Timer Handler
7 *
8 */
9
10#include <linux/errno.h>
11#include <linux/sched.h>
12#include <linux/kernel.h>
13#include <linux/param.h>
14#include <linux/string.h>
15#include <linux/mm.h>
16#include <linux/interrupt.h>
17#include <linux/init.h>
18#include <linux/profile.h>
19
20#include <asm/io.h>
21#include <asm/irq.h>
22#include <asm/timer.h>
23#if defined(CONFIG_CPU_H8300H)
24#include <asm/regs306x.h>
25#endif
26#if defined(CONFIG_CPU_H8S)
27#include <asm/regs267x.h>
28#endif
29
30/* 8bit timer x2 */
31#define CMFA 6
32
33#if defined(CONFIG_H8300_TIMER8_CH0)
34#define _8BASE _8TCR0
35#ifdef CONFIG_CPU_H8300H
36#define _8IRQ 36
37#endif
38#ifdef CONFIG_CPU_H8S
39#define _8IRQ 72
40#endif
41#elif defined(CONFIG_H8300_TIMER8_CH2)
42#ifdef CONFIG_CPU_H8300H
43#define _8BASE _8TCR2
44#define _8IRQ 40
45#endif
46#endif
47
48#ifndef _8BASE
49#error Unknown timer channel.
50#endif
51
52#define _8TCR 0
53#define _8TCSR 2
54#define TCORA 4
55#define TCORB 6
56#define _8TCNT 8
57
58#define CMIEA 0x40
59#define CCLR_CMA 0x08
60#define CKS2 0x04
61
62/*
63 * timer_interrupt() needs to keep up the real-time clock,
64 * as well as call the "do_timer()" routine every clocktick
65 */
66
67static irqreturn_t timer_interrupt(int irq, void *dev_id)
68{
69 h8300_timer_tick();
70 ctrl_bclr(CMFA, _8BASE + _8TCSR);
71 return IRQ_HANDLED;
72}
73
74static struct irqaction timer8_irq = {
75 .name = "timer-8",
76 .handler = timer_interrupt,
77 .flags = IRQF_DISABLED | IRQF_TIMER,
78 .mask = CPU_MASK_NONE,
79};
80
81static const int __initdata divide_rate[] = {8, 64, 8192};
82
83void __init h8300_timer_setup(void)
84{
85 unsigned int div;
86 unsigned int cnt;
87
88 calc_param(cnt, div, divide_rate, 0x10000);
89 div++;
90
91 setup_irq(_8IRQ, &timer8_irq);
92
93#if defined(CONFIG_CPU_H8S)
94 /* Timer module enable */
95 ctrl_bclr(0, MSTPCRL)
96#endif
97
98 /* initalize timer */
99 ctrl_outw(cnt, _8BASE + TCORA);
100 ctrl_outw(0x0000, _8BASE + _8TCSR);
101 ctrl_outw((CMIEA|CCLR_CMA|CKS2) << 8 | div,
102 _8BASE + _8TCR);
103}
diff --git a/arch/h8300/kernel/timer/tpu.c b/arch/h8300/kernel/timer/tpu.c
new file mode 100644
index 000000000000..df7f453a9673
--- /dev/null
+++ b/arch/h8300/kernel/timer/tpu.c
@@ -0,0 +1,102 @@
1/*
2 * linux/arch/h8300/kernel/timer/tpu.c
3 *
4 * Yoshinori Sato <ysato@users.sourceforge.jp>
5 *
6 * TPU Timer Handler
7 *
8 */
9
10#include <linux/config.h>
11#include <linux/errno.h>
12#include <linux/sched.h>
13#include <linux/kernel.h>
14#include <linux/param.h>
15#include <linux/string.h>
16#include <linux/mm.h>
17#include <linux/interrupt.h>
18#include <linux/init.h>
19#include <linux/timex.h>
20
21#include <asm/segment.h>
22#include <asm/io.h>
23#include <asm/irq.h>
24#include <asm/regs267x.h>
25
26/* TPU */
27#if CONFIG_H8300_TPU_CH == 0
28#define TPUBASE 0xffffd0
29#define TPUIRQ 40
30#elif CONFIG_H8300_TPU_CH == 1
31#define TPUBASE 0xffffe0
32#define TPUIRQ 48
33#elif CONFIG_H8300_TPU_CH == 2
34#define TPUBASE 0xfffff0
35#define TPUIRQ 52
36#elif CONFIG_H8300_TPU_CH == 3
37#define TPUBASE 0xfffe80
38#define TPUIRQ 56
39#elif CONFIG_H8300_TPU_CH == 4
40#define TPUBASE 0xfffe90
41#define TPUIRQ 64
42#else
43#error Unknown timer channel.
