android_kernel_motorola_sm6225/drivers/net/sfc/i2c-direct.h
Ben Hutchings 8ceee660aa New driver "sfc" for Solarstorm SFC4000 controller.
The driver supports the 10Xpress PHY and XFP modules on our reference
designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and
SMC10GPCIe-10BT.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29 01:42:43 -04:00

91 lines
2.7 KiB
C

/****************************************************************************
* Driver for Solarflare Solarstorm network controllers and boards
* Copyright 2005 Fen Systems Ltd.
* Copyright 2006 Solarflare Communications Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, incorporated herein by reference.
*/
#ifndef EFX_I2C_DIRECT_H
#define EFX_I2C_DIRECT_H
#include "net_driver.h"
/*
* Direct control of an I2C bus
*/
struct efx_i2c_interface;
/**
* struct efx_i2c_bit_operations - I2C bus direct control methods
*
* I2C bus direct control methods.
*
* @setsda: Set state of SDA line
* @setscl: Set state of SCL line
* @getsda: Get state of SDA line
* @getscl: Get state of SCL line
* @udelay: Delay between each bit operation
* @mdelay: Delay between each byte write
*/
struct efx_i2c_bit_operations {
void (*setsda) (struct efx_i2c_interface *i2c);
void (*setscl) (struct efx_i2c_interface *i2c);
int (*getsda) (struct efx_i2c_interface *i2c);
int (*getscl) (struct efx_i2c_interface *i2c);
unsigned int udelay;
unsigned int mdelay;
};
/**
* struct efx_i2c_interface - an I2C interface
*
* An I2C interface.
*
* @efx: Attached Efx NIC
* @op: I2C bus control methods
* @sda: Current output state of SDA line
* @scl: Current output state of SCL line
*/
struct efx_i2c_interface {
struct efx_nic *efx;
struct efx_i2c_bit_operations *op;
unsigned int sda:1;
unsigned int scl:1;
};
extern int efx_i2c_check_presence(struct efx_i2c_interface *i2c, u8 device_id);
extern int efx_i2c_fast_read(struct efx_i2c_interface *i2c,
u8 device_id, u8 offset,
u8 *data, unsigned int len);
extern int efx_i2c_fast_write(struct efx_i2c_interface *i2c,
u8 device_id, u8 offset,
const u8 *data, unsigned int len);
extern int efx_i2c_read(struct efx_i2c_interface *i2c,
u8 device_id, u8 offset, u8 *data, unsigned int len);
extern int efx_i2c_write(struct efx_i2c_interface *i2c,
u8 device_id, u8 offset,
const u8 *data, unsigned int len);
extern int efx_i2c_send_bytes(struct efx_i2c_interface *i2c, u8 device_id,
const u8 *bytes, unsigned int len);
extern int efx_i2c_recv_bytes(struct efx_i2c_interface *i2c, u8 device_id,
u8 *bytes, unsigned int len);
/* Versions of the API that retry on failure. */
extern int efx_i2c_check_presence_retry(struct efx_i2c_interface *i2c,
u8 device_id);
extern int efx_i2c_read_retry(struct efx_i2c_interface *i2c,
u8 device_id, u8 offset, u8 *data, unsigned int len);
extern int efx_i2c_write_retry(struct efx_i2c_interface *i2c,
u8 device_id, u8 offset,
const u8 *data, unsigned int len);
#endif /* EFX_I2C_DIRECT_H */