From patchwork Mon Sep 12 22:13:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Raul Rangel X-Patchwork-Id: 605019 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 BE162C6FA82 for ; Mon, 12 Sep 2022 22:13:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230211AbiILWNy (ORCPT ); Mon, 12 Sep 2022 18:13:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34098 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230185AbiILWNw (ORCPT ); Mon, 12 Sep 2022 18:13:52 -0400 Received: from mail-io1-xd31.google.com (mail-io1-xd31.google.com [IPv6:2607:f8b0:4864:20::d31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1732F4DF1F for ; Mon, 12 Sep 2022 15:13:46 -0700 (PDT) Received: by mail-io1-xd31.google.com with SMTP id 62so8153319iov.5 for ; Mon, 12 Sep 2022 15:13:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=mFrbzNQLKG8CXPO79w4AjsVZ8usX9qVrnGw8EpWynk8=; b=AOmtMoMUs2aYSo+sMzMa9oWTCCfyDC/ZsgWoMyX+TlQsyBmE02zMN1svsLv36u+Ycb KEnHe3z4WozzzUEo4wHPoZPJMn/81Mq6Ho/aRgM/8RK7Muhhhhp8c5OnhGuIkoab/LbZ zZaAC0BFDEFGvm1425bppIiy4tnDq8qAOwOxc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=mFrbzNQLKG8CXPO79w4AjsVZ8usX9qVrnGw8EpWynk8=; b=z+WBz+nm61LuUhSdV65ohlJ7oCftQ2k5ChW4V083XA3MVPe+8a8Cyt++o9kVrUFxhZ sjB1+krJmIoofEHzYz5PvZuPaNwcpVXEyPqkE9SxebOJz2a+Rty3FEP2sFM1n9bdnM7R LI7gycr/eGN/63h5tdRvglWmV56sgFpd9df7E5LBg1ecunSeA5tEJOSQ0VzPLkXDSUv7 OaKbow1601EtrOlFzxezQtNlUaQTScrmmT5CNBgeAjEqJvVK2Vu7FmBP2Fatn6vL7tqU 8u7oQwu6mXEuWQtR51TRUb5H6ltYKR+QDZC3ty6GBgDyY6LnZMIaEH4T5fXQLs7Y1D8R Niww== X-Gm-Message-State: ACgBeo3GwP+9lVnurU7RquIs5D7gDnWkOYF5O/OlI7EQvxQQDUzGbsfs OzW8riFvVQR34l4oeFdDl4KNq1wBklmpc80u X-Google-Smtp-Source: AA6agR7+xi+3eILnnUT6w5qcA3dGXcT9+pSxvcvfZhe3NJWIwgstMUo9fQiq4by9kDHLsr8FGAQfAw== X-Received: by 2002:a05:6638:d48:b0:351:497c:89a9 with SMTP id d8-20020a0566380d4800b00351497c89a9mr15514132jak.278.1663020825828; Mon, 12 Sep 2022 15:13:45 -0700 (PDT) Received: from rrangel920.bld.corp.google.com (h24-56-189-219.arvdco.broadband.dynamic.tds.net. [24.56.189.219]) by smtp.gmail.com with ESMTPSA id 18-20020a056e020cb200b002f16e7021f6sm4077334ilg.22.2022.09.12.15.13.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Sep 2022 15:13:45 -0700 (PDT) From: Raul E Rangel To: linux-acpi@vger.kernel.org, linux-input@vger.kernel.org Cc: andriy.shevchenko@linux.intel.com, jingle.wu@emc.com.tw, mario.limonciello@amd.com, timvp@google.com, linus.walleij@linaro.org, hdegoede@redhat.com, rafael@kernel.org, Raul E Rangel , Alistair Francis , Angela Czubak , Bartosz Szczepanek , Benjamin Tissoires , Dmitry Torokhov , Jiri Kosina , Matthias Kaehlcke , linux-kernel@vger.kernel.org Subject: [PATCH v2 01/13] HID: i2c-hid: Use PM subsystem to manage wake irq Date: Mon, 12 Sep 2022 16:13:05 -0600 Message-Id: <20220912160931.v2.1.Id4b4bdfe06e2caf2d5a3c9dd4a9b1080c38b539c@changeid> X-Mailer: git-send-email 2.37.2.789.g6183377224-goog In-Reply-To: <20220912221317.2775651-1-rrangel@chromium.org> References: <20220912221317.2775651-1-rrangel@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org The I2C hid driver is currently manually