korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-25 05:04:09 +08:00
Code Issues Packages Projects Releases Wiki Activity

sh: APM/PM support.

Browse Source 
This adds some simple PM stubs and the basic APM interfaces,
primarily for use by hp6xx, where the existing userland
expects it.

Signed-off-by: Andriy Skulysh <askulysh@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Andriy Skulysh 2006-09-27 16:20:22 +09:00 committed by Paul Mundt
parent ef48e8e349
commit 3aa770e797
21 changed files with 1124 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/sh/Kconfig
View File

@ -638,6 +638,16 @@ source "fs/Kconfig.binfmt"
endmenu
menu "Power management options (EXPERIMENTAL)"
depends on EXPERIMENTAL
source kernel/power/Kconfig
config APM
bool "Advanced Power Management Emulation"
depends on PM
endmenu
source "net/Kconfig"
source "drivers/Kconfig"

5
arch/sh/boards/hp6xx/Makefile
View File

@ -2,5 +2,8 @@
# Makefile for the HP6xx specific parts of the kernel
#
obj-y := mach.o setup.o
obj-y := mach.o setup.o
obj-$(CONFIG_PM) += pm.o pm_wakeup.o
obj-$(CONFIG_APM) += hp6xx_apm.o

123
arch/sh/boards/hp6xx/hp6xx_apm.c Normal file
View File

@ -0,0 +1,123 @@
/*
* bios-less APM driver for hp680
*
* Copyright 2005 (c) Andriy Skulysh <askulysh@gmail.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/config.h>
#include <linux/module.h>
#include <linux/apm_bios.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/io.h>
#include <asm/apm.h>
#include <asm/adc.h>
#include <asm/hp6xx/hp6xx.h>
#define SH7709_PGDR 0xa400012c
#define APM_CRITICAL 10
#define APM_LOW 30
#define HP680_BATTERY_MAX 875
#define HP680_BATTERY_MIN 600
#define HP680_BATTERY_AC_ON 900
#define MODNAME "hp6x0_apm"
static int hp6x0_apm_get_info(char *buf, char **start, off_t fpos, int length)
{
u8 pgdr;
char *p;
int battery_status;
int battery_flag;
int ac_line_status;
int time_units = APM_BATTERY_LIFE_UNKNOWN;
int battery = adc_single(ADC_CHANNEL_BATTERY);
int backup = adc_single(ADC_CHANNEL_BACKUP);
int charging = adc_single(ADC_CHANNEL_CHARGE);
int percentage;
percentage = 100 * (battery - HP680_BATTERY_MIN) /
(HP680_BATTERY_MAX - HP680_BATTERY_MIN);
ac_line_status = (battery > HP680_BATTERY_AC_ON) ?
APM_AC_ONLINE : APM_AC_OFFLINE;
p = buf;
pgdr = ctrl_inb(SH7709_PGDR);
if (pgdr & PGDR_MAIN_BATTERY_OUT) {
battery_status = APM_BATTERY_STATUS_NOT_PRESENT;
battery_flag = 0x80;
percentage = -1;
} else if (charging < 8 ) {
battery_status = APM_BATTERY_STATUS_CHARGING;
battery_flag = 0x08;
ac_line_status = 0xff;
} else if (percentage <= APM_CRITICAL) {
battery_status = APM_BATTERY_STATUS_CRITICAL;
battery_flag = 0x04;
} else if (percentage <= APM_LOW) {
battery_status = APM_BATTERY_STATUS_LOW;
battery_flag = 0x02;
} else {
battery_status = APM_BATTERY_STATUS_HIGH;
battery_flag = 0x01;
}
p += sprintf(p, "1.0 1.2 0x%02x 0x%02x 0x%02x 0x%02x %d%% %d %s\n",
APM_32_BIT_SUPPORT,
ac_line_status,
battery_status,
battery_flag,
percentage,
time_units,
"min");
p += sprintf(p, "bat=%d backup=%d charge=%d\n",
battery, backup, charging);
return p - buf;
}
static irqreturn_t hp6x0_apm_interrupt(int irq, void *dev, struct pt_regs *regs)
{
if (!apm_suspended)
apm_queue_event(APM_USER_SUSPEND);
return IRQ_HANDLED;
}
static int __init hp6x0_apm_init(void)
{
int ret;
ret = request_irq(HP680_BTN_IRQ, hp6x0_apm_interrupt,
SA_INTERRUPT, MODNAME, 0);
if (unlikely(ret < 0)) {
printk(KERN_ERR MODNAME ": IRQ %d request failed\n",
HP680_BTN_IRQ);
return ret;
}
apm_get_info = hp6x0_apm_get_info;
return ret;
}
static void __exit hp6x0_apm_exit(void)
{
free_irq(HP680_BTN_IRQ, 0);
apm_get_info = 0;
}
module_init(hp6x0_apm_init);
module_exit(hp6x0_apm_exit);
MODULE_AUTHOR("Adriy Skulysh");
MODULE_DESCRIPTION("hp6xx Advanced Power Management");
MODULE_LICENSE("GPL");

