Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / spi / ad7879.h

diff --git a/kernel/include/linux/spi/ad7879.h b/kernel/include/linux/spi/ad7879.h
new file mode 100644 (file)
index 0000000..58368be
--- /dev/null
+++ b/kernel/include/linux/spi/ad7879.h
@@ -0,0 +1,41 @@
+/* linux/spi/ad7879.h */
+
+/* Touchscreen characteristics vary between boards and models.  The
+ * platform_data for the device's "struct device" holds this information.
+ *
+ * It's OK if the min/max values are zero.
+ */
+struct ad7879_platform_data {
+       u16     model;                  /* 7879 */
+       u16     x_plate_ohms;
+       u16     x_min, x_max;
+       u16     y_min, y_max;
+       u16     pressure_min, pressure_max;
+
+       bool    swap_xy;                /* swap x and y axes */
+
+       /* [0..255] 0=OFF Starts at 1=550us and goes
+        * all the way to 9.440ms in steps of 35us.
+        */
+       u8      pen_down_acc_interval;
+       /* [0..15] Starts at 0=128us and goes all the
+        * way to 4.096ms in steps of 128us.
+        */
+       u8      first_conversion_delay;
+       /* [0..3] 0 = 2us, 1 = 4us, 2 = 8us, 3 = 16us */
+       u8      acquisition_time;
+       /* [0..3] Average X middle samples 0 = 2, 1 = 4, 2 = 8, 3 = 16 */
+       u8      averaging;
+       /* [0..3] Perform X measurements 0 = OFF,
+        * 1 = 4, 2 = 8, 3 = 16 (median > averaging)
+        */
+       u8      median;
+       /* 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;
+};