From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 59267CA9ED1 for ; Fri, 1 Nov 2019 11:45:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3702F2086D for ; Fri, 1 Nov 2019 11:45:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730361AbfKALpe (ORCPT ); Fri, 1 Nov 2019 07:45:34 -0400 Received: from mail-lj1-f194.google.com ([209.85.208.194]:35657 "EHLO mail-lj1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726710AbfKALpe (ORCPT ); Fri, 1 Nov 2019 07:45:34 -0400 Received: by mail-lj1-f194.google.com with SMTP id r7so1273410ljg.2; Fri, 01 Nov 2019 04:45:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=qxgJokQrFEU8GXkH/n/1Oa59RLXaum3MBpNuuyp1ECI=; b=J9Qwt1P7FQcGuQ1K8gaPxgd5hKUYKmBarN3fG3XYGUQzOIoqL/z9HzxJLhraAcHYnc pq7+VFrN3293dbyr57WfQ3JdpNB8Wq9EYAQpyyswY4hUJ1n2Jv6lcvaZ67cUeJu9DzLV BrGpEg6liPuSw9XY8ixYxdiQqtBhmSkpcuPKvL3hdg5xXZaeJcrFlTC+cyLpENOHpLRE qZY5G0E1SZQQ+msRRWy9mpyIyjYGT77DFPbbBu2VblG4eTjIYsHa0BooWbBikTrZpHkm rrnMXDy7papwZR6gvMTsP6cDiuAIQYNVyXa2MBnTINlm9F6euPnJ+GH2hEl00fStwX5e pDkw== X-Gm-Message-State: APjAAAU1bm3dSxLb9L64JXFH+4XS9GwKjseegen9Kn7uCxog3qMac3Qn KcD0zilLQ4pudlOemzk/DHE= X-Google-Smtp-Source: APXvYqwxKGowdxbHKEaDZuJoF47UQwiKFaBVmdMJ9dR73HdOmVPwawL2A5mG6blMEHlFDPynQrt0aw== X-Received: by 2002:a2e:3311:: with SMTP id d17mr4035482ljc.237.1572608730683; Fri, 01 Nov 2019 04:45:30 -0700 (PDT) Received: from localhost.localdomain ([213.255.186.46]) by smtp.gmail.com with ESMTPSA id g25sm3253148ljk.36.2019.11.01.04.45.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Nov 2019 04:45:30 -0700 (PDT) Date: Fri, 1 Nov 2019 13:45:20 +0200 From: Matti Vaittinen To: matti.vaittinen@fi.rohmeurope.com, mazziesaccount@gmail.com Cc: Jacek Anaszewski , Pavel Machek , Dan Murphy , Rob Herring , Mark Rutland , Lee Jones , Liam Girdwood , Mark Brown , Michael Turquette , Stephen Boyd , Linus Walleij , Bartosz Golaszewski , Alessandro Zummo , Alexandre Belloni , linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-gpio@vger.kernel.org, linux-rtc@vger.kernel.org Subject: [RFC PATCH v3 12/15] regulator: bd71828: Support in-kernel APIs to change run-level Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add exported functions bd71828_set_runlevel and bd71828_get_runlevel for setting and getting the system run level. Signed-off-by: Matti Vaittinen --- Changes from v2 - no changes drivers/regulator/bd71828-regulator.c | 67 +++++++++++++++++++++++++++ include/linux/mfd/rohm-bd71828.h | 2 + 2 files changed, 69 insertions(+) diff --git a/drivers/regulator/bd71828-regulator.c b/drivers/regulator/bd71828-regulator.c index d9e1381b5964..eaff9b1b20f9 100644 --- a/drivers/regulator/bd71828-regulator.c +++ b/drivers/regulator/bd71828-regulator.c @@ -505,6 +505,73 @@ int bd71828_set_runlevel_voltage(struct regulator *regulator, unsigned int uv, } EXPORT_SYMBOL(bd71828_set_runlevel_voltage); +/** + * bd71828_set_runlevel - change system run-level. + * + * @regulator: pointer to one of the BD71828 regulators obtained by + * call to regulator_get + * @level: New run-level the system should enter + * + * Changes the system to run-level which was given as argument. This + * operation will change state of all regulators which are set to be + * controlled by run-levels. Note that 'regulator' must point to a + * regulator which is controlled by run-levels. + */ +int bd71828_set_runlevel(struct regulator *regulator, unsigned int level) +{ + struct regulator_dev *rdev = regulator->rdev; + struct bd71828_regulator_data *rd = rdev_get_drvdata(rdev); + + if (!rd) + return -ENOENT; + + if (!rd || !rd->allow_runlvl) + return -EINVAL; + + if (rd->gps) + return bd71828_dvs_gpio_set_run_level(rd, level); + + return bd71828_dvs_i2c_set_run_level(rd->regmap, level); +} +EXPORT_SYMBOL(bd71828_set_runlevel); + +/** + * bd71828_get_runlevel - get the current system run-level. + * + * @regulator: pointer to one of the BD71828 regulators obtained by + * call to regulator_get + * @level: Pointer to value where current run-level is stored + * + * Returns the current system run-level. Note that 'regulator' must + * point to a regulator which is controlled by run-levels. + */ +int bd71828_get_runlevel(struct regulator *regulator, unsigned int *level) +{ + struct regulator_dev *rdev = regulator->rdev; + struct bd71828_regulator_data *rd = rdev_get_drvdata(rdev); + int ret; + + if (!rd) + return -ENOENT; + + if (!rd || !rd->allow_runlvl) + return -EINVAL; + + if (!rd->gps) + ret = bd71828_dvs_i2c_get_run_level(rd->regmap, rd); + else + ret = bd71828_dvs_gpio_get_run_level(rd); + + if (ret < 0) + return ret; + + *level = (unsigned int) ret; + + return 0; +} +EXPORT_SYMBOL(bd71828_get_runlevel); + + static const struct regulator_ops dvs_buck_gpio_ops = { .is_enabled = bd71828_dvs_gpio_is_enabled, .get_voltage = bd71828_dvs_gpio_get_voltage, diff --git a/include/linux/mfd/rohm-bd71828.h b/include/linux/mfd/rohm-bd71828.h index d2bb78427466..fc0955f0662c 100644 --- a/include/linux/mfd/rohm-bd71828.h +++ b/include/linux/mfd/rohm-bd71828.h @@ -420,5 +420,7 @@ enum { int bd71828_set_runlevel_voltage(struct regulator *regulator, unsigned int uv, unsigned int level); +int bd71828_set_runlevel(struct regulator *regulator, unsigned int level); +int bd71828_get_runlevel(struct regulator *regulator, unsigned int *level); #endif /* __LINUX_MFD_BD71828_H__ */ -- 2.21.0 -- Matti Vaittinen, Linux device drivers ROHM Semiconductors, Finland SWDC Kiviharjunlenkki 1E 90220 OULU FINLAND ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ Simon says - in Latin please. ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~ Thanks to Simon Glass for the translation =]