diff options
author | Kevin Hilman <khilman@mvista.com> | 2007-11-13 02:24:05 -0500 |
---|---|---|
committer | Tony Lindgren <tony@atomide.com> | 2008-04-14 12:57:12 -0400 |
commit | a57fb870c8c4864031d7568f91e882e93238c9cb (patch) | |
tree | f6b902a2d4db8658c37034cbffe7eb53623bda7f /arch/arm/plat-omap | |
parent | f258b0c6fa6ca653c7f4e6e2846dbb7ed3af3446 (diff) |
ARM: OMAP: Timer32K: Move timer32k to mach-omap1
Move now OMAP1-specific timer32k code to mach-omap1 since OMAP2/3 32k
timers are done in gptimer code.
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/plat-omap')
-rw-r--r-- | arch/arm/plat-omap/Makefile | 4 | ||||
-rw-r--r-- | arch/arm/plat-omap/timer32k.c | 201 |
2 files changed, 0 insertions, 205 deletions
diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile index d91424edf576..bc639a30d6d1 100644 --- a/arch/arm/plat-omap/Makefile +++ b/arch/arm/plat-omap/Makefile | |||
@@ -9,10 +9,6 @@ obj-m := | |||
9 | obj-n := | 9 | obj-n := |
10 | obj- := | 10 | obj- := |
11 | 11 | ||
12 | ifeq ($(CONFIG_ARCH_OMAP1),y) | ||
13 | obj-$(CONFIG_OMAP_32K_TIMER) += timer32k.o | ||
14 | endif | ||
15 | |||
16 | # OCPI interconnect support for 1710, 1610 and 5912 | 12 | # OCPI interconnect support for 1710, 1610 and 5912 |
17 | obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o | 13 | obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o |
18 | 14 | ||
diff --git a/arch/arm/plat-omap/timer32k.c b/arch/arm/plat-omap/timer32k.c deleted file mode 100644 index 1f7365f5df24..000000000000 --- a/arch/arm/plat-omap/timer32k.c +++ /dev/null | |||
@@ -1,201 +0,0 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/plat-omap/timer32k.c | ||
3 | * | ||
4 | * OMAP 32K Timer | ||
5 | * | ||
6 | * Copyright (C) 2004 - 2005 Nokia Corporation | ||
7 | * Partial timer rewrite and additional dynamic tick timer support by | ||
8 | * Tony Lindgen <tony@atomide.com> and | ||
9 | * Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com> | ||
10 | * OMAP Dual-mode timer framework support by Timo Teras | ||
11 | * | ||
12 | * MPU timer code based on the older MPU timer code for OMAP | ||
13 | * Copyright (C) 2000 RidgeRun, Inc. | ||
14 | * Author: Greg Lonnon <glonnon@ridgerun.com> | ||
15 | * | ||
16 | * This program is free software; you can redistribute it and/or modify it | ||
17 | * under the terms of the GNU General Public License as published by the | ||
18 | * Free Software Foundation; either version 2 of the License, or (at your | ||
19 | * option) any later version. | ||
20 | * | ||
21 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | ||
22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | ||
23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | ||
24 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
25 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
26 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | ||
27 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | ||
28 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||
30 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
31 | * | ||
32 | * You should have received a copy of the GNU General Public License along | ||
33 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
34 | * 675 Mass Ave, Cambridge, MA 02139, USA. | ||
35 | */ | ||
36 | |||
37 | #include <linux/kernel.h> | ||
38 | #include <linux/init.h> | ||
39 | #include <linux/delay.h> | ||
40 | #include <linux/interrupt.h> | ||
41 | #include <linux/sched.h> | ||
42 | #include <linux/spinlock.h> | ||
43 | |||
44 | #include <linux/err.h> | ||
45 | #include <linux/clk.h> | ||
46 | #include <linux/clocksource.h> | ||
47 | #include <linux/clockchips.h> | ||
48 | |||
49 | #include <asm/system.h> | ||
50 | #include <asm/hardware.h> | ||
51 | #include <asm/io.h> | ||
52 | #include <asm/leds.h> | ||
53 | #include <asm/irq.h> | ||
54 | #include <asm/mach/irq.h> | ||
55 | #include <asm/mach/time.h> | ||
56 | #include <asm/arch/dmtimer.h> | ||
57 | |||
58 | struct sys_timer omap_timer; | ||
59 | |||
60 | /* | ||
61 | * --------------------------------------------------------------------------- | ||
62 | * 32KHz OS timer | ||
63 | * | ||
64 | * This currently works only on 16xx, as 1510 does not have the continuous | ||
65 | * 32KHz synchronous timer. The 32KHz synchronous timer is used to keep track | ||
66 | * of time in addition to the 32KHz OS timer. Using only the 32KHz OS timer | ||
67 | * on 1510 would be possible, but the timer would not be as accurate as | ||
68 | * with the 32KHz synchronized timer. | ||
69 | * --------------------------------------------------------------------------- | ||
