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Tony Lindgren9839c6b2005-09-07 17:20:27 +01001/*
Uwe Zeisbergerf30c2262006-10-03 23:01:26 +02002 * linux/include/asm-arm/arch-omap/dmtimer.h
Tony Lindgren9839c6b2005-09-07 17:20:27 +01003 *
4 * OMAP Dual-Mode Timers
5 *
6 * Copyright (C) 2005 Nokia Corporation
7 * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com>
Timo Teras77900a22006-06-26 16:16:12 -07008 * PWM and clock framwork support by Timo Teras.
Tony Lindgren9839c6b2005-09-07 17:20:27 +01009 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
16 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
18 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
Timo Teras77900a22006-06-26 16:16:12 -070029#ifndef __ASM_ARCH_DMTIMER_H
30#define __ASM_ARCH_DMTIMER_H
Tony Lindgren9839c6b2005-09-07 17:20:27 +010031
Timo Teras77900a22006-06-26 16:16:12 -070032/* clock sources */
33#define OMAP_TIMER_SRC_SYS_CLK 0x00
34#define OMAP_TIMER_SRC_32_KHZ 0x01
35#define OMAP_TIMER_SRC_EXT_CLK 0x02
Tony Lindgren9839c6b2005-09-07 17:20:27 +010036
37/* timer interrupt enable bits */
Timo Teras77900a22006-06-26 16:16:12 -070038#define OMAP_TIMER_INT_CAPTURE (1 << 2)
39#define OMAP_TIMER_INT_OVERFLOW (1 << 1)
40#define OMAP_TIMER_INT_MATCH (1 << 0)
Tony Lindgren9839c6b2005-09-07 17:20:27 +010041
Timo Teras77900a22006-06-26 16:16:12 -070042/* trigger types */
43#define OMAP_TIMER_TRIGGER_NONE 0x00
44#define OMAP_TIMER_TRIGGER_OVERFLOW 0x01
45#define OMAP_TIMER_TRIGGER_OVERFLOW_AND_COMPARE 0x02
Tony Lindgren9839c6b2005-09-07 17:20:27 +010046
Timo Teras77900a22006-06-26 16:16:12 -070047struct omap_dm_timer;
48struct clk;
Tony Lindgren9839c6b2005-09-07 17:20:27 +010049
Timo Teras77900a22006-06-26 16:16:12 -070050int omap_dm_timer_init(void);
Tony Lindgren9839c6b2005-09-07 17:20:27 +010051
Timo Teras77900a22006-06-26 16:16:12 -070052struct omap_dm_timer *omap_dm_timer_request(void);
53struct omap_dm_timer *omap_dm_timer_request_specific(int timer_id);
Tony Lindgren9839c6b2005-09-07 17:20:27 +010054void omap_dm_timer_free(struct omap_dm_timer *timer);
Timo Teras12583a72006-09-25 12:41:42 +030055void omap_dm_timer_enable(struct omap_dm_timer *timer);
56void omap_dm_timer_disable(struct omap_dm_timer *timer);
Tony Lindgren9839c6b2005-09-07 17:20:27 +010057
Timo Teras77900a22006-06-26 16:16:12 -070058int omap_dm_timer_get_irq(struct omap_dm_timer *timer);
59
60u32 omap_dm_timer_modify_idlect_mask(u32 inputmask);
61struct clk *omap_dm_timer_get_fclk(struct omap_dm_timer *timer);
Tony Lindgren9839c6b2005-09-07 17:20:27 +010062
63void omap_dm_timer_trigger(struct omap_dm_timer *timer);
64void omap_dm_timer_start(struct omap_dm_timer *timer);
65void omap_dm_timer_stop(struct omap_dm_timer *timer);
66
Timo Teras77900a22006-06-26 16:16:12 -070067void omap_dm_timer_set_source(struct omap_dm_timer *timer, int source);
68void omap_dm_timer_set_load(struct omap_dm_timer *timer, int autoreload, unsigned int value);
69void omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable, unsigned int match);
70void omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on, int toggle, int trigger);
71void omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, int prescaler);
72
73void omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, unsigned int value);
Tony Lindgren9839c6b2005-09-07 17:20:27 +010074
75unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer);
76void omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value);
Tony Lindgren9839c6b2005-09-07 17:20:27 +010077unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer);
Timo Teras83379c82006-06-26 16:16:23 -070078void omap_dm_timer_write_counter(struct omap_dm_timer *timer, unsigned int value);
Tony Lindgren9839c6b2005-09-07 17:20:27 +010079
80int omap_dm_timers_active(void);
Tony Lindgren9839c6b2005-09-07 17:20:27 +010081
Timo Teras77900a22006-06-26 16:16:12 -070082
83#endif /* __ASM_ARCH_DMTIMER_H */