From patchwork Sun Aug 6 13:06:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Oltmanns X-Patchwork-Id: 13342852 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 2CCD4C04FDF for ; Sun, 6 Aug 2023 13:08:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Sun, 6 Aug 2023 15:07:38 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oltmanns.dev; s=MBO0001; t=1691327258; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=TjD5RUuDvuJH5h092AsaV1mTvvtxTHcezWL7uVLhzVw=; b=WCIkSL59yRzbxO7Cd+5CXfhrgRYJ/GOmpNs51kMCd5Bu7oVwa9XhpUsS5bX32JmZEfdrUT wYb0CVU2wPmreomP1pEOvXC5p/pwsTIlQvJVdS+aqY1SxmhYRDk8B/0daapvaFsdFV2eD1 Zqki1CdcY/gsArMj30ul0jFvLWIE7nwNxj3FNzX0ISkswUKJCs7CRYJFQLG2EmdFzplg22 AhtzSWPG/pCXTE3BWfgPA2+avtkupHPuNgEwitIlOOmTUE805Vb0u4YCbjqGxTeGmp+QvX JgOEhNrs7NAHUglyt2LNbOU6xBoseWpcydZIJdBRkgRYq+NkT+ccNQG3haNPJw== From: Frank Oltmanns Date: Sun, 06 Aug 2023 15:06:53 +0200 Subject: [PATCH v5 08/11] clk: sunxi-ng: mux: Support finding closest rate MIME-Version: 1.0 Message-Id: <20230806-pll-mipi_set_rate_parent-v5-8-db4f5ca33fc3@oltmanns.dev> References: <20230806-pll-mipi_set_rate_parent-v5-0-db4f5ca33fc3@oltmanns.dev> In-Reply-To: <20230806-pll-mipi_set_rate_parent-v5-0-db4f5ca33fc3@oltmanns.dev> To: Maxime Ripard , Michael Turquette , Stephen Boyd , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Andre Przywara , Roman Beranek Cc: linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, Frank Oltmanns X-Developer-Signature: v=1; a=openpgp-sha256; l=3440; i=frank@oltmanns.dev; h=from:subject:message-id; bh=OvKXg4vQ+wbmZqDkAPDAPHykvEpUGR9vUTxoWn/TvUI=; b=owEB7QES/pANAwAIAZppogiUStPHAcsmYgBkz5sH2rQD7N/pKO3IK5DJNPbc4o7hwgupuHQYO TDQwMj2j4iJAbMEAAEIAB0WIQQC/SV7f5DmuaVET5aaaaIIlErTxwUCZM+bBwAKCRCaaaIIlErT x5riC/wJLP4De2988WYJxP7YFoz01YlNlZ5JrrNcLp6JQXF9WgmXZLSszca6hxejUI4Ls+oy2yr mwh3tHNoWMxP0S/heYro7SWGvsMfnKJrjT/N4zP4qPBbraqeMHT9VcNRO5o8llNXopH5d+zxYkn uk4XNFB0beUcnesz+4YUirpwxBwvlvpvrF5B1BMltbjrVkJNuQQobsDnxXAYQGcL2MLuddks0SQ zwK1rRBuTKs2gGysrmWd3bc/ZBQyo+ta8bPc6JlpkPwA7Iw10yO1OhpgkA97ZttwUw6K0o443dj U6rvciUazUIk4tW+MREXoCnOJ5U5PrRtiFxSqfVP8Af+AUj4T0M7gyk0giiYZ9alYK+kwHlV+GP /SSudMzjQMFGtTYsR3LuY0ju2+1PWpqg748JPGMB0SjTbpuiku+7UGED5fEHYepVdB8QWhqeJTS F9104esWTQYC5u8VZWq/rPGVyialabn9GLuNlkvYPJNEb93Ws9s62FyQy9sRx7GZeI0uI= X-Developer-Key: i=frank@oltmanns.dev; a=openpgp; fpr=02FD257B7F90E6B9A5444F969A69A208944AD3C7 X-Rspamd-Queue-Id: 4RJfrB21Yxz9smF X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230806_060741_304295_68372735 X-CRM114-Status: GOOD ( 12.56 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org When finding the best rate for a mux clock, consider rates that are higher than the requested rate when CCU_FEATURE_ROUND_CLOSEST is used. Furthermore, introduce an initialization macro that sets this flag. Acked-by: