diff options
Diffstat (limited to 'include/asm-arm/arch-omap/dmtimer.h')
| -rw-r--r-- | include/asm-arm/arch-omap/dmtimer.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/include/asm-arm/arch-omap/dmtimer.h b/include/asm-arm/arch-omap/dmtimer.h new file mode 100644 index 00000000000..11772c792f3 --- /dev/null +++ b/include/asm-arm/arch-omap/dmtimer.h @@ -0,0 +1,92 @@ +/* + * linux/include/asm-arm/arm/arch-omap/dmtimer.h + * + * OMAP Dual-Mode Timers + * + * Copyright (C) 2005 Nokia Corporation + * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __ASM_ARCH_TIMER_H +#define __ASM_ARCH_TIMER_H + +#include <linux/list.h> + +#define OMAP_TIMER_SRC_ARMXOR 0x00 +#define OMAP_TIMER_SRC_32_KHZ 0x01 +#define OMAP_TIMER_SRC_EXT_CLK 0x02 + +/* timer control reg bits */ +#define OMAP_TIMER_CTRL_CAPTMODE (1 << 13) +#define OMAP_TIMER_CTRL_PT (1 << 12) +#define OMAP_TIMER_CTRL_TRG_OVERFLOW (0x1 << 10) +#define OMAP_TIMER_CTRL_TRG_OFANDMATCH (0x2 << 10) +#define OMAP_TIMER_CTRL_TCM_LOWTOHIGH (0x1 << 8) +#define OMAP_TIMER_CTRL_TCM_HIGHTOLOW (0x2 << 8) +#define OMAP_TIMER_CTRL_TCM_BOTHEDGES (0x3 << 8) +#define OMAP_TIMER_CTRL_SCPWM (1 << 7) +#define OMAP_TIMER_CTRL_CE (1 << 6) /* compare enable */ +#define OMAP_TIMER_CTRL_PRE (1 << 5) /* prescaler enable */ +#define OMAP_TIMER_CTRL_PTV_SHIFT 2 /* how much to shift the prescaler value */ +#define OMAP_TIMER_CTRL_AR (1 << 1) /* auto-reload enable */ +#define OMAP_TIMER_CTRL_ST (1 << 0) /* start timer */ + +/* timer interrupt enable bits */ +#define OMAP_TIMER_INT_CAPTURE (1 << 2) +#define OMAP_TIMER_INT_OVERFLOW (1 << 1) +#define OMAP_TIMER_INT_MATCH (1 << 0) + + +struct omap_dm_timer { + struct list_head timer_list; + + u32 base; + unsigned int irq; +}; + +u32 omap_dm_timer_read_reg(struct omap_dm_timer *timer, int reg); +void omap_dm_timer_write_reg(struct omap_dm_timer *timer, int reg, u32 value); + +struct omap_dm_timer * omap_dm_timer_request(void); +void omap_dm_timer_free(struct omap_dm_timer *timer); +void omap_dm_timer_set_source(struct omap_dm_timer *timer, int source); + +void omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, unsigned int value); +void omap_dm_timer_set_trigger(struct omap_dm_timer *timer, unsigned int value); +void omap_dm_timer_enable_compare(struct omap_dm_timer *timer); +void omap_dm_timer_enable_autoreload(struct omap_dm_timer *timer); + +void omap_dm_timer_trigger(struct omap_dm_timer *timer); +void omap_dm_timer_start(struct omap_dm_timer *timer); +void omap_dm_timer_stop(struct omap_dm_timer *timer); + +void omap_dm_timer_set_load(struct omap_dm_timer *timer, unsigned int load); +void omap_dm_timer_set_match(struct omap_dm_timer *timer, unsigned int match); + +unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer); +void omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value); + +unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer); +void omap_dm_timer_reset_counter(struct omap_dm_timer *timer); + +int omap_dm_timers_active(void); + +#endif /* __ASM_ARCH_TIMER_H */ |