linux-kernel - Re: [PATCH v3 6/6] iio: bmg160: Add SPI driver

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Date:	Mon, 17 Aug 2015 08:39:05 +0200
From:	Markus Pargmann <mpa@...gutronix.de>
To:	Peter Meerwald <pmeerw@...erw.net>
Cc:	Jonathan Cameron <jic23@...nel.org>,
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	Vlad Dogaru <vlad.dogaru@...el.com>,
	Paul Bolle <pebolle@...cali.nl>, linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel@...gutronix.de
Subject: Re: [PATCH v3 6/6] iio: bmg160: Add SPI driver

On Wed, Aug 12, 2015 at 05:19:37PM +0200, Peter Meerwald wrote:
> On Wed, 12 Aug 2015, Markus Pargmann wrote:
> 
> > Signed-off-by: Markus Pargmann <mpa@...gutronix.de>
> 
> the spelling of Bosch is inconsistent, sometimes it is BOSCH, I'd prefer 
> the former

Right, I can fix it in this patch, yes.

> 
> please find a slightly more relevant comment below :)
> 
> > ---
> >  drivers/iio/gyro/Kconfig      | 11 +++++++++
> >  drivers/iio/gyro/Makefile     |  1 +
> >  drivers/iio/gyro/bmg160_spi.c | 57 +++++++++++++++++++++++++++++++++++++++++++
> >  3 files changed, 69 insertions(+)
> >  create mode 100644 drivers/iio/gyro/bmg160_spi.c
> > 
> > diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig
> > index 13f8e0051615..a77dbb0062fe 100644
> > --- a/drivers/iio/gyro/Kconfig
> > +++ b/drivers/iio/gyro/Kconfig
> > @@ -71,6 +71,17 @@ config BMG160_I2C
> >  	  This driver can also be built as a module.  If so, the module
> >  	  will be called bmg160_i2c.
> >  
> > +config BMG160_SPI
> > +	tristate "Driver for connection via SPI"
> > +	depends on SPI
> > +	select REGMAP_SPI
> > +	help
> > +	  Say yes here to build support for Bosch BMG160 Tri-axis Gyro Sensor
> > +	  driver connected via SPI. This driver also supports BMI055 gyroscope.
> > +
> > +	  This driver can also be built as a module.  If so, the module
> > +	  will be called bmg160_spi.
> > +
> >  endif
> >  
> >  config HID_SENSOR_GYRO_3D
> > diff --git a/drivers/iio/gyro/Makefile b/drivers/iio/gyro/Makefile
> > index 73b41e43a974..848e55c605c0 100644
> > --- a/drivers/iio/gyro/Makefile
> > +++ b/drivers/iio/gyro/Makefile
> > @@ -9,6 +9,7 @@ obj-$(CONFIG_ADIS16136) += adis16136.o
> >  obj-$(CONFIG_ADIS16260) += adis16260.o
> >  obj-$(CONFIG_ADXRS450) += adxrs450.o
> >  obj-$(CONFIG_BMG160_I2C) += bmg160_core.o bmg160_i2c.o
> > +obj-$(CONFIG_BMG160_I2C) += bmg160_core.o bmg160_spi.o
> >  
> >  obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o
> >  
> > diff --git a/drivers/iio/gyro/bmg160_spi.c b/drivers/iio/gyro/bmg160_spi.c
> > new file mode 100644
> > index 000000000000..8a358571b702
> > --- /dev/null
> > +++ b/drivers/iio/gyro/bmg160_spi.c
> > @@ -0,0 +1,57 @@
> > +#include <linux/spi/spi.h>
> > +#include <linux/regmap.h>
> > +#include <linux/iio/iio.h>
> > +#include <linux/module.h>
> > +
> > +#include <bmg160.h>
> 
> I think this should be
> #include "bmg160.h"
> as in the _i2c part of the driver

Yes, thanks.

Best regards,

Markus

> 
> > +
> > +static const struct regmap_config bmg160_regmap_spi_conf = {
> > +	.reg_bits = 8,
> > +	.val_bits = 8,
> > +	.max_register = 0x3f,
> > +};
> > +
> > +static int bmg160_spi_probe(struct spi_device *spi)
> > +{
> > +	struct regmap *regmap;
> > +	const struct spi_device_id *id = spi_get_device_id(spi);
> > +
> > +	regmap = devm_regmap_init_spi(spi, &bmg160_regmap_spi_conf);
> > +	if (IS_ERR(regmap)) {
> > +		dev_err(&spi->dev, "Failed to register spi regmap %d\n",
> > +			(int)PTR_ERR(regmap));
> > +		return PTR_ERR(regmap);
> > +	}
> > +
> > +	return bmg160_core_probe(&spi->dev, regmap, spi->irq, id->name);
> > +}
> > +
> > +static int bmg160_spi_remove(struct spi_device *spi)
> > +{
> > +	bmg160_core_remove(&spi->dev);
> > +
> > +	return 0;
> > +}
> > +
> > +static const struct spi_device_id bmg160_spi_id[] = {
> > +	{"bmg160", 0},
> > +	{"bmi055_gyro", 0},
> > +	{}
> > +};
> > +
> > +MODULE_DEVICE_TABLE(spi, bmg160_spi_id);
> > +
> > +static struct spi_driver bmg160_spi_driver = {
> > +	.driver = {
> > +		.name	= "bmg160_spi",
> > +		.pm	= &bmg160_pm_ops,
> > +	},
> > +	.probe		= bmg160_spi_probe,
> > +	.remove		= bmg160_spi_remove,
> > +	.id_table	= bmg160_spi_id,
> > +};
> > +module_spi_driver(bmg160_spi_driver);
> > +
> > +MODULE_AUTHOR("Markus Pargmann <mpa@...gutronix.de>");
> > +MODULE_LICENSE("GPL v2");
> > +MODULE_DESCRIPTION("BMG160 SPI Gyro driver");
> > 
> 
> -- 
> 
> Peter Meerwald
> +43-664-2444418 (mobile)
> 

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