Thread (28 messages) 28 messages, 7 authors, 2014-11-17

Re: [PATCH 1/4] input: touchscreen: ti_am335x_tsc Interchange touchscreen and ADC steps

From: Richard Cochran <richardcochran@gmail.com>
Date: 2014-11-06 14:28:25
Also in: linux-arm-kernel, linux-devicetree, linux-iio, linux-omap, lkml

On Mon, Oct 27, 2014 at 04:38:28PM +0530, Vignesh R wrote:

...
quoted hunk ↗ jump to hunk
@@ -209,6 +214,7 @@ static void titsc_read_coordinates(struct titsc *ts_dev,
 	unsigned int read, diff;
 	unsigned int i, channel;
 	unsigned int creads = ts_dev->coordinate_readouts;
+	unsigned int first_step = TOTAL_STEPS - (creads * 2 + 2);
 
 	*z1 = *z2 = 0;
 	if (fifocount % (creads * 2 + 2))
@@ -226,7 +232,7 @@ static void titsc_read_coordinates(struct titsc *ts_dev,
 
 		channel = (read & 0xf0000) >> 16;
 		read &= 0xfff;
-		if (channel < creads) {
+		if (channel > first_step + creads + 2) {
 			diff = abs(read - prev_val_x);
 			if (diff < prev_diff_x) {
 				prev_diff_x = diff;
@@ -234,19 +240,19 @@ static void titsc_read_coordinates(struct titsc *ts_dev,
 			}
 			prev_val_x = read;
 
-		} else if (channel < creads * 2) {
+		} else if (channel == first_step + creads + 1) {
+			*z1 = read;
+
+		} else if (channel == first_step + creads + 2) {
+			*z2 = read;
+
+		} else if (channel > first_step) {
 			diff = abs(read - prev_val_y);
 			if (diff < prev_diff_y) {
 				prev_diff_y = diff;
 				*y = read;
While you are at it, please get rid of the this "delta filter"
nonsense.

Thanks,
Richard
 			}
 			prev_val_y = read;
-
-		} else if (channel < creads * 2 + 1) {
-			*z1 = read;
-
-		} else if (channel < creads * 2 + 2) {
-			*z2 = read;
 		}
 	}
 }
-- 
1.9.1


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