nagai/kernel
3
0
Fork 0
forked from mirrors/linux
Code Pull requests Activity

ARC: breakout timer include code into separate header ...

Browse source 
... which allows for use in drivers/clocksource later

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2016-10-31 13:06:19 -07:00
parent 2d7f5c48c0
commit b26c2e3823
3 changed files with 42 additions and 23 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

9
arch/arc/include/asm/arcregs.h
View file

@ -20,7 +20,6 @@
#define ARC_REG_FP_V2_BCR 0xc8 /* ARCv2 FPU */
#define ARC_REG_SLC_BCR 0xce
#define ARC_REG_DCCM_BUILD 0x74 /* DCCM size (common) */
#define ARC_REG_TIMERS_BCR 0x75
#define ARC_REG_AP_BCR 0x76
#define ARC_REG_ICCM_BUILD 0x78 /* ICCM size (common) */
#define ARC_REG_XY_MEM_BCR 0x79
@ -208,13 +207,7 @@ struct bcr_fp_arcv2 {
#endif
};
struct bcr_timer {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad2:15, rtsc:1, pad1:5, rtc:1, t1:1, t0:1, ver:8;
#else
unsigned int ver:8, t0:1, t1:1, rtc:1, pad1:5, rtsc:1, pad2:15;
#endif
};
#include <soc/arc/timers.h>
struct bcr_bpu_arcompact {
#ifdef CONFIG_CPU_BIG_ENDIAN

18
arch/arc/kernel/time.c
View file

@ -38,22 +38,10 @@
#include <linux/of.h>
#include <linux/of_irq.h>
#include <asm/irq.h>
#include <asm/arcregs.h>
#include <soc/arc/timers.h>
#include <soc/arc/mcip.h>
/* Timer related Aux registers */
#define ARC_REG_TIMER0_LIMIT 0x23 /* timer 0 limit */
#define ARC_REG_TIMER0_CTRL 0x22 /* timer 0 control */
#define ARC_REG_TIMER0_CNT 0x21 /* timer 0 count */
#define ARC_REG_TIMER1_LIMIT 0x102 /* timer 1 limit */
#define ARC_REG_TIMER1_CTRL 0x101 /* timer 1 control */
#define ARC_REG_TIMER1_CNT 0x100 /* timer 1 count */
#define TIMER_CTRL_IE (1 << 0) /* Interrupt when Count reaches limit */
#define TIMER_CTRL_NH (1 << 1) /* Count only when CPU NOT halted */
#define ARC_TIMER_MAX 0xFFFFFFFF
static unsigned long arc_timer_freq;
@ -218,7 +206,7 @@ static int __init arc_cs_setup_timer1(struct device_node *node)
if (ret)
return ret;
write_aux_reg(ARC_REG_TIMER1_LIMIT, ARC_TIMER_MAX);
write_aux_reg(ARC_REG_TIMER1_LIMIT, ARC_TIMERN_MAX);
write_aux_reg(ARC_REG_TIMER1_CNT, 0);
write_aux_reg(ARC_REG_TIMER1_CTRL, TIMER_CTRL_NH);
@ -296,7 +284,7 @@ static int arc_timer_starting_cpu(unsigned int cpu)
evt->cpumask = cpumask_of(smp_processor_id());
clockevents_config_and_register(evt, arc_timer_freq, 0, ARC_TIMER_MAX);
clockevents_config_and_register(evt, arc_timer_freq, 0, ARC_TIMERN_MAX);
enable_percpu_irq(arc_timer_irq, 0);
return 0;
}

38
include/soc/arc/timers.h Normal file
View file

@ -0,0 +1,38 @@
/*
* Copyright (C) 2016-17 Synopsys, Inc. (www.synopsys.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __SOC_ARC_TIMERS_H
#define __SOC_ARC_TIMERS_H
#include <soc/arc/aux.h>
/* Timer related Aux registers */
#define ARC_REG_TIMER0_LIMIT 0x23 /* timer 0 limit */
#define ARC_REG_TIMER0_CTRL 0x22 /* timer 0 control */
#define ARC_REG_TIMER0_CNT 0x21 /* timer 0 count */
#define ARC_REG_TIMER1_LIMIT 0x102 /* timer 1 limit */
#define ARC_REG_TIMER1_CTRL 0x101 /* timer 1 control */
#define ARC_REG_TIMER1_CNT 0x100 /* timer 1 count */
/* CTRL reg bits */
#define TIMER_CTRL_IE (1 << 0) /* Interrupt when Count reaches limit */
#define TIMER_CTRL_NH (1 << 1) /* Count only when CPU NOT halted */
#define ARC_TIMERN_MAX 0xFFFFFFFF
#define ARC_REG_TIMERS_BCR 0x75
struct bcr_timer {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad2:15, rtsc:1, pad1:5, rtc:1, t1:1, t0:1, ver:8;
#else
unsigned int ver:8, t0:1, t1:1, rtc:1, pad1:5, rtsc:1, pad2:15;
#endif
};
#endif