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-rw-r--r--arch/frv/kernel/pm.c352
1 files changed, 0 insertions, 352 deletions
diff --git a/arch/frv/kernel/pm.c b/arch/frv/kernel/pm.c
deleted file mode 100644
index 051ccecbf7f1..000000000000
--- a/arch/frv/kernel/pm.c
+++ /dev/null
@@ -1,352 +0,0 @@
-/*
- * FR-V Power Management Routines
- *
- * Copyright (c) 2004 Red Hat, Inc.
- *
- * Based on SA1100 version:
- * Copyright (c) 2001 Cliff Brake <cbrake@accelent.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License.
- *
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/pm.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/sysctl.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/uaccess.h>
-
-#include <asm/mb86943a.h>
-
-#include "local.h"
-
-/*
- * Debug macros
- */
-#define DEBUG
-
-int pm_do_suspend(void)
-{
- local_irq_disable();
-
- __set_LEDS(0xb1);
-
- /* go zzz */
- frv_cpu_suspend(pdm_suspend_mode);
-
- __set_LEDS(0xb2);
-
- local_irq_enable();
-
- return 0;
-}
-
-static unsigned long __irq_mask;
-
-/*
- * Setup interrupt masks, etc to enable wakeup by power switch
- */
-static void __default_power_switch_setup(void)
-{
- /* default is to mask all interrupt sources. */
- __irq_mask = *(unsigned long *)0xfeff9820;
- *(unsigned long *)0xfeff9820 = 0xfffe0000;
-}
-
-/*
- * Cleanup interrupt masks, etc after wakeup by power switch
- */
-static void __default_power_switch_cleanup(void)
-{
- *(unsigned long *)0xfeff9820 = __irq_mask;
-}
-
-/*
- * Return non-zero if wakeup irq was caused by power switch
- */
-static int __default_power_switch_check(void)
-{
- return 1;
-}
-
-void (*__power_switch_wake_setup)(void) = __default_power_switch_setup;
-int (*__power_switch_wake_check)(void) = __default_power_switch_check;
-void (*__power_switch_wake_cleanup)(void) = __default_power_switch_cleanup;
-
-int pm_do_bus_sleep(void)
-{
- local_irq_disable();
-
- /*
- * Here is where we need some platform-dependent setup
- * of the interrupt state so that appropriate wakeup
- * sources are allowed and all others are masked.
- */
- __power_switch_wake_setup();
-
- __set_LEDS(0xa1);
-
- /* go zzz
- *
- * This is in a loop in case power switch shares an irq with other
- * devices. The wake_check() tells us if we need to finish waking
- * or go back to sleep.
- */
- do {
- frv_cpu_suspend(HSR0_PDM_BUS_SLEEP);
- } while (__power_switch_wake_check && !__power_switch_wake_check());
-
- __set_LEDS(0xa2);
-
- /*
- * Here is where we need some platform-dependent restore
- * of the interrupt state prior to being called.
- */
- __power_switch_wake_cleanup();
-
- local_irq_enable();
-
- return 0;
-}
-
-unsigned long sleep_phys_sp(void *sp)
-{
- return virt_to_phys(sp);
-}
-
-#ifdef CONFIG_SYSCTL
-/*
- * Use a temporary sysctl number. Horrid, but will be cleaned up in 2.6
- * when all the PM interfaces exist nicely.
- */
-#define CTL_PM_SUSPEND 1
-#define CTL_PM_CMODE 2
-#define CTL_PM_P0 4
-#define CTL_PM_CM 5
-
-static int user_atoi(char __user *ubuf, size_t len)
-{
- char buf[16];
- unsigned long ret;
-
- if (len > 15)
- return -EINVAL;
-
- if (copy_from_user(buf, ubuf, len))
- return -EFAULT;
-
- buf[len] = 0;
- ret = simple_strtoul(buf, NULL, 0);
- if (ret > INT_MAX)
- return -ERANGE;
- return ret;
-}
-
-/*
- * Send us to sleep.
