Merge tag 'timers-v5.20-rc1' of https://git.linaro.org/people/daniel.lezcano/linux...
[linux-2.6-block.git] / include / clocksource / timer-ti-dm.h
CommitLineData
9839c6b8 1/*
9839c6b8
TL
2 * OMAP Dual-Mode Timers
3 *
7f317d34 4 * Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/
eddb1262
TG
5 * Tarun Kanti DebBarma <tarun.kanti@ti.com>
6 * Thara Gopinath <thara@ti.com>
7 *
8 * Platform device conversion and hwmod support.
9 *
9839c6b8
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10 * Copyright (C) 2005 Nokia Corporation
11 * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com>
77900a2f 12 * PWM and clock framwork support by Timo Teras.
9839c6b8
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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
caf64f2f 33#include <linux/delay.h>
a7cd4b08 34#include <linux/io.h>
97933d6c 35#include <linux/platform_device.h>
caf64f2f 36
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37#ifndef __CLOCKSOURCE_DMTIMER_H
38#define __CLOCKSOURCE_DMTIMER_H
9839c6b8 39
77900a2f
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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
9839c6b8 44
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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)
9839c6b8 49
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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
9839c6b8 54
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55/* posted mode types */
56#define OMAP_TIMER_NONPOSTED 0x00
57#define OMAP_TIMER_POSTED 0x01
58
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59/* timer capabilities used in hwmod database */
60#define OMAP_TIMER_SECURE 0x80000000
61#define OMAP_TIMER_ALWON 0x40000000
62#define OMAP_TIMER_HAS_PWM 0x20000000
6615975b 63#define OMAP_TIMER_NEEDS_RESET 0x10000000
5c3e4ec4 64#define OMAP_TIMER_HAS_DSP_IRQ 0x08000000
c345c8b0 65
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66/*
67 * timer errata flags
68 *
69 * Errata i103/i767 impacts all OMAP3/4/5 devices including AM33xx. This
70 * errata prevents us from using posted mode on these devices, unless the
71 * timer counter register is never read. For more details please refer to
72 * the OMAP3/4/5 errata documents.
73 */
74#define OMAP_TIMER_ERRATA_I103_I767 0x80000000
75
b481113a 76struct timer_regs {
9517c577 77 u32 ocp_cfg;
b481113a 78 u32 tidr;
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79 u32 tier;
80 u32 twer;
81 u32 tclr;
82 u32 tcrr;
83 u32 tldr;
84 u32 ttrg;
85 u32 twps;
86 u32 tmar;
87 u32 tcar1;
88 u32 tsicr;
89 u32 tcar2;
90 u32 tpir;
91 u32 tnir;
92 u32 tcvr;
93 u32 tocr;
94 u32 towr;
95};
96
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97struct omap_dm_timer {
98 int id;
99 int irq;
100 struct clk *fclk;
101
102 void __iomem *io_base;
103 void __iomem *irq_stat; /* TISR/IRQSTATUS interrupt status */
104 void __iomem *irq_ena; /* irq enable */
105 void __iomem *irq_dis; /* irq disable, only on v2 ip */
106 void __iomem *pend; /* write pending */
107 void __iomem *func_base; /* function register base */
108
5e20931c 109 atomic_t enabled;
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110 unsigned long rate;
111 unsigned reserved:1;
112 unsigned posted:1;
113 struct timer_regs context;
755ae860
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114 int revision;
115 u32 capability;
116 u32 errata;
117 struct platform_device *pdev;
118 struct list_head node;
b34677b0 119 struct notifier_block nb;
755ae860
JH
120};
121
b7b4ff76 122int omap_dm_timer_reserve_systimer(int id);
373fe0bd 123struct omap_dm_timer *omap_dm_timer_request_by_cap(u32 cap);
9839c6b8 124
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125int omap_dm_timer_get_irq(struct omap_dm_timer *timer);
126
127u32 omap_dm_timer_modify_idlect_mask(u32 inputmask);
b65d1248 128
ab4eb8b0 129int omap_dm_timer_trigger(struct omap_dm_timer *timer);
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130
131int omap_dm_timers_active(void);
132
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133/*
134 * Do not use the defines below, they are not needed. They should be only
135 * used by dmtimer.c and sys_timer related code.
136 */
137
ee17f114
TL
138/*
139 * The interrupt registers are different between v1 and v2 ip.
140 * These registers are offsets from timer->iobase.
141 */
142#define OMAP_TIMER_ID_OFFSET 0x00
143#define OMAP_TIMER_OCP_CFG_OFFSET 0x10
144
145#define OMAP_TIMER_V1_SYS_STAT_OFFSET 0x14
146#define OMAP_TIMER_V1_STAT_OFFSET 0x18
147#define OMAP_TIMER_V1_INT_EN_OFFSET 0x1c
148
149#define OMAP_TIMER_V2_IRQSTATUS_RAW 0x24
150#define OMAP_TIMER_V2_IRQSTATUS 0x28
151#define OMAP_TIMER_V2_IRQENABLE_SET 0x2c
152#define OMAP_TIMER_V2_IRQENABLE_CLR 0x30
153
154/*
155 * The functional registers have a different base on v1 and v2 ip.
156 * These registers are offsets from timer->func_base. The func_base
157 * is samae as io_base for v1 and io_base + 0x14 for v2 ip.
