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-rw-r--r--drivers/mfd/cros_ec_dev.c10
-rw-r--r--include/linux/mfd/cros_ec.h1
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
index a3b319913097..71a01a096595 100644
--- a/drivers/mfd/cros_ec_dev.c
+++ b/drivers/mfd/cros_ec_dev.c
@@ -419,6 +419,16 @@ static int ec_device_probe(struct platform_device *pdev)
device_initialize(&ec->class_dev);
cdev_init(&ec->cdev, &fops);
+ /* Check whether this is actually a Fingerprint MCU rather than an EC */
+ if (cros_ec_check_features(ec, EC_FEATURE_FINGERPRINT)) {
+ dev_info(dev, "CrOS Fingerprint MCU detected.\n");
+ /*
+ * Help userspace differentiating ECs from FP MCU,
+ * regardless of the probing order.
+ */
+ ec_platform->ec_name = CROS_EC_DEV_FP_NAME;
+ }
+
/*
* Check whether this is actually an Integrated Sensor Hub (ISH)
* rather than an EC.
diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
index 31c88a0070a3..276079699504 100644
--- a/include/linux/mfd/cros_ec.h
+++ b/include/linux/mfd/cros_ec.h
@@ -23,6 +23,7 @@
#include <linux/mutex.h>
#define CROS_EC_DEV_NAME "cros_ec"
+#define CROS_EC_DEV_FP_NAME "cros_fp"
#define CROS_EC_DEV_PD_NAME "cros_pd"
#define CROS_EC_DEV_ISH_NAME "cros_ish"