From: Vitor Soares <Vitor.Soares@synopsys.com>
To: linux-iio@vger.kernel.org, linux-i3c@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: lorenzo@kernel.org, gregkh@linuxfoundation.org,
rafael@kernel.org, bbrezillon@kernel.org,
Joao.Pinto@synopsys.com, Vitor Soares <Vitor.Soares@synopsys.com>
Subject: [PATCH v6 2/2] iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR
Date: Fri, 19 Jul 2019 15:30:55 +0200 [thread overview]
Message-ID: <77c709aca8607f31f141ee7c4dc28bf89266bd23.1563542515.git.vitor.soares@synopsys.com> (raw)
In-Reply-To: <cover.1563542515.git.vitor.soares@synopsys.com>
In-Reply-To: <cover.1563542515.git.vitor.soares@synopsys.com>
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 <vitor.soares@synopsys.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
---
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 <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"
+
+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 <vitor.soares@synopsys.com>");
+MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i3c driver");
+MODULE_LICENSE("GPL v2");
--
2.7.4
next prev parent reply other threads:[~2019-07-19 13:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-19 13:30 [PATCH v6 0/2] Add ST lsm6dso i3c support Vitor Soares
2019-07-19 13:30 ` [PATCH v6 1/2] i3c: move i3c_device_match_id to device.c and export it Vitor Soares
2019-07-19 13:45 ` Boris Brezillon
2019-07-19 15:42 ` Vitor Soares
2019-07-19 13:30 ` Vitor Soares [this message]
2019-07-21 17:16 ` [PATCH v6 2/2] iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR Jonathan Cameron
2019-07-27 10:42 ` Boris Brezillon
2019-07-27 20:54 ` Jonathan Cameron
2019-09-25 15:35 ` Vitor Soares
2019-10-03 11:49 ` Jonathan Cameron
2019-10-03 17:38 ` Vitor Soares
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