Expose tegra chip id and revision in /proc/cpu/chipinfo for user mode
usage.
Signed-off-by: Danny Huang <dahuang@xxxxxxxxxx>
---
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 <linux/kernel.h>
#include <linux/io.h>
#include <linux/export.h>
+#include <linux/proc_fs.h>
#include <linux/tegra-soc.h>
#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
--
To unsubscribe from this list: send the line "unsubscribe linux-tegra" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
