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d4cb2ee17d
There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Signed-off-by: Joe Perches <joe@perches.com>
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/*
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* drivers/net/ethernet/ibm/emac/zmii.h
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*
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* Driver for PowerPC 4xx on-chip ethernet controller, ZMII bridge support.
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*
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* Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
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* <benh@kernel.crashing.org>
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*
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* Based on the arch/ppc version of the driver:
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*
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* Copyright (c) 2004, 2005 Zultys Technologies.
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* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
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*
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* Based on original work by
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* Armin Kuster <akuster@mvista.com>
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* Copyright 2001 MontaVista Softare Inc.
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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 __IBM_NEWEMAC_ZMII_H
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#define __IBM_NEWEMAC_ZMII_H
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/* ZMII bridge registers */
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struct zmii_regs {
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u32 fer; /* Function enable reg */
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u32 ssr; /* Speed select reg */
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u32 smiirs; /* SMII status reg */
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};
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/* ZMII device */
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struct zmii_instance {
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struct zmii_regs __iomem *base;
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/* Only one EMAC whacks us at a time */
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struct mutex lock;
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/* subset of PHY_MODE_XXXX */
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int mode;
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/* number of EMACs using this ZMII bridge */
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int users;
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/* FER value left by firmware */
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u32 fer_save;
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/* OF device instance */
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struct platform_device *ofdev;
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};
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#ifdef CONFIG_IBM_EMAC_ZMII
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int zmii_init(void);
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void zmii_exit(void);
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int zmii_attach(struct platform_device *ofdev, int input, int *mode);
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void zmii_detach(struct platform_device *ofdev, int input);
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void zmii_get_mdio(struct platform_device *ofdev, int input);
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void zmii_put_mdio(struct platform_device *ofdev, int input);
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void zmii_set_speed(struct platform_device *ofdev, int input, int speed);
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int zmii_get_regs_len(struct platform_device *ocpdev);
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void *zmii_dump_regs(struct platform_device *ofdev, void *buf);
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#else
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# define zmii_init() 0
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# define zmii_exit() do { } while(0)
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# define zmii_attach(x,y,z) (-ENXIO)
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# define zmii_detach(x,y) do { } while(0)
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# define zmii_get_mdio(x,y) do { } while(0)
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# define zmii_put_mdio(x,y) do { } while(0)
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# define zmii_set_speed(x,y,z) do { } while(0)
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# define zmii_get_regs_len(x) 0
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# define zmii_dump_regs(x,buf) (buf)
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#endif /* !CONFIG_IBM_EMAC_ZMII */
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#endif /* __IBM_NEWEMAC_ZMII_H */
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