blob: 193452848c047d6f3f91930fd9c1898888d952d1 [file] [log] [blame]
Lars Poeschelf01312d2012-11-05 15:48:23 +01001/*
2 * include/linux/mfd/viperboard.h
3 *
4 * Nano River Technologies viperboard definitions
5 *
6 * (C) 2012 by Lemonage GmbH
7 * Author: Lars Poeschel <poeschel@lemonage.de>
8 * All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 */
16
17#ifndef __MFD_VIPERBOARD_H__
18#define __MFD_VIPERBOARD_H__
19
20#include <linux/types.h>
21#include <linux/usb.h>
22
23#define VPRBRD_EP_OUT 0x02
24#define VPRBRD_EP_IN 0x86
25
26#define VPRBRD_I2C_MSG_LEN 512 /* max length of a msg on USB level */
27
28#define VPRBRD_I2C_FREQ_6MHZ 1 /* 6 MBit/s */
29#define VPRBRD_I2C_FREQ_3MHZ 2 /* 3 MBit/s */
30#define VPRBRD_I2C_FREQ_1MHZ 3 /* 1 MBit/s */
31#define VPRBRD_I2C_FREQ_FAST 4 /* 400 kbit/s */
32#define VPRBRD_I2C_FREQ_400KHZ VPRBRD_I2C_FREQ_FAST
33#define VPRBRD_I2C_FREQ_200KHZ 5 /* 200 kbit/s */
34#define VPRBRD_I2C_FREQ_STD 6 /* 100 kbit/s */
35#define VPRBRD_I2C_FREQ_100KHZ VPRBRD_I2C_FREQ_STD
36#define VPRBRD_I2C_FREQ_10KHZ 7 /* 10 kbit/s */
37
38#define VPRBRD_I2C_CMD_WRITE 0x00
39#define VPRBRD_I2C_CMD_READ 0x01
40#define VPRBRD_I2C_CMD_ADDR 0x02
41
42#define VPRBRD_USB_TYPE_OUT 0x40
43#define VPRBRD_USB_TYPE_IN 0xc0
44#define VPRBRD_USB_TIMEOUT_MS 100
Lars Poeschel174a13a2012-11-19 16:36:04 +010045#define VPRBRD_USB_REQUEST_I2C_FREQ 0xe6
46#define VPRBRD_USB_REQUEST_I2C 0xe9
Lars Poeschelf01312d2012-11-05 15:48:23 +010047#define VPRBRD_USB_REQUEST_MAJOR 0xea
48#define VPRBRD_USB_REQUEST_MINOR 0xeb
Lars Poeschelffd8a6e2012-11-05 15:48:26 +010049#define VPRBRD_USB_REQUEST_ADC 0xec
Lars Poeschel9d5b72d2012-11-05 15:48:24 +010050#define VPRBRD_USB_REQUEST_GPIOA 0xed
51#define VPRBRD_USB_REQUEST_GPIOB 0xdd
Lars Poeschelf01312d2012-11-05 15:48:23 +010052
53struct vprbrd_i2c_write_hdr {
54 u8 cmd;
55 u16 addr;
56 u8 len1;
57 u8 len2;
58 u8 last;
59 u8 chan;
60 u16 spi;
61} __packed;
62
63struct vprbrd_i2c_read_hdr {
64 u8 cmd;
65 u16 addr;
66 u8 len0;
67 u8 len1;
68 u8 len2;
69 u8 len3;
70 u8 len4;
71 u8 len5;
72 u16 tf1; /* transfer 1 length */
73 u16 tf2; /* transfer 2 length */
74} __packed;
75
76struct vprbrd_i2c_status {
77 u8 unknown[11];
78 u8 status;
79} __packed;
80
81struct vprbrd_i2c_write_msg {
82 struct vprbrd_i2c_write_hdr header;
83 u8 data[VPRBRD_I2C_MSG_LEN
84 - sizeof(struct vprbrd_i2c_write_hdr)];
85} __packed;
86
87struct vprbrd_i2c_read_msg {
88 struct vprbrd_i2c_read_hdr header;
89 u8 data[VPRBRD_I2C_MSG_LEN
90 - sizeof(struct vprbrd_i2c_read_hdr)];
91} __packed;
92
93struct vprbrd_i2c_addr_msg {
94 u8 cmd;
95 u8 addr;
96 u8 unknown1;
97 u16 len;
98 u8 unknown2;
99 u8 unknown3;
100} __packed;
101
102/* Structure to hold all device specific stuff */
103struct vprbrd {
104 struct usb_device *usb_dev; /* the usb device for this device */
105 struct mutex lock;
106 u8 buf[sizeof(struct vprbrd_i2c_write_msg)];
107 struct platform_device pdev;
108};
109
110#endif /* __MFD_VIPERBOARD_H__ */