nfc: s3fwrn5: Add driver for Samsung S3FWRN5 NFC Chip

Add driver for Samsung S3FWRN5 NFC controller.
S3FWRN5 is using NCI protocol and I2C communication interface.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/nfc/s3fwrn5/nci.h b/drivers/nfc/s3fwrn5/nci.h
new file mode 100644
index 0000000..0e68d43
--- /dev/null
+++ b/drivers/nfc/s3fwrn5/nci.h
@@ -0,0 +1,89 @@
+/*
+ * NCI based driver for Samsung S3FWRN5 NFC chip
+ *
+ * Copyright (C) 2015 Samsung Electrnoics
+ * Robert Baldyga <r.baldyga@samsung.com>
+ *
+ * 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 or later, 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __LOCAL_S3FWRN5_NCI_H_
+#define __LOCAL_S3FWRN5_NCI_H_
+
+#include "s3fwrn5.h"
+
+#define NCI_PROP_AGAIN		0x01
+
+#define NCI_PROP_GET_RFREG	0x21
+#define NCI_PROP_SET_RFREG	0x22
+
+struct nci_prop_set_rfreg_cmd {
+	__u8 index;
+	__u8 data[252];
+};
+
+struct nci_prop_set_rfreg_rsp {
+	__u8 status;
+};
+
+#define NCI_PROP_GET_RFREG_VER	0x24
+
+struct nci_prop_get_rfreg_ver_rsp {
+	__u8 status;
+	__u8 data[8];
+};
+
+#define NCI_PROP_SET_RFREG_VER	0x25
+
+struct nci_prop_set_rfreg_ver_cmd {
+	__u8 data[8];
+};
+
+struct nci_prop_set_rfreg_ver_rsp {
+	__u8 status;
+};
+
+#define NCI_PROP_START_RFREG	0x26
+
+struct nci_prop_start_rfreg_rsp {
+	__u8 status;
+};
+
+#define NCI_PROP_STOP_RFREG	0x27
+
+struct nci_prop_stop_rfreg_cmd {
+	__u16 checksum;
+};
+
+struct nci_prop_stop_rfreg_rsp {
+	__u8 status;
+};
+
+#define NCI_PROP_FW_CFG		0x28
+
+struct nci_prop_fw_cfg_cmd {
+	__u8 clk_type;
+	__u8 clk_speed;
+	__u8 clk_req;
+};
+
+struct nci_prop_fw_cfg_rsp {
+	__u8 status;
+};
+
+#define NCI_PROP_WR_RESET	0x2f
+
+void s3fwrn5_nci_get_prop_ops(struct nci_prop_ops **ops, size_t *n);
+int s3fwrn5_nci_rf_configure(struct s3fwrn5_info *info, const char *fw_name);
+
+#endif /* __LOCAL_S3FWRN5_NCI_H_ */