Linux-i3c Archive on lore.kernel.org
 help / Atom feed
From: Lorenzo Bianconi <lorenzo@kernel.org>
To: Vitor Soares <Vitor.Soares@synopsys.com>
Cc: Joao.Pinto@synopsys.com, rafael@kernel.org,
	linux-iio@vger.kernel.org, gregkh@linuxfoundation.org,
	bbrezillon@kernel.org, linux-kernel@vger.kernel.org,
	broonie@kernel.org, linux-i2c@vger.kernel.org,
	lorenzo.bianconi83@gmail.com, linux-i3c@lists.infradead.org
Subject: Re: [PATCH v2 3/3] iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR
Date: Thu, 6 Jun 2019 18:58:43 +0200
Message-ID: <20190606165841.GA10356@localhost.localdomain> (raw)
In-Reply-To: <6195f3cd21636a5f85c0107b5c3b217be868a4b9.1559831663.git.vitor.soares@synopsys.com>

[-- Attachment #1.1: Type: text/plain, Size: 3890 bytes --]

> For today the st_lsm6dsx driver support LSM6DSO and LSM6DSR sensor only in
> spi and i2c mode.
> 
> The LSM6DSO and LSM6DSR are also i3c capable so lets give i3c support to
> them.
> 
> Signed-off-by: Vitor Soares <vitor.soares@synopsys.com>
> ---

Hi Vitor,

just a nit inline, but you can add my acked-by for st_lsm6dsx part in v3

Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>

Regards,
Lorenzo

> Changes in v2:
>   Add support for LSM6DSR
>   Set pm_ops to st_lsm6dsx_pm_ops
> 
>  drivers/iio/imu/st_lsm6dsx/Kconfig          |  8 ++-
>  drivers/iio/imu/st_lsm6dsx/Makefile         |  1 +
>  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c | 76 +++++++++++++++++++++++++++++
>  3 files changed, 84 insertions(+), 1 deletion(-)
>  create mode 100644 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c
> 
> diff --git a/drivers/iio/imu/st_lsm6dsx/Kconfig b/drivers/iio/imu/st_lsm6dsx/Kconfig
> index 002a423..8115936 100644
> --- a/drivers/iio/imu/st_lsm6dsx/Kconfig
> +++ b/drivers/iio/imu/st_lsm6dsx/Kconfig
> @@ -2,11 +2,12 @@
>  
>  config IIO_ST_LSM6DSX
>  	tristate "ST_LSM6DSx driver for STM 6-axis IMU MEMS sensors"
> -	depends on (I2C || SPI)
> +	depends on (I2C || SPI || I3C)
>  	select IIO_BUFFER
>  	select IIO_KFIFO_BUF
>  	select IIO_ST_LSM6DSX_I2C if (I2C)
>  	select IIO_ST_LSM6DSX_SPI if (SPI_MASTER)
> +	select IIO_ST_LSM6DSX_I3C if (I3C)
>  	help
>  	  Say yes here to build support for STMicroelectronics LSM6DSx imu
>  	  sensor. Supported devices: lsm6ds3, lsm6ds3h, lsm6dsl, lsm6dsm,
> @@ -24,3 +25,8 @@ config IIO_ST_LSM6DSX_SPI
>  	tristate
>  	depends on IIO_ST_LSM6DSX
>  	select REGMAP_SPI
> +

[...]

> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/i3c/device.h>
> +#include <linux/i3c/master.h>
> +#include <linux/slab.h>
> +#include <linux/of.h>
> +#include <linux/regmap.h>
> +
> +#include "st_lsm6dsx.h"
> +
> +#define NAME_SIZE	32
> +
> +struct st_lsm6dsx_i3c_data {
> +	const char name[NAME_SIZE];
> +	enum st_lsm6dsx_hw_id id;
> +};
> +
> +enum st_lsm6dsx_i3c_data_id {
> +	ST_LSM6DSO_I3C_DATA_ID,
> +	ST_LSM6DSR_I3C_DATA_ID,
> +};

do we really need them? maybe just use hw_data[n] adding a comment to indicate
the related sensor defining st_lsm6dsx_i3c_ids[]

