Initial import

1 files changed, 24 insertions, 0 deletions

diff --git a/include/linux/spi/ad7877.h b/include/linux/spi/ad7877.h
new file mode 100644
index 000000000..cdbed816f
--- /dev/null
+++ b/include/linux/spi/ad7877.h
@@ -0,0 +1,24 @@
+/* linux/spi/ad7877.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 ad7877_platform_data {
+	u16	model;			/* 7877 */
+	u16	vref_delay_usecs;	/* 0 for external vref; etc */
+	u16	x_plate_ohms;
+	u16	y_plate_ohms;
+
+	u16	x_min, x_max;
+	u16	y_min, y_max;
+	u16	pressure_min, pressure_max;
+
+	u8	stopacq_polarity;	/* 1 = Active HIGH, 0 = Active LOW */
+	u8	first_conversion_delay;	/* 0 = 0.5us, 1 = 128us, 2 = 1ms, 3 = 8ms */
+	u8	acquisition_time;	/* 0 = 2us, 1 = 4us, 2 = 8us, 3 = 16us */
+	u8	averaging;		/* 0 = 1, 1 = 4, 2 = 8, 3 = 16 */
+	u8	pen_down_acc_interval;	/* 0 = covert once, 1 = every 0.5 ms,
+					   2 = ever 1 ms,   3 = every 8 ms,*/
+};