From patchwork Wed Dec 3 09:30:11 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dudley Du X-Patchwork-Id: 5428651 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 6EBFCBEEA8 for ; Wed, 3 Dec 2014 09:39:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 80F312028D for ; Wed, 3 Dec 2014 09:39:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9221A201CE for ; Wed, 3 Dec 2014 09:39:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752228AbaLCJcN (ORCPT ); Wed, 3 Dec 2014 04:32:13 -0500 Received: from mail-pd0-f170.google.com ([209.85.192.170]:33379 "EHLO mail-pd0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751454AbaLCJcJ (ORCPT ); Wed, 3 Dec 2014 04:32:09 -0500 Received: by mail-pd0-f170.google.com with SMTP id fp1so15140450pdb.1 for ; Wed, 03 Dec 2014 01:32:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=qMOZ0Jn6GieC46pJoyyd2Mb94b7TnurbPXIsqQZsDmA=; b=kDm++pk243bcNF32VQLL9nFgD+O1WaEju3oHrYoFmXKhCgo/KV/rI6IKV8icOCTqbT ZvPmSigd6P4J+rjSSphEPbFzx/1wkyfh1+FmOHi+LVvsFeH7dv2SSYEaB3njmpVcqyuF yJsmMN1mUUv41CuU1cVQYV3HbA8ucjCu7QbecZ+muZ056UKHc+axgNvkv9gCT1vOchc6 iTwOW6BO/1Hqm72yQIjCvj4J0f058BuRj8O4llhHlCVenMfmL0TrpX2h793BjJ2JlGcK ocgxf05fjaqrSYZFWFfB8So+BYv7eGDu+QRlNNLYgfwzYpIOnj1NDf1JXs90S+VH/Tmr Qfcw== X-Received: by 10.68.201.201 with SMTP id kc9mr13532243pbc.149.1417599128603; Wed, 03 Dec 2014 01:32:08 -0800 (PST) Received: from localhost ([140.207.206.26]) by mx.google.com with ESMTPSA id pl7sm22667084pac.11.2014.12.03.01.32.05 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Wed, 03 Dec 2014 01:32:07 -0800 (PST) From: Dudley Du To: dmitry.torokhov@gmail.com, rydberg@euromail.se Cc: Dudley Du , bleung@google.com, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v12 05/19] input: cyapa: add power management interfaces supported for the device Date: Wed, 3 Dec 2014 17:30:11 +0800 Message-Id: <1417599025-21681-6-git-send-email-dudley.dulixin@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1417599025-21681-1-git-send-email-dudley.dulixin@gmail.com> References: <1417599025-21681-1-git-send-email-dudley.dulixin@gmail.com> Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add suspend_scanrate_ms power management interfaces in device's power group, so users or applications can control the power management strategy of trackpad device as their requirements. TEST=test on Chromebooks. Signed-off-by: Dudley Du --- drivers/input/mouse/cyapa.c | 111 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c index 8259ac6..a31c555 100644 --- a/drivers/input/mouse/cyapa.c +++ b/drivers/input/mouse/cyapa.c @@ -582,6 +582,96 @@ out: return IRQ_HANDLED; } +/* + ************************************************************** + * sysfs interface + ************************************************************** +*/ +#ifdef CONFIG_PM_SLEEP +static ssize_t cyapa_show_suspend_scanrate(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + u8 pwr_cmd = cyapa->suspend_power_mode; + u16 sleep_time; + int len; + int error; + + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; + pwr_cmd = cyapa->suspend_power_mode; + sleep_time = cyapa->suspend_sleep_time; + mutex_unlock(&cyapa->state_sync_lock); + + if (pwr_cmd == PWR_MODE_BTN_ONLY) { + len = scnprintf(buf, PAGE_SIZE, "%s\n", BTN_ONLY_MODE_NAME); + } else if (pwr_cmd == PWR_MODE_OFF) { + len = scnprintf(buf, PAGE_SIZE, "%s\n", OFF_MODE_NAME); + } else { + if (cyapa->gen == CYAPA_GEN3) + sleep_time = cyapa_pwr_cmd_to_sleep_time(pwr_cmd); + len = scnprintf(buf, PAGE_SIZE, "%u\n", sleep_time); + } + + return len; +} + +static ssize_t cyapa_update_suspend_scanrate(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + u16 sleep_time; + int error; + + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; + + if (sysfs_streq(buf, BTN_ONLY_MODE_NAME)) { + cyapa->suspend_power_mode = PWR_MODE_BTN_ONLY; + } else if (sysfs_streq(buf, OFF_MODE_NAME)) { + cyapa->suspend_power_mode = PWR_MODE_OFF; + } else if (!kstrtou16(buf, 10, &sleep_time)) { + cyapa->suspend_sleep_time = max_t(u16, sleep_time, 1000); + cyapa->suspend_power_mode = + cyapa_sleep_time_to_pwr_cmd(cyapa->suspend_sleep_time); + } else { + count = 0; + } + + mutex_unlock(&cyapa->state_sync_lock); + + if (!count) + dev_err(dev, "invalid suspend scanrate ms parameters\n"); + return count ? count : -EINVAL; +} + +static DEVICE_ATTR(suspend_scanrate_ms, S_IRUGO|S_IWUSR, + cyapa_show_suspend_scanrate, + cyapa_update_suspend_scanrate); + +static struct attribute *cyapa_power_wakeup_entries[] = { + &dev_attr_suspend_scanrate_ms.attr, + NULL, +}; + +static const struct attribute_group cyapa_power_wakeup_group = { + .name = power_group_name, + .attrs = cyapa_power_wakeup_entries, +}; + +static void cyapa_remove_power_wakeup_group(void *data) +{ + struct cyapa *cyapa = data; + + sysfs_unmerge_group(&cyapa->client->dev.kobj, + &cyapa_power_wakeup_group); +} +#endif /* CONFIG_PM_SLEEP */ + static int cyapa_probe(struct i2c_client *client, const struct i2c_device_id *dev_id) { @@ -621,6 +711,27 @@ static int cyapa_probe(struct i2c_client *client, return error; } +#ifdef CONFIG_PM_SLEEP + if (device_can_wakeup(dev)) { + error = sysfs_merge_group(&client->dev.kobj, + &cyapa_power_wakeup_group); + if (error) { + dev_err(dev, "failed to add power wakeup group: %d\n", + error); + return error; + } + + error = devm_add_action(dev, + cyapa_remove_power_wakeup_group, cyapa); + if (error) { + cyapa_remove_power_wakeup_group(cyapa); + dev_err(dev, "failed to add power cleanup action: %d\n", + error); + return error; + } + } +#endif /* CONFIG_PM_SLEEP */ + error = devm_request_threaded_irq(dev, client->irq, NULL,