patch-2.4.6 linux/drivers/acpi/sys.c

• Lines: 147
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.5/linux/drivers/acpi/sys.c
• Orig date: Mon Jan 29 10:15:59 2001

diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/sys.c linux/drivers/acpi/sys.c
@@ -1,146 +0,0 @@
-/*
- *  sys.c - System management (suspend, ...)
- *
- *  Copyright (C) 2000 Andrew Henroid
- *
- *  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.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/kernel.h>
-#include <linux/pm.h>
-#include <linux/acpi.h>
-#include "acpi.h"
-#include "driver.h"
-
-#define _COMPONENT	OS_DEPENDENT
-	MODULE_NAME	("sys")
-
-struct acpi_enter_sx_ctx
-{
-	wait_queue_head_t wait;
-	unsigned int      state;
-};
-
-volatile acpi_sstate_t acpi_sleep_state = ACPI_STATE_S0;
-
-/*
- * Enter system sleep state
- */
-static void
-acpi_enter_sx_async(void *context)
-{
-	struct acpi_enter_sx_ctx *ctx = (struct acpi_enter_sx_ctx*) context;
-	ACPI_OBJECT_LIST arg_list;
-	ACPI_OBJECT arg;
-
-	acpi_enter_sleep_state(ctx->state);
-
-	/* either we are in S1, or the transition failed, as the other states resume
-           from the waking vector */
-	if (ctx->state != ACPI_STATE_S1) {
-		printk(KERN_ERR "Could not enter S%d\n", ctx->state);
-		goto out;
-	}
-
-	/* wait until S1 is entered */
-	while (!(acpi_hw_register_bit_access(ACPI_READ, ACPI_MTX_LOCK, WAK_STS)))
-		safe_halt();
-
-	/* run the _WAK method */
-	memset(&arg_list, 0, sizeof(arg_list));
-	arg_list.count = 1;
-	arg_list.pointer = &arg;
-
-	memset(&arg, 0, sizeof(arg));
-	arg.type = ACPI_TYPE_INTEGER;
-	arg.integer.value = ctx->state;
-
-	acpi_evaluate_object(NULL, "\\_WAK", &arg_list, NULL);
-
- out:
-	acpi_sleep_state = ACPI_STATE_S0;
-
-	if (waitqueue_active(&ctx->wait))
-		wake_up_interruptible(&ctx->wait);
-}
-
-/*
- * Enter soft-off (S5)
- */
-static void
-acpi_power_off(void)
-{
-	struct acpi_enter_sx_ctx ctx;
-	
-	init_waitqueue_head(&ctx.wait);
-	ctx.state = ACPI_STATE_S5;
-	acpi_enter_sx_async(&ctx);
-}
-
-/*
- * Enter system sleep state and wait for completion
- */
-int
-acpi_enter_sx(acpi_sstate_t state)
-{
-	struct acpi_enter_sx_ctx ctx;
-	DECLARE_WAITQUEUE(wait, current);
-	int ret = 0;
-
-	init_waitqueue_head(&ctx.wait);
-	ctx.state = state;
-
-	set_current_state(TASK_INTERRUPTIBLE);
-	add_wait_queue(&ctx.wait, &wait);
-
-	if (acpi_os_queue_for_execution(0, acpi_enter_sx_async, &ctx))
-		ret = -1;
-
-	if (!ret)
-		schedule();
-
-	set_current_state(TASK_RUNNING);
-	remove_wait_queue(&ctx.wait, &wait);
-
-	if (!ret && signal_pending(current))
-		ret = -ERESTARTSYS;
-
-	return ret;
-}
-
-int
-acpi_sys_init(void)
-{
-	u8 sx;
-	u8 type_a;
-	u8 type_b;
-
-	printk(KERN_INFO "ACPI: System firmware supports:");
-
-	for (sx = ACPI_STATE_S0; sx <= ACPI_STATE_S5; sx++) {
-		if (ACPI_SUCCESS(
-			   acpi_hw_obtain_sleep_type_register_data(sx,
-								   &type_a,
-								   &type_b))) {
-
-			printk(" S%d", sx);
-		}
-	}
-	printk("\n");
-	
-	pm_power_off = acpi_power_off;
-
-	return 0;
-}