diff mbox series

[v3,2/5] iio: accel: mc3230: add mount matrix support

Message ID 20250112-mainlining-mc3510c-v3-2-9ee6520ab69d@gmail.com (mailing list archive)
State New
Headers show
Series iio: accel: mc3230: add mount matrix, of match and mc3510c support | expand

Commit Message

Vasiliy Doylov via B4 Relay Jan. 12, 2025, 12:25 p.m. UTC
From: Vasiliy Doylov <nekodevelopper@gmail.com>

This patch allows to read a mount-matrix device tree
property and report to user-space or in-kernel iio clients.

Signed-off-by: Vasiliy Doylov <nekodevelopper@gmail.com>
---
 drivers/iio/accel/mc3230.c | 28 ++++++++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

Comments

Jonathan Cameron Jan. 12, 2025, 4:28 p.m. UTC | #1
On Sun, 12 Jan 2025 15:25:36 +0300
Vasiliy Doylov via B4 Relay <devnull+nekodevelopper.gmail.com@kernel.org> wrote:

> From: Vasiliy Doylov <nekodevelopper@gmail.com>
> 
> This patch allows to read a mount-matrix device tree
> property and report to user-space or in-kernel iio clients.
> 
> Signed-off-by: Vasiliy Doylov <nekodevelopper@gmail.com>
> ---
>  drivers/iio/accel/mc3230.c | 28 ++++++++++++++++++++++++----
>  1 file changed, 24 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/iio/accel/mc3230.c b/drivers/iio/accel/mc3230.c
> index caa40a14a6316acae3a972f0ebe0b325db96eb44..a153a3f715ed7f2f1417618715767f265b49191d 100644
> --- a/drivers/iio/accel/mc3230.c
> +++ b/drivers/iio/accel/mc3230.c
> @@ -44,18 +44,34 @@ static const int mc3230_nscale = 115411765;
>  	.channel2 = IIO_MOD_##axis,	\
>  	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),	\
>  	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
> +	.ext_info = mc3230_ext_info, \
>  }
>  
> +struct mc3230_data {
> +	struct i2c_client *client;
> +	struct iio_mount_matrix orientation;
> +};
> +
> +static const struct iio_mount_matrix *
> +mc3230_get_mount_matrix(const struct iio_dev *indio_dev,
> +			const struct iio_chan_spec *chan)
> +{
> +	struct mc3230_data *data = iio_priv(indio_dev);
> +
> +	return &data->orientation;
> +}
> +
> +static const struct iio_chan_spec_ext_info mc3230_ext_info[] = {
> +	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, mc3230_get_mount_matrix),
> +	{}
Trivial but if you are going around again for some other reason:
I'm (slowly) trying to standarize on { } (with a space) for these terminators in IIO.

> +};
> +
>  static const struct iio_chan_spec mc3230_channels[] = {
>  	MC3230_CHANNEL(MC3230_REG_XOUT, X),
>  	MC3230_CHANNEL(MC3230_REG_YOUT, Y),
>  	MC3230_CHANNEL(MC3230_REG_ZOUT, Z),
>  };
>  
> -struct mc3230_data {
> -	struct i2c_client *client;
> -};
> -
>  static int mc3230_set_opcon(struct mc3230_data *data, int opcon)
>  {
>  	int ret;
> @@ -141,6 +157,10 @@ static int mc3230_probe(struct i2c_client *client)
>  	if (ret < 0)
>  		return ret;
>  
> +	ret = iio_read_mount_matrix(&client->dev, &data->orientation);
> +	if (ret)
> +		return ret;
> +
>  	ret = iio_device_register(indio_dev);
>  	if (ret < 0) {
>  		dev_err(&client->dev, "device_register failed\n");
>
diff mbox series

Patch

diff --git a/drivers/iio/accel/mc3230.c b/drivers/iio/accel/mc3230.c
index caa40a14a6316acae3a972f0ebe0b325db96eb44..a153a3f715ed7f2f1417618715767f265b49191d 100644
--- a/drivers/iio/accel/mc3230.c
+++ b/drivers/iio/accel/mc3230.c
@@ -44,18 +44,34 @@  static const int mc3230_nscale = 115411765;
 	.channel2 = IIO_MOD_##axis,	\
 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),	\
 	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
+	.ext_info = mc3230_ext_info, \
 }
 
+struct mc3230_data {
+	struct i2c_client *client;
+	struct iio_mount_matrix orientation;
+};
+
+static const struct iio_mount_matrix *
+mc3230_get_mount_matrix(const struct iio_dev *indio_dev,
+			const struct iio_chan_spec *chan)
+{
+	struct mc3230_data *data = iio_priv(indio_dev);
+
+	return &data->orientation;
+}
+
+static const struct iio_chan_spec_ext_info mc3230_ext_info[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, mc3230_get_mount_matrix),
+	{}
+};
+
 static const struct iio_chan_spec mc3230_channels[] = {
 	MC3230_CHANNEL(MC3230_REG_XOUT, X),
 	MC3230_CHANNEL(MC3230_REG_YOUT, Y),
 	MC3230_CHANNEL(MC3230_REG_ZOUT, Z),
 };
 
-struct mc3230_data {
-	struct i2c_client *client;
-};
-
 static int mc3230_set_opcon(struct mc3230_data *data, int opcon)
 {
 	int ret;
@@ -141,6 +157,10 @@  static int mc3230_probe(struct i2c_client *client)
 	if (ret < 0)
 		return ret;
 
+	ret = iio_read_mount_matrix(&client->dev, &data->orientation);
+	if (ret)
+		return ret;
+
 	ret = iio_device_register(indio_dev);
 	if (ret < 0) {
 		dev_err(&client->dev, "device_register failed\n");