linux-kernel - [PATCH 20/23 v6] Input: atmel_mxt_ts - refactor reportid checking in mxt

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Message-Id: <1340888904-15620-21-git-send-email-djkurtz@chromium.org>
Date:	Thu, 28 Jun 2012 21:08:21 +0800
From:	Daniel Kurtz <djkurtz@...omium.org>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Henrik Rydberg <rydberg@...omail.se>,
	Joonyoung Shim <jy0922.shim@...sung.com>,
	Nick Dyer <nick.dyer@...ev.co.uk>,
	Yufeng Shen <miletus@...omium.org>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Olof Johansson <olof@...om.net>,
	Benson Leung <bleung@...omium.org>,
	Daniel Kurtz <djkurtz@...omium.org>
Subject: [PATCH 20/23 v6] Input: atmel_mxt_ts - refactor reportid checking in mxt_interrupt

This small refactor is in preparation for checking more report types
in the mxt_interrupt message processing loop.

Signed-off-by: Daniel Kurtz <djkurtz@...omium.org>
---
 drivers/input/touchscreen/atmel_mxt_ts.c |   14 ++++++++------
 1 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 48f3637..a9e0b54 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -554,6 +554,12 @@ static void mxt_input_touchevent(struct mxt_data *data,
 	input_sync(input_dev);
 }
 
+static bool mxt_is_T9_message(struct mxt_data *data, struct mxt_message *msg)
+{
+	u8 id = msg->reportid;
+	return (id >= data->T9_reportid_min && id <= data->T9_reportid_max);
+}
+
 static irqreturn_t mxt_interrupt(int irq, void *dev_id)
 {
 	struct mxt_data *data = dev_id;
@@ -561,8 +567,6 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id)
 	struct device *dev = &data->client->dev;
 	int id;
 	u8 reportid;
-	u8 max_reportid;
-	u8 min_reportid;
 
 	do {
 		if (mxt_read_message(data, &message)) {
@@ -572,11 +576,9 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id)
 
 		reportid = message.reportid;
 
-		max_reportid = data->T9_reportid_max;
-		min_reportid = data->T9_reportid_min;
-		id = reportid - min_reportid;
+		id = reportid - data->T9_reportid_min;
 
-		if (reportid >= min_reportid && reportid <= max_reportid)
+		if (mxt_is_T9_message(data, &message))
 			mxt_input_touchevent(data, &message, id);
 		else
 			mxt_dump_message(dev, &message);
-- 
1.7.7.3

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