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Commit e0b0f9e4ead2468f84c26332ec42b118e76af572

Authored by Yoshinori Sato
Committed by Linus Torvalds
1 parent 4b6aba51fb
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

h8300: update timer handler - new files 

New timer handler files.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Showing 6 changed files with 397 additions and 0 deletions Inline Diff

arch/h8300/kernel/timer/Makefile
Diff comments   View file @ e0b0f9e
File was created 1 # h8300 internal timer handler
2
3 obj-$(CONFIG_H8300_TIMER8) := timer8.o
4 obj-$(CONFIG_H8300_TIMER16) := timer16.o
5 obj-$(CONFIG_H8300_ITU) := itu.o
6 obj-$(CONFIG_H8300_TPU) := tpu.o
7
arch/h8300/kernel/timer/itu.c
Diff comments   View file @ e0b0f9e
File was created 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
52 static 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
59 static struct irqaction itu_irq = {
60 .name = "itu",
61 .handler = timer_interrupt,
62 .flags = IRQF_DISABLED | IRQF_TIMER,
63 .mask = CPU_MASK_NONE,
64 };
65
66 static const int __initdata divide_rate[] = {1, 2, 4, 8};
67
68 void __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 }
84
arch/h8300/kernel/timer/timer16.c
Diff comments   View file @ e0b0f9e
File was created 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
47 static 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
54 static 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
61 static const int __initdata divide_rate[] = {1, 2, 4, 8};
62
63 void __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 }
79
arch/h8300/kernel/timer/timer8.c
Diff comments   View file @ e0b0f9e
File was created 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
67 static 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
74 static 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
81 static const int __initdata divide_rate[] = {8, 64, 8192};
82
83 void __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 }
104
arch/h8300/kernel/timer/tpu.c
Diff comments   View file @ e0b0f9e
File was created 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
57 static 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
64 static struct irqaction tpu_irq = {
65 .name = "tpu",
66 .handler = timer_interrupt,
67 .flags = IRQF_DISABLED | IRQF_TIMER,
68 .mask = CPU_MASK_NONE,
69 };
70
71 const 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
83 void __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 }
103
include/asm-h8300/timer.h
Diff comments   View file @ e0b0f9e
File was created 1 #ifndef __H8300_TIMER_H
2 #define __H8300_TIMER_H
3
4 void h8300_timer_tick(void);
5 void h8300_timer_setup(void);
6 void 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) \
12 do { \
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
26