From patchwork Fri Jun 6 07:28:42 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dudley Du X-Patchwork-Id: 4310511 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 6CE3D9F357 for ; Fri, 6 Jun 2014 07:33:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C0EDF201D5 for ; Fri, 6 Jun 2014 07:33:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F3F35201BC for ; Fri, 6 Jun 2014 07:32:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752290AbaFFH2v (ORCPT ); Fri, 6 Jun 2014 03:28:51 -0400 Received: from relay-s04-hub005.domainlocalhost.com ([74.115.207.216]:36795 "EHLO relay-S04-HUB005.domainlocalhost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752263AbaFFH2u (ORCPT ); Fri, 6 Jun 2014 03:28:50 -0400 Received: from S04-MBX01-01.s04.local ([169.254.1.126]) by S04-HUB005.s04.local ([10.30.13.43]) with mapi id 14.03.0174.001; Fri, 6 Jun 2014 03:28:43 -0400 From: Dudley Du To: Dmitry Torokhov , "Rafael J. Wysocki" , Alan Stern CC: Benson Leung , Lily Rui , "Daniel Kurtz" , "linux-kernel@vger.kernel.org" , "linux-input@vger.kernel.org" Subject: [PATCH v2 2/14] input: cyapa: add cyapa driver power management interfaces supported Thread-Topic: [PATCH v2 2/14] input: cyapa: add cyapa driver power management interfaces supported Thread-Index: Ac+BWOUcjnFa/TvaR62XjLxdeaqk1A== Date: Fri, 6 Jun 2014 07:28:42 +0000 Message-ID: <77BC725C9062764F874D79F51E1F1A8F4406B8A3@S04-MBX01-01.s04.local> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: <77BC725C9062764F874D79F51E1F1A8F4406B8A3@S04-MBX01-01.s04.local> x-originating-ip: [10.30.12.146] MIME-Version: 1.0 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_TVD_MIME_EPI, 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 Chomebooks. Signed-off-by: Du, Dudley --- This message and any attachments may contain Cypress (or its subsidiaries) confidential information. If it has been received in error, please advise the sender and immediately delete this message. diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c index d5adee8..1dfc16d 100644 --- a/drivers/input/mouse/cyapa.c +++ b/drivers/input/mouse/cyapa.c @@ -462,6 +462,10 @@ static void cyapa_detect(struct cyapa *cyapa) } /* + * Sysfs Interface. + */ + +/* * cyapa_sleep_time_to_pwr_cmd and cyapa_pwr_cmd_to_sleep_time * * These are helper functions that convert to and from integer idle @@ -495,6 +499,81 @@ 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; + + 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); + else + sleep_time = cyapa->suspend_sleep_time; + len = scnprintf(buf, PAGE_SIZE, "%u\n", sleep_time); + } + + return len; +} + +static int cyapa_sleep_time_check(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; + + if (buf == NULL || count == 0) + goto invalidparam; + + 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_sleep_time_check(sleep_time); + cyapa->suspend_power_mode = + cyapa_sleep_time_to_pwr_cmd(cyapa->suspend_sleep_time); + } else + goto invalidparam; + + return count; + +invalidparam: + dev_err(dev, "invalid suspend scanrate ms parameters\n"); + return -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; @@ -575,6 +654,12 @@ static int cyapa_probe(struct i2c_client *client, } cyapa_disable_irq(cyapa); +#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; @@ -590,6 +675,9 @@ static int cyapa_remove(struct i2c_client *client) { struct cyapa *cyapa = i2c_get_clientdata(client); +#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);