From patchwork Mon Mar 12 15:57:50 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Code Kipper X-Patchwork-Id: 10276657 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 91D3B602BD for ; Mon, 12 Mar 2018 15:58:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7EC1428AF3 for ; Mon, 12 Mar 2018 15:58:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7360028B14; Mon, 12 Mar 2018 15:58:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.8 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_NONE, T_DKIM_INVALID autolearn=no version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B6F7528AF3 for ; Mon, 12 Mar 2018 15:58:33 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 2317A267429; Mon, 12 Mar 2018 16:58:07 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 01949266E63; Mon, 12 Mar 2018 16:58:02 +0100 (CET) Received: from mail-lf0-f68.google.com (mail-lf0-f68.google.com [209.85.215.68]) by alsa0.perex.cz (Postfix) with ESMTP id 2A0DA266E63 for ; Mon, 12 Mar 2018 16:58:00 +0100 (CET) Received: by mail-lf0-f68.google.com with SMTP id h127-v6so24017082lfg.12 for ; Mon, 12 Mar 2018 08:58:00 -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; bh=RkiRYX701V+CCHidjd31VMyDJk4zgcdPWojw8elb/0E=; b=A9MAib1KaJWXukn7clV8vLm/Y/clR3veA4HERmW7a2jHcYbH+iJGeu6F2uBQzBajOl U0FvfjlQDgCG11Zk1pT3AHdFN+xHQQ1/+5hA33D2EgwQov2RXUsH5kxGM6pPTyE35u0u 1YZsBWO6i9ceEzDObEhtAv3vhpmEBKvRTQ0nxSgN6wg8EPuS584ePvEPOkXbXIJfebYx A9TYsYPwP5b+sE2tkV7MKqLiDfpOlWIcoBC8jAMY3x0jbc+q87QBxOWeJ/SvbxLRNiEq FMX94/+mD4WFR+L1jLECQ3jAsGwwGfBwbyMDwcuHivPlcMlSXigLzI4rYULXFVnBfzsv ogeg== 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; bh=RkiRYX701V+CCHidjd31VMyDJk4zgcdPWojw8elb/0E=; b=r+FMbEuu4h713CK8kKh0mspSrbKPJh1zWkb07u4XCK51e/GBnFkXEUY7z6shHSsu5N sGibf58uRaMps7yCglbzpKzGoPMGwsxSVXL+pA/atB7OK3Wt/fE9jMIPtcRru6CBSAg1 w74pWL+/ImeMOU6kMiqu/506DQSsvgyARVaJ8ZorJL6y+9GCYMOfrD38Pn5AJ1hISYkn yi3Q3iPwzaOgu6FVTJfAxDt+L4qd6/ckus2hW55ou93/GO4LvRPgtX5YhsQkhZ/GBJOv oyDe3clFoikVWAdpL2A+ohQx0O6KutyLlQ3QFWGw1wxcEl6KerwrShYQwSOUqjPa8g30 Bw3Q== X-Gm-Message-State: AElRT7HbTAYd9N1r+WsMllroF8YtMEWHrFbvKDWpYUk7HeBwwfQCmpfw c91j+CSgLgC6F53oviXsXdM= X-Google-Smtp-Source: AG47ELvhMeQ7OZuPwZ3r8xhXVwc39ETg4JpeTdZLtF6aDvleuTc2vP1YcwefKfkMTsHddgyH8zNU2w== X-Received: by 2002:a19:258b:: with SMTP id l133-v6mr5636868lfl.70.1520870280446; Mon, 12 Mar 2018 08:58:00 -0700 (PDT) Received: from localhost.localdomain (c83-253-254-90.bredband.comhem.se. [83.253.254.90]) by smtp.gmail.com with ESMTPSA id h11-v6sm1833448lfd.88.2018.03.12.08.57.