From patchwork Tue Sep 16 21:56:22 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hauke Mehrtens X-Patchwork-Id: 4920901 Return-Path: X-Original-To: patchwork-linux-wireless@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 28C0B9F3ED for ; Tue, 16 Sep 2014 21:54:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 4A312201B4 for ; Tue, 16 Sep 2014 21:56:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5CD932017D for ; Tue, 16 Sep 2014 21:56:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754061AbaIPV4e (ORCPT ); Tue, 16 Sep 2014 17:56:34 -0400 Received: from hauke-m.de ([5.39.93.123]:57354 "EHLO hauke-m.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753944AbaIPV4d (ORCPT ); Tue, 16 Sep 2014 17:56:33 -0400 Received: from hauke-desktop.lan (spit-414.wohnheim.uni-bremen.de [134.102.133.158]) by hauke-m.de (Postfix) with ESMTPSA id 6B66F2063B; Tue, 16 Sep 2014 23:56:31 +0200 (CEST) From: Hauke Mehrtens To: linville@tuxdriver.com, linux-wireless@vger.kernel.org Cc: zajec5@gmail.com, arend@broadcom.com, linux-arm-kernel@lists.infradead.org, arnd@arndb.de, devicetree@vger.kernel.org, Hauke Mehrtens Subject: [PATCH v2 2/2] bcma: get IRQ numbers from dt Date: Tue, 16 Sep 2014 23:56:22 +0200 Message-Id: <1410904582-6519-2-git-send-email-hauke@hauke-m.de> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1410904582-6519-1-git-send-email-hauke@hauke-m.de> References: <1410904582-6519-1-git-send-email-hauke@hauke-m.de> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-7.6 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 It is not possible to auto detect the irq numbers used by the cores on an arm SoC. If bcma was registered with device tree it will search for some device tree nodes with the irq number and add it to the core configuration. Signed-off-by: Hauke Mehrtens --- drivers/bcma/main.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 48 insertions(+), 1 deletion(-) This is based on wireless-testing and should go into that tree. changes since: RFC: - add #ifdef CONFIG_OF diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c index e5d578c..b8731ee 100644 --- a/drivers/bcma/main.c +++ b/drivers/bcma/main.c @@ -10,6 +10,8 @@ #include #include #include +#include +#include MODULE_DESCRIPTION("Broadcom's specific AMBA driver"); MODULE_LICENSE("GPL"); @@ -131,6 +133,45 @@ static bool bcma_is_core_needed_early(u16 core_id) return false; } +#ifdef CONFIG_OF +static struct device_node *bcma_of_find_child_device(struct platform_device *parent, + struct bcma_device *core) +{ + struct device_node *node; + u64 size; + const __be32 *reg; + + if (!parent || !parent->dev.of_node) + return NULL; + + for_each_child_of_node(parent->dev.of_node, node) { + reg = of_get_address(node, 0, &size, NULL); + if (!reg) + continue; + if (be32_to_cpup(reg) == core->addr) + return node; + } + return NULL; +} + +static void bcma_of_fill_device(struct platform_device *parent, + struct bcma_device *core) +{ + struct device_node *node; + + node = bcma_of_find_child_device(parent, core); + if (!node) + return; + core->dev.of_node = node; + core->irq = irq_of_parse_and_map(node, 0); +} +#else +static void bcma_of_fill_device(struct platform_device *parent, + struct bcma_device *core) +{ +} +#endif /* CONFIG_OF */ + static void bcma_register_core(struct bcma_bus *bus, struct bcma_device *core) { int err; @@ -147,7 +188,13 @@ static void bcma_register_core(struct bcma_bus *bus, struct bcma_device *core) break; case BCMA_HOSTTYPE_SOC: core->dev.dma_mask = &core->dev.coherent_dma_mask; - core->dma_dev = &core->dev; + if (bus->host_pdev) { + core->dma_dev = &bus->host_pdev->dev; + core->dev.parent = &bus->host_pdev->dev; + bcma_of_fill_device(bus->host_pdev, core); + } else { + core->dma_dev = &core->dev; + } break; case BCMA_HOSTTYPE_SDIO: break;