From patchwork Mon Jul 11 09:45:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kepplinger X-Patchwork-Id: 12913284 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9C3FCCA47B for ; Mon, 11 Jul 2022 10:36:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229929AbiGKKgQ (ORCPT ); Mon, 11 Jul 2022 06:36:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48842 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229985AbiGKKfz (ORCPT ); Mon, 11 Jul 2022 06:35:55 -0400 Received: from comms.puri.sm (comms.puri.sm [159.203.221.185]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AABADB2C8; Mon, 11 Jul 2022 02:46:25 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by comms.puri.sm (Postfix) with ESMTP id 986B6E0090; Mon, 11 Jul 2022 02:46:24 -0700 (PDT) Received: from comms.puri.sm ([127.0.0.1]) by localhost (comms.puri.sm [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uv09orjE0Q0L; Mon, 11 Jul 2022 02:46:23 -0700 (PDT) From: Martin Kepplinger DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=puri.sm; s=comms; t=1657532783; bh=xRZj8xi+fQlByAMa9+liyCTkl4j540l3J57WaZpwvHQ=; h=From:To:Cc:Subject:Date:From; b=GUw3eCZFeBYWQNkZyl5Jp57hvHC5GlKaA5jVjgVTKMY+0uvJkKJFXHceyGTZ8eOy+ CZIUVjJdszsYsp+9BOZkSZXdzzVIlmJWUXc7TOa+/fDzwxqbBMkiXKbVBQjB86ShK1 C0BDP/DGbrSqVzcz3olhT8HONGot8CBLi851YQA64GC0J+/G1kSUS/BEUiQtXryoEU j5yfvsymSjfWE5PRiRJxrm6la9cWMVGQ1/aNWCqqMGZT15YewF5YpGQwtDTokTFZzq 0wxlqpqdDezyVnS48iJt2cmCdqjBDLw9hbGhgtAkfYX+FJvI8hWaok3lQJkrXNu98p WJR5Yw1sMy9Hg== To: rafael@kernel.org, khilman@kernel.org, ulf.hansson@linaro.org, robh@kernel.org, krzysztof.kozlowski@linaro.org, shawnguo@kernel.org, s.hauer@pengutronix.de, festevam@gmail.com, pavel@ucw.cz Cc: kernel@puri.sm, linux-imx@nxp.com, broonie@kernel.org, l.stach@pengutronix.de, aford173@gmail.com, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Martin Kepplinger Subject: [PATCH v1 1/3] power: domain: handle power supplies that need irq Date: Mon, 11 Jul 2022 11:45:47 +0200 Message-Id: <20220711094549.3445566-1-martin.kepplinger@puri.sm> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Handle a new DT property power-supply-needs-irq that boards can use if the power-domains' power-supply node (regulator) needs interrupts to function. An example is a pmic regulator on i2c. Since suspend/resume doesn't work in these cases currently, switch to the normal, outer suspend/resume callbacks. Usually such a regulator already times out during suspend_noirq: [ 41.024193] buck4: failed to disable: -ETIMEDOUT Initially systemd suspend problems had been discussed at https://lore.kernel.org/linux-arm-kernel/20211002005954.1367653-8-l.stach@pengutronix.de/ which led to discussing the pmic that contains the regulators which serve as power-domain power-supplies: https://lore.kernel.org/linux-pm/573166b75e524517782471c2b7f96e03fd93d175.camel@puri.sm/T/ So this enables boards to use power-supply-needs-irq and fix systemd suspend and resume. Possibly one can find more changes this property should configure. They can be added later when testing them. Signed-off-by: Martin Kepplinger --- drivers/base/power/domain.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 3e86772d5fac..c8fecba2c191 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2298,6 +2298,16 @@ static bool genpd_present(const struct generic_pm_domain *genpd) return ret; } +static void of_genpd_get_power_supply_irq(struct generic_pm_domain *pd) +{ + if (of_property_read_bool(pd->dev.of_node, "power-supply-needs-irq")) { + pd->domain.ops.suspend = genpd_suspend_noirq; + pd->domain.ops.resume = genpd_resume_noirq; + pd->domain.ops.suspend_noirq = NULL; + pd->domain.ops.resume_noirq = NULL; + } +} + /** * of_genpd_add_provider_simple() - Register a simple PM domain provider * @np: Device node pointer associated with the PM domain provider. @@ -2343,6 +2353,8 @@ int of_genpd_add_provider_simple(struct device_node *np, genpd->provider = &np->fwnode; genpd->has_provider = true; + of_genpd_get_power_supply_irq(genpd); + return 0; } EXPORT_SYMBOL_GPL(of_genpd_add_provider_simple); @@ -2394,6 +2406,8 @@ int of_genpd_add_provider_onecell(struct device_node *np, genpd->provider = &np->fwnode; genpd->has_provider = true; + + of_genpd_get_power_supply_irq(genpd); } ret = genpd_add_provider(np, data->xlate, data);