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Diffstat (limited to 'arch/mips/vr41xx/common/pmu.c')
-rw-r--r--arch/mips/vr41xx/common/pmu.c123
1 files changed, 0 insertions, 123 deletions
diff --git a/arch/mips/vr41xx/common/pmu.c b/arch/mips/vr41xx/common/pmu.c
deleted file mode 100644
index 93cc7e0b30b1..000000000000
--- a/arch/mips/vr41xx/common/pmu.c
+++ /dev/null
@@ -1,123 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * pmu.c, Power Management Unit routines for NEC VR4100 series.
- *
- * Copyright (C) 2003-2007 Yoichi Yuasa <yuasa@linux-mips.org>
- */
-#include <linux/cpu.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/kernel.h>
-#include <linux/pm.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-
-#include <asm/cacheflush.h>
-#include <asm/cpu.h>
-#include <asm/idle.h>
-#include <asm/io.h>
-#include <asm/processor.h>
-#include <asm/reboot.h>
-
-#define PMU_TYPE1_BASE 0x0b0000a0UL
-#define PMU_TYPE1_SIZE 0x0eUL
-
-#define PMU_TYPE2_BASE 0x0f0000c0UL
-#define PMU_TYPE2_SIZE 0x10UL
-
-#define PMUCNT2REG 0x06
- #define SOFTRST 0x0010
-
-static void __iomem *pmu_base;
-
-#define pmu_read(offset) readw(pmu_base + (offset))
-#define pmu_write(offset, value) writew((value), pmu_base + (offset))
-
-static void __cpuidle vr41xx_cpu_wait(void)
-{
- local_irq_disable();
- if (!need_resched())
- /*
- * "standby" sets IE bit of the CP0_STATUS to 1.
- */
- __asm__("standby;\n");
- else
- local_irq_enable();
-}
-
-static inline void software_reset(void)
-{
- uint16_t pmucnt2;
-
- switch (current_cpu_type()) {
- case CPU_VR4122:
- case CPU_VR4131:
- case CPU_VR4133:
- pmucnt2 = pmu_read(PMUCNT2REG);
- pmucnt2 |= SOFTRST;
- pmu_write(PMUCNT2REG, pmucnt2);
- break;
- default:
- set_c0_status(ST0_BEV | ST0_ERL);
- change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
- __flush_cache_all();
- write_c0_wired(0);
- __asm__("jr %0"::"r"(0xbfc00000));
- break;
- }
-}
-
-static void vr41xx_restart(char *command)
-{
- local_irq_disable();
- software_reset();
- while (1) ;
-}
-
-static void vr41xx_halt(void)
-{
- local_irq_disable();
- printk(KERN_NOTICE "\nYou can turn off the power supply\n");
- __asm__("hibernate;\n");
-}
-
-static int __init vr41xx_pmu_init(void)
-{
- unsigned long start, size;
-
- switch (current_cpu_type()) {
- case CPU_VR4111:
- case CPU_VR4121:
- start = PMU_TYPE1_BASE;
- size = PMU_TYPE1_SIZE;
- break;
- case CPU_VR4122:
- case CPU_VR4131:
- case CPU_VR4133:
- start = PMU_TYPE2_BASE;
- size = PMU_TYPE2_SIZE;
- break;
- default:
- printk("Unexpected CPU of NEC VR4100 series\n");
- return -ENODEV;
- }
-
- if (request_mem_region(start, size, "PMU") == NULL)
- return -EBUSY;
-
- pmu_base = ioremap(start, size);
- if (pmu_base == NULL) {
- release_mem_region(start, size);
- return -EBUSY;
- }
-
- cpu_wait = vr41xx_cpu_wait;
- _machine_restart = vr41xx_restart;
- _machine_halt = vr41xx_halt;
- pm_power_off = vr41xx_halt;
-
- return 0;
-}
-
-core_initcall(vr41xx_pmu_init);