nfc: initial commit of pn544 nfc driver

Bug 846684
Bug 873017

Reviewed-on: http://git-master/r/55880
(cherry picked from commit 9ed3de486a47dfc8598e73157bccd76ff518048b)

Change-Id: If85503592945bd5967e03ab429f5973dac0c65f7
Reviewed-on: http://git-master/r/62696
Reviewed-by: Varun Colbert <vcolbert@nvidia.com>
Tested-by: Varun Colbert <vcolbert@nvidia.com>

Rebase-Id: R75e0a2682ffd4d007722eaabe19c9cb20d27a9b7

1 files changed, 19 insertions, 83 deletions

diff --git a/include/linux/nfc/pn544.h b/include/linux/nfc/pn544.h
index 7ab8521f2347..9285000dbb46 100644
--- a/include/linux/nfc/pn544.h
+++ b/include/linux/nfc/pn544.h
@@ -1,97 +1,33 @@
 /*
- * Driver include for the PN544 NFC chip.
+ * Copyright (C) 2010 Trusted Logic S.A.
  *
- * Copyright (C) Nokia Corporation
- *
- * Author: Jari Vanhala <ext-jari.vanhala@nokia.com>
- * Contact: Matti Aaltoenn <matti.j.aaltonen@nokia.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
+ * 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 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
+ * 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
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#ifndef _PN544_H_
-#define _PN544_H_
-
-#include <linux/i2c.h>
-
-#define PN544_DRIVER_NAME	"pn544"
-#define PN544_MAXWINDOW_SIZE	7
-#define PN544_WINDOW_SIZE	4
-#define PN544_RETRIES		10
-#define PN544_MAX_I2C_TRANSFER	0x0400
-#define PN544_MSG_MAX_SIZE	0x21 /* at normal HCI mode */
-
-/* ioctl */
-#define PN544_CHAR_BASE		'P'
-#define PN544_IOR(num, dtype)	_IOR(PN544_CHAR_BASE, num, dtype)
-#define PN544_IOW(num, dtype)	_IOW(PN544_CHAR_BASE, num, dtype)
-#define PN544_GET_FW_MODE	PN544_IOW(1, unsigned int)
-#define PN544_SET_FW_MODE	PN544_IOW(2, unsigned int)
-#define PN544_GET_DEBUG		PN544_IOW(3, unsigned int)
-#define PN544_SET_DEBUG		PN544_IOW(4, unsigned int)
-
-/* Timing restrictions (ms) */
-#define PN544_RESETVEN_TIME	30 /* 7 */
-#define PN544_PVDDVEN_TIME	0
-#define PN544_VBATVEN_TIME	0
-#define PN544_GPIO4VEN_TIME	0
-#define PN544_WAKEUP_ACK	5
-#define PN544_WAKEUP_GUARD	(PN544_WAKEUP_ACK + 1)
-#define PN544_INACTIVITY_TIME	1000
-#define PN544_INTERFRAME_DELAY	200 /* us */
-#define PN544_BAUDRATE_CHANGE	150 /* us */
-
-/* Debug bits */
-#define PN544_DEBUG_BUF		0x01
-#define PN544_DEBUG_READ	0x02
-#define PN544_DEBUG_WRITE	0x04
-#define PN544_DEBUG_IRQ		0x08
-#define PN544_DEBUG_CALLS	0x10
-#define PN544_DEBUG_MODE	0x20
-
-/* Normal (HCI) mode */
-#define PN544_LLC_HCI_OVERHEAD	3 /* header + crc (to length) */
-#define PN544_LLC_MIN_SIZE	(1 + PN544_LLC_HCI_OVERHEAD) /* length + */
-#define PN544_LLC_MAX_DATA	(PN544_MSG_MAX_SIZE - 2)
-#define PN544_LLC_MAX_HCI_SIZE	(PN544_LLC_MAX_DATA - 2)
+#define PN544_MAGIC	0xE9
 
-struct pn544_llc_packet {
-	unsigned char length; /* of rest of packet */
-	unsigned char header;
-	unsigned char data[PN544_LLC_MAX_DATA]; /* includes crc-ccitt */
-};
-
-/* Firmware upgrade mode */
-#define PN544_FW_HEADER_SIZE	3
-/* max fw transfer is 1024bytes, but I2C limits it to 0xC0 */
-#define PN544_MAX_FW_DATA	(PN544_MAX_I2C_TRANSFER - PN544_FW_HEADER_SIZE)
-
-struct pn544_fw_packet {
-	unsigned char command; /* status in answer */
-	unsigned char length[2]; /* big-endian order (msf) */
-	unsigned char data[PN544_MAX_FW_DATA];
-};
+/*
+ * PN544 power control via ioctl
+ * PN544_SET_PWR(0): power off
+ * PN544_SET_PWR(1): power on
+ * PN544_SET_PWR(2): reset and power on with firmware download enabled
+ */
+#define PN544_SET_PWR	_IOW(PN544_MAGIC, 0x01, unsigned int)
 
-#ifdef __KERNEL__
-/* board config */
-struct pn544_nfc_platform_data {
-	int (*request_resources) (struct i2c_client *client);
-	void (*free_resources) (void);
-	void (*enable) (int fw);
-	int (*test) (void);
-	void (*disable) (void);
+struct pn544_i2c_platform_data {
+	unsigned int irq_gpio;
+	unsigned int ven_gpio;
+	unsigned int firm_gpio;
 };
-#endif /* __KERNEL__ */
-
-#endif /* _PN544_H_ */