[v6,2/2] iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR

Commit Message

Vitor Soares July 19, 2019, 1:30 p.m. UTC

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 let's give i3c support to
them.

Signed-off-by: Vitor Soares <[e-mail]>
Acked-by: Lorenzo Bianconi <[e-mail]>
Reviewed-by: Boris Brezillon <[e-mail]>
---
Changes in v6:
  none

Changes in v5:
  Move regmap_config declaration inside st_lsm6dsx_i3c_probe()
  Fix warning [-Wint-to-void-pointer-cast] when compiling in 64-bit arch

Changes in v4:
  Remove hw_id variable

Changes in v3:
  Remove unnecessary st_lsm6dsx_i3c_data table used to hold device name
  Use st_lsm6dsx_probe new form

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 | 57 +++++++++++++++++++++++++++++
 3 files changed, 65 insertions(+), 1 deletion(-)
 create mode 100644 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c

Comments

Jonathan Cameron July 21, 2019, 5:16 p.m. UTC | #1

On Fri, 19 Jul 2019 15:30:55 +0200
Vitor Soares <[e-mail]> wrote:

> 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 let's give i3c support to
> them.
> 
> Signed-off-by: Vitor Soares <[e-mail]>
> Acked-by: Lorenzo Bianconi <[e-mail]>
> Reviewed-by: Boris Brezillon <[e-mail]>
Great. I'll pick this up once Boris has that immutable branch
available. Give me a poke if I seem to have lost it!

Thanks,

Jonathan

> ---
> Changes in v6:
>   none
> 
> Changes in v5:
>   Move regmap_config declaration inside st_lsm6dsx_i3c_probe()
>   Fix warning [-Wint-to-void-pointer-cast] when compiling in 64-bit arch
> 
> Changes in v4:
>   Remove hw_id variable
> 
> Changes in v3:
>   Remove unnecessary st_lsm6dsx_i3c_data table used to hold device name
>   Use st_lsm6dsx_probe new form
> 
> 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 | 57 +++++++++++++++++++++++++++++
>  3 files changed, 65 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 9e59297..6b5a73c 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..57e6331
> --- /dev/null
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c
> @@ -0,0 +1,57 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2018 Synopsys, Inc. and/or its affiliates.
> + *
> + * Author: Vitor Soares <[e-mail]>
> + */
> +
> +#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"
> +
> +static const struct i3c_device_id st_lsm6dsx_i3c_ids[] = {
> +	I3C_DEVICE(0x0104, 0x006C, (void *)ST_LSM6DSO_ID),
> +	I3C_DEVICE(0x0104, 0x006B, (void *)ST_LSM6DSR_ID),
> +	{ /* sentinel */ },
> +};
> +MODULE_DEVICE_TABLE(i3c, st_lsm6dsx_i3c_ids);
> +
> +static int st_lsm6dsx_i3c_probe(struct i3c_device *i3cdev)
> +{
> +	struct regmap_config st_lsm6dsx_i3c_regmap_config = {
> +		.reg_bits = 8,
> +		.val_bits = 8,
> +	};
> +	const struct i3c_device_id *id = i3c_device_match_id(i3cdev,
> +							    st_lsm6dsx_i3c_ids);
> +	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, (uintptr_t)id->data, regmap);
> +}
> +
> +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 <[e-mail]>");
> +MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i3c driver");
> +MODULE_LICENSE("GPL v2");

Boris Brezillon July 27, 2019, 10:42 a.m. UTC | #2

On Sun, 21 Jul 2019 18:16:56 +0100
Jonathan Cameron <[e-mail]> wrote:

> On Fri, 19 Jul 2019 15:30:55 +0200
> Vitor Soares <[e-mail]> wrote:
> 
> > 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 let's give i3c support to
> > them.
> > 
> > Signed-off-by: Vitor Soares <[e-mail]>
> > Acked-by: Lorenzo Bianconi <[e-mail]>
> > Reviewed-by: Boris Brezillon <[e-mail]>  
> Great. I'll pick this up once Boris has that immutable branch
> available. Give me a poke if I seem to have lost it!

