From af8a41271b56f6d79cb4d7c7f3ca688a2d97a801 Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@metafoo.de>
Date: Fri, 15 Apr 2016 16:59:38 +0200
Subject: [PATCH] iio:adis: Add support for manual self-test flag clear
Some variants of the devices from the ADIS family don't auto-clear the
self-test bit after the self-test has completed. Instead we have to
manually clear. Add support for this to the ADIS library.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
---
drivers/iio/imu/adis.c | 7 ++++++-
include/linux/iio/imu/adis.h | 1 +
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/imu/adis.c b/drivers/iio/imu/adis.c
index 911255d41c1a4..ad6f91d061855 100644
--- a/drivers/iio/imu/adis.c
+++ b/drivers/iio/imu/adis.c
@@ -324,7 +324,12 @@ static int adis_self_test(struct adis *adis)
msleep(adis->data->startup_delay);
- return adis_check_status(adis);
+ ret = adis_check_status(adis);
+
+ if (adis->data->self_test_no_autoclear)
+ adis_write_reg_16(adis, adis->data->msc_ctrl_reg, 0x00);
+
+ return ret;
}
/**
diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h
index fa2d01ef8f55a..360da7d18a3d0 100644
--- a/include/linux/iio/imu/adis.h
+++ b/include/linux/iio/imu/adis.h
@@ -41,6 +41,7 @@ struct adis_data {
unsigned int diag_stat_reg;
unsigned int self_test_mask;
+ bool self_test_no_autoclear;
unsigned int startup_delay;
const char * const *status_error_msgs;
--
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