44#endif
45
46#define _TCR 0
47#define _TMDR 1
48#define _TIOR 2
49#define _TIER 4
50#define _TSR 5
51#define _TCNT 6
52#define _GRA 8
53#define _GRB 10
54
55#define CCLR0 0x20
56
57static irqreturn_t timer_interrupt(int irq, void *dev_id)
58{
59 h8300_timer_tick();
60 ctrl_bclr(0, TPUBASE + _TSR);
61 return IRQ_HANDLED;
62}
63
64static struct irqaction tpu_irq = {
65 .name = "tpu",
66 .handler = timer_interrupt,
67 .flags = IRQF_DISABLED | IRQF_TIMER,
68 .mask = CPU_MASK_NONE,
69};
70
71const static int __initdata divide_rate[] = {
72#if CONFIG_H8300_TPU_CH == 0
73 1,4,16,64,0,0,0,0,
74#elif (CONFIG_H8300_TPU_CH == 1) || (CONFIG_H8300_TPU_CH == 5)
75 1,4,16,64,0,0,256,0,
76#elif (CONFIG_H8300_TPU_CH == 2) || (CONFIG_H8300_TPU_CH == 4)
77 1,4,16,64,0,0,0,1024,
78#elif CONFIG_H8300_TPU_CH == 3
79 1,4,16,64,0,1024,256,4096,
80#endif
81};
82
83void __init h8300_timer_setup(void)
84{
85 unsigned int cnt;
86 unsigned int div;
87
88 calc_param(cnt, div, divide_rate, 0x10000);
89
90 setup_irq(TPUIRQ, &tpu_irq);
91
92 /* TPU module enabled */
93 ctrl_bclr(3, MSTPCRH);
94
95 ctrl_outb(0, TSTR);
96 ctrl_outb(CCLR0 | div, TPUBASE + _TCR);
97 ctrl_outb(0, TPUBASE + _TMDR);
98 ctrl_outw(0, TPUBASE + _TIOR);
99 ctrl_outb(0x01, TPUBASE + _TIER);
100 ctrl_outw(cnt, TPUBASE + _GRA);
101 ctrl_bset(CONFIG_H8300_TPU_CH, TSTR);
102}
diff --git a/include/asm-h8300/timer.h b/include/asm-h8300/timer.h
new file mode 100644
index 000000000000..def80464d38f
--- /dev/null
+++ b/include/asm-h8300/timer.h
@@ -0,0 +1,25 @@
1#ifndef __H8300_TIMER_H
2#define __H8300_TIMER_H
3
4void h8300_timer_tick(void);
5void h8300_timer_setup(void);
6void h8300_gettod(unsigned int *year, unsigned int *mon, unsigned int *day,
7 unsigned int *hour, unsigned int *min, unsigned int *sec);
8
9#define TIMER_FREQ (CONFIG_CPU_CLOCK*10000) /* Timer input freq. */
10
11#define calc_param(cnt, div, rate, limit) \
12do { \
13 cnt = TIMER_FREQ / HZ; \
14 for (div = 0; div < ARRAY_SIZE(divide_rate); div++) { \
15 if (rate[div] == 0) \
16 continue; \
17 if ((cnt / rate[div]) > limit) \
18 break; \
19 } \
20 if (div == ARRAY_SIZE(divide_rate)) \
21 panic("Timer counter overflow"); \
22 cnt /= divide_rate[div]; \
23} while(0)
24
25#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-04 13:29:10 -0500