managing the wake IRQ. This change removes the explicit enable_irq_wake/disable_irq_wake and instead relies on the PM subsystem. This is done by calling dev_pm_set_wake_irq. i2c_device_probe already calls dev_pm_set_wake_irq when using device tree, and i2c_device_remove also already calls dev_pm_clear_wake_irq. There could be some device tree systems that have incorrectly declared `wake` capabilities, so this change will set the wake irq if one is missing. This matches the previous behavior. I tested this on an ACPI system that has a HID touchscreen and verified the IRQ was armed for wake on suspend. Signed-off-by: Raul E Rangel --- Changes in v2: - Set the wake_irq when not configured by the i2c-core. This is different than v1, where the wake_irq was only set for non DT systems. drivers/hid/i2c-hid/i2c-hid-core.c | 33 +++++++++++------------------- 1 file changed, 12 insertions(+), 21 deletions(-) diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c index baa169fadd6632..57214549460043 100644 --- a/drivers/hid/i2c-hid/i2c-hid-core.c +++ b/drivers/hid/i2c-hid/i2c-hid-core.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include @@ -116,7 +117,6 @@ struct i2c_hid { wait_queue_head_t wait; /* For waiting the interrupt */ - bool irq_wake_enabled; struct mutex reset_lock; struct i2chid_ops *ops; @@ -1036,6 +1036,15 @@ int i2c_hid_core_probe(struct i2c_client *client, struct i2chid_ops *ops, if (ret < 0) goto err_powered; + /* + * The wake IRQ should be declared via device tree instead of assuming + * the IRQ can wake the system. This is here for legacy reasons and + * will be removed once the i2c-core supports querying ACPI for wake + * capabilities. + */ + if (!dev->power.wakeirq) + dev_pm_set_wake_irq(&client->dev, client->irq); + hid = hid_allocate_device(); if (IS_ERR(hid)) { ret = PTR_ERR(hid); @@ -1119,7 +1128,6 @@ static int i2c_hid_core_suspend(struct device *dev) struct i2c_hid *ihid = i2c_get_clientdata(client); struct hid_device *hid = ihid->hid; int ret; - int wake_status; ret = hid_driver_suspend(hid, PMSG_SUSPEND); if (ret < 0) @@ -1130,16 +1138,8 @@ static int i2c_hid_core_suspend(struct device *dev) disable_irq(client->irq); - if (device_may_wakeup(&client->dev)) { - wake_status = enable_irq_wake(client->irq); - if (!wake_status) - ihid->irq_wake_enabled = true; - else - hid_warn(hid, "Failed to enable irq wake: %d\n", - wake_status); - } else { + if (!device_may_wakeup(&client->dev)) i2c_hid_core_power_down(ihid); - } return 0; } @@ -1150,18 +1150,9 @@ static int i2c_hid_core_resume(struct device *dev) struct i2c_client *client = to_i2c_client(dev); struct i2c_hid *ihid = i2c_get_clientdata(client); struct hid_device *hid = ihid->hid; - int wake_status; - if (!device_may_wakeup(&client->dev)) { + if (!device_may_wakeup(&client->dev)) i2c_hid_core_power_up(ihid); - } else if (ihid->irq_wake_enabled) { - wake_status = disable_irq_wake(client->irq); - if (!wake_status) - ihid->irq_wake_enabled = false; - else - hid_warn(hid, "Failed to disable irq wake: %d\n", - wake_status); - } enable_irq(client->irq);