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[90.63.244.31]) by smtp.gmail.com with ESMTPSA id m6sm10862084wrq.95.2019.08.27.02.58.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Aug 2019 02:58:29 -0700 (PDT) From: Neil Armstrong To: dri-devel@lists.freedesktop.org Subject: [PATCH 2/2] drm/meson: add resume/suspend hooks Date: Tue, 27 Aug 2019 11:58:25 +0200 Message-Id: <20190827095825.21015-3-narmstrong@baylibre.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190827095825.21015-1-narmstrong@baylibre.com> References: <20190827095825.21015-1-narmstrong@baylibre.com> MIME-Version: 1.0 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=wbdxbxYZcKVLdPE0Y/8WQgSXBgDUmbVqM2Rjtf0OVOI=; b=mOB8HFsHRuuCRYt9Kp+g2Vrx/KvyTnWXGglzhl804o2JfqJ/QDMeTgZoO+Ued+xtAJ TsIhTzlWDYZdbIWQcdYRQomzPGGDcnNvhXxY5ncQKWOpnCKWoaRWuZ8Vg/I7othlgGnc 8UMoMLp1R1rWbJ9ya7spTIgvhPMIs0kwWyOxJYppM3Hc2stPXW/gJiRVeOGl9ICcfVOr JnOpENKyJyp37NeDesmyZP6FSvgqpY+YBz/ld3SmFp0pMHPad2BWgChIlhkMP3+ugTgm VyxwniLooNR/upSBilO/t4y9/bdbW2v+nwtyLjrOKOBljWrmUnAuJRfc+sCrxF07LpAq VulA== X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: khilman@baylibre.com, Neil Armstrong , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add the suspend and resume hooks to: - save and disable the entire DRM driver on suspend - re-init the entire VPU subsystem on resume, to recover CRTC and pixel generator functionnal usage after DDR suspend, then recover DRM driver state Signed-off-by: Neil Armstrong --- drivers/gpu/drm/meson/meson_drv.c | 32 +++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c index 2310c96fff46..dc573ffd1f4c 100644 --- a/drivers/gpu/drm/meson/meson_drv.c +++ b/drivers/gpu/drm/meson/meson_drv.c @@ -361,6 +361,33 @@ static const struct component_master_ops meson_drv_master_ops = { .unbind = meson_drv_unbind, }; +static int __maybe_unused meson_drv_pm_suspend(struct device *dev) +{ + struct meson_drm *priv = dev_get_drvdata(dev); + + if (!priv) + return 0; + + return drm_mode_config_helper_suspend(priv->drm); +} + +static int __maybe_unused meson_drv_pm_resume(struct device *dev) +{ + struct meson_drm *priv = dev_get_drvdata(dev); + + if (!priv) + return 0; + + meson_vpu_init(priv); + meson_venc_init(priv); + meson_vpp_init(priv); + meson_viu_init(priv); + + drm_mode_config_helper_resume(priv->drm); + + return 0; +} + static int compare_of(struct device *dev, void *data) { DRM_DEBUG_DRIVER("Comparing of node %pOF with %pOF\n", @@ -452,11 +479,16 @@ static const struct of_device_id dt_match[] = { }; MODULE_DEVICE_TABLE(of, dt_match); +static const struct dev_pm_ops meson_drv_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(meson_drv_pm_suspend, meson_drv_pm_resume) +}; + static struct platform_driver meson_drm_platform_driver = { .probe = meson_drv_probe, .driver = { .name = "meson-drm", .of_match_table = dt_match, + .pm = &meson_drv_pm_ops, }, };