158 *
159 */
160#define OMAP_TIMER_V2_FUNC_OFFSET 0x14
161
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162#define _OMAP_TIMER_WAKEUP_EN_OFFSET 0x20
163#define _OMAP_TIMER_CTRL_OFFSET 0x24
164#define OMAP_TIMER_CTRL_GPOCFG (1 << 14)
165#define OMAP_TIMER_CTRL_CAPTMODE (1 << 13)
166#define OMAP_TIMER_CTRL_PT (1 << 12)
167#define OMAP_TIMER_CTRL_TCM_LOWTOHIGH (0x1 << 8)
168#define OMAP_TIMER_CTRL_TCM_HIGHTOLOW (0x2 << 8)
169#define OMAP_TIMER_CTRL_TCM_BOTHEDGES (0x3 << 8)
170#define OMAP_TIMER_CTRL_SCPWM (1 << 7)
171#define OMAP_TIMER_CTRL_CE (1 << 6) /* compare enable */
172#define OMAP_TIMER_CTRL_PRE (1 << 5) /* prescaler enable */
173#define OMAP_TIMER_CTRL_PTV_SHIFT 2 /* prescaler value shift */
174#define OMAP_TIMER_CTRL_POSTED (1 << 2)
175#define OMAP_TIMER_CTRL_AR (1 << 1) /* auto-reload enable */
176#define OMAP_TIMER_CTRL_ST (1 << 0) /* start timer */
177#define _OMAP_TIMER_COUNTER_OFFSET 0x28
178#define _OMAP_TIMER_LOAD_OFFSET 0x2c
179#define _OMAP_TIMER_TRIGGER_OFFSET 0x30
180#define _OMAP_TIMER_WRITE_PEND_OFFSET 0x34
181#define WP_NONE 0 /* no write pending bit */
182#define WP_TCLR (1 << 0)
183#define WP_TCRR (1 << 1)
184#define WP_TLDR (1 << 2)
185#define WP_TTGR (1 << 3)
186#define WP_TMAR (1 << 4)
187#define WP_TPIR (1 << 5)
188#define WP_TNIR (1 << 6)
189#define WP_TCVR (1 << 7)
190#define WP_TOCR (1 << 8)
191#define WP_TOWR (1 << 9)
192#define _OMAP_TIMER_MATCH_OFFSET 0x38
193#define _OMAP_TIMER_CAPTURE_OFFSET 0x3c
194#define _OMAP_TIMER_IF_CTRL_OFFSET 0x40
195#define _OMAP_TIMER_CAPTURE2_OFFSET 0x44 /* TCAR2, 34xx only */
196#define _OMAP_TIMER_TICK_POS_OFFSET 0x48 /* TPIR, 34xx only */
197#define _OMAP_TIMER_TICK_NEG_OFFSET 0x4c /* TNIR, 34xx only */
198#define _OMAP_TIMER_TICK_COUNT_OFFSET 0x50 /* TCVR, 34xx only */
199#define _OMAP_TIMER_TICK_INT_MASK_SET_OFFSET 0x54 /* TOCR, 34xx only */
200#define _OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET 0x58 /* TOWR, 34xx only */
201
202/* register offsets with the write pending bit encoded */
203#define WPSHIFT 16
204
ec97489d
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205#define OMAP_TIMER_WAKEUP_EN_REG (_OMAP_TIMER_WAKEUP_EN_OFFSET \
206 | (WP_NONE << WPSHIFT))
207
208#define OMAP_TIMER_CTRL_REG (_OMAP_TIMER_CTRL_OFFSET \
209 | (WP_TCLR << WPSHIFT))
210
211#define OMAP_TIMER_COUNTER_REG (_OMAP_TIMER_COUNTER_OFFSET \
212 | (WP_TCRR << WPSHIFT))
213
214#define OMAP_TIMER_LOAD_REG (_OMAP_TIMER_LOAD_OFFSET \
215 | (WP_TLDR << WPSHIFT))
216
217#define OMAP_TIMER_TRIGGER_REG (_OMAP_TIMER_TRIGGER_OFFSET \
218 | (WP_TTGR << WPSHIFT))
219
220#define OMAP_TIMER_WRITE_PEND_REG (_OMAP_TIMER_WRITE_PEND_OFFSET \
221 | (WP_NONE << WPSHIFT))
222
223#define OMAP_TIMER_MATCH_REG (_OMAP_TIMER_MATCH_OFFSET \
224 | (WP_TMAR << WPSHIFT))
225
226#define OMAP_TIMER_CAPTURE_REG (_OMAP_TIMER_CAPTURE_OFFSET \
227 | (WP_NONE << WPSHIFT))
228
229#define OMAP_TIMER_IF_CTRL_REG (_OMAP_TIMER_IF_CTRL_OFFSET \
230 | (WP_NONE << WPSHIFT))
231
232#define OMAP_TIMER_CAPTURE2_REG (_OMAP_TIMER_CAPTURE2_OFFSET \
233 | (WP_NONE << WPSHIFT))
234
235#define OMAP_TIMER_TICK_POS_REG (_OMAP_TIMER_TICK_POS_OFFSET \
236 | (WP_TPIR << WPSHIFT))
237
238#define OMAP_TIMER_TICK_NEG_REG (_OMAP_TIMER_TICK_NEG_OFFSET \
239 | (WP_TNIR << WPSHIFT))
240
241#define OMAP_TIMER_TICK_COUNT_REG (_OMAP_TIMER_TICK_COUNT_OFFSET \
242 | (WP_TCVR << WPSHIFT))
243
244#define OMAP_TIMER_TICK_INT_MASK_SET_REG \
245 (_OMAP_TIMER_TICK_INT_MASK_SET_OFFSET | (WP_TOCR << WPSHIFT))
246
247#define OMAP_TIMER_TICK_INT_MASK_COUNT_REG \
248 (_OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET | (WP_TOWR << WPSHIFT))
249
f7bda9ee 250#endif /* __CLOCKSOURCE_DMTIMER_H */