1 files changed, 95 insertions, 0 deletions
diff --git a/drivers/modem/modem_u8500.c b/drivers/modem/modem_u8500.c
new file mode 100644
index 00000000000..39951995e8e
--- /dev/null
+++ b/drivers/modem/modem_u8500.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2011
+ *
+ * License Terms: GNU General Public License v2
+ * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
+ *
+ * Platform driver implementing access mechanisms to modem
+ * on U8500 which uses Shared Memroy as IPC between Application
+ * Processor and Modem processor.
+ */
+#include <linux/module.h>
+#include <linux/modem/modem.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/mfd/dbx500-prcmu.h>
+
+static void u8500_modem_request(struct modem_dev *mdev)
+{
+	prcmu_ac_wake_req();
+}
+
+static void u8500_modem_release(struct modem_dev *mdev)
+{
+	prcmu_ac_sleep_req();
+}
+
+static int u8500_modem_is_requested(struct modem_dev *mdev)
+{
+	return prcmu_is_ac_wake_requested();
+}
+
+static struct modem_ops u8500_modem_ops = {
+	.request = u8500_modem_request,
+	.release = u8500_modem_release,
+	.is_requested = u8500_modem_is_requested,
+};
+
+static struct modem_desc u8500_modem_desc = {
+	.name   = "u8500-shrm-modem",
+	.id     = 0,
+	.ops    = &u8500_modem_ops,
+	.owner  = THIS_MODULE,
+};
+
+
+static int __devinit u8500_modem_probe(struct platform_device *pdev)
+{
+	struct modem_dev *mdev;
+	int err;
+
+	mdev = modem_register(&u8500_modem_desc, &pdev->dev,
+			NULL);
+	if (IS_ERR(mdev)) {
+		err = PTR_ERR(mdev);
+		pr_err("failed to register %s: err %i\n",
+				u8500_modem_desc.name, err);
+	}
+
+	return 0;
+}
+
+static int __devexit u8500_modem_remove(struct platform_device *pdev)
+{
+
+	return 0;
+}
+
+static struct platform_driver u8500_modem_driver = {
+	.driver = {
+		.name = "u8500-modem",
+		.owner = THIS_MODULE,
+	},
+	.probe = u8500_modem_probe,
+	.remove = __devexit_p(u8500_modem_remove),
+};
+
+static int __init u8500_modem_init(void)
+{
+	int ret;
+
+	ret = platform_driver_register(&u8500_modem_driver);
+	if (ret < 0) {
+		printk(KERN_ERR "u8500_modem: platform driver reg failed\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static void __exit u8500_modem_exit(void)
+{
+	platform_driver_unregister(&u8500_modem_driver);
+}
+
+arch_initcall(u8500_modem_init);