From patchwork Wed Sep 10 04:34:20 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dudley Du X-Patchwork-Id: 4874361 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id C51909F32F for ; Wed, 10 Sep 2014 04:45:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E102F20149 for ; Wed, 10 Sep 2014 04:45:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 17B8E2016C for ; Wed, 10 Sep 2014 04:45:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751292AbaIJEjb (ORCPT ); Wed, 10 Sep 2014 00:39:31 -0400 Received: from bay004-omc1s3.hotmail.com ([65.54.190.14]:56927 "EHLO BAY004-OMC1S3.hotmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751186AbaIJEj2 convert rfc822-to-8bit (ORCPT ); Wed, 10 Sep 2014 00:39:28 -0400 Received: from BAY176-DS11 ([65.54.190.61]) by BAY004-OMC1S3.hotmail.com over TLS secured channel with Microsoft SMTPSVC(7.5.7601.22724); Tue, 9 Sep 2014 21:34:21 -0700 X-TMN: [Ksf9d5EX8mP97xxBby1/1+5XPuwSxWDO] X-Originating-Email: [dudlx@outlook.com] Message-ID: From: Dudley Du To: , CC: , , , Subject: [PATCH v6 02/13] input: cyapa: add cyapa driver power management interfaces support Date: Wed, 10 Sep 2014 12:34:20 +0800 MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ac/MsH13OeEDrHxqSS+hFQaM/kpFog== Content-Language: zh-cn X-OriginalArrivalTime: 10 Sep 2014 04:34:21.0810 (UTC) FILETIME=[7E0C9D20:01CFCCB0] Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-9.4 required=5.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_HI, 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 | 85 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c index 3edd23e..d61ccbc 100644 --- a/drivers/input/mouse/cyapa.c +++ b/drivers/input/mouse/cyapa.c @@ -427,6 +427,82 @@ u16 cyapa_pwr_cmd_to_sleep_time(u8 pwr_mode) : (encoded_time - 5) * 20; } +#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; + + mutex_lock(&cyapa->state_sync_lock); + 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 u16 cyapa_clamp_sleep_time(u16 sleep_time) +{ + if (sleep_time > 1000) + sleep_time = 1000; + return sleep_time; +} + +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; + + mutex_lock(&cyapa->state_sync_lock); + + 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 = cyapa_clamp_sleep_time(sleep_time); + 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, +}; +#endif /* CONFIG_PM_SLEEP */ + void cyapa_detect_async(void *data, async_cookie_t cookie) { struct cyapa *cyapa = (struct cyapa *)data; @@ -521,6 +597,12 @@ static int cyapa_probe(struct i2c_client *client, goto err_uninit_tp_modules; } +#ifdef CONFIG_PM_SLEEP + if (device_can_wakeup(dev) && + sysfs_merge_group(&client->dev.kobj, &cyapa_power_wakeup_group)) + dev_warn(dev, "error creating wakeup power entries.\n"); +#endif /* CONFIG_PM_SLEEP */ + async_schedule(cyapa_detect_and_start, cyapa); return 0; @@ -543,6 +625,9 @@ static int cyapa_remove(struct i2c_client *client) cyapa->removed = true; mutex_unlock(&cyapa->state_sync_lock); +#ifdef CONFIG_PM_SLEEP + sysfs_unmerge_group(&client->dev.kobj, &cyapa_power_wakeup_group); +#endif free_irq(cyapa->irq, cyapa); input_unregister_device(cyapa->input);