Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756138Ab3CMJsV (ORCPT ); Wed, 13 Mar 2013 05:48:21 -0400 Received: from hqemgate03.nvidia.com ([216.228.121.140]:19520 "EHLO hqemgate03.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754855Ab3CMJsT (ORCPT ); Wed, 13 Mar 2013 05:48:19 -0400 X-PGP-Universal: processed; by hqnvupgp08.nvidia.com on Wed, 13 Mar 2013 02:41:42 -0700 From: Danny Huang To: , , , , , , , , CC: Danny Huang Subject: [PATCH v3] ARM: tegra: expose chip ID and revision Date: Wed, 13 Mar 2013 17:48:00 +0800 Message-ID: <1363168080-12697-1-git-send-email-dahuang@nvidia.com> X-Mailer: git-send-email 1.8.1.5 X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2491 Lines: 90 Expose Tegra chip ID and revision in /sys/devices/soc for user mode usage Signed-off-by: Danny Huang --- arch/arm/Kconfig | 1 + arch/arm/mach-tegra/tegra.c | 31 ++++++++++++++++++++++++++++++- 2 files changed, 31 insertions(+), 1 deletion(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 2363926..12fa4e5 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -675,6 +675,7 @@ config ARCH_TEGRA select HAVE_CLK select HAVE_SMP select MIGHT_HAVE_CACHE_L2X0 + select SOC_BUS select SPARSE_IRQ select USE_OF help diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c index 27232c9..536ed3e 100644 --- a/arch/arm/mach-tegra/tegra.c +++ b/arch/arm/mach-tegra/tegra.c @@ -33,6 +33,8 @@ #include #include #include +#include +#include #include #include @@ -42,6 +44,7 @@ #include "board.h" #include "common.h" +#include "fuse.h" #include "iomap.h" static struct tegra_ehci_platform_data tegra_ehci1_pdata = { @@ -80,12 +83,38 @@ static struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = { static void __init tegra_dt_init(void) { + struct device *parent = NULL; + struct soc_device *soc_dev; + struct soc_device_attribute *soc_dev_attr; + + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + goto out; + + soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%d", tegra_chip_id); + soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d", tegra_revision); + soc_dev_attr->family = kasprintf(GFP_KERNEL, "Tegra"); + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR(soc_dev)) { + kfree(soc_dev_attr->soc_id); + kfree(soc_dev_attr->revision); + kfree(soc_dev_attr->family); + kfree(soc_dev_attr); + goto out; + } + + parent = soc_device_to_device(soc_dev); + if (IS_ERR(parent)) + parent = NULL; + /* * Finished with the static registrations now; fill in the missing * devices */ +out: of_platform_populate(NULL, of_default_bus_match_table, - tegra20_auxdata_lookup, NULL); + tegra20_auxdata_lookup, parent); } static void __init trimslice_init(void) -- 1.8.1.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/