From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Felipe F. Tonello" Subject: [PATCH] input: egalax: Send touch end event when is about to suspend Date: Tue, 10 Dec 2013 16:03:16 -0800 Message-ID: <1386720196-5821-1-git-send-email-eu@felipetonello.com> Return-path: Received: from mail-ob0-f180.google.com ([209.85.214.180]:63758 "EHLO mail-ob0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750965Ab3LKADW (ORCPT ); Tue, 10 Dec 2013 19:03:22 -0500 Received: by mail-ob0-f180.google.com with SMTP id wo20so6065823obc.25 for ; Tue, 10 Dec 2013 16:03:22 -0800 (PST) Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: linux-kernel@vger.kernel.org Cc: linux-input@vger.kernel.org, Andy Shevchenko , Sachin Kamat , Heiko Abraham , Dmitry Torokhov , "Felipe F. Tonello" From: "Felipe F. Tonello" This is useful to report for users of this device that don't know anything about the suspension of the device. So users will receive a touch end event when the device is about to suspend, making it more user friendly. One example of users is the X Server with the evdev input driver. This patch make sure that the X server will propagate a touch end event to its windows. Signed-off-by: Felipe F. Tonello --- drivers/input/touchscreen/egalax_ts.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/input/touchscreen/egalax_ts.c b/drivers/input/touchscreen/egalax_ts.c index 054d225..1f21f0d 100644 --- a/drivers/input/touchscreen/egalax_ts.c +++ b/drivers/input/touchscreen/egalax_ts.c @@ -63,6 +63,7 @@ struct egalax_ts { struct i2c_client *client; struct input_dev *input_dev; + bool ids_in_use[MAX_SUPPORT_POINTS]; }; static irqreturn_t egalax_ts_interrupt(int irq, void *dev_id) @@ -117,6 +118,8 @@ static irqreturn_t egalax_ts_interrupt(int irq, void *dev_id) input_mt_report_pointer_emulation(input_dev, true); input_sync(input_dev); + ts->ids_in_use[id] = down; + return IRQ_HANDLED; } @@ -247,9 +250,22 @@ static int egalax_ts_suspend(struct device *dev) 0x3, 0x6, 0xa, 0x3, 0x36, 0x3f, 0x2, 0, 0, 0 }; struct i2c_client *client = to_i2c_client(dev); - int ret; + struct egalax_ts *ts = i2c_get_clientdata(client); + int ret, id; ret = i2c_master_send(client, suspend_cmd, MAX_I2C_DATA_LEN); + + /* We send a touch end event (for the ids in use) if the egalax module is + about to be turned off. */ + for (id = 0; id < MAX_SUPPORT_POINTS; ++id) { + if (ts->ids_in_use[id]) { + input_mt_slot(ts->input_dev, id); + input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, false); + input_mt_report_pointer_emulation(ts->input_dev, true); + input_sync(ts->input_dev); + } + } + return ret > 0 ? 0 : ret; } -- 1.8.3.1