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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-11-21 04:49:47 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-11-21 04:49:47 -0500
commit59136ef3c596606d3eef920dc3e0fdfa2ce52c6f (patch)
tree3f3b8ec46d57bcb61a2d794a1f21bd4df01728c9 /arch/arm/mach-clps711x
parente879c862fb81b986095ae7a4676b2281c2f97957 (diff)
parent3f1517a761905c55d1db71cb0afd359d74a76a6c (diff)
Merge branch 'restart-cleanup' into restart
Diffstat (limited to 'arch/arm/mach-clps711x')
-rw-r--r--arch/arm/mach-clps711x/Makefile2
-rw-r--r--arch/arm/mach-clps711x/common.c (renamed from arch/arm/mach-clps711x/irq.c)95
-rw-r--r--arch/arm/mach-clps711x/mm.c48
-rw-r--r--arch/arm/mach-clps711x/time.c84
4 files changed, 88 insertions, 141 deletions
diff --git a/arch/arm/mach-clps711x/Makefile b/arch/arm/mach-clps711x/Makefile
index 4a197315f0cf..f2f0256232e3 100644
--- a/arch/arm/mach-clps711x/Makefile
+++ b/arch/arm/mach-clps711x/Makefile
@@ -4,7 +4,7 @@
4 4
5# Object file lists. 5# Object file lists.
6 6
7obj-y := irq.o mm.o time.o 7obj-y := common.o
8obj-m := 8obj-m :=
9obj-n := 9obj-n :=
10obj- := 10obj- :=
diff --git a/arch/arm/mach-clps711x/irq.c b/arch/arm/mach-clps711x/common.c
index c2eceee645e3..ced2a4e406f4 100644
--- a/arch/arm/mach-clps711x/irq.c
+++ b/arch/arm/mach-clps711x/common.c
@@ -1,7 +1,9 @@
1/* 1/*
2 * linux/arch/arm/mach-clps711x/irq.c 2 * linux/arch/arm/mach-clps711x/core.c
3 * 3 *
4 * Copyright (C) 2000 Deep Blue Solutions Ltd. 4 * Core support for the CLPS711x-based machines.
5 *
6 * Copyright (C) 2001,2011 Deep Blue Solutions Ltd
5 * 7 *
6 * This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by 9 * it under the terms of the GNU General Public License as published by
@@ -17,16 +19,42 @@
17 * along with this program; if not, write to the Free Software 19 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */ 21 */
22#include <linux/kernel.h>
23#include <linux/mm.h>
20#include <linux/init.h> 24#include <linux/init.h>
21#include <linux/list.h> 25#include <linux/interrupt.h>
22#include <linux/io.h> 26#include <linux/io.h>
27#include <linux/irq.h>
28#include <linux/sched.h>
29#include <linux/timex.h>
23 30
24#include <asm/mach/irq.h> 31#include <asm/sizes.h>
25#include <mach/hardware.h> 32#include <mach/hardware.h>
26#include <asm/irq.h> 33#include <asm/irq.h>
27 34#include <asm/leds.h>
35#include <asm/pgtable.h>
36#include <asm/page.h>
37#include <asm/mach/map.h>
38#include <asm/mach/time.h>
28#include <asm/hardware/clps7111.h> 39#include <asm/hardware/clps7111.h>
29 40
41/*
42 * This maps the generic CLPS711x registers
43 */
44static struct map_desc clps711x_io_desc[] __initdata = {
45 {
46 .virtual = CLPS7111_VIRT_BASE,
47 .pfn = __phys_to_pfn(CLPS7111_PHYS_BASE),
48 .length = SZ_1M,
49 .type = MT_DEVICE
50 }
51};
52
53void __init clps711x_map_io(void)
54{
55 iotable_init(clps711x_io_desc, ARRAY_SIZE(clps711x_io_desc));
56}
57
30static void int1_mask(struct irq_data *d) 58static void int1_mask(struct irq_data *d)
31{ 59{
32 u32 intmr1; 60 u32 intmr1;
@@ -112,15 +140,15 @@ void __init clps711x_init_irq(void)
112 140
113 for (i = 0; i < NR_IRQS; i++) { 141 for (i = 0; i < NR_IRQS; i++) {
114 if (INT1_IRQS & (1 << i)) { 142 if (INT1_IRQS & (1 << i)) {
115 irq_set_chip_and_handler(i, &int1_chip, 143 irq_set_chip_and_handler(i, &int1_chip,
116 handle_level_irq); 144 handle_level_irq);
117 set_irq_flags(i, IRQF_VALID | IRQF_PROBE); 145 set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
118 } 146 }
119 if (INT2_IRQS & (1 << i)) { 147 if (INT2_IRQS & (1 << i)) {
120 irq_set_chip_and_handler(i, &int2_chip, 148 irq_set_chip_and_handler(i, &int2_chip,
121 handle_level_irq); 149 handle_level_irq);
122 set_irq_flags(i, IRQF_VALID | IRQF_PROBE); 150 set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
123 } 151 }
124 } 152 }
125 153
126 /* 154 /*
@@ -141,3 +169,54 @@ void __init clps711x_init_irq(void)
141 clps_writel(0, SYNCIO); 169 clps_writel(0, SYNCIO);
142 clps_writel(0, KBDEOI); 170 clps_writel(0, KBDEOI);
143} 171}
172
173/*
174 * gettimeoffset() returns time since last timer tick, in usecs.
175 *
176 * 'LATCH' is hwclock ticks (see CLOCK_TICK_RATE in timex.h) per jiffy.
