1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/stmpe-ts.c b/drivers/input/touchscreen/stmpe-ts.c
index e414d43e5159..2a78e27b4495 100644
--- a/drivers/input/touchscreen/stmpe-ts.c
+++ b/drivers/input/touchscreen/stmpe-ts.c
@@ -63,6 +63,37 @@
 #define STMPE_TS_NAME			"stmpe-ts"
 #define XY_MASK				0xfff
 
+/**
+ * struct stmpe_touch - stmpe811 touch screen controller state
+ * @stmpe: pointer back to STMPE MFD container
+ * @idev: registered input device
+ * @work: a work item used to scan the device
+ * @dev: a pointer back to the MFD cell struct device*
+ * @sample_time: ADC converstion time in number of clock.
+ * (0 -> 36 clocks, 1 -> 44 clocks, 2 -> 56 clocks, 3 -> 64 clocks,
+ * 4 -> 80 clocks, 5 -> 96 clocks, 6 -> 144 clocks),
+ * recommended is 4.
+ * @mod_12b: ADC Bit mode (0 -> 10bit ADC, 1 -> 12bit ADC)
+ * @ref_sel: ADC reference source
+ * (0 -> internal reference, 1 -> external reference)
+ * @adc_freq: ADC Clock speed
+ * (0 -> 1.625 MHz, 1 -> 3.25 MHz, 2 || 3 -> 6.5 MHz)
+ * @ave_ctrl: Sample average control
+ * (0 -> 1 sample, 1 -> 2 samples, 2 -> 4 samples, 3 -> 8 samples)
+ * @touch_det_delay: Touch detect interrupt delay
+ * (0 -> 10 us, 1 -> 50 us, 2 -> 100 us, 3 -> 500 us,
+ * 4-> 1 ms, 5 -> 5 ms, 6 -> 10 ms, 7 -> 50 ms)
+ * recommended is 3
+ * @settling: Panel driver settling time
+ * (0 -> 10 us, 1 -> 100 us, 2 -> 500 us, 3 -> 1 ms,
+ * 4 -> 5 ms, 5 -> 10 ms, 6 for 50 ms, 7 -> 100 ms)
+ * recommended is 2
+ * @fraction_z: Length of the fractional part in z
+ * (fraction_z ([0..7]) = Count of the fractional part)
+ * recommended is 7
+ * @i_drive: current limit value of the touchscreen drivers
+ * (0 -> 20 mA typical 35 mA max, 1 -> 50 mA typical 80 mA max)
+ */
 struct stmpe_touch {
 	struct stmpe *stmpe;
 	struct input_dev *idev;