88
arch/sh/boards/hp6xx/pm.c Normal file
View File

@ -0,0 +1,88 @@
/*
* hp6x0 Power Management Routines
*
* Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.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/config.h>
#include <linux/init.h>
#include <linux/suspend.h>
#include <linux/errno.h>
#include <linux/time.h>
#include <asm/io.h>
#include <asm/hd64461.h>
#include <asm/hp6xx/hp6xx.h>
#include <asm/cpu/dac.h>
#include <asm/pm.h>
#define STBCR 0xffffff82
#define STBCR2 0xffffff88
static int hp6x0_pm_enter(suspend_state_t state)
{
u8 stbcr, stbcr2;
#ifdef CONFIG_HD64461_ENABLER
u8 scr;
u16 hd64461_stbcr;
#endif
if (state != PM_SUSPEND_MEM)
return -EINVAL;
#ifdef CONFIG_HD64461_ENABLER
outb(0, HD64461_PCC1CSCIER);
scr = inb(HD64461_PCC1SCR);
scr |= HD64461_PCCSCR_VCC1;
outb(scr, HD64461_PCC1SCR);
hd64461_stbcr = inw(HD64461_STBCR);
hd64461_stbcr |= HD64461_STBCR_SPC1ST;
outw(hd64461_stbcr, HD64461_STBCR);
#endif
ctrl_outb(0x1f, DACR);
stbcr = ctrl_inb(STBCR);
ctrl_outb(0x01, STBCR);
stbcr2 = ctrl_inb(STBCR2);
ctrl_outb(0x7f , STBCR2);
outw(0xf07f, HD64461_SCPUCR);
pm_enter();
outw(0, HD64461_SCPUCR);
ctrl_outb(stbcr, STBCR);
ctrl_outb(stbcr2, STBCR2);
#ifdef CONFIG_HD64461_ENABLER
hd64461_stbcr = inw(HD64461_STBCR);
hd64461_stbcr &= ~HD64461_STBCR_SPC1ST;
outw(hd64461_stbcr, HD64461_STBCR);
outb(0x4c, HD64461_PCC1CSCIER);
outb(0x00, HD64461_PCC1CSCR);
#endif
return 0;
}
/*
* Set to PM_DISK_FIRMWARE so we can quickly veto suspend-to-disk.
*/
static struct pm_ops hp6x0_pm_ops = {
.pm_disk_mode = PM_DISK_FIRMWARE,
.enter = hp6x0_pm_enter,
};
static int __init hp6x0_pm_init(void)
{
pm_set_ops(&hp6x0_pm_ops);
return 0;
}
late_initcall(hp6x0_pm_init);

58
arch/sh/boards/hp6xx/pm_wakeup.S Normal file
View File

@ -0,0 +1,58 @@
/*
* Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
*/
#include <linux/linkage.h>
#include <asm/cpu/mmu_context.h>
#define k0 r0
#define k1 r1
#define k2 r2
#define k3 r3
#define k4 r4
/*
* Kernel mode register usage:
* k0 scratch
* k1 scratch
* k2 scratch (Exception code)
* k3 scratch (Return address)
* k4 scratch
* k5 reserved
* k6 Global Interrupt Mask (0--15 << 4)
* k7 CURRENT_THREAD_INFO (pointer to current thread info)
*/
ENTRY(wakeup_start)
! clear STBY bit
mov #-126, k2
and #127, k0
mov.b k0, @k2
! enable refresh
mov.l 5f, k1
mov.w 6f, k0
mov.w k0, @k1
! jump to handler
mov.l 2f, k2
mov.l 3f, k3
mov.l @k2, k2
mov.l 4f, k1
jmp @k1
nop
.align 2
1: .long EXPEVT
2: .long INTEVT
3: .long ret_from_irq
4: .long handle_exception
5: .long 0xffffff68
6: .word 0x0524
ENTRY(wakeup_end)
nop

14
arch/sh/boards/hp6xx/setup.c
View File

@ -15,6 +15,9 @@
#include <asm/hp6xx/hp6xx.h>
#include <asm/cpu/dac.h>
#define SCPCR 0xa4000116
#define SCPDR 0xa4000136
const char *get_system_type(void)
{
return "HP6xx";
@ -24,6 +27,7 @@ int __init platform_setup(void)
{
u8 v8;
u16 v;
v = inw(HD64461_STBCR);
v |= HD64461_STBCR_SURTST | HD64461_STBCR_SIRST |
HD64461_STBCR_STM1ST | HD64461_STBCR_STM0ST |
@ -50,5 +54,15 @@ int __init platform_setup(void)
v8 &= ~DACR_DAE;
ctrl_outb(v8,DACR);
v8 = ctrl_inb(SCPDR);
v8 |= SCPDR_TS_SCAN_X | SCPDR_TS_SCAN_Y;
v8 &= ~SCPDR_TS_SCAN_ENABLE;
ctrl_outb(v8, SCPDR);
v = ctrl_inw(SCPCR);
v &= ~SCPCR_TS_MASK;
v |= SCPCR_TS_ENABLE;
ctrl_outw(v, SCPCR);
return 0;
}