177 * 'tick' is usecs per jiffy.
178 */
179static unsigned long clps711x_gettimeoffset(void)
180{
181 unsigned long hwticks;
182 hwticks = LATCH - (clps_readl(TC2D) & 0xffff); /* since last underflow */
183 return (hwticks * (tick_nsec / 1000)) / LATCH;
184}
185
186/*
187 * IRQ handler for the timer
188 */
189static irqreturn_t p720t_timer_interrupt(int irq, void *dev_id)
190{
191 timer_tick();
192 return IRQ_HANDLED;
193}
194
195static struct irqaction clps711x_timer_irq = {
196 .name = "CLPS711x Timer Tick",
197 .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
198 .handler = p720t_timer_interrupt,
199};
200
201static void __init clps711x_timer_init(void)
202{
203 struct timespec tv;
204 unsigned int syscon;
205
206 syscon = clps_readl(SYSCON1);
207 syscon |= SYSCON1_TC2S | SYSCON1_TC2M;
208 clps_writel(syscon, SYSCON1);
209
210 clps_writel(LATCH-1, TC2D); /* 512kHz / 100Hz - 1 */
211
212 setup_irq(IRQ_TC2OI, &clps711x_timer_irq);
213
214 tv.tv_nsec = 0;
215 tv.tv_sec = clps_readl(RTCDR);
216 do_settimeofday(&tv);
217}
218
219struct sys_timer clps711x_timer = {
220 .init = clps711x_timer_init,
221 .offset = clps711x_gettimeoffset,
222};
diff --git a/arch/arm/mach-clps711x/mm.c b/arch/arm/mach-clps711x/mm.c
deleted file mode 100644
index 986592176767..000000000000
--- a/arch/arm/mach-clps711x/mm.c
+++ /dev/null
@@ -1,48 +0,0 @@
1/*
2 * linux/arch/arm/mach-clps711x/mm.c
3 *
4 * Generic MM setup for the CLPS711x-based machines.
5 *
6 * Copyright (C) 2001 Deep Blue Solutions Ltd
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22#include <linux/kernel.h>
23#include <linux/mm.h>
24#include <linux/init.h>
25
26#include <asm/sizes.h>
27#include <mach/hardware.h>
28#include <asm/pgtable.h>
29#include <asm/page.h>
30#include <asm/mach/map.h>
31#include <asm/hardware/clps7111.h>
32
33/*
34 * This maps the generic CLPS711x registers
35 */
36static struct map_desc clps711x_io_desc[] __initdata = {
37 {
38 .virtual = CLPS7111_VIRT_BASE,
39 .pfn = __phys_to_pfn(CLPS7111_PHYS_BASE),
40 .length = SZ_1M,
41 .type = MT_DEVICE
42 }
43};
44
45void __init clps711x_map_io(void)
46{
47 iotable_init(clps711x_io_desc, ARRAY_SIZE(clps711x_io_desc));
48}
diff --git a/arch/arm/mach-clps711x/time.c b/arch/arm/mach-clps711x/time.c
deleted file mode 100644
index d581ef0bcd24..000000000000
--- a/arch/arm/mach-clps711x/time.c
+++ /dev/null
@@ -1,84 +0,0 @@
1/*
2 * linux/arch/arm/mach-clps711x/time.c
3 *
4 * Copyright (C) 2001 Deep Blue Solutions Ltd.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19#include <linux/timex.h>
20#include <linux/init.h>
21#include <linux/interrupt.h>
22#include <linux/irq.h>
23#include <linux/sched.h>
24#include <linux/io.h>
25
26#include <mach/hardware.h>
27#include <asm/irq.h>
28#include <asm/leds.h>
29#include <asm/hardware/clps7111.h>
30
31#include <asm/mach/time.h>
32
33
34/*
35 * gettimeoffset() returns time since last timer tick, in usecs.
36 *
37 * 'LATCH' is hwclock ticks (see CLOCK_TICK_RATE in timex.h) per jiffy.
38 * 'tick' is usecs per jiffy.
39 */
40static unsigned long clps711x_gettimeoffset(void)
41{
42 unsigned long hwticks;
43 hwticks = LATCH - (clps_readl(TC2D) & 0xffff); /* since last underflow */
44 return (hwticks * (tick_nsec / 1000)) / LATCH;
45}
46
47/*
48 * IRQ handler for the timer
49 */
50static irqreturn_t
51p720t_timer_interrupt(int irq, void *dev_id)
52{
53 timer_tick();
54 return IRQ_HANDLED;
55}
56
57static struct irqaction clps711x_timer_irq = {
58 .name = "CLPS711x Timer Tick",
59 .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
60 .handler = p720t_timer_interrupt,
61};
62
63static void __init clps711x_timer_init(void)
64{
65 struct timespec tv;
66 unsigned int syscon;
67
68 syscon = clps_readl(SYSCON1);
69 syscon |= SYSCON1_TC2S | SYSCON1_TC2M;
70 clps_writel(syscon, SYSCON1);
71
72 clps_writel(LATCH-1, TC2D); /* 512kHz / 100Hz - 1 */
73
74 setup_irq(IRQ_TC2OI, &clps711x_timer_irq);
75
76 tv.tv_nsec = 0;
77 tv.tv_sec = clps_readl(RTCDR);
78 do_settimeofday(&tv);
79}
80
81struct sys_timer clps711x_timer = {
82 .init = clps711x_timer_init,
83 .offset = clps711x_gettimeoffset,
84};