Here it is:

The following changes since commit 5f9e832c137075045d15cd6899ab0505cfb2ca4b:

  Linus 5.3-rc1 (2019-07-21 14:05:38 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux.git tags/i3c/export-i3c_device_match_id

for you to fetch changes up to 934d24a5e1508e73c0001afb54a3916e4270428f:

  i3c: move i3c_device_match_id to device.c and export it (2019-07-27 11:22:19 +0200)

----------------------------------------------------------------
Needed for the st_lsm6dsx_i3c.c driver

----------------------------------------------------------------
Vitor Soares (1):
      i3c: move i3c_device_match_id to device.c and export it

 drivers/i3c/device.c       | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 drivers/i3c/master.c       | 45 ---------------------------------------------
 include/linux/i3c/device.h |  4 ++++
 3 files changed, 57 insertions(+), 45 deletions(-)

Jonathan Cameron July 27, 2019, 8:54 p.m. UTC | #3

On Sat, 27 Jul 2019 12:42:12 +0200
Boris Brezillon <[e-mail]> wrote:

> On Sun, 21 Jul 2019 18:16:56 +0100
> Jonathan Cameron <[e-mail]> wrote:
> 
> > On Fri, 19 Jul 2019 15:30:55 +0200
> > Vitor Soares <[e-mail]> wrote:
> >   
> > > 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 let's give i3c support to
> > > them.
> > > 
> > > Signed-off-by: Vitor Soares <[e-mail]>
> > > Acked-by: Lorenzo Bianconi <[e-mail]>
> > > Reviewed-by: Boris Brezillon <[e-mail]>    
> > Great. I'll pick this up once Boris has that immutable branch
> > available. Give me a poke if I seem to have lost it!  
> 
> Here it is:
> 
Great. Merged that into the togreg branch of iio and applied this patch.

Pushed out as testing to let the autobuilders have a poke at it all.

Thanks,

Jonathan

> The following changes since commit 5f9e832c137075045d15cd6899ab0505cfb2ca4b:
> 
>   Linus 5.3-rc1 (2019-07-21 14:05:38 -0700)
> 
> are available in the Git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux.git tags/i3c/export-i3c_device_match_id
> 
> for you to fetch changes up to 934d24a5e1508e73c0001afb54a3916e4270428f:
> 
>   i3c: move i3c_device_match_id to device.c and export it (2019-07-27 11:22:19 +0200)
> 
> ----------------------------------------------------------------
> Needed for the st_lsm6dsx_i3c.c driver
> 
> ----------------------------------------------------------------
> Vitor Soares (1):
>       i3c: move i3c_device_match_id to device.c and export it
> 
>  drivers/i3c/device.c       | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
>  drivers/i3c/master.c       | 45 ---------------------------------------------
>  include/linux/i3c/device.h |  4 ++++
>  3 files changed, 57 insertions(+), 45 deletions(-)
> 
>

Vitor Soares Sept. 25, 2019, 3:35 p.m. UTC | #4

Hi Jonathan,

From: Jonathan Cameron <[e-mail]>
Date: Sun, Jul 21, 2019 at 18:16:56

> On Fri, 19 Jul 2019 15:30:55 +0200
> Vitor Soares <[e-mail]> wrote:
> 
> > 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 let's give i3c support to
> > them.
> > 
> > Signed-off-by: Vitor Soares <[e-mail]>
> > Acked-by: Lorenzo Bianconi <[e-mail]>
> > Reviewed-by: Boris Brezillon <[e-mail]>
> Great. I'll pick this up once Boris has that immutable branch
> available. Give me a poke if I seem to have lost it!
> 
> Thanks,
> 
> Jonathan

I didn't see the i3c support for st_lsm6dsx driver in pull request, could 
you please check it?