2
arch/sh/kernel/Makefile
View File

@ -18,3 +18,5 @@ obj-$(CONFIG_SH_CPU_FREQ) += cpufreq.o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
obj-$(CONFIG_APM) += apm.o
obj-$(CONFIG_PM) += pm.o

539
arch/sh/kernel/apm.c Normal file
View File

@ -0,0 +1,539 @@
/*
* bios-less APM driver for hp680
*
* Copyright 2005 (c) Andriy Skulysh <askulysh@gmail.com>
*
* based on ARM APM driver by
* Jamey Hicks <jamey@crl.dec.com>
*
* adapted from the APM BIOS driver for Linux by
* Stephen Rothwell (sfr@linuxcare.com)
*
* APM 1.2 Reference:
* Intel Corporation, Microsoft Corporation. Advanced Power Management
* (APM) BIOS Interface Specification, Revision 1.2, February 1996.
*
* [This document is available from Microsoft at:
* http://www.microsoft.com/hwdev/busbios/amp_12.htm]
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/poll.h>
#include <linux/timer.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/miscdevice.h>
#include <linux/apm_bios.h>
#include <linux/pm.h>
#include <linux/pm_legacy.h>
#include <asm/apm.h>
#define MODNAME "apm"
/*
* The apm_bios device is one of the misc char devices.
* This is its minor number.
*/
#define APM_MINOR_DEV 134
/*
* Maximum number of events stored
*/
#define APM_MAX_EVENTS 16
struct apm_queue {
unsigned int event_head;
unsigned int event_tail;
apm_event_t events[APM_MAX_EVENTS];
};
/*
* The per-file APM data
*/
struct apm_user {
struct list_head list;
unsigned int suser: 1;
unsigned int writer: 1;
unsigned int reader: 1;
int suspend_result;
unsigned int suspend_state;
#define SUSPEND_NONE 0 /* no suspend pending */
#define SUSPEND_PENDING 1 /* suspend pending read */
#define SUSPEND_READ 2 /* suspend read, pending ack */
#define SUSPEND_ACKED 3 /* suspend acked */
#define SUSPEND_DONE 4 /* suspend completed */
struct apm_queue queue;
};
/*
* Local variables
*/
static int suspends_pending;
static DECLARE_WAIT_QUEUE_HEAD(apm_waitqueue);
static DECLARE_WAIT_QUEUE_HEAD(apm_suspend_waitqueue);
/*
* This is a list of everyone who has opened /dev/apm_bios
*/
static DECLARE_RWSEM(user_list_lock);
static LIST_HEAD(apm_user_list);
/*
* kapmd info. kapmd provides us a process context to handle
* "APM" events within - specifically necessary if we're going
* to be suspending the system.
*/
static DECLARE_WAIT_QUEUE_HEAD(kapmd_wait);
static DECLARE_COMPLETION(kapmd_exit);
static DEFINE_SPINLOCK(kapmd_queue_lock);
static struct apm_queue kapmd_queue;
int apm_suspended;
EXPORT_SYMBOL(apm_suspended);
/* Platform-specific apm_read_proc(). */
int (*apm_get_info)(char *buf, char **start, off_t fpos, int length);
EXPORT_SYMBOL(apm_get_info);
/*
* APM event queue management.
*/
static inline int queue_empty(struct apm_queue *q)
{
return q->event_head == q->event_tail;
}
static inline apm_event_t queue_get_event(struct apm_queue *q)
{
q->event_tail = (q->event_tail + 1) % APM_MAX_EVENTS;
return q->events[q->event_tail];
}
static void queue_add_event(struct apm_queue *q, apm_event_t event)
{
q->event_head = (q->event_head + 1) % APM_MAX_EVENTS;
if (q->event_head == q->event_tail) {
static int notified;
if (notified++ == 0)
printk(KERN_ERR "apm: an event queue overflowed\n");
q->event_tail = (q->event_tail + 1) % APM_MAX_EVENTS;
}
q->events[q->event_head] = event;
}
static void queue_event_one_user(struct apm_user *as, apm_event_t event)
{
if (as->suser && as->writer) {
switch (event) {
case APM_SYS_SUSPEND:
case APM_USER_SUSPEND:
/*
* If this user already has a suspend pending,
* don't queue another one.
*/
if (as->suspend_state != SUSPEND_NONE)
return;
as->suspend_state = SUSPEND_PENDING;
suspends_pending++;
break;
}
}
queue_add_event(&as->queue, event);
}
static void queue_event(apm_event_t event, struct apm_user *sender)
{
struct apm_user *as;
down_read(&user_list_lock);
list_for_each_entry(as, &apm_user_list, list)
if (as != sender && as->reader)
queue_event_one_user(as, event);
up_read(&user_list_lock);
wake_up_interruptible(&apm_waitqueue);
}
/**
* apm_queue_event - queue an APM event for kapmd
