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Date:   Sun, 3 Mar 2019 15:20:50 +0000
From:   Jonathan Cameron <jic23@kernel.org>
To:     "H. Nikolaus Schaller" <hns@goldelico.com>
Cc:     Linus Walleij <linus.walleij@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Charles Keepax <ckeepax@opensource.cirrus.com>,
        Song Qiang <songqiang1304521@gmail.com>,
        Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>,
        Martin Kelly <mkelly@xevo.com>,
        Jonathan Marek <jonathan@marek.ca>,
        Brian Masney <masneyb@onstation.org>,
        Stephan Gerhold <stephan@gerhold.net>,
        letux-kernel@openphoenux.org, Hartmut Knaack <knaack.h@gmx.de>,
        Lars-Peter Clausen <lars@metafoo.de>,
        Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
        linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 04/10] iio: accel: bma180: add mount matrix support
Message-ID: <20190303152050.1bd70f7d@archlinux>
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        <39eb050ab5ba5a10f624f95f2bf4582e4e7ccbde.1550768574.git.hns@goldelico.com>
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On Thu, 21 Feb 2019 18:02:49 +0100
"H. Nikolaus Schaller" <hns@goldelico.com> wrote:

> This patch allows to read a mount-matrix device tree
> property and report to user-space or in-kernel iio
> clients.
> 
> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Applied.

Thanks,

Jonathan

> ---
>  drivers/iio/accel/bma180.c | 18 +++++++++++++++++-
>  1 file changed, 17 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
> index cb9765a3de60..f9720a1e8a7c 100644
> --- a/drivers/iio/accel/bma180.c
> +++ b/drivers/iio/accel/bma180.c
> @@ -116,6 +116,7 @@ struct bma180_data {
>  	struct i2c_client *client;
>  	struct iio_trigger *trig;
>  	const struct bma180_part_info *part_info;
> +	struct iio_mount_matrix orientation;
>  	struct mutex mutex;
>  	bool sleep_state;
>  	int scale;
> @@ -561,6 +562,15 @@ static int bma180_set_power_mode(struct iio_dev *indio_dev,
>  	return ret;
>  }
>  
> +static const struct iio_mount_matrix *
> +bma180_accel_get_mount_matrix(const struct iio_dev *indio_dev,
> +				const struct iio_chan_spec *chan)
> +{
> +	struct bma180_data *data = iio_priv(indio_dev);
> +
> +	return &data->orientation;
> +}
> +
>  static const struct iio_enum bma180_power_mode_enum = {
>  	.items = bma180_power_modes,
>  	.num_items = ARRAY_SIZE(bma180_power_modes),
> @@ -571,7 +581,8 @@ static const struct iio_enum bma180_power_mode_enum = {
>  static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
>  	IIO_ENUM("power_mode", true, &bma180_power_mode_enum),
>  	IIO_ENUM_AVAILABLE("power_mode", &bma180_power_mode_enum),
> -	{ },
> +	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, bma180_accel_get_mount_matrix),
> +	{ }
>  };
>  
>  #define BMA180_ACC_CHANNEL(_axis, _bits) {				\
> @@ -722,6 +733,11 @@ static int bma180_probe(struct i2c_client *client,
>  		chip = id->driver_data;
>  	data->part_info = &bma180_part_info[chip];
>  
> +	ret = iio_read_mount_matrix(&client->dev, "mount-matrix",
> +				&data->orientation);
> +	if (ret)
> +		return ret;
> +
>  	ret = data->part_info->chip_config(data);
>  	if (ret < 0)
>  		goto err_chip_disable;