From patchwork Fri Dec 12 02:27:33 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dudley Du X-Patchwork-Id: 5478671 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 B621BBEEA8 for ; Fri, 12 Dec 2014 02:32:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D357D201D3 for ; Fri, 12 Dec 2014 02:32:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E5A01201C8 for ; Fri, 12 Dec 2014 02:32:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759387AbaLLC3K (ORCPT ); Thu, 11 Dec 2014 21:29:10 -0500 Received: from mail-pa0-f41.google.com ([209.85.220.41]:41820 "EHLO mail-pa0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759386AbaLLC3I (ORCPT ); Thu, 11 Dec 2014 21:29:08 -0500 Received: by mail-pa0-f41.google.com with SMTP id rd3so6271575pab.14 for ; Thu, 11 Dec 2014 18:29:08 -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=29NVNjSoLYC2FrYyFG9X6NSzN8+ZUL62xi6e091RZ4g=; b=HRVE2aUDxZhvSE4SaGBd1sUK18Yw9UoPT3nYu87v/y18hZ+jVUU7VdUqUFjBi2fAjp q/suTt2u8uSHRuD47tqRDE1cJVC2KWTfYF0CH6BJgZ0r9PSX1700OJagEHraqLpCgqzX 8IpMa/gkpSuUxxPAKGJDl/raynf7uolo2ShmRGIO8qWfR8gTXyRxrG4zAFgsMHDfa+Zn UYiHke5r/t++oxKk0tXJc7vEQ3HLOm1F4S4JeUSblgCxjCyIO2EJFvLJI+X5IOe8ci7f IgwmhNadKtxP06WSGY2Fj+TSIg91lGfJGLkRKTfIQgGaWDmR+r2oOw+zmyYHObc3jzkq T/+A== X-Received: by 10.68.136.6 with SMTP id pw6mr22252116pbb.157.1418351347336; Thu, 11 Dec 2014 18:29:07 -0800 (PST) Received: from localhost ([140.207.206.26]) by mx.google.com with ESMTPSA id nt6sm2650pdb.26.2014.12.11.18.29.04 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Thu, 11 Dec 2014 18:29:06 -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 v14 03/12] input: cyapa: add power management interfaces supported for the device Date: Fri, 12 Dec 2014 10:27:33 +0800 Message-Id: <1418351262-8163-4-git-send-email-dudley.dulixin@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1418351262-8163-1-git-send-email-dudley.dulixin@gmail.com> References: <1418351262-8163-1-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 72eb44a..055f1df 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, cyapa_irq, IRQF_TRIGGER_FALLING | IRQF_ONESHOT,