* @event: APM event
*
* Queue an APM event for kapmd to process and ultimately take the
* appropriate action. Only a subset of events are handled:
* %APM_LOW_BATTERY
* %APM_POWER_STATUS_CHANGE
* %APM_USER_SUSPEND
* %APM_SYS_SUSPEND
* %APM_CRITICAL_SUSPEND
*/
void apm_queue_event(apm_event_t event)
{
spin_lock_irq(&kapmd_queue_lock);
queue_add_event(&kapmd_queue, event);
spin_unlock_irq(&kapmd_queue_lock);
wake_up_interruptible(&kapmd_wait);
}
EXPORT_SYMBOL(apm_queue_event);
static void apm_suspend(void)
{
struct apm_user *as;
int err;
apm_suspended = 1;
err = pm_suspend(PM_SUSPEND_MEM);
/*
* Anyone on the APM queues will think we're still suspended.
* Send a message so everyone knows we're now awake again.
*/
queue_event(APM_NORMAL_RESUME, NULL);
/*
* Finally, wake up anyone who is sleeping on the suspend.
*/
down_read(&user_list_lock);
list_for_each_entry(as, &apm_user_list, list) {
as->suspend_result = err;
as->suspend_state = SUSPEND_DONE;
}
up_read(&user_list_lock);
wake_up(&apm_suspend_waitqueue);
apm_suspended = 0;
}
static ssize_t apm_read(struct file *fp, char __user *buf,
size_t count, loff_t *ppos)
{
struct apm_user *as = fp->private_data;
apm_event_t event;
int i = count, ret = 0;
if (count < sizeof(apm_event_t))
return -EINVAL;
if (queue_empty(&as->queue) && fp->f_flags & O_NONBLOCK)
return -EAGAIN;
wait_event_interruptible(apm_waitqueue, !queue_empty(&as->queue));
while ((i >= sizeof(event)) && !queue_empty(&as->queue)) {
event = queue_get_event(&as->queue);
ret = -EFAULT;
if (copy_to_user(buf, &event, sizeof(event)))
break;
if (event == APM_SYS_SUSPEND || event == APM_USER_SUSPEND)
as->suspend_state = SUSPEND_READ;
buf += sizeof(event);
i -= sizeof(event);
}
if (i < count)
ret = count - i;
return ret;
}
static unsigned int apm_poll(struct file *fp, poll_table * wait)
{
struct apm_user *as = fp->private_data;
poll_wait(fp, &apm_waitqueue, wait);
return queue_empty(&as->queue) ? 0 : POLLIN | POLLRDNORM;
}
/*
* apm_ioctl - handle APM ioctl
*
* APM_IOC_SUSPEND
* This IOCTL is overloaded, and performs two functions. It is used to:
* - initiate a suspend
* - acknowledge a suspend read from /dev/apm_bios.
* Only when everyone who has opened /dev/apm_bios with write permission
* has acknowledge does the actual suspend happen.
*/
static int
apm_ioctl(struct inode * inode, struct file *filp, u_int cmd, u_long arg)
{
struct apm_user *as = filp->private_data;
unsigned long flags;
int err = -EINVAL;
if (!as->suser || !as->writer)
return -EPERM;
switch (cmd) {
case APM_IOC_SUSPEND:
as->suspend_result = -EINTR;
if (as->suspend_state == SUSPEND_READ) {
/*
* If we read a suspend command from /dev/apm_bios,
* then the corresponding APM_IOC_SUSPEND ioctl is
* interpreted as an acknowledge.
*/
as->suspend_state = SUSPEND_ACKED;
suspends_pending--;
} else {
/*
* Otherwise it is a request to suspend the system.
* Queue an event for all readers, and expect an
* acknowledge from all writers who haven't already
* acknowledged.
*/
queue_event(APM_USER_SUSPEND, as);
}
/*
* If there are no further acknowledges required, suspend
* the system.
*/
if (suspends_pending == 0)
apm_suspend();
/*
* Wait for the suspend/resume to complete. If there are
* pending acknowledges, we wait here for them.
*
* Note that we need to ensure that the PM subsystem does
* not kick us out of the wait when it suspends the threads.
*/
flags = current->flags;
current->flags |= PF_NOFREEZE;
/*
* Note: do not allow a thread which is acking the suspend
* to escape until the resume is complete.
*/
if (as->suspend_state == SUSPEND_ACKED)
wait_event(apm_suspend_waitqueue,
as->suspend_state == SUSPEND_DONE);
else
wait_event_interruptible(apm_suspend_waitqueue,
as->suspend_state == SUSPEND_DONE);
current->flags = flags;
err = as->suspend_result;
as->suspend_state = SUSPEND_NONE;
break;
}
return err;
}
static int apm_release(struct inode * inode, struct file * filp)
{
struct apm_user *as = filp->private_data;
filp->private_data = NULL;
