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 
62 struct omap_dm_timer {
63 };
64 
65 int omap_dm_timer_get_irq(struct omap_dm_timer *timer);
66 
67 u32 omap_dm_timer_modify_idlect_mask(u32 inputmask);
68 
69 /*
70  * Do not use the defines below, they are not needed. They should be only
71  * used by dmtimer.c and sys_timer related code.
72  */
73 
74 /*
75  * The interrupt registers are different between v1 and v2 ip.
76  * These registers are offsets from timer->iobase.
77  */
78 #define OMAP_TIMER_ID_OFFSET		0x00
79 #define OMAP_TIMER_OCP_CFG_OFFSET	0x10
80 
81 #define OMAP_TIMER_V1_SYS_STAT_OFFSET	0x14
82 #define OMAP_TIMER_V1_STAT_OFFSET	0x18
83 #define OMAP_TIMER_V1_INT_EN_OFFSET	0x1c
84 
85 #define OMAP_TIMER_V2_IRQSTATUS_RAW	0x24
86 #define OMAP_TIMER_V2_IRQSTATUS		0x28
87 #define OMAP_TIMER_V2_IRQENABLE_SET	0x2c
88 #define OMAP_TIMER_V2_IRQENABLE_CLR	0x30
89 
90 /*
91  * The functional registers have a different base on v1 and v2 ip.
92  * These registers are offsets from timer->func_base. The func_base
93  * is samae as io_base for v1 and io_base + 0x14 for v2 ip.
94  *
95  */
96 #define OMAP_TIMER_V2_FUNC_OFFSET		0x14
97 
98 #define _OMAP_TIMER_WAKEUP_EN_OFFSET	0x20
99 #define _OMAP_TIMER_CTRL_OFFSET		0x24
100 #define		OMAP_TIMER_CTRL_GPOCFG		(1 << 14)
101 #define		OMAP_TIMER_CTRL_CAPTMODE	(1 << 13)
102 #define		OMAP_TIMER_CTRL_PT		(1 << 12)
103 #define		OMAP_TIMER_CTRL_TCM_LOWTOHIGH	(0x1 << 8)
104 #define		OMAP_TIMER_CTRL_TCM_HIGHTOLOW	(0x2 << 8)
105 #define		OMAP_TIMER_CTRL_TCM_BOTHEDGES	(0x3 << 8)
106 #define		OMAP_TIMER_CTRL_SCPWM		(1 << 7)
107 #define		OMAP_TIMER_CTRL_CE		(1 << 6) /* compare enable */
108 #define		OMAP_TIMER_CTRL_PRE		(1 << 5) /* prescaler enable */
109 #define		OMAP_TIMER_CTRL_PTV_SHIFT	2 /* prescaler value shift */
110 #define		OMAP_TIMER_CTRL_POSTED		(1 << 2)
111 #define		OMAP_TIMER_CTRL_AR		(1 << 1) /* auto-reload enable */
112 #define		OMAP_TIMER_CTRL_ST		(1 << 0) /* start timer */
113 #define _OMAP_TIMER_COUNTER_OFFSET	0x28
114 #define _OMAP_TIMER_LOAD_OFFSET		0x2c
115 #define _OMAP_TIMER_TRIGGER_OFFSET	0x30
116 #define _OMAP_TIMER_WRITE_PEND_OFFSET	0x34
117 #define		WP_NONE			0	/* no write pending bit */
118 #define		WP_TCLR			(1 << 0)
119 #define		WP_TCRR			(1 << 1)
120 #define		WP_TLDR			(1 << 2)
121 #define		WP_TTGR			(1 << 3)
122 #define		WP_TMAR			(1 << 4)
123 #define		WP_TPIR			(1 << 5)
124 #define		WP_TNIR			(1 << 6)
125 #define		WP_TCVR			(1 << 7)
126 #define		WP_TOCR			(1 << 8)
127 #define		WP_TOWR			(1 << 9)
128 #define _OMAP_TIMER_MATCH_OFFSET	0x38
129 #define _OMAP_TIMER_CAPTURE_OFFSET	0x3c
130 #define _OMAP_TIMER_IF_CTRL_OFFSET	0x40
131 #define _OMAP_TIMER_CAPTURE2_OFFSET		0x44	/* TCAR2, 34xx only */
132 #define _OMAP_TIMER_TICK_POS_OFFSET		0x48	/* TPIR, 34xx only */
133 #define _OMAP_TIMER_TICK_NEG_OFFSET		0x4c	/* TNIR, 34xx only */
134 #define _OMAP_TIMER_TICK_COUNT_OFFSET		0x50	/* TCVR, 34xx only */
135 #define _OMAP_TIMER_TICK_INT_MASK_SET_OFFSET	0x54	/* TOCR, 34xx only */
136 #define _OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET	0x58	/* TOWR, 34xx only */
137 
138 #endif /* __CLOCKSOURCE_DMTIMER_H */
139