1 files changed, 131 insertions, 0 deletions
diff --git a/drivers/mxc/pmic/core/pmic_common.c b/drivers/mxc/pmic/core/pmic_common.c
new file mode 100644
index 000000000000..7e53121f12b8
--- /dev/null
+++ b/drivers/mxc/pmic/core/pmic_common.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/*!
+ * @file pmic_common.c
+ * @brief This is the common file for the PMIC Core/Protocol driver.
+ *
+ * @ingroup PMIC_CORE
+ */
+
+/*
+ * Includes
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/kthread.h>
+#include <linux/pmic_external.h>
+#include <linux/pmic_status.h>
+
+#include <asm/uaccess.h>
+
+#include "pmic.h"
+
+/*
+ * Global variables
+ */
+pmic_version_t mxc_pmic_version;
+unsigned int active_events[MAX_ACTIVE_EVENTS];
+
+
+static struct completion event_completion;
+static struct task_struct *tstask;
+
+static int pmic_event_thread_func(void *v)
+{
+	unsigned int loop;
+	unsigned int count = 0;
+	unsigned int irq = (int)v;
+
+	while (1) {
+		wait_for_completion_interruptible(
+				&event_completion);
+		if (kthread_should_stop())
+			break;
+
+		count = pmic_get_active_events(
+				active_events);
+		pr_debug("active events number %d\n", count);
+
+	do {
+		for (loop = 0; loop < count; loop++)
+			pmic_event_callback(active_events[loop]);
+
+		count = pmic_get_active_events(active_events);
+
+	} while (count != 0);
+		enable_irq(irq);
+	}
+
+	return 0;
+}
+
+int pmic_start_event_thread(int irq_num)
+{
+	int ret = 0;
+
+	if (tstask)
+		return ret;
+
+	init_completion(&event_completion);
+
+	tstask = kthread_run(pmic_event_thread_func,
+		(void *)irq_num, "pmic-event-thread");
+	ret = IS_ERR(tstask) ? -1 : 0;
+	if (IS_ERR(tstask))
+		tstask = NULL;
+	return ret;
+}
+
+void pmic_stop_event_thread(void)
+{
+	if (tstask) {
+		complete(&event_completion);
+		kthread_stop(tstask);
+	}
+}
+
+/*!
+ * This function is called when pmic interrupt occurs on the processor.
+ * It is the interrupt handler for the pmic module.
+ *
+ * @param        irq        the irq number
+ * @param        dev_id     the pointer on the device
+ *
+ * @return       The function returns IRQ_HANDLED when handled.
+ */
+irqreturn_t pmic_irq_handler(int irq, void *dev_id)
+{
+	disable_irq_nosync(irq);
+	complete(&event_completion);
+
+	return IRQ_HANDLED;
+}
+
+/*!
+ * This function is used to determine the PMIC type and its revision.
+ *
+ * @return      Returns the PMIC type and its revision.
+ */
+
+pmic_version_t pmic_get_version(void)
+{
+	return mxc_pmic_version;
+}
+EXPORT_SYMBOL(pmic_get_version);