159198862a
Now one can use the following code #define SMC_IO_SHIFT lp->io_shift to make SMC_IO_SHIFT a variable. This, however, will slightly increase the CPU overhead and have negative impact on the network performance. The tradeoff is, this can be specified in the smc91x platform data so that multiple boards support can be built in a single zImage. Signed-off-by: Eric Miao <eric.miao@marvell.com> Acked-by: Nicolas Pitre <nico@cam.org> Acked-by: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
22 lines
516 B
C
22 lines
516 B
C
#ifndef __SMC91X_H__
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#define __SMC91X_H__
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#define SMC91X_USE_8BIT (1 << 0)
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#define SMC91X_USE_16BIT (1 << 1)
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#define SMC91X_USE_32BIT (1 << 2)
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#define SMC91X_NOWAIT (1 << 3)
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/* two bits for IO_SHIFT, let's hope later designs will keep this sane */
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#define SMC91X_IO_SHIFT_0 (0 << 4)
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#define SMC91X_IO_SHIFT_1 (1 << 4)
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#define SMC91X_IO_SHIFT_2 (2 << 4)
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#define SMC91X_IO_SHIFT_3 (3 << 4)
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#define SMC91X_IO_SHIFT(x) (((x) >> 4) & 0x3)
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struct smc91x_platdata {
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unsigned long flags;
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};
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#endif /* __SMC91X_H__ */
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