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Mon, 3 Apr 2023 12:57:55 +0000 From: Javier Carrasco To: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Dmitry Torokhov , Jonathan Cameron , Linus Walleij , Uwe Kleine-g , Michael Riesch , Javier Carrasco Subject: [PATCH 1/2] Input: st1232 - remove enable/disable irq in resume/suspend callbacks Date: Mon, 3 Apr 2023 14:47:06 +0200 Message-Id: <20230403124707.102986-2-javier.carrasco@wolfvision.net> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20230403124707.102986-1-javier.carrasco@wolfvision.net> References: <20230403124707.102986-1-javier.carrasco@wolfvision.net> X-ClientProxiedBy: VI1PR09CA0055.eurprd09.prod.outlook.com (2603:10a6:802:28::23) To VE1PR08MB4974.eurprd08.prod.outlook.com (2603:10a6:803:111::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VE1PR08MB4974:EE_|DU0PR08MB8787:EE_ X-MS-Office365-Filtering-Correlation-Id: adc6e349-9607-4bd7-5eac-08db34430a3a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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In commit 95dc58a9a02f ("Input: st1232 - rely on I2C core to configure wakeup interrupt") redundancy was removed by letting the I2C core manage the wake interrupt handling. On the other hand, the irq enabling/disabling was generalized to all devices, regardless of their wakeup capabilities. The interrupt enabling/disabling is carried out by the power subsystem in the resume/suspend states and therefore there is no need to manage it in the device driver. Remove the irq handling in the driver-specific resume/suspend callbacks and rely on the power subsystem. Fixes: 95dc58a9a02f ("Input: st1232 - rely on I2C core to configure wakeup interrupt") Signed-off-by: Javier Carrasco --- drivers/input/touchscreen/st1232.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c index f49566dc96f8..faa0be3993f4 100644 --- a/drivers/input/touchscreen/st1232.c +++ b/drivers/input/touchscreen/st1232.c @@ -345,8 +345,6 @@ static int st1232_ts_suspend(struct device *dev) struct i2c_client *client = to_i2c_client(dev); struct st1232_ts_data *ts = i2c_get_clientdata(client); - disable_irq(client->irq); - if (!device_may_wakeup(&client->dev)) st1232_ts_power(ts, false); @@ -361,8 +359,6 @@ static int st1232_ts_resume(struct device *dev) if (!device_may_wakeup(&client->dev)) st1232_ts_power(ts, true); - enable_irq(client->irq); - return 0; } From patchwork Mon Apr 3 12:47:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Carrasco X-Patchwork-Id: 669937 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B834C76196 for ; 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Add pm_wakeup_event to the interrupt handler in order to do so. Signed-off-by: Javier Carrasco --- drivers/input/touchscreen/st1232.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c index faa0be3993f4..f175bea464e1 100644 --- a/drivers/input/touchscreen/st1232.c +++ b/drivers/input/touchscreen/st1232.c @@ -59,6 +59,7 @@ struct st1232_ts_data { const struct st_chip_info *chip_info; int read_buf_len; u8 *read_buf; + bool suspended; }; static int st1232_ts_read_data(struct st1232_ts_data *ts, u8 reg, @@ -173,9 +174,13 @@ static int st1232_ts_parse_and_report(struct st1232_ts_data *ts) static irqreturn_t st1232_ts_irq_handler(int irq, void *dev_id) { struct st1232_ts_data *ts = dev_id; + struct i2c_client *client = ts->client; int count; int error; + if (ts->suspended && device_may_wakeup(&client->dev)) + pm_wakeup_event(&client->dev, 0); + error = st1232_ts_read_data(ts, REG_XY_COORDINATES, ts->read_buf_len); if (error) goto out; @@ -344,10 +349,16 @@ static int st1232_ts_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct st1232_ts_data *ts = i2c_get_clientdata(client); + struct input_dev *input = ts->input_dev; + + mutex_lock(&input->mutex); + ts->suspended = true; if (!device_may_wakeup(&client->dev)) st1232_ts_power(ts, false); + mutex_unlock(&input->mutex); + return 0; } @@ -355,10 +366,16 @@ static int st1232_ts_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct st1232_ts_data *ts = i2c_get_clientdata(client); + struct input_dev *input = ts->input_dev; + + mutex_lock(&input->mutex); + ts->suspended = false; if (!device_may_wakeup(&client->dev)) st1232_ts_power(ts, true); + mutex_unlock(&input->mutex); + return 0; }