Tony Lindgren | 9839c6b | 2005-09-07 17:20:27 +0100 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/asm-arm/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 | * |
| 9 | * This program is free software; you can redistribute it and/or modify it |
| 10 | * under the terms of the GNU General Public License as published by the |
| 11 | * Free Software Foundation; either version 2 of the License, or (at your |
| 12 | * option) any later version. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 15 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 16 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 17 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 18 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 19 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 20 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 21 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License along |
| 24 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 25 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 26 | */ |
| 27 | |
| 28 | #ifndef __ASM_ARCH_TIMER_H |
| 29 | #define __ASM_ARCH_TIMER_H |
| 30 | |
| 31 | #include <linux/list.h> |
| 32 | |
| 33 | #define OMAP_TIMER_SRC_ARMXOR 0x00 |
| 34 | #define OMAP_TIMER_SRC_32_KHZ 0x01 |
| 35 | #define OMAP_TIMER_SRC_EXT_CLK 0x02 |
| 36 | |
| 37 | /* timer control reg bits */ |
| 38 | #define OMAP_TIMER_CTRL_CAPTMODE (1 << 13) |
| 39 | #define OMAP_TIMER_CTRL_PT (1 << 12) |
| 40 | #define OMAP_TIMER_CTRL_TRG_OVERFLOW (0x1 << 10) |
| 41 | #define OMAP_TIMER_CTRL_TRG_OFANDMATCH (0x2 << 10) |
| 42 | #define OMAP_TIMER_CTRL_TCM_LOWTOHIGH (0x1 << 8) |
| 43 | #define OMAP_TIMER_CTRL_TCM_HIGHTOLOW (0x2 << 8) |
| 44 | #define OMAP_TIMER_CTRL_TCM_BOTHEDGES (0x3 << 8) |
| 45 | #define OMAP_TIMER_CTRL_SCPWM (1 << 7) |
| 46 | #define OMAP_TIMER_CTRL_CE (1 << 6) /* compare enable */ |
| 47 | #define OMAP_TIMER_CTRL_PRE (1 << 5) /* prescaler enable */ |
| 48 | #define OMAP_TIMER_CTRL_PTV_SHIFT 2 /* how much to shift the prescaler value */ |
| 49 | #define OMAP_TIMER_CTRL_AR (1 << 1) /* auto-reload enable */ |
| 50 | #define OMAP_TIMER_CTRL_ST (1 << 0) /* start timer */ |
| 51 | |
| 52 | /* timer interrupt enable bits */ |
| 53 | #define OMAP_TIMER_INT_CAPTURE (1 << 2) |
| 54 | #define OMAP_TIMER_INT_OVERFLOW (1 << 1) |
| 55 | #define OMAP_TIMER_INT_MATCH (1 << 0) |
| 56 | |
| 57 | |
| 58 | struct omap_dm_timer { |
| 59 | struct list_head timer_list; |
| 60 | |
| 61 | u32 base; |
| 62 | unsigned int irq; |
| 63 | }; |
| 64 | |
| 65 | u32 omap_dm_timer_read_reg(struct omap_dm_timer *timer, int reg); |
| 66 | void omap_dm_timer_write_reg(struct omap_dm_timer *timer, int reg, u32 value); |
| 67 | |
| 68 | struct omap_dm_timer * omap_dm_timer_request(void); |
| 69 | void omap_dm_timer_free(struct omap_dm_timer *timer); |
| 70 | void omap_dm_timer_set_source(struct omap_dm_timer *timer, int source); |
| 71 | |
| 72 | void omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, unsigned int value); |
| 73 | void omap_dm_timer_set_trigger(struct omap_dm_timer *timer, unsigned int value); |
| 74 | void omap_dm_timer_enable_compare(struct omap_dm_timer *timer); |
| 75 | void omap_dm_timer_enable_autoreload(struct omap_dm_timer *timer); |
| 76 | |
| 77 | void omap_dm_timer_trigger(struct omap_dm_timer *timer); |
| 78 | void omap_dm_timer_start(struct omap_dm_timer *timer); |
| 79 | void omap_dm_timer_stop(struct omap_dm_timer *timer); |
| 80 | |
| 81 | void omap_dm_timer_set_load(struct omap_dm_timer *timer, unsigned int load); |
| 82 | void omap_dm_timer_set_match(struct omap_dm_timer *timer, unsigned int match); |
| 83 | |
| 84 | unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer); |
| 85 | void omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value); |
| 86 | |
| 87 | unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer); |
| 88 | void omap_dm_timer_reset_counter(struct omap_dm_timer *timer); |
| 89 | |
| 90 | int omap_dm_timers_active(void); |
| 91 | |
| 92 | #endif /* __ASM_ARCH_TIMER_H */ |