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path: root/drivers/nfc/pn544/mei.c
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Diffstat (limited to 'drivers/nfc/pn544/mei.c')
-rw-r--r--drivers/nfc/pn544/mei.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/nfc/pn544/mei.c b/drivers/nfc/pn544/mei.c
new file mode 100644
index 000000000000..1eb48848a35a
--- /dev/null
+++ b/drivers/nfc/pn544/mei.c
@@ -0,0 +1,121 @@
+/*
+ * HCI based Driver for NXP pn544 NFC Chip
+ *
+ * Copyright (C) 2013 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * 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, write to the
+ * Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/nfc.h>
+#include <net/nfc/hci.h>
+#include <net/nfc/llc.h>
+
+#include "../mei_phy.h"
+#include "pn544.h"
+
+#define PN544_DRIVER_NAME "pn544"
+
+static int pn544_mei_probe(struct mei_cl_device *device,
+ const struct mei_cl_device_id *id)
+{
+ struct nfc_mei_phy *phy;
+ int r;
+
+ pr_info("Probing NFC pn544\n");
+
+ phy = nfc_mei_phy_alloc(device);
+ if (!phy) {
+ pr_err("Cannot allocate memory for pn544 mei phy.\n");
+ return -ENOMEM;
+ }
+
+ r = mei_cl_register_event_cb(device, nfc_mei_event_cb, phy);
+ if (r) {
+ pr_err(PN544_DRIVER_NAME ": event cb registration failed\n");
+ goto err_out;
+ }
+
+ r = pn544_hci_probe(phy, &mei_phy_ops, LLC_NOP_NAME,
+ MEI_NFC_HEADER_SIZE, 0, MEI_NFC_MAX_HCI_PAYLOAD,
+ &phy->hdev);
+ if (r < 0)
+ goto err_out;
+
+ return 0;
+
+err_out:
+ nfc_mei_phy_free(phy);
+
+ return r;
+}
+
+static int pn544_mei_remove(struct mei_cl_device *device)
+{
+ struct nfc_mei_phy *phy = mei_cl_get_drvdata(device);
+
+ pr_info("Removing pn544\n");
+
+ pn544_hci_remove(phy->hdev);
+
+ nfc_mei_phy_disable(phy);
+
+ nfc_mei_phy_free(phy);
+
+ return 0;
+}
+
+static struct mei_cl_device_id pn544_mei_tbl[] = {
+ { PN544_DRIVER_NAME },
+
+ /* required last entry */
+ { }
+};
+MODULE_DEVICE_TABLE(mei, pn544_mei_tbl);
+
+static struct mei_cl_driver pn544_driver = {
+ .id_table = pn544_mei_tbl,
+ .name = PN544_DRIVER_NAME,
+
+ .probe = pn544_mei_probe,
+ .remove = pn544_mei_remove,
+};
+
+static int pn544_mei_init(void)
+{
+ int r;
+
+ pr_debug(DRIVER_DESC ": %s\n", __func__);
+
+ r = mei_cl_driver_register(&pn544_driver);
+ if (r) {
+ pr_err(PN544_DRIVER_NAME ": driver registration failed\n");
+ return r;
+ }
+
+ return 0;
+}
+
+static void pn544_mei_exit(void)
+{
+ mei_cl_driver_unregister(&pn544_driver);
+}
+
+module_init(pn544_mei_init);
+module_exit(pn544_mei_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(DRIVER_DESC);