From: Beniamin Bia <beniamin.bia@analog.com>
To: <jic23@kernel.org>
Cc: <linux-iio@vger.kernel.org>, Beniamin Bia <beniamin.bia@analog.com>
Subject: [PATCH 3/5] iio: adc: ad7606: Allow reconfigration after reset
Date: Wed, 3 Jul 2019 17:36:46 +0300 [thread overview]
Message-ID: <20190703143648.24402-3-beniamin.bia@analog.com> (raw)
In-Reply-To: <20190703143648.24402-1-beniamin.bia@analog.com>
According to datasheet, ad7616 require at least 15ms after a restart
to fully reconfigure and being able to receive new commands via spi.
Signed-off-by: Beniamin Bia <beniamin.bia@analog.com>
---
drivers/iio/adc/ad7606.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c
index 9eec3db01a17..a6034cf7238a 100644
--- a/drivers/iio/adc/ad7606.c
+++ b/drivers/iio/adc/ad7606.c
@@ -594,6 +594,10 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
if (ret)
dev_warn(st->dev, "failed to RESET: no RESET GPIO specified\n");
+ /* AD7616 requires al least 15ms to reconfigure after a reset */
+ if (msleep_interruptible(15))
+ return -ERESTARTSYS;
+
st->write_scale = ad7606_write_scale_hw;
st->write_os = ad7606_write_os_hw;
--
2.17.1
next prev parent reply other threads:[~2019-07-03 13:47 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-03 14:36 [PATCH 1/5] iio: adc: ad7606: Move common channel definition to header Beniamin Bia
2019-07-03 14:36 ` [PATCH 2/5] iio: adc: ad7606: Move spi dependent features to spi file Beniamin Bia
2019-07-03 14:36 ` Beniamin Bia [this message]
2019-07-03 14:36 ` [PATCH 4/5] iio: adc: ad7606: Add support for software mode for ad7616 Beniamin Bia
2019-07-14 15:54 ` Jonathan Cameron
2019-07-03 14:36 ` [PATCH 5/5] iio: adc: ad7606: Add debug " Beniamin Bia
2019-07-14 15:57 ` Jonathan Cameron
2019-07-18 6:27 [PATCH 1/5] iio: adc: ad7606: Move common channel definition to header Beniamin Bia
2019-07-18 6:27 ` [PATCH 3/5] iio: adc: ad7606: Allow reconfigration after reset Beniamin Bia
2019-07-28 7:57 ` Jonathan Cameron
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