diff options
| author | Lars Poeschel <poeschel@lemonage.de> | 2012-11-05 15:48:23 +0100 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-11-20 12:21:12 +0100 |
| commit | f01312d846016dbd38cc9865e580298fb61f2aa7 (patch) | |
| tree | de82be5e80055f91363e218d099002e72b5bc7d6 /include | |
| parent | b9fbb62eb61452d728c39b2e5020739c575aac53 (diff) | |
mfd: Add viperboard driver
Add mfd driver for Nano River Technologies viperboard.
Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mfd/viperboard.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/include/linux/mfd/viperboard.h b/include/linux/mfd/viperboard.h new file mode 100644 index 000000000000..0d1342466db5 --- /dev/null +++ b/include/linux/mfd/viperboard.h @@ -0,0 +1,105 @@ +/* + * include/linux/mfd/viperboard.h + * + * Nano River Technologies viperboard definitions + * + * (C) 2012 by Lemonage GmbH + * Author: Lars Poeschel <poeschel@lemonage.de> + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#ifndef __MFD_VIPERBOARD_H__ +#define __MFD_VIPERBOARD_H__ + +#include <linux/types.h> +#include <linux/usb.h> + +#define VPRBRD_EP_OUT 0x02 +#define VPRBRD_EP_IN 0x86 + +#define VPRBRD_I2C_MSG_LEN 512 /* max length of a msg on USB level */ + +#define VPRBRD_I2C_FREQ_6MHZ 1 /* 6 MBit/s */ +#define VPRBRD_I2C_FREQ_3MHZ 2 /* 3 MBit/s */ +#define VPRBRD_I2C_FREQ_1MHZ 3 /* 1 MBit/s */ +#define VPRBRD_I2C_FREQ_FAST 4 /* 400 kbit/s */ +#define VPRBRD_I2C_FREQ_400KHZ VPRBRD_I2C_FREQ_FAST +#define VPRBRD_I2C_FREQ_200KHZ 5 /* 200 kbit/s */ +#define VPRBRD_I2C_FREQ_STD 6 /* 100 kbit/s */ +#define VPRBRD_I2C_FREQ_100KHZ VPRBRD_I2C_FREQ_STD +#define VPRBRD_I2C_FREQ_10KHZ 7 /* 10 kbit/s */ + +#define VPRBRD_I2C_CMD_WRITE 0x00 +#define VPRBRD_I2C_CMD_READ 0x01 +#define VPRBRD_I2C_CMD_ADDR 0x02 + +#define VPRBRD_USB_TYPE_OUT 0x40 +#define VPRBRD_USB_TYPE_IN 0xc0 +#define VPRBRD_USB_TIMEOUT_MS 100 +#define VPRBRD_USB_REQUEST_MAJOR 0xea +#define VPRBRD_USB_REQUEST_MINOR 0xeb + +struct vprbrd_i2c_write_hdr { + u8 cmd; + u16 addr; + u8 len1; + u8 len2; + u8 last; + u8 chan; + u16 spi; +} __packed; + +struct vprbrd_i2c_read_hdr { + u8 cmd; + u16 addr; + u8 len0; + u8 len1; + u8 len2; + u8 len3; + u8 len4; + u8 len5; + u16 tf1; /* transfer 1 length */ + u16 tf2; /* transfer 2 length */ +} __packed; + +struct vprbrd_i2c_status { + u8 unknown[11]; + u8 status; +} __packed; + +struct vprbrd_i2c_write_msg { + struct vprbrd_i2c_write_hdr header; + u8 data[VPRBRD_I2C_MSG_LEN + - sizeof(struct vprbrd_i2c_write_hdr)]; +} __packed; + +struct vprbrd_i2c_read_msg { + struct vprbrd_i2c_read_hdr header; + u8 data[VPRBRD_I2C_MSG_LEN + - sizeof(struct vprbrd_i2c_read_hdr)]; +} __packed; + +struct vprbrd_i2c_addr_msg { + u8 cmd; + u8 addr; + u8 unknown1; + u16 len; + u8 unknown2; + u8 unknown3; +} __packed; + +/* Structure to hold all device specific stuff */ +struct vprbrd { + struct usb_device *usb_dev; /* the usb device for this device */ + struct mutex lock; + u8 buf[sizeof(struct vprbrd_i2c_write_msg)]; + struct platform_device pdev; +}; + +#endif /* __MFD_VIPERBOARD_H__ */ |