down_write(&user_list_lock);
list_del(&as->list);
up_write(&user_list_lock);
/*
* We are now unhooked from the chain. As far as new
* events are concerned, we no longer exist. However, we
* need to balance suspends_pending, which means the
* possibility of sleeping.
*/
if (as->suspend_state != SUSPEND_NONE) {
suspends_pending -= 1;
if (suspends_pending == 0)
apm_suspend();
}
kfree(as);
return 0;
}
static int apm_open(struct inode * inode, struct file * filp)
{
struct apm_user *as;
as = kzalloc(sizeof(*as), GFP_KERNEL);
if (as) {
/*
* XXX - this is a tiny bit broken, when we consider BSD
* process accounting. If the device is opened by root, we
* instantly flag that we used superuser privs. Who knows,
* we might close the device immediately without doing a
* privileged operation -- cevans
*/
as->suser = capable(CAP_SYS_ADMIN);
as->writer = (filp->f_mode & FMODE_WRITE) == FMODE_WRITE;
as->reader = (filp->f_mode & FMODE_READ) == FMODE_READ;
down_write(&user_list_lock);
list_add(&as->list, &apm_user_list);
up_write(&user_list_lock);
filp->private_data = as;
}
return as ? 0 : -ENOMEM;
}
static struct file_operations apm_bios_fops = {
.owner = THIS_MODULE,
.read = apm_read,
.poll = apm_poll,
.ioctl = apm_ioctl,
.open = apm_open,
.release = apm_release,
};
static struct miscdevice apm_device = {
.minor = APM_MINOR_DEV,
.name = "apm_bios",
.fops = &apm_bios_fops
};
#ifdef CONFIG_PROC_FS
/*
* Arguments, with symbols from linux/apm_bios.h.
*
* 0) Linux driver version (this will change if format changes)
* 1) APM BIOS Version. Usually 1.0, 1.1 or 1.2.
* 2) APM flags from APM Installation Check (0x00):
* bit 0: APM_16_BIT_SUPPORT
* bit 1: APM_32_BIT_SUPPORT
* bit 2: APM_IDLE_SLOWS_CLOCK
* bit 3: APM_BIOS_DISABLED
* bit 4: APM_BIOS_DISENGAGED
* 3) AC line status
* 0x00: Off-line
* 0x01: On-line
* 0x02: On backup power (BIOS >= 1.1 only)
* 0xff: Unknown
* 4) Battery status
* 0x00: High
* 0x01: Low
* 0x02: Critical
* 0x03: Charging
* 0x04: Selected battery not present (BIOS >= 1.2 only)
* 0xff: Unknown
* 5) Battery flag
* bit 0: High
* bit 1: Low
* bit 2: Critical
* bit 3: Charging
* bit 7: No system battery
* 0xff: Unknown
* 6) Remaining battery life (percentage of charge):
* 0-100: valid
* -1: Unknown
* 7) Remaining battery life (time units):
* Number of remaining minutes or seconds
* -1: Unknown
* 8) min = minutes; sec = seconds
*/
static int apm_read_proc(char *buf, char **start, off_t fpos, int length)
{
if (likely(apm_get_info))
return apm_get_info(buf, start, fpos, length);
return -EINVAL;
}
#endif
static int kapmd(void *arg)
{
daemonize("kapmd");
current->flags |= PF_NOFREEZE;
do {
apm_event_t event;
wait_event_interruptible(kapmd_wait,
!queue_empty(&kapmd_queue) || !pm_active);
if (!pm_active)
break;
spin_lock_irq(&kapmd_queue_lock);
event = 0;
if (!queue_empty(&kapmd_queue))
event = queue_get_event(&kapmd_queue);
spin_unlock_irq(&kapmd_queue_lock);
switch (event) {
case 0:
break;
case APM_LOW_BATTERY:
case APM_POWER_STATUS_CHANGE:
queue_event(event, NULL);
break;
case APM_USER_SUSPEND:
case APM_SYS_SUSPEND:
queue_event(event, NULL);
if (suspends_pending == 0)
apm_suspend();
break;
case APM_CRITICAL_SUSPEND:
apm_suspend();
break;
}
} while (1);
complete_and_exit(&kapmd_exit, 0);
}
static int __init apm_init(void)
{
int ret;
pm_active = 1;
ret = kernel_thread(kapmd, NULL, CLONE_KERNEL);
if (unlikely(ret < 0)) {
pm_active = 0;
return ret;
}
create_proc_info_entry("apm", 0, NULL, apm_read_proc);
ret = misc_register(&apm_device);
if (unlikely(ret != 0)) {
remove_proc_entry("apm", NULL);
pm_active = 0;
wake_up(&kapmd_wait);
wait_for_completion(&kapmd_exit);
}
return ret;
}
static void __exit apm_exit(void)
{
misc_deregister(&apm_device);
remove_proc_entry("apm", NULL);
pm_active = 0;
wake_up(&kapmd_wait);
wait_for_completion(&kapmd_exit);
}
module_init(apm_init);
module_exit(apm_exit);
MODULE_AUTHOR("Stephen Rothwell, Andriy Skulysh");
MODULE_DESCRIPTION("Advanced Power Management");
MODULE_LICENSE("GPL");

