From patchwork Wed Jan 24 11:19:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "J, KEERTHY" X-Patchwork-Id: 10182135 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4F6F0602B7 for ; Wed, 24 Jan 2018 11:20:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 230E7288CF for ; Wed, 24 Jan 2018 11:20:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 16809288D3; Wed, 24 Jan 2018 11:20:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 7BBC5288CF for ; Wed, 24 Jan 2018 11:20:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Yz0NSxxtQi+roT7/s9ORyrjpY5O4fPqamJXb/MDNj9s=; b=KU44ao8A45jE9b bBhGKE02mtAkqV2bXsrhneiuEMIkreoxeHPphpVTHPqoCc8K97RSxXLAy8UmZOM7fN85q0a61XJf4 tbu+C+yUhQyztHoTBljnevPmjTqszk5hrCPRrv3QYdpw3izvIzkzfeu1UlvL0Eqz2jDBlcyl22MyU s/k2dje0X3PUEFzkye2O5H7FT/o0RhWG8D1NJHHKlXVjEPzbW5KoMCrXdxYH360k78J2JgHPznrWN MGPVvVyTf/WQ/wUm8RDiPasqGqx6jOge38mGZ3IC3FNNiPUoNklVidHg5TUoN+eA7ECLqiBwQChXy OmaoPXW8VA/rgHnqEABA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1eeJ6j-0008Bx-F0; Wed, 24 Jan 2018 11:20:45 +0000 Received: from lelnx193.ext.ti.com ([198.47.27.77]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1eeJ6f-00088L-Jl for linux-arm-kernel@lists.infradead.org; Wed, 24 Jan 2018 11:20:43 +0000 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by lelnx193.ext.ti.com (8.15.1/8.15.1) with ESMTP id w0OBJbEn012842; Wed, 24 Jan 2018 05:19:37 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com; s=ti-com-17Q1; t=1516792777; bh=5xDAKY9EDZa36OgLVQe3Wpiv0nqI+1xRrsVOfGmrS6w=; h=From:To:CC:Subject:Date; b=oHXayQ1ROca2twMKD236phZ/IxxaGajoVelhiqN+K1x01iSw9W6j4w3gUBGQzLfFk T+QIH9jEvbCNWZqYRVxNC8J2f3yDS0sLwCRLAmQAuAesjMetj+SjgqGoURaNe5Ccs3 h37FRgeviqw5yzQvgVdwF+Fv9jAyqWG2LcKlLFzE= Received: from DFLE104.ent.ti.com (dfle104.ent.ti.com [10.64.6.25]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id w0OBJbAo009756; Wed, 24 Jan 2018 05:19:37 -0600 Received: from DFLE103.ent.ti.com (10.64.6.24) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1261.35; Wed, 24 Jan 2018 05:19:36 -0600 Received: from dflp33.itg.ti.com (10.64.6.16) by DFLE103.ent.ti.com (10.64.6.24) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1261.35 via Frontend Transport; Wed, 24 Jan 2018 05:19:37 -0600 Received: from ula0393675.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id w0OBJWnm018136; Wed, 24 Jan 2018 05:19:32 -0600 From: Keerthy To: , , , Subject: [PATCH v9 8/9] pwm: pwm-omap-dmtimer: Adapt driver to utilize dmtimer pdata ops Date: Wed, 24 Jan 2018 16:49:24 +0530 Message-ID: <1516792764-2203-1-git-send-email-j-keerthy@ti.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-pwm@vger.kernel.org, ladis@linux-mips.org, narmstrong@baylibre.com, j-keerthy@ti.com, linux-kernel@vger.kernel.org, t-kristo@ti.com, robh+dt@kernel.org, sebastian.reichel@collabora.co.uk, grygorii.strashko@ti.com, linux-omap@vger.kernel.org, Claudiu.Beznea@microchip.