From patchwork Sat Jul 27 11:31:52 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Pargmann X-Patchwork-Id: 2834609 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0C9569F243 for ; Sat, 27 Jul 2013 11:36:29 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2321520122 for ; Sat, 27 Jul 2013 11:36:28 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2485220121 for ; Sat, 27 Jul 2013 11:36:27 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1V32mo-00083d-Cu; Sat, 27 Jul 2013 11:35:47 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1V32mP-0003aC-Mc; Sat, 27 Jul 2013 11:35:21 +0000 Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1V32ly-0003Vj-8l for linux-arm-kernel@lists.infradead.org; Sat, 27 Jul 2013 11:34:55 +0000 Received: from dude.hi.pengutronix.de ([2001:6f8:1178:2:21e:67ff:fe11:9c5c]) by metis.ext.pengutronix.de with esmtp (Exim 4.72) (envelope-from ) id 1V32lC-0002PU-9I; Sat, 27 Jul 2013 13:34:06 +0200 Received: from mpa by dude.hi.pengutronix.de with local (Exim 4.80) (envelope-from ) id 1V32l4-0006Af-N0; Sat, 27 Jul 2013 13:33:58 +0200 From: Markus Pargmann To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v10 3/7] ASoC: imx-audmux: Read default configuration from devicetree Date: Sat, 27 Jul 2013 13:31:52 +0200 Message-Id: <1374924716-23475-4-git-send-email-mpa@pengutronix.de> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1374924716-23475-1-git-send-email-mpa@pengutronix.de> References: <1374924716-23475-1-git-send-email-mpa@pengutronix.de> X-SA-Exim-Connect-IP: 2001:6f8:1178:2:21e:67ff:fe11:9c5c X-SA-Exim-Mail-From: mpa@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130727_073454_694430_3E2847E2 X-CRM114-Status: GOOD ( 18.11 ) X-Spam-Score: -3.4 (---) Cc: Fabio Estevam , alsa-devel@alsa-project.org, Lars-Peter Clausen , devicetree-discuss@lists.ozlabs.org, Timur Tabi , Liam Girdwood , Grant Likely , Mark Brown , Sascha Hauer , Markus Pargmann , Shawn Guo X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Adds a function to parse a default port configuration from devicetree. Signed-off-by: Markus Pargmann --- .../devicetree/bindings/sound/imx-audmux.txt | 9 ++++ sound/soc/fsl/imx-audmux.c | 62 ++++++++++++++++++++++ 2 files changed, 71 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/imx-audmux.txt b/Documentation/devicetree/bindings/sound/imx-audmux.txt index 215aa98..f88a00e 100644 --- a/Documentation/devicetree/bindings/sound/imx-audmux.txt +++ b/Documentation/devicetree/bindings/sound/imx-audmux.txt @@ -5,6 +5,15 @@ Required properties: or "fsl,imx31-audmux" for the version firstly used on i.MX31. - reg : Should contain AUDMUX registers location and length +An initial configuration can be setup using child nodes. + +Required properties of optional child nodes: +- fsl,audmux-port : Integer of the audmux port that is configured by this + child node. +- fsl,port-config : List of configuration options for the specific port. For + imx31-audmux and above, it is a list of tuples . For + imx21-audmux it is a list of pcr values. + Example: audmux@021d8000 { diff --git a/sound/soc/fsl/imx-audmux.c b/sound/soc/fsl/imx-audmux.c index 1a5da1e..103d1b0 100644 --- a/sound/soc/fsl/imx-audmux.c +++ b/sound/soc/fsl/imx-audmux.c @@ -251,6 +251,66 @@ int imx_audmux_v2_configure_port(unsigned int port, unsigned int ptcr, } EXPORT_SYMBOL_GPL(imx_audmux_v2_configure_port); +static int imx_audmux_parse_dt_defaults(struct platform_device *pdev, + struct device_node *of_node) +{ + struct device_node *child; + + for_each_available_child_of_node(of_node, child) { + unsigned int port; + unsigned int ptcr = 0; + unsigned int pdcr = 0; + unsigned int pcr = 0; + unsigned int val; + int ret; + int i = 0; + + ret = of_property_read_u32(child, "fsl,audmux-port", &port); + if (ret) { + dev_warn(&pdev->dev, "Failed to get fsl,audmux-port of child node \"%s\"\n", + child->full_name); + continue; + } + if (!of_property_read_bool(child, "fsl,port-config")) { + dev_warn(&pdev->dev, "child node \"%s\" does not have property fsl,port-config\n", + child->full_name); + continue; + } + + for (i = 0; (ret = of_property_read_u32_index(child, + "fsl,port-config\n", i, &val)) == 0; + ++i) { + if (audmux_type == IMX31_AUDMUX) { + if (i % 2) + pdcr |= val; + else + ptcr |= val; + } else { + pcr |= val; + } + } + + if (ret != -ENODATA) { + dev_err(&pdev->dev, "Failed to read u32 at index %d of child %s\n", + i, child->full_name); + continue; + } + + if (audmux_type == IMX31_AUDMUX) { + if (i % 2) { + dev_err(&pdev->dev, "One pdcr value is missing in child node %s\n", + child->full_name); + continue; + } + imx_audmux_v2_configure_port(port, ptcr, pdcr); + } else { + imx_audmux_v1_configure_port(port, pcr); + } + } + + return 0; +} + static int imx_audmux_probe(struct platform_device *pdev) { struct resource *res; @@ -275,6 +335,8 @@ static int imx_audmux_probe(struct platform_device *pdev) if (audmux_type == IMX31_AUDMUX) audmux_debugfs_init(); + imx_audmux_parse_dt_defaults(pdev, pdev->dev.of_node); + return 0; }