From 0be25ac4e78f21b42592ee9183c0159efa40270a Mon Sep 17 00:00:00 2001
From: knolax <1339802534.kk@gmail.com>
Date: Fri, 29 Dec 2017 16:12:14 -0500
Subject: added debug prints, testing this in production at the moment, also
 increased the scan period back to 1s.

---
 skey.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/skey.c b/skey.c
index bc94680..070be79 100644
--- a/skey.c
+++ b/skey.c
@@ -165,12 +165,14 @@ int processkey(int row, int column, int state) {
 		break;
 		//if current_keymap is out of range [0,3]
 		default:
+			printk(KERN_ALERT "skey: current_keymap out of bounds\n")
 			return -EINVAL;
 		break;
 	}
-
+	printk("skey: previous KEYSTATE_PHYS for r:%d,c:%d was %d\n", row, column, (KEYSTATE_PHYS & keystate[row][column]));
 	//falling edge
 	if ((KEYSTATE_PHYS & keystate[row][column]) && !state) {
+		printk(KERN_INFO "skey: falling edge detected for r:%d,c:%d\n". row. column);
 		//after the previous keystate is checked, it is updated
 		if (state) {
 			keystate[row][column] = KEYSTATE_PHYS | keystate[row][column];
@@ -186,6 +188,7 @@ int processkey(int row, int column, int state) {
 		}
 	//rising edge
 	}else if (!(KEYSTATE_PHYS & keystate[row][column]) && state) {
+		printk(KERN_INFO "skey: rising edge detected for r:%d,c:%d\n". row. column);
 		//after the previous keystate is checked, it is updated
 		if (state) {
 			keystate[row][column] = KEYSTATE_PHYS | keystate[row][column];
@@ -254,7 +257,7 @@ int processkey(int row, int column, int state) {
 				input_sync(skey_dev);
 				return 0;
 			break;
-			}
+		}
 		//if it's stickymode, toggle the state  stored and send corresponding vent
 		if (stickymode) {
 			//it was high before, so now it's being toggled off
@@ -309,6 +312,7 @@ int skey_update_thread (void *data) {
 				while (column_index < 10) {
 					if (gpio_get_value_cansleep(column_pins[column_index])) {
 						processkey(row_index, column_index, 1);
+						printk(KERN_INFO, "skey:button pressed at r:%d,c:%d\n", row_index, column_index);
 					} else {
 						processkey(row_index, column_index, 0);
 					}
@@ -322,7 +326,7 @@ int skey_update_thread (void *data) {
 		}
 		//sleep 500us= .5ms = 0.0005 seconds
 		// 1 / 0.0005 = 2000 hz	fastest, but it's really 1/0.00052
-		usleep_range(500,500);
+		usleep_range(1000000,1000000);
 		//for when the thread has to stop
 		if (kthread_should_stop()) {
 			 break;
-- 
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