From patchwork Tue Oct 27 18:31:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?Q2zDqW1lbnQgUMOpcm9u?= X-Patchwork-Id: 310839 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=-12.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 6C37AC4363A for ; Tue, 27 Oct 2020 18:32:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 23CDD2224E for ; Tue, 27 Oct 2020 18:32:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="DNkj+Piz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1828413AbgJ0Sb7 (ORCPT ); Tue, 27 Oct 2020 14:31:59 -0400 Received: from mail-wm1-f65.google.com ([209.85.128.65]:55360 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1828382AbgJ0Sb6 (ORCPT ); Tue, 27 Oct 2020 14:31:58 -0400 Received: by mail-wm1-f65.google.com with SMTP id a72so2311613wme.5; Tue, 27 Oct 2020 11:31:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=MyrgB1AwEElcU6uoJ2FqX5PMdFXQkCgXivSbRL5ep4E=; b=DNkj+Piz0Om+GlBXB1VmhimTuK/nSLowEHG2zWBgg3WSp6WoZYjj8lxB6MeqJxwLLK H9f44Pe3Qgm+GQQb53ymB9f3zFKJxuIWrkGDM12YXn3RLqHzTDPoD363A3fULoK5xPRt U39PLKCsU4BCqQkKxYnUdUjbAzodsCkdfyMr0FSpdMDZDzZ4UOFkK7+Hqx15+bf4lNg9 2Ts8vi/G/ktxoS+PxSPNw3hFotL7a69jPTSjbh4Cb6zLT/RS1R46aouo4C8scKpaC2jT +fvo5BhsI7euEErtYqaYf0Ph0bCwizCeGr8VRlnrSvcnTQZxcOjN5r9LJxW3Qwjr8VBH +f4w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=MyrgB1AwEElcU6uoJ2FqX5PMdFXQkCgXivSbRL5ep4E=; b=JQU6cbUvLqfNO5RmA/mF4sgiRrkmWPWTRnfJOusnKwqbxUrz1xxxODWeaGaqRB3wxu XKBe612xV3Df3oS8I7PJM/G2L+I1IVi98EwmpJjM9yu5adfiMtCRPTB5r4dCcByS/pj4 /DMYsfEQvk0RnhCil6hLKNmkzHM3yEFsQg5UKIhJ9AOOeQAfi55Zz7c4q5BHOWYKtXbs WtN0JNSkho4HWsr34GLLL0HgDLxbkk39UKkfT1JD2I3jqXmYOzDtkhh0ZupzpNpYdYqz HZdky95nFLgFRDBgTj57DpKZx6PP2MgclbSLA8Mn5FyqTCFcct0ceQfzryau8pfV1lct +mcw== X-Gm-Message-State: AOAM531627kHCpoK9vXzzVz3lI8B3IPPgBT3HSlX9d24nFVKm5qtNnhS k5IJVz9qTV5PKkbgUZMCWAg= X-Google-Smtp-Source: ABdhPJyF6ZdXaQzST5/s0N2Dhm9FeBiO3dYoy4glx6HJq/VUSfo5xXU9LEg9PIBhahO1EuL7oBl4GA== X-Received: by 2002:a05:600c:214c:: with SMTP id v12mr3948227wml.23.1603823515538; Tue, 27 Oct 2020 11:31:55 -0700 (PDT) Received: from localhost.localdomain (lputeaux-656-1-11-33.w82-127.abo.wanadoo.fr. [82.127.142.33]) by smtp.gmail.com with ESMTPSA id m9sm2864148wmc.31.2020.10.27.11.31.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Oct 2020 11:31:54 -0700 (PDT) From: =?utf-8?b?Q2zDqW1lbnQgUMOpcm9u?= To: Maxime Ripard , Chen-Yu Tsai , Rob Herring , Mark Brown , Liam Girdwood Cc: Jaroslav Kysela , Takashi Iwai , Marcus Cooper , Jernej Skrabec , alsa-devel@alsa-project.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, =?utf-8?b?Q2zDqW1lbnQgUMOpcm9u?= Subject: [PATCH v9 03/14] ASoC: sun4i-i2s: Change get_sr() and get_wss() to be more explicit Date: Tue, 27 Oct 2020 19:31:38 +0100 Message-Id: <20201027183149.145165-4-peron.clem@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201027183149.145165-1-peron.clem@gmail.com> References: <20201027183149.145165-1-peron.clem@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org We are actually using a complex formula to just return a bunch of simple values. Also this formula is wrong for sun4i when calling get_wss() the function return 4 instead of 3. Replace this with a simpler switch case. Also drop the i2s params which is unused and return a simple int as returning an error code could be out of range for an s8 and there is no optim to return a s8 here. Fixes: 619c15f7fac9 ("ASoC: sun4i-i2s: Change SR and WSS computation") Reviewed-by: Chen-Yu Tsai Acked-by: Maxime Ripard Signed-off-by: Clément Péron --- sound/soc/sunxi/sun4i-i2s.c | 69 +++++++++++++++++++++++-------------- 1 file changed, 44 insertions(+), 25 deletions(-) diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c index 9aa837d4fe99..073ee60da011 100644 --- a/sound/soc/sunxi/sun4i-i2s.c +++ b/sound/soc/sunxi/sun4i-i2s.c @@ -175,8 +175,8 @@ struct sun4i_i2s_quirks { unsigned int num_mclk_dividers; unsigned long (*get_bclk_parent_rate)(const struct sun4i_i2s *); - s8 (*get_sr)(const struct sun4i_i2s *, int); - s8 (*get_wss)(const struct sun4i_i2s *, int); + int (*get_sr)(unsigned int width); + int (*get_wss)(unsigned int width); /* * In the set_chan_cfg() function pointer: @@ -387,37 +387,56 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, return 0; } -static s8 sun4i_i2s_get_sr(const struct sun4i_i2s *i2s, int width) +static int sun4i_i2s_get_sr(unsigned int width) { - if (width < 16 || width > 24) - return -EINVAL; - - if (width % 4) - return -EINVAL; + switch (width) { + case 16: + return 0; + case 20: + return 1; + case 24: + return 2; + } - return (width - 16) / 4; + return -EINVAL; } -static s8 sun4i_i2s_get_wss(const struct sun4i_i2s *i2s, int width) +static int sun4i_i2s_get_wss(unsigned int width) { - if (width < 16 || width > 32) - return -EINVAL; - - if (width % 4) - return -EINVAL; + switch (width) { + case 16: + return 0; + case 20: + return 1; + case 24: + return 2; + case 32: + return 3; + } - return (width - 16) / 4; + return -EINVAL; } -static s8 sun8i_i2s_get_sr_wss(const struct sun4i_i2s *i2s, int width) +static int sun8i_i2s_get_sr_wss(unsigned int width) { - if (width % 4) - return -EINVAL; - - if (width < 8 || width > 32) - return -EINVAL; + switch (width) { + case 8: + return 1; + case 12: + return 2; + case 16: + return 3; + case 20: + return 4; + case 24: + return 5; + case 28: + return 6; + case 32: + return 7; + } - return (width - 8) / 4 + 1; + return -EINVAL; } static int sun4i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s, @@ -582,11 +601,11 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, } i2s->playback_dma_data.addr_width = width; - sr = i2s->variant->get_sr(i2s, word_size); + sr = i2s->variant->get_sr(word_size); if (sr < 0) return -EINVAL; - wss = i2s->variant->get_wss(i2s, slot_width); + wss = i2s->variant->get_wss(slot_width); if (wss < 0) return -EINVAL;