onewire: w1-gpio: add ext_pullup_enable pin in platform data

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In the process of porting boards to devicetree implemenation, we should
keep information about external circuitry where they belong - the
individual drivers.

This patch adds a way to specify a GPIO to drive the (optional) external
pull-up logic, rather than using a function pointer for that.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Acked-by: Ville Syrjälä <syrjala@sci.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Daniel Mack 2012-07-25 22:54:29 +02:00 • committed by Greg Kroah-Hartman

parent 5f3d1382e3

commit d2323cf773

2 changed files with 18 additions and 1 deletions

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18

drivers/w1/masters/w1-gpio.c

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1

include/linux/w1-gpio.h

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