Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / include / linux / nfc / pn544.h

diff --git a/include/linux/nfc/pn544.h b/include/linux/nfc/pn544.h
new file mode 100644 (file)
index 0000000..7ab8521
--- /dev/null
+++ b/include/linux/nfc/pn544.h
@@ -0,0 +1,97 @@
+/*
+ * Driver include for the PN544 NFC chip.
+ *
+ * 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 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
+ */
+
+#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)
+
+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];
+};
+
+#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);
+};
+#endif /* __KERNEL__ */
+
+#endif /* _PN544_H_ */