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Date: Thu, 21 Feb 2019 18:02:49 +0100 From: "H. Nikolaus Schaller" <hns@...delico.com> To: Linus Walleij <linus.walleij@...aro.org>, Jonathan Cameron <jic23@...nel.org>, Rob Herring <robh+dt@...nel.org>, Mark Rutland <mark.rutland@....com>, "H. Nikolaus Schaller" <hns@...delico.com>, Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, Charles Keepax <ckeepax@...nsource.cirrus.com>, Song Qiang <songqiang1304521@...il.com>, Jean-Baptiste Maneyrol <jmaneyrol@...ensense.com>, Martin Kelly <mkelly@...o.com>, Jonathan Marek <jonathan@...ek.ca>, Brian Masney <masneyb@...tation.org>, Stephan Gerhold <stephan@...hold.net> Cc: letux-kernel@...nphoenux.org, Hartmut Knaack <knaack.h@....de>, Lars-Peter Clausen <lars@...afoo.de>, Peter Meerwald-Stadler <pmeerw@...erw.net>, linux-iio@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH v2 04/10] iio: accel: bma180: add mount matrix support 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@...delico.com> --- 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; -- 2.19.1
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