From patchwork Sat May 9 20:06:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Samuel Holland X-Patchwork-Id: 11538525 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 8859B15AB for ; Sat, 9 May 2020 20:12:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 69CD020731 for ; Sat, 9 May 2020 20:12:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=sholland.org header.i=@sholland.org header.b="FhXQug0c"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="blkiEVYg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728682AbgEIUMS (ORCPT ); Sat, 9 May 2020 16:12:18 -0400 Received: from wnew1-smtp.messagingengine.com ([64.147.123.26]:39383 "EHLO wnew1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728244AbgEIUMR (ORCPT ); Sat, 9 May 2020 16:12:17 -0400 X-Greylist: delayed 494 seconds by postgrey-1.27 at vger.kernel.org; Sat, 09 May 2020 16:12:16 EDT Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailnew.west.internal (Postfix) with ESMTP id 6DA555B1; Sat, 9 May 2020 16:05:46 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute3.internal (MEProxy); Sat, 09 May 2020 16:05:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sholland.org; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type:content-transfer-encoding; s=fm2; bh= ITst3Zesw15C9r4bhKYzEsQqTWU1MwXxemh1A21dekg=; b=FhXQug0cmxzeHDZG EQ2mv8DgCtcG73fUcrH5WY2iDa3CdQZtRdTIDemxCtjYgtshZrVDR2q4UAM2+fi1 WwswZjb39P3c0clsOrfj4NItGdgo6cBzSTIJY3e1Yr4mQRinWQ5kky9sDb/yID7h d3EqoJFaRTelbygJDV/1NMadGlcfvWG+xHG8XMyC1nhUe8Vsq+DnhoiLIqVERFf6 ahYpV7nferlComy0q9xu+WidBvJa3leXWUZtZgd9EcE1FHxt2FkoB7XmfbDjlT7q m5a/mJTWniaaEjB8PNvjfPEhkGf4IVSMsTUN/gyISyXkbqYdUTVqExm7FLtckE/9 iCrKAg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm2; bh=ITst3Zesw15C9r4bhKYzEsQqTWU1MwXxemh1A21de kg=; b=blkiEVYghsOujEpuE1Xe9EwUIM8omR1Cymx1dWzPd0wdQfeUPWOHJ8Iq9 O/jE1gse3CWJ7Qw0eqUdioOD3yF/Z3SEmcUpzzXzS/MSvD9ErwjfiAm7pPQOj2wa l1esSmjSww5yUjmXi9NhsQeY2bNC8BWZ91f4shrfAZJtEnRvVwIHeNbI9LAcr3SA +Tk8u9j48NnElL7GzPzAOBVoicXcOHskFDc+AohuSMNbsJmlBuwzVIR46vqFju6B ZL8QuoEgB3r4kGli8V3ddo+TZeQy6qYyBGBWhNFluWBbhNGJMfKrSwSMHTfJ7U3l qYtedBo5LQfcGo6mLdY+G/UveSrOw== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduhedrkeehgddugeegucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvufffkffojghfgggtgfesthekredtredtjeenucfhrhhomhepufgrmhhu vghlucfjohhllhgrnhguuceoshgrmhhuvghlsehshhholhhlrghnugdrohhrgheqnecugg ftrfgrthhtvghrnhepfedvffetgeduiedtfffgleelvdfhheekkeduffetuddvgeeffedu fefhgeehueejnecukfhppeejtddrudefhedrudegkedrudehudenucevlhhushhtvghruf hiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehsrghmuhgvlhesshhhohhllhgr nhgurdhorhhg X-ME-Proxy: Received: from titanium.stl.sholland.net (70-135-148-151.lightspeed.stlsmo.sbcglobal.net [70.135.148.151]) by mail.messagingengine.com (Postfix) with ESMTPA id A73253066245; Sat, 9 May 2020 16:05:43 -0400 (EDT) From: Samuel Holland To: Maxime Ripard , Paul Kocialkowski , Chen-Yu Tsai , Mauro Carvalho Chehab , Greg Kroah-Hartman Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-sunxi@googlegroups.com, Samuel Holland , stable@vger.kernel.org, Jernej Skrabec , Ezequiel Garcia Subject: [PATCH v3 2/2] media: cedrus: Implement runtime PM Date: Sat, 9 May 2020 15:06:43 -0500 Message-Id: <20200509200643.30597-2-samuel@sholland.