Input: ad7879 - support auxiliary GPIOs via gpiolib

Drop the simple fancy sysfs hooks for the aux GPIOs and expose these via
the gpiolib interface so that other drivers can use them.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 8 insertions, 4 deletions

diff --git a/include/linux/spi/ad7879.h b/include/linux/spi/ad7879.h
index 4231104c9afa..6334cee1a3be 100644
--- a/include/linux/spi/ad7879.h
+++ b/include/linux/spi/ad7879.h
@@ -28,8 +28,12 @@ struct ad7879_platform_data {
          * 1 = 4, 2 = 8, 3 = 16 (median > averaging)
          */
         u8      median;
-        /* 1 = AUX/VBAT/GPIO set to GPIO Output */
-        u8      gpio_output;
-        /* Initial GPIO pin state (valid if gpio_output = 1) */
-        u8      gpio_default;
+        /* 1 = AUX/VBAT/GPIO export GPIO to gpiolib
+         * requires CONFIG_GPIOLIB
+         */
+        bool    gpio_export;
+        /* identifies the first GPIO number handled by this chip;
+         * or, if negative, requests dynamic ID allocation.
+         */
+        s32     gpio_base;
 };