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authorDavid Brownell <dbrownell@users.sourceforge.net>2008-02-04 22:28:25 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-05 09:44:13 -0800
commite58b9e2762a6ef99e20dba47aba21b911658541d (patch)
tree0097fbe262bb4d1944bfb3c9a922ec36b90851c5 /drivers/gpio/Kconfig
parent15fae37d9f5f21571a9618d8353164b6ddfea6f6 (diff)
mcp23s08 spi gpio expander support
Basic driver for 8-bit SPI based MCP23S08 GPIO expander, without support for IRQs or the shared chipselect mechanism. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/gpio/Kconfig')
-rw-r--r--drivers/gpio/Kconfig7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 36d5d6aefc0..d924a32c089 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -52,4 +52,11 @@ config GPIO_PCF857X
comment "SPI GPIO expanders:"
+config GPIO_MCP23S08
+ tristate "Microchip MCP23S08 I/O expander"
+ depends on SPI_MASTER
+ help
+ SPI driver for Microchip MCP23S08 I/O expander. This provides
+ a GPIO interface supporting inputs and outputs.
+
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