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200509200643.30597-1-samuel@sholland.org> References: <20200509200643.30597-1-samuel@sholland.org> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Jernej Skrabec This allows the VE clocks and PLL_VE to be disabled most of the time. A runtime PM reference is held while streaming. Signed-off-by: Jernej Skrabec Signed-off-by: Samuel Holland Tested-by: Jernej Skrabec Reviewed-by: Ezequiel Garcia --- v2: moved PM reference to cedrus_{start,stop}_streaming, based on an earlier patch by Jernej Skrabec. Removes the need for autosuspend. I tested this with running 2x v4l2-request-test in parallel. v3: changed authorship to Jernej, collected tags --- drivers/staging/media/sunxi/cedrus/cedrus.c | 7 ++ .../staging/media/sunxi/cedrus/cedrus_hw.c | 106 ++++++++++++------ .../staging/media/sunxi/cedrus/cedrus_hw.h | 3 + .../staging/media/sunxi/cedrus/cedrus_video.c | 33 ++++-- 4 files changed, 104 insertions(+), 45 deletions(-) diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.c b/drivers/staging/media/sunxi/cedrus/cedrus.c index 05a85517ff60..bc27f9430eeb 100644 --- a/drivers/staging/media/sunxi/cedrus/cedrus.c +++ b/drivers/staging/media/sunxi/cedrus/cedrus.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -551,12 +552,18 @@ static const struct of_device_id cedrus_dt_match[] = { }; MODULE_DEVICE_TABLE(of, cedrus_dt_match); +static const struct dev_pm_ops cedrus_dev_pm_ops = { + SET_RUNTIME_PM_OPS(cedrus_hw_suspend, + cedrus_hw_resume, NULL) +}; + static struct platform_driver cedrus_driver = { .probe = cedrus_probe, .remove = cedrus_remove, .driver = { .name = CEDRUS_NAME, .of_match_table = of_match_ptr(cedrus_dt_match), + .pm = &cedrus_dev_pm_ops, }, }; module_platform_driver(cedrus_driver); diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c index daf5f244f93b..1744e6fcc999 100644 --- a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c +++ b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -140,6 +141,64 @@ static irqreturn_t cedrus_irq(int irq, void *data) return IRQ_HANDLED; } +int cedrus_hw_suspend(struct device *device) +{ + struct cedrus_dev *dev = dev_get_drvdata(device); + + reset_control_assert(dev->rstc); + + clk_disable_unprepare(dev->ram_clk); + clk_disable_unprepare(dev->mod_clk); + clk_disable_unprepare(dev->ahb_clk); + + return 0; +} + +int cedrus_hw_resume(struct device *device) +{ + struct cedrus_dev *dev = dev_get_drvdata(device); + int ret; + + ret = clk_prepare_enable(dev->ahb_clk); + if (ret) { + dev_err(dev->dev, "Failed to enable AHB clock\n"); + + return ret; + } + + ret = clk_prepare_enable(dev->mod_clk); + if (ret) { + dev_err(dev->dev, "Failed to enable MOD clock\n"); + + goto err_ahb_clk; + } + + ret = clk_prepare_enable(dev->ram_clk); + if (ret) { + dev_err(dev->dev, "Failed to enable RAM clock\n"); + + goto err_mod_clk; + } + + ret = reset_control_reset(dev->rstc); + if (ret) { + dev_err(dev->dev, "Failed to apply reset\n"); + + goto err_ram_clk; + } + + return 0; + +err_ram_clk: + clk_disable_unprepare(dev->ram_clk); +err_mod_clk: + clk_disable_unprepare(dev->mod_clk); +err_ahb_clk: + clk_disable_unprepare(dev->ahb_clk); + + return ret; +} + int cedrus_hw_probe(struct cedrus_dev *dev) { const struct cedrus_variant *variant; @@ -236,42 +295,17 @@ int cedrus_hw_probe(struct cedrus_dev *dev) goto err_sram; } - ret = clk_prepare_enable(dev->ahb_clk); - if (ret) { - dev_err(dev->dev, "Failed to enable AHB