From patchwork Mon Sep 19 15:59:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Raul Rangel X-Patchwork-Id: 607516 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 577F3C54EE9 for ; Mon, 19 Sep 2022 15:59:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230353AbiISP7c (ORCPT ); Mon, 19 Sep 2022 11:59:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46070 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230362AbiISP71 (ORCPT ); Mon, 19 Sep 2022 11:59:27 -0400 Received: from mail-il1-x131.google.com (mail-il1-x131.google.com [IPv6:2607:f8b0:4864:20::131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 716F72CE05 for ; Mon, 19 Sep 2022 08:59:23 -0700 (PDT) Received: by mail-il1-x131.google.com with SMTP id k9so15019249ils.12 for ; Mon, 19 Sep 2022 08:59:23 -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=uLFsVomnZ3NOv94HIF7hfztjoJa5WoPp5LmQm5BO1Bo=; b=adhgguZ3/jkoq54Ux4JQdP94x9fs+qUO+1yVoIOE8+jcSOfv7mJJAyhMb/fPqVbrj7 oy3X9S8/qa9d2IhQitudZq3ja1RgmMIFG6U7eWF6IK/0eJdsDwI1tYpjACd6fODEBnbn MYRjib6QiExCxohjxbSw647pAlE7Lq3QbYuoU= 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=uLFsVomnZ3NOv94HIF7hfztjoJa5WoPp5LmQm5BO1Bo=; b=Lc+Axuqujjee2r82/7UJ0ncps67W9L9G6WfFAxdJ55ojrV4vHLsG9ZQlfA2skyx+j/ LGC3AoxB374b66UaUAN8ZbHWel4eCtjtbC9sgC8cTwXXuE4oBVIFbj2Tdwh6FPvpEsr8 xLI+IU0RZskaI/9KIR70rUNvuj6Gandva90YTSH1z5RYqZmmsXQtNy8Wxwns75c5856F 0WNRFC1E8lQ5JBKC4yXpgmNv2X5ZBjhapRo6/sbXlbQP3SRNo4GkeoK35+NzVNu50ewm Vgfv4FIp95TT3pD3bKyhVdODPWQ6c8/KSqZOBWbBrbmCmV7K0IbutaTDy4Q3GtPkAOSp zA8Q== X-Gm-Message-State: ACrzQf2G6tDrrl8dSmjJSxLgIwzae3x/yvCJBDS4XNwiN66y/Fkrjjy5 Ycvl2EbK0PsYkhoziJzxgk09ng== X-Google-Smtp-Source: AMsMyM46Xy66tHQPUvK53ZwmhKXupAzGSOvhBQpX8Ceb0GWMcSl0Qg8peCV1ERPwHymAU1ifjBDuKQ== X-Received: by 2002:a05:6e02:b2a:b0:2f1:73e7:9e0c with SMTP id e10-20020a056e020b2a00b002f173e79e0cmr7880913ilu.298.1663603162669; Mon, 19 Sep 2022 08:59:22 -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 t70-20020a025449000000b00349fb9b1abesm5634154jaa.106.2022.09.19.08.59.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Sep 2022 08:59:21 -0700 (PDT) From: Raul E Rangel To: linux-acpi@vger.kernel.org, linux-input@vger.kernel.org Cc: timvp@google.com, hdegoede@redhat.com, andriy.shevchenko@linux.intel.com, rafael@kernel.org, mario.limonciello@amd.com, jingle.wu@emc.com.tw, mika.westerberg@linux.intel.com, dmitry.torokhov@gmail.com, linus.walleij@linaro.org, Raul E Rangel , Cai Huoqing , Douglas Anderson , Johnny Chuang , linux-kernel@vger.kernel.org Subject: [PATCH v4 03/13] Input: elants_i2c - Use PM subsystem to manage wake irq Date: Mon, 19 Sep 2022 09:59:05 -0600 Message-Id: <20220919095504.v4.3.I5862429ee3e4de0f9ad5ba01ce07ad99eec10cf0@changeid> X-Mailer: git-send-email 2.37.3.968.ga6b4b080e4-goog In-Reply-To: <20220919155916.1044219-1-rrangel@chromium.org> References: <20220919155916.1044219-1-rrangel@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org The Elan I2C touchscreen 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. Signed-off-by: Raul E Rangel --- (no changes since v2) Changes in v2: - Added elants_i2c to series drivers/input/touchscreen/elants_i2c.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c index a56f042adf9d82..80e16b533c452a 100644 --- a/drivers/input/touchscreen/elants_i2c.c +++ b/drivers/input/touchscreen/elants_i2c.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include #include @@ -180,7 +181,6 @@ struct elants_data { u8 cmd_resp[HEADER_SIZE]; struct completion cmd_done; - bool wake_irq_enabled; bool keep_power_in_suspend; /* Must be last to be used for DMA operations */ @@ -1582,6 +1582,15 @@ static int elants_i2c_probe(struct i2c_client *client) if (!client->dev.of_node) device_init_wakeup(&client->dev, true); + /* + * 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 (!client->dev.power.wakeirq) + dev_pm_set_wake_irq(&client->dev, client->irq); + error = devm_device_add_group(&client->dev, &elants_attribute_group); if (error) { dev_err(&client->dev, "failed to create sysfs attributes: %d\n", @@ -1626,7 +1635,7 @@ static int __maybe_unused elants_i2c_suspend(struct device *dev) * The device will automatically enter idle mode * that has reduced power consumption. */ - ts->wake_irq_enabled = (enable_irq_wake(client->irq) == 0); + return 0; } else if (ts->keep_power_in_suspend) { for (retry_cnt = 0; retry_cnt < MAX_RETRIES; retry_cnt++) { error = elants_i2c_send(client, set_sleep_cmd, @@ -1655,8 +1664,6 @@ static int __maybe_unused elants_i2c_resume(struct device *dev) int error; if (device_may_wakeup(dev)) { - if (ts->wake_irq_enabled) - disable_irq_wake(client->irq); elants_i2c_sw_reset(client); } else if (ts->keep_power_in_suspend) { for (retry_cnt = 0; retry_cnt < MAX_RETRIES; retry_cnt++) {