From: Boris Brezillon <boris.brezillon@collabora.com>
To: Vitor Soares <vitor.soares@synopsys.com>
Cc: lars@metafoo.de, bbrezillon@kernel.org,
linux-iio@vger.kernel.org, gregkh@linuxfoundation.org,
joao.pinto@synopsys.com, rafael@kernel.org,
linux-kernel@vger.kernel.org, broonie@kernel.org,
pmeerw@pmeerw.net, knaack.h@gmx.de, lorenzo.bianconi83@gmail.com,
linux-i3c@lists.infradead.org, jic23@kernel.org
Subject: Re: [PATCH 3/3] iio: imu: st_lsm6dsx: Add i3c basic support
Date: Tue, 16 Apr 2019 08:25:39 +0200 [thread overview]
Message-ID: <20190416082539.2f12b38f@collabora.com> (raw)
In-Reply-To: <302f8296299d6cd25b3689f5eca1c510a3290db3.1555354268.git.vitor.soares@synopsys.com>
On Mon, 15 Apr 2019 21:19:41 +0200
Vitor Soares <vitor.soares@synopsys.com> wrote:
> For today the st_lsm6dsx driver support lsm6dso sensor only in
> spi and i2c mode.
>
> The lsm6dso is also i3c capable so lets give i3c support to it.
>
> Signed-off-by: Vitor Soares <vitor.soares@synopsys.com>
> ---
> drivers/iio/imu/st_lsm6dsx/Kconfig | 8 +++-
> drivers/iio/imu/st_lsm6dsx/Makefile | 1 +
> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c | 67 +++++++++++++++++++++++++++++
> 3 files changed, 75 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 094fd00..1ab9bbf 100644
> --- a/drivers/iio/imu/st_lsm6dsx/Kconfig
> +++ b/drivers/iio/imu/st_lsm6dsx/Kconfig
> @@ -1,11 +1,12 @@
>
> 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,
> @@ -23,3 +24,8 @@ config IIO_ST_LSM6DSX_SPI
> tristate
> depends on IIO_ST_LSM6DSX
> select REGMAP_SPI
> +
> +config IIO_ST_LSM6DSX_I3C
> + tristate
> + depends on IIO_ST_LSM6DSX
> + select REGMAP_I3C
> diff --git a/drivers/iio/imu/st_lsm6dsx/Makefile b/drivers/iio/imu/st_lsm6dsx/Makefile
> index e5f733c..c676965 100644
> --- a/drivers/iio/imu/st_lsm6dsx/Makefile
> +++ b/drivers/iio/imu/st_lsm6dsx/Makefile
> @@ -4,3 +4,4 @@ st_lsm6dsx-y := st_lsm6dsx_core.o st_lsm6dsx_buffer.o \
> obj-$(CONFIG_IIO_ST_LSM6DSX) += st_lsm6dsx.o
> obj-$(CONFIG_IIO_ST_LSM6DSX_I2C) += st_lsm6dsx_i2c.o
> obj-$(CONFIG_IIO_ST_LSM6DSX_SPI) += st_lsm6dsx_spi.o
> +obj-$(CONFIG_IIO_ST_LSM6DSX_I3C) += st_lsm6dsx_i3c.o
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c
> new file mode 100644
> index 0000000..2df5e70
> --- /dev/null
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c
> @@ -0,0 +1,67 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2018 Synopsys, Inc. and/or its affiliates.
> + *
> + * Author: Vitor Soares <vitor.soares@synopsys.com>
> + */
> +
> +#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 {
> + char name[NAME_SIZE];
const char *name;
> + enum st_lsm6dsx_hw_id id;
> +};
> +
> +static const struct st_lsm6dsx_i3c_data hw_data[] = {
No need to make it an array, and it should probably be named
st_lsm6dso_data not hw_data.
> + { ST_LSM6DSO_DEV_NAME, ST_LSM6DSO_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);
i3c_device_match_id(i3cdev,
st_lsm6dsx_i3c_ids);
> + 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[0]),
> + { /* sentinel */ },
> +};
> +MODULE_DEVICE_TABLE(i3c, st_lsm6dsx_i3c_ids);
> +
> +static struct i3c_driver st_lsm6dsx_driver = {
> + .driver.name = "st_lsm6dsx_i3c",
> + .probe = st_lsm6dsx_i3c_probe,
> + .id_table = st_lsm6dsx_i3c_ids,
You should probably set the pm_ops here (st_lsm6dsx_pm_ops).
> +};
> +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");
> +
You can remove this blank line.
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next prev parent reply other threads:[~2019-04-16 11:12 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-15 19:19 [PATCH 0/3] Add ST lsm6dso i3c suppport Vitor Soares
2019-04-15 19:19 ` [PATCH 1/3] remap: Add I3C bus support Vitor Soares
2019-04-16 6:15 ` Boris Brezillon
2019-04-16 14:41 ` Vitor Soares
[not found] ` <20190416153948.GF4834@sirena.org.uk>
2019-04-23 14:58 ` Vitor Soares
2019-04-23 15:14 ` Boris Brezillon
2019-04-23 15:55 ` Vitor Soares
2019-04-15 19:19 ` [PATCH 2/3] i3c: Add i3c_get_device_id helper Vitor Soares
2019-04-16 6:18 ` Boris Brezillon
2019-04-16 14:48 ` Vitor Soares
2019-04-15 19:19 ` [PATCH 3/3] iio: imu: st_lsm6dsx: Add i3c basic support Vitor Soares
2019-04-15 22:17 ` Lorenzo Bianconi
2019-04-16 13:53 ` Vitor Soares
2019-04-16 6:25 ` Boris Brezillon [this message]
2019-04-16 7:58 ` Lorenzo Bianconi
2019-04-16 8:05 ` Boris Brezillon
2019-04-16 15:00 ` Vitor Soares
2019-04-16 15:02 ` Vitor Soares
2019-04-16 6:32 ` [PATCH 0/3] Add ST lsm6dso i3c suppport Boris Brezillon
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