clock\n"); - - goto err_sram; - } - - ret = clk_prepare_enable(dev->mod_clk); - if (ret) { - dev_err(dev->dev, "Failed to enable MOD clock\n"); - - goto err_ahb_clk; - } - - ret = clk_prepare_enable(dev->ram_clk); - if (ret) { - dev_err(dev->dev, "Failed to enable RAM clock\n"); - - goto err_mod_clk; - } - - ret = reset_control_reset(dev->rstc); - if (ret) { - dev_err(dev->dev, "Failed to apply reset\n"); - - goto err_ram_clk; + pm_runtime_enable(dev->dev); + if (!pm_runtime_enabled(dev->dev)) { + ret = cedrus_hw_resume(dev->dev); + if (ret) + goto err_pm; } return 0; -err_ram_clk: - clk_disable_unprepare(dev->ram_clk); -err_mod_clk: - clk_disable_unprepare(dev->mod_clk); -err_ahb_clk: - clk_disable_unprepare(dev->ahb_clk); +err_pm: + pm_runtime_disable(dev->dev); err_sram: sunxi_sram_release(dev->dev); err_mem: @@ -282,11 +316,9 @@ int cedrus_hw_probe(struct cedrus_dev *dev) void cedrus_hw_remove(struct cedrus_dev *dev) { - reset_control_assert(dev->rstc); - - clk_disable_unprepare(dev->ram_clk); - clk_disable_unprepare(dev->mod_clk); - clk_disable_unprepare(dev->ahb_clk); + pm_runtime_disable(dev->dev); + if (!pm_runtime_status_suspended(dev->dev)) + cedrus_hw_suspend(dev->dev); sunxi_sram_release(dev->dev); diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_hw.h b/drivers/staging/media/sunxi/cedrus/cedrus_hw.h index 604ff932fbf5..45f641f0bfa2 100644 --- a/drivers/staging/media/sunxi/cedrus/cedrus_hw.h +++ b/drivers/staging/media/sunxi/cedrus/cedrus_hw.h @@ -22,6 +22,9 @@ void cedrus_engine_disable(struct cedrus_dev *dev); void cedrus_dst_format_set(struct cedrus_dev *dev, struct v4l2_pix_format *fmt); +int cedrus_hw_suspend(struct device *device); +int cedrus_hw_resume(struct device *device); + int cedrus_hw_probe(struct cedrus_dev *dev); void cedrus_hw_remove(struct cedrus_dev *dev); diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_video.c b/drivers/staging/media/sunxi/cedrus/cedrus_video.c index ed3f511f066f..16d82309e7b6 100644 --- a/drivers/staging/media/sunxi/cedrus/cedrus_video.c +++ b/drivers/staging/media/sunxi/cedrus/cedrus_video.c @@ -13,6 +13,8 @@ * Marek Szyprowski, */ +#include + #include #include #include @@ -450,12 +452,24 @@ static int cedrus_start_streaming(struct vb2_queue *vq, unsigned int count) return -EINVAL; } - if (V4L2_TYPE_IS_OUTPUT(vq->type) && - dev->dec_ops[ctx->current_codec]->start) - ret = dev->dec_ops[ctx->current_codec]->start(ctx); + if (V4L2_TYPE_IS_OUTPUT(vq->type)) { + ret = pm_runtime_get_sync(dev->dev); + if (ret < 0) + goto err_cleanup; - if (ret) - cedrus_queue_cleanup(vq, VB2_BUF_STATE_QUEUED); + if (dev->dec_ops[ctx->current_codec]->start) { + ret = dev->dec_ops[ctx->current_codec]->start(ctx); + if (ret) + goto err_pm; + } + } + + return 0; + +err_pm: + pm_runtime_put(dev->dev); +err_cleanup: + cedrus_queue_cleanup(vq, VB2_BUF_STATE_QUEUED); return ret; } @@ -465,9 +479,12 @@ static void cedrus_stop_streaming(struct vb2_queue *vq) struct cedrus_ctx *ctx = vb2_get_drv_priv(vq); struct cedrus_dev *dev = ctx->dev; - if (V4L2_TYPE_IS_OUTPUT(vq->type) && - dev->dec_ops[ctx->current_codec]->stop) - dev->dec_ops[ctx->current_codec]->stop(ctx); + if (V4L2_TYPE_IS_OUTPUT(vq->type)) { + if (dev->dec_ops[ctx->current_codec]->stop) + dev->dec_ops[ctx->current_codec]->stop(ctx); + + pm_runtime_put(dev->dev); + } cedrus_queue_cleanup(vq, VB2_BUF_STATE_ERROR); }