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[46.138.46.211]) by smtp.gmail.com with ESMTPSA id p18sm1191280lfu.127.2021.11.14.11.36.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 14 Nov 2021 11:36:10 -0800 (PST) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Ulf Hansson , Viresh Kumar , Stephen Boyd , Peter De Schrijver , Mikko Perttunen , Lee Jones , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Nishanth Menon , Adrian Hunter , Michael Turquette Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org, linux-pwm@vger.kernel.org, linux-mmc@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-clk@vger.kernel.org, David Heidelberg Subject: [PATCH v15 15/39] drm/tegra: nvdec: Stop channel on suspend Date: Sun, 14 Nov 2021 22:34:11 +0300 Message-Id: <20211114193435.7705-16-digetx@gmail.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211114193435.7705-1-digetx@gmail.com> References: <20211114193435.7705-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org CDMA must be stopped before hardware is suspended. Add channel stopping to RPM suspend callback. Add system level suspend-resume callbacks. Runtime PM initialization is moved to host1x client init phase because RPM callback now uses host1x channel that is available only when host1x client is registered. Reviewed-by: Ulf Hansson Signed-off-by: Dmitry Osipenko --- drivers/gpu/drm/tegra/nvdec.c | 29 ++++++++++++++++++----------- 1 file changed, 18 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/tegra/nvdec.c b/drivers/gpu/drm/tegra/nvdec.c index 791bf1acf5f0..15f036e09e5c 100644 --- a/drivers/gpu/drm/tegra/nvdec.c +++ b/drivers/gpu/drm/tegra/nvdec.c @@ -113,9 +113,13 @@ static int nvdec_init(struct host1x_client *client) goto free_channel; } + pm_runtime_enable(client->dev); + pm_runtime_use_autosuspend(client->dev); + pm_runtime_set_autosuspend_delay(client->dev, 500); + err = tegra_drm_register_client(tegra, drm); if (err < 0) - goto free_syncpt; + goto disable_rpm; /* * Inherit the DMA parameters (such as maximum segment size) from the @@ -125,7 +129,10 @@ static int nvdec_init(struct host1x_client *client) return 0; -free_syncpt: +disable_rpm: + pm_runtime_dont_use_autosuspend(client->dev); + pm_runtime_force_suspend(client->dev); + host1x_syncpt_put(client->syncpts[0]); free_channel: host1x_channel_put(nvdec->channel); @@ -150,10 +157,15 @@ static int nvdec_exit(struct host1x_client *client) if (err < 0) return err; + pm_runtime_dont_use_autosuspend(client->dev); + pm_runtime_force_suspend(client->dev); + host1x_syncpt_put(client->syncpts[0]); host1x_channel_put(nvdec->channel); host1x_client_iommu_detach(client); + nvdec->channel = NULL; + if (client->group) { dma_unmap_single(nvdec->dev, nvdec->falcon.firmware.phys, nvdec->falcon.firmware.size, DMA_TO_DEVICE); @@ -268,6 +280,8 @@ static __maybe_unused int nvdec_runtime_suspend(struct device *dev) { struct nvdec *nvdec = dev_get_drvdata(dev); + host1x_channel_stop(nvdec->channel); + clk_disable_unprepare(nvdec->clk); return 0; @@ -412,10 +426,6 @@ static int nvdec_probe(struct platform_device *pdev) goto exit_falcon; } - pm_runtime_enable(&pdev->dev); - pm_runtime_set_autosuspend_delay(&pdev->dev, 500); - pm_runtime_use_autosuspend(&pdev->dev); - return 0; exit_falcon: @@ -436,11 +446,6 @@ static int nvdec_remove(struct platform_device *pdev) return err; } - if (pm_runtime_enabled(&pdev->dev)) - pm_runtime_disable(&pdev->dev); - else - nvdec_runtime_suspend(&pdev->dev); - falcon_exit(&nvdec->falcon); return 0; @@ -448,6 +453,8 @@ static int nvdec_remove(struct platform_device *pdev) static const struct dev_pm_ops nvdec_pm_ops = { SET_RUNTIME_PM_OPS(nvdec_runtime_suspend, nvdec_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) }; struct platform_driver tegra_nvdec_driver = {