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-rw-r--r--arch/blackfin/mach-common/pm.c181
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diff --git a/arch/blackfin/mach-common/pm.c b/arch/blackfin/mach-common/pm.c
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+++ b/arch/blackfin/mach-common/pm.c
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+/*
+ * File: arch/blackfin/mach-common/pm.c
+ * Based on: arm/mach-omap/pm.c
+ * Author: Cliff Brake <cbrake@accelent.com> Copyright (c) 2001
+ *
+ * Created: 2001
+ * Description: Power management for the bfin
+ *
+ * Modified: Nicolas Pitre - PXA250 support
+ * Copyright (c) 2002 Monta Vista Software, Inc.
+ * David Singleton - OMAP1510
+ * Copyright (c) 2002 Monta Vista Software, Inc.
+ * Dirk Behme <dirk.behme@de.bosch.com> - OMAP1510/1610
+ * Copyright 2004
+ * Copyright 2004-2006 Analog Devices Inc.
+ *
+ * Bugs: Enter bugs at http://blackfin.uclinux.org/
+ *
+ * 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, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/pm.h>
+#include <linux/sched.h>
+#include <linux/proc_fs.h>
+
+#include <asm/io.h>
+#include <asm/dpmc.h>
+#include <asm/irq.h>
+
+
+#ifdef CONFIG_PM_WAKEUP_GPIO_POLAR_H
+#define WAKEUP_TYPE PM_WAKE_HIGH
+#endif
+
+#ifdef CONFIG_PM_WAKEUP_GPIO_POLAR_L
+#define WAKEUP_TYPE PM_WAKE_LOW
+#endif
+
+#ifdef CONFIG_PM_WAKEUP_GPIO_POLAR_EDGE_F
+#define WAKEUP_TYPE PM_WAKE_FALLING
+#endif
+
+#ifdef CONFIG_PM_WAKEUP_GPIO_POLAR_EDGE_R
+#define WAKEUP_TYPE PM_WAKE_RISING
+#endif
+
+#ifdef CONFIG_PM_WAKEUP_GPIO_POLAR_EDGE_B
+#define WAKEUP_TYPE PM_WAKE_BOTH_EDGES
+#endif
+
+void bfin_pm_suspend_standby_enter(void)
+{
+#ifdef CONFIG_PM_WAKEUP_BY_GPIO
+ gpio_pm_wakeup_request(CONFIG_PM_WAKEUP_GPIO_NUMBER, WAKEUP_TYPE);
+#endif
+
+#if defined(CONFIG_PM_WAKEUP_BY_GPIO) || defined(CONFIG_PM_WAKEUP_GPIO_API)
+ {
+ u32 flags;
+
+ local_irq_save(flags);
+
+ sleep_deeper(gpio_pm_setup()); /*Goto Sleep*/
+
+ gpio_pm_restore();
+
+ bfin_write_SIC_IWR(IWR_ENABLE_ALL);
+
+ local_irq_restore(flags);
+ }
+#endif
+
+#if defined(CONFIG_PM_WAKEUP_GPIO_BY_SIC_IWR)
+ sleep_deeper(CONFIG_PM_WAKEUP_SIC_IWR);
+ bfin_write_SIC_IWR(IWR_ENABLE_ALL);
+#endif /* CONFIG_PM_WAKEUP_GPIO_BY_SIC_IWR */
+}
+
+
+/*
+ * bfin_pm_prepare - Do preliminary suspend work.
+ * @state: suspend state we're entering.
+ *
+ */
+static int bfin_pm_prepare(suspend_state_t state)
+{
+ int error = 0;
+
+ switch (state) {
+ case PM_SUSPEND_STANDBY:
+ break;
+ case PM_SUSPEND_MEM:
+ return -ENOTSUPP;
+
+ case PM_SUSPEND_DISK:
+ return -ENOTSUPP;
+
+ default:
+ return -EINVAL;
+ }
+
+ return error;
+}
+
+/*
+ * bfin_pm_enter - Actually enter a sleep state.
+ * @state: State we're entering.
+ *
+ */
+static int bfin_pm_enter(suspend_state_t state)
+{
+ switch (state) {
+ case PM_SUSPEND_STANDBY:
+ bfin_pm_suspend_standby_enter();
+ break;
+ case PM_SUSPEND_MEM:
+ return -ENOTSUPP;
+
+ case PM_SUSPEND_DISK:
+ return -ENOTSUPP;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * bfin_pm_finish - Finish up suspend sequence.
+ * @state: State we're coming out of.
+ *
+ * This is called after we wake back up (or if entering the sleep state
+ * failed).
+ */
+static int bfin_pm_finish(suspend_state_t state)
+{
+ switch (state) {
+ case PM_SUSPEND_STANDBY:
+ break;
+
+ case PM_SUSPEND_MEM:
+ return -ENOTSUPP;
+
+ case PM_SUSPEND_DISK:
+ return -ENOTSUPP;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+struct pm_ops bfin_pm_ops = {
+ .pm_disk_mode = PM_DISK_PLATFORM,
+ .prepare = bfin_pm_prepare,
+ .enter = bfin_pm_enter,
+ .finish = bfin_pm_finish,
+};
+
+static int __init bfin_pm_init(void)
+{
+ pm_set_ops(&bfin_pm_ops);
+ return 0;
+}
+
+__initcall(bfin_pm_init);