From: Marcus Folkesson <marcus.folkesson@gmail.com>
To: Marcus Folkesson <marcus.folkesson@gmail.com>,
Kent Gustavsson <kent@minoris.se>,
Jonathan Cameron <jic23@kernel.org>,
Lars-Peter Clausen <lars@metafoo.de>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v5 1/9] iio: adc: mcp3911: make use of the sign bit
Date: Tue, 9 Aug 2022 09:36:40 +0200 [thread overview]
Message-ID: <20220809073648.167821-2-marcus.folkesson@gmail.com> (raw)
In-Reply-To: <20220809073648.167821-1-marcus.folkesson@gmail.com>
The device supports negative values as well.
Fixes: 3a89b289df5d ("iio: adc: add support for mcp3911")
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
drivers/iio/adc/mcp3911.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iio/adc/mcp3911.c b/drivers/iio/adc/mcp3911.c
index 1cb4590fe412..f581cefb6719 100644
--- a/drivers/iio/adc/mcp3911.c
+++ b/drivers/iio/adc/mcp3911.c
@@ -113,6 +113,8 @@ static int mcp3911_read_raw(struct iio_dev *indio_dev,
if (ret)
goto out;
+ *val = sign_extend32(*val, 23);
+
ret = IIO_VAL_INT;
break;
--
2.37.1
next prev parent reply other threads:[~2022-08-09 7:32 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-09 7:36 [PATCH v5 0/9] Improve MCP3911 driver Marcus Folkesson
2022-08-09 7:36 ` Marcus Folkesson [this message]
2022-08-09 7:36 ` [PATCH v5 2/9] iio: adc: mcp3911: correct "microchip,device-addr" property Marcus Folkesson
2022-08-09 7:36 ` [PATCH v5 3/9] iio: adc: mcp3911: use correct formula for AD conversion Marcus Folkesson
2022-08-09 7:36 ` [PATCH v5 4/9] iio: adc: mcp3911: use resource-managed version of iio_device_register Marcus Folkesson
2022-08-09 9:39 ` Andy Shevchenko
2022-08-09 9:40 ` Andy Shevchenko
2022-08-14 14:27 ` Jonathan Cameron
2022-08-09 7:36 ` [PATCH v5 5/9] iio: adc: mcp3911: add support for buffers Marcus Folkesson
2022-08-09 9:52 ` Andy Shevchenko
2022-08-14 14:31 ` Jonathan Cameron
2022-08-09 7:36 ` [PATCH v5 6/9] iio: adc: mcp3911: add support for interrupts Marcus Folkesson
2022-08-09 7:36 ` [PATCH v5 7/9] dt-bindings: iio: adc: mcp3911: add microchip,data-ready-hiz entry Marcus Folkesson
2022-08-09 9:57 ` Andy Shevchenko
2022-08-15 6:07 ` Marcus Folkesson
2022-08-09 7:36 ` [PATCH v5 8/9] iio: adc: mcp3911: add support for oversampling ratio Marcus Folkesson
2022-08-09 7:36 ` [PATCH v5 9/9] iio: adc: mcp3911: add support to set PGA Marcus Folkesson
2022-08-14 14:34 ` [PATCH v5 0/9] Improve MCP3911 driver Jonathan Cameron
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