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Adapt driver to utilize dmtimer pdata ops instead of pdata-quirks. Signed-off-by: Keerthy Acked-by: Neil Armstrong Reviewed-by: Claudiu Beznea --- Changes in v9: * Reorganized the place where of_node_put was called. Changes in v8: * Added of_node_put call in success case of probe. Boot tested on am437x-gp-evm and dra7xx-evm. Also compile tested omap1_defconfig with other patches of v7 posted here: https://www.spinics.net/lists/linux-omap/msg141100.html With v9 version of Patch 8/9. drivers/pwm/pwm-omap-dmtimer.c | 66 ++++++++++++++++++++++++++---------------- 1 file changed, 41 insertions(+), 25 deletions(-) diff --git a/drivers/pwm/pwm-omap-dmtimer.c b/drivers/pwm/pwm-omap-dmtimer.c index 5ad42f3..aaf8d328 100644 --- a/drivers/pwm/pwm-omap-dmtimer.c +++ b/drivers/pwm/pwm-omap-dmtimer.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -37,7 +38,7 @@ struct pwm_omap_dmtimer_chip { struct pwm_chip chip; struct mutex mutex; pwm_omap_dmtimer *dm_timer; - struct pwm_omap_dmtimer_pdata *pdata; + struct omap_dm_timer_ops *pdata; struct platform_device *dm_timer_pdev; }; @@ -242,19 +243,35 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct device_node *timer; + struct platform_device *timer_pdev; struct pwm_omap_dmtimer_chip *omap; - struct pwm_omap_dmtimer_pdata *pdata; + struct dmtimer_platform_data *timer_pdata; + struct omap_dm_timer_ops *pdata; pwm_omap_dmtimer *dm_timer; u32 v; - int status; + int ret = 0; - pdata = dev_get_platdata(&pdev->dev); - if (!pdata) { - dev_err(&pdev->dev, "Missing dmtimer platform data\n"); - return -EINVAL; + timer = of_parse_phandle(np, "ti,timers", 0); + if (!timer) + return -ENODEV; + + timer_pdev = of_find_device_by_node(timer); + if (!timer_pdev) { + dev_err(&pdev->dev, "Unable to find Timer pdev\n"); + ret = -ENODEV; + goto put; } - if (!pdata->request_by_node || + timer_pdata = dev_get_platdata(&timer_pdev->dev); + if (!timer_pdata) { + dev_err(&pdev->dev, "dmtimer pdata structure NULL\n"); + ret = -EINVAL; + goto put; + } + + pdata = timer_pdata->timer_ops; + + if (!pdata || !pdata->request_by_node || !pdata->free || !pdata->enable || !pdata->disable || @@ -267,21 +284,26 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev) !pdata->set_prescaler || !pdata->write_counter) { dev_err(&pdev->dev, "Incomplete dmtimer pdata structure\n"); - return -EINVAL; + ret = -EINVAL; + goto put; } - timer = of_parse_phandle(np, "ti,timers", 0); - if (!timer) - return -ENODEV; - if (!of_get_property(timer, "ti,timer-pwm", NULL)) { dev_err(&pdev->dev, "Missing ti,timer-pwm capability\n"); - return -ENODEV; + ret = -ENODEV; + goto put; } dm_timer = pdata->request_by_node(timer); - if (!dm_timer) - return -EPROBE_DEFER; + if (!dm_timer) { + ret = -EPROBE_DEFER; + goto put; + } + +put: + of_node_put(timer); + if (ret < 0) + return ret; omap = devm_kzalloc(&pdev->dev, sizeof(*omap), GFP_KERNEL); if (!omap) { @@ -291,13 +313,7 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev) omap->pdata = pdata; omap->dm_timer = dm_timer; - - omap->dm_timer_pdev = of_find_device_by_node(timer); - if (!omap->dm_timer_pdev) { - dev_err(&pdev->dev, "Unable to find timer pdev\n"); - omap->pdata->free(dm_timer); - return -EINVAL; - } + omap->dm_timer_pdev = timer_pdev; /* * Ensure that the timer is stopped before we allow PWM core to call @@ -322,8 +338,8 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev) mutex_init(&omap->mutex); - status = pwmchip_add(&omap->chip); - if (status < 0) { + ret = pwmchip_add(&omap->chip); + if (ret < 0) { dev_err(&pdev->dev, "failed to register PWM\n"); omap->pdata->free(omap->dm_timer); return status;