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MR-646709E3 X-CRM114-CacheID: sfid-20190712_092815_046538_6F678046 X-CRM114-Status: GOOD ( 18.21 ) X-Mailman-Approved-At: Mon, 15 Jul 2019 00:24:58 -0700 X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux I3C List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Joao.Pinto@synopsys.com" , "rafael@kernel.org" , "linux-iio@vger.kernel.org" , "gregkh@linuxfoundation.org" , "bbrezillon@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-i3c@lists.infradead.org" , "lorenzo@kernel.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org From: Boris Brezillon Date: Fri, Jul 12, 2019 at 17:14:29 > On Fri, 12 Jul 2019 13:53:30 +0200 > Vitor Soares 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 lets give i3c support to > > them. > > > > Signed-off-by: Vitor Soares > > Acked-by: Lorenzo Bianconi > > --- > > 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 | 58 +++++++++++++++++++++++++++++ > > 3 files changed, 66 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..2e89524 > > --- /dev/null > > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c > > @@ -0,0 +1,58 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > +/* > > + * Copyright (c) 2018 Synopsys, Inc. and/or its affiliates. > > + * > > + * Author: Vitor Soares > > + */ > > + > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > + > > +#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), > > I think you need an uintptr_t cast here: > > I3C_DEVICE(0x0104, 0x006C, (void *)(uintptr_t)ST_LSM6DSO_ID), > I3C_DEVICE(0x0104, 0x006B, (void *)(uintptr_t)ST_LSM6DSR_ID), > > otherwise gcc might complain that the integer and pointer do not have > the same size (on 64-bit architectures). I don't understand this part. Can you provide or point some background? > > > + { /* sentinel */ }, > > +}; > > +MODULE_DEVICE_TABLE(i3c, st_lsm6dsx_i3c_ids); > > + > > +static const struct regmap_config st_lsm6dsx_i3c_regmap_config = { > > + .reg_bits = 8, > > + .val_bits = 8, > > +}; > > This can be moved ... > > > + > > +static int st_lsm6dsx_i3c_probe(struct i3c_device *i3cdev) > > +{ > > ... here without the static and const qualifiers: I understand that can be move to here, but I don't understand the advantages. Can you explain? > > struct regmap_config 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, (int)id->data, regmap); > > uintptr_t cast here. > > > +} > > + > > +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 "); > > +MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i3c driver"); > > +MODULE_LICENSE("GPL v2"); Best regards, Vitor Soares _______________________________________________ linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c