From patchwork Thu Dec 17 18:06:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 345206 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 BDEDEC2BB9A for ; Thu, 17 Dec 2020 18:12:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 92548238EF for ; Thu, 17 Dec 2020 18:12:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731580AbgLQSLM (ORCPT ); Thu, 17 Dec 2020 13:11:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41992 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730885AbgLQSJM (ORCPT ); Thu, 17 Dec 2020 13:09:12 -0500 Received: from mail-lf1-x132.google.com (mail-lf1-x132.google.com [IPv6:2a00:1450:4864:20::132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 395A0C0619FF; Thu, 17 Dec 2020 10:08:04 -0800 (PST) Received: by mail-lf1-x132.google.com with SMTP id 23so59806431lfg.10; Thu, 17 Dec 2020 10:08:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=/iJ0B7r+mpUQZW1i1h5+IfDMfw4DAGq9J8zYCndrZHI=; b=ExWKxj5QIut3nA25Da7CecMiBE6Co0EUXUaYa7EDsuufeFK9vSA+MhI677Lvw9pnY6 flwb85bLxAI+Xhf9X5Jjrv/OzhgzY6Qr6OJAo385beFQg2JtqdkNkJ7gFIP//KnsZ3VC G53ibKuOUf3j7BAO36IpfgdArAKtszZFpsCZGJxERdCPUIXqSplxqvTK/USoVQaTAjRy 195+umeDmwwxOBfUeNKqAwfUoE36+5BoA5loGfJpKHRDTmWJchvit5GJeclCvEwkWMY9 6dpFR4KTNetWh9Voiby3i5kyGUGo9HeX/IEwz7trvafihsWSUyWxDLOCwbk/ZpqX6MXV 2+TA== 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=/iJ0B7r+mpUQZW1i1h5+IfDMfw4DAGq9J8zYCndrZHI=; b=E1RizdYSMKtQq6Il2MZF9mcjb10mNykAXtRGNaED8WYcWeppmrKUP1lm/LKYUZbrdp wH+vwRENyzngW3VKNx7JOpZhcFU7CNhjTWAud3G/8FVEoFzr4+m5RBSvhDaus5TSiDyx CuHCWEC+333D9eEV6DCLtYH5CG3OqtKdO+japfG/vUqEE5hzjjL1YDxtiC6fk1EpuQS6 eyt6AQhQn8Ur8o9iqWZljudMx4zYqSwghhbeJSS8xdSnTCFZ/Qn/N88ZkCg8egQ3fMTc oRM7gsHUNuQD6a2WgiJwcA4YUdeID4COP1ebFfH3Mk8hu9vFqZ0xIv/sIDJDNjzV7/vr ee6A== X-Gm-Message-State: AOAM530T+2xVsB1ZsLTZPAe1geg9Hn6sZKqJMtZAS80FSNAPEgq3taFE jAS3WSCsQZBYTh6MrtJDzC8= X-Google-Smtp-Source: ABdhPJzdw43MgdozgmwwfnsGmn12MpmVira1PDFRjrinDosvUczBNvUTOPwdtYFG4TtdwHo7+9B/5w== X-Received: by 2002:a19:58e:: with SMTP id 136mr2356lff.98.1608228482755; Thu, 17 Dec 2020 10:08:02 -0800 (PST) Received: from localhost.localdomain (109-252-192-57.dynamic.spd-mgts.ru. [109.252.192.57]) by smtp.gmail.com with ESMTPSA id u5sm655596lff.78.2020.12.17.10.08.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Dec 2020 10:08:02 -0800 (PST) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Mark Brown , Liam Girdwood , Ulf Hansson , Mauro Carvalho Chehab , Rob Herring , Peter Geis , Nicolas Chauvet , Krzysztof Kozlowski , "Rafael J. Wysocki" , Kevin Hilman , Peter De Schrijver , Viresh Kumar , Stephen Boyd , Michael Turquette Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, linux-tegra@vger.kernel.org, linux-clk@vger.kernel.org Subject: [PATCH v2 37/48] drm/tegra: gr2d: Support OPP and power management Date: Thu, 17 Dec 2020 21:06:27 +0300 Message-Id: <20201217180638.22748-38-digetx@gmail.