Best regards,
Vitor Soares

> > ---
> > Changes in v6:
> >   none
> > 
> > Changes in v5:
> >   Move regmap_config declaration inside st_lsm6dsx_i3c_probe()
> >   Fix warning [-Wint-to-void-pointer-cast] when compiling in 64-bit arch
> > 
> > Changes in v4:
> >   Remove hw_id variable
> > 
> > Changes in v3:
> >   Remove unnecessary st_lsm6dsx_i3c_data table used to hold device name
> >   Use st_lsm6dsx_probe new form
> > 
> > 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 | 57 +++++++++++++++++++++++++++++
> >  3 files changed, 65 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 9e59297..6b5a73c 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..57e6331
> > --- /dev/null
> > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c
> > @@ -0,0 +1,57 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * Copyright (c) 2018 Synopsys, Inc. and/or its affiliates.
> > + *
> > + * Author: Vitor Soares <[e-mail]>
> > + */
> > +
> > +#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"
> > +
> > +static const struct i3c_device_id st_lsm6dsx_i3c_ids[] = {
> > +	I3C_DEVICE(0x0104, 0x006C, (void *)ST_LSM6DSO_ID),
> > +	I3C_DEVICE(0x0104, 0x006B, (void *)ST_LSM6DSR_ID),
> > +	{ /* sentinel */ },
> > +};
> > +MODULE_DEVICE_TABLE(i3c, st_lsm6dsx_i3c_ids);
> > +
> > +static int st_lsm6dsx_i3c_probe(struct i3c_device *i3cdev)
> > +{
> > +	struct regmap_config st_lsm6dsx_i3c_regmap_config = {
> > +		.reg_bits = 8,
> > +		.val_bits = 8,
> > +	};
> > +	const struct i3c_device_id *id = i3c_device_match_id(i3cdev,
> > +							    st_lsm6dsx_i3c_ids);
> > +	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, (uintptr_t)id->data, regmap);
> > +}
> > +
> > +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 <[e-mail]>");
> > +MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i3c driver");
> > +MODULE_LICENSE("GPL v2");

Jonathan Cameron Oct. 3, 2019, 11:49 a.m. UTC | #5

On Wed, 25 Sep 2019 15:35:10 +0000
Vitor Soares <[e-mail]> wrote:

> Hi Jonathan,
> 
> From: Jonathan Cameron <[e-mail]>
> Date: Sun, Jul 21, 2019 at 18:16:56
> 
> > On Fri, 19 Jul 2019 15:30:55 +0200
> > Vitor Soares <[e-mail]> wrote:
> >   
> > > 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 let's give i3c support to
> > > them.
> > > 
> > > Signed-off-by: Vitor Soares <[e-mail]>
> > > Acked-by: Lorenzo Bianconi <[e-mail]>
> > > Reviewed-by: Boris Brezillon <[e-mail]>  
> > Great. I'll pick this up once Boris has that immutable branch
> > available. Give me a poke if I seem to have lost it!
> > 
> > Thanks,
> > 
> > Jonathan  
> 
> I didn't see the i3c support for st_lsm6dsx driver in pull request, could 
> you please check it?
Seems to have made it

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c?h=v5.4-rc1

I checked back. Was in the first pull request back on the 12th of August.

Jonathan

> 
> Best regards,
> Vitor Soares
> 
> > > ---
> > > Changes in v6:
> > >   none
> > > 
> > > Changes in v5:
> > >   Move regmap_config declaration inside st_lsm6dsx_i3c_probe()
> > >   Fix warning [-Wint-to-void-pointer-cast] when compiling in 64-bit arch
> > > 
> > > Changes in v4:
> > >   Remove hw_id variable
> > > 
> > > Changes in v3:
> > >   Remove unnecessary st_lsm6dsx_i3c_data table used to hold device name
> > >   Use st_lsm6dsx_probe new form
> > > 
> > > 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 | 57 +++++++++++++++++++++++++++++
> > >  3 files changed, 65 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 9e59297..6b5a73c 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..57e6331
> > > --- /dev/null
> > > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c
> > > @@ -0,0 +1,57 @@
> > > +// SPDX-License-Identifier: GPL-2.0
> > > +/*
> > > + * Copyright (c) 2018 Synopsys, Inc. and/or its affiliates.
> > > + *
> > > + * Author: Vitor Soares <[e-mail]>
> > > + */
> > > +
> > > +#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"
> > > +
> > > +static const struct i3c_device_id st_lsm6dsx_i3c_ids[] = {
> > > +	I3C_DEVICE(0x0104, 0x006C, (void *)ST_LSM6DSO_ID),
> > > +	I3C_DEVICE(0x0104, 0x006B, (void *)ST_LSM6DSR_ID),
> > > +	{ /* sentinel */ },
> > > +};
> > > +MODULE_DEVICE_TABLE(i3c, st_lsm6dsx_i3c_ids);
> > > +
> > > +static int st_lsm6dsx_i3c_probe(struct i3c_device *i3cdev)
> > > +{
> > > +	struct regmap_config st_lsm6dsx_i3c_regmap_config = {
> > > +		.reg_bits = 8,
> > > +		.val_bits = 8,
> > > +	};
> > > +	const struct i3c_device_id *id = i3c_device_match_id(i3cdev,
> > > +							    st_lsm6dsx_i3c_ids);
> > > +	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, (uintptr_t)id->data, regmap);
> > > +}
> > > +
> > > +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 <[e-mail]>");
> > > +MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i3c driver");
> > > +MODULE_LICENSE("GPL v2");  
> 
>

