Return-path: Received: from hauke-m.de ([5.39.93.123]:33023 "EHLO hauke-m.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755133AbaITNCP (ORCPT ); Sat, 20 Sep 2014 09:02:15 -0400 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 v3 2/2] bcma: get IRQ numbers from dt Date: Sat, 20 Sep 2014 15:02:05 +0200 Message-Id: <1411218125-32670-2-git-send-email-hauke@hauke-m.de> (sfid-20140920_150222_575492_0C1AE97C) In-Reply-To: <1411218125-32670-1-git-send-email-hauke@hauke-m.de> References: <1411218125-32670-1-git-send-email-hauke@hauke-m.de> Sender: linux-wireless-owner@vger.kernel.org List-ID: 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: v2: - use of_translate_address() to support ranges RFC: - add #ifdef CONFIG_OF diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c index 19ef685..5e7a3d4 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 (of_translate_address(node, 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; -- 1.9.1