From 7b33a26b963567fe06cc289b684775811c7a72ea Mon Sep 17 00:00:00 2001
From: sbrissen <sbrissen@hotmail.com>
Date: Fri, 28 Mar 2014 08:17:17 -0400
Subject: smdk4412: cypress-touchkey - add keydisabler

Change-Id: I85efd4c5b2d6a7283c430f5eca2a730ef6b03d18
---
 drivers/input/keyboard/cypress/cypress-touchkey.c | 41 +++++++++++++++++++++++
 1 file changed, 41 insertions(+)

(limited to 'drivers')

diff --git a/drivers/input/keyboard/cypress/cypress-touchkey.c b/drivers/input/keyboard/cypress/cypress-touchkey.c
index d73ec15..8aafaad 100644
--- a/drivers/input/keyboard/cypress/cypress-touchkey.c
+++ b/drivers/input/keyboard/cypress/cypress-touchkey.c
@@ -673,6 +673,10 @@ static irqreturn_t touchkey_interrupt(int irq, void *dev_id)
 
 	set_touchkey_debug('a');
 
+	if (!atomic_read(&tkey_i2c->keypad_enable)) {
+		return;
+	}
+
 	retry = 3;
 	while (retry--) {
 		ret = i2c_touchkey_read(tkey_i2c->client, KEYCODE_REG, data, 3);
@@ -1411,6 +1415,40 @@ static ssize_t set_touchkey_firm_status_show(struct device *dev,
 	return count;
 }
 
+static ssize_t sec_keypad_enable_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct touchkey_i2c *tkey_i2c = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%d\n", atomic_read(&tkey_i2c->keypad_enable));
+}
+
+static ssize_t sec_keypad_enable_store(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct touchkey_i2c *tkey_i2c = dev_get_drvdata(dev);
+
+	unsigned int val = 0;
+	sscanf(buf, "%d", &val);
+	val = (val == 0 ? 0 : 1);
+	atomic_set(&tkey_i2c->keypad_enable, val);
+	if (val) {
+		set_bit(KEY_BACK, tkey_i2c->input_dev->keybit);
+		set_bit(KEY_MENU, tkey_i2c->input_dev->keybit);
+		set_bit(KEY_HOME, tkey_i2c->input_dev->keybit);
+	} else {
+		clear_bit(KEY_BACK, tkey_i2c->input_dev->keybit);
+		clear_bit(KEY_MENU, tkey_i2c->input_dev->keybit);
+		clear_bit(KEY_HOME, tkey_i2c->input_dev->keybit);
+	}
+	input_sync(tkey_i2c->input_dev);
+
+	return count;
+}
+
+static DEVICE_ATTR(keypad_enable, S_IRUGO|S_IWUSR, sec_keypad_enable_show,
+	      sec_keypad_enable_store);
+
 static DEVICE_ATTR(recommended_version, S_IRUGO | S_IWUSR | S_IWGRP,
 		   touch_version_read, touch_version_write);
 static DEVICE_ATTR(updated_version, S_IRUGO | S_IWUSR | S_IWGRP,
@@ -1496,6 +1534,7 @@ static struct attribute *touchkey_attributes[] = {
 	&dev_attr_touchkey_threshold.attr,
 	&dev_attr_autocal_enable.attr,
 	&dev_attr_autocal_stat.attr,
+	&dev_attr_keypad_enable.attr,
 #endif
 	NULL,
 };
@@ -1563,6 +1602,8 @@ static int i2c_touchkey_probe(struct i2c_client *client,
 	set_bit(LED_MISC, input_dev->ledbit);
 	set_bit(EV_KEY, input_dev->evbit);
 
+	atomic_set(&tkey_i2c->keypad_enable, 1);
+
 	for (i = 1; i < touchkey_count; i++)
 		set_bit(touchkey_keycode[i], input_dev->keybit);
 
-- 
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