include/asm-arm/arch-omap/dmtimer.h

   1 /*
   2  * linux/include/asm-arm/arch-omap/dmtimer.h
   3  *
   4  * OMAP Dual-Mode Timers
   5  *
   6  * Copyright (C) 2005 Nokia Corporation
   7  * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com>
   8  * PWM and clock framwork support by Timo Teras.
   9  *
  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
  29 #ifndef __ASM_ARCH_DMTIMER_H
  30 #define __ASM_ARCH_DMTIMER_H
  31
  32 /* 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
  36
  37 /* timer interrupt enable bits */
  38 #define OMAP_TIMER_INT_CAPTURE                  (1 << 2)
  39 #define OMAP_TIMER_INT_OVERFLOW                 (1 << 1)
  40 #define OMAP_TIMER_INT_MATCH                    (1 << 0)
  41
  42 /* 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
  46
  47 struct omap_dm_timer;
  48 struct clk;
  49
  50 int omap_dm_timer_init(void);
  51
  52 struct omap_dm_timer *omap_dm_timer_request(void);
  53 struct omap_dm_timer *omap_dm_timer_request_specific(int timer_id);
  54 void omap_dm_timer_free(struct omap_dm_timer *timer);
  55 void omap_dm_timer_enable(struct omap_dm_timer *timer);
  56 void omap_dm_timer_disable(struct omap_dm_timer *timer);
  57
  58 int omap_dm_timer_get_irq(struct omap_dm_timer *timer);
  59
  60 u32 omap_dm_timer_modify_idlect_mask(u32 inputmask);
  61 struct clk *omap_dm_timer_get_fclk(struct omap_dm_timer *timer);
  62
  63 void omap_dm_timer_trigger(struct omap_dm_timer *timer);
  64 void omap_dm_timer_start(struct omap_dm_timer *timer);
  65 void omap_dm_timer_stop(struct omap_dm_timer *timer);
  66
  67 void omap_dm_timer_set_source(struct omap_dm_timer *timer, int source);
  68 void omap_dm_timer_set_load(struct omap_dm_timer *timer, int autoreload, unsigned int value);
  69 void omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable, unsigned int match);
  70 void omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on, int toggle, int trigger);
  71 void omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, int prescaler);
  72
  73 void omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, unsigned int value);
  74
  75 unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer);
  76 void omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value);
  77 unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer);
  78 void omap_dm_timer_write_counter(struct omap_dm_timer *timer, unsigned int value);
  79
  80 int omap_dm_timers_active(void);
  81
  82
  83 #endif /* __ASM_ARCH_DMTIMER_H */