1/*
2 * OMAP Dual-Mode Timers
3 *
4 * Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/
5 * Tarun Kanti DebBarma <tarun.kanti@ti.com>
6 * Thara Gopinath <thara@ti.com>
7 *
8 * Platform device conversion and hwmod support.
9 *
10 * Copyright (C) 2005 Nokia Corporation
11 * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com>
12 * PWM and clock framwork support by Timo Teras.
13 *
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the
16 * Free Software Foundation; either version 2 of the License, or (at your
17 * option) any later version.
18 *
19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
20 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
22 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * You should have received a copy of the GNU General Public License along
29 * with this program; if not, write to the Free Software Foundation, Inc.,
30 * 675 Mass Ave, Cambridge, MA 02139, USA.
31 */
32
33#include <linux/delay.h>
34#include <linux/io.h>
35#include <linux/platform_device.h>
36
37#ifndef __CLOCKSOURCE_DMTIMER_H
38#define __CLOCKSOURCE_DMTIMER_H
39
40/* clock sources */
41#define OMAP_TIMER_SRC_SYS_CLK 0x00
42#define OMAP_TIMER_SRC_32_KHZ 0x01
43#define OMAP_TIMER_SRC_EXT_CLK 0x02
44
45/* timer interrupt enable bits */
46#define OMAP_TIMER_INT_CAPTURE (1 << 2)
47#define OMAP_TIMER_INT_OVERFLOW (1 << 1)
48#define OMAP_TIMER_INT_MATCH (1 << 0)
49
50/* trigger types */
51#define OMAP_TIMER_TRIGGER_NONE 0x00
52#define OMAP_TIMER_TRIGGER_OVERFLOW 0x01
53#define OMAP_TIMER_TRIGGER_OVERFLOW_AND_COMPARE 0x02
54
55/* timer capabilities used in hwmod database */
56#define OMAP_TIMER_SECURE 0x80000000
57#define OMAP_TIMER_ALWON 0x40000000
58#define OMAP_TIMER_HAS_PWM 0x20000000
59#define OMAP_TIMER_NEEDS_RESET 0x10000000
60#define OMAP_TIMER_HAS_DSP_IRQ 0x08000000
61
62struct omap_dm_timer {
63};
64
65u32 omap_dm_timer_modify_idlect_mask(u32 inputmask);
66
67/*
68 * Do not use the defines below, they are not needed. They should be only
69 * used by dmtimer.c and sys_timer related code.
70 */
71
72/*
73 * The interrupt registers are different between v1 and v2 ip.
74 * These registers are offsets from timer->iobase.
75 */
76#define OMAP_TIMER_ID_OFFSET 0x00
77#define OMAP_TIMER_OCP_CFG_OFFSET 0x10
78
79#define OMAP_TIMER_V1_SYS_STAT_OFFSET 0x14
80#define OMAP_TIMER_V1_STAT_OFFSET 0x18
81#define OMAP_TIMER_V1_INT_EN_OFFSET 0x1c
82
83#define OMAP_TIMER_V2_IRQSTATUS_RAW 0x24
84#define OMAP_TIMER_V2_IRQSTATUS 0x28
85#define OMAP_TIMER_V2_IRQENABLE_SET 0x2c
86#define OMAP_TIMER_V2_IRQENABLE_CLR 0x30
87
88/*
89 * The functional registers have a different base on v1 and v2 ip.
90 * These registers are offsets from timer->func_base. The func_base
91 * is samae as io_base for v1 and io_base + 0x14 for v2 ip.
92 *
93 */
94#define OMAP_TIMER_V2_FUNC_OFFSET 0x14
95
96#define _OMAP_TIMER_WAKEUP_EN_OFFSET 0x20
97#define _OMAP_TIMER_CTRL_OFFSET 0x24
98#define OMAP_TIMER_CTRL_GPOCFG (1 << 14)
99#define OMAP_TIMER_CTRL_CAPTMODE (1 << 13)
100#define OMAP_TIMER_CTRL_PT (1 << 12)
101#define OMAP_TIMER_CTRL_TCM_LOWTOHIGH (0x1 << 8)
102#define OMAP_TIMER_CTRL_TCM_HIGHTOLOW (0x2 << 8)
103#define OMAP_TIMER_CTRL_TCM_BOTHEDGES (0x3 << 8)
104#define OMAP_TIMER_CTRL_SCPWM (1 << 7)
105#define OMAP_TIMER_CTRL_CE (1 << 6) /* compare enable */
106#define OMAP_TIMER_CTRL_PRE (1 << 5) /* prescaler enable */
107#define OMAP_TIMER_CTRL_PTV_SHIFT 2 /* prescaler value shift */
108#define OMAP_TIMER_CTRL_POSTED (1 << 2)
109#define OMAP_TIMER_CTRL_AR (1 << 1) /* auto-reload enable */
110#define OMAP_TIMER_CTRL_ST (1 << 0) /* start timer */
111#define _OMAP_TIMER_COUNTER_OFFSET 0x28
112#define _OMAP_TIMER_LOAD_OFFSET 0x2c
113#define _OMAP_TIMER_TRIGGER_OFFSET 0x30
114#define _OMAP_TIMER_WRITE_PEND_OFFSET 0x34
115#define WP_NONE 0 /* no write pending bit */
116#define WP_TCLR (1 << 0)
117#define WP_TCRR (1 << 1)
118#define WP_TLDR (1 << 2)
119#define WP_TTGR (1 << 3)
120#define WP_TMAR (1 << 4)
121#define WP_TPIR (1 << 5)
122#define WP_TNIR (1 << 6)
123#define WP_TCVR (1 << 7)
124#define WP_TOCR (1 << 8)
125#define WP_TOWR (1 << 9)
126#define _OMAP_TIMER_MATCH_OFFSET 0x38
127#define _OMAP_TIMER_CAPTURE_OFFSET 0x3c
128#define _OMAP_TIMER_IF_CTRL_OFFSET 0x40
129#define _OMAP_TIMER_CAPTURE2_OFFSET 0x44 /* TCAR2, 34xx only */
130#define _OMAP_TIMER_TICK_POS_OFFSET 0x48 /* TPIR, 34xx only */
131#define _OMAP_TIMER_TICK_NEG_OFFSET 0x4c /* TNIR, 34xx only */
132#define _OMAP_TIMER_TICK_COUNT_OFFSET 0x50 /* TCVR, 34xx only */
133#define _OMAP_TIMER_TICK_INT_MASK_SET_OFFSET 0x54 /* TOCR, 34xx only */
134#define _OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET 0x58 /* TOWR, 34xx only */
135
136#endif /* __CLOCKSOURCE_DMTIMER_H */
137

source code of linux/include/clocksource/timer-ti-dm.h