137 lines
4.9 KiB
C
137 lines
4.9 KiB
C
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/*
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* OMAP Dual-Mode Timers
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*
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* Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/
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* Tarun Kanti DebBarma <tarun.kanti@ti.com>
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* Thara Gopinath <thara@ti.com>
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*
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* Platform device conversion and hwmod support.
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*
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* Copyright (C) 2005 Nokia Corporation
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* Author: Lauri Leukkunen <lauri.leukkunen@nokia.com>
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* PWM and clock framwork support by Timo Teras.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#ifndef __CLOCKSOURCE_DMTIMER_H
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#define __CLOCKSOURCE_DMTIMER_H
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/* clock sources */
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#define OMAP_TIMER_SRC_SYS_CLK 0x00
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#define OMAP_TIMER_SRC_32_KHZ 0x01
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#define OMAP_TIMER_SRC_EXT_CLK 0x02
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/* timer interrupt enable bits */
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#define OMAP_TIMER_INT_CAPTURE (1 << 2)
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#define OMAP_TIMER_INT_OVERFLOW (1 << 1)
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#define OMAP_TIMER_INT_MATCH (1 << 0)
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/* trigger types */
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#define OMAP_TIMER_TRIGGER_NONE 0x00
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#define OMAP_TIMER_TRIGGER_OVERFLOW 0x01
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#define OMAP_TIMER_TRIGGER_OVERFLOW_AND_COMPARE 0x02
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/* timer capabilities used in hwmod database */
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#define OMAP_TIMER_SECURE 0x80000000
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#define OMAP_TIMER_ALWON 0x40000000
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#define OMAP_TIMER_HAS_PWM 0x20000000
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#define OMAP_TIMER_NEEDS_RESET 0x10000000
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#define OMAP_TIMER_HAS_DSP_IRQ 0x08000000
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struct omap_dm_timer {
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};
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u32 omap_dm_timer_modify_idlect_mask(u32 inputmask);
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/*
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* Do not use the defines below, they are not needed. They should be only
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* used by dmtimer.c and sys_timer related code.
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*/
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/*
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* The interrupt registers are different between v1 and v2 ip.
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* These registers are offsets from timer->iobase.
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*/
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#define OMAP_TIMER_ID_OFFSET 0x00
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#define OMAP_TIMER_OCP_CFG_OFFSET 0x10
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#define OMAP_TIMER_V1_SYS_STAT_OFFSET 0x14
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#define OMAP_TIMER_V1_STAT_OFFSET 0x18
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#define OMAP_TIMER_V1_INT_EN_OFFSET 0x1c
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#define OMAP_TIMER_V2_IRQSTATUS_RAW 0x24
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#define OMAP_TIMER_V2_IRQSTATUS 0x28
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#define OMAP_TIMER_V2_IRQENABLE_SET 0x2c
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#define OMAP_TIMER_V2_IRQENABLE_CLR 0x30
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/*
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* The functional registers have a different base on v1 and v2 ip.
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* These registers are offsets from timer->func_base. The func_base
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* is samae as io_base for v1 and io_base + 0x14 for v2 ip.
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*
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*/
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#define OMAP_TIMER_V2_FUNC_OFFSET 0x14
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#define _OMAP_TIMER_WAKEUP_EN_OFFSET 0x20
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#define _OMAP_TIMER_CTRL_OFFSET 0x24
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#define OMAP_TIMER_CTRL_GPOCFG (1 << 14)
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#define OMAP_TIMER_CTRL_CAPTMODE (1 << 13)
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#define OMAP_TIMER_CTRL_PT (1 << 12)
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#define OMAP_TIMER_CTRL_TCM_LOWTOHIGH (0x1 << 8)
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#define OMAP_TIMER_CTRL_TCM_HIGHTOLOW (0x2 << 8)
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#define OMAP_TIMER_CTRL_TCM_BOTHEDGES (0x3 << 8)
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#define OMAP_TIMER_CTRL_SCPWM (1 << 7)
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#define OMAP_TIMER_CTRL_CE (1 << 6) /* compare enable */
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#define OMAP_TIMER_CTRL_PRE (1 << 5) /* prescaler enable */
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#define OMAP_TIMER_CTRL_PTV_SHIFT 2 /* prescaler value shift */
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#define OMAP_TIMER_CTRL_POSTED (1 << 2)
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#define OMAP_TIMER_CTRL_AR (1 << 1) /* auto-reload enable */
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#define OMAP_TIMER_CTRL_ST (1 << 0) /* start timer */
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#define _OMAP_TIMER_COUNTER_OFFSET 0x28
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#define _OMAP_TIMER_LOAD_OFFSET 0x2c
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#define _OMAP_TIMER_TRIGGER_OFFSET 0x30
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#define _OMAP_TIMER_WRITE_PEND_OFFSET 0x34
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#define WP_NONE 0 /* no write pending bit */
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#define WP_TCLR (1 << 0)
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#define WP_TCRR (1 << 1)
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#define WP_TLDR (1 << 2)
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#define WP_TTGR (1 << 3)
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#define WP_TMAR (1 << 4)
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#define WP_TPIR (1 << 5)
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#define WP_TNIR (1 << 6)
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#define WP_TCVR (1 << 7)
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#define WP_TOCR (1 << 8)
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#define WP_TOWR (1 << 9)
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#define _OMAP_TIMER_MATCH_OFFSET 0x38
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#define _OMAP_TIMER_CAPTURE_OFFSET 0x3c
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#define _OMAP_TIMER_IF_CTRL_OFFSET 0x40
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#define _OMAP_TIMER_CAPTURE2_OFFSET 0x44 /* TCAR2, 34xx only */
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#define _OMAP_TIMER_TICK_POS_OFFSET 0x48 /* TPIR, 34xx only */
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#define _OMAP_TIMER_TICK_NEG_OFFSET 0x4c /* TNIR, 34xx only */
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#define _OMAP_TIMER_TICK_COUNT_OFFSET 0x50 /* TCVR, 34xx only */
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#define _OMAP_TIMER_TICK_INT_MASK_SET_OFFSET 0x54 /* TOCR, 34xx only */
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#define _OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET 0x58 /* TOWR, 34xx only */
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#endif /* __CLOCKSOURCE_DMTIMER_H */
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