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0329326e MA |
1 | /* |
2 | * Driver include for the PN544 NFC chip. | |
3 | * | |
4 | * Copyright (C) Nokia Corporation | |
5 | * | |
6 | * Author: Jari Vanhala <ext-jari.vanhala@nokia.com> | |
7 | * Contact: Matti Aaltoenn <matti.j.aaltonen@nokia.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License | |
11 | * version 2 as published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
22 | ||
23 | #ifndef _PN544_H_ | |
24 | #define _PN544_H_ | |
25 | ||
26 | #include <linux/i2c.h> | |
27 | ||
28 | #define PN544_DRIVER_NAME "pn544" | |
29 | #define PN544_MAXWINDOW_SIZE 7 | |
30 | #define PN544_WINDOW_SIZE 4 | |
31 | #define PN544_RETRIES 10 | |
32 | #define PN544_MAX_I2C_TRANSFER 0x0400 | |
33 | #define PN544_MSG_MAX_SIZE 0x21 /* at normal HCI mode */ | |
34 | ||
35 | /* ioctl */ | |
36 | #define PN544_CHAR_BASE 'P' | |
37 | #define PN544_IOR(num, dtype) _IOR(PN544_CHAR_BASE, num, dtype) | |
38 | #define PN544_IOW(num, dtype) _IOW(PN544_CHAR_BASE, num, dtype) | |
39 | #define PN544_GET_FW_MODE PN544_IOW(1, unsigned int) | |
40 | #define PN544_SET_FW_MODE PN544_IOW(2, unsigned int) | |
41 | #define PN544_GET_DEBUG PN544_IOW(3, unsigned int) | |
42 | #define PN544_SET_DEBUG PN544_IOW(4, unsigned int) | |
43 | ||
44 | /* Timing restrictions (ms) */ | |
45 | #define PN544_RESETVEN_TIME 30 /* 7 */ | |
46 | #define PN544_PVDDVEN_TIME 0 | |
47 | #define PN544_VBATVEN_TIME 0 | |
48 | #define PN544_GPIO4VEN_TIME 0 | |
49 | #define PN544_WAKEUP_ACK 5 | |
50 | #define PN544_WAKEUP_GUARD (PN544_WAKEUP_ACK + 1) | |
51 | #define PN544_INACTIVITY_TIME 1000 | |
52 | #define PN544_INTERFRAME_DELAY 200 /* us */ | |
53 | #define PN544_BAUDRATE_CHANGE 150 /* us */ | |
54 | ||
55 | /* Debug bits */ | |
56 | #define PN544_DEBUG_BUF 0x01 | |
57 | #define PN544_DEBUG_READ 0x02 | |
58 | #define PN544_DEBUG_WRITE 0x04 | |
59 | #define PN544_DEBUG_IRQ 0x08 | |
60 | #define PN544_DEBUG_CALLS 0x10 | |
61 | #define PN544_DEBUG_MODE 0x20 | |
62 | ||
63 | /* Normal (HCI) mode */ | |
64 | #define PN544_LLC_HCI_OVERHEAD 3 /* header + crc (to length) */ | |
65 | #define PN544_LLC_MIN_SIZE (1 + PN544_LLC_HCI_OVERHEAD) /* length + */ | |
66 | #define PN544_LLC_MAX_DATA (PN544_MSG_MAX_SIZE - 2) | |
67 | #define PN544_LLC_MAX_HCI_SIZE (PN544_LLC_MAX_DATA - 2) | |
68 | ||
69 | struct pn544_llc_packet { | |
70 | unsigned char length; /* of rest of packet */ | |
71 | unsigned char header; | |
72 | unsigned char data[PN544_LLC_MAX_DATA]; /* includes crc-ccitt */ | |
73 | }; | |
74 | ||
75 | /* Firmware upgrade mode */ | |
76 | #define PN544_FW_HEADER_SIZE 3 | |
77 | /* max fw transfer is 1024bytes, but I2C limits it to 0xC0 */ | |
78 | #define PN544_MAX_FW_DATA (PN544_MAX_I2C_TRANSFER - PN544_FW_HEADER_SIZE) | |
79 | ||
80 | struct pn544_fw_packet { | |
81 | unsigned char command; /* status in answer */ | |
82 | unsigned char length[2]; /* big-endian order (msf) */ | |
83 | unsigned char data[PN544_MAX_FW_DATA]; | |
84 | }; | |
85 | ||
86 | #ifdef __KERNEL__ | |
87 | /* board config */ | |
88 | struct pn544_nfc_platform_data { | |
89 | int (*request_resources) (struct i2c_client *client); | |
90 | void (*free_resources) (void); | |
91 | void (*enable) (int fw); | |
92 | int (*test) (void); | |
93 | void (*disable) (void); | |
94 | }; | |
95 | #endif /* __KERNEL__ */ | |
96 | ||
97 | #endif /* _PN544_H_ */ |