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MIPS: Loongson32: Remove reset.c

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Commit 2a31bf2080 ("watchdog: loongson1_wdt: Implement restart handler")
implmented .restart ops, Then, _machine_restart is no longer needed.
The _machine_halt and pm_power_off are also unnecessary,
which contain no hardware operations.

Therefore, remove the entire reset.c and related header file.
Update the Makefile accordingly.

Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Keguang Zhang 2023-05-11 20:06:48 +08:00 committed by Thomas Bogendoerfer
parent 745b7908ec
commit 1004be040f
4 changed files with 1 additions and 68 deletions
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1
arch/mips/include/asm/mach-loongson32/loongson1.h
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@ -49,6 +49,5 @@
#include <regs-mux.h>
#include <regs-pwm.h>
#include <regs-rtc.h>
#include <regs-wdt.h>
#endif /* __ASM_MACH_LOONGSON32_LOONGSON1_H */

15
arch/mips/include/asm/mach-loongson32/regs-wdt.h
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@ -1,15 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
*
* Loongson 1 Watchdog Register Definitions.
*/
#ifndef __ASM_MACH_LOONGSON32_REGS_WDT_H
#define __ASM_MACH_LOONGSON32_REGS_WDT_H
#define WDT_EN 0x0
#define WDT_TIMER 0x4
#define WDT_SET 0x8
#endif /* __ASM_MACH_LOONGSON32_REGS_WDT_H */

2
arch/mips/loongson32/common/Makefile
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@ -3,4 +3,4 @@
# Makefile for common code of loongson1 based machines.
#
obj-y += time.o irq.o platform.o prom.o reset.o setup.o
obj-y += time.o irq.o platform.o prom.o setup.o

51
arch/mips/loongson32/common/reset.c
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@ -1,51 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
*/
#include <linux/io.h>
#include <linux/pm.h>
#include <linux/sizes.h>
#include <asm/idle.h>
#include <asm/reboot.h>
#include <loongson1.h>
static void __iomem *wdt_reg_base;
static void ls1x_halt(void)
{
while (1) {
if (cpu_wait)
cpu_wait();
}
}
static void ls1x_restart(char *command)
{
__raw_writel(0x1, wdt_reg_base + WDT_EN);
__raw_writel(0x1, wdt_reg_base + WDT_TIMER);
__raw_writel(0x1, wdt_reg_base + WDT_SET);
ls1x_halt();
}
static void ls1x_power_off(void)
{
ls1x_halt();
}
static int __init ls1x_reboot_setup(void)
{
wdt_reg_base = ioremap(LS1X_WDT_BASE, (SZ_4 + SZ_8));
if (!wdt_reg_base)
panic("Failed to remap watchdog registers");
_machine_restart = ls1x_restart;
_machine_halt = ls1x_halt;
pm_power_off = ls1x_power_off;
return 0;
}
arch_initcall(ls1x_reboot_setup);