From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754592AbaJUIZg (ORCPT ); Tue, 21 Oct 2014 04:25:36 -0400 Received: from mailout1.w1.samsung.com ([210.118.77.11]:36687 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753269AbaJUIZ3 (ORCPT ); Tue, 21 Oct 2014 04:25:29 -0400 X-AuditID: cbfec7f4-b7f6c6d00000120b-e5-54461875374d From: Krzysztof Kozlowski To: Ben Dooks , Kukjin Kim , Russell King , Liam Girdwood , Mark Brown , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Javier Martinez Canillas , Kyungmin Park , Marek Szyprowski , Bartlomiej Zolnierkiewicz , Tomasz Figa , Chanwoo Choi , Krzysztof Kozlowski Subject: [PATCH 1/2] regulator: max77686: Implement suspend disable for some LDOs Date: Tue, 21 Oct 2014 10:25:11 +0200 Message-id: <1413879912-26606-2-git-send-email-k.kozlowski@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1413879912-26606-1-git-send-email-k.kozlowski@samsung.com> References: <1413879912-26606-1-git-send-email-k.kozlowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrJLMWRmVeSWpSXmKPExsVy+t/xy7qlEm4hBi//2FhsnLGe1WLSugNM FlMfPmGzuP7lOavF0d8FFq9fGFr0LrjKZnG26Q27xbcrHUwWmx5fY7W4vGsOm8WM8/uYLG5f 5rVYe+Quu8WqXX8YHfg9Wpp72Dz+Pr/O4vF31Qtmj52z7rJ7bFrVyeaxeUm9R9+WVYwenzfJ BXBEcdmkpOZklqUW6dslcGUsOfmQveA3X8Wem8uYGhgP8XQxcnJICJhIbD//gg3CFpO4cG89 mC0ksJRR4vji/C5GLiC7j0mi79JTFpAEm4CxxOblS9hAEiICC5kkju/8zQTiMAtcYJLY9OwP WJWwQLDE4z9zwUaxCKhK3D/yg7mLkYODV8Bd4swaaYhtchInj01mBbE5BTwkrr4/wgyx2V1i 2ZOV7BMYeRcwMqxiFE0tTS4oTkrPNdQrTswtLs1L10vOz93ECAneLzsYFx+zOsQowMGoxMO7 YZlriBBrYllxZe4hRgkOZiUR3lxhtxAh3pTEyqrUovz4otKc1OJDjEwcnFINjC0KzmKBtxVS 7ZQS9pdw1s6fEKSU/9xnB8OhzWfFDXcfz05qPnHcU9qFo2zjmfDpjWEyRxuf6zN42815dNBO hqnVc+XbOYXrDk963VmRLr6wT2ZjzvH4FXKdZzr8Zkdcuzi1dNW94I5T3+bq+IgdkG97dkHl yI0Yxv3vbDNn53TGLDBIWFB+TYmlOCPRUIu5qDgRAAhXlUc8AgAA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some LDOs of Maxim 77686 PMIC support disabling during system suspend (LDO{2,6,7,8,10,11,12,14,15,16}). This was already implemented as part of set_suspend_mode function. In that case the mode was one of: - disable, - normal mode, - low power mode. However there are no bindings for setting the mode during suspend. Implement a set_suspend_disable function for regulators supporting this. This helps reducing energy consumption during system sleep. Signed-off-by: Krzysztof Kozlowski --- drivers/regulator/max77686.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/regulator/max77686.c b/drivers/regulator/max77686.c index ef1af2debbd2..84603051f24d 100644 --- a/drivers/regulator/max77686.c +++ b/drivers/regulator/max77686.c @@ -123,6 +123,24 @@ static int max77686_set_suspend_mode(struct regulator_dev *rdev, return 0; } +static int max77686_ldo_set_suspend_disable(struct regulator_dev *rdev, + unsigned int mode) +{ + unsigned int val; + struct max77686_data *max77686 = rdev_get_drvdata(rdev); + int ret; + + val = 0x1 << MAX77686_OPMODE_SHIFT; + + ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, + rdev->desc->enable_mask, val); + if (ret) + return ret; + + max77686->opmode[rdev_get_id(rdev)] = val; + return 0; +} + /* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */ static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev, unsigned int mode) @@ -212,6 +230,7 @@ static struct regulator_ops max77686_ldo_ops = { .set_voltage_sel = regulator_set_voltage_sel_regmap, .set_voltage_time_sel = regulator_set_voltage_time_sel, .set_suspend_mode = max77686_ldo_set_suspend_mode, + .set_suspend_disable = max77686_ldo_set_suspend_disable, }; static struct regulator_ops max77686_buck1_ops = { -- 1.9.1