Maxime Ripard Signed-off-by: Frank Oltmanns Reviewed-by: Jernej Skrabec --- drivers/clk/sunxi-ng/ccu_mux.c | 13 ++++++++++++- drivers/clk/sunxi-ng/ccu_mux.h | 38 +++++++++++++++++++++++++++----------- 2 files changed, 39 insertions(+), 12 deletions(-) diff --git a/drivers/clk/sunxi-ng/ccu_mux.c b/drivers/clk/sunxi-ng/ccu_mux.c index 3ca695439620..5edc63b46651 100644 --- a/drivers/clk/sunxi-ng/ccu_mux.c +++ b/drivers/clk/sunxi-ng/ccu_mux.c @@ -242,6 +242,17 @@ static int ccu_mux_set_parent(struct clk_hw *hw, u8 index) return ccu_mux_helper_set_parent(&cm->common, &cm->mux, index); } +static int ccu_mux_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + struct ccu_mux *cm = hw_to_ccu_mux(hw); + + if (cm->common.features & CCU_FEATURE_CLOSEST_RATE) + return clk_mux_determine_rate_flags(hw, req, CLK_MUX_ROUND_CLOSEST); + + return clk_mux_determine_rate_flags(hw, req, 0); +} + static unsigned long ccu_mux_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { @@ -259,7 +270,7 @@ const struct clk_ops ccu_mux_ops = { .get_parent = ccu_mux_get_parent, .set_parent = ccu_mux_set_parent, - .determine_rate = __clk_mux_determine_rate, + .determine_rate = ccu_mux_determine_rate, .recalc_rate = ccu_mux_recalc_rate, }; EXPORT_SYMBOL_NS_GPL(ccu_mux_ops, SUNXI_CCU); diff --git a/drivers/clk/sunxi-ng/ccu_mux.h b/drivers/clk/sunxi-ng/ccu_mux.h index 2c1811a445b0..eb1172ebbd94 100644 --- a/drivers/clk/sunxi-ng/ccu_mux.h +++ b/drivers/clk/sunxi-ng/ccu_mux.h @@ -46,20 +46,36 @@ struct ccu_mux { struct ccu_common common; }; +#define SUNXI_CCU_MUX_TABLE_WITH_GATE_FEAT(_struct, _name, _parents, _table, \ + _reg, _shift, _width, _gate, \ + _flags, _features) \ + struct ccu_mux _struct = { \ + .enable = _gate, \ + .mux = _SUNXI_CCU_MUX_TABLE(_shift, _width, _table), \ + .common = { \ + .reg = _reg, \ + .hw.init = CLK_HW_INIT_PARENTS(_name, \ + _parents, \ + &ccu_mux_ops, \ + _flags), \ + .features = _features, \ + } \ + } + +#define SUNXI_CCU_MUX_TABLE_WITH_GATE_CLOSEST(_struct, _name, _parents, \ + _table, _reg, _shift, \ + _width, _gate, _flags) \ + SUNXI_CCU_MUX_TABLE_WITH_GATE_FEAT(_struct, _name, _parents, \ + _table, _reg, _shift, \ + _width, _gate, _flags, \ + CCU_FEATURE_CLOSEST_RATE) + #define SUNXI_CCU_MUX_TABLE_WITH_GATE(_struct, _name, _parents, _table, \ _reg, _shift, _width, _gate, \ _flags) \ - struct ccu_mux _struct = { \ - .enable = _gate, \ - .mux = _SUNXI_CCU_MUX_TABLE(_shift, _width, _table), \ - .common = { \ - .reg = _reg, \ - .hw.init = CLK_HW_INIT_PARENTS(_name, \ - _parents, \ - &ccu_mux_ops, \ - _flags), \ - } \ - } + SUNXI_CCU_MUX_TABLE_WITH_GATE_FEAT(_struct, _name, _parents, \ + _table, _reg, _shift, \ + _width, _gate, _flags, 0) #define SUNXI_CCU_MUX_WITH_GATE(_struct, _name, _parents, _reg, \ _shift, _width, _gate, _flags) \