From patchwork Tue Apr 4 10:11:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 13201301 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B0174C7619A for ; Wed, 5 Apr 2023 07:30:49 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 342B7826; Wed, 5 Apr 2023 09:29:57 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 342B7826 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1680679847; bh=8333PeT2/KzWZhagDIwcVPKozf2PZUw+5v/6zOhmLZU=; h=From:Date:Subject:References:In-Reply-To:To:CC:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=QX6w6cN0dpyZm7xcEqf8ShC9Y+r2r0/saaYbT8aOPdwTO8Te/TPhOrzqAtEM1FLW2 tHCEIgrkygv7rP27dORN9h8ljlPM9FSMUor+BsKHfmwMYeeMMgsGrQhpWb5aPKQ0RO lNnMXWkti0zIUPOQw9/YZacyE1dZejWMkamVbzz0= Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id CE1B3F80617; Wed, 5 Apr 2023 09:20:58 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 41E9DF80423; Tue, 4 Apr 2023 15:38:13 +0200 (CEST) Received: from new3-smtp.messagingengine.com (new3-smtp.messagingengine.com [66.111.4.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id D3F05F80171 for ; Tue, 4 Apr 2023 15:38:09 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz D3F05F80171 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=cerno.tech header.i=@cerno.tech header.a=rsa-sha256 header.s=fm3 header.b=L9mGQKkw; dkim=pass (2048-bit key, unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.a=rsa-sha256 header.s=fm2 header.b=qszeYJ9K Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailnew.nyi.internal (Postfix) with ESMTP id 6CD035821D0; Tue, 4 Apr 2023 09:38:08 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute2.internal (MEProxy); Tue, 04 Apr 2023 09:38:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cerno.tech; h=cc :cc:content-transfer-encoding:content-type:content-type:date :date:from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:sender:subject:subject:to:to; s=fm3; t= 1680615488; x=1680622688; bh=w/NGMFrb8QTcCuZ8wdq85ubGDU5tXhnYdVU vLJSNPlQ=; b=L9mGQKkw5iXBXyEodA3GoaRQvXenxma6gy8ZlZhYU+rKl8AOmMu zi0znMfYY1Aexcn0gbp0iwJiY9Yx/GN5aJ128m4rHDRO1PKXLY5pQ6zWO3841Iy+ L7reSMBUSmo2ggPk6VoVCZsopOu69T35yvvBc4rPRlkpntl4+anYvXgqIenhT1PB mwv+pFQZPcPUAj0x62FfJalroZNDBOZZ8lmQMZTKboWvcd+mWhm/Eb3sXUOKYu+J bV5U6hUUNMjPSCSdJD9s3tktKwssuRCICDgnM1AyuLKVHy/CqFyJFjdym5XUCrDa 07krSHRXPrtDHgqaOk6A48B6mghVO9H5fSg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:feedback-id:feedback-id :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:sender:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t= 1680615488; x=1680622688; bh=w/NGMFrb8QTcCuZ8wdq85ubGDU5tXhnYdVU vLJSNPlQ=; b=qszeYJ9KKawsd0PI0BDrFf3it3X2f7FBo/GfNnwQ98axiRNuZIR FkdfurIhddpdFeNrERlZTW8JHJBCH9BfmDZucalqj7rxDw+iB6gT+Zn650fKz4wP QAvzUnSeFSuViEzqlR4pJtWMu861lnbpqUFWk77CKL7AvBGk/XahX/4/OjqGyAmJ RgLIiRZIDFdVkTymgty8nDYsqzsg0qxTvRQq6pbxH5sam/2pTs5hm1oVcxOK0SqE XFZ6kcfyjXCeg0obwCMW4J0I1NS1H/BOF9klWNW6/Sc406u2YQ2SY+YYXs7MYHW9 9N2L6ZSPQOO65x9tmETVD3VVXyFHUVlLeRQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrvdeiledgieeiucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephfffufggtgfgkfhfjgfvvefosehtjeertdertdejnecuhfhrohhmpeforgig ihhmvgcutfhiphgrrhguuceomhgrgihimhgvsegtvghrnhhordhtvggthheqnecuggftrf grthhtvghrnhepvedvleeijeegvdekffehkeehieelhfeggfffheetkeeuledvtdeuffeh teeltdffnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomh epmhgrgihimhgvsegtvghrnhhordhtvggthh X-ME-Proxy: Feedback-ID: i8771445c:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Tue, 4 Apr 2023 09:38:04 -0400 (EDT) From: Maxime Ripard Date: Tue, 04 Apr 2023 12:11:39 +0200 Subject: [PATCH v3 49/65] clk: cdce706: clkout: Switch to determine_rate MIME-Version: 1.0 Message-Id: <20221018-clk-range-checks-fixes-v3-49-9a1358472d52@cerno.tech> References: <20221018-clk-range-checks-fixes-v3-0-9a1358472d52@cerno.tech> In-Reply-To: <20221018-clk-range-checks-fixes-v3-0-9a1358472d52@cerno.tech> To: Michael Turquette , Stephen Boyd , =?utf-8?q?Andreas_F=C3=A4rber?