From patchwork Fri May 5 11:26:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 13232558 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 4AB6AC77B7F for ; Fri, 5 May 2023 11:30:08 +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 535A72C87; Fri, 5 May 2023 13:29:16 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 535A72C87 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1683286206; bh=2xHE7OLaLEu5YnIpsbcTiVg8NSm5gHLV/BFpBcqFt24=; 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=nwoJ29T88K5PaPtI+yTxb4uwd+sYB0zASvMEuYkTxr5p6TgmEkPLgXlRkA4XZNnH9 XmuDmWNhTnlZCzQXXC/rRSaLnF/v62RelmpcZ2BTaQ3bvwAlga/+JFhU5sUW9c/vwd sz1QEwSFZ6tZ2tUvfYq/y7lgIfEpcSY1szMn9z+g= Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 7C3D3F804B1; Fri, 5 May 2023 13:29:15 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 018DFF80534; Fri, 5 May 2023 13:29:10 +0200 (CEST) Received: from wout1-smtp.messagingengine.com (wout1-smtp.messagingengine.com [64.147.123.24]) (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 17709F804B1 for ; Fri, 5 May 2023 13:29:08 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 17709F804B1 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=fm2 header.b=zKfr+iQ1; dkim=pass (2048-bit key, unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.a=rsa-sha256 header.s=fm3 header.b=fiZeUara Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.west.internal (Postfix) with ESMTP id 9630A3200A52; Fri, 5 May 2023 07:29:05 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute5.internal (MEProxy); Fri, 05 May 2023 07:29:06 -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=fm2; t= 1683286145; x=1683372545; bh=RULoxxWB0iLBkk0PFF8yhTtG0svGvyMyJ/v lpPgc8zY=; b=zKfr+iQ1KizgRdwiREK1HZwauMUzBEx+Ug9163XZfn62Y2RXRvX aJWGJrQlEt48l3cHV4JUVLB95SigfeVaQE0hPVYTM/PuKUSWOEySi3Xt7bkT7HWl UlFKLuntiWF7H0kI8TNp0G4wGojyIQwK21itsiZCSISSGHrMiqhIqHWJq6K3tjSF oJ4EKaMm2ZqfP31KcA4BU1S1c6kzcTvItm5UBZaaC5SyyOy9VeAwmFkpWMZ8lUSY IKSwrGCWF+hGA7Hu5Erh1qjNAM8m93Mf3pz8T+bsgQ1UauCtxLjDOZ0gEd/IvSzb DauNSNXvFzAU/RIn+8fDk2AF616YeVoMyAg== 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=fm3; t= 1683286145; x=1683372545; bh=RULoxxWB0iLBkk0PFF8yhTtG0svGvyMyJ/v lpPgc8zY=; b=fiZeUaraKBB+J/r/mof1g7Lbp5XM7TQpzWsCqTU+UxKa2EdXTpN wzVEw8Eb7ca3Rm84PgOhmHJDPnUqMMYpzwnUZTabaKfNivBEEkClANTzw+XOXz6P wfIVLHT06H807ST2uv86CBXMd+68uv2HMoD+PX0tMEBNUBz79slOwbkMeXZikOaL KuoIhIeGew6ZQ8aPjDcj4qMyr8SR/sLG9S3gZ64IPxzcFQtrMOSsDh1Yg8vuXD0p j/RH6IFiSb6LxUJk9llL/hSmXipwN0drFT9KbccV8phCzkLfw9kOX6T7hkEVG11w UvIbiQc+21An2ix9kSuv8X4ug3goqOQc7xA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrfeefvddggeduucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephfffufggtgfgkfhfjgfvvefosehtjeertdertdejnecuhfhrohhmpeforgig ihhmvgcutfhiphgrrhguuceomhgrgihimhgvsegtvghrnhhordhtvggthheqnecuggftrf grthhtvghrnhepvedvleeijeegvdekffehkeehieelhfeggfffheetkeeuledvtdeuffeh teeltdffnecuvehluhhsthgvrhfuihiivgepfeenucfrrghrrghmpehmrghilhhfrhhomh epmhgrgihimhgvsegtvghrnhhordhtvggthh X-ME-Proxy: Feedback-ID: i8771445c:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Fri, 5 May 2023 07:29:04 -0400 (EDT) From: Maxime Ripard Date: Fri, 05 May 2023 13:26:08 +0200 Subject: [PATCH v4 66/68] ASoC: tlv320aic32x4: pll: Switch to determine_rate MIME-Version: 1.0 Message-Id: <20221018-clk-range-checks-fixes-v4-66-971d5077e7d2@cerno.tech> References: <20221018-clk-range-checks-fixes-v4-0-971d5077e7d2@cerno.tech> In-Reply-To: <20221018-clk-range-checks-fixes-v4-0-971d5077e7d2@cerno.tech> To: Michael Turquette , Stephen Boyd X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=3244; i=maxime@cerno.tech; h=from:subject:message-id; bh=2xHE7OLaLEu5YnIpsbcTiVg8NSm5gHLV/BFpBcqFt24=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDCkhz5f+T1glNJ3rWNfa7PKzVr6PXsuX5GuJyS+9I7clyLfQ iXViRykLgxgXg6yYIkuMsPmSuFOzXney8c2DmcPKBDKEgYtTACZyYCYjQ6/wTo+fOy6kO7vHuU+N85 f8IsFytHZaRh/fMa6TKrHOXIwMhyW2dVjNs1pTNefeQTOWKRtjjPLTWLjtRfij0+cdSdzKDwA= X-Developer-Key: i=maxime@cerno.tech; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D Message-ID-Hash: O5TY36PTDMU3THQ3JERJEUSWFQUAWLE7 X-Message-ID-Hash: O5TY36PTDMU3THQ3JERJEUSWFQUAWLE7 X-MailFrom: maxime@cerno.tech 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-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: linux-clk@vger.kernel.org, Maxime Ripard , Liam Girdwood , Mark Brown , Takashi Iwai , alsa-devel@alsa-project.org 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 tlv320aic32x4 PLL 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. Cc: Jaroslav Kysela Cc: Liam Girdwood Cc: Mark Brown Cc: Takashi Iwai Cc: alsa-devel@alsa-project.org Signed-off-by: Maxime Ripard --- sound/soc/codecs/tlv320aic32x4-clk.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/sound/soc/codecs/tlv320aic32x4-clk.c b/sound/soc/codecs/tlv320aic32x4-clk.c index 80cbc6bc6847..e2de4617ab09 100644 --- a/sound/soc/codecs/tlv320aic32x4-clk.c +++ b/sound/soc/codecs/tlv320aic32x4-clk.c @@ -204,18 +204,23 @@ static unsigned long clk_aic32x4_pll_recalc_rate(struct clk_hw *hw, return clk_aic32x4_pll_calc_rate(&settings, parent_rate); } -static long clk_aic32x4_pll_round_rate(struct clk_hw *hw, - unsigned long rate, - unsigned long *parent_rate) +static int clk_aic32x4_pll_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { struct clk_aic32x4_pll_muldiv settings; + unsigned long rate; int ret; - ret = clk_aic32x4_pll_calc_muldiv(&settings, rate, *parent_rate); + ret = clk_aic32x4_pll_calc_muldiv(&settings, req->rate, req->best_parent_rate); if (ret < 0) - return 0; + return -EINVAL; - return clk_aic32x4_pll_calc_rate(&settings, *parent_rate); + rate = clk_aic32x4_pll_calc_rate(&settings, req->best_parent_rate); + if (rate < 0) + return rate; + + req->rate = rate; + return 0; } static int clk_aic32x4_pll_set_rate(struct clk_hw *hw, @@ -266,7 +271,7 @@ static const struct clk_ops aic32x4_pll_ops = { .unprepare = clk_aic32x4_pll_unprepare, .is_prepared = clk_aic32x4_pll_is_prepared, .recalc_rate = clk_aic32x4_pll_recalc_rate, - .round_rate = clk_aic32x4_pll_round_rate, + .determine_rate = clk_aic32x4_pll_determine_rate, .set_rate = clk_aic32x4_pll_set_rate, .set_parent = clk_aic32x4_pll_set_parent, .get_parent = clk_aic32x4_pll_get_parent,