From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E4CE2C4727F for ; Thu, 1 Oct 2020 02:18:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AEDAD22204 for ; Thu, 1 Oct 2020 02:18:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731478AbgJACNA (ORCPT ); Wed, 30 Sep 2020 22:13:00 -0400 Received: from new4-smtp.messagingengine.com ([66.111.4.230]:42651 "EHLO new4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730320AbgJACL6 (ORCPT ); Wed, 30 Sep 2020 22:11:58 -0400 Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailnew.nyi.internal (Postfix) with ESMTP id 2DA4A580375; Wed, 30 Sep 2020 22:11:56 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute5.internal (MEProxy); Wed, 30 Sep 2020 22:11:56 -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-transfer-encoding; s=fm3; bh=/bhxd1svwQTQK rVdAoO4naAM8pRc9Q0oebJmrLNI+Go=; b=DPMTZy1JTuNp8bGdp0k6tmWkm0J3L FNrdCXvI7DRMTwKyqoPpr0nziwdZxwXPRH3ICXfa5TRd0gSh/oQZwREwld7r1iLd r4h5U+TvOScX7uGmgeVqY2sj7dhyD8+bOK3OaAJior/yA2rFp5U2W6IAx4DAmlDS ZmoAegZ/pUzjSE/bLmvZ00t8gxQUWEF7NPm8FfReKdCYABww2zgNrEvVIFWYZOv5 jrVEGMUJAoZ+eALLXENwlnwguU8WSyZ8PYNyn6bowSo+sRIC6vUCUS/T2lgS/NqV JojF+Hr388pZLDcBWRETR03fAyIJCt5FVY65GSv23fsYuP6oPH5D9KaVA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding: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= fm3; bh=/bhxd1svwQTQKrVdAoO4naAM8pRc9Q0oebJmrLNI+Go=; b=CbXfEYTo Rdshd2dv9TwKsrbIqXmDAKxdUmZKK8NUMg5QsH7XhsTrHh8Knji5JEK4Ywaapcma ItReHHUQrv+hjw2JNLl4iJVyQKH6yKxpUZAM0ybZIv1fgFlDcw74qnq/UuDa3V52 6bmYqKOkh0lUObdOeWUvk8i0lRXHdEbOZ536ulA31eamp5JGGGBkQ4d1FxNQq8l5 MW+26yky67HznwQwR1sTBNXwa/NEkj4t0RbCKjyjQO7zkw0bnysSxipnQoemlQ5N H8887GxvSIpryzeqQ+NskD10HeZDzOLfFQ590+NWSXlmrbSvhVyQXGmM5iHvKdKW UyEXhgfQBIKzjQ== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedujedrfeefgdehkecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefhvffufffkofgjfhgggfestdekredtredttdenucfhrhhomhepufgrmhhuvghl ucfjohhllhgrnhguuceoshgrmhhuvghlsehshhholhhlrghnugdrohhrgheqnecuggftrf grthhtvghrnhepudfhjeefvdfhgfefheetgffhieeigfefhefgvddvveefgeejheejvdfg jeehueeinecukfhppeejtddrudefhedrudegkedrudehudenucevlhhushhtvghrufhiii gvpeegnecurfgrrhgrmhepmhgrihhlfhhrohhmpehsrghmuhgvlhesshhhohhllhgrnhgu rdhorhhg 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 750E5306467E; Wed, 30 Sep 2020 22:11:55 -0400 (EDT) From: Samuel Holland To: Mark Brown , Liam Girdwood , Maxime Ripard , Chen-Yu Tsai , Jaroslav Kysela , Takashi Iwai Cc: Ondrej Jirman , alsa-devel@alsa-project.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Samuel Holland Subject: [PATCH 13/25] ASoC: sun8i-codec: Round up the LRCK divisor Date: Wed, 30 Sep 2020 21:11:36 -0500 Message-Id: <20201001021148.15852-14-samuel@sholland.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201001021148.15852-1-samuel@sholland.org> References: <20201001021148.15852-1-samuel@sholland.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The codec supports only power-of-two BCLK/LRCK divisors. If either the slot width or the number of slots is not a power of two, the LRCK divisor must be rounded up to provide enough space. To do that, use order_base_2 (instead of ilog2, which rounds down). Since the rounded divisor is also needed for setting the SYSCLK/BCLK divisor, return the order base 2 instead of fully calculating the hardware register encoding. Signed-off-by: Samuel Holland --- sound/soc/sunxi/sun8i-codec.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/sound/soc/sunxi/sun8i-codec.c b/sound/soc/sunxi/sun8i-codec.c index e7f01a4b4001..779853d023fe 100644 --- a/sound/soc/sunxi/sun8i-codec.c +++ b/sound/soc/sunxi/sun8i-codec.c @@ -300,33 +300,35 @@ static u8 sun8i_codec_get_bclk_div(struct sun8i_codec *scodec, best_diff = diff; best_val = bdiv->val; } } return best_val; } -static int sun8i_codec_get_lrck_div(unsigned int channels, - unsigned int word_size) +static int sun8i_codec_get_lrck_div_order(unsigned int slots, + unsigned int slot_width) { - unsigned int div = word_size * channels; + unsigned int div = slots * slot_width; if (div < 16 || div > 256) return -EINVAL; - return ilog2(div) - 4; + return order_base_2(div); } static int sun8i_codec_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct sun8i_codec *scodec = snd_soc_dai_get_drvdata(dai); - int lrck_div, sample_rate, word_size; + unsigned int slots = params_channels(params); + unsigned int slot_width = params_width(params); + int lrck_div_order, sample_rate, word_size; u8 bclk_div; /* word size */ switch (params_width(params)) { case 8: word_size = 0x0; break; case 16: @@ -346,24 +348,24 @@ static int sun8i_codec_hw_params(struct snd_pcm_substream *substream, SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ_MASK, word_size << SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ); bclk_div = sun8i_codec_get_bclk_div(scodec, params_rate(params), 16); regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL, SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV_MASK, bclk_div << SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV); - lrck_div = sun8i_codec_get_lrck_div(params_channels(params), - params_physical_width(params)); - if (lrck_div < 0) - return lrck_div; + /* LRCK divider (BCLK/LRCK ratio) */ + lrck_div_order = sun8i_codec_get_lrck_div_order(slots, slot_width); + if (lrck_div_order < 0) + return lrck_div_order; regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL, SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV_MASK, - lrck_div << SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV); + (lrck_div_order - 4) << SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV); sample_rate = sun8i_codec_get_hw_rate(params); if (sample_rate < 0) return sample_rate; regmap_update_bits(scodec->regmap, SUN8I_SYS_SR_CTRL, SUN8I_SYS_SR_CTRL_AIF1_FS_MASK, sample_rate << SUN8I_SYS_SR_CTRL_AIF1_FS); -- 2.26.2