From patchwork Fri Apr 29 13:06:18 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 8981961 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B9EDC9F54E for ; Fri, 29 Apr 2016 13:08:03 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D4BE7200D9 for ; Fri, 29 Apr 2016 13:08:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D66CB201DD for ; Fri, 29 Apr 2016 13:08:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753725AbcD2NHN (ORCPT ); Fri, 29 Apr 2016 09:07:13 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:40880 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753763AbcD2NHJ (ORCPT ); Fri, 29 Apr 2016 09:07:09 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id u3TD76tm017420; Fri, 29 Apr 2016 08:07:06 -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 u3TD76Ff032601; Fri, 29 Apr 2016 08:07:06 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DLEE70.ent.ti.com (157.170.170.113) with Microsoft SMTP Server id 14.3.224.2; Fri, 29 Apr 2016 08:07:06 -0500 Received: from localhost.localdomain (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id u3TD6xWe014301; Fri, 29 Apr 2016 08:07:01 -0500 From: Peter Ujfalusi To: , CC: , , , , Subject: [PATCH] mmc: omap_hsmmc: Use dma_request_chan() for requesting DMA channel Date: Fri, 29 Apr 2016 16:06:18 +0300 Message-ID: <1461935178-28617-1-git-send-email-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.8.1 MIME-Version: 1.0 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Spam-Status: No, score=-7.9 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 With the new dma_request_chan() the client driver does not need to look for the DMA resource and it does not need to pass filter_fn anymore. By switching to the new API the driver can now support deferred probing against DMA. Signed-off-by: Peter Ujfalusi --- drivers/mmc/host/omap_hsmmc.c | 50 +++++++++---------------------------------- 1 file changed, 10 insertions(+), 40 deletions(-) diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index e9d75c6dd516..06a167292820 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -32,7 +32,6 @@ #include #include #include -#include #include #include #include @@ -1989,8 +1988,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev) struct resource *res; int ret, irq; const struct of_device_id *match; - dma_cap_mask_t mask; - unsigned tx_req, rx_req; const struct omap_mmc_of_data *data; void __iomem *base; @@ -2120,44 +2117,17 @@ static int omap_hsmmc_probe(struct platform_device *pdev) omap_hsmmc_conf_bus_power(host); - if (!pdev->dev.of_node) { - res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx"); - if (!res) { - dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n"); - ret = -ENXIO; - goto err_irq; - } - tx_req = res->start; - - res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx"); - if (!res) { - dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n"); - ret = -ENXIO; - goto err_irq; - } - rx_req = res->start; - } - - dma_cap_zero(mask); - dma_cap_set(DMA_SLAVE, mask); - - host->rx_chan = - dma_request_slave_channel_compat(mask, omap_dma_filter_fn, - &rx_req, &pdev->dev, "rx"); - - if (!host->rx_chan) { - dev_err(mmc_dev(host->mmc), "unable to obtain RX DMA engine channel\n"); - ret = -ENXIO; + host->rx_chan = dma_request_chan(&pdev->dev, "rx"); + if (IS_ERR(host->rx_chan)) { + dev_err(mmc_dev(host->mmc), "RX DMA channel request failed\n"); + ret = PTR_ERR(host->rx_chan); goto err_irq; } - host->tx_chan = - dma_request_slave_channel_compat(mask, omap_dma_filter_fn, - &tx_req, &pdev->dev, "tx"); - - if (!host->tx_chan) { - dev_err(mmc_dev(host->mmc), "unable to obtain TX DMA engine channel\n"); - ret = -ENXIO; + host->tx_chan = dma_request_chan(&pdev->dev, "tx"); + if (IS_ERR(host->tx_chan)) { + dev_err(mmc_dev(host->mmc), "TX DMA channel request failed\n"); + ret = PTR_ERR(host->tx_chan); goto err_irq; } @@ -2215,9 +2185,9 @@ err_slot_name: mmc_remove_host(mmc); err_irq: device_init_wakeup(&pdev->dev, false); - if (host->tx_chan) + if (!IS_ERR_OR_NULL(host->tx_chan)) dma_release_channel(host->tx_chan); - if (host->rx_chan) + if (!IS_ERR_OR_NULL(host->rx_chan)) dma_release_channel(host->rx_chan); pm_runtime_dont_use_autosuspend(host->dev); pm_runtime_put_sync(host->dev);