From mboxrd@z Thu Jan 1 00:00:00 1970 From: dahuang@nvidia.com (Danny Huang) Date: Mon, 11 Mar 2013 20:37:21 +0800 Subject: [PATCH] arm: tegra: fuse: export chip id and revision Message-ID: <1363005441-26329-1-git-send-email-dahuang@nvidia.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Expose tegra chip id and revision in /proc/cpu/chipinfo for user mode usage. Signed-off-by: Danny Huang --- arch/arm/mach-tegra/fuse.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/arm/mach-tegra/fuse.c b/arch/arm/mach-tegra/fuse.c index f7db078..7895542 100644 --- a/arch/arm/mach-tegra/fuse.c +++ b/arch/arm/mach-tegra/fuse.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include "fuse.h" @@ -43,6 +44,7 @@ enum tegra_revision tegra_revision; static int tegra_fuse_spare_bit; static void (*tegra_init_speedo_data)(void); +static struct proc_dir_entry *proc_entry; /* The BCT to use at boot is specified by board straps that can be read * through a APB misc register and decoded. 2 bits, i.e. 4 possible BCTs. @@ -161,3 +163,20 @@ unsigned long long tegra_chip_uid(void) return (hi << 32ull) | lo; } EXPORT_SYMBOL(tegra_chip_uid); + +static int show_chip_info(char *page, char **start, off_t offset, + int count, int *eof, void *data) +{ + return snprintf(page, count, "tegra_chip_id: %d\ntegra_chip_rev: %d\n", + tegra_chip_id, tegra_revision); +} + +static int __init tegra_chip_info(void) +{ + proc_entry = create_proc_entry("cpu/chipinfo", S_IRUGO, NULL); + if (proc_entry) + proc_entry->read_proc = show_chip_info; + return 0; +} + +late_initcall(tegra_chip_info); -- 1.8.1.5