From patchwork Wed Jul 3 14:03:26 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luciano Coelho X-Patchwork-Id: 2818521 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 CB772BF4A1 for ; Wed, 3 Jul 2013 18:27:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3DD1820182 for ; Wed, 3 Jul 2013 18:27:48 +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 A2C9A2016C for ; Wed, 3 Jul 2013 18:27:46 +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 1UuPsj-0007X4-Oy; Wed, 03 Jul 2013 16:26:18 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UuPqH-0002Gb-Fl; Wed, 03 Jul 2013 16:23:41 +0000 Received: from bombadil.infradead.org ([2001:1868:205::9]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UuPol-0001yr-BL for linux-arm-kernel@merlin.infradead.org; Wed, 03 Jul 2013 16:22:07 +0000 Received: from arroyo.ext.ti.com ([192.94.94.40]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UuNfL-0006Ae-Vx for linux-arm-kernel@lists.infradead.org; Wed, 03 Jul 2013 14:04:16 +0000 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id r63E3sud032049; Wed, 3 Jul 2013 09:03:54 -0500 Received: from DLEE71.ent.ti.com (dlee71.ent.ti.com [157.170.170.114]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id r63E3sFi005190; Wed, 3 Jul 2013 09:03:54 -0500 Received: from dlelxv22.itg.ti.com (172.17.1.197) by DLEE71.ent.ti.com (157.170.170.114) with Microsoft SMTP Server id 14.2.342.3; Wed, 3 Jul 2013 09:03:53 -0500 Received: from cumari.coelho.fi (h79-2.vpn.ti.com [172.24.79.2]) by dlelxv22.itg.ti.com (8.13.8/8.13.8) with ESMTP id r63E3UJi015397; Wed, 3 Jul 2013 09:03:50 -0500 From: Luciano Coelho To: , , Subject: [PATCH v3 5/8] wlcore: add initial device tree support to the sdio module Date: Wed, 3 Jul 2013 17:03:26 +0300 Message-ID: <1372860209-3504-6-git-send-email-coelho@ti.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1372860209-3504-1-git-send-email-coelho@ti.com> References: <1372860209-3504-1-git-send-email-coelho@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130703_070416_133109_46C6E5DF X-CRM114-Status: GOOD ( 16.88 ) X-Spam-Score: -5.0 (-----) Cc: mark.rutland@arm.com, nm@ti.com, coelho@ti.com, mturquette@linaro.org, linux-doc@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, linux-kernel@vger.kernel.org, rob.herring@calxeda.com, balbi@ti.com, grant.likely@linaro.org, linux-omap@vger.kernel.org, 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 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 If platform data is not available, try to get the required information from the device tree. Register an OF match table and parse the appropriate device tree nodes. Parse interrupt property only, for now. Signed-off-by: Luciano Coelho --- drivers/net/wireless/ti/wlcore/sdio.c | 69 ++++++++++++++++++++++++++++++--- 1 file changed, 63 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/ti/wlcore/sdio.c b/drivers/net/wireless/ti/wlcore/sdio.c index 4c7e8ac..9370d7e 100644 --- a/drivers/net/wireless/ti/wlcore/sdio.c +++ b/drivers/net/wireless/ti/wlcore/sdio.c @@ -30,7 +30,7 @@ #include #include #include -#include +#include #include #include #include @@ -214,6 +214,43 @@ static struct wl1271_if_operations sdio_ops = { .set_block_size = wl1271_sdio_set_block_size, }; +static struct wl12xx_platform_data *wlcore_get_pdata_from_of(struct device *dev) +{ + struct wl12xx_platform_data *pdata; + struct device_node *np = dev->of_node; + + if (!np) { + np = of_find_matching_node(NULL, dev->driver->of_match_table); + if (!np) { + dev_notice(dev, "device tree node not available\n"); + pdata = ERR_PTR(-ENODEV); + goto out; + } + } + + pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); + if (!pdata) { + dev_err(dev, "can't allocate platform data\n"); + pdata = ERR_PTR(-ENODEV); + goto out; + } + + pdata->irq = irq_of_parse_and_map(np, 0); + if (pdata->irq < 0) { + dev_err(dev, "can't get interrupt gpio from the device tree\n"); + goto out_free; + } + + goto out; + +out_free: + kfree(pdata); + pdata = ERR_PTR(-ENODEV); + +out: + return pdata; +} + static int wl1271_probe(struct sdio_func *func, const struct sdio_device_id *id) { @@ -248,11 +285,22 @@ static int wl1271_probe(struct sdio_func *func, /* Use block mode for transferring over one block size of data */ func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE; + /* The pdata allocated here is freed when the device is freed, + * so we don't need an additional out label to free it in case + * of error further on. + */ + + /* Try to get legacy platform data from the board file */ pdev_data->pdata = wl12xx_get_platform_data(); if (IS_ERR(pdev_data->pdata)) { - ret = PTR_ERR(pdev_data->pdata); - dev_err(glue->dev, "missing wlan platform data: %d\n", ret); - goto out_free_glue; + dev_info(&func->dev, + "legacy platform data not found, trying device tree\n"); + + pdev_data->pdata = wlcore_get_pdata_from_of(&func->dev); + if (IS_ERR(pdev_data->pdata)) { + dev_err(&func->dev, "can't get platform data\n"); + goto out_free_glue; + } } /* if sdio can keep power while host is suspended, enable wow */ @@ -386,16 +434,25 @@ static const struct dev_pm_ops wl1271_sdio_pm_ops = { }; #endif +static const struct of_device_id wlcore_sdio_of_match_table[] = { + { .compatible = "ti,wilink6" }, + { .compatible = "ti,wilink7" }, + { .compatible = "ti,wilink8" }, + { } +}; +MODULE_DEVICE_TABLE(of, wlcore_sdio_of_match_table); + static struct sdio_driver wl1271_sdio_driver = { .name = "wl1271_sdio", .id_table = wl1271_devices, .probe = wl1271_probe, .remove = wl1271_remove, -#ifdef CONFIG_PM .drv = { +#ifdef CONFIG_PM .pm = &wl1271_sdio_pm_ops, - }, #endif + .of_match_table = of_match_ptr(wlcore_sdio_of_match_table), + }, }; static int __init wl1271_init(void)