Vitor Soares Oct. 3, 2019, 5:38 p.m. UTC | #6

Hi Jonathan,

From: Jonathan Cameron <[e-mail]>
Date: Thu, Oct 03, 
2019 at 12:49:02

> On Wed, 25 Sep 2019 15:35:10 +0000
> Vitor Soares <[e-mail]> wrote:
> 
> > Hi Jonathan,
> > 
> > From: Jonathan Cameron <[e-mail]>
> > Date: Sun, Jul 21, 2019 at 18:16:56
> > 
> > > On Fri, 19 Jul 2019 15:30:55 +0200
> > > Vitor Soares <[e-mail]> wrote:
> > >   
> > > > 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 let's give i3c support to
> > > > them.
> > > > 
> > > > Signed-off-by: Vitor Soares <[e-mail]>
> > > > Acked-by: Lorenzo Bianconi <[e-mail]>
> > > > Reviewed-by: Boris Brezillon <[e-mail]>  
> > > Great. I'll pick this up once Boris has that immutable branch
> > > available. Give me a poke if I seem to have lost it!
> > > 
> > > Thanks,
> > > 
> > > Jonathan  
> > 
> > I didn't see the i3c support for st_lsm6dsx driver in pull request, could 
> > you please check it?
> Seems to have made it
> 
> https://urldefense.proofpoint.com/v2/url?u=https-3A__git.kernel.org_pub_scm_linux_kernel_git_torvalds_linux.git_tree_drivers_iio_imu_st-5Flsm6dsx_st-5Flsm6dsx-5Fi3c.c-3Fh-3Dv5.4-2Drc1&d=DwICAg&c=DPL6_X_6JkXFx7AXWqB0tg&r=qVuU64u9x77Y0Kd0PhDK_lpxFgg6PK9PateHwjb_DY0&m=RaUb9HXBdF5dxPWn5sdO7gqqaQzqY7UFd8Rcv0ioTx0&s=-Xs5gaN2wau8fXfg5hryTStGMVD8WFA66mX0hCMsmXg&e= 
> 
> I checked back. Was in the first pull request back on the 12th of August.
> 
> Jonathan

I confirm that is there. I'm already using it.
Thanks a lot.

Best regards,
Vitor Soares

Patch

diff --git a/drivers/iio/imu/st_lsm6dsx/Kconfig b/drivers/iio/imu/st_lsm6dsx/Kconfig
index 9e59297..6b5a73c 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..57e6331
--- /dev/null
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c
@@ -0,0 +1,57 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 Synopsys, Inc. and/or its affiliates.
+ *
+ * Author: Vitor Soares <[e-mail]>
+ */
+
+#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"
+
+static const struct i3c_device_id st_lsm6dsx_i3c_ids[] = {
+	I3C_DEVICE(0x0104, 0x006C, (void *)ST_LSM6DSO_ID),
+	I3C_DEVICE(0x0104, 0x006B, (void *)ST_LSM6DSR_ID),
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(i3c, st_lsm6dsx_i3c_ids);
+
+static int st_lsm6dsx_i3c_probe(struct i3c_device *i3cdev)
+{
+	struct regmap_config st_lsm6dsx_i3c_regmap_config = {
+		.reg_bits = 8,
+		.val_bits = 8,
+	};
+	const struct i3c_device_id *id = i3c_device_match_id(i3cdev,
+							    st_lsm6dsx_i3c_ids);
+	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, (uintptr_t)id->data, regmap);
+}
+
+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 <[e-mail]>");
+MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i3c driver");
+MODULE_LICENSE("GPL v2");