From patchwork Fri Aug 11 20:14:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Watts X-Patchwork-Id: 712634 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 5504BC001DE for ; Fri, 11 Aug 2023 20:16:24 +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 B57EB84A; Fri, 11 Aug 2023 22:15:31 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz B57EB84A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1691784981; bh=bp1uhKiN2iX+iNkgzk+NUQQsCKc99cuDK9aP8t52O5A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=txMukbKo89KZrtv7K+CvbgCu/hJzKWdMrZFta0Fg/uuhhUGvxDPdGFd73wiabfxzx 6osqMeDEiH4POKCnnCzFauumBYcj0O+oZ5WSNyMu48kG3UJ8mq9o2Zz+DEzalgGp0d WjT7w++TC+BEieTxVTcQHO/9WtJORoOtYA3O1Wz0= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 1CC2DF80579; Fri, 11 Aug 2023 22:14:40 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 9F6FFF8056F; Fri, 11 Aug 2023 22:14:40 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 334EEF8056F; Fri, 11 Aug 2023 22:14:37 +0200 (CEST) Received: from out-102.mta1.migadu.com (out-102.mta1.migadu.com [IPv6:2001:41d0:203:375::66]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 73672F8016E for ; Fri, 11 Aug 2023 22:14:32 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 73672F8016E Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=jookia.org header.i=@jookia.org header.a=rsa-sha256 header.s=key1 header.b=G3FR1BhY X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jookia.org; s=key1; t=1691784872; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=DhYtgX26LvJBhk6rq6uv3xTzs4w5PTKDtDH5ARnA/4A=; b=G3FR1BhYf+QYeepS8uWwGULIaRbKottmRdYsDjusazmWtWiDg8fF5tcuc4FuZXcRMNF2Mo ieoy9oUrsQeJSeROCAv/695QGWwCOuZAuV7fs5AWXgdfEsc6UgpJpBjuPRS2Hofz0af/VT tmBpbOYnVZpR6BIbJBm8dYGC0gUvtemdTvaRXMkVzbJLGzE4MTaO1SXq/PmfzOvOwrqO9H tXOGIlA2GciINGlf4QK/fJ4JFnwS/FO+t48g2Sg9qwwBMjwkhOkNqm5iTPO+TSAU4Rx84E dVyExjbZ389fkoZxoqmDquJNbI2ASpqJqqKj3A1P+Sy1ou5RNvSxx8guWMrfog== From: John Watts To: alsa-devel@alsa-project.org Cc: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Jaroslav Kysela , Takashi Iwai , John Watts , =?utf-8?q?U?= =?utf-8?q?we_Kleine-K=C3=B6nig?= , Maxime Ripard , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [RFC PATCH 2/7] ASoC: sunxi: sun4i-i2s: Use channel-dins device tree property Date: Sat, 12 Aug 2023 06:14:01 +1000 Message-ID: <20230811201406.4096210-3-contact@jookia.org> In-Reply-To: <20230811201406.4096210-1-contact@jookia.org> References: <20230811201406.4096210-1-contact@jookia.org> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT Message-ID-Hash: HDXFNBBND4IN3XOFUTYSEM7QF7CZLDT5 X-Message-ID-Hash: HDXFNBBND4IN3XOFUTYSEM7QF7CZLDT5 X-MailFrom: contact@jookia.org 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 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: Instead of using DIN pin 0 for all pins, allow changing this using the device tree property. As an example: &i2s2 { channel-dins = /bits/ 8 <0 0 1 1 2 2>; }; This sets channels 0 and 1 to DIN pin 0, channels 1 and 2 to DIN pin 1, and channels 3 and 4 to DIN pin 3 respectively. Signed-off-by: John Watts --- sound/soc/sunxi/sun4i-i2s.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c index d8f999ecaf05..cf66f21646a4 100644 --- a/sound/soc/sunxi/sun4i-i2s.c +++ b/sound/soc/sunxi/sun4i-i2s.c @@ -236,8 +236,33 @@ struct sun4i_i2s_clk_div { static int sun4i_i2s_read_channel_dins(struct device *dev, struct sun4i_i2s *i2s) { + struct device_node *np = dev->of_node; + int max_channels = ARRAY_SIZE(i2s->channel_dins); + int ret; + /* Use DIN pin 0 by default */ memset(i2s->channel_dins, 0, sizeof(i2s->channel_dins)); + + if (!np) + return 0; + + ret = of_property_read_variable_u8_array(np, "channel-dins", + i2s->channel_dins, + 1, max_channels); + + if (ret == -EINVAL) + return 0; + + if (ret < 0) + return ret; + + for (int i = 0; i < ret; ++i) { + u8 din = i2s->channel_dins[i]; + + if (din >= i2s->variant->num_din_pins) + return -EINVAL; + } + return 0; }