> +
> +static const struct st_lsm6dsx_i3c_data hw_data[] = {
> +	{ ST_LSM6DSO_DEV_NAME, ST_LSM6DSO_ID },
> +	{ ST_LSM6DSR_DEV_NAME, ST_LSM6DSR_ID },
> +};
> +
> +static const struct regmap_config st_lsm6dsx_i3c_regmap_config = {
> +	.reg_bits = 8,
> +	.val_bits = 8,
> +};
> +
> +static int st_lsm6dsx_i3c_probe(struct i3c_device *i3cdev)
> +{
> +	const struct i3c_device_id *id = i3c_get_device_id(i3cdev);
> +	const struct st_lsm6dsx_i3c_data *hw_data = id->data;
> +	struct regmap *regmap;
> +
> +	regmap = devm_regmap_init_i3c(i3cdev, &st_lsm6dsx_i3c_regmap_config);
> +	if (IS_ERR(regmap)) {
> +		dev_err(&i3cdev->dev, "Failed to register i3c regmap %d\n",
> +			(int)PTR_ERR(regmap));
> +		return PTR_ERR(regmap);
> +	}
> +
> +	return st_lsm6dsx_probe(&i3cdev->dev, 0, hw_data->id,
> +				hw_data->name, regmap);
> +}
> +
> +static const struct i3c_device_id st_lsm6dsx_i3c_ids[] = {
> +	I3C_DEVICE(0x0104, 0x006C, &hw_data[ST_LSM6DSO_I3C_DATA_ID]),
> +	I3C_DEVICE(0x0104, 0x006B, &hw_data[ST_LSM6DSR_I3C_DATA_ID]),
> +	{ /* sentinel */ },
> +};
> +MODULE_DEVICE_TABLE(i3c, st_lsm6dsx_i3c_ids);
> +
> +static struct i3c_driver st_lsm6dsx_driver = {
> +	.driver = {
> +		.name = "st_lsm6dsx_i3c",
> +		.pm = &st_lsm6dsx_pm_ops,
> +	},
> +	.probe = st_lsm6dsx_i3c_probe,
> +	.id_table = st_lsm6dsx_i3c_ids,
> +};
> +module_i3c_driver(st_lsm6dsx_driver);
> +
> +MODULE_AUTHOR("Vitor Soares <vitor.soares@synopsys.com>");
> +MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i3c driver");
> +MODULE_LICENSE("GPL v2");
> -- 
> 2.7.4
> 

[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]

[-- Attachment #2: Type: text/plain, Size: 155 bytes --]

_______________________________________________
linux-i3c mailing list
linux-i3c@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-i3c

  reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-06 15:12 [PATCH v2 0/3] Add ST lsm6dso i3c support Vitor Soares
2019-06-06 15:12 ` [PATCH v2 1/3] regmap: add i3c bus support Vitor Soares
2019-06-07 12:25   ` Mark Brown
2019-06-07 12:27   ` Applied "regmap: add i3c bus support" to the regmap tree Mark Brown
2019-06-06 15:12 ` [PATCH v2 2/3] i3c: add i3c_get_device_id helper Vitor Soares
2019-06-06 15:17   ` Boris Brezillon
2019-06-06 16:58     ` Vitor Soares
2019-06-06 15:12 ` [PATCH v2 3/3] iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR Vitor Soares
2019-06-06 16:58   ` Lorenzo Bianconi [this message]
2019-06-06 17:21   ` Boris Brezillon
2019-06-06 17:50     ` Lorenzo Bianconi
2019-06-06 16:25 ` [PATCH v2 0/3] Add ST lsm6dso i3c support Wolfram Sang
2019-06-06 16:42   ` Vitor Soares
2019-06-06 18:01     ` Wolfram Sang
2019-06-11 11:42 ` Vitor Soares
2019-06-13 18:38   ` Mark Brown

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190606165841.GA10356@localhost.localdomain \
    --to=lorenzo@kernel.org \
    --cc=Joao.Pinto@synopsys.com \
    --cc=Vitor.Soares@synopsys.com \
    --cc=bbrezillon@kernel.org \
    --cc=broonie@kernel.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=linux-i2c@vger.kernel.org \
    --cc=linux-i3c@lists.infradead.org \
    --cc=linux-iio@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=lorenzo.bianconi83@gmail.com \
    --cc=rafael@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-i3c Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-i3c/0 linux-i3c/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-i3c linux-i3c/ https://lore.kernel.org/linux-i3c \
		linux-i3c@lists.infradead.org linux-i3c@archiver.kernel.org
	public-inbox-index linux-i3c


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-i3c


AGPL code for this site: git clone https://public-inbox.org/ public-inbox