Commit 146ab288 authored Sep 04, 2012 by Christophe Leroy Committed by Guenter Roeck Sep 23, 2012

hwmon: (lm70) Allow 4wire SPI bus with LM70



Removing the 3wire limitation on LM70 as the component also allows
operation on 4wire SPI bus

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

parent edec5af7

Documentation/hwmon/lm70

+2 −3

Original line number	Diff line number	Diff line
		@@ -31,9 +31,8 @@ As a real (in-tree) example of this "SPI protocol driver" interfacing
		with a "SPI master controller driver", see drivers/spi/spi_lm70llp.c
		and its associated documentation.

		The TMP121/TMP123 are very similar; main differences are 4 wire SPI inter-
		face (read only) and 13-bit temperature data (0.0625 degrees celsius reso-
		lution).
		The TMP121/TMP123 are very similar; main difference is 13-bit temperature
		data (0.0625 degrees celsius resolution).

		Thanks to
		---------

drivers/hwmon/lm70.c

+0 −4

Original line number	Diff line number	Diff line
		@@ -143,10 +143,6 @@ static int __devinit lm70_probe(struct spi_device *spi)
		if (spi->mode & (SPI_CPOL \| SPI_CPHA))
		return -EINVAL;

		/* 3-wire link (shared SI/SO) for LM70 */
		if (chip == LM70_CHIP_LM70 && !(spi->mode & SPI_3WIRE))
		return -EINVAL;

		/* NOTE: we assume 8-bit words, and convert to 16 bits manually */

		p_lm70 = devm_kzalloc(&spi->dev, sizeof(*p_lm70), GFP_KERNEL);