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gpio: Add viperboard gpio driver

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This adds the mfd cell to use the gpio a and gpio b part
of the Nano River Technologies viperboard.

Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Lars Poeschel 2012-11-05 15:48:24 +01:00 • committed by Samuel Ortiz
commit 9d5b72de0d
5 changed files with 536 additions and 0 deletions
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2
include/linux/mfd/viperboard.h
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@ -44,6 +44,8 @@
#define VPRBRD_USB_TIMEOUT_MS 100
#define VPRBRD_USB_REQUEST_MAJOR 0xea
#define VPRBRD_USB_REQUEST_MINOR 0xeb
#define VPRBRD_USB_REQUEST_GPIOA 0xed
#define VPRBRD_USB_REQUEST_GPIOB 0xdd
struct vprbrd_i2c_write_hdr {
u8 cmd;