Release 4.14 arch/mips/kernel/csrc-sb1250.c
/*
* Copyright (C) 2000, 2001 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/clocksource.h>
#include <linux/sched_clock.h>
#include <asm/addrspace.h>
#include <asm/io.h>
#include <asm/time.h>
#include <asm/sibyte/sb1250.h>
#include <asm/sibyte/sb1250_regs.h>
#include <asm/sibyte/sb1250_int.h>
#include <asm/sibyte/sb1250_scd.h>
#define SB1250_HPT_NUM 3
#define SB1250_HPT_VALUE M_SCD_TIMER_CNT
/* max value */
/*
* The HPT is free running from SB1250_HPT_VALUE down to 0 then starts over
* again.
*/
static inline u64 sb1250_hpt_get_cycles(void)
{
unsigned int count;
void __iomem *addr;
addr = IOADDR(A_SCD_TIMER_REGISTER(SB1250_HPT_NUM, R_SCD_TIMER_CNT));
count = G_SCD_TIMER_CNT(__raw_readq(addr));
return SB1250_HPT_VALUE - count;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ralf Bächle | 27 | 60.00% | 1 | 33.33% |
| Deng-Cheng Zhu | 17 | 37.78% | 1 | 33.33% |
| Thomas Gleixner | 1 | 2.22% | 1 | 33.33% |
| Total | 45 | 100.00% | 3 | 100.00% |
static u64 sb1250_hpt_read(struct clocksource *cs)
{
return sb1250_hpt_get_cycles();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Deng-Cheng Zhu | 14 | 93.33% | 1 | 50.00% |
| Thomas Gleixner | 1 | 6.67% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
struct clocksource bcm1250_clocksource = {
.name = "bcm1250-counter-3",
.rating = 200,
.read = sb1250_hpt_read,
.mask = CLOCKSOURCE_MASK(23),
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
static u64 notrace sb1250_read_sched_clock(void)
{
return sb1250_hpt_get_cycles();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Deng-Cheng Zhu | 13 | 100.00% | 1 | 100.00% |
| Total | 13 | 100.00% | 1 | 100.00% |
void __init sb1250_clocksource_init(void)
{
struct clocksource *cs = &bcm1250_clocksource;
/* Setup hpt using timer #3 but do not enable irq for it */
__raw_writeq(0,
IOADDR(A_SCD_TIMER_REGISTER(SB1250_HPT_NUM,
R_SCD_TIMER_CFG)));
__raw_writeq(SB1250_HPT_VALUE,
IOADDR(A_SCD_TIMER_REGISTER(SB1250_HPT_NUM,
R_SCD_TIMER_INIT)));
__raw_writeq(M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS,
IOADDR(A_SCD_TIMER_REGISTER(SB1250_HPT_NUM,
R_SCD_TIMER_CFG)));
clocksource_register_hz(cs, V_SCD_TIMER_FREQ);
sched_clock_register(sb1250_read_sched_clock, 23, V_SCD_TIMER_FREQ);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ralf Bächle | 70 | 87.50% | 1 | 33.33% |
| Deng-Cheng Zhu | 9 | 11.25% | 1 | 33.33% |
| John Stultz | 1 | 1.25% | 1 | 33.33% |
| Total | 80 | 100.00% | 3 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ralf Bächle | 165 | 73.33% | 2 | 28.57% |
| Deng-Cheng Zhu | 57 | 25.33% | 3 | 42.86% |
| Thomas Gleixner | 2 | 0.89% | 1 | 14.29% |
| John Stultz | 1 | 0.44% | 1 | 14.29% |
| Total | 225 | 100.00% | 7 | 100.00% |
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