Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932157Ab3HGH2f (ORCPT ); Wed, 7 Aug 2013 03:28:35 -0400 Received: from fallback7.mail.ru ([94.100.176.135]:39488 "EHLO fallback7.mail.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757109Ab3HGH2d (ORCPT ); Wed, 7 Aug 2013 03:28:33 -0400 From: =?UTF-8?B?QWxleGFuZGVyIFNoaXlhbg==?= To: =?UTF-8?B?V2VpIE5p?= Cc: khali@linux-fr.org, swarren@wwwdotorg.org, linux-kernel@vger.kernel.org, lm-sensors@lm-sensors.org, MLongnecker@nvidia.com, linux@roeck-us.net, linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: =?UTF-8?B?UmU6IFtQQVRDSCAxLzJdIGh3bW9uOiAobG05MCkgQWRkIHBvd2VyIGNvbnRy?= =?UTF-8?B?b2w=?= Mime-Version: 1.0 X-Mailer: Mail.Ru Mailer 1.0 X-Originating-IP: [217.119.30.118] Date: Wed, 07 Aug 2013 11:27:22 +0400 Reply-To: =?UTF-8?B?QWxleGFuZGVyIFNoaXlhbg==?= X-Priority: 3 (Normal) Message-ID: <1375860442.896960598@f427.i.mail.ru> Content-Type: text/plain; charset=utf-8 X-Mras: Ok In-Reply-To: <1375858358-15070-2-git-send-email-wni@nvidia.com> References: <1375858358-15070-1-git-send-email-wni@nvidia.com> <1375858358-15070-2-git-send-email-wni@nvidia.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id r777SijW024482 Content-Length: 1165 Lines: 32 > The device lm90 can be controlled by the vdd rail. > Adding the power control support to power on/off the vdd rail. > And make sure that power is enabled before accessing the device. > > Signed-off-by: Wei Ni > --- > drivers/hwmon/lm90.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++ [...] > + if (!data->lm90_reg) { > + data->lm90_reg = regulator_get(&client->dev, "vdd"); > + if (IS_ERR_OR_NULL(data->lm90_reg)) { > + if (PTR_ERR(data->lm90_reg) == -ENODEV) > + dev_info(&client->dev, > + "No regulator found for vdd. Assuming vdd is always powered."); > + else > + dev_warn(&client->dev, > + "Error [%ld] in getting the regulator handle for vdd.\n", > + PTR_ERR(data->lm90_reg)); > + data->lm90_reg = NULL; > + mutex_unlock(&data->update_lock); > + return -ENODEV; > + } > + } > + if (is_enable) { > + ret = regulator_enable(data->lm90_reg); > + msleep(POWER_ON_DELAY); Can this delay be handled directly from regulator? [...] --- ????{.n?+???????+%?????ݶ??w??{.n?+????{??G?????{ay?ʇڙ?,j??f???h?????????z_??(?階?ݢj"???m??????G????????????&???~???iO???z??v?^?m???? ????????I?