From patchwork Tue Jul 2 14:55:47 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luciano Coelho X-Patchwork-Id: 2813061 Return-Path: X-Original-To: patchwork-linux-omap@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 B800E9F755 for ; Tue, 2 Jul 2013 14:57:22 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7808820137 for ; Tue, 2 Jul 2013 14:57:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4750D20134 for ; Tue, 2 Jul 2013 14:57:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753541Ab3GBO44 (ORCPT ); Tue, 2 Jul 2013 10:56:56 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:42680 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753227Ab3GBO4x (ORCPT ); Tue, 2 Jul 2013 10:56:53 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id r62EuM74021722; Tue, 2 Jul 2013 09:56:22 -0500 Received: from DLEE70.ent.ti.com (dlee70.ent.ti.com [157.170.170.113]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id r62EuMJq013088; Tue, 2 Jul 2013 09:56:22 -0500 Received: from dlelxv22.itg.ti.com (172.17.1.197) by DLEE70.ent.ti.com (157.170.170.113) with Microsoft SMTP Server id 14.2.342.3; Tue, 2 Jul 2013 09:56:22 -0500 Received: from cumari.coelho.fi (h79-5.vpn.ti.com [172.24.79.5]) by dlelxv22.itg.ti.com (8.13.8/8.13.8) with ESMTP id r62EtoMY016894; Tue, 2 Jul 2013 09:56:19 -0500 From: Luciano Coelho To: , , CC: , , , , , , , , , , Subject: [PATCH v2 8/9] wlcore: sdio: get clocks from device tree Date: Tue, 2 Jul 2013 17:55:47 +0300 Message-ID: <1372776948-24840-9-git-send-email-coelho@ti.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1372776948-24840-1-git-send-email-coelho@ti.com> References: <1372776948-24840-1-git-send-email-coelho@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 Read the clock nodes from the device tree and use them to set the frequency for the refclock and the tcxo clock. Signed-off-by: Luciano Coelho Reviewed-by: Felipe Balbi --- drivers/net/wireless/ti/wlcore/sdio.c | 36 +++++++++++++++++++++++++++++++-- 1 file changed, 34 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ti/wlcore/sdio.c b/drivers/net/wireless/ti/wlcore/sdio.c index 980bf3d..60fce49 100644 --- a/drivers/net/wireless/ti/wlcore/sdio.c +++ b/drivers/net/wireless/ti/wlcore/sdio.c @@ -53,6 +53,7 @@ static bool dump = false; struct wl12xx_sdio_glue { struct device *dev; struct platform_device *core; + struct clk *refclock, *tcxoclock; }; static const struct sdio_device_id wl1271_devices[] = { @@ -224,6 +225,7 @@ 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; struct device_node *clock_node; + struct wl12xx_sdio_glue *glue = sdio_get_drvdata(dev_to_sdio_func(dev)); if (!np) { np = of_find_matching_node(NULL, dev->driver->of_match_table); @@ -250,6 +252,26 @@ static struct wl12xx_platform_data *wlcore_get_pdata_from_of(struct device *dev) for_each_matching_node(clock_node, wlcore_sdio_of_clk_match_table) of_fixed_clk_setup(clock_node); + /* TODO: make sure we have this when needed (ie. for WL6 and WL7) */ + glue->refclock = of_clk_get_by_name(np, "refclock"); + if (IS_ERR(glue->refclock)) { + dev_err(dev, "couldn't find refclock on the device tree\n"); + glue->refclock = NULL; + } else { + clk_prepare_enable(glue->refclock); + pdata->ref_clock_freq = clk_get_rate(glue->refclock); + } + + /* TODO: make sure we have this when needed (ie. for WL7) */ + glue->tcxoclock = of_clk_get_by_name(np, "tcxoclock"); + if (IS_ERR(glue->tcxoclock)) { + dev_err(dev, "couldn't find tcxoclock on the device tree\n"); + glue->tcxoclock = NULL; + } else { + clk_prepare_enable(glue->tcxoclock); + pdata->ref_clock_freq = clk_get_rate(glue->tcxoclock); + } + goto out; out_free: @@ -294,6 +316,8 @@ 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; + sdio_set_drvdata(func, glue); + /* 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. @@ -319,8 +343,6 @@ static int wl1271_probe(struct sdio_func *func, if (mmcflags & MMC_PM_KEEP_POWER) pdev_data->pwr_in_suspend = true; - sdio_set_drvdata(func, glue); - /* Tell PM core that we don't need the card to be powered now */ pm_runtime_put_noidle(&func->dev); @@ -387,6 +409,16 @@ static void wl1271_remove(struct sdio_func *func) { struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func); + if (glue->refclock) { + clk_disable_unprepare(glue->refclock); + clk_put(glue->refclock); + } + + if (glue->tcxoclock) { + clk_disable_unprepare(glue->tcxoclock); + clk_put(glue->tcxoclock); + } + /* Undo decrement done above in wl1271_probe */ pm_runtime_get_noresume(&func->dev);