| Lars Poeschel | f01312d | 2012-11-05 15:48:23 +0100 | [diff] [blame^] | 1 | /* |
| 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 |
| 45 | #define VPRBRD_USB_REQUEST_MAJOR 0xea |
| 46 | #define VPRBRD_USB_REQUEST_MINOR 0xeb |
| 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 header; |
| 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 header; |
| 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__ */ |