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201217180638.22748-1-digetx@gmail.com> References: <20201217180638.22748-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add OPP and PM support to the GR2D driver. This is required for enabling system-wide DVFS and supporting dynamic power management using a generic power domain. Tested-by: Peter Geis Tested-by: Nicolas Chauvet Signed-off-by: Dmitry Osipenko --- drivers/gpu/drm/tegra/gr2d.c | 73 +++++++++++++++++++++++++++++++++--- 1 file changed, 67 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/tegra/gr2d.c b/drivers/gpu/drm/tegra/gr2d.c index f30aa86e4c9f..689554ef81a8 100644 --- a/drivers/gpu/drm/tegra/gr2d.c +++ b/drivers/gpu/drm/tegra/gr2d.c @@ -7,6 +7,9 @@ #include #include #include +#include + +#include #include "drm.h" #include "gem.h" @@ -185,8 +188,15 @@ static const u32 gr2d_addr_regs[] = { GR2D_VA_BASE_ADDR_SB, }; +static void gr2d_pm_runtime_release(void *dev) +{ + pm_runtime_put(dev); + pm_runtime_disable(dev); +} + static int gr2d_probe(struct platform_device *pdev) { + struct tegra_core_opp_params opp_params = {}; struct device *dev = &pdev->dev; struct host1x_syncpt **syncpts; struct gr2d *gr2d; @@ -197,6 +207,8 @@ static int gr2d_probe(struct platform_device *pdev) if (!gr2d) return -ENOMEM; + platform_set_drvdata(pdev, gr2d); + gr2d->soc = of_device_get_match_data(dev); syncpts = devm_kzalloc(dev, sizeof(*syncpts), GFP_KERNEL); @@ -209,12 +221,23 @@ static int gr2d_probe(struct platform_device *pdev) return PTR_ERR(gr2d->clk); } - err = clk_prepare_enable(gr2d->clk); - if (err) { - dev_err(dev, "cannot turn on clock\n"); + opp_params.init_state = true; + + err = devm_tegra_core_dev_init_opp_table(dev, &opp_params); + if (err && err != -ENODEV) + return err; + + pm_runtime_enable(dev); + err = pm_runtime_get_sync(dev); + if (err < 0) { + gr2d_pm_runtime_release(dev); return err; } + err = devm_add_action_or_reset(dev, gr2d_pm_runtime_release, dev); + if (err) + return err; + INIT_LIST_HEAD(&gr2d->client.base.list); gr2d->client.base.ops = &gr2d_client_ops; gr2d->client.base.dev = dev; @@ -229,7 +252,6 @@ static int gr2d_probe(struct platform_device *pdev) err = host1x_client_register(&gr2d->client.base); if (err < 0) { dev_err(dev, "failed to register host1x client: %d\n", err); - clk_disable_unprepare(gr2d->clk); return err; } @@ -237,8 +259,6 @@ static int gr2d_probe(struct platform_device *pdev) for (i = 0; i < ARRAY_SIZE(gr2d_addr_regs); i++) set_bit(gr2d_addr_regs[i], gr2d->addr_regs); - platform_set_drvdata(pdev, gr2d); - return 0; } @@ -254,15 +274,56 @@ static int gr2d_remove(struct platform_device *pdev) return err; } + return 0; +} + +static int __maybe_unused gr2d_runtime_suspend(struct device *dev) +{ + struct gr2d *gr2d = dev_get_drvdata(dev); + clk_disable_unprepare(gr2d->clk); return 0; } +static int __maybe_unused gr2d_runtime_resume(struct device *dev) +{ + struct gr2d *gr2d = dev_get_drvdata(dev); + int err; + + err = clk_prepare_enable(gr2d->clk); + if (err) { + dev_err(dev, "failed to enable clock: %d\n", err); + return err; + } + + return 0; +} + +static __maybe_unused int gr2d_suspend(struct device *dev) +{ + struct gr2d *gr2d = dev_get_drvdata(dev); + int err; + + host1x_channel_stop(gr2d->channel); + + err = pm_runtime_force_suspend(dev); + if (err < 0) + return err; + + return 0; +} + +static const struct dev_pm_ops tegra_gr2d_pm = { + SET_RUNTIME_PM_OPS(gr2d_runtime_suspend, gr2d_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(gr2d_suspend, pm_runtime_force_resume) +}; + struct platform_driver tegra_gr2d_driver = { .driver = { .name = "tegra-gr2d", .of_match_table = gr2d_match, + .pm = &tegra_gr2d_pm, }, .probe = gr2d_probe, .remove = gr2d_remove,