1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * include/linux/mfd/viperboard.h |
4 | * |
5 | * Nano River Technologies viperboard definitions |
6 | * |
7 | * (C) 2012 by Lemonage GmbH |
8 | * Author: Lars Poeschel <poeschel@lemonage.de> |
9 | * All rights reserved. |
10 | */ |
11 | |
12 | #ifndef __MFD_VIPERBOARD_H__ |
13 | #define __MFD_VIPERBOARD_H__ |
14 | |
15 | #include <linux/types.h> |
16 | #include <linux/usb.h> |
17 | |
18 | #define VPRBRD_EP_OUT 0x02 |
19 | #define VPRBRD_EP_IN 0x86 |
20 | |
21 | #define VPRBRD_I2C_MSG_LEN 512 /* max length of a msg on USB level */ |
22 | |
23 | #define VPRBRD_I2C_FREQ_6MHZ 1 /* 6 MBit/s */ |
24 | #define VPRBRD_I2C_FREQ_3MHZ 2 /* 3 MBit/s */ |
25 | #define VPRBRD_I2C_FREQ_1MHZ 3 /* 1 MBit/s */ |
26 | #define VPRBRD_I2C_FREQ_FAST 4 /* 400 kbit/s */ |
27 | #define VPRBRD_I2C_FREQ_400KHZ VPRBRD_I2C_FREQ_FAST |
28 | #define VPRBRD_I2C_FREQ_200KHZ 5 /* 200 kbit/s */ |
29 | #define VPRBRD_I2C_FREQ_STD 6 /* 100 kbit/s */ |
30 | #define VPRBRD_I2C_FREQ_100KHZ VPRBRD_I2C_FREQ_STD |
31 | #define VPRBRD_I2C_FREQ_10KHZ 7 /* 10 kbit/s */ |
32 | |
33 | #define VPRBRD_I2C_CMD_WRITE 0x00 |
34 | #define VPRBRD_I2C_CMD_READ 0x01 |
35 | #define VPRBRD_I2C_CMD_ADDR 0x02 |
36 | |
37 | #define VPRBRD_USB_TYPE_OUT 0x40 |
38 | #define VPRBRD_USB_TYPE_IN 0xc0 |
39 | #define VPRBRD_USB_TIMEOUT_MS 100 |
40 | #define VPRBRD_USB_REQUEST_I2C_FREQ 0xe6 |
41 | #define VPRBRD_USB_REQUEST_I2C 0xe9 |
42 | #define VPRBRD_USB_REQUEST_MAJOR 0xea |
43 | #define VPRBRD_USB_REQUEST_MINOR 0xeb |
44 | #define VPRBRD_USB_REQUEST_ADC 0xec |
45 | #define VPRBRD_USB_REQUEST_GPIOA 0xed |
46 | #define VPRBRD_USB_REQUEST_GPIOB 0xdd |
47 | |
48 | struct vprbrd_i2c_write_hdr { |
49 | u8 cmd; |
50 | u16 addr; |
51 | u8 len1; |
52 | u8 len2; |
53 | u8 last; |
54 | u8 chan; |
55 | u16 spi; |
56 | } __packed; |
57 | |
58 | struct vprbrd_i2c_read_hdr { |
59 | u8 cmd; |
60 | u16 addr; |
61 | u8 len0; |
62 | u8 len1; |
63 | u8 len2; |
64 | u8 len3; |
65 | u8 len4; |
66 | u8 len5; |
67 | u16 tf1; /* transfer 1 length */ |
68 | u16 tf2; /* transfer 2 length */ |
69 | } __packed; |
70 | |
71 | struct vprbrd_i2c_status { |
72 | u8 unknown[11]; |
73 | u8 status; |
74 | } __packed; |
75 | |
76 | struct vprbrd_i2c_write_msg { |
77 | struct vprbrd_i2c_write_hdr ; |
78 | u8 data[VPRBRD_I2C_MSG_LEN |
79 | - sizeof(struct vprbrd_i2c_write_hdr)]; |
80 | } __packed; |
81 | |
82 | struct vprbrd_i2c_read_msg { |
83 | struct vprbrd_i2c_read_hdr ; |
84 | u8 data[VPRBRD_I2C_MSG_LEN |
85 | - sizeof(struct vprbrd_i2c_read_hdr)]; |
86 | } __packed; |
87 | |
88 | struct vprbrd_i2c_addr_msg { |
89 | u8 cmd; |
90 | u8 addr; |
91 | u8 unknown1; |
92 | u16 len; |
93 | u8 unknown2; |
94 | u8 unknown3; |
95 | } __packed; |
96 | |
97 | /* Structure to hold all device specific stuff */ |
98 | struct vprbrd { |
99 | struct usb_device *usb_dev; /* the usb device for this device */ |
100 | struct mutex lock; |
101 | u8 buf[sizeof(struct vprbrd_i2c_write_msg)]; |
102 | struct platform_device pdev; |
103 | }; |
104 | |
105 | #endif /* __MFD_VIPERBOARD_H__ */ |
106 | |