From d591fdf8e23ef2abf57bdfbc4b596bf1a43d15b4 Mon Sep 17 00:00:00 2001 From: Danny Huang Date: Thu, 14 Mar 2013 08:48:40 +0800 Subject: ARM: tegra: expose chip ID and revision Expose Tegra chip ID and revision in /sys/devices/soc for user mode usage Signed-off-by: Danny Huang Signed-off-by: Stephen Warren --- arch/arm/mach-tegra/tegra.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) (limited to 'arch/arm/mach-tegra/tegra.c') diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c index 27232c901a22..84deeab23ee7 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 +83,36 @@ static struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = { static void __init tegra_dt_init(void) { + struct soc_device_attribute *soc_dev_attr; + struct soc_device *soc_dev; + struct device *parent = NULL; + + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + goto out; + + soc_dev_attr->family = kasprintf(GFP_KERNEL, "Tegra"); + soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d", tegra_revision); + soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%d", tegra_chip_id); + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR(soc_dev)) { + kfree(soc_dev_attr->family); + kfree(soc_dev_attr->revision); + kfree(soc_dev_attr->soc_id); + kfree(soc_dev_attr); + goto out; + } + + parent = soc_device_to_device(soc_dev); + /* * 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) -- cgit v1.2.3-59-g8ed1b