= , Manivannan Sadhasivam , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Max Filippov , Charles Keepax , Richard Fitzgerald , Maxime Coquelin , Alexandre Torgue , Luca Ceresoli , David Lechner , Sekhar Nori , Abel Vesa , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Matthias Brugger , Geert Uytterhoeven , Dinh Nguyen , Peter De Schrijver , Prashant Gaikwad , Thierry Reding , Jonathan Hunter , Ulf Hansson , Linus Walleij , David Airlie , Daniel Vetter , Vinod Koul , Kishon Vijay Abraham I , Alessandro Zummo , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Paul Cercueil , Orson Zhai , Baolin Wang , Chunyan Zhang X-Mailer: b4 0.12.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=2491; i=maxime@cerno.tech; h=from:subject:message-id; bh=8333PeT2/KzWZhagDIwcVPKozf2PZUw+5v/6zOhmLZU=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDCna37f76B24pX2OTc1NX6pqLdeXG+rBOSkzctfwePloGulL CQt0lLIwiHExyIopssQImy+JOzXrdScb3zyYOaxMIEMYuDgFYCJ/jjIyzO+/dHHa9JU3nzkcm5ASdm 7yz7QKnbTTC+U0F+1+q/juzyFGhmtnr5ooWM0yP7TpbZnSpDyV9NIPk5Pkttj9qBFWdv81nxUA X-Developer-Key: i=maxime@cerno.tech; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D X-MailFrom: maxime@cerno.tech X-Mailman-Rule-Hits: max-recipients X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-size; news-moderation; no-subject; digests; suspicious-header Message-ID-Hash: TGNTJV23SHJZT5HHO256FSAKDK5XNB7P X-Message-ID-Hash: TGNTJV23SHJZT5HHO256FSAKDK5XNB7P X-Mailman-Approved-At: Wed, 05 Apr 2023 07:18:44 +0000 CC: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, AngeloGioacchino Del Regno , linux-arm-kernel@lists.infradead.org, linux-actions@lists.infradead.org, patches@opensource.cirrus.com, linux-stm32@st-md-mailman.stormreply.com, linux-mediatek@lists.infradead.org, linux-renesas-soc@vger.kernel.org, linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-phy@lists.infradead.org, linux-rtc@vger.kernel.org, linux-sunxi@lists.linux.dev, alsa-devel@alsa-project.org, linux-mips@vger.kernel.org, Maxime Ripard X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: The cdce706 clkout clocks implements a mux with a set_parent hook, but doesn't provide a determine_rate implementation. This is a bit odd, since set_parent() is there to, as its name implies, change the parent of a clock. However, the most likely candidate to trigger that parent change is a call to clk_set_rate(), with determine_rate() figuring out which parent is the best suited for a given rate. The other trigger would be a call to clk_set_parent(), but it's far less used, and it doesn't look like there's any obvious user for that clock. So, the set_parent hook is effectively unused, possibly because of an oversight. However, it could also be an explicit decision by the original author to avoid any reparenting but through an explicit call to clk_set_parent(). The driver does implement round_rate() though, which means that we can change the rate of the clock, but we will never get to change the parent. However, It's hard to tell whether it's been done on purpose or not. Since we'll start mandating a determine_rate() implementation, let's convert the round_rate() implementation to a determine_rate(), which will also make the current behavior explicit. And if it was an oversight, the clock behaviour can be adjusted later on. Signed-off-by: Maxime Ripard --- drivers/clk/clk-cdce706.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/clk/clk-cdce706.c b/drivers/clk/clk-cdce706.c index a53769d239a9..0a560b4d295e 100644 --- a/drivers/clk/clk-cdce706.c +++ b/drivers/clk/clk-cdce706.c @@ -423,11 +423,12 @@ static unsigned long cdce706_clkout_recalc_rate(struct clk_hw *hw, return parent_rate; } -static long cdce706_clkout_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *parent_rate) +static int cdce706_clkout_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { - *parent_rate = rate; - return rate; + req->best_parent_rate = req->rate; + + return 0; } static int cdce706_clkout_set_rate(struct clk_hw *hw, unsigned long rate, @@ -442,7 +443,7 @@ static const struct clk_ops cdce706_clkout_ops = { .set_parent = cdce706_clkout_set_parent, .get_parent = cdce706_clkout_get_parent, .recalc_rate = cdce706_clkout_recalc_rate, - .round_rate = cdce706_clkout_round_rate, + .determine_rate = cdce706_clkout_determine_rate, .set_rate = cdce706_clkout_set_rate, };