ffd8a6e7a7
This adds the mfd cell to use the adc part of the Nano River Technologies viperboard. Signed-off-by: Lars Poeschel <poeschel@lemonage.de> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
111 lines
3.0 KiB
C
111 lines
3.0 KiB
C
/*
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* include/linux/mfd/viperboard.h
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*
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* Nano River Technologies viperboard definitions
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*
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* (C) 2012 by Lemonage GmbH
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* Author: Lars Poeschel <poeschel@lemonage.de>
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#ifndef __MFD_VIPERBOARD_H__
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#define __MFD_VIPERBOARD_H__
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#include <linux/types.h>
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#include <linux/usb.h>
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#define VPRBRD_EP_OUT 0x02
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#define VPRBRD_EP_IN 0x86
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#define VPRBRD_I2C_MSG_LEN 512 /* max length of a msg on USB level */
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#define VPRBRD_I2C_FREQ_6MHZ 1 /* 6 MBit/s */
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#define VPRBRD_I2C_FREQ_3MHZ 2 /* 3 MBit/s */
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#define VPRBRD_I2C_FREQ_1MHZ 3 /* 1 MBit/s */
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#define VPRBRD_I2C_FREQ_FAST 4 /* 400 kbit/s */
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#define VPRBRD_I2C_FREQ_400KHZ VPRBRD_I2C_FREQ_FAST
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#define VPRBRD_I2C_FREQ_200KHZ 5 /* 200 kbit/s */
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#define VPRBRD_I2C_FREQ_STD 6 /* 100 kbit/s */
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#define VPRBRD_I2C_FREQ_100KHZ VPRBRD_I2C_FREQ_STD
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#define VPRBRD_I2C_FREQ_10KHZ 7 /* 10 kbit/s */
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#define VPRBRD_I2C_CMD_WRITE 0x00
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#define VPRBRD_I2C_CMD_READ 0x01
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#define VPRBRD_I2C_CMD_ADDR 0x02
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#define VPRBRD_USB_TYPE_OUT 0x40
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#define VPRBRD_USB_TYPE_IN 0xc0
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#define VPRBRD_USB_TIMEOUT_MS 100
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#define VPRBRD_USB_REQUEST_I2C_FREQ 0xe6
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#define VPRBRD_USB_REQUEST_I2C 0xe9
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#define VPRBRD_USB_REQUEST_MAJOR 0xea
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#define VPRBRD_USB_REQUEST_MINOR 0xeb
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#define VPRBRD_USB_REQUEST_ADC 0xec
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#define VPRBRD_USB_REQUEST_GPIOA 0xed
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#define VPRBRD_USB_REQUEST_GPIOB 0xdd
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struct vprbrd_i2c_write_hdr {
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u8 cmd;
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u16 addr;
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u8 len1;
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u8 len2;
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u8 last;
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u8 chan;
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u16 spi;
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} __packed;
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struct vprbrd_i2c_read_hdr {
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u8 cmd;
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u16 addr;
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u8 len0;
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u8 len1;
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u8 len2;
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u8 len3;
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u8 len4;
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u8 len5;
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u16 tf1; /* transfer 1 length */
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u16 tf2; /* transfer 2 length */
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} __packed;
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struct vprbrd_i2c_status {
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u8 unknown[11];
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u8 status;
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} __packed;
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struct vprbrd_i2c_write_msg {
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struct vprbrd_i2c_write_hdr header;
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u8 data[VPRBRD_I2C_MSG_LEN
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- sizeof(struct vprbrd_i2c_write_hdr)];
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} __packed;
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struct vprbrd_i2c_read_msg {
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struct vprbrd_i2c_read_hdr header;
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u8 data[VPRBRD_I2C_MSG_LEN
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- sizeof(struct vprbrd_i2c_read_hdr)];
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} __packed;
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struct vprbrd_i2c_addr_msg {
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u8 cmd;
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u8 addr;
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u8 unknown1;
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u16 len;
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u8 unknown2;
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u8 unknown3;
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} __packed;
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/* Structure to hold all device specific stuff */
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struct vprbrd {
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struct usb_device *usb_dev; /* the usb device for this device */
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struct mutex lock;
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u8 buf[sizeof(struct vprbrd_i2c_write_msg)];
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struct platform_device pdev;
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};
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#endif /* __MFD_VIPERBOARD_H__ */
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