26398a70ea
The name of 'struct pm_ops' suggests that it is related to the power management in general, but in fact it is only related to suspend. Moreover, its name should indicate what this structure is used for, so it seems reasonable to change it to 'struct platform_suspend_ops'. In that case, the name of the global variable of this type used by the PM core and the names of related functions should be changed accordingly. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
180 lines
3.9 KiB
C
180 lines
3.9 KiB
C
/*
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* File: arch/blackfin/mach-common/pm.c
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* Based on: arm/mach-omap/pm.c
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* Author: Cliff Brake <cbrake@accelent.com> Copyright (c) 2001
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*
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* Created: 2001
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* Description: Power management for the bfin
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*
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* Modified: Nicolas Pitre - PXA250 support
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* Copyright (c) 2002 Monta Vista Software, Inc.
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* David Singleton - OMAP1510
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* Copyright (c) 2002 Monta Vista Software, Inc.
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* Dirk Behme <dirk.behme@de.bosch.com> - OMAP1510/1610
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* Copyright 2004
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* Copyright 2004-2006 Analog Devices Inc.
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*
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* Bugs: Enter bugs at http://blackfin.uclinux.org/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see the file COPYING, or write
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* to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/suspend.h>
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#include <linux/sched.h>
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#include <linux/proc_fs.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <asm/dpmc.h>
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#include <asm/gpio.h>
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#ifdef CONFIG_PM_WAKEUP_GPIO_POLAR_H
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#define WAKEUP_TYPE PM_WAKE_HIGH
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#endif
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#ifdef CONFIG_PM_WAKEUP_GPIO_POLAR_L
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#define WAKEUP_TYPE PM_WAKE_LOW
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#endif
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#ifdef CONFIG_PM_WAKEUP_GPIO_POLAR_EDGE_F
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#define WAKEUP_TYPE PM_WAKE_FALLING
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#endif
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#ifdef CONFIG_PM_WAKEUP_GPIO_POLAR_EDGE_R
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#define WAKEUP_TYPE PM_WAKE_RISING
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#endif
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#ifdef CONFIG_PM_WAKEUP_GPIO_POLAR_EDGE_B
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#define WAKEUP_TYPE PM_WAKE_BOTH_EDGES
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#endif
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void bfin_pm_suspend_standby_enter(void)
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{
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#ifdef CONFIG_PM_WAKEUP_BY_GPIO
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gpio_pm_wakeup_request(CONFIG_PM_WAKEUP_GPIO_NUMBER, WAKEUP_TYPE);
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#endif
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#if defined(CONFIG_PM_WAKEUP_BY_GPIO) || defined(CONFIG_PM_WAKEUP_GPIO_API)
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{
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u32 flags;
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local_irq_save(flags);
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sleep_deeper(gpio_pm_setup()); /*Goto Sleep*/
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gpio_pm_restore();
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bfin_write_SIC_IWR(IWR_ENABLE_ALL);
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local_irq_restore(flags);
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}
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#endif
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#if defined(CONFIG_PM_WAKEUP_GPIO_BY_SIC_IWR)
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sleep_deeper(CONFIG_PM_WAKEUP_SIC_IWR);
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bfin_write_SIC_IWR(IWR_ENABLE_ALL);
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#endif /* CONFIG_PM_WAKEUP_GPIO_BY_SIC_IWR */
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}
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/*
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* bfin_pm_prepare - Do preliminary suspend work.
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* @state: suspend state we're entering.
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*
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*/
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static int bfin_pm_prepare(suspend_state_t state)
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{
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int error = 0;
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switch (state) {
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case PM_SUSPEND_STANDBY:
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break;
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case PM_SUSPEND_MEM:
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return -ENOTSUPP;
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default:
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return -EINVAL;
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}
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return error;
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}
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/*
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* bfin_pm_enter - Actually enter a sleep state.
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* @state: State we're entering.
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*
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*/
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static int bfin_pm_enter(suspend_state_t state)
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{
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switch (state) {
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case PM_SUSPEND_STANDBY:
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bfin_pm_suspend_standby_enter();
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break;
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case PM_SUSPEND_MEM:
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return -ENOTSUPP;
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default:
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return -EINVAL;
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}
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return 0;
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}
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/*
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* bfin_pm_finish - Finish up suspend sequence.
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* @state: State we're coming out of.
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*
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* This is called after we wake back up (or if entering the sleep state
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* failed).
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*/
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static int bfin_pm_finish(suspend_state_t state)
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{
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switch (state) {
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case PM_SUSPEND_STANDBY:
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break;
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case PM_SUSPEND_MEM:
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return -ENOTSUPP;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int bfin_pm_valid(suspend_state_t state)
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{
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return (state == PM_SUSPEND_STANDBY);
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}
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struct platform_suspend_ops bfin_pm_ops = {
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.prepare = bfin_pm_prepare,
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.enter = bfin_pm_enter,
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.finish = bfin_pm_finish,
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.valid = bfin_pm_valid,
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};
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static int __init bfin_pm_init(void)
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{
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suspend_set_ops(&bfin_pm_ops);
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return 0;
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}
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__initcall(bfin_pm_init);
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