70 | */ | ||
71 | |||
72 | #if defined(CONFIG_ARCH_OMAP16XX) | ||
73 | #define TIMER_32K_SYNCHRONIZED 0xfffbc410 | ||
74 | #elif defined(CONFIG_ARCH_OMAP24XX) | ||
75 | #define TIMER_32K_SYNCHRONIZED (OMAP24XX_32KSYNCT_BASE + 0x10) | ||
76 | #else | ||
77 | #error OMAP 32KHz timer does not currently work on 15XX! | ||
78 | #endif | ||
79 | |||
80 | /* 16xx specific defines */ | ||
81 | #define OMAP1_32K_TIMER_BASE 0xfffb9000 | ||
82 | #define OMAP1_32K_TIMER_CR 0x08 | ||
83 | #define OMAP1_32K_TIMER_TVR 0x00 | ||
84 | #define OMAP1_32K_TIMER_TCR 0x04 | ||
85 | |||
86 | #define OMAP_32K_TICKS_PER_SEC (32768) | ||
87 | |||
88 | /* | ||
89 | * TRM says 1 / HZ = ( TVR + 1) / 32768, so TRV = (32768 / HZ) - 1 | ||
90 | * so with HZ = 128, TVR = 255. | ||
91 | */ | ||
92 | #define OMAP_32K_TIMER_TICK_PERIOD ((OMAP_32K_TICKS_PER_SEC / HZ) - 1) | ||
93 | |||
94 | #define JIFFIES_TO_HW_TICKS(nr_jiffies, clock_rate) \ | ||
95 | (((nr_jiffies) * (clock_rate)) / HZ) | ||
96 | |||
97 | static inline void omap_32k_timer_write(int val, int reg) | ||
98 | { | ||
99 | omap_writew(val, OMAP1_32K_TIMER_BASE + reg); | ||
100 | } | ||
101 | |||
102 | static inline unsigned long omap_32k_timer_read(int reg) | ||
103 | { | ||
104 | return omap_readl(OMAP1_32K_TIMER_BASE + reg) & 0xffffff; | ||
105 | } | ||
106 | |||
107 | static inline void omap_32k_timer_start(unsigned long load_val) | ||
108 | { | ||
109 | if (!load_val) | ||
110 | load_val = 1; | ||
111 | omap_32k_timer_write(load_val, OMAP1_32K_TIMER_TVR); | ||
112 | omap_32k_timer_write(0x0f, OMAP1_32K_TIMER_CR); | ||
113 | } | ||
114 | |||
115 | static inline void omap_32k_timer_stop(void) | ||
116 | { | ||
117 | omap_32k_timer_write(0x0, OMAP1_32K_TIMER_CR); | ||
118 | } | ||
119 | |||
120 | #define omap_32k_timer_ack_irq() | ||
121 | |||
122 | static void omap_32k_timer_set_mode(enum clock_event_mode mode, | ||
123 | struct clock_event_device *evt) | ||
124 | { | ||
125 | omap_32k_timer_stop(); | ||
126 | |||
127 | switch (mode) { | ||
128 | case CLOCK_EVT_MODE_PERIODIC: | ||
129 | omap_32k_timer_start(OMAP_32K_TIMER_TICK_PERIOD); | ||
130 | break; | ||
131 | case CLOCK_EVT_MODE_ONESHOT: | ||
132 | case CLOCK_EVT_MODE_UNUSED: | ||
133 | case CLOCK_EVT_MODE_SHUTDOWN: | ||
134 | break; | ||
135 | case CLOCK_EVT_MODE_RESUME: | ||
136 | break; | ||
137 | } | ||
138 | } | ||
139 | |||
140 | static struct clock_event_device clockevent_32k_timer = { | ||
141 | .name = "32k-timer", | ||
142 | .features = CLOCK_EVT_FEAT_PERIODIC, | ||
143 | .shift = 32, | ||
144 | .set_mode = omap_32k_timer_set_mode, | ||
145 | }; | ||
146 | |||
147 | /* | ||
148 | * The 32KHz synchronized timer is an additional timer on 16xx. | ||
149 | * It is always running. | ||
150 | */ | ||
151 | static inline unsigned long omap_32k_sync_timer_read(void) | ||
152 | { | ||
153 | return omap_readl(TIMER_32K_SYNCHRONIZED); | ||
154 | } | ||
155 | |||
156 | static irqreturn_t omap_32k_timer_interrupt(int irq, void *dev_id) | ||
157 | { | ||
158 | struct clock_event_device *evt = &clockevent_32k_timer; | ||
159 | omap_32k_timer_ack_irq(); | ||
160 | |||
161 | evt->event_handler(evt); | ||
162 | |||
163 | return IRQ_HANDLED; | ||
164 | } | ||
165 | |||
166 | static struct irqaction omap_32k_timer_irq = { | ||
167 | .name = "32KHz timer", | ||
168 | .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, | ||
169 | .handler = omap_32k_timer_interrupt, | ||
170 | }; | ||
171 | |||
172 | static __init void omap_init_32k_timer(void) | ||
173 | { | ||
174 | clockevent_32k_timer.mult = div_sc(OMAP_32K_TICKS_PER_SEC, | ||
175 | NSEC_PER_SEC, | ||
176 | clockevent_32k_timer.shift); | ||
177 | clockevent_32k_timer.max_delta_ns = | ||
178 | clockevent_delta2ns(0xfffffffe, &clockevent_32k_timer); | ||
179 | clockevent_32k_timer.min_delta_ns = | ||
180 | clockevent_delta2ns(1, &clockevent_32k_timer); | ||
181 | |||
182 | clockevent_32k_timer.cpumask = cpumask_of_cpu(0); | ||
183 | clockevents_register_device(&clockevent_32k_timer); | ||
184 | } | ||
185 | |||
186 | /* | ||
187 | * --------------------------------------------------------------------------- | ||
188 | * Timer initialization | ||
189 | * --------------------------------------------------------------------------- | ||
190 | */ | ||
191 | static void __init omap_timer_init(void) | ||
192 | { | ||
193 | #ifdef CONFIG_OMAP_DM_TIMER | ||
194 | omap_dm_timer_init(); | ||
195 | #endif | ||
196 | omap_init_32k_timer(); | ||
197 | } | ||
198 | |||
199 | struct sys_timer omap_timer = { | ||
200 | .init = omap_timer_init, | ||
201 | }; | ||