4
arch/sh/kernel/entry.S
View File

@ -308,7 +308,7 @@ ENTRY(exception_error)
.align 2
ret_from_exception:
preempt_stop()
ret_from_irq:
ENTRY(ret_from_irq)
!
mov #OFF_SR, r0
mov.l @(r0,r15), r0 ! get status register
@ -704,7 +704,7 @@ interrupt:
!
!
.align 2
handle_exception:
ENTRY(handle_exception)
! Using k0, k1 for scratch registers (r0_bank1, r1_bank),
! save all registers onto stack.
!

88
arch/sh/kernel/pm.c Normal file
View File

@ -0,0 +1,88 @@
/*
* Generic Power Management Routine
*
* Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.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/suspend.h>
#include <linux/delay.h>
#include <linux/gfp.h>
#include <asm/freq.h>
#include <asm/io.h>
#include <asm/watchdog.h>
#include <asm/pm.h>
#define INTR_OFFSET 0x600
#define STBCR 0xffffff82
#define STBCR2 0xffffff88
#define STBCR_STBY 0x80
#define STBCR_MSTP2 0x04
#define MCR 0xffffff68
#define RTCNT 0xffffff70
#define MCR_RMODE 2
#define MCR_RFSH 4
void pm_enter(void)
{
u8 stbcr, csr;
u16 frqcr, mcr;
u32 vbr_new, vbr_old;
set_bl_bit();
/* set wdt */
csr = sh_wdt_read_csr();
csr &= ~WTCSR_TME;
csr |= WTCSR_CKS_4096;
sh_wdt_write_csr(csr);
csr = sh_wdt_read_csr();
sh_wdt_write_cnt(0);
/* disable PLL1 */
frqcr = ctrl_inw(FRQCR);
frqcr &= ~(FRQCR_PLLEN | FRQCR_PSTBY);
ctrl_outw(frqcr, FRQCR);
/* enable standby */
stbcr = ctrl_inb(STBCR);
ctrl_outb(stbcr | STBCR_STBY | STBCR_MSTP2, STBCR);
/* set self-refresh */
mcr = ctrl_inw(MCR);
ctrl_outw(mcr & ~MCR_RFSH, MCR);
/* set interrupt handler */
asm volatile("stc vbr, %0" : "=r" (vbr_old));
vbr_new = get_zeroed_page(GFP_ATOMIC);
udelay(50);
memcpy((void*)(vbr_new + INTR_OFFSET),
&wakeup_start, &wakeup_end - &wakeup_start);
asm volatile("ldc %0, vbr" : : "r" (vbr_new));
ctrl_outw(0, RTCNT);
ctrl_outw(mcr | MCR_RFSH | MCR_RMODE, MCR);
cpu_sleep();
asm volatile("ldc %0, vbr" : : "r" (vbr_old));
free_page(vbr_new);
/* enable PLL1 */
frqcr = ctrl_inw(FRQCR);
frqcr |= FRQCR_PSTBY;
ctrl_outw(frqcr, FRQCR);
udelay(50);
frqcr |= FRQCR_PLLEN;
ctrl_outw(frqcr, FRQCR);
ctrl_outb(stbcr, STBCR);
clear_bl_bit();
}

4
arch/sh/kernel/sh_ksyms.c
View File

@ -116,6 +116,10 @@ EXPORT_SYMBOL(__down_trylock);
EXPORT_SYMBOL(synchronize_irq);
#endif
#ifdef CONFIG_PM
EXPORT_SYMBOL(pm_suspend);
#endif
EXPORT_SYMBOL(csum_partial);
#ifdef CONFIG_IPV6
EXPORT_SYMBOL(csum_ipv6_magic);

25
arch/sh/kernel/time.c
View File

@ -143,8 +143,33 @@ void handle_timer_tick(struct pt_regs *regs)
}
}
#ifdef CONFIG_PM
int timer_suspend(struct sys_device *dev, pm_message_t state)
{
struct sys_timer *sys_timer = container_of(dev, struct sys_timer, dev);
sys_timer->ops->stop();
return 0;
}
int timer_resume(struct sys_device *dev)
{
struct sys_timer *sys_timer = container_of(dev, struct sys_timer, dev);
sys_timer->ops->start();
return 0;
}
#else
#define timer_suspend NULL
#define timer_resume NULL
#endif
static struct sysdev_class timer_sysclass = {
set_kset_name("timer"),
.suspend = timer_suspend,
.resume = timer_resume,
};
static int __init timer_init_sysfs(void)