- */
-static int sysctl_pm_do_suspend(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *fpos)
-{
- int mode;
-
- if (*lenp <= 0)
- return -EIO;
-
- mode = user_atoi(buffer, *lenp);
- switch (mode) {
- case 1:
- return pm_do_suspend();
-
- case 5:
- return pm_do_bus_sleep();
-
- default:
- return -EINVAL;
- }
-}
-
-static int try_set_cmode(int new_cmode)
-{
- if (new_cmode > 15)
- return -EINVAL;
- if (!(clock_cmodes_permitted & (1<<new_cmode)))
- return -EINVAL;
-
- /* now change cmode */
- local_irq_disable();
- frv_dma_pause_all();
-
- frv_change_cmode(new_cmode);
-
- determine_clocks(0);
- time_divisor_init();
-
-#ifdef DEBUG
- determine_clocks(1);
-#endif
- frv_dma_resume_all();
- local_irq_enable();
-
- return 0;
-}
-
-
-static int cmode_procctl(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *fpos)
-{
- int new_cmode;
-
- if (!write)
- return proc_dointvec(ctl, write, buffer, lenp, fpos);
-
- new_cmode = user_atoi(buffer, *lenp);
-
- return try_set_cmode(new_cmode)?:*lenp;
-}
-
-static int try_set_p0(int new_p0)
-{
- unsigned long flags, clkc;
-
- if (new_p0 < 0 || new_p0 > 1)
- return -EINVAL;
-
- local_irq_save(flags);
- __set_PSR(flags & ~PSR_ET);
-
- frv_dma_pause_all();
-
- clkc = __get_CLKC();
- if (new_p0)
- clkc |= CLKC_P0;
- else
- clkc &= ~CLKC_P0;
- __set_CLKC(clkc);
-
- determine_clocks(0);
- time_divisor_init();
-
-#ifdef DEBUG
- determine_clocks(1);
-#endif
- frv_dma_resume_all();
- local_irq_restore(flags);
- return 0;
-}
-
-static int try_set_cm(int new_cm)
-{
- unsigned long flags, clkc;
-
- if (new_cm < 0 || new_cm > 1)
- return -EINVAL;
-
- local_irq_save(flags);
- __set_PSR(flags & ~PSR_ET);
-
- frv_dma_pause_all();
-
- clkc = __get_CLKC();
- clkc &= ~CLKC_CM;
- clkc |= new_cm;
- __set_CLKC(clkc);
-
- determine_clocks(0);
- time_divisor_init();
-
-#if 1 //def DEBUG
- determine_clocks(1);
-#endif
-
- frv_dma_resume_all();
- local_irq_restore(flags);
- return 0;
-}
-
-static int p0_procctl(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *fpos)
-{
- int new_p0;
-
- if (!write)
- return proc_dointvec(ctl, write, buffer, lenp, fpos);
-
- new_p0 = user_atoi(buffer, *lenp);
-
- return try_set_p0(new_p0)?:*lenp;
-}
-
-static int cm_procctl(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *fpos)
-{
- int new_cm;
-
- if (!write)
- return proc_dointvec(ctl, write, buffer, lenp, fpos);
-
- new_cm = user_atoi(buffer, *lenp);
-
- return try_set_cm(new_cm)?:*lenp;
-}
-
-static struct ctl_table pm_table[] =
-{
- {
- .procname = "suspend",
- .data = NULL,
- .maxlen = 0,
- .mode = 0200,
- .proc_handler = sysctl_pm_do_suspend,
- },
- {
- .procname = "cmode",
- .data = &clock_cmode_current,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = cmode_procctl,
- },
- {
- .procname = "p0",
- .data = &clock_p0_current,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = p0_procctl,
- },
- {
- .procname = "cm",
- .data = &clock_cm_current,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = cm_procctl,
- },
- { }
-};
-
-static struct ctl_table pm_dir_table[] =
-{
- {
- .procname = "pm",
- .mode = 0555,
- .child = pm_table,
- },
- { }
-};
-
-/*
- * Initialize power interface
- */
-static int __init pm_init(void)
-{
- register_sysctl_table(pm_dir_table);
- return 0;
-}
-
-__initcall(pm_init);
-
-#endif