From patchwork Fri Dec 20 13:11:30 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Pargmann X-Patchwork-Id: 3388391 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id AE207C0D4A for ; Fri, 20 Dec 2013 13:14:15 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 116EB206F3 for ; Fri, 20 Dec 2013 13:14:11 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B6E25206F2 for ; Fri, 20 Dec 2013 13:14:09 +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 1VtztF-0008Q8-NC; Fri, 20 Dec 2013 13:13:18 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Vtzt2-0002At-Ep; Fri, 20 Dec 2013 13:13:04 +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 1Vtzsb-00026Y-Ff for linux-arm-kernel@lists.infradead.org; Fri, 20 Dec 2013 13:12:39 +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 1Vtzrw-0006XC-G4; Fri, 20 Dec 2013 14:11:56 +0100 Received: from mpa by dude.hi.pengutronix.de with local (Exim 4.82) (envelope-from ) id 1Vtzrs-0004ed-SH; Fri, 20 Dec 2013 14:11:52 +0100 From: Markus Pargmann To: Mark Brown , Liam Girdwood , Timur Tabi Subject: [PATCH v4 3/9] ASoC: fsl-ssi: Add imx51-ssi and of_device_id matching Date: Fri, 20 Dec 2013 14:11:30 +0100 Message-Id: <1387545096-2334-4-git-send-email-mpa@pengutronix.de> X-Mailer: git-send-email 1.8.5.1 In-Reply-To: <1387545096-2334-1-git-send-email-mpa@pengutronix.de> References: <1387545096-2334-1-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-20131220_081237_998953_8211328C X-CRM114-Status: GOOD ( 18.62 ) X-Spam-Score: -2.4 (--) Cc: alsa-devel@alsa-project.org, Nicolin Chen , kernel@pengutronix.de, Markus Pargmann , Shawn Guo , Fabio Estevam , linux-arm-kernel@lists.infradead.org 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=-4.7 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 There is a small but significant difference between imx21-ssi and imx51-ssi and above. imx21-ssi does not allow online reconfiguration of some registers. They have to be configured at the beginning. imx51-ssi has to reconfigure the SSI unit while it is running. Otherwise it would not be possible to have two streams in parallel. The new SDMA unit in imx51 and above has to be configured before the first DMA request arrives. Therefor we need to setup TDMAE/RDMAE just before starting the stream. This patch introduces distinct imx51-ssi as compatible and adds of_device_id matching in the probe function. Signed-off-by: Markus Pargmann --- sound/soc/fsl/fsl_ssi.c | 32 ++++++++++++++++++++++++-------- 1 file changed, 24 insertions(+), 8 deletions(-) diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 702c63d..39ad516 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -123,6 +123,13 @@ static inline void write_ssi_mask(u32 __iomem *addr, u32 clear, u32 set) CCSR_SSI_SIER_TUE0_EN | CCSR_SSI_SIER_TFRC_EN) #define FSLSSI_SISR_MASK (FSLSSI_SIER_DBG_RX_FLAGS | FSLSSI_SIER_DBG_TX_FLAGS) + +enum fsl_ssi_type { + FSL_SSI_MCP8610, + FSL_SSI_MX21, + FSL_SSI_MX51, +}; + /** * fsl_ssi_private: per-SSI private data * @@ -189,6 +196,14 @@ struct fsl_ssi_private { char name[1]; }; +static const struct of_device_id fsl_ssi_ids[] = { + { .compatible = "fsl,mpc8610-ssi", .data = (void *) FSL_SSI_MCP8610}, + { .compatible = "fsl,imx51-ssi", .data = (void *) FSL_SSI_MX51}, + { .compatible = "fsl,imx21-ssi", .data = (void *) FSL_SSI_MX21}, + {} +}; +MODULE_DEVICE_TABLE(of, fsl_ssi_ids); + /** * fsl_ssi_isr: SSI interrupt handler * @@ -1118,6 +1133,8 @@ static int fsl_ssi_probe(struct platform_device *pdev) int ret = 0; struct device_attribute *dev_attr = NULL; struct device_node *np = pdev->dev.of_node; + const struct of_device_id *of_id; + enum fsl_ssi_type hw_type; const char *p, *sprop; const uint32_t *iprop; struct resource res; @@ -1132,6 +1149,11 @@ static int fsl_ssi_probe(struct platform_device *pdev) if (!of_device_is_available(np)) return -ENODEV; + of_id = of_match_device(fsl_ssi_ids, &pdev->dev); + if (!of_id) + return -EINVAL; + hw_type = (enum fsl_ssi_type) of_id->data; + /* We only support the SSI in "I2S Slave" mode */ sprop = of_get_property(np, "fsl,mode", NULL); if (!sprop) { @@ -1211,7 +1233,8 @@ static int fsl_ssi_probe(struct platform_device *pdev) ssi_private->baudclk_locked = false; spin_lock_init(&ssi_private->baudclk_lock); - if (of_device_is_compatible(pdev->dev.of_node, "fsl,imx21-ssi")) { + if (hw_type == FSL_SSI_MX21 || hw_type == FSL_SSI_MX51 || + hw_type == FSL_SSI_MX35) { u32 dma_events[2]; ssi_private->ssi_on_imx = true; @@ -1413,13 +1436,6 @@ static int fsl_ssi_remove(struct platform_device *pdev) return 0; } -static const struct of_device_id fsl_ssi_ids[] = { - { .compatible = "fsl,mpc8610-ssi", }, - { .compatible = "fsl,imx21-ssi", }, - {} -}; -MODULE_DEVICE_TABLE(of, fsl_ssi_ids); - static struct platform_driver fsl_ssi_driver = { .driver = { .name = "fsl-ssi-dai",