18
arch/sh/kernel/timers/timer-tmu.c
View File

@ -188,6 +188,18 @@ static struct clk tmu0_clk = {
.ops = &tmu_clk_ops,
};
static int tmu_timer_start(void)
{
ctrl_outb(TMU_TSTR_INIT, TMU_TSTR);
return 0;
}
static int tmu_timer_stop(void)
{
ctrl_outb(0, TMU_TSTR);
return 0;
}
static int tmu_timer_init(void)
{
unsigned long interval;
@ -197,7 +209,7 @@ static int tmu_timer_init(void)
tmu0_clk.parent = clk_get("module_clk");
/* Start TMU0 */
ctrl_outb(0, TMU_TSTR);
tmu_timer_stop();
#if !defined(CONFIG_CPU_SUBTYPE_SH7300) && !defined(CONFIG_CPU_SUBTYPE_SH7760)
ctrl_outb(TMU_TOCR_INIT, TMU_TOCR);
#endif
@ -211,13 +223,15 @@ static int tmu_timer_init(void)
ctrl_outl(interval, TMU0_TCOR);
ctrl_outl(interval, TMU0_TCNT);
ctrl_outb(TMU_TSTR_INIT, TMU_TSTR);
tmu_timer_start();
return 0;
}
struct sys_timer_ops tmu_timer_ops = {
.init = tmu_timer_init,
.start = tmu_timer_start,
.stop = tmu_timer_stop,
.get_frequency = tmu_timer_get_frequency,
.get_offset = tmu_timer_get_offset,
};

14
drivers/input/touchscreen/hp680_ts_input.c
View File

@ -15,7 +15,6 @@
#define HP680_TS_ABS_Y_MIN 80
#define HP680_TS_ABS_Y_MAX 910
#define SCPCR 0xa4000116
#define PHDR 0xa400012e
#define SCPDR 0xa4000136
@ -77,19 +76,6 @@ static irqreturn_t hp680_ts_interrupt(int irq, void *dev, struct pt_regs *regs)
static int __init hp680_ts_init(void)
{
u8 scpdr;
u16 scpcr;
scpdr = ctrl_inb(SCPDR);
scpdr |= SCPDR_TS_SCAN_X | SCPDR_TS_SCAN_Y;
scpdr &= ~SCPDR_TS_SCAN_ENABLE;
ctrl_outb(scpdr, SCPDR);
scpcr = ctrl_inw(SCPCR);
scpcr &= ~SCPCR_TS_MASK;
scpcr |= SCPCR_TS_ENABLE;
ctrl_outw(scpcr, SCPCR);
hp680_ts_dev = input_allocate_device();
if (!hp680_ts_dev)
return -ENOMEM;

46
include/asm-sh/apm.h Normal file
View File

@ -0,0 +1,46 @@
/*
* Copyright 2006 (c) Andriy Skulysh <askulysh@gmail.com>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
*/
#ifndef __ASM_SH_APM_H
#define __ASM_SH_APM_H
#define APM_AC_OFFLINE 0
#define APM_AC_ONLINE 1
#define APM_AC_BACKUP 2
#define APM_AC_UNKNOWN 0xff
#define APM_BATTERY_STATUS_HIGH 0
#define APM_BATTERY_STATUS_LOW 1
#define APM_BATTERY_STATUS_CRITICAL 2
#define APM_BATTERY_STATUS_CHARGING 3
#define APM_BATTERY_STATUS_NOT_PRESENT 4
#define APM_BATTERY_STATUS_UNKNOWN 0xff
#define APM_BATTERY_LIFE_UNKNOWN 0xFFFF
#define APM_BATTERY_LIFE_MINUTES 0x8000
#define APM_BATTERY_LIFE_VALUE_MASK 0x7FFF
#define APM_BATTERY_FLAG_HIGH (1 << 0)
#define APM_BATTERY_FLAG_LOW (1 << 1)
#define APM_BATTERY_FLAG_CRITICAL (1 << 2)
#define APM_BATTERY_FLAG_CHARGING (1 << 3)
#define APM_BATTERY_FLAG_NOT_PRESENT (1 << 7)
#define APM_BATTERY_FLAG_UNKNOWN 0xff
#define APM_UNITS_MINS 0
#define APM_UNITS_SECS 1
#define APM_UNITS_UNKNOWN -1
extern int (*apm_get_info)(char *buf, char **start, off_t fpos, int length);
extern int apm_suspended;
void apm_queue_event(apm_event_t event);
#endif

4
include/asm-sh/cpu-sh3/freq.h
View File

@ -18,5 +18,9 @@
#define MIN_DIVISOR_NR 0
#define MAX_DIVISOR_NR 4
#define FRQCR_CKOEN 0x0100
#define FRQCR_PLLEN 0x0080
#define FRQCR_PSTBY 0x0040
#endif /* __ASM_CPU_SH3_FREQ_H */