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 12 Mar 2018 08:57:59 -0700 (PDT) From: codekipper@gmail.com To: maxime.ripard@free-electrons.com, wens@csie.org, linux-sunxi@googlegroups.com Date: Mon, 12 Mar 2018 16:57:50 +0100 Message-Id: <20180312155753.9478-4-codekipper@gmail.com> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180312155753.9478-1-codekipper@gmail.com> References: <20180312155753.9478-1-codekipper@gmail.com> Cc: alsa-devel@alsa-project.org, Marcus Cooper , lgirdwood@gmail.com, linux-kernel@vger.kernel.org, be17068@iperbole.bo.it, broonie@kernel.org, linux-arm-kernel@lists.infradead.org Subject: [alsa-devel] [PATCH v2 3/6] ASoC: sun4i-i2s: Correct divider calculations X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP From: Marcus Cooper The clock division circuitry is different on the H3 and later SoCs. The division of bclk is now based on pll2. Signed-off-by: Marcus Cooper --- sound/soc/sunxi/sun4i-i2s.c | 76 +++++++++++++++++++++++++++++++-------------- 1 file changed, 52 insertions(+), 24 deletions(-) diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c index 396b11346361..2bd0befa02a8 100644 --- a/sound/soc/sunxi/sun4i-i2s.c +++ b/sound/soc/sunxi/sun4i-i2s.c @@ -129,10 +129,10 @@ * @has_chsel_offset: SoC uses offset for selecting dai operational mode. * @reg_offset_txdata: offset of the tx fifo. * @sun4i_i2s_regmap: regmap config to use. - * @mclk_offset: Value by which mclkdiv needs to be adjusted. - * @bclk_offset: Value by which bclkdiv needs to be adjusted. * @fmt_offset: Value by which wss and sr needs to be adjusted. * @field_clkdiv_mclk_en: regmap field to enable mclk output. + * @field_clkdiv_mclk: regmap field for mclkdiv. + * @field_clkdiv_bclk: regmap field for bclkdiv. * @field_fmt_wss: regmap field to set word select size. * @field_fmt_sr: regmap field to set sample resolution. * @field_fmt_bclk: regmap field to set clk polarity. @@ -153,8 +153,6 @@ struct sun4i_i2s_quirks { bool has_chsel_offset; unsigned int reg_offset_txdata; /* TX FIFO */ const struct regmap_config *sun4i_i2s_regmap; - unsigned int mclk_offset; - unsigned int bclk_offset; unsigned int fmt_offset; /* Register fields for i2s */ @@ -212,7 +210,25 @@ static const struct sun4i_i2s_clk_div sun4i_i2s_bclk_div[] = { { .div = 8, .val = 3 }, { .div = 12, .val = 4 }, { .div = 16, .val = 5 }, - /* TODO - extend divide ratio supported by newer SoCs */ +}; + +static const struct sun4i_i2s_clk_div sun8i_i2s_clk_div[] = { + { .div = 0, .val = 0 }, + { .div = 1, .val = 1 }, + { .div = 2, .val = 2 }, + { .div = 4, .val = 3 }, + { .div = 6, .val = 4 }, + { .div = 8, .val = 5 }, + { .div = 12, .val = 6 }, + { .div = 16, .val = 7 }, + { .div = 24, .val = 8 }, + { .div = 32, .val = 9 }, + { .div = 48, .val = 10 }, + { .div = 64, .val = 11 }, + { .div = 96, .val = 12 }, + { .div = 128, .val = 13 }, + { .div = 176, .val = 14 }, + { .div = 192, .val = 15 }, }; static const struct sun4i_i2s_clk_div sun4i_i2s_mclk_div[] = { @@ -224,21 +240,21 @@ static const struct sun4i_i2s_clk_div sun4i_i2s_mclk_div[] = { { .div = 12, .val = 5 }, { .div = 16, .val = 6 }, { .div = 24, .val = 7 }, - /* TODO - extend divide ratio supported by newer SoCs */ }; static int sun4i_i2s_get_bclk_div(struct sun4i_i2s *i2s, unsigned int oversample_rate, - unsigned int word_size) + unsigned int word_size, + const struct sun4i_i2s_clk_div *bdiv, + unsigned int size) { int div = oversample_rate / word_size / 2; int i; - for (i = 0; i < ARRAY_SIZE(sun4i_i2s_bclk_div); i++) { - const struct sun4i_i2s_clk_div *bdiv = &sun4i_i2s_bclk_div[i]; - + for (i = 0; i < size; i++) { if (bdiv->div == div) return bdiv->val; + bdiv++; } return -EINVAL; @@ -247,16 +263,17 @@ static int sun4i_i2s_get_bclk_div(struct sun4i_i2s *i2s, static int sun4i_i2s_get_mclk_div(struct sun4i_i2s *i2s, unsigned int oversample_rate, unsigned int module_rate, - unsigned int sampling_rate) + unsigned int sampling_rate, + const struct sun4i_i2s_clk_div *mdiv, + unsigned int size) { int div = module_rate / sampling_rate / oversample_rate; int i; - for (i = 0; i < ARRAY_SIZE(sun4i_i2s_mclk_div); i++) { - const struct sun4i_i2s_clk_div *mdiv = &sun4i_i2s_mclk_div[i]; - + for (i = 0; i < size; i++) { if (mdiv->div == div) return mdiv->val; + mdiv++; } return -EINVAL; @@ -321,24 +338,37 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, return -EINVAL; } - bclk_div = sun4i_i2s_get_bclk_div(i2s, oversample_rate, - word_size); + if (i2s->variant->has_fmt_set_lrck_period) + bclk_div = sun4i_i2s_get_bclk_div(i2s, clk_rate / rate, + word_size, + sun8i_i2s_clk_div, + ARRAY_SIZE(sun8i_i2s_clk_div)); + else + bclk_div = sun4i_i2s_get_bclk_div(i2s, oversample_rate, + word_size, + sun4i_i2s_bclk_div, + ARRAY_SIZE(sun4i_i2s_bclk_div)); if (bclk_div < 0) { dev_err(dai->dev, "Unsupported BCLK divider: %d\n", bclk_div); return -EINVAL; } - mclk_div = sun4i_i2s_get_mclk_div(i2s, oversample_rate, - clk_rate, rate); + + if (i2s->variant->has_fmt_set_lrck_period) + mclk_div = sun4i_i2s_get_mclk_div(i2s, oversample_rate, + clk_rate, rate, + sun8i_i2s_clk_div, + ARRAY_SIZE(sun8i_i2s_clk_div)); + else + mclk_div = sun4i_i2s_get_mclk_div(i2s, oversample_rate, + clk_rate, rate, + sun4i_i2s_mclk_div, + ARRAY_SIZE(sun4i_i2s_mclk_div)); if (mclk_div < 0) { dev_err(dai->dev, "Unsupported MCLK divider: %d\n", mclk_div); return -EINVAL; } - /* Adjust the clock division values if needed */ - bclk_div += i2s->variant->bclk_offset; - mclk_div += i2s->variant->mclk_offset; - regmap_write(i2s->regmap, SUN4I_I2S_CLK_DIV_REG, SUN4I_I2S_CLK_DIV_BCLK(bclk_div) | SUN4I_I2S_CLK_DIV_MCLK(mclk_div)); @@ -953,8 +983,6 @@ static const struct sun4i_i2s_quirks sun8i_h3_i2s_quirks = { .has_reset = true, .reg_offset_txdata = SUN8I_I2S_FIFO_TX_REG, .sun4i_i2s_regmap = &sun8i_i2s_regmap_config, - .mclk_offset = 1, - .bclk_offset = 2, .fmt_offset = 3, .has_fmt_set_lrck_period = true, .has_chcfg = true,