From patchwork Tue Jan 14 07:16:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Boichat X-Patchwork-Id: 11331359 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 59ED013BD for ; Tue, 14 Jan 2020 07:16:32 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 37A002467D for ; Tue, 14 Jan 2020 07:16:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="WcPRp+7M" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 37A002467D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6A76F6E2D8; Tue, 14 Jan 2020 07:16:31 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pj1-x1044.google.com (mail-pj1-x1044.google.com [IPv6:2607:f8b0:4864:20::1044]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3F48B6E2D5 for ; Tue, 14 Jan 2020 07:16:30 +0000 (UTC) Received: by mail-pj1-x1044.google.com with SMTP id r67so5299935pjb.0 for ; Mon, 13 Jan 2020 23:16:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=OSlwbkk1pzyLFKga0+D5pkXbBE5RP0e6plgOO4eYBJQ=; b=WcPRp+7Mdnpj9rMQS/ieZ3gIzSidtcpvoi1VWauuCFrsi4euYkjOGWlPabSCB8OsXn fY+YYvvLPmrGfP7dqyY3bXJOdPSwTJ5H54BELtP27PkE73ZBk5FuadDchNDNSvGGv0S4 eY1/zvVBMuRO/wV9+mzojLylgHcwdzX5frKms= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=OSlwbkk1pzyLFKga0+D5pkXbBE5RP0e6plgOO4eYBJQ=; b=ak3Iw211TFd/YjEXQ+Ba9417FSzCJt7iQLfJdGg8fsUuc4wb+4ZW1vAV6iphpYd24E LSsp9hto7pRbogbsqW2hknGMFX0rkJVXdbWxPJ7SEjtY3w0XM6BA4YHjA0tB6j0wv9dq J6tfnGTzn2pOvwr09+0LXDVAKUAAIeQ88tAtutEtCfH9Ot0i+3I18E/vDbsS/qpcuTlU vFxeY3IWJiYK5EtyJIhzDCwf9J0l9arQ8AV9gHgs/olm47Mdkoa7zgaQGfo4vbFpAFms aoNVk+a6Z4sLAq9MlBFDW3fxjUp8eY+C+XZcfZsS5f0uUbTG4K3G+mlwnBuUyU+VayO4 ZXHg== X-Gm-Message-State: APjAAAUeEznt8iIqUZO1+p48Epwi2aRO0Qp3nyJNNEdR8sykCRHkGMIo m7Q5r9z1pfrymajF80/INRvlXg== X-Google-Smtp-Source: APXvYqxAVfz0yEjQZNh09tBVmqQhNTSo4PFJ0addejqjhSdLfGflyqf0R2L9U0djUMmD4gnScDcTBQ== X-Received: by 2002:a17:90a:bf92:: with SMTP id d18mr20309660pjs.21.1578986189911; Mon, 13 Jan 2020 23:16:29 -0800 (PST) Received: from drinkcat2.tpe.corp.google.com ([2401:fa00:1:b:d8b7:33af:adcb:b648]) by smtp.gmail.com with ESMTPSA id b4sm17092976pfd.18.2020.01.13.23.16.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Jan 2020 23:16:29 -0800 (PST) From: Nicolas Boichat To: Rob Herring Subject: [PATCH v3 7/7, RFC] drm/panfrost: devfreq: Add support for 2 regulators Date: Tue, 14 Jan 2020 15:16:02 +0800 Message-Id: <20200114071602.47627-8-drinkcat@chromium.org> X-Mailer: git-send-email 2.25.0.rc1.283.g88dfdc4193-goog In-Reply-To: <20200114071602.47627-1-drinkcat@chromium.org> References: <20200114071602.47627-1-drinkcat@chromium.org> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Tomeu Vizoso , David Airlie , linux-kernel@vger.kernel.org, Liam Girdwood , dri-devel@lists.freedesktop.org, Steven Price , Mark Brown , linux-mediatek@lists.infradead.org, Alyssa Rosenzweig , hsinyi@chromium.org, Matthias Brugger , linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The Bifrost GPU on MT8183 uses 2 regulators (core and SRAM) for devfreq, and provides OPP table with 2 sets of voltages. TODO: This is incomplete as we'll need add support for setting a pair of voltages as well. Signed-off-by: Nicolas Boichat --- drivers/gpu/drm/panfrost/panfrost_devfreq.c | 17 +++++++++++++++++ drivers/gpu/drm/panfrost/panfrost_device.h | 1 + 2 files changed, 18 insertions(+) diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c index 413987038fbfccb..9c0987a3d71c597 100644 --- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c +++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c @@ -79,6 +79,21 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev) struct devfreq *devfreq; struct thermal_cooling_device *cooling; + /* If we have 2 regulator, we need an OPP table with 2 voltages. */ + if (pfdev->comp->num_supplies > 1) { + pfdev->devfreq.dev_opp_table = + dev_pm_opp_set_regulators(dev, + pfdev->comp->supply_names, + pfdev->comp->num_supplies); + if (IS_ERR(pfdev->devfreq.dev_opp_table)) { + ret = PTR_ERR(pfdev->devfreq.dev_opp_table); + pfdev->devfreq.dev_opp_table = NULL; + dev_err(dev, + "Failed to init devfreq opp table: %d\n", ret); + return ret; + } + } + ret = dev_pm_opp_of_add_table(dev); if (ret == -ENODEV) /* Optional, continue without devfreq */ return 0; @@ -119,6 +134,8 @@ void panfrost_devfreq_fini(struct panfrost_device *pfdev) if (pfdev->devfreq.cooling) devfreq_cooling_unregister(pfdev->devfreq.cooling); dev_pm_opp_of_remove_table(&pfdev->pdev->dev); + if (pfdev->devfreq.dev_opp_table) + dev_pm_opp_put_regulators(pfdev->devfreq.dev_opp_table); } void panfrost_devfreq_resume(struct panfrost_device *pfdev) diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h index 143eab57180a2e1..30ba11cbf600847 100644 --- a/drivers/gpu/drm/panfrost/panfrost_device.h +++ b/drivers/gpu/drm/panfrost/panfrost_device.h @@ -108,6 +108,7 @@ struct panfrost_device { struct { struct devfreq *devfreq; struct thermal_cooling_device *cooling; + struct opp_table *dev_opp_table; ktime_t busy_time; ktime_t idle_time; ktime_t time_last_update;