7
include/asm-sh/hd64461.h
View File

@ -40,7 +40,12 @@
#define HD64461_LCDCBAR 0x11000
#define HD64461_LCDCLOR 0x11002
#define HD64461_LCDCCR 0x11004
#define HD64461_LCDCCR_MOFF 0x80
#define HD64461_LCDCCR_STBACK 0x0400
#define HD64461_LCDCCR_STREQ 0x0100
#define HD64461_LCDCCR_MOFF 0x0080
#define HD64461_LCDCCR_REFSEL 0x0040
#define HD64461_LCDCCR_EPON 0x0020
#define HD64461_LCDCCR_SPON 0x0010
#define HD64461_LDR1 0x11010
#define HD64461_LDR1_DON 0x01

53
include/asm-sh/hp6xx/hp6xx.h
View File

@ -2,16 +2,33 @@
#define __ASM_SH_HP6XX_H
/*
* Copyright (C) 2003 Andriy Skulysh
* Copyright (C) 2003, 2004, 2005 Andriy Skulysh
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
*/
#define HP680_TS_IRQ IRQ3_IRQ
#define HP680_BTN_IRQ IRQ0_IRQ
#define HP680_TS_IRQ IRQ3_IRQ
#define HP680_HD64461_IRQ IRQ4_IRQ
#define DAC_LCD_BRIGHTNESS 0
#define DAC_SPEAKER_VOLUME 1
#define PGDR_OPENED 0x01
#define PGDR_MAIN_BATTERY_OUT 0x04
#define PGDR_PLAY_BUTTON 0x08
#define PGDR_REWIND_BUTTON 0x10
#define PGDR_RECORD_BUTTON 0x20
#define PHDR_TS_PEN_DOWN 0x08
#define PJDR_LED_BLINK 0x02
#define PKDR_LED_GREEN 0x10
#define SCPDR_TS_SCAN_ENABLE 0x20
#define SCPDR_TS_SCAN_Y 0x02
#define SCPDR_TS_SCAN_X 0x01
@ -21,11 +38,43 @@
#define ADC_CHANNEL_TS_Y 1
#define ADC_CHANNEL_TS_X 2
#define ADC_CHANNEL_BATTERY 3
#define ADC_CHANNEL_BACKUP 4
#define ADC_CHANNEL_CHARGE 5
#define HD64461_GPADR_SPEAKER 0x01
#define HD64461_GPADR_PCMCIA0 (0x02|0x08)
#define HD64461_GPBDR_LCDOFF 0x01
#define HD64461_GPBDR_LCD_CONTRAST_MASK 0x78
#define HD64461_GPBDR_LED_RED 0x80
#include <asm/hd64461.h>
#include <asm/io.h>
#define PJDR 0xa4000130
#define PKDR 0xa4000132
static inline void hp6xx_led_red(int on)
{
u16 v16;
v16 = ctrl_inw(CONFIG_HD64461_IOBASE + HD64461_GPBDR - 0x10000);
if (on)
ctrl_outw(v16 & (~HD64461_GPBDR_LED_RED), CONFIG_HD64461_IOBASE + HD64461_GPBDR - 0x10000);
else
ctrl_outw(v16 | HD64461_GPBDR_LED_RED, CONFIG_HD64461_IOBASE + HD64461_GPBDR - 0x10000);
}
static inline void hp6xx_led_green(int on)
{
u8 v8;
v8 = ctrl_inb(PKDR);
if (on)
ctrl_outb(v8 & (~PKDR_LED_GREEN), PKDR);
else
ctrl_outb(v8 | PKDR_LED_GREEN, PKDR);
}
#endif /* __ASM_SH_HP6XX_H */

17
include/asm-sh/pm.h Normal file
View File

@ -0,0 +1,17 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright 2006 (c) Andriy Skulysh <askulysh@gmail.com>
*
*/
#ifndef __ASM_SH_PM_H
#define __ASM_SH_PM_H
extern u8 wakeup_start;
extern u8 wakeup_end;
void pm_enter(void);
#endif

25
include/asm-sh/system.h
View File

@ -172,6 +172,31 @@ static __inline__ void local_irq_disable(void)
: "memory");
}
static __inline__ void set_bl_bit(void)
{
unsigned long __dummy0, __dummy1;
__asm__ __volatile__ ("stc sr, %0\n\t"
"or %2, %0\n\t"
"and %3, %0\n\t"
"ldc %0, sr"
: "=&r" (__dummy0), "=r" (__dummy1)
: "r" (0x10000000), "r" (0xffffff0f)
: "memory");
}
static __inline__ void clear_bl_bit(void)
{
unsigned long __dummy0, __dummy1;
__asm__ __volatile__ ("stc sr, %0\n\t"
"and %2, %0\n\t"
"ldc %0, sr"
: "=&r" (__dummy0), "=r" (__dummy1)
: "1" (~0x10000000)
: "memory");
}
#define local_save_flags(x) \
__asm__("stc sr, %0; and #0xf0, %0" : "=&z" (x) :/**/: "memory" )

2
include/asm-sh/timer.h
View File

@ -6,6 +6,8 @@
struct sys_timer_ops {
int (*init)(void);
int (*start)(void);
int (*stop)(void);
unsigned long (*get_offset)(void);
unsigned long (*get_frequency)(void);
};