1 files changed, 103 insertions, 0 deletions
diff --git a/arch/arm/mach-mx3/pm.c b/arch/arm/mach-mx3/pm.c
new file mode 100644
index 000000000000..68b692283070
--- /dev/null
+++ b/arch/arm/mach-mx3/pm.c
@@ -0,0 +1,103 @@
+/*
+ * linux/arch/arm/mach-mx3/pm.c
+ *
+ * MX3 Power Management Routines
+ *
+ * Original code for the SA11x0:
+ * Copyright (c) 2001 Cliff Brake <cbrake@accelent.com>
+ *
+ * Modified for the PXA250 by Nicolas Pitre:
+ * Copyright (c) 2002 Monta Vista Software, Inc.
+ *
+ * Modified for the OMAP1510 by David Singleton:
+ * Copyright (c) 2002 Monta Vista Software, Inc.
+ *
+ * Cleanup 2004 for OMAP1510/1610 by Dirk Behme <dirk.behme@de.bosch.com>
+ *
+ * Modified for the MX31
+ * Copyright 2005-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/suspend.h>
+#include <linux/regulator/machine.h>
+#include <mach/mxc_pm.h>
+
+/*
+ * TODO: whatta save?
+ */
+
+static int mx31_suspend_enter(suspend_state_t state)
+{
+	printk(KERN_INFO "Hi, from mx31_pm_enter\n");
+	switch (state) {
+	case PM_SUSPEND_MEM:
+		mxc_pm_lowpower(DSM_MODE);
+		break;
+	case PM_SUSPEND_STANDBY:
+		mxc_pm_lowpower(STOP_MODE);
+		break;
+	default:
+		return -1;
+	}
+	return 0;
+}
+
+/*
+ * Called after processes are frozen, but before we shut down devices.
+ */
+static int mx31_suspend_prepare(void)
+{
+	return 0;
+}
+
+/*
+ * Called after devices are re-setup, but before processes are thawed.
+ */
+static void mx31_suspend_finish(void)
+{
+	return;
+}
+
+static int mx31_pm_valid(suspend_state_t state)
+{
+	return (state > PM_SUSPEND_ON && state <= PM_SUSPEND_MAX);
+}
+
+struct platform_suspend_ops mx31_suspend_ops = {
+	.valid = mx31_pm_valid,
+	.prepare = mx31_suspend_prepare,
+	.enter = mx31_suspend_enter,
+	.finish = mx31_suspend_finish,
+};
+
+static int __init mx31_pm_init(void)
+{
+	printk(KERN_INFO "Power Management for Freescale MX31\n");
+	suspend_set_ops(&mx31_suspend_ops);
+
+	return 0;
+}
+
+late_initcall(mx31_pm_init);