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path: root/drivers/soc/tegra/fuse/fuse-tegra.c
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Diffstat (limited to 'drivers/soc/tegra/fuse/fuse-tegra.c')
-rw-r--r--drivers/soc/tegra/fuse/fuse-tegra.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/soc/tegra/fuse/fuse-tegra.c b/drivers/soc/tegra/fuse/fuse-tegra.c
index 802717b9f6a3..db65ddb6a5d2 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra.c
@@ -300,6 +300,59 @@ static void tegra_enable_fuse_clk(void __iomem *base)
writel(reg, base + 0x14);
}
+static ssize_t major_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%d\n", tegra_get_major_rev());
+}
+
+static DEVICE_ATTR_RO(major);
+
+static ssize_t minor_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%d\n", tegra_get_minor_rev());
+}
+
+static DEVICE_ATTR_RO(minor);
+
+static struct attribute *tegra_soc_attr[] = {
+ &dev_attr_major.attr,
+ &dev_attr_minor.attr,
+ NULL,
+};
+
+const struct attribute_group tegra_soc_attr_group = {
+ .attrs = tegra_soc_attr,
+};
+
+#ifdef CONFIG_ARCH_TEGRA_194_SOC
+static ssize_t platform_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ /*
+ * Displays the value in the 'pre_si_platform' field of the HIDREV
+ * register for Tegra194 devices. A value of 0 indicates that the
+ * platform type is silicon and all other non-zero values indicate
+ * the type of simulation platform is being used.
+ */
+ return sprintf(buf, "%d\n", (tegra_read_chipid() >> 20) & 0xf);
+}
+
+static DEVICE_ATTR_RO(platform);
+
+static struct attribute *tegra194_soc_attr[] = {
+ &dev_attr_major.attr,
+ &dev_attr_minor.attr,
+ &dev_attr_platform.attr,
+ NULL,
+};
+
+const struct attribute_group tegra194_soc_attr_group = {
+ .attrs = tegra194_soc_attr,
+};
+#endif
+
struct device * __init tegra_soc_device_register(void)
{
struct soc_device_attribute *attr;
@@ -312,6 +365,7 @@ struct device * __init tegra_soc_device_register(void)
attr->family = kasprintf(GFP_KERNEL, "Tegra");
attr->revision = kasprintf(GFP_KERNEL, "%d", tegra_sku_info.revision);
attr->soc_id = kasprintf(GFP_KERNEL, "%u", tegra_get_chip_id());
+ attr->custom_attr_group = fuse->soc->soc_attr_group;
dev = soc_device_register(attr);
if (IS_ERR(dev)) {