wire: export w1_touch_bit
The w1_ds28e17 driver from the next part of this patch needs to emit single-bit read timeslots to the DS28E17. The w1 subsystem already has this function but it is not exported outside drivers/w1/w1_io.c This subpatch exports the w1_touch_bit symbol with EXPORT_SYMBOL_GPL, same as the other exported symbols in drivers/w1/w1_io.c May be also useful later for writing drivers for other Onewire chips which do single-bit communication. Signed-off-by: Jan Kandziora <jjj@gmx.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -58,7 +58,7 @@ static u8 w1_read_bit(struct w1_master *dev);
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* @dev: the master device
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* @bit: 0 - write a 0, 1 - write a 0 read the level
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*/
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static u8 w1_touch_bit(struct w1_master *dev, int bit)
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u8 w1_touch_bit(struct w1_master *dev, int bit)
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{
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if (dev->bus_master->touch_bit)
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return dev->bus_master->touch_bit(dev->bus_master->data, bit);
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@ -69,6 +69,7 @@ static u8 w1_touch_bit(struct w1_master *dev, int bit)
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return 0;
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}
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}
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EXPORT_SYMBOL_GPL(w1_touch_bit);
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/**
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* w1_write_bit() - Generates a write-0 or write-1 cycle.
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@ -293,6 +293,7 @@ void w1_unregister_family(struct w1_family *family);
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w1_unregister_family)
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u8 w1_triplet(struct w1_master *dev, int bdir);
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u8 w1_touch_bit(struct w1_master *dev, int bit);
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void w1_write_8(struct w1_master *, u8);
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u8 w1_read_8(struct w1_master *);
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